Updated on 2025/12/23

写真a

 
TAKARADA Takeshi
 
Organization
Faculty of Medicine, Dentistry and Pharmaceutical Sciences Professor
Position
Professor
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Degree

  • 博士(薬学) ( 金沢大学 )

Research Interests

  • がん創薬

  • 再生医療

  • ヒト多能性幹細胞

  • iPS

Research Areas

  • Life Science / Pathological biochemistry

  • Life Science / Pharmacology  / stem cells

  • Life Science / Biomedical engineering  / human pluripotent stem cell

Education

  • Kanazawa University   薬学部   薬学科

    1998.4 - 2002.3

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Research History

  • Okayama University   学術研究院医歯薬学域(医)組織機能修復学分野   Professor

    2020.12

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  • Okayama University   Graduate School of Medicine , Dentistry and Pharmaceutical Sciences

    2018.10

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  • Okayama University   Graduate School of Medicine , Dentistry and Pharmaceutical Sciences

    2016.4

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  • Kanazawa University   Institute of Medical, Pharmaceutical and Health Sciences, Faculty of Pharmacy   Assistant Professor

    2008.4 - 2016.3

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  • 金沢大学 自然科学研究科   助教

    2007.4 - 2008.3

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  • セントルイス大学   研究員

    2005.12 - 2006.3

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  • 金沢大学 自然科学研究科   教務職員

    2004.8 - 2007.3

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Professional Memberships

  • 日本軟骨代謝学会

    2022.4

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  • JAPANESE SOCIETY FOR BONE AND MINERAL RESEARCH

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  • THE PHARMACEUTICAL SOCIETY OF JAPAN

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  • THE JAPANESE SOCIETY FOR NEUROCHEMISTRY

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  • THE JAPANESE PHARMACOLOGICAL SOCIETY

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  • International Society for Stem Cell Research (ISSCR)

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  • 日本分子生物学会

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Committee Memberships

  • 日本軟骨代謝学会   評議員  

    2023.4   

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    Committee type:Academic society

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  • 日本薬理学会   代議員  

    2018.10   

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Papers

  • Tumor marker-guided precision BNCT for CA19-9-positive cancers: a new paradigm in molecularly targeted chemoradiation therapy. International journal

    Noriyuki Kanehira, Fuminori Teraishi, Tomoyuki Tajima, Tatsunori Osone, Kazuyoshi Gotoh, Takuya Fujimoto, Yoshinori Sakurai, Natsuko Kondo, Narikazu Nagahisa, Kaoru Kamei, Taiga Fujita, Akira Morihara, Yutaka Takaguchi, Mizuki Kitamatsu, Takeshi Takarada, Kunitoshi Shigeyasu, Minoru Suzuki, Toshiyoshi Fujiwara, Hiroyuki Michiue

    Journal of translational medicine   23 ( 1 )   1387 - 1387   2025.12

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    Language:English   Publishing type:Research paper (scientific journal)  

    BACKGROUND: Boron neutron capture therapy (BNCT) is a molecularly targeted chemoradiation modality that relies on boron delivery agents such as p-borophenylalanine (BPA), which require LAT1 (L-type amino acid transporter 1) for tumor uptake. However, the limited efficacy of BPA in LAT1-low tumors restricts its therapeutic scope. To address this limitation, we developed a tumor marker-guided BNCT strategy targeting cancers overexpressing the clinically validated glycan biomarker CA19-9. METHODS: We conducted transcriptomic analyses using The Cancer Genome Atlas (TCGA) datasets to identify LAT1-low cancers with high CA19-9 expression. These analyses revealed elevated expression of fucosyltransferase 3 (FUT3), which underlies CA19-9 biosynthesis, in pancreatic, biliary, and ovarian malignancies. Based on this, we synthesized a novel boron compound, fucose-BSH, designed to selectively accumulate in CA19-9-positive tumors. We evaluated its physicochemical properties, pharmacokinetics, biodistribution, and antitumor efficacy in cell lines and xenograft models, comparing its performance to that of BPA. RESULTS: Fucose-BSH demonstrated significantly greater boron uptake in CA19-9-positive cell lines (AsPC-1, Panc 04.03, HuCCT-1, HSKTC, OVISE) compared to CA19-9-negative PANC-1. In HuCCT-1 xenografts, boron accumulation reached 36.2 ppm with a tumor/normal tissue ratio of 2.1, outperforming BPA. Upon neutron irradiation, fucose-BSH-mediated BNCT achieved > 80% tumor growth inhibition. Notably, fucose-BSH retained therapeutic efficacy in LAT1-deficient models where BPA was ineffective, confirming LAT1-independent targeting. CONCLUSIONS: This study establishes a novel precision BNCT approach by leveraging CA19-9 as a tumor-selective glycan marker for boron delivery. Fucose-BSH offers a promising platform for expanding BNCT to previously inaccessible LAT1-low malignancies, including pancreatic, biliary, and ovarian cancers. These findings provide a clinically actionable strategy for tumor marker-driven chemoradiation and lay the foundation for translational application in BNCT. This strategy has the potential to support companion diagnostic development and precision stratification in ongoing and future BNCT clinical trials. TRANSLATIONAL RELEVANCE: Malignancies with elevated CA19-9 expression, such as pancreatic, biliary, and ovarian cancers, are associated with poor prognosis and limited response to current therapies. This study presents a tumor marker-guided strategy for boron neutron capture therapy (BNCT) by leveraging CA19-9 glycan biology to enable selective tumor targeting via fucose-BSH, a novel boron compound. Through transcriptomic data mining and preclinical validation, fucose-BSH demonstrated LAT1-independent boron delivery, potent BNCT-mediated cytotoxicity, and tumor-specific accumulation in CA19-9-positive models. These findings support a precision chemoradiation approach that addresses a critical gap in BNCT applicability, offering a clinically actionable pathway for patient stratification and therapeutic development in CA19-9-expressing cancers.

    DOI: 10.1186/s12967-025-07349-7

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  • Ritscher-Schinzel syndrome can be characterized as an endosomal recyclinopathy International journal

    Chris Danson, Izuho Hatada, Takuro Horii, Mitsuharu Hattori, h kroes, Hisashi Oishi, Mohamed Abdel-Hamid, Kohji Kato, Shrestha Shaw, Peter Cullen, Rebeka Butkovic, Kate Heesom, Kevin Wilkinson, Takeshi Takarada, Tomoo Ogi, Shinji Saitoh, Maha Zaki, Ammira Akil, Khalid Fakhro, Emma Jones, Ryosuke Kobayashi, Kirsty McMillan, Ajaz Bhat, Aljazi Maraghi, Masaki Matsushita, Akihiko Saito, Ellen van Binsbergen, Yosuke Nishio, Kazunobu Sawamoto, Yuka Murofushi, Aya Yoshida, Shiomi Otsuji, Yoshihiko Kawano, Waleed Aamer, Jehan AlRayahi, Etienne Janssen, Philip A Lewis, Elbay Aliyev, Kazi Mehrin

    Science Translational Medicine   17 ( 805 )   eadt2426   2025.7

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    Ritscher-Schinzel syndrome (RSS) is a congenital malformation syndrome characterized by cerebellar, cardiac, and craniofacial malformations and phenotypes associated with liver, skeletal, and kidney dysfunction. The genetic cause of RSS remains to be fully defined, and limited information is available regarding the root cause of the multiple tissue phenotypes. Causative mutations in the Commander multiprotein assembly are an emerging feature of this syndrome. Commander organizes the sorting nexin-17 (SNX17)-dependent recycling of hundreds of integral membrane proteins through the endosomal network. Here, we identify previously unrecognized cohorts of patients with RSS that we genetically and clinically analyzed to identify causative genes in the copper metabolic murr1 domain-containing (COMMD) proteins COMMD4, COMMD9, and coiled-coil domain containing 93 (CCDC93) subunits of the Commander complex. Using interactome analysis, we determined that these mutations disrupted Commander assembly and, through cell surface proteomics, that this reduces tissue-specific presentation of cell surface integral membrane proteins essential for kidney, bone, and brain development. We established that these integral proteins contained ΦxNPxY/F or ΦxNxxY/F sorting motifs in their cytoplasmic-facing domains (where Φ is a hydrophobic residue and x is any residue) that are recognized by SNX17 to drive their Commander-dependent endosomal recycling. Last, through generation of mouse models of RSS, we show replication of RSS-associated clinical phenotypes including proteinuria, skeletal malformation, and neurological impairment. Our data establish RSS as a "recyclinopathy" that arises from a dysfunction in the Commander endosomal recycling pathway.

    DOI: 10.1126/scitranslmed.adt2426

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  • Bioengineered chondrocyte-products from human induced pluripotent stem cells are useful for repairing articular cartilage injury in minipig model International journal

    Shota Takihira, Tomoka Takao, Yuki Fujisawa, Daisuke Yamada, Shojiro Hanaki, Tomohiro Inoue, Shigeo Otake, Aki Yoshida, Kazuki Yamada, Shinichi Miyazawa, Eiji Nakata, Toshifumi Ozaki, Takeshi Takarada

    npj Regenerative Medicine   10 ( 1 )   31 - 31   2025.7

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    The capacity of articular cartilage for self-repair is limited. Therefore, wide-ranging cartilage damage rarely resolves spontaneously, leading to the development of osteoarthritis. Previously, we developed human-induced pluripotent stem cell (hiPSC)-derived expandable human limb-bud-like mesenchymal (ExpLBM) cells with stable expansion and high chondrogenic capacity. In this study, various forms of articular cartilage-like tissue were fabricated using ExpLBM technology and evaluated to examine their potential as biomaterials. ExpLBM cells derived from hiPSCs were used to produce particle-like cartilage tissue and plate-like cartilage tissue. The cartilaginous particles and cartilaginous plates were transplanted into a minipig osteochondral defect model, and cartilage engraftment was histologically evaluated. For both transplanted cartilaginous particles and cartilaginous plates, good Safranin O staining and integration with the surrounding tissue were observed. Cartilaginous particles and cartilaginous plates made using hiPSCs-derived ExpLBM cells are effective for the regeneration of cartilage after injury.

    DOI: 10.1038/s41536-025-00420-3

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  • Evaluation and processing of physical properties of anti-calcified glutaraldehyde-treated three-dimensional cultured cartilage tissues International journal

    Yohei Kitaguchi, Tomoyuki Ota, Tomoka Takao, Ryosuke Iwai, Takeshi Moriwaki, Yuki Fujisawa, Daisuke Yamada, Takeshi Takarada

    Biomedical Materials   20 ( 4 )   2025.7

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    Reconstruction using cartilage tissue is necessary to address deformities of the nose, ears, and maxillofacial region in several cases. However, autologous cartilage tissue transplantation is limited in the amount that can be harvested owing to invasiveness to the human body. Moreover, artificial materials such as implants cannot be used in many situations, given their potential to induce reactions to foreign bodies. Therefore, there is a growing demand for biomaterials that are less likely to cause foreign body reactions. Given that a tissue with a functionally superior three-dimensional (3D) structure can replace autologous tissue and artificial materials, we have developed a 3D cultured cartilage tissue without scaffolding material and are working toward its practical application. To achieve an off-the-shelf product that allows prolonged storage, the tissue was fixed with glutaraldehyde to maintain high strength for subsequent processing and management. Although tissue fixation with glutaraldehyde may cause calcification due to the deposition of calcium phosphate, calcification can be prevented by washing with high-concentration ethanol. We generated 3D cultured cartilage tissues using induced pluripotent stem cell-derived limb bud mesenchymal cells and an original cell self-culture aggregation method. The generated tissues were subjected to an anti-calcification treatment with glutaraldehyde and 80% ethanol. The treated tissue had improved stability and strength with minimal calcification. The tissue retained its physical properties that were effectively processable and could be processed into an ear-like shape.

    DOI: 10.1088/1748-605X/addbb5

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  • Scaffold-free cryopreservable cartilage grafts obtained from hiPSC-derived chondroprogenitor cells for airway reconstruction with growth adaptability

    Shojiro Hanaki, Tomoka Takao, Yuki Fujisawa, Tomoyuki Ota, Tatsunori Osone, Shigeo Otake, Ryosuke Iwai, Koichi Deguchi, Kazuhiro Yamamoto, Hiroomi Okuyama, Takeshi Takarada

    2025.6

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    <jats:title>Abstract</jats:title><jats:p>Pediatric tracheal reconstruction remains a major clinical challenge because of limited graft availability and the need for growth-adaptive materials. Current approaches, such as costal cartilage grafting and use of scaffold-based constructs, often suffer from complications including graft resorption, donor site morbidity, and poor integration. Here, we present scaffold-free cartilage grafts (chondro-plates) derived from expandable limb-bud mesenchymal cells generated from human leukocyte antigen-homozygous human induced pluripotent stem cells. These grafts are cryopreservable and maintain their hyaline cartilage phenotype after a brief pre-culture. In both rat and rabbit tracheal defect models, chondro-plates supported robust cartilage regeneration, epithelial reconstitution, and neovascularization. Importantly, in a pediatric-like growing rat model, chondro-plates preserved luminal patency and structural integrity, outperforming autologous costal cartilage. This study demonstrates a clinically viable, off-the-shelf strategy for tracheal reconstruction using scalable, immunocompatible, and growth-adaptive cartilage grafts.</jats:p>

    DOI: 10.1101/2025.06.05.654989

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  • SGCRNA: Spectral Clustering-Guided Co-Expression Network Analysis Without Scale-Free Constraints for Multi-Omic Data

    Tatsunori Osone, Tomoka Takao, Shigeo Otake, Takeshi Takarada

    bioRxiv   2025.4

  • RUNX2 promotes fibrosis via an alveolar-to-pathological fibroblast transition International journal

    Yinshan Fang, Sanny S. W. Chung, Le Xu, Chenyi Xue, Xue Liu, Dianhua Jiang, Rongbo Li, Yohei Korogi, Ke Yuan, Anjali Saqi, Hanina Hibshoosh, Yuefeng Huang, Chyuan-Sheng Lin, Takeshi Takarada, Tatsuya Tsukui, Dean Sheppard, Xin Sun, Jianwen Que

    Nature   640 ( 8057 )   221 - 230   2025.4

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    A hallmark of pulmonary fibrosis is the aberrant activation of lung fibroblasts into pathological fibroblasts that produce excessive extracellular matrix1-3. Thus, the identification of key regulators that promote the generation of pathological fibroblasts can inform the development of effective countermeasures against disease progression. Here we use two mouse models of pulmonary fibrosis to show that LEPR+ fibroblasts that arise during alveologenesis include SCUBE2+ alveolar fibroblasts as a major constituent. These alveolar fibroblasts in turn contribute substantially to CTHRC1+POSTN+ pathological fibroblasts. Genetic ablation of POSTN+ pathological fibroblasts attenuates fibrosis. Comprehensive analyses of scRNA-seq and scATAC-seq data reveal that RUNX2 is a key regulator of the expression of fibrotic genes. Consistently, conditional deletion of Runx2 with LeprcreERT2 or Scube2creERT2 reduces the generation of pathological fibroblasts, extracellular matrix deposition and pulmonary fibrosis. Therefore, LEPR+ cells that include SCUBE2+ alveolar fibroblasts are a key source of pathological fibroblasts, and targeting Runx2 provides a potential treatment option for pulmonary fibrosis.

    DOI: 10.1038/s41586-024-08542-2

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  • Modeling human limb skeletal development using human pluripotent stem cell-derived skeletal assembloids

    Tomoka Takao, Tatsunori Osone, Kohei Sato, Daisuke Yamada, Yuki Fujisawa, Masaya Hagiwara, Eiji Nakata, Toshifumi Ozaki, Junya Toguchida, Takeshi Takarada

    bioRxiv   2025.1

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    Authorship:Corresponding author  

    DOI: 10.1101/2025.01.09.631479

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  • PRRX1 upregulates PD-L1 in human mesenchymal stem cells International journal

    Taro Osawa, Daisuke Yamada, Tomoko Takao, Lu Ming, Takeshi Takarada

    In Vitro Cellular & Developmental Biology - Animal   60 ( 10 )   1132 - 1137   2024.12

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    Mesenchymal stem cells (MSCs) have been demonstrated to be efficacious in clinical applications for the amelioration of immune disorders, including graft-versus-host disease (GvHD) and Crohn's disease. The immunosuppressive role of Programmed death-ligand 1 (PD-L1) in MSCs is pivotal, yet the regulatory mechanisms governing its expression remain to be fully elucidated. In this study, we explored the influence of paired-related homeobox (PRRX1), a determinant of multipotency and self-renewal in MSCs, on the expression of various surface antigens, notably PD-L1. Multiple isoforms of PRRX1 were found to augment the mRNA levels of MSC markers, such as CD26 and CD317, with all isoforms elevating PD-L1 expression at both mRNA and protein levels. This study reveals that PRRX1 may act as a potential immunomodulatory factor in MSCs by regulating the PD-L1 pathway.

    DOI: 10.1007/s11626-024-00911-5

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  • Efficient Production of Chondrocyte Particles from Human iPSC-Derived Chondroprogenitors Using a Plate-Based Cell Self-Aggregation Technique. International journal

    Shojiro Hanaki, Daisuke Yamada, Tomoka Takao, Ryosuke Iwai, Takeshi Takarada

    International journal of molecular sciences   25 ( 22 )   2024.11

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    The limited capacity of articular cartilage for self-repair is a critical challenge in orthopedic medicine. Here, we aimed to develop a simplified method of generating chondrocyte particles from human-induced pluripotent stem cell-derived expandable limb-bud mesenchymal cells (ExpLBM) using a cell self-aggregation technique (CAT). ExpLBM cells were induced to form chondrocyte particles through a stepwise differentiation protocol performed on a CAT plate (prevelex-CAT®), which enables efficient and consistent production of an arbitrary number of uniformly sized particles. Histological and immunohistochemical analyses confirmed that the generated chondrocyte particles expressed key cartilage markers, such as type II collagen and aggrecan, but not hypertrophic markers, such as type X collagen. Additionally, when these particles were transplanted into osteochondral defects in rats with X-linked severe combined immunodeficiency, they demonstrated successful engraftment and extracellular matrix production, as evidenced by Safranin O and Toluidine Blue staining. These data suggest that the plate-based CAT system offers a robust and scalable approach to produce a large number of chondrocyte particles in a simplified and efficient manner, with potential application to cartilage regeneration. Future studies will focus on refining the system and exploring its clinical applications to the treatment of cartilage defects.

    DOI: 10.3390/ijms252212063

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  • 悪性末梢神経鞘腫瘍における悪性化を促進する新規メカニズム 転写因子PRRX1とTOP2Aのタンパク質間相互作用の発見

    たき平 将太, 山田 大祐, 大曽根 達則, 高尾 知佳, 板野 拓人, 藤原 智洋, 中田 英二, 国定 俊之, 尾崎 敏文, 宝田 剛志

    日本整形外科学会雑誌   98 ( 8 )   S1957 - S1957   2024.9

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    Language:Japanese   Publisher:(公社)日本整形外科学会  

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  • 悪性末梢神経鞘腫瘍におけるPRRX1とTOP2Aの相互作用による悪性化メカニズムの新規解明

    たき平 将太, 中田 英二, 板野 拓人, 藤原 智洋, 国定 俊之, 大曽根 達則, 山田 大祐, 高尾 知佳, 宝田 剛志, 尾崎 敏文

    日本整形外科学会雑誌   98 ( 6 )   S1529 - S1529   2024.6

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  • ヒトiPS細胞由来軟骨組織を利用した小児気管疾患に対する再生治療法の開発

    花木 祥二朗, 高尾 知佳, 藤澤 佑樹, 山田 大祐, 岩井 良輔, 宝田 剛志

    日本小児外科学会雑誌   60 ( 3 )   509 - 509   2024.4

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  • ヒトiPS細胞由来軟骨組織を利用した小児気管疾患に対する再生治療法の開発

    花木 祥二朗, 高尾 知佳, 藤澤 佑樹, 山田 大祐, 岩井 良輔, 宝田 剛志

    日本小児外科学会雑誌   60 ( 3 )   509 - 509   2024.4

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  • PRRX1-TOP2A interaction is a malignancy-promoting factor in human malignant peripheral nerve sheath tumours. International journal

    Shota Takihira, Daisuke Yamada, Tatsunori Osone, Tomoka Takao, Masakiyo Sakaguchi, Michiyuki Hakozaki, Takuto Itano, Eiji Nakata, Tomohiro Fujiwara, Toshiyuki Kunisada, Toshifumi Ozaki, Takeshi Takarada

    British journal of cancer   130 ( 9 )   1493 - 1504   2024.3

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    BACKGROUND: Paired related-homeobox 1 (PRRX1) is a transcription factor in the regulation of developmental morphogenetic processes. There is growing evidence that PRRX1 is highly expressed in certain cancers and is critically involved in human survival prognosis. However, the molecular mechanism of PRRX1 in cancer malignancy remains to be elucidated. METHODS: PRRX1 expression in human Malignant peripheral nerve sheath tumours (MPNSTs) samples was detected immunohistochemically to evaluate survival prognosis. MPNST models with PRRX1 gene knockdown or overexpression were constructed in vitro and the phenotype of MPNST cells was evaluated. Bioinformatics analysis combined with co-immunoprecipitation, mass spectrometry, RNA-seq and structural prediction were used to identify proteins interacting with PRRX1. RESULTS: High expression of PRRX1 was associated with a poor prognosis for MPNST. PRRX1 knockdown suppressed the tumorigenic potential. PRRX1 overexpressed in MPNSTs directly interacts with topoisomerase 2 A (TOP2A) to cooperatively promote epithelial-mesenchymal transition and increase expression of tumour malignancy-related gene sets including mTORC1, KRAS and SRC signalling pathways. Etoposide, a TOP2A inhibitor used in the treatment of MPNST, may exhibit one of its anticancer effects by inhibiting the PRRX1-TOP2A interaction. CONCLUSION: Targeting the PRRX1-TOP2A interaction in malignant tumours with high PRRX1 expression might provide a novel tumour-selective therapeutic strategy.

    DOI: 10.1038/s41416-024-02632-8

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  • 悪性末梢神経鞘腫瘍において転写因子PRRX1はTOP2Aと相互作用し悪性化を促進させる

    たき平 将太, 中田 英二, 板野 拓人, 藤原 智洋, 国定 俊之, 大曽根 達則, 山田 大祐, 高尾 知佳, 宝田 剛志, 尾崎 敏文

    日本整形外科学会雑誌   98 ( 2 )   S76 - S76   2024.3

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  • 悪性末梢神経鞘腫瘍において転写因子PRRX1はTOP2Aと相互作用し悪性化を促進させる

    たき平 将太, 中田 英二, 板野 拓人, 藤原 智洋, 国定 俊之, 大曽根 達則, 山田 大祐, 高尾 知佳, 宝田 剛志, 尾崎 敏文

    日本整形外科学会雑誌   98 ( 2 )   S76 - S76   2024.3

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  • 神経線維腫症1型患者由来ヒトiPS細胞株の樹立

    大澤 太郎, 中田 英二, 岡本 真幸, 山田 大祐, 二川 摩周, 高尾 知佳, 平沢 晃, 尾崎 敏文, 宝田 剛志

    日本レックリングハウゼン病学会学術大会プログラム・抄録集   15回   24 - 24   2024.2

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  • Antitumor activity of α-pinene in T-cell tumors. International journal

    Masaya Abe, Noboru Asada, Maiko Kimura, Chie Fukui, Daisuke Yamada, Ziyi Wang, Masayuki Miyake, Takeshi Takarada, Mitsuaki Ono, Michinori Aoe, Wataru Kitamura, Masayuki Matsuda, Takashi Moriyama, Akifumi Matsumura, Yoshinobu Maeda

    Cancer science   115 ( 4 )   1317 - 1332   2024.1

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    T-cell acute leukemia and lymphoma have a poor prognosis. Although new therapeutic agents have been developed, their therapeutic effects are suboptimal. α-Pinene, a monoterpene compound, has an antitumor effect on solid tumors; however, few comprehensive investigations have been conducted on its impact on hematologic malignancies. This report provides a comprehensive analysis of the potential benefits of using α-pinene as an antitumor agent for the treatment of T-cell tumors. We found that α-pinene inhibited the proliferation of hematologic malignancies, especially in T-cell tumor cell lines EL-4 and Molt-4, induced mitochondrial dysfunction and reactive oxygen species accumulation, and inhibited NF-κB p65 translocation into the nucleus, leading to robust apoptosis in EL-4 cells. Collectively, these findings suggest that α-pinene has potential as a therapeutic agent for T-cell malignancies, and further investigation is warranted.

    DOI: 10.1111/cas.16086

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  • ヒトiPS細胞由来肢芽間葉系細胞から作製した軟骨組織体を用いた骨再生

    中田 英二, 佐藤 浩平, 高尾 知佳, 藤澤 祐樹, 山田 大祐, 上原 健敬, 藤原 智洋, 尾崎 敏文, 宝田 剛志

    移植   58 ( 3 )   293 - 293   2023.12

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    Language:Japanese   Publisher:(一社)日本移植学会  

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  • Alpha-Pinene As a Novel Therapeutic Agent for T-Cell Tumors

    Masaya Abe, Noboru Asada, Maiko Kimura, Chie Fukui, Daisuke Yamada, Ziyi Wang, Masayuki Miyake, Takeshi Takarada, Mitsuaki Ono, Michinori Aoe, Wataru Kitamura, Masayuki Matsuda, Takashi Moriyama, Akifumi Matsumura, Yoshinobu Maeda

    Blood   142 ( Supplement 1 )   1441 - 1441   2023.11

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    Publishing type:Research paper (scientific journal)   Publisher:American Society of Hematology  

    T-cell acute leukemia and lymphoma have poor prognoses, necessitating the development of novel therapeutic agents. In this study, we investigated the antitumor activity of α-pinene, a monoterpene compound, against T-cell tumors. We evaluated the effects of α-pinene on cell growth inhibition in vitro using the murine T-cell tumor cell line EL-4 and the human-derived T-cell tumor cell line Molt-4. In addition, we assessed the effects of limonene, another monoterpene with reported tumor-suppressive effects, as a comparative agent.

    Both α-pinene and limonene demonstrated concentration- and time-dependent inhibition of cell growth in both the EL-4 and Molt-4 cell lines (Figure 1). Moreover, α-pinene exhibited greater potency than limonene in inhibiting the growth of various hematologic malignancies. Importantly, α-pinene and limonene had minimal effects on the growth of normal murine spleen T cells. Further investigation of the mechanisms of action of α-pinene revealed its ability to induce apoptosis and cell cycle arrest in EL-4 and Molt-4 cells. Transcriptomic profiling of α-pinene-treated EL-4 cells using RNA-seq identified differentially expressed genes associated with cellular damage and mitochondrial dysfunction. Increased intracellular ROS levels and mitochondrial impairment were observed in the T-cell tumors treated with α-pinene. The activation of intrinsic apoptotic pathways involving EGR1, p53, BCL-2, and BAX was found to contribute to α-pinene-induced apoptosis in T-cell tumors. Moreover, α-pinene inhibited the NF-κB signaling pathway, resulting in the reduced nuclear translocation of NF-κB p65 and decreased total intracellular NF-κB p65 levels in EL-4 cells. Additionally, we discovered that α-pinene induced ferroptosis, a newly identified programmed cell death process, in EL-4 cells through lipid peroxidation and iron accumulation. Activation of the system x c−/GSH/GPX4 axis and upregulation of iron transporters, such as Slc39a8 and TfR1, were observed in α-pinene-induced ferroptosis. Treatment with the ferroptosis inhibitor Fer-1 partially reversed the tumor-inhibiting effect of α-pinene in EL-4 cells. Finally, we administrated α-pinene to mice subcutaneously injected with luciferase-expressing EL-4 to evaluate the efficacy of α-pinene in vivo. The tumor growth was significantly inhibited by α-pinene treatment (vehicle: 1055 ± 101 mm 3; α-pinene: 701 ± 82 mm 3, p &amp;lt; 0.01, Figure 2) without adverse effects on body weight or behavior. Immunohistochemistry analyses revealed a significant increase of CD8 + T-cells (vehicle: 8.1 ± 2.7 cells / field of view; α-pinene: 43.1 ± 12.2 cells / field of view , p &amp;lt; 0.05) and NK1.1 + cells (vehicle: 5.1 ± 1.0 cells / field of view ; α-pinene: 41.1 ± 9.8 cells / field of view , p &amp;lt; 0.01) in the tumors, suggesting that α-pinene may have an indirect antitumor effect by recruiting immune cells into tumors.

    Overall, our findings demonstrate the antitumor activity of α-pinene against T-cell tumors through the induction of apoptosis, cell cycle arrest, and ferroptosis. α-Pinene shows promise as a potential therapeutic agent for T-cell tumors and warrants further investigation for its clinical application.

    DOI: 10.1182/blood-2023-181447

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  • Development of cartilage tissue using a stirred bioreactor and human iPSC-derived limb bud mesenchymal cells. International journal

    Yuki Fujisawa, Tomoka Takao, Daisuke Yamada, Takeshi Takarada

    Biochemical and biophysical research communications   687   149146 - 149146   2023.10

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    Production of cartilaginous particles for regenerative medicine requires a large supply of chondrocytes and development of suitable production techniques. Previously, we successfully produced human induced pluripotent stem cell (hiPSC)-derived limb bud mesenchymal cells (ExpLBM cells) with a high chondrogenic differentiation potential that stably proliferate. It may be possible to use these cells in combination with a stirred bioreactor to develop a tissue-engineered cell culture technology with potential for scale-up to facilitate production of large amounts of cartilaginous particles. ExpLBM cells derived from 414C2 and Ff-I 14s04 (human leukocyte antigen homozygous) hiPSCs were seeded into a stirred bioreactor containing cartilage induction medium. To characterize the cartilaginous particles produced, we performed real-time quantitative reverse transcription-polymerase chain reaction and histological analyses. Additionally, we transplanted the cartilage tissue into osteochondral defects of immunocompromised rats to assess its functionality, and evaluated engraftment of the grafted tissue. We successfully produced large amounts of cartilaginous particles via cartilage induction culture in a stirred bioreactor. This tissue exhibited significantly increased expression levels of type II collagen (COL2), aggrecan (ACAN), and SRY-box transcription factor 9 (SOX9), as well as positive Safranin O and Toluidine blue staining, indicating that it possesses characteristics of hyaline cartilage. Furthermore, engrafted tissues in osteochondral knee defects of immunodeficient rats were positively stained for human vimentin, COL2, and ACAN as well as with Safranin O. In this study, we successfully generated large amounts of hiPSC-derived cartilaginous particles using a combination of tissue engineering techniques. This method is promising as a cartilage regeneration technology with potential for scale-up.

    DOI: 10.1016/j.bbrc.2023.149146

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  • Fabrication of shape-designable cartilage from human induced pluripotent stem cell-derived chondroprogenitors using a cell self-aggregation technique. International journal

    Tomoyuki Ota, Tomoka Takao, Ryosuke Iwai, Takeshi Moriwaki, Yohei Kitaguchi, Yuki Fujisawa, Daisuke Yamada, Yoshihiro Kimata, Takeshi Takarada

    Biomedical materials (Bristol, England)   2023.10

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    With the advancement of tissue engineering technologies, implantable materials have been developed for use in facial plastic surgery, including auriculoplasty and rhinoplasty. Tissue-engineered cartilage comprising only cells and cell-produced extracellular matrix is considered valuable as there is no need to consider problems associated with the absorption of scaffold materials and the generation of immune responses. However, it is exceedingly difficult to produce large-sized complex shapes of cartilage without the use of scaffolds. In this study, we describe the production of shape-designable cartilage using a novel cell self-aggregation technique (CAT) and chondroprogenitor cells derived from human induced pluripotent stem cells as the source. The method described does not require special equipment such as bio-3D printers, and the produced tissue can be induced into well-matured cartilage with abundant cartilage matrix in vitro. Using CAT, we were able to generate cartilage in the form of rings or tubes with adjustable inner diameter and curvature, over a range of several centimeters, without the use of scaffolds. The in vitro fabrication of shape-designable cartilage using CAT will undoubtedly contribute to developments in the field of facial plastic surgery.&#xD.

    DOI: 10.1088/1748-605X/ad02d1

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  • ヒトiPS細胞由来肢芽間葉系細胞の発生機序の検討

    高尾 知佳, 大曽根 達則, 山田 大祐, 中田 英二, 尾崎 敏文, 宝田 剛志

    日本整形外科学会雑誌   97 ( 8 )   S1599 - S1599   2023.8

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  • ヒトiPS細胞由来肢芽間葉系細胞を用いた骨再建法の開発

    佐藤 浩平, 高尾 知佳, 中田 英二, 藤澤 佑樹, 山田 大祐, 上原 健敬, 藤原 智洋, 依光 正則, 国定 俊之, 尾崎 敏文, 宝田 剛志

    日本整形外科学会雑誌   97 ( 8 )   S1868 - S1868   2023.8

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  • 悪性末梢神経鞘腫瘍におけるPRRX1の悪性化因子としての役割

    たき平 将太, 中田 英二, 板野 拓人, 片山 晴喜, 藤原 智洋, 国定 俊之, 山田 大祐, 高尾 知佳, 宝田 剛志, 尾崎 敏文

    日本整形外科学会雑誌   97 ( 8 )   S1890 - S1890   2023.8

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  • ヒトiPS細胞由来肢芽間葉系細胞の発生機序の検討

    高尾 知佳, 大曽根 達則, 山田 大祐, 中田 英二, 尾崎 敏文, 宝田 剛志

    日本整形外科学会雑誌   97 ( 8 )   S1599 - S1599   2023.8

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  • ヒトiPS細胞由来肢芽間葉系細胞を用いた骨再建法の開発

    佐藤 浩平, 高尾 知佳, 中田 英二, 藤澤 佑樹, 山田 大祐, 上原 健敬, 藤原 智洋, 依光 正則, 国定 俊之, 尾崎 敏文, 宝田 剛志

    日本整形外科学会雑誌   97 ( 8 )   S1868 - S1868   2023.8

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  • 悪性末梢神経鞘腫瘍における治療標的PRRX1の同定と新規創薬開発の可能性

    たき平 将太, 山田 大祐, 岡本 真幸, 高尾 知佳, 中田 英二, 板野 拓人, 藤原 智洋, 国定 俊之, 尾崎 敏文, 宝田 剛志

    日本整形外科学会雑誌   97 ( 6 )   S1428 - S1428   2023.6

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  • ヒト多能性幹細胞から誘導した肢芽間葉系細胞と、その拡大培養法の開発

    中田 英二, 山田 大祐, 高尾 知佳, たき平 将太, 藤原 智洋, 尾崎 敏文, 宝田 剛志

    移植   57 ( 4 )   363 - 363   2023.4

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  • ヒトiPS細胞から誘導した肢芽間葉系細胞による軟骨シートの作製

    藤澤 佑樹, 高尾 知佳, 佐藤 正人, 豊田 恵利子, 山田 大祐, 中田 英二, 尾崎 敏文, 宝田 剛志

    移植   57 ( 4 )   362 - 362   2023.4

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  • 悪性末梢神経鞘腫瘍におけるPRRX1の治療標的分子としての可能性

    たき平 将太, 中田 英二, 大曽根 達則, 山田 大祐, 高尾 知佳, 佐藤 浩平, 畑 利彰, 藤原 智洋, 国定 俊之, 宝田 剛志, 尾崎 敏文

    日本整形外科学会雑誌   97 ( 3 )   S1040 - S1040   2023.3

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  • A novel chondrocyte sheet fabrication using human-induced pluripotent stem cell-derived expandable limb-bud mesenchymal cells. International journal

    Tomoka Takao, Masato Sato, Yuki Fujisawa, Eriko Toyoda, Daisuke Yamada, Yukio Hitsumoto, Eiji Nakata, Toshifumi Ozaki, Takeshi Takarada

    Stem cell research & therapy   14 ( 1 )   34 - 34   2023.2

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    BACKGROUND: Cell sheet fabrication for articular cartilage regenerative medicine necessitates a large number of chondrocytes of consistent quality as a cell source. Previously, we have developed human-induced pluripotent stem cell (iPSC)-derived expandable PRRX1+ limb-bud mesenchymal cells (ExpLBM) with stable expansion and high chondrogenic capacity, while in this study; our ExpLBM technology was combined with cell sheet engineering to assess its potential as a stable cell source for articular cartilage regeneration. METHODS: ExpLBM cells derived from human-induced pluripotent stem cells (hiPSCs), including 414C2 and Ff-KVs09 (HLA homozygous), were seeded onto a culture plate and two-dimensional chondrogenic induction (2-DCI) was initiated. After 2-DCI, ExpLBM-derived chondrocytes were stripped and transferred to temperature-responsive culture inserts and the chondrocyte sheets were histologically examined or transplanted into osteochondral knee defects of immunodeficient rats. RESULTS: Immunohistochemistry revealed that ExpLBM-derived cell sheets were positive for Safranin O, COL2, and ACAN but that they were negative for COL1 and RUNX2. Furthermore, the engrafted tissues in osteochondral knee defects in immunodeficient rats were stained with SafO, human VIMENTIN, ACAN, and COL2. CONCLUSIONS: The present study is the first to report the chondrocyte sheet fabrication with hiPSC-derived cell source. hiPSC-derived ExpLBM would be a promising cell source for cell sheet technology in articular cartilage regenerative medicine.

    DOI: 10.1186/s13287-023-03252-4

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  • 悪性末梢神経鞘腫瘍におけるPRRX1の悪性化因子としての役割

    たき平 将太, 中田 英二, 山田 大祐, 片山 晴喜, 畑 利彰, 藤原 智洋, 高尾 知佳, 国定 俊之, 宝田 剛志, 尾崎 敏文

    日本レックリングハウゼン病学会学術大会プログラム・抄録集   14回   16 - 16   2023.2

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  • A protocol to induce expandable limb-bud mesenchymal cells from human pluripotent stem cells. International journal

    Tomoka Takao, Daisuke Yamada, Takeshi Takarada

    STAR protocols   3 ( 4 )   101786 - 101786   2022.12

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    Here, we present a protocol for the selective differentiation of human pluripotent stem cells mimicking human developmental processes into expandable PRRX1+ limb-bud mesenchymal (ExpLBM) cells. This approach enables expansion through serial passage while maintaining capacity for chondrogenic differentiation. For complete details on the use and execution of this protocol, please refer to Yamada et al. (2021, 2022).

    DOI: 10.1016/j.xpro.2022.101786

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  • Establishment of a human pluripotent stem cell-derived MKX-td Tomato reporter system. International journal

    Yuki Fujisawa, Lu Ming, Daisuke Yamada, Tomoka Takao, Takeshi Takarada

    Stem cell research & therapy   13 ( 1 )   515 - 515   2022.11

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    Tendon regeneration is difficult because detailed knowledge about tendon progenitor cells (TPCs), which produce tenocytes to repair tendon tissue, has not been revealed. Mohawk homeobox (MKX) is a marker of TPCs or tenocytes, but a human pluripotent stem cell (hPSC)-based reporter system that visualizes MKX+ cells has not been developed. Here, we established an hPSC-derived MKX-tdTomato reporter cell line and tested the induction ratio of MKX-tdTomato+ cells using our stepwise/xeno-free differentiation protocol. MKX-tdTomato+ cells were generated with high efficiency and expressed tendon-specific markers, including MKX, SCX, TNMD, and COL1A1. Our MKX-tdTomato hPSC line would be a useful tool for studying the development or regeneration of tendon tissue.

    DOI: 10.1186/s13287-022-03203-5

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  • Fabrication of scaffold-free mesenchyme tissue bands by cell self-aggregation technique for potential use in tissue regeneration. International journal

    Tomoyuki Ota, Ryosuke Iwai, Yohei Kitaguchi, Takeshi Takarada, Yoshihiro Kimata

    Biomedical materials (Bristol, England)   17 ( 6 )   2022.11

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    Three-dimensional cell constructs comprising only tissue-specific cells and extracellular matrix secreted by them would be ideal transplants, but their fabrication in a cell aggregation manner without cell scaffolds relies on random cell self-aggregation, making the control of their size and shape difficult. In this study, we propose a method to fabricate band-shaped tissues by inducing the self-aggregation of cell sheets using the developed cell self-aggregation technique (CAT). Acting as cell aggregation stoppers, silicone semicircular pillars were attached to two positions equidistant from both short ends of the rounded rectangular culture groove and coated with a specifically charged biomimetic polymer as a CAT-inducing surface. Mesenchymal stem cells, chondrocytes, and skeletal myoblast cells seeded on the surface of the culture grooves formed band-shaped aggregates between the two aggregation stoppers following spontaneous detachment with aggregation of the cell sheet from the outer edge of the grooves during day one of culture. The aggregated chondrocyte band matured into a cartilage-like plate with an abundant cartilage matrix while retaining its band shape after two weeks of chondrogenic cultivation. Additionally, the aggregates of mesenchymal stem cells and myoblast cell bands could patch the induced collagen membrane derived from rat subcutaneous tissue like a bandage immediately after their formation and successfully mature into fat and muscle tissues, respectively. These results indicate that, depending on the cell type, scaffold-free band-shaped cell aggregates produced by CAT have the potential to achieve tissue regeneration that follows the shape of the defect viain vitromaturation culture orin vivoorganization.

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  • ヒトiPS細胞来肢芽間葉系細胞を用いた硝子軟骨シートの作製

    高尾 知佳, 佐藤 正人, 豊田 恵利子, 山田 大祐, 中田 英二, 尾崎 敏文, 宝田 剛志

    日本整形外科学会雑誌   96 ( 8 )   S1557 - S1557   2022.9

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  • 悪性末梢神経鞘腫瘍におけるPRRX1の悪性化因子としての役割

    たき平 将太, 山田 大祐, 高尾 知佳, 中田 英二, 近藤 宏也, 佐藤 浩平, 畑 利彰, 藤原 智洋, 国定 俊之, 尾崎 敏文, 宝田 剛志

    日本整形外科学会雑誌   96 ( 8 )   S1768 - S1768   2022.9

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  • ヒトiPS細胞来肢芽間葉系細胞を用いた硝子軟骨シートの作製

    高尾 知佳, 佐藤 正人, 豊田 恵利子, 山田 大祐, 中田 英二, 尾崎 敏文, 宝田 剛志

    日本整形外科学会雑誌   96 ( 8 )   S1557 - S1557   2022.9

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  • 悪性末梢神経鞘腫瘍におけるPRRX1の悪性化因子としての役割

    たき平 将太, 山田 大祐, 高尾 知佳, 中田 英二, 近藤 宏也, 佐藤 浩平, 畑 利彰, 藤原 智洋, 国定 俊之, 尾崎 敏文, 宝田 剛志

    日本整形外科学会雑誌   96 ( 8 )   S1768 - S1768   2022.9

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  • Vestigial-Like 3 Plays an Important Role in Osteoblast Differentiation by Regulating the Expression of Osteogenic Transcription Factors and BMP Signaling. International journal

    Haoze Yuan, Mika Ikegame, Yoko Fukuhara, Fumiko Takemoto, Yaqiong Yu, Jumpei Teramachi, Yao Weng, Jiajie Guo, Daisuke Yamada, Takeshi Takarada, Ying Li, Hirohiko Okamura, Bin Zhang

    Calcified tissue international   111 ( 3 )   331 - 344   2022.6

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    Our previous gene profiling analysis showed that the transcription cofactor vestigial-like 3 (VGLL3) gene expression was upregulated by mechanical tension in the mouse cranial suture, coinciding with accelerated osteoblast differentiation. Therefore, we hypothesized that VGLL3 plays a significant role in osteogenic differentiation. To clarify the function of VGLL3 in osteoblasts, we examined its expression characteristics in mouse bone tissue and the osteoblastic cell line MC3T3-E1. We further examined the effects of Vgll3 knockdown on osteoblast differentiation and bone morphogenetic protein (BMP) signaling. In the mouse cranial suture, where membranous ossification occurs, VGLL3 was immunohistochemically detected mostly in the nucleus of osteoblasts, preosteoblasts, and fibroblastic cells. VGLL3 expression in MC3T3-E1 cells was transient and peaked at a relatively early stage of differentiation. RNA sequencing revealed that downregulated genes in Vgll3-knockdown cells were enriched in gene ontology terms associated with osteoblast differentiation. Interestingly, most of the upregulated genes were related to cell division. Targeted Vgll3 knockdown markedly suppressed the expression of major osteogenic transcription factors (Runx2, Sp7/osterix, and Dlx5) and osteoblast differentiation. It also attenuated BMP signaling; moreover, exogenous BMP2 partially restore osteogenic transcription factors' expression in Vgll3-knockdown cells. Furthermore, overexpression of Vgll3 increased the expression of osteogenic transcription factors. These results suggest that VGLL3 plays a critical role in promoting osteoblast differentiation and that part of the process is mediated by BMP signaling. Further elucidation of VGLL3 function will increase our understanding of osteogenesis and skeletal disease etiology.

    DOI: 10.1007/s00223-022-00997-7

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  • Identification of Surface Antigens That Define Human Pluripotent Stem Cell-Derived PRRX1+Limb-Bud-like Mesenchymal Cells. International journal

    Daisuke Yamada, Tomoka Takao, Masahiro Nakamura, Toki Kitano, Eiji Nakata, Takeshi Takarada

    International journal of molecular sciences   23 ( 5 )   2022.2

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    Stem cell-based therapies and experimental methods rely on efficient induction of human pluripotent stem cells (hPSCs). During limb development, the lateral plate mesoderm (LPM) produces limb-bud mesenchymal (LBM) cells that differentiate into osteochondroprogenitor cells and form cartilage tissues in the appendicular skeleton. Previously, we generated PRRX1-tdTomato reporter hPSCs to establish the protocol for inducing the hPSC-derived PRRX1+ LBM-like cells. However, surface antigens that assess the induction efficiency of hPSC-derived PRRX1+ LBM-like cells from LPM have not been identified. Here, we used PRRX1-tdTomato reporter hPSCs and found that high pluripotent cell density suppressed the expression of PRRX1 mRNA and tdTomato after LBM-like induction. RNA sequencing and flow cytometry suggested that PRRX1-tdTomato+ LBM-like cells are defined as CD44high CD140Bhigh CD49f-. Importantly, other hPSC lines, including four human induced pluripotent stem cell lines (414C2, 1383D2, HPS1042, HPS1043) and two human embryonic stem cell lines (SEES4, SEES7), showed the same results. Thus, an appropriate cell density of hPSCs before differentiation is a prerequisite for inducing the CD44high CD140Bhigh CD49f- PRRX1+ LBM-like cells.

    DOI: 10.3390/ijms23052661

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  • Mouse Model for Optogenetic Genome Engineering.

    Tomoka Takao, Daisuke Yamada, Takeshi Takarada

    Acta medica Okayama   76 ( 1 )   1 - 5   2022.2

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    Optogenetics, a technology to manipulate biological phenomena thorough light, has attracted much attention in neuroscience. Recently, the Magnet System, a photo-inducible protein dimerization system which can control the intracellular behavior of various biomolecules with high accuracy using light was developed. Furthermore, photoactivation systems for controlling biological phenomena are being developed by combining this technique with genome-editing technology (CRISPR/Cas9 System) or DNA recombination technology (Cre-loxP system). Herein, we review the history of optogenetics and the latest Magnet System technology and introduce our recently developed photoactivatable Cre knock-in mice with temporal-, spatial-, and cell-specific accuracy.

    DOI: 10.18926/AMO/63202

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  • Establishment of high-throughput drug screening system using human limb bud mesenchymal cells derived from skeletal dysplasia specific iPSC

    Yamada Daisuke, Takao Tomoka, Nakamura Masahiro, Ming Lu, Toguchida Junya, Takarada Takeshi

    Proceedings for Annual Meeting of The Japanese Pharmacological Society   95   2-O-087   2022

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    [Background] To achieve the disease modeling of skeletal dysplasia, human induced pluripotent stem cells (iPSCs) will be useful but the induction method for limb bud mesenchymal (LBM) cells, which can give rise to most of the future limb elements - bone, cartilage and tendon/ligament, has not been established. In this study, we developed the induction and expansion protocol of LBM cells from human iPSCs, and a high-throughput drug screening system using human LBM cells differentiated from iPSC which is derived from patients with skeletal dysplasia.

    [Method] Paired-related homeobox 1 (PRRX1) serves as a marker for the LBM. To assess the induction efficiency of PRRX1 positive cells during each differentiation step, we established PRRX1-tdTomato reporter human iPSC line. Lateral plate mesoderm cells (LPM) derived from PRRX1-tdTomato reporter were used to establish the LBM-inducing method that recapitulates human developmental process. The chondrogenic capacity of expandable LBM (ExpLBM) cells was assessed using our two- or three- dimensional chondrogenic induction method (2DCI or 3DCI). In addition, ExpLBM cells differentiated from iPSCs derived from patients with type II collagenopathy (COL2pathy), one of the skeletal dysplasia arising from mutations in COL2A1, were used to develop high-throughput screening system.

    [Results] By activating WNT signaling and inhibiting BMP/TGFb/headge hog signaling pathways, almost all LPM cells could be induced to PRRX1 positive LBM cells. Interestingly, we found the defined culture method that can not only stably expand LBM cells (ExpLBM) but also maintain their PRRX1 expression. ExpLBM formed Alcian Blue positive nodules under 2DCI condition and Safranin O positive cartilaginous particles under 3DCI condition. 2DCI-based high-throughput screening system found that several chemicals improved the chondrogenic capacity of ExpLBM derived from COL2pathy patient.

    [Conclusion] ExpLBM cells will be a potential tool to study human bone development, cartilage regeneration and drug discovery using disease-specific human iPSCs.

    DOI: 10.1254/jpssuppl.95.0_2-o-087

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  • O‐GlcNAcylation drives calcium signaling toward osteoblast differentiation: A bioinformatics‐oriented study

    Yao Weng, Ziyi Wang, Yoko Fukuhara, Airi Tanai, Mika Ikegame, Daisuke Yamada, Takeshi Takarada, Takashi Izawa, Satoru Hayano, Kaya Yoshida, Hiroshi Kamioka, Hirohiko Okamura

    BioFactors   47 ( 6 )   992 - 1015   2021.8

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    DOI: 10.1002/biof.1774

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    Other Link: https://onlinelibrary.wiley.com/doi/full-xml/10.1002/biof.1774

  • Induction and expansion of human PRRX1+ limb-bud-like mesenchymal cells from pluripotent stem cells. International journal

    Daisuke Yamada, Masahiro Nakamura, Tomoka Takao, Shota Takihira, Aki Yoshida, Shunsuke Kawai, Akihiro Miura, Lu Ming, Hiroyuki Yoshitomi, Mai Gozu, Kumi Okamoto, Hironori Hojo, Naoyuki Kusaka, Ryosuke Iwai, Eiji Nakata, Toshifumi Ozaki, Junya Toguchida, Takeshi Takarada

    Nature biomedical engineering   5 ( 8 )   926 - 940   2021.8

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    Current protocols for the differentiation of human pluripotent stem cells (hPSCs) into chondrocytes do not allow for the expansion of intermediate progenitors so as to prospectively assess their chondrogenic potential. Here we report a protocol that leverages PRRX1-tdTomato reporter hPSCs for the selective induction of expandable and ontogenetically defined PRRX1+ limb-bud-like mesenchymal cells under defined xeno-free conditions, and the prospective assessment of the cells' chondrogenic potential via the cell-surface markers CD90, CD140B and CD82. The cells, which proliferated stably and exhibited the potential to undergo chondrogenic differentiation, formed hyaline cartilaginous-like tissue commensurate to their PRRX1-expression levels. Moreover, we show that limb-bud-like mesenchymal cells derived from patient-derived induced hPSCs can be used to identify therapeutic candidates for type II collagenopathy and we developed a method to generate uniformly sized hyaline cartilaginous-like particles by plating the cells on culture dishes coated with spots of a zwitterionic polymer. PRRX1+ limb-bud-like mesenchymal cells could facilitate the mass production of chondrocytes and cartilaginous tissues for applications in drug screening and tissue engineering.

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  • 悪性末梢神経鞘腫瘍におけるPRRX1の悪性化因子としての役割

    たき平 将太, 山田 大祐, 高尾 知佳, 中田 英二, 近藤 宏也, 佐藤 浩平, 畑 利彰, 藤原 智洋, 国定 俊之, 尾崎 敏文, 宝田 剛志

    日本整形外科学会雑誌   95 ( 8 )   S1554 - S1554   2021.8

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  • Oncogenic potential of human pluripotent stem cell-derived lung organoids with HER2 overexpression. International journal

    Akihiro Miura, Daisuke Yamada, Masahiro Nakamura, Shuta Tomida, Dai Shimizu, Yan Jiang, Tomoka Takao, Hiromasa Yamamoto, Ken Suzawa, Kazuhiko Shien, Masaomi Yamane, Masakiyo Sakaguchi, Shinichi Toyooka, Takeshi Takarada

    International journal of cancer   149 ( 8 )   1593 - 1604   2021.6

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    Lung adenocarcinoma (LUAD) is the most common types among lung cancers generally arising from terminal airway and understanding of multistep carcinogenesis is crucial to develop novel therapeutic strategy for LUAD. Here we used human induced pluripotent stem cells (hiPSCs) to establish iHER2-hiPSCs in which doxycycline induced the expression of the oncoprotein human epidermal growth factor receptor 2 (HER2)/ERBB2. Lung progenitors that differentiated from iHER2-hiPSCs, which expressed NKX2-1/TTF-1 known as a lung lineage maker, were cocultured with human fetal fibroblast and formed human lung organoids (HLOs) comprising alveolar type 2-like cells. HLOs that overexpressed HER2 transformed to tumor-like structures similar to atypical adenomatous hyperplasia, which is known for lung precancerous lesion and upregulated the activities of oncogenic signaling cascades such as RAS/RAF/MAPK and PI3K/AKT/mTOR. The degree of morphological irregularity and proliferation capacity were significantly higher in HLOs from iHER2-hiPSCs. Moreover, the transcriptome profile of the HLOs shifted from a normal lung tissue-like state to one characteristic of clinical LUAD with HER2 amplification. Our results suggest that hiPSC-derived HLOs may serve as a model to recapitulate the early tumorigenesis of LUAD and would provide new insights into the molecular basis of tumor initiation and progression.

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  • RUNX2 regulates leukemic cell metabolism and chemotaxis in high-risk T cell acute lymphoblastic leukemia. International journal

    Filip Matthijssens, Nitesh D Sharma, Monique Nysus, Christian K Nickl, Huining Kang, Dominique R Perez, Beatrice Lintermans, Wouter Van Loocke, Juliette Roels, Sofie Peirs, Lisa Demoen, Tim Pieters, Lindy Reunes, Tim Lammens, Barbara De Moerloose, Filip Van Nieuwerburgh, Dieter L Deforce, Laurence C Cheung, Rishi S Kotecha, Martijn Dp Risseeuw, Serge Van Calenbergh, Takeshi Takarada, Yukio Yoneda, Frederik W van Delft, Richard B Lock, Seth D Merkley, Alexandre Chigaev, Larry A Sklar, Charles G Mullighan, Mignon L Loh, Stuart S Winter, Stephen P Hunger, Steven Goossens, Eliseo F Castillo, Wojciech Ornatowski, Pieter Van Vlierberghe, Ksenia Matlawska-Wasowska

    The Journal of clinical investigation   131 ( 6 )   2021.3

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    T cell acute lymphoblastic leukemia (T-ALL) is an aggressive hematologic malignancy with inferior outcome compared with that of B cell ALL. Here, we show that Runt-related transcription factor 2 (RUNX2) was upregulated in high-risk T-ALL with KMT2A rearrangements (KMT2A-R) or an immature immunophenotype. In KMT2A-R cells, we identified RUNX2 as a direct target of the KMT2A chimeras, where it reciprocally bound the KMT2A promoter, establishing a regulatory feed-forward mechanism. Notably, RUNX2 was required for survival of immature and KMT2A-R T-ALL cells in vitro and in vivo. We report direct transcriptional regulation of CXCR4 signaling by RUNX2, thereby promoting chemotaxis, adhesion, and homing to medullary and extramedullary sites. RUNX2 enabled these energy-demanding processes by increasing metabolic activity in T-ALL cells through positive regulation of both glycolysis and oxidative phosphorylation. Concurrently, RUNX2 upregulation increased mitochondrial dynamics and biogenesis in T-ALL cells. Finally, as a proof of concept, we demonstrate that immature and KMT2A-R T-ALL cells were vulnerable to pharmacological targeting of the interaction between RUNX2 and its cofactor CBFβ. In conclusion, we show that RUNX2 acts as a dependency factor in high-risk subtypes of human T-ALL through concomitant regulation of tumor metabolism and leukemic cell migration.

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  • PRRX1 promotes malignant properties in human osteosarcoma. International journal

    Ryoji Joko, Daisuke Yamada, Masahiro Nakamura, Aki Yoshida, Shota Takihira, Tomoka Takao, Ming Lu, Kohei Sato, Tatsuo Ito, Toshiyuki Kunisada, Eiji Nakata, Toshifumi Ozaki, Takeshi Takarada

    Translational oncology   14 ( 1 )   100960 - 100960   2021.1

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    Paired related homeobox 1 (PRRX1) is a marker of limb bud mesenchymal cells, and deficiency of p53 or Rb in Prrx1-positive cells induces osteosarcoma in several mouse models. However, the regulatory roles of PRRX1 in human osteosarcoma have not been defined. In this study, we performed PRRX1 immunostaining on 35 human osteosarcoma specimens to assess the correlation between PRRX1 level and overall survival. In patients with osteosarcoma, the expression level of PRRX1 positively correlated with poor prognosis or the ratio of lung metastasis. Additionally, we found PRRX1 expression on in 143B cells, a human osteosarcoma line with a high metastatic capacity. Downregulation of PRRX1 not only suppressed proliferation and invasion but also increased the sensitivity to cisplatin and doxorubicin. When 143B cells were subcutaneously transplanted into nude mice, PRRX1 knockdown decreased tumor sizes and rates of lung metastasis. Interestingly, forskolin, a chemical compound identified by Connectivity Map analysis using RNA expression signatures during PRRX1 knockdown, decreased tumor proliferation and cell migration to the same degree as PRRX1 knockdown. These results demonstrate that PRRX1 promotes tumor malignancy in human osteosarcoma.

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  • BMP-2/β-TCP Local Delivery for Bone Regeneration in MRONJ-Like Mouse Model. International journal

    Akihiro Mikai, Mitsuaki Ono, Ikue Tosa, Ha Thi Thu Nguyen, Emilio Satoshi Hara, Shuji Nosho, Aya Kimura-Ono, Kumiko Nawachi, Takeshi Takarada, Takuo Kuboki, Toshitaka Oohashi

    International journal of molecular sciences   21 ( 19 )   2020.9

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    Medication-related osteonecrosis of the jaw (MRONJ) is a severe pathological condition associated mainly with the long-term administration of bone resorption inhibitors, which are known to induce suppression of osteoclast activity and bone remodeling. Bone Morphogenetic Protein (BMP)-2 is known to be a strong inducer of bone remodeling, by directly regulating osteoblast differentiation and osteoclast activity. This study aimed to evaluate the effects of BMP-2 adsorbed onto beta-tricalcium phosphate (β-TCP), which is an osteoinductive bioceramic material and allows space retention, on the prevention and treatment of MRONJ in mice. Tooth extraction was performed after 3 weeks of zoledronate (ZA) and cyclophosphamide (CY) administration. For prevention studies, BMP-2/β-TCP was transplanted immediately after tooth extraction, and the mice were administered ZA and CY for an additional 4 weeks. The results showed that while the tooth extraction socket was mainly filled with a sparse tissue in the control group, bone formation was observed at the apex of the tooth extraction socket and was filled with a dense connective tissue rich in cellular components in the BMP-2/β-TCP transplanted group. For treatment studies, BMP-2/β-TCP was transplanted 2 weeks after tooth extraction, and bone formation was followed up for the subsequent 4 weeks under ZA and CY suspension. The results showed that although the tooth extraction socket was mainly filled with soft tissue in the control group, transplantation of BMP-2/β-TCP could significantly accelerate bone formation, as shown by immunohistochemical analysis for osteopontin, and reduce the bone necrosis in tooth extraction sockets. These data suggest that the combination of BMP-2/β-TCP could become a suitable therapy for the management of MRONJ.

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  • Core Binding Factors are essential for ovulation, luteinization, and female fertility in mice. International journal

    Somang Lee-Thacker, Hayce Jeon, Yohan Choi, Ichiro Taniuchi, Takeshi Takarada, Yukio Yoneda, CheMyong Ko, Misung Jo

    Scientific reports   10 ( 1 )   9921 - 9921   2020.6

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    Core Binding Factors (CBFs) are a small group of heterodimeric transcription factor complexes composed of DNA binding proteins, RUNXs, and a non-DNA binding protein, CBFB. The LH surge increases the expression of Runx1 and Runx2 in ovulatory follicles, while Cbfb is constitutively expressed. To investigate the physiological significance of CBFs, we generated a conditional mutant mouse model in which granulosa cell expression of Runx2 and Cbfb was deleted by the Esr2Cre. Female Cbfbflox/flox;Esr2cre/+;Runx2flox/flox mice were infertile; follicles developed to the preovulatory follicle stage but failed to ovulate. RNA-seq analysis of mutant mouse ovaries collected at 11 h post-hCG unveiled numerous CBFs-downstream genes that are associated with inflammation, matrix remodeling, wnt signaling, and steroid metabolism. Mutant mice also failed to develop corpora lutea, as evident by the lack of luteal marker gene expression, marked reduction of vascularization, and excessive apoptotic staining in unruptured poorly luteinized follicles, consistent with dramatic reduction of progesterone by 24 h after hCG administration. The present study provides in vivo evidence that CBFs act as essential transcriptional regulators of both ovulation and luteinization by regulating the expression of key genes that are involved in inflammation, matrix remodeling, cell differentiation, vascularization, and steroid metabolisms in mice.

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  • Establishment of a tTA-dependent photoactivatable Cre recombinase knock-in mouse model for optogenetic genome engineering. Reviewed International journal

    Tomoka Takao, Yuichi Hiraoka, Kenji Kawabe, Daisuke Yamada, Lu Ming, Kohichi Tanaka, Moritoshi Sato, Takeshi Takarada

    Biochemical and biophysical research communications   526 ( 1 )   213 - 217   2020.5

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    The Cre-loxP recombination system is widely used to generate genetically modified mice for biomedical research. Recently, a highly efficient photoactivatable Cre (PA-Cre) based on reassembly of split Cre fragments has been established. This technology enables efficient DNA recombination that is activated upon blue light illumination with spatiotemporal precision. In this study, we generated a tTA-dependent photoactivatable Cre-loxP recombinase knock-in mouse model (TRE-PA-Cre mice) using a CRISPR/Cas9 system. These mice were crossed with ROSA26-tdTomato mice (Cre reporter mouse) to visualize DNA recombination as marked by tdTomato expression. We demonstrated that external noninvasive LED blue light illumination allows efficient DNA recombination in the liver of TRE-PA-Cre:ROSA26-tdTomato mice transfected with tTA expression vectors using hydrodynamic tail vein injection. The TRE-PA-Cre mouse established here promises to be useful for optogenetic genome engineering in a noninvasive, spatiotemporal, and cell-type specific manner in vivo.

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  • A RUNX2 stabilization pathway mediates physiologic and pathologic bone formation. International journal

    Jung-Min Kim, Yeon-Suk Yang, Kwang Hwan Park, Xianpeng Ge, Ren Xu, Na Li, Minkyung Song, Hyunho Chun, Seoyeon Bok, Julia F Charles, Odile Filhol-Cochet, Brigitte Boldyreff, Teresa Dinter, Paul B Yu, Ning Kon, Wei Gu, Takeshi Takarada, Matthew B Greenblatt, Jae-Hyuck Shim

    Nature communications   11 ( 1 )   2289 - 2289   2020.5

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    The osteoblast differentiation capacity of skeletal stem cells (SSCs) must be tightly regulated, as inadequate bone formation results in low bone mass and skeletal fragility, and over-exuberant osteogenesis results in heterotopic ossification (HO) of soft tissues. RUNX2 is essential for tuning this balance, but the mechanisms of posttranslational control of RUNX2 remain to be fully elucidated. Here, we identify that a CK2/HAUSP pathway is a key regulator of RUNX2 stability, as Casein kinase 2 (CK2) phosphorylates RUNX2, recruiting the deubiquitinase herpesvirus-associated ubiquitin-specific protease (HAUSP), which stabilizes RUNX2 by diverting it away from ubiquitin-dependent proteasomal degradation. This pathway is important for both the commitment of SSCs to osteoprogenitors and their subsequent maturation. This CK2/HAUSP/RUNX2 pathway is also necessary for HO, as its inhibition blocked HO in multiple models. Collectively, active deubiquitination of RUNX2 is required for bone formation and this CK2/HAUSP deubiquitination pathway offers therapeutic opportunities for disorders of inappropriate mineralization.

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  • 骨肉腫におけるPRRX1の発現は悪性化に関与する

    上甲 良二, 山田 大祐, 中田 英二, たき平 将太, 尾崎 敏文, 宝田 剛志

    中部日本整形外科災害外科学会雑誌   63 ( 春季学会 )   212 - 212   2020.4

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  • Glutamatergic neurons in the medial prefrontal cortex mediate the formation and retrieval of cocaine-associated memories in mice. Reviewed International journal

    Tong Zhang, Junko Yanagida, Hironori Kamii, Shintaro Wada, Masaki Domoto, Hitoki Sasase, Satoshi Deyama, Takeshi Takarada, Eiichi Hinoi, Kenji Sakimura, Akihiro Yamanaka, Takashi Maejima, Michihiro Mieda, Takeshi Sakurai, Naoya Nishitani, Kazuki Nagayasu, Shuji Kaneko, Masabumi Minami, Katsuyuki Kaneda

    Addiction biology   25 ( 1 )   e12723   2020.1

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    In drug addiction, environmental stimuli previously associated with cocaine use readily elicit cocaine-associated memories, which persist long after abstinence and trigger cocaine craving and consumption. Although previous studies suggest that the medial prefrontal cortex (mPFC) is involved in the expression of cocaine-addictive behaviors, it remains unclear whether excitatory and inhibitory neurons in the mPFC are causally related to the formation and retrieval of cocaine-associated memories. To address this issue, we used the designer receptors exclusively activated by designer drugs (DREADD) technology combined with a cocaine-induced conditioned place preference (CPP) paradigm. We suppressed mPFC neuronal activity in a cell-type- and timing-dependent manner. C57BL/6J wild-type mice received bilateral intra-mPFC infusion of an adeno-associated virus (AAV) expressing inhibitory DREADD (hM4Di) under the control of CaMKII promotor to selectively suppress mPFC pyramidal neurons. GAD67-Cre mice received bilateral intra-mPFC infusion of a Cre-dependent AAV expressing hM4Di to specifically silence GABAergic neurons. Chemogenetic suppression of mPFC pyramidal neurons significantly attenuated both the acquisition and expression of cocaine CPP, while suppression of mPFC GABAergic neurons affected neither the acquisition nor expression of cocaine CPP. Moreover, chemogenetic inhibition of mPFC glutamatergic neurons did not affect the acquisition and expression of lithium chloride-induced conditioned place aversion. These results suggest that the activation of glutamatergic, but not GABAergic, neurons in the mPFC mediates both the formation and retrieval of cocaine-associated memories.

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  • 【脳の半分を占めるグリア細胞 脳と心と体をつなぐ"膠"】(第2章)グリア細胞と神経免疫・臓器連関 ペリサイト機能欠損による血液脳関門の破綻

    中里 亮太, 山田 大祐, 宝田 剛志

    実験医学   37 ( 17 )   2854 - 2860   2019.11

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  • Postnatal Runx2 deletion leads to low bone mass and adipocyte accumulation in mice bone tissues. Reviewed International journal

    Ikue Tosa, Daisuke Yamada, Misa Yasumatsu, Eiichi Hinoi, Mitsuaki Ono, Toshitaka Oohashi, Takuo Kuboki, Takeshi Takarada

    Biochemical and biophysical research communications   516 ( 4 )   1229 - 1233   2019.9

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    Global gene deletion studies have established that Runt-related transcription factor-2 (Runx2) is essential during skeletogenesis for osteoblastic differentiation in both intramembranous and endochondral ossification processes. However, the postnatal significance of Runx2 in vivo is poorly understood because a global Runx2 deletion causes perinatal lethality. In this study, we generated tamoxifen-induced Runx2 global deficient mice by crossing Runx2flox mice with ROSA26-CreERT2 mice (Rosa26-CreERT2; Runx2flox/flox). Four-week-old mice were intraperitoneally treated with tamoxifen for five consecutive days, sacrificed, and analyzed six weeks after tamoxifen administration. Deletion of Runx2 led to low bone mass, which is associated with decreased bone formation and bone resorption as well as excessive bone marrow adiposity. Collectively, postnatal Runx2 absolutely plays an important role in maintaining the homeostasis of bone tissues not only in bone mass, but also in the bone marrow environment.

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  • 時期特異的Runx2欠損マウスを用いた成体におけるRunx2の機能解析

    土佐 郁恵, 河邊 憲司, 大野 充昭, 窪木 拓男, 宝田 剛志

    日本骨代謝学会学術集会プログラム抄録集   37回   216 - 216   2019.9

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  • Runx2 is required for postnatal intervertebral disc tissue growth and development. Reviewed International journal

    Lifan Liao, Hua Jiang, Yunshan Fan, Ronald S Lu, Changli Wei, Takeshi Takarada, Shisheng He, Di Chen

    Journal of cellular physiology   234 ( 5 )   6679 - 6687   2019.5

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    Runx2 plays an essential role in embryonic disc tissue development in mice. However, the role of runt-related transcription factor 2 (Runx2) in postnatal disc tissue growth and development has not been defined. In the present studies, we generated Runx2 conditional knockout (KO) mice (Runx2Agc1ER ), in which Runx2 was deleted in Aggrecan-expressing cells in disc tissue at postnatal 2-weeks of age. We then analyzed changes in disc tissue growth and development using histology and immunohistochemical methods in 3-month-old mice. We found that large vacuolated notochordal cells were accumulated in the nucleus pulposus (NP) in Runx2 KO mice. The growth plate cartilage tissue in the disc was thicker in Runx2 KO mice. We also found a significant upregulation of Indian hedgehog (Ihh) expression in the cells in NP cells and in annulus fibrosus cells of Runx2 KO mice. These results demonstrated that Runx2 may play an important role in postnatal disc tissue development through interacting with Ihh signaling.

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  • 骨髄間葉系幹細胞におけるRunx2の発現低下は骨および骨髄の加齢様変化をもたらす

    土佐 郁恵, 山田 大祐, 大野 充昭, 大橋 俊孝, 窪木 拓男, 宝田 剛志

    日本補綴歯科学会誌   11 ( 特別号 )   129 - 129   2019.5

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  • Glutamatergic neurons in the medial prefrontal cortex mediate the formation and retrieval of cocaine-associated memories in mice

    Zhang, Tong, Yanagida, Junko, Kamii, Hironori, Wada, Shintaro, Domoto, Masaki, Sasase, Hitoki, Deyama, Satoshi, Takarada, Takeshi, Hinoi, Eiichi, Sakimura, Kenji, Yamanaka, Akihiro, Maejima, Takashi, Mieda, Michihiro, Sakurai, Takeshi, Nishitani, Naoya, Nagayasu, Kazuki, Kaneko, Shuji, Minami, Masabumi, Kaneda, Katsuyuki

    Addiction biology   Epub   2019.2

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    In drug addiction, environmental stimuli previously associated with cocaine use readily elicit cocaine-associated memories, which persist long after abstinence and trigger cocaine craving and consumption. Although previous studies suggest that the medial prefrontal cortex (mPFC) is involved in the expression of cocaine-addictive behaviors, it remains unclear whether excitatory and inhibitory neurons in the mPFC are causally related to the formation and retrieval of cocaine-associated memories. To address this issue, we used the designer receptors exclusively activated by designer drugs (DREADD) technology combined with a cocaine-induced conditioned place preference (CPP) paradigm. We suppressed mPFC neuronal activity in a cell-type- and timing-dependent manner. C57BL/6J wild-type mice received bilateral intra-mPFC infusion of an adeno-associated virus (AAV) expressing inhibitory DREADD (hM4Di) under the control of CaMKII promotor to selectively suppress mPFC pyramidal neurons. GAD67-Cre mice received bilateral intra-mPFC infusion of a Cre-dependent AAV expressing hM4Di to specifically silence GABAergic neurons. Chemogenetic suppression of mPFC pyramidal neurons significantly attenu

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  • Bone Marrow Cells Inhibit BMP-2-Induced Osteoblast Activity in the Marrow Environment. Reviewed International journal

    Ha Thi Nguyen, Mitsuaki Ono, Yasutaka Oida, Emilio Satoshi Hara, Taishi Komori, Kentaro Akiyama, Ha Thi Thu Nguyen, Kyaw Thu Aung, Hai Thanh Pham, Ikue Tosa, Takeshi Takarada, Koichi Matsuo, Toshihide Mizoguchi, Toshitaka Oohashi, Takuo Kuboki

    Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research   34 ( 2 )   327 - 332   2019.2

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  • Design, synthesis, and biological evaluation of radioiodinated benzo[d]imidazole-quinoline derivatives for platelet-derived growth factor receptor β (PDGFRβ) imaging. Reviewed International journal

    Nurmaya Effendi, Kenji Mishiro, Takeshi Takarada, Daisuke Yamada, Ryuichi Nishii, Kazuhiro Shiba, Seigo Kinuya, Akira Odani, Kazuma Ogawa

    Bioorganic & medicinal chemistry   27 ( 2 )   383 - 393   2019.1

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    Several malignant tumors and fibrotic diseases are associated with PDGFRβ overexpression and excessive signaling, making this receptor attractive for molecular targeting and imaging approaches. A series of benzo[d]imidazole-quinoline derivatives were designed and synthesized to develop radioiodinated compounds as PDGFRβ-specific imaging probes. The structure activity relationship (SAR) evaluation of the designed compounds was performed. Among them, 2-[5-(2-methoxyethoxy)-1H-benzo[d]imidazol-1-yl]-8-(piperazin-1-yl)quinoline (5a) and 4-{2-[5-(2-methoxyethoxy)-1H-benzo[d]imidazol-1-yl]quinolin-8-yl}morpholine (5d) exhibited a relatively high PDGFRβ-TK inhibitory potency, whereas iodinated 5a derivative 5-iodo-2-[5-(2-methoxyethoxy)-1H-benzo[d]imidazol-1-yl]-8-(piperazin-1-yl)quinoline (8) exhibited a superior inhibitory potency as PDGFRβ inhibitor than iodinated 5d derivative 4-{5-iodo-2-[5-(2-methoxyethoxy)-1H-benzo[d]imidazol-1-yl]quinolin-8-yl}morpholine (11). Furthermore, [125I]8 and [125I]11 were synthesized and evaluated for PDGFRβ radioligand ability, both in vitro and in vivo. Cellular uptake experiments showed that [125I]8 had a higher uptake in BxPC3-luc cells as PDGFRβ-positive cells than [125I]11. Incubation of [125I]8 after pretreatment of PDGFRβ ligands significantly reduced the uptake of [125I]8. In biodistribution experiments using tumor-bearing mice, [125I]8 accumulation in the tumor 1 h postinjection was higher than that of the benzo[d]imidazol-quinoline derivative [125I]IIQP, used in our previous research. These results indicate that [125I]8 could be a promising PDGFRβ imaging agent. Although its clinical application requires further structural modifications, the results obtained in this research may be useful for the development of PDGFRβ-specific radioligands.

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  • Molecular understanding of hierarchy and lineage of mesenchymal stem cells in vivo Reviewed

    Kawabe, K., Takarada, T.

    Folia Pharmacologica Japonica   153 ( 2 )   67 - 72   2019

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  • [Dissecting the Hierarchy and Lineage of Mesenchymal Stem Cells Using Mouse Genetics as a Step toward Drug Discovery and Regenerative Medicine]. Reviewed

    Takeshi Takarada

    Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan   139 ( 6 )   867 - 871   2019

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    The mesenchymal stem cell (MSC) is a type of tissue stem cell. In clinical studies, cultured MSCs have shown important therapeutic effects on diseases via both the reduction of neurological defects and the regulation of immune responses. However, in vivo MSC localization, function, and properties are poorly understood; therefore, the molecular understanding of MSC hierarchy is less advanced compared to hematopoietic stem cell hierarchy. Runt-related transcription factor 2 (Runx2) is an essential transcriptional regulator of osteoblast differentiation from MSCs. Runx2 deficiency in Paired-related homeobox 1 (Prrx1)-derived cells (Runx2Prrx1-/- mice) results in defective intramembranous ossification. Double-positive cells for Prrx1-GFP, and stem cell antigen-1 (Sca1) (Prrx1+Sca1+ cells) in the calvaria, express Runx2 at lower levels, and are more homogeneous and primitive compared with Prrx1+Sca1- cells. Our results suggest that osteoblast differentiation in vivo may begin at the Prrx1+Sca1+ MSC stage, with sequential progression to Prrx1+Sca1- cells, followed by Osterix+Prrx1-Sca1- osteoblast precursors, which eventually form mature α1(I)-collagen+ osteoblasts. This research will enable us to better understand the in vivo molecular biology features of MSCs, leading to their therapeutic applications for tissue repair and regeneration.

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  • Inhibition of the glutamine transporter SNAT1 confers neuroprotection in mice by modulating the mTOR-autophagy system. Reviewed International journal

    Daisuke Yamada, Kenji Kawabe, Ikue Tosa, Shunpei Tsukamoto, Ryota Nakazato, Miki Kou, Koichi Fujikawa, Saki Nakamura, Mitsuaki Ono, Toshitaka Oohashi, Mari Kaneko, Shioi Go, Eiichi Hinoi, Yukio Yoneda, Takeshi Takarada

    Communications biology   2   346 - 346   2019

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    The pathophysiological role of mammalian target of rapamycin complex 1 (mTORC1) in neurodegenerative diseases is established, but possible therapeutic targets responsible for its activation in neurons must be explored. Here we identified solute carrier family 38a member 1 (SNAT1, Slc38a1) as a positive regulator of mTORC1 in neurons. Slc38a1 flox/flox and Synapsin I-Cre mice were crossed to generate mutant mice in which Slc38a1 was selectively deleted in neurons. Measurement of 2,3,5-triphenyltetrazolium chloride (TTC) or the MAP2-negative area in a mouse model of middle cerebral artery occlusion (MCAO) revealed that Slc38a1 deficiency decreased infarct size. We found a transient increase in the phosphorylation of p70S6k1 (pp70S6k1) and a suppressive effect of rapamycin on infarct size in MCAO mice. Autophagy inhibitors completely mitigated the suppressive effect of SNAT1 deficiency on neuronal cell death under in vitro stroke culture conditions. These results demonstrate that SNAT1 promoted ischemic brain damage via mTOR-autophagy system.

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  • Elucidation of the mechanisms underlying regulation of somatic stem cell function: Possible application to the treatment of neuropsychiatric, metabolic bone, and lifestyle diseases Reviewed

    Nakamichi, N., Takarada, T.

    Yakugaku Zasshi   139 ( 6 )   845 - 846   2019

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  • RUNX2 Promotes Malignant Progression in Glioma. Reviewed International journal

    Daisuke Yamada, Koichi Fujikawa, Kenji Kawabe, Takuya Furuta, Mitsutoshi Nakada, Takeshi Takarada

    Neurochemical research   43 ( 11 )   2047 - 2054   2018.11

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    Glioblastoma (GBM) is the most aggressive and lethal form of brain tumor. However, therapeutic strategies against malignant gliomas have not been completely established. Runt-related transcription factor 2 (Runx2) is an essential gene for skeletal development but its regulatory role in the malignant progression of glioma remains unclear. Here we investigated expression levels of RUNX2 in glioma tissues and its regulatory effects on aberrant growth of glioma cells. RUNX2 mRNA levels were higher in GBM tissues than that of normal brains or low-grade gliomas. RUNX2 protein was detected in five out of seven human GBM cell lines and its level was positively correlated with proliferative capacity. Stable transduction of dominant-negative Runx2 in rat-derived C6 glioma cells not only inhibited the promoter activity containing Runx2 response element, but also decreased mRNA expression levels of Runx2 target genes, such as Mmp13 and Spp1, as well as the proliferative capacity. Furthermore, transient introduction of Runx2-targeted siRNAs into C6 glioma cells significantly decreased mRNA expression levels of Mmp13 and Spp1 and the proliferative capacity. Furthermore, Runx2 knockdown suppressed both Ccnd1 mRNA expression and activation of the Ccnd1 promoter by forskolin, a PKA-activating reagent, in C6 glioma cells. Our results demonstrate that cross-talk between cAMP/PKA signaling and RUNX2 promotes a malignant phenotype of glioma cells.

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  • The MAPK Erk5 is necessary for proper skeletogenesis involving a Smurf-Smad-Sox9 molecular axis. Reviewed International journal

    Takashi Iezaki, Kazuya Fukasawa, Tetsuhiro Horie, Gyujin Park, Samuel Robinson, Michio Nakaya, Hiroyuki Fujita, Yuki Onishi, Kakeru Ozaki, Takashi Kanayama, Manami Hiraiwa, Yuka Kitaguchi, Katsuyuki Kaneda, Yukio Yoneda, Takeshi Takarada, X Edward Guo, Hitoshi Kurose, Eiichi Hinoi

    Development (Cambridge, England)   145 ( 14 )   2018.7

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    Erk5 belongs to the mitogen-activated protein kinase (MAPK) family. Following its phosphorylation by Mek5, Erk5 modulates several signaling pathways in a number of cell types. In this study, we demonstrated that Erk5 inactivation in mesenchymal cells causes abnormalities in skeletal development by inducing Sox9, an important transcription factor of skeletogenesis. We further demonstrate that Erk5 directly phosphorylates and activates Smurf2 (a ubiquitin E3 ligase) at Thr249, which promotes the proteasomal degradation of Smad proteins and phosphorylates Smad1 at Ser206 in the linker region known to trigger its proteasomal degradation by Smurf1. Smads transcriptionally activated the expression of Sox9 in mesenchymal cells. Accordingly, removal of one Sox9 allele in mesenchymal cells from Erk5-deficient mice rescued some abnormalities of skeletogenesis. These findings highlight the importance of the Mek5-Erk5-Smurf-Smad-Sox9 axis in mammalian skeletogenesis.

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  • Radiobrominated benzimidazole-quinoline derivatives as Platelet-derived growth factor receptor beta (PDGFRβ) imaging probes. Reviewed International journal

    Nurmaya Effendi, Kenji Mishiro, Takeshi Takarada, Akira Makino, Daisuke Yamada, Yoji Kitamura, Kazuhiro Shiba, Yasushi Kiyono, Akira Odani, Kazuma Ogawa

    Scientific reports   8 ( 1 )   10369 - 10369   2018.7

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    Platelet-derived growth factor receptor beta (PDGFRβ) affects in numerous human cancers and has been recognized as a promising molecular target for cancer therapies. The overexpression of PDGFRβ could be a biomarker for cancer diagnosis. Radiolabeled ligands having high affinity for the molecular target could be useful tools for the imaging of overexpressed receptors in tumors. In this study, we aimed to develop radiobrominated PDGFRβ ligands and evaluate their effectiveness as PDGFRβ imaging probes. The radiolabeled ligands were designed by modification of 1-{2-[5-(2-methoxyethoxy)-1H- benzo[d]imidazol-1-yl]quinolin-8-yl}piperidin-4-amine (1), which shows selective inhibition profile toward PDGFRβ. The bromine atom was introduced directly into C-5 of the quinoline group of 1, or indirectly by the conjugation of 1 with the 3-bromo benzoyl group. [77Br]1-{5-Bromo-2-[5-(2-methoxyethoxy)-1H-benzo[d]imidazol-1-yl]quinoline-8-yl}piperidin-4-amine ([77Br]2) and [77Br]-N-3-bromobenzoyl-1-{2-[5-(2-methoxyethoxy)-1H-benzo[d]imidazol-1-yl]quinolin-8-yl}-piperidin-4-amine ([77Br]3) were prepared using a bromodestannylation reaction. In a cellular uptake study, [77Br]2 and [77Br]3 more highly accumulatd in BxPC3-luc cells (PDGFRβ-positive) than in MCF7 cells (PDGFRβ-negative), and their accumulation was significantly reduced by pretreatment with inhibitors. In biodistribution experiments, [77Br]2 accumulation was higher than [77Br]3 accumulation at 1 h postinjection. These findings suggest that [76Br]2 is more promising for positron emission tomography (PET) imaging of PDGFRβ than [76Br]3.

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  • Physiological role of urothelial cancer-associated one long noncoding RNA in human skeletogenic cell differentiation. Reviewed International journal

    Takanori Ishikawa, Takashi Nishida, Mitsuaki Ono, Takeshi Takarada, Ha Thi Nguyen, Shinnosuke Kurihara, Takayuki Furumatsu, Yurika Murase, Masaharu Takigawa, Toshitaka Oohashi, Hiroshi Kamioka, Satoshi Kubota

    Journal of cellular physiology   233 ( 6 )   4825 - 4840   2018.6

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    A vast number of long-noncoding RNAs (lncRNA) are found expressed in human cells, which RNAs have been developed along with human evolution. However, the physiological functions of these lncRNAs remain mostly unknown. In the present study, we for the first time uncovered the fact that one of such lncRNAs plays a significant role in the differentiation of chondrocytes and, possibly, of osteoblasts differentiated from mesenchymal stem cells, which cells eventually construct the human skeleton. The urothelial cancer-associated 1 (UCA1) lncRNA is known to be associated with several human malignancies. Firstly, we confirmed that UCA1 was expressed in normal human chondrocytes, as well as in a human chondrocytic cell line; whereas it was not detected in human bone marrow mesenchymal stem cells (hBMSCs). Of note, although UCA1 expression was undetectable in hBMSCs, it was markedly induced along with the differentiation toward chondrocytes, suggesting its critical role in chondrogenesis. Consistent with this finding, silencing of the UCA1 gene significantly repressed the expression of chondrogenic genes in human chondrocytic cells. UCA1 gene silencing and hyper-expression also had a significant impact on the osteoblastic phenotype in a human cell line. Finally, forced expression of UCA1 in a murine chondrocyte precursor, which did not possess a UCA1 gene, overdrove its differentiation into chondrocytes. These results indicate a physiological and important role of this lncRNA in the skeletal development of humans, who require more sustained endochondral ossification and osteogenesis than do smaller vertebrates.

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  • 生後の骨・軟骨におけるアグリカンの役割の解明

    鳥原 秀美, 大野 充昭, 栗原 伸之介, 枝松 緑, 宝田 剛志, 上岡 寛, 大橋 俊孝

    日本結合組織学会学術大会プログラム・抄録集   50回   155 - 155   2018.6

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  • Core Binding Factor β Expression in Ovarian Granulosa Cells Is Essential for Female Fertility. Reviewed International journal

    Somang Lee-Thacker, Yohan Choi, Ichiro Taniuchi, Takeshi Takarada, Yukio Yoneda, CheMyong Ko, Misung Jo

    Endocrinology   159 ( 5 )   2094 - 2109   2018.5

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    Core binding factor β (CBFβ) is a non-DNA-binding partner of all RUNX proteins and critical for transcription activity of CBF transcription factors (RUNXs/CBFβ). In the ovary, the expression of Runx1 and Runx2 is highly induced by the luteinizing hormone (LH) surge in ovulatory follicles, whereas Cbfb is constitutively expressed. To investigate the physiological significance of CBFs in the ovary, the current study generated two different conditional mutant mouse models in which granulosa cell expression of Cbfb and Runx2 was reduced by Cre recombinase driven by an Esr2 promoter. Cbfbgc-/- and Cbfbgc-/- × Runx2gc+/- mice exhibited severe subfertility and infertility, respectively. In the ovaries of both mutant mice, follicles develop normally, but the majority of preovulatory follicles failed to ovulate either in response to human chorionic gonadotropin administration in pregnant mare serum gonadotropin-primed immature animals or after the LH surge at 5 months of age. Morphological and physiological changes in the corpus luteum of these mutant mice revealed the reduced size, progesterone production, and vascularization, as well as excessive lipid accumulation. In granulosa cells of periovulatory follicles and corpora lutea of these mice, the expression of Edn2, Ptgs1, Lhcgr, Sfrp4, Wnt4, Ccrl2, Lipg, Saa3, and Ptgfr was also drastically reduced. In conclusion, the current study provided in vivo evidence that CBFβ plays an essential role in female fertility by acting as a critical cofactor of CBF transcription factor complexes, which regulate the expression of specific key ovulatory and luteal genes, thus coordinating the ovulatory process and luteal development/function in mice.

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  • Type IV collagen α6 chain is a regulator of keratin 10 in keratinization of oral mucosal epithelium. Reviewed International journal

    Taishi Komori, Mitsuaki Ono, Emilio Satoshi Hara, Junji Ueda, Ha Thi Thu Nguyen, Ha Thi Nguyen, Tomoko Yonezawa, Takahiro Maeba, Aya Kimura-Ono, Takeshi Takarada, Ryusuke Momota, Kenji Maekawa, Takuo Kuboki, Toshitaka Oohashi

    Scientific reports   8 ( 1 )   2612 - 2612   2018.2

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  • Disruption of Bmal1 Impairs Blood-Brain Barrier Integrity via Pericyte Dysfunction. Reviewed International journal

    Ryota Nakazato, Kenji Kawabe, Daisuke Yamada, Shinsuke Ikeno, Michihiro Mieda, Shigeki Shimba, Eiichi Hinoi, Yukio Yoneda, Takeshi Takarada

    The Journal of neuroscience : the official journal of the Society for Neuroscience   37 ( 42 )   10052 - 10062   2017.10

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  • Synthesis and evaluation of radioiodinated 1-{2-[5-(2-methoxyethoxy)-1H-benzo[d]imidazol-1-yl]quinolin-8-yl}piperidin-4-amine derivatives for platelet-derived growth factor receptor β (PDGFRβ) imaging. Reviewed International journal

    Nurmaya Effendi, Kazuma Ogawa, Kenji Mishiro, Takeshi Takarada, Daisuke Yamada, Yoji Kitamura, Kazuhiro Shiba, Takehiko Maeda, Akira Odani

    Bioorganic & medicinal chemistry   25 ( 20 )   5576 - 5585   2017.10

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  • Deletion of Runx2 in Articular Chondrocytes Decelerates the Progression of DMM-Induced Osteoarthritis in Adult Mice. Reviewed International journal

    Lifan Liao, Shanxing Zhang, Jianhong Gu, Takeshi Takarada, Yukio Yoneda, Jian Huang, Lan Zhao, Chun-do Oh, Jun Li, Baoli Wang, Meiqing Wang, Di Chen

    Scientific reports   7 ( 1 )   2371 - 2371   2017.5

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  • Bone Resorption Is Regulated by Circadian Clock in Osteoblasts Reviewed

    Takeshi Takarada, Cheng Xu, Hiroki Ochi, Ryota Nakazato, Daisuke Yamada, Saki Nakamura, Ayumi Kodama, Shigeki Shimba, Michihiro Mieda, Kazuya Fukasawa, Kakeru Ozaki, Takashi Iezaki, Koichi Fujikawa, Yukio Yoneda, Rika Numano, Akiko Hida, Hajime Tei, Shu Takeda, Eiichi Hinoi

    Journal of Bone and Mineral Research   32 ( 4 )   872 - 881   2017.4

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  • Bone Resorption Is Regulated by Circadian Clock in Osteoblasts. Reviewed International journal

    Takeshi Takarada, Cheng Xu, Hiroki Ochi, Ryota Nakazato, Daisuke Yamada, Saki Nakamura, Ayumi Kodama, Shigeki Shimba, Michihiro Mieda, Kazuya Fukasawa, Kakeru Ozaki, Takashi Iezaki, Koichi Fujikawa, Yukio Yoneda, Rika Numano, Akiko Hida, Hajime Tei, Shu Takeda, Eiichi Hinoi

    Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research   32 ( 4 )   872 - 881   2017.4

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  • The transcriptional modulator Ifrd1 controls PGC-1 alpha expression under short-term adrenergic stimulation in brown adipocytes Reviewed

    Gyujin Park, Tetsuhiro Horie, Takashi Kanayama, Kazuya Fukasawa, Takashi Iezaki, Yuki Onishi, Kakeru Ozaki, Yukari Nakamura, Yukio Yoneda, Takeshi Takarada, Eiichi Hinoi

    FEBS JOURNAL   284 ( 5 )   784 - 795   2017.3

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  • The intrinsic microglial clock system regulates interleukin-6 expression. Reviewed International journal

    Ryota Nakazato, Shogo Hotta, Daisuke Yamada, Miki Kou, Saki Nakamura, Yoshifumi Takahata, Hajime Tei, Rika Numano, Akiko Hida, Shigeki Shimba, Michihiro Mieda, Eiichi Hinoi, Yukio Yoneda, Takeshi Takarada

    Glia   65 ( 1 )   198 - 208   2017.1

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  • Transcriptional Modulator Ifrd1 Regulates Osteoclast Differentiation through Enhancing the NF-kappa B/NFATc1 Pathway Reviewed

    Takashi Iezaki, Kazuya Fukasawa, Gyujin Park, Tetsuhiro Horie, Takashi Kanayama, Kakeru Ozaki, Yuki Onishi, Yoshifumi Takahata, Yukari Nakamura, Takeshi Takarada, Yukio Yoneda, Takashi Nakamura, Jean Vacher, Eiichi Hinoi

    MOLECULAR AND CELLULAR BIOLOGY   36 ( 19 )   2451 - 2463   2016.10

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  • ATF3 deficiency in chondrocytes alleviates osteoarthritis development Reviewed

    Takashi Iezaki, Kakeru Ozaki, Kazuya Fukasawa, Makoto Inoue, Shigetaka Kitajima, Takeshi Muneta, Shu Takeda, Hiroyuki Fujita, Yuki Onishi, Tetsuhiro Horie, Yukio Yoneda, Takeshi Takarada, Eiichi Hinoi

    JOURNAL OF PATHOLOGY   239 ( 4 )   426 - 437   2016.8

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  • ATF3 controls proliferation of osteoclast precursor and bone remodeling Reviewed

    Kazuya Fukasawa, Gyujin Park, Takashi Iezaki, Tetsuhiro Horie, Takashi Kanayama, Kakeru Ozaki, Yuki Onishi, Yoshifumi Takahata, Yukio Yoneda, Takeshi Takarada, Shigetaka Kitajima, Jean Vacher, Eiichi Hinoi

    SCIENTIFIC REPORTS   6   30918   2016.8

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  • Circadian Clock Regulates Bone Resorption in Mice Reviewed

    Cheng Xu, Hiroki Ochi, Toru Fukuda, Shingo Sato, Satoko Sunamura, Takeshi Takarada, Eiichi Hinoi, Atsushi Okawa, Shu Takeda

    JOURNAL OF BONE AND MINERAL RESEARCH   31 ( 7 )   1344 - 1355   2016.7

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  • Protective upregulation of activating transcription factor-3 against glutamate neurotoxicity in neuronal cells under ischemia Reviewed

    Takeshi Takarada, Miki Kou, Miho Hida, Ryo Fukumori, Saki Nakamura, Takaya Kutsukake, Nobuyuki Kuramoto, Eiichi Hinoi, Yukio Yoneda

    JOURNAL OF NEUROSCIENCE RESEARCH   94 ( 5 )   378 - 388   2016.5

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  • Possible activation by the green tea amino acid theanine of mammalian target of rapamycin signaling in undifferentiated neural progenitor cells in vitro Reviewed

    Takeshi Takarada, Noritaka Nakamichi, Ryota Nakazato, Takami Kakuda, Hiroshi Kokubo, Shinsuke Ikeno, Saki Nakamura, Nobuyuki Kuramoto, Eiichi Hinoi, Yukio Yoneda

    Biochemistry and Biophysics Reports   5   89 - 95   2016.3

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  • The Transcriptional Modulator Interferon-Related Developmental Regulator 1 in Osteoblasts Suppresses Bone Formation and Promotes Bone Resorption Reviewed

    Takashi Iezaki, Yuki Onishi, Kakeru Ozaki, Kazuya Fukasawa, Yoshifumi Takahata, Yukari Nakamura, Koichi Fujikawa, Takeshi Takarada, Yukio Yoneda, Yui Yamashita, Go Shioi, Eiichi Hinoi

    JOURNAL OF BONE AND MINERAL RESEARCH   31 ( 3 )   573 - 584   2016.3

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  • Upregulation of Slc38a1 Gene Along with Promotion of Neurosphere Growth and Subsequent Neuronal Specification in Undifferentiated Neural Progenitor Cells Exposed to Theanine Reviewed

    Takeshi Takarada, Masato Ogura, Noritaka Nakamichi, Takami Kakuda, Ryota Nakazato, Hiroshi Kokubo, Shinsuke Ikeno, Saki Nakamura, Takaya Kutsukake, Eiichi Hinoi, Yukio Yoneda

    NEUROCHEMICAL RESEARCH   41 ( 1-2 )   5 - 15   2016.2

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  • Genetic analysis of Runx2 function during intramembranous ossification Reviewed

    Takeshi Takarada, Ryota Nakazato, Azusa Tsuchikane, Koichi Fujikawa, Takashi Iezaki, Yukio Yoneda, Eiichi Hinoi

    DEVELOPMENT   143 ( 2 )   211 - 218   2016.1

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  • Upregulation of Runt-Related Transcription Factor-2 Through CCAAT Enhancer Binding Protein-beta Signaling Pathway in Microglial BV-2 Cells Exposed to ATP Reviewed

    Ryota Nakazato, Takeshi Takarada, Shinsuke Ikeno, Saki Nakamura, Takaya Kutsukake, Eiichi Hinoi, Yukio Yoneda

    JOURNAL OF CELLULAR PHYSIOLOGY   230 ( 10 )   2510 - 2521   2015.10

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  • Glucose Uptake and Runx2 Synergize to Orchestrate Osteoblast Differentiation and Bone Formation Reviewed

    Jianwen Wei, Junko Shimazu, Munevver P. Makinistoglu, Antonio Maurizi, Daisuke Kajimura, Haihong Zong, Takeshi Takarada, Takashi Lezaki, Jeffrey E. Pessin, Eiichi Hinoi, Gerard Karsenty

    CELL   161 ( 7 )   1576 - 1591   2015.6

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  • Potential Interactions of Calcium-Sensitive Reagents with Zinc Ion in Different Cultured Cells Reviewed

    Koichi Fujikawa, Ryo Fukumori, Saki Nakamura, Takaya Kutsukake, Takeshi Takarada, Yukio Yoneda

    PLOS ONE   10 ( 5 )   e0127421   2015.5

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  • Daily oral intake of theanine prevents the decline of 5-bromo-2 '-deoxyuridine incorporation in hippocampal dentate gyrus with concomitant alleviation of behavioral abnormalities in adult mice with severe traumatic stress Reviewed

    Takeshi Takarada, Noritaka Nakamichi, Takami Kakuda, Ryota Nakazato, Hiroshi Kokubo, Shinsuke Ikeno, Saki Nakamura, Eiichi Hinoi, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   127 ( 3 )   292 - 297   2015.3

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  • Analysis of the signaling cascade of transcription factors in joint tissue with the aim of drug discovery Reviewed

    Takarada, T.

    Folia Pharmacologica Japonica   144 ( 4 )   178 - 184   2014.10

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  • Recent advances in Runx2 research Reviewed

    Takarada, T.

    Folia Pharmacologica Japonica   144 ( 2 )   98 - 98   2014.8

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  • Constitutive and functional expression of runt-related transcription factor-2 by microglial cells Reviewed

    Ryota Nakazato, Takeshi Takarada, Takumi Watanabe, Binh Thanh Nguyen, Shinsuke Ikeno, Eiichi Hinoi, Yukio Yoneda

    NEUROCHEMISTRY INTERNATIONAL   74   24 - 35   2014.7

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  • Recent advances in research on mesenchymal stem cells

    Takarada Takeshi

    Folia Pharmacologica Japonica   144 ( 6 )   305 - 305   2014

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  • An Analysis of Skeletal Development in Osteoblast-Specific and Chondrocyte-Specific Runt- Related Transcription Factor-2 ( Runx2) Knockout Mice Reviewed

    Takeshi Takarada, Eiichi Hinoi, Ryota Nakazato, Hiroki Ochi, Cheng Xu, Azusa Tsuchikane, Shu Takeda, Gerard Karsenty, Takaya Abe, Hiroshi Kiyonari, Yukio Yoneda

    JOURNAL OF BONE AND MINERAL RESEARCH   28 ( 10 )   2064 - 2069   2013.10

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  • Regulatory Mechanisms of Skeletal Tissues by Amino Acid Signaling Reviewed

    Takeshi Takarada

    YAKUGAKU ZASSHI-JOURNAL OF THE PHARMACEUTICAL SOCIETY OF JAPAN   133 ( 7 )   799 - 802   2013.7

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  • Mitochondrial uncoupling protein-2 in glutamate neurotoxicity. Reviewed

    Takarada T, Fukumori R, Yoneda Y

    Nihon yakurigaku zasshi. Folia pharmacologica Japonica   142 ( 1 )   13 - 16   2013.7

  • Selective Inhibition by Ethanol of Mitochondrial Calcium Influx Mediated by Uncoupling Protein-2 in Relation to N-Methyl-D-Aspartate Cytotoxicity in Cultured Neurons Reviewed

    Ryo Fukumori, Takeshi Takarada, Ryota Nakazato, Koichi Fujikawa, Miki Kou, Eiichi Hinoi, Yukio Yoneda

    PLOS ONE   8 ( 7 )   e69718   2013.7

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  • Myosin VI Reduces Proliferation, but Not Differentiation, in Pluripotent P19 Cells Reviewed

    Takeshi Takarada, Miki Kou, Noritaka Nakamichi, Masato Ogura, Yuma Ito, Ryo Fukumori, Hiroshi Kokubo, Gabriela B. Acosta, Eiichi Hinoi, Yukio Yoneda

    PLoS ONE   8 ( 5 )   e63947   2013.5

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  • A negative correlation between Per1 and Sox6 expression during chondrogenic differentiation in pre-chondrocytic ATDC5 cells Reviewed

    Nguyen Quynh Le, Nguyen Thanh Binh, Takeshi Takarada, Mika Takarada-Iemata, Eiichi Hinoi, Yukio Yoneda

    Journal of Pharmacological Sciences   122 ( 4 )   318 - 325   2013

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  • Possible neuroprotective property of nicotinic acetylcholine receptors in association with predominant upregulation of glial cell line-derived neurotrophic factor in astrocytes Reviewed

    Takeshi Takarada, Noritaka Nakamichi, Hirofumi Kawagoe, Masato Ogura, Ryo Fukumori, Ryota Nakazato, Koichi Fujikawa, Miki Kou, Yukio Yoneda

    JOURNAL OF NEUROSCIENCE RESEARCH   90 ( 11 )   2074 - 2085   2012.11

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  • Promoted Neuronal Differentiation after Activation of Alpha4/Beta2 Nicotinic Acetylcholine Receptors in Undifferentiated Neural Progenitors Reviewed

    Takeshi Takarada, Noritaka Nakamichi, Seiya Kitajima, Ryo Fukumori, Ryota Nakazato, Nguyen Quynh Le, Yeong-Hun Kim, Koichi Fujikawa, Miki Kou, Yukio Yoneda

    PLOS ONE   7 ( 10 )   e46177   2012.10

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  • Clock Genes Influence Gene Expression in Growth Plate and Endochondral Ossification in Mice Reviewed

    Takeshi Takarada, Ayumi Kodama, Shogo Hotta, Michihiro Mieda, Shigeki Shimba, Eiichi Hinoi, Yukio Yoneda

    JOURNAL OF BIOLOGICAL CHEMISTRY   287 ( 43 )   36081 - 36095   2012.10

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  • Promotion of Both Proliferation and Neuronal Differentiation in Pluripotent P19 Cells with Stable Overexpression of the Glutamine Transporter slc38a1 Reviewed

    Masato Ogura, Takami Kakuda, Takeshi Takarada, Noritaka Nakamichi, Ryo Fukumori, Yeong-Hun Kim, Eiichi Hinoi, Yukio Yoneda

    PLOS ONE   7 ( 10 )   e48270   2012.10

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  • Osteoclastogenesis is negatively regulated by D-serine produced by osteoblasts Reviewed

    Takeshi Takarada, Mika Takarada-Iemata, Yoshifumi Takahata, Daisuke Yamada, Tomomi Yamamoto, Yukari Nakamura, Eiichi Hinoi, Yukio Yoneda

    JOURNAL OF CELLULAR PHYSIOLOGY   227 ( 10 )   3477 - 3487   2012.10

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  • Signaling Factors in a Variety of Cells Derived from Mesenchymal Stem Cells Reviewed

    Takeshi Takarada

    YAKUGAKU ZASSHI-JOURNAL OF THE PHARMACEUTICAL SOCIETY OF JAPAN   132 ( 10 )   1145 - 1149   2012.10

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  • Possible involvement of mitochondrial uncoupling protein-2 in cytotoxicity mediated by acquired N-methyl-D-aspartate receptor channels Reviewed

    Ryo Fukumori, Takeshi Takarada, Yuki Kambe, Ryota Nakazato, Koichi Fujikawa, Yukio Yoneda

    NEUROCHEMISTRY INTERNATIONAL   61 ( 4 )   498 - 505   2012.9

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  • Positive Regulation by gamma-Aminobutyric Acid B Receptor Subunit-1 of Chondrogenesis through Acceleration of Nuclear Translocation of Activating Transcription Factor-4 Reviewed

    Yoshifumi Takahata, Eiichi Hinoi, Takeshi Takarada, Yukari Nakamura, Shinya Ogawa, Yukio Yoneda

    JOURNAL OF BIOLOGICAL CHEMISTRY   287 ( 40 )   33293 - 33303   2012.9

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  • Delayed Mitochondrial Membrane Potential Disruption by ATP in Cultured Rat Hippocampal Neurons Exposed to N-Methyl-D-Aspartate Reviewed

    Koichi Fujikawa, Noritaka Nakamichi, Shunsuke Kato, Ryo Fukumori, Miho Hida, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   119 ( 1 )   20 - 29   2012.5

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  • Possible Modulation of Process Extension by N-Methyl-D-aspartate Receptor Expressed in Osteocytic MLO-Y4 Cells Reviewed

    Hiroyuki Fujita, Eiichi Hinoi, Eri Nakatani, Tomomi Yamamoto, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   119 ( 1 )   112 - 116   2012.5

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  • Transferrin receptor-1 suppresses neurite outgrowth in neuroblastoma Neuro2A cells Reviewed

    Yukary Nakamura, Noritaka Nakamichi, Takeshi Takarada, Kiyokazu Ogita, Yukio Yoneda

    NEUROCHEMISTRY INTERNATIONAL   60 ( 5 )   448 - 457   2012.4

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  • Positive Regulation of Osteoclastic Differentiation by Growth Differentiation Factor 15 Upregulated in Osteocytic Cells Under Hypoxia Reviewed

    Eiichi Hinoi, Hiroki Ochi, Takeshi Takarada, Eri Nakatani, Takashi Iezaki, Hiroko Nakajima, Hiroyuki Fujita, Yoshifumi Takahata, Shinya Hidano, Takashi Kobayashi, Shu Takeda, Yukio Yoneda

    JOURNAL OF BONE AND MINERAL RESEARCH   27 ( 4 )   938 - 949   2012.4

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  • Artificial orchestration of functional NMDAR channels in HEK293 cells Reviewed

    Takaya Katsurayama, Ryo Fukumori, Takeshi Takarada, Yukio Yoneda

    Japanese Journal of Neuropsychopharmacology   32 ( 2 )   113 - 114   2012.4

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  • NR2-reactive antibody decreases cell viability through augmentation of Ca2+ influx in systemic lupus erythematosus Reviewed

    Takahisa Gono, Takeshi Takarada, Ryo Fukumori, Yasushi Kawaguchi, Hirotaka Kaneko, Masanori Hanaoka, Yasuhiro Katsumata, Yukio Yoneda, Hisashi Yamanaka

    ARTHRITIS AND RHEUMATISM   63 ( 12 )   3952 - 3959   2011.12

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  • Negative Regulation of Osteoblastogenesis Through Downregulation of Runt-Related Transcription Factor-2 in Osteoblastic MC3T3-E1 Cells with Stable Overexpression of the Cystine/Glutamate Antiporter xCT Subunit Reviewed

    Kyosuke Uno, Takeshi Takarada, Mika Takarada-Iemata, Yukari Nakamura, Hiroyuki Fujita, Eiichi Hinoi, Yukio Yoneda

    JOURNAL OF CELLULAR PHYSIOLOGY   226 ( 11 )   2953 - 2964   2011.11

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  • Osteoblastic gamma-Aminobutyric Acid, Type B Receptors Negatively Regulate Osteoblastogenesis toward Disturbance of Osteoclastogenesis Mediated by Receptor Activator of Nuclear Factor kappa B Ligand in Mouse Bone Reviewed

    Yoshifumi Takahata, Takeshi Takarada, Eiichi Hinoi, Yukari Nakamura, Hiroyuki Fujita, Yukio Yoneda

    JOURNAL OF BIOLOGICAL CHEMISTRY   286 ( 38 )   32906 - 32917   2011.9

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  • A possible pivotal role of mitochondrial free calcium in neurotoxicity mediated by N-methyl-D-aspartate receptors in cultured rat hippocampal neurons Reviewed

    Yuki Kambe, Noritaka Nakamichi, Takeshi Takarada, Ryo Fukumori, Ryota Nakazato, Eiichi Hinoi, Yukio Yoneda

    NEUROCHEMISTRY INTERNATIONAL   59 ( 1 )   10 - 20   2011.8

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  • Selective Upregulation of Pen1 mRNA Expression by ATP Through Activation of P2X7 Purinergic Receptors Expressed in Microglial Cells Reviewed

    Ryota Nakazato, Takeshi Takarada, Tomomi Yamamoto, Shogo Hotta, Eiichi Hinoi, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   116 ( 4 )   350 - 361   2011.8

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  • Selective downregulation of N-methyl-D-aspartate receptor (NMDAR) rather than non-NMDAR subunits in ipsilateral cerebral hemispheres in rats with middle cerebral artery occlusion Reviewed

    Takeshi Takarada, Tomoya Hara, Shiho Konishi, Ryota Nakazato, Yukio Yoneda

    Japanese Journal of Neuropsychopharmacology   31 ( 4 )   187 - 194   2011.8

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  • Positive Regulation by GABA(B)R1 Subunit of Leptin Expression through Gene Transactivation in Adipocytes Reviewed

    Yukari Nakamura, Eiichi Hinoi, Takeshi Takarada, Yoshifumi Takahata, Tomomi Yamamoto, Hiroyuki Fujita, Saya Takada, Syota Hashizume, Yukio Yoneda

    PLOS ONE   6 ( 5 )   e20167   2011.5

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  • [Role of glutamine transporter expressed in astroglia cells in glutamic acid-induced neuronal death]. Reviewed

    Safuru, A., Kokura, M., Takarada, T., Yoneta, Y.

    Nihon shinkei seishin yakurigaku zasshi = Japanese journal of psychopharmacology   31 ( 2 )   91 - 93   2011.4

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  • Exacerbated vulnerability to oxidative stress in astrocytic C6 glioma cells with stable overexpression of the glutamine transporter slc38a1 Reviewed

    Masato Ogura, Takeshi Takarada, Noritaka Nakamichi, Hirofumi Kawagoe, Aya Sako, Ryota Nakazato, Yukio Yoneda

    NEUROCHEMISTRY INTERNATIONAL   58 ( 4 )   504 - 511   2011.3

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  • A Negative Correlation Between Expression Profiles of Runt-Related Transcription Factor-2 and Cystine/Glutamate Antiporter xCT Subunit in Ovariectomized Mouse Bone Reviewed

    Kyosuke Uno, Takeshi Takarada, Yukari Nakamura, Hiroyuki Fujita, Eiichi Hinoi, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   115 ( 3 )   309 - 319   2011.3

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  • Glutamate Preferentially Suppresses Osteoblastogenesis Than Adipogenesis Through the Cystine/Glutamate Antiporter in Mesenchymal Stem Cells Reviewed

    Mika Takarada-Iemata, Takeshi Takarada, Yukari Nakamura, Eri Nakatani, Osamu Hori, Yukio Yoneda

    JOURNAL OF CELLULAR PHYSIOLOGY   226 ( 3 )   652 - 665   2011.3

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  • GABAB R1サブユニット欠損マウスにおける神経系前駆細胞の機能変化

    福井 正樹, 小澤 秀介, 宝田 剛志, 米田 幸雄

    日本薬理学雑誌   137 ( 3 )   29P - 29P   2011.3

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  • Gradual Downregulation of Protein Expression of the Partner GABA(B)R2 Subunit During Postnatal Brain Development in Mice Defective of GABA(B)R1 Subunit Reviewed

    Masaki Fukui, Shusuke Ozawa, Noritaka Nakamichi, Ryota Nakazato, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   115 ( 1 )   45 - 55   2011.1

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  • Requirement of both NR3A and NR3B subunits for dominant negative properties on Ca2+ mobilization mediated by acquired N-methyl-D-aspartate receptor channels into mitochondria Reviewed

    Ryo Fukumori, Takeshi Takarada, Noritaka Nakamichi, Yuki Kambe, Hirofumi Kawagoe, Ryota Nakazato, Yukio Yoneda

    NEUROCHEMISTRY INTERNATIONAL   57 ( 7 )   730 - 737   2010.12

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  • Preferential Inhibition by Antidiarrheic 2-Methoxy-4-Methylphenol of Ca2+ Influx Across Acquired N-Methyl-D-Aspartate Receptor Channels Composed of NR1/NR2B Subunit Assembly Reviewed

    Noritaka Nakamichi, Ryo Fukumori, Takeshi Takarada, Yuki Kambe, Tomomi Yamamoto, Nobuyuki Matsushima, Nobuaki Moriguchi, Yukio Yoneda

    JOURNAL OF NEUROSCIENCE RESEARCH   88 ( 11 )   2483 - 2493   2010.8

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  • Induced Tolerance to Glutamate Neurotoxicity Through Down-Regulation of NR2 Subunits of N-Methyl-D-Aspartate Receptors in Cultured Rat Striatal Neurons Reviewed

    Yuki Kambe, Noritaka Nakamichi, Takeshi Takarada, Ryo Fukumori, Yukio Yoneda

    JOURNAL OF NEUROSCIENCE RESEARCH   88 ( 10 )   2177 - 2187   2010.8

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  • Inhibition by 2-Methoxy-4-ethylphenol of Ca2+ Influx Through Acquired and Native N-Methyl-D-aspartate-Receptor Channels Reviewed

    Ryo Fukumori, Noritaka Nakamichi, Takeshi Takarada, Yuki Kambe, Nobuyuki Matsushima, Nobuaki Moriguchi, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   112 ( 3 )   273 - 281   2010.3

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  • Interference by adrenaline with chondrogenic differentiation through suppression of gene transactivation mediated by Sox9 family members Reviewed

    Takeshi Takarada, Hironori Hojo, Mika Iemata, Koichi Sahara, Ayumi Kodama, Nobuhiro Nakamura, Eiichi Hinoi, Yukio Yoneda

    BONE   45 ( 3 )   568 - 578   2009.9

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  • Interference With Cellular Differentiation by D-Serine Through Antagonism at N-Methyl-D-Aspartate Receptors Composed of NR1 and NR3A Subunits in Chondrocytes Reviewed

    Takeshi Takarada, Yoshifumi Takahata, Mika Iemata, Eiichi Hinoi, Kyosuke Uno, Takao Hirai, Tomomi Yamamoto, Yukio Yoneda

    JOURNAL OF CELLULAR PHYSIOLOGY   220 ( 3 )   756 - 764   2009.9

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  • A protein-protein interaction of stress-responsive myosin VI endowed to inhibit neural progenitor self-replication with RNA binding protein, TLS, in murine hippocampus Reviewed

    Takeshi Takarada, Keisuke Tamaki, Toru Takumi, Masato Ogura, Yuma Ito, Noritaka Nakamichi, Yukio Yoneda

    JOURNAL OF NEUROCHEMISTRY   110 ( 5 )   1457 - 1468   2009.9

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  • Possible Promotion of Neuronal Differentiation in Fetal Rat Brain Neural Progenitor Cells After Sustained Exposure to Static Magnetism Reviewed

    Noritaka Nakamichi, Yukichi Ishioka, Takao Hirai, Shusuke Ozawa, Masaki Tachibana, Nobuhiro Nakamura, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF NEUROSCIENCE RESEARCH   87 ( 11 )   2406 - 2417   2009.8

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  • Possible Protection by Notoginsenoside R1 against Glutamate Neurotoxicity Mediated by N-methyl-D-aspartate Receptors Composed of an NR1/NR2B Subunit Assembly Reviewed

    Bin Gu, Noritaka Nakamichi, Wen-Sheng Zhang, Yukary Nakamura, Yuki Kambe, Ryo Fukumori, Kazuhiro Takuma, Kiyofumi Yamada, Takeshi Takarada, Hideo Taniura, Yukio Yoneda

    JOURNAL OF NEUROSCIENCE RESEARCH   87 ( 9 )   2145 - 2156   2009.7

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  • Neurogenesis Mediated by gamma-Aminobutyric Acid and Glutamate Signaling Reviewed

    Noritaka Nakamichi, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   110 ( 2 )   133 - 149   2009.6

  • GABA-B受容体を介した神経系細胞系譜への分化調節(Modulation of differentiation into neural lineages through GABAB receptors)

    小澤 秀介, 福井 正樹, 宝田 剛志, 米田 幸雄

    神経化学   48 ( 2-3 )   212 - 212   2009.6

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  • Predominant Promotion by Tacrolimus of Chondrogenic Differentiation to Proliferating Chondrocytes Reviewed

    Yukari Nakamura, Takeshi Takarada, Ayumi Kodama, Eiichi Hinoi, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   109 ( 3 )   413 - 423   2009.3

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    DOI: 10.1254/jphs.08315FP

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  • Transactivation by Runt related factor-2 of matrix metalloproteinase-13 in astrocytes Reviewed

    Takeshi Takarada, Yukio Yoneda

    NEUROSCIENCE LETTERS   451 ( 2 )   99 - 104   2009.2

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    DOI: 10.1016/j.neulet.2008.12.037

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  • Functional Expression of beta(2) Adrenergic Receptors Responsible for Protection Against Oxidative Stress Through Promotion of Glutathione Synthesis After Nrf2 Upregulation in Undifferentiated Mesenchymal C3H10T1/2 Stem Cells Reviewed

    Yoshifumi Takahata, Takeshi Takarada, Mika Iemata, Tomomi Yamamoto, Yukary Nakamura, Ayumi Kodama, Yukio Yoneda

    JOURNAL OF CELLULAR PHYSIOLOGY   218 ( 2 )   268 - 275   2009.2

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  • A critical importance of polyamine site in NMDA receptors for neurite outgrowth and fasciculation at early stages of P19 neuronal differentiation Reviewed

    Danko Georgiev, Hideo Taniura, Yuki Kambe, Takeshi Takarada, Yukio Yoneda

    EXPERIMENTAL CELL RESEARCH   314 ( 14 )   2603 - 2617   2008.8

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    DOI: 10.1016/j.yexcr.2008.06.009

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  • GABAシグナルによるマウス神経系前駆細胞の増殖と分化の調節(Modulation of proliferation and differentiation by GABAergic signaling in murine neural progenitor cells)

    小澤 秀介, 福井 正樹, 寳田 剛志, 谷浦 秀夫, 中道 範隆, 米田 幸雄

    神経化学   47 ( 2-3 )   225 - 225   2008.8

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  • Differential regulation of cellular maturation in chondrocytes and osteoblasts by glycine Reviewed

    Yoshifumi Takahata, Takeshi Takarada, Masato Osawa, Eiichi Hinoi, Yukari Nakamura, Yukio Yoneda

    CELL AND TISSUE RESEARCH   333 ( 1 )   91 - 103   2008.7

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    DOI: 10.1007/s00441-008-0607-7

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  • Serine racemase suppresses chondrogenic differentiation in cartilage in a Sox9-dependent manner Reviewed

    Takeshi Takarada, Eiichi Hinoi, Yoshifumi Takahata, Yukio Yoneda

    JOURNAL OF CELLULAR PHYSIOLOGY   215 ( 2 )   320 - 328   2008.5

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    DOI: 10.1002/icp.21310

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  • Glutamate as a signal mediator in bone Reviewed

    Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   106 ( 4 )   536 - 541   2008.4

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    DOI: 10.1254/jphs.FM0070243

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  • A role of the clock gene Period1 in chondrogenic differentiation Reviewed

    Ayumi Kodama, Koichi Sahara, Takeshi Takarada, Yukio Yoneda

    YAKUGAKU ZASSHI-JOURNAL OF THE PHARMACEUTICAL SOCIETY OF JAPAN   128   142 - 144   2008

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  • Protective effect of notoginsenoside R1 in Panax notoginseng on glutamate-induced neurotoxicity Reviewed

    Bin Gu, Yukary Nakamura, Yuki Kambe, Kazuhiro Takuma, Kiyofumi Yamada, Wen-Sheng Zhang, Takeshi Takarada, Noritaka Nakamichi, Yukio Yoneda

    YAKUGAKU ZASSHI-JOURNAL OF THE PHARMACEUTICAL SOCIETY OF JAPAN   128   184 - 187   2008

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  • Osteoblast protects osteoclast devoid of sodium-dependent vitamin C transporters from oxidative cytotoxicity of ascorbic acid Reviewed

    Takeshi Takarada, Eiichi Hinoi, Yuki Kambe, Koichi Sahara, Shintaro Kurokawa, Yoshifumi Takahata, Yukio Yoneda

    EUROPEAN JOURNAL OF PHARMACOLOGY   575 ( 1-3 )   1 - 11   2007.12

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    DOI: 10.1016/j.ejphar.2007.07.041

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  • Suppression by glutamate of proliferative activity through glutathione depletion mediated by the Cystine/Glutamate antiporter in mesenchymal C3H10T1/2 stem cells Reviewed

    Mika Iemata, Takeshi Takarada, Eiichi Hinoi, Hideo Taniura, Yukio Yoneda

    JOURNAL OF CELLULAR PHYSIOLOGY   213 ( 3 )   721 - 729   2007.12

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  • Glutamate is a determinant of cellular proliferation through modulation of nuclear factor E2 p45-related factor-2 expression in osteoblastic MC3T3-E1 cells Reviewed

    Kyosuke Uno, Takeshi Takarada, Eiichi Hinoi, Yukio Yoneda

    JOURNAL OF CELLULAR PHYSIOLOGY   213 ( 1 )   105 - 114   2007.10

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    DOI: 10.1002/jcp.21095

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  • Glutamate suppresses osteoclastogenesis through the cystine/glutamate antiporter Reviewed

    Eiichi Hinoi, Takeshi Takarada, Kyosuke Uno, Maki Inoue, Yasuhiro Murafuji, Yukio Yoneda

    AMERICAN JOURNAL OF PATHOLOGY   170 ( 4 )   1277 - 1290   2007.4

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    DOI: 10.2353/ajpath.2007.061039

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  • Nuclear factor E2 p45-related factor 2 negatively regulates chondrogenesis Reviewed

    Eiichi Hinoi, Takeshi Takarada, Sayumi Fujimori, Liyang Wang, Mika Iemata, Kyosuke Uno, Yukio Yoneda

    BONE   40 ( 2 )   337 - 344   2007.2

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    DOI: 10.1016/j.bone.2006.08.016

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  • Oral administration of phenolic antidiarrheic ingredients prevents ovariectomy-induced bone loss Reviewed

    Nobuaki Moriguchi, Eiichi Hinoi, Takeshi Takarada, Nobuyuki Matsushima, Kyosuke Uno, Yukio Yoneda

    BIOCHEMICAL PHARMACOLOGY   73 ( 3 )   385 - 393   2007.2

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    DOI: 10.1016/j.bcp.2006.09.025

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  • Possible expression of a particular gamma-aminobutyric acid transporter isoform responsive to upregulation by hyperosmolarity in rat calvarial osteoblasts Reviewed

    Sayumi Fujimori, Eiichi Hinoi, Takeshi Takarada, Mika Iemata, Yoshifumi Takahata, Yukio Yoneda

    EUROPEAN JOURNAL OF PHARMACOLOGY   550 ( 1-3 )   24 - 32   2006.11

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    DOI: 10.1016/j.ejphar.2006.08.088

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  • A molecular mechanism of pyruvate protection against cytotoxicity of reactive oxygen species in osteoblasts Reviewed

    Eiichi Hinoi, Takeshi Takarada, Yuriko Tsuchihashi, Sayumi Fujimori, Nobuaki Moriguchi, Liyang Wang, Kyosuke Uno, Yukio Yoneda

    MOLECULAR PHARMACOLOGY   70 ( 3 )   925 - 935   2006.9

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    DOI: 10.1124/mol.106.024398

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  • Cytoprotection by pyruvate through an anti-oxidative mechanism in cultured rat calvarial osteoblasts Reviewed

    N. Moriguchi, E. Hinoi, Y. Tsuchihashi, S. Fujimori, M. Iemata, T. Takarada, Y. Yoneda

    HISTOLOGY AND HISTOPATHOLOGY   21 ( 9 )   969 - 977   2006.9

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  • Up-regulation of per mRNA expression by parathyroid hormone through a protein kinase A-CREB-dependent mechanism in chondrocytes Reviewed

    Eiichi Hinoi, Taichi Ueshima, Hironori Hojo, Mika Iemata, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF BIOLOGICAL CHEMISTRY   281 ( 33 )   23632 - 23642   2006.8

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    DOI: 10.1074/jbc.M512362200

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  • Excitatory amino acid transporters expressed by synovial fibroblasts in rats with collagen-induced arthritis Reviewed

    E Hinoi, R Ohashi, S Miyata, Y Kato, M Iemata, H Hojo, T Takarada, Y Yoneda

    BIOCHEMICAL PHARMACOLOGY   70 ( 12 )   1744 - 1755   2005.12

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    DOI: 10.1016/j.bcp.2005.09.010

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  • Abolition of chondral mineralization by group III metabotropic glutamate receptors expressed in rodent cartilage Reviewed

    LY Wang, E Hinoi, A Takemori, T Takarada, Y Yoneda

    BRITISH JOURNAL OF PHARMACOLOGY   146 ( 5 )   732 - 743   2005.11

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    DOI: 10.1038/sj.bjp.0706358

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  • Nuclear condensation of cyclic adenosine monophosphate responsive element-binding protein in discrete murine brain structures Reviewed

    N Kuramoto, K Kubo, K Ogita, J Platenik, VJ Balcar, T Takarada, N Nakamichi, Y Yoneda

    JOURNAL OF NEUROSCIENCE RESEARCH   80 ( 5 )   667 - 676   2005.6

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  • Counteraction by repetitive daily exposure to static magnetism against sustained blockade of N-methyl-D-aspartate receptor channels in cultured rat hippocampal neurons Reviewed

    T Hirai, H Taniura, Y Goto, K Tamaki, H Oikawa, Y Kambe, M Ogura, Y Ohno, T Takarada, Y Yoneda

    JOURNAL OF NEUROSCIENCE RESEARCH   80 ( 4 )   491 - 500   2005.5

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    DOI: 10.1002/jnr.20497

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  • Glutamate transporters as drug targets Reviewed

    Eiichi Hinoi, Takeshi Takarada, Yuriko Tsuchihashi, Yukio Yoneda

    Current Drug Targets: CNS and Neurological Disorders   4 ( 2 )   211 - 220   2005.4

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  • Accumulation of [H-3]glutamate in cultured rat calvarial osteoblasts Reviewed

    T Takarada, E Hinoi, S Fujimori, Y Tsuchihashi, T Ueshima, H Taniura, Y Yoneda

    BIOCHEMICAL PHARMACOLOGY   68 ( 1 )   177 - 184   2004.7

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    DOI: 10.1016/j.bcp.2004.03.020

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  • Possible expression of functional glutamate transporters in the rat testis Reviewed

    T Takarada, E Hinoi, VJ Balcar, H Taniura, Y Yoneda

    JOURNAL OF ENDOCRINOLOGY   181 ( 2 )   233 - 244   2004.5

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  • Glutamate signaling system in bone Reviewed

    E Hinoi, T Takarada, Y Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   94 ( 3 )   215 - 220   2004.3

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    DOI: 10.1254/jphs.94.215

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  • Glutamate signaling in peripheral tissues Reviewed

    E Hinoi, T Takarada, T Ueshima, Y Tsuchihashi, Y Yoneda

    EUROPEAN JOURNAL OF BIOCHEMISTRY   271 ( 1 )   1 - 13   2004.1

  • Modulation by static magnetism of neuronal activity

    Hirai, T., Goto, Y., Takarada, T., Taniura, H., Yoneda, Y.

    Biomedical Reviews   15 ( 1 )   2004

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  • Uptake of [H-3]L-serine in rat brain synaptosomal fractions Reviewed

    T Takarada, VJ Balcar, K Baba, A Takamoto, GB Acosta, K Takano, Y Yoneda

    BRAIN RESEARCH   983 ( 1-2 )   36 - 47   2003.9

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    DOI: 10.1016/S0006-8993(03)03024-5

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  • Facilitation of glutamate release by ionotropic glutamate receptors in osteoblasts Reviewed

    E Hinoi, S Fujimori, T Takarada, H Taniura, Y Yoneda

    BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS   297 ( 3 )   452 - 458   2002.9

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    DOI: 10.1016/S0006-291X(02)02223-4

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Books

  • 骨関節系細胞に発現するグルタメイトシグナル装置に関する分子薬理学的研究

    寶田, 剛志

    [寶田剛志]  2007 

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MISC

  • ヒトiPS細胞由来肢芽間葉系細胞を用いたヒト肢芽発生機序の検討

    高尾知佳, 大曽根達則, 山田大祐, 中田英二, 尾崎敏文, 宝田剛志

    日本再生医療学会総会(Web)   23rd   2024

  • Development of Tissue-engineered Cartilage Using Human iPSC-derived Chondroprogenitors

    太田智之, 太田智之, 岩井良輔, 木股敬裕, 宝田剛志

    Bio Industry   41 ( 2 )   2024

  • ヒト多能性幹細胞由来肢芽間葉系細胞を用いた軟骨分化誘導技術の開発

    山田大祐, 高尾知佳, 中村正裕, 戸口田淳也, 宝田剛志

    日本再生医療学会総会(Web)   22nd   2023

  • 関節軟骨再生を指向したヒトiPS細胞に由来する板状軟骨組織体の開発

    藤澤佑樹, たき平将太, たき平将太, 高尾知佳, 山田大祐, 太田智之, 太田智之, 北口陽平, 北口陽平, 岩井良輔, 中田英二, 木股敬裕, 尾崎敏文, 宝田剛志

    日本整形外科学会雑誌   97 ( 8 )   2023

  • 細胞自己凝集化技術とヒトiPS細胞由来肢芽間葉系細胞を組み合わせた形状型軟骨組織体の作製

    藤澤佑樹, 太田智之, 太田智之, 高尾知佳, 北口陽平, 北口陽平, 山田大祐, 岩井良輔, 木股敬裕, 宝田剛志

    日本再生医療学会総会(Web)   22nd   2023

  • Disease modeling and high-throughput screening using disease-specific human iPSC-derived limb bud mesenchymal cells

    山田大祐, 高尾知佳, 藤澤祐樹, 戸口田淳也, 宝田剛志

    日本軟骨代謝学会プログラム・抄録集   35th   2023

  • ヒトiPS細胞から誘導した肢芽間葉系細胞による軟骨シートの開発

    高尾知佳, 佐藤正人, 豊田恵利子, 藤澤佑樹, 山田大祐, 中田英二, 尾崎敏文, 宝田剛志

    日本再生医療学会総会(Web)   22nd   2023

  • 無糖培地による培養軟骨移植時の内軟骨性骨化抑制法の開発

    北口陽平, 太田智之, 高尾知佳, 岩井良輔, 山田大祐, 大曽根達則, 木股敬裕, 宝田剛志

    日本形成外科学会総会・学術集会プログラム・抄録集   66th   2023

  • Development of an Endochondral Ossification Suppression Method using no glucose medium

    北口陽平, 北口陽平, 太田智之, 太田智之, 高尾知佳, 岩井良輔, 藤澤祐樹, 山田大祐, 大曽根達則, 木股敬裕, 宝田剛志

    日本軟骨代謝学会プログラム・抄録集   35th   2023

  • Production of chondrocyte sheet using human induced pluripotent stem cell-derived limb bud mesenchymal cells

    高尾知佳, 佐藤正人, 豊田恵利子, 藤澤佑樹, 山田大祐, 中田英二, 尾崎敏文, 宝田剛志

    日本軟骨代謝学会プログラム・抄録集   35th   2023

  • Bone regeneration using cartilage tissue by human iPS cell-derived limb bud mesenchymal cells

    中田英二, 佐藤浩平, 高尾知佳, 藤澤祐樹, 山田大祐, 上原健敬, 藤原智洋, 尾崎敏文, 宝田剛志

    移植(Web)   58 ( 3 )   2023

  • Fabrication of scaffold-free tissue-engineered cartilage tissues from human iPS cell-derived limb bud mesenchymal cells with cell-self aggregation technique

    藤澤佑樹, 高尾知佳, 太田智之, 北口陽平, たき平将太, 岩井良輔, 山田大祐, 木股敬裕, 宝田剛志

    組織培養研究(Web)   41 ( 2 )   2023

  • ヒトiPS細胞から誘導した肢芽間葉系細胞による軟骨シートの作製

    藤澤佑樹, 高尾知佳, 佐藤正人, 豊田恵利子, 山田大祐, 中田英二, 尾崎敏文, 宝田剛志

    移植(Web)   57 ( 4 )   2022

  • Induction and stable expansion of human pluripotent stem cell-derived limb bud-mesenchymal cells

    山田大祐, 高尾知佳, 中村正裕, MING Lu, 戸口田淳也, 宝田剛志

    日本軟骨代謝学会プログラム・抄録集   34th   2022

  • Dissecting the heterogeneity of Prrx1-positive cells during limb development by single-cell RNA sequencing analysis

    高尾知佳, 中村正裕, MING Lu, 山田大祐, 北條宏徳, 宝田剛志

    日本軟骨代謝学会プログラム・抄録集   34th   2022

  • ヒトiPS細胞由来肢芽間葉系細胞から作製した軟骨組織体を用いた骨再生研究

    佐藤浩平, 佐藤浩平, 高尾知佳, 藤澤祐樹, 山田大祐, 上原健敬, 依光正則, 中田英二, 尾崎敏文, 宝田剛志

    整形外科バイオマテリアル研究会プログラム・抄録集   41st   2022

  • Preparation of scaffold-free tissue-engineered 3D cartilage construct for application in facial plastic surgery

    太田智之, 太田智之, 高尾知佳, 岩井良輔, 山田大祐, 北口陽平, 北口陽平, 木股敬裕, 宝田剛志

    日本軟骨代謝学会プログラム・抄録集   34th   2022

  • 自己凝集化技術を応用した形状型スキャフォールドフリー三次元培養軟骨の開発

    太田智之, 太田智之, 高尾知佳, 岩井良輔, 山田大祐, 北口陽平, 北口陽平, 森脇健司, 中村正裕, 大曽根達則, 木股敬裕, 宝田剛志

    日本形成外科学会基礎学術集会プログラム・抄録集   31st   2022

  • 形成外科領域における細胞自己凝集化技術を用いたスキャフォールドフリー三次元軟骨培養法の開発

    北口陽平, 北口陽平, 北口陽平, 太田智之, 太田智之, 高尾知佳, 岩井良輔, 山田大祐, 藤澤祐樹, 大曽根達則, 森脇健司, 中村正裕, 木股敬裕, 宝田剛志

    日本形成外科学会基礎学術集会プログラム・抄録集   31st   2022

  • ヒト多能性幹細胞から誘導した肢芽間葉系細胞と,その拡大培養法の開発

    中田英二, 山田大祐, 高尾知佳, たき平将太, たき平将太, 藤原智洋, 尾崎敏文, 宝田剛志

    移植(Web)   57 ( 4 )   2022

  • マウス骨髄内LepR陽性細胞中の細胞不均一性の解析

    高尾知佳, 中村正裕, 山田大祐, 宝田剛志

    日本骨形態計測学会雑誌   32 ( 1 )   2022

  • ヒト多能性幹細胞由来軟骨前駆細胞を用いた硝子軟骨組織作製技術の開発

    明ろ, 山田大祐, 高尾知佳, 戸口田淳也, 宝田剛志

    日本骨代謝学会学術集会プログラム抄録集(CD-ROM)   39th   2021

  • ヒト多能性幹細胞からの軟骨前駆細胞の誘導と,その拡大培養方法の開発

    山田大祐, 高尾知佳, 中村正裕, 戸口田淳也, 宝田剛志

    日本整形外科学会雑誌   95 ( 8 )   2021

  • Heterogeneity and its hierarchy of Prrx1-positive cells during limb development

    中井結希, 高尾知佳, 中村正祐, MING Lu, 山田大祐, 宝田剛志

    日本分子生物学会年会プログラム・要旨集(Web)   44th   2021

  • マウス四肢骨格発生過程の一細胞遺伝子発現解析

    高尾知佳, 明ろ, 山田大祐, 北條宏徳, 宝田剛志

    日本骨代謝学会学術集会プログラム抄録集(CD-ROM)   39th   2021

  • Development of tTA-dependent photoactivatable Cre recombinase knock-in mouse

    高尾知佳, 宝田剛志

    生化学   93 ( 3 )   2021

  • PRRX1の発現は骨肉腫細胞の増殖,転移に関与する

    上甲 良二, 山田 大輔, 中田 英二, 吉田 晶, たき平 将太, 国定 俊之, 尾崎 敏文, 宝田 剛志

    日本整形外科学会雑誌   94 ( 8 )   S1859 - S1859   2020.9

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    Language:Japanese   Publisher:(公社)日本整形外科学会  

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  • SNAT1は脳内のmTOR-オートファジー経路の制御因子である

    山田大祐, 土佐郁恵, 塚本俊平, 米田幸雄, 米田幸雄, 宝田剛志

    日本薬理学雑誌   155 ( Supplement )   2020

  • Postnatal Runx2 deletion causes age-related changes in bone.

    Ikue Tosa, Daisuke Yamada, Shunpei Tsukamoto, Kenji Kawabe, Takeshi Takarada, Mitsuaki Ono, Toshitaka Oohashi, Takuo Kuboki

    JOURNAL OF BONE AND MINERAL RESEARCH   34   219 - 219   2019.12

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  • 【脳の半分を占めるグリア細胞 脳と心と体をつなぐ"膠"】(第2章)グリア細胞と神経免疫・臓器連関 ペリサイト機能欠損による血液脳関門の破綻

    中里 亮太, 山田 大祐, 宝田 剛志

    実験医学   37 ( 17 )   2854 - 2860   2019.11

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  • SNAT1は神経細胞特異的なmTOR-オートファジー経路の制御因子である

    山田大祐, 土佐郁恵, 塚本俊平, 宝田剛志

    日本分子生物学会年会プログラム・要旨集(Web)   42nd   2019

  • 骨髄間葉系幹細胞におけるRunx2の発現低下は骨および骨髄の加齢様変化をもたらす

    土佐郁恵, 土佐郁恵, 山田大祐, 大野充昭, 大野充昭, 大橋俊孝, 窪木拓男, 宝田剛志

    日本補綴歯科学会誌(Web)   11   2019

  • コカイン関連記憶の獲得および想起における内側前頭前野グルタミン酸作動性ニューロンの役割

    Zhang Tong, 上居 寛典, 柳田 淳子, 和田 進太郎, 堂本 将輝, 出山 諭司, 宝田 剛志, 檜井 栄一, 崎村 建司, 山中 章弘, 前島 隆司, 三枝 理博, 櫻井 武, 西谷 直也, 永安 一樹, 金子 周司, 南 雅文, 金田 勝幸

    日本臨床精神神経薬理学会・日本神経精神薬理学会合同年会プログラム・抄録集   28回・48回   216 - 216   2018.11

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  • コカイン関連記憶の獲得および想起における内側前頭前野グルタミン酸作動性ニューロンの役割

    Zhang Tong, 上居 寛典, 柳田 淳子, 和田 進太郎, 堂本 将輝, 出山 諭司, 宝田 剛志, 檜井 栄一, 崎村 建司, 山中 章弘, 前島 隆司, 三枝 理博, 櫻井 武, 西谷 直也, 永安 一樹, 金子 周司, 南 雅文, 金田 勝幸

    日本臨床精神神経薬理学会・日本神経精神薬理学会合同年会プログラム・抄録集   28回・48回   216 - 216   2018.11

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  • 体内時計が血液脳関門の維持に重要

    中里 亮太, 河邊 憲司, 宝田 剛志

    Medical Science Digest   44 ( 11 )   593 - 596   2018.10

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  • 骨髄内加齢変化のRunx2コンディショナル欠損による模倣

    土佐郁恵, 土佐郁恵, 山田大祐, 塚本俊平, 河邊憲司, 大野充昭, 大橋俊孝, 窪木拓男, 宝田剛志

    日本分子生物学会年会プログラム・要旨集(Web)   41st   2018

  • Glucose Uptake and Runx2 Synergize to Orchestrate Osteoblast Differentiation and Bone Formation (vol 161, pg 1576, 2015)

    Jianwen Wei, Junko Shimazu, Munevver P. Makinistoglu, Antonio Maurizi, Daisuke Kajimura, Haihong Zong, Takeshi Takarada, Takashi Iezaki, Jeffrey E. Pessin, Eiichi Hinoi, Gerard Karsenty

    CELL   162 ( 5 )   1169 - 1169   2015.8

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  • 軟骨細胞におけるATF3欠損は変形性関節症の発症を減弱させる

    尾崎翔, 家崎高志, 大西勇気, 宝田剛志, 米田幸雄, 金田勝幸, 北島繁孝, 檜井栄一

    日本薬理学会近畿部会プログラム・要旨集   127th   37   2015.6

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  • 転写調節因子Ifrd1による骨芽細胞制御機構

    家崎高志, 尾崎翔, 大西勇気, 宝田剛志, 米田幸雄, 金田勝幸, 檜井栄一

    日本薬理学会近畿部会プログラム・要旨集   127th   38   2015.6

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  • 虚血性神経細胞障害におけるグルタミントランスポーターSlc38a1の役割

    中村早希, 宝田剛志, 國保博史, 金田勝幸, 米田幸雄

    日本薬理学会近畿部会プログラム・要旨集   128th   42   2015

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  • 骨芽細胞に発現するIfrd1は骨恒常性維持に必須の転写調節因子である

    家崎高志, 尾崎翔, 大西勇気, 宝田剛志, 米田幸雄, 金田勝幸, 檜井栄一

    次世代を担う創薬・医療薬理シンポジウムプログラム・要旨集   2015   21   2015

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  • 虚血性神経細胞障害におけるアミノ酸トランスポーターSlc38a1の役割

    中村早希, 宝田剛志, 國保博史, 金田勝幸, 米田幸雄

    日本薬学会北陸支部総会及び例会プログラム・講演要旨集   127th   33   2015

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  • PROLIFERATION AND DIFFERENTIATION OF NEURAL PROGENITORS EXPOSED TO NICOTINE

    R. Nakazato, T. Takarada, Y. Yoneda

    ALCOHOL AND ALCOHOLISM   49   2014.9

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  • A role of the osteoblastic master regulator, runt-related transcription factor-2, in microglial cells

    Ryota Nakazato, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   124   124P - 124P   2014

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  • The role of uncoupling protein-2 in glutamate neurotoxicity with ischemia

    Ryo Fukumori, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   124   180P - 180P   2014

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  • Analysis of signaling cascade of transcription factors in joint tissue toward drug discovery

    Takeshi Takarada

    JOURNAL OF PHARMACOLOGICAL SCIENCES   124   16P - 16P   2014

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  • Neuropsychiatric systemic lupus erythematosus: Pathophysiology and the future of treatment

    Takahisa Gono, Takeshi Takarada, Yasuhiro Katsumata, Yasushi Kawaguchi, Yukio Yoneda, Hisashi Yamanaka

    International Journal of Clinical Rheumatology   8 ( 5 )   585 - 595   2013.10

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    DOI: 10.2217/ijr.13.48

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  • Mitochondrial uncoupling protein-2 in glutamate neurotoxicity

    Takeshi Takarada, Ryo Fukumori, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   121   21P - 21P   2013

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  • A role of the glutamine transporter slc38a1 in brain

    H. Kokubo, T. Takarada, K. Fujikawa, R. Fukumori, R. Nakazato, Y. Kim, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   123   128 - 128   2012.10

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  • A role of the osteoblastic master regulator, runt-related factor 2 (Runx2), in astrocytes

    T. Takarada, K. Fujikawa, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   123   35 - 35   2012.10

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  • Clock genes expressed by microglia

    S. Hotta, T. Takarada, L. Q. Nguyen, S. Shimba, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   123   90 - 91   2012.10

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  • ATP-induced delay of mitochondrial membrane potential disruption by NMDA in cultured rat hippocampal neurons

    K. Fujikawa, N. Nakamichi, R. Fukumori, T. Takarada, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   123   83 - 83   2012.10

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  • Runt related transcription factor-2 expression by microglial cells

    R. Nakazato, T. Takarada, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   123   91 - 91   2012.10

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  • Neuronal differentiation promotion mediated by nicotinic acetylcholine receptors expressed by neural progenitors

    Y. -H. Kim, T. Takarada, S. Kitajima, R. Fukumori, R. Nakazato, K. Fujikawa, M. Kou, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   123   109 - 109   2012.10

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  • A role of mitochondrial uncoupling protein-2 in NMDA neurotoxicity

    R. Fukumori, T. Takarada, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   123   83 - 83   2012.10

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  • An astrocytic phenotype in Bmal1-null mice

    L. Q. Nguyen, T. Takarada, B. T. Nguyen, R. Fukumori, R. Nakazato, K. Fujikawa, S. Hotta, M. Kou, S. Shimba, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   123   92 - 93   2012.10

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  • Upregulation of Ifrd1 expression in brains of mice with middle cerebral artery occlusion

    M. Kou, T. Takarada, R. Fukumori, R. Nakazato, M. Hida, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   123   62 - 62   2012.10

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  • Functional analysis of the glutamine transporter slc38a1 in brain

    Aya Sako, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   118   119P - 119P   2012

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  • Upregulation of Runx2 expression by ATP in microglial cells

    Ryota Nakazato, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   118   100P - 100P   2012

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  • Functional analysis of dock genes expressed in microglia

    Shogo Hotta, Takeshi Takarada, Shigeki Shimba, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   118   100P - 100P   2012

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  • Regulation of glutamate transport by runt related transcription factor-2 in astrocytes

    Takeshi Takarada, Koichi Fujikawa, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   118   183P - 183P   2012

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  • NMDA neurotoxicity mediated by mitochondrial uncoupling protein-2

    Ryo Fukumori, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   118   119P - 119P   2012

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  • アストログリア細胞に発現するグルタミントランスポーターのグルタミン酸誘発性神経細胞死に対する働き

    佐古 彩, 小椋 正人, 宝田 剛志, 米田 幸雄

    日本神経精神薬理学雑誌 = Japanese journal of psychopharmacology   31 ( 2 )   91 - 93   2011.4

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  • Regulation by osteocyte-derived growth differentiation factor 15 of osteoclast activity

    Eiichi Hinoi, Eri Nakatani, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   115   93P - 93P   2011

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  • Regulation of glutamate transport by runt related factor-2 in astrocytes

    Takeshi Takarada, Kouichi Fujikawa, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   115   114P - 114P   2011

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  • Upregulation of Runx2 expression in microglia exposed to ATP

    Ryota Nakazato, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   115   123P - 123P   2011

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  • CLOCK GENES EXPRESSED BY ASTROGLIA

    B. Nguyen, T. Takarada, A. Kodama, S. Shimba, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   115   18 - 18   2010.10

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  • 転写因子 Fosファミリー (シナプスをめぐるシグナリンク)

    宝田 剛志, 米田 幸雄

    生体の科学   61 ( 5 )   524 - 526   2010.9

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  • The expression of glia-derived neurotrophic factor by nicotine in cultured rat cortical astrocytes

    Hirofumi Kawagoe, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   112   86P - 86P   2010

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  • Construction and analysis of acquired NMDA receptor channels

    Ryo Fukumori, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   112   103P - 103P   2010

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  • Functional analysis of transferrin receptors expressed by neurons

    Yukary Nakamura, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   112   99P - 99P   2010

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  • Promotion of neuronal differentiation in neural progenitors exposed to static magnetism

    Ryouta Nakazato, Noritaka Nakamichi, Yukichi Ishioka, Takeshi Takarada, Yukio Yoneda

    NEUROSCIENCE RESEARCH   68   E130 - E130   2010

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    DOI: 10.1016/j.neures.2010.07.2147

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  • Analysis of validity of cultured osteocytes

    Eri Nakatani, Takeshi Takarada, Eiichi Hinoi, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   112   160P - 160P   2010

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  • Functional changes in osteoblasts with stable transfection of cystine/glutamate antiporter

    Kyosuke Uno, Takeshi Takarada, Eiichi Hinoi, Yuikio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   112   158P - 158P   2010

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  • NR2B subunit selectivity of an antidiarrheic ingredient

    Seiya Kitajima, Nobuyuki Matsushima, Nobuaki Moriguchi, Hitoshi Shibata, Ryo Fukumori, Noritake Nakamichi, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   112   167P - 167P   2010

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  • Inhibition by adrenaline of chondrogenic differentiation

    Ryo Ishiura, Takeshi Takarada, Eiichi Hinoi, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   112   159P - 159P   2010

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  • Neuroprotection by notoginsenoside R1 against glutamate excitotoxicity

    H. Fujita, N. Nakamichi, Y. Kambe, R. Fukumori, T. Takarada, Y. Yoneda

    INTERNATIONAL JOURNAL OF NEUROPSYCHOPHARMACOLOGY   13   185 - 185   2010

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  • A role of glutamine transporter expressed by astrocytes in glutamate neurotoxicity

    A. Sako, M. Ogura, T. Takarada, Y. Yoneda

    INTERNATIONAL JOURNAL OF NEUROPSYCHOPHARMACOLOGY   13   192 - 192   2010

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  • Induction of myosin VI after traumatic stress

    Yuma Ito, Takeshi Takarada, Yukio Yoneda

    NEUROSCIENCE RESEARCH   68   E369 - E369   2010

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    DOI: 10.1016/j.neures.2010.07.1637

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  • Analysis of properties of NR3 subunits in acquired NMDAR channels

    Ryo Fukumori, Takeshi Takarada, Yukio Yoneda

    NEUROSCIENCE RESEARCH   68   E223 - E223   2010

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    DOI: 10.1016/j.neures.2010.07.983

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  • Responsiveness of Ifrd1 as a differentiation regulator in neural progenitors to brain ischemia

    Shiho Konishi, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   112   100P - 100P   2010

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  • Expression of a bone master regulator gene in the brain

    T. Takarada, Y. Yoneda

    INTERNATIONAL JOURNAL OF NEUROPSYCHOPHARMACOLOGY   13   194 - 195   2010

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  • Promoted neuronal differentiation by static magnetism in neural progenitors

    Ryota Nakazato, Noritaka Nakamichi, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   112   240P - 240P   2010

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  • Promotion by static magnetism of neuronal differentiation of neural progenitors

    R. Nakazato, N. Nakamichi, Y. Ishioka, T. Takarada, Y. Yoneda

    INTERNATIONAL JOURNAL OF NEUROPSYCHOPHARMACOLOGY   13   191 - 191   2010

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  • Translocation of glutamine transporter expressed in C6 glioma cells

    Aya Sako, Masato Ogura, Noritaka Nakamichi, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   112   140P - 140P   2010

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  • Adipocyte differentiation in GABA(B)R1 null-mice

    Yukari Nakamura, Takeshi Takarada, Eiichi Hinoi, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   112   162P - 162P   2010

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  • Induction of myosin VI after traumatic stress

    Y. Ito, K. Tamaki, T. Takarada, Y. Yoneda

    INTERNATIONAL JOURNAL OF NEUROPSYCHOPHARMACOLOGY   13   209 - 210   2010

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  • Properties of neural progenitors isolated from brains of embryonic NR1-null mice

    Juliet Makanga, Kyosuke Uno, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   112   182P - 182P   2010

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  • Responsiveness glia-derived neurotrophic factor to nicotine in cultured rat cortical astrocytes

    H. Kawagoe, M. Ogura, N. Nakamichi, T. Takarada, Y. Yonedas

    INTERNATIONAL JOURNAL OF NEUROPSYCHOPHARMACOLOGY   13   188 - 188   2010

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  • Protection by ATP from NMDA neurotoxicity

    Saya Takada, Noritaka Nakamichi, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   112   240P - 240P   2010

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  • Ifrd1 is predominantly expressed by adult mouse hippocampal progenitors

    S. Konishi, T. Takarada, N. Nakamichi, Y. Yoneda

    INTERNATIONAL JOURNAL OF NEUROPSYCHOPHARMACOLOGY   13   189 - 189   2010

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  • Responsiveness of cellular motor protein myosin 6 to PTSD

    Yuma Ito, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   112   180P - 180P   2010

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  • Protection by notoginsenoside R1 against glutamate neurotoxicity

    Hiroyuki Fujita, Noritaka Nakamichi, Yuki Kambe, Ryo Fukumori, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   112   240P - 240P   2010

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  • Modulation by GABABR1 subunit of cellular differentiation in chondrocytes

    Yoshifumi Takahata, Takeshi Takarada, Eiichi Hinoi, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   112   159P - 159P   2010

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  • Distribution profiles of the osteoblastogenesis master regulator Runx2 in the brain

    Masaki Tachibana, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   112   93P - 93P   2010

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  • Functional modulation by GABA(B) receptor of neural stem cells

    Shusuke Ozawa, Takeshi Takarada, Masaki Fukui, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   112   70P - 70P   2010

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  • Adult neurogenesis impairment in posttraumatic stress disorder

    Takeshi Takarada, Yuma Ito, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   112   29P - 29P   2010

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  • Protection by ATP against NMDA neurotoxicity in cultured rat hippocampal neurons

    S. Takada, S. Kato, Y. Kambe, N. Nakamichi, T. Takarada, Y. Yoneda

    INTERNATIONAL JOURNAL OF NEUROPSYCHOPHARMACOLOGY   13   194 - 194   2010

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  • Possible modulation by biological clock of chondrogenesis

    Ayumi Kodama, Takeshi Takarada, Eiichi Hinoi, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   112   160P - 160P   2010

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  • Acquired NMDA channels artificially expressed in HEK293 cells

    R. Fukumori, N. Nakamichi, Y. Kambe, T. Takarada, Y. Yoneda

    INTERNATIONAL JOURNAL OF NEUROPSYCHOPHARMACOLOGY   13   185 - 185   2010

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  • Modulation by Ifrd1 as a novel differentiation regulator in neural progenitors

    Takeshi Takarada, Shiho Konishi, Yukio Yoneda

    NEUROSCIENCE RESEARCH   68   E357 - E357   2010

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    DOI: 10.1016/j.neures.2010.07.1584

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  • MYOSIN VI EXPRESSION IN RESPONSE TO TRAUMATIC STRESS IN MURINE HIPPOCAMPUS

    M. Tachibana, Y. Ito, K. Tamaki, T. Takarada, N. Nakamichi, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   110   30 - 30   2009.9

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  • BONE-RELATED GENES EXPRESSED IN THE BRAIN

    T. Takarada, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   110   111 - 111   2009.9

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  • SUPPRESSION BY MYOSIN VI OF NEURAL PROGENITOR PROLIFERATION

    Y. Ito, K. Tamaki, T. Takarada, N. Nakamichi, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   110   25 - 25   2009.9

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  • NEUROPROTECTION BY ATP AGAINST NMDA TOXICITY

    A. Kodama, S. Kato, Y. Kambe, N. Nakamichi, T. Takarada, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   110   52 - 52   2009.9

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  • PROMOTION OF ASTROGLIAL DIFFERENTIATION BY GROUP III METABOTROPIC GLUTAMATE RECEPTORS IN MURINE NEURAL PROGENITOR CELLS

    J. O. Makanga, K. Yoshida, M. Fukui, N. Nakamichi, T. Takarada, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   110   27 - 28   2009.9

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  • FUNCTIONAL NMDA RECEPTOR EXPRESSION BY UNDIFFERENTIATED NEURAL PROGENITORS

    K. Uno, T. Takarada, N. Nakamichi, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   110   130 - 131   2009.9

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  • IRON-RELATED GENES EXPRESSED IN BRAIN

    Y. Nakamura, N. Nakamichi, T. Takarada, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   110   62 - 63   2009.9

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  • MITOCHONDRIAL CALCIUM IN NMDA NEUROTOXICITY

    Y. Takahata, Y. Kambe, N. Nakamichi, T. Takarada, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   110   130 - 130   2009.9

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  • PROPERTIES OF ACQUIRED NMDA CHANNELS IN HEK293 CELLS

    R. Fukumori, N. Nakamichi, Y. Kambe, H. Taniura, T. Takarada, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   110   128 - 128   2009.9

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  • TRANSACTIVATION OF GLIA-DERIVED NEUROTROPHIC FACTOR BY NICOTINE IN CULTURED RAT CORTICAL ASTROCYTES

    H. Kawagoe, M. Ogura, N. Nakamichi, T. Takarada, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   110   103 - 103   2009.9

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  • GLUTAMINE TRANSPORTER EXPRESSED BY GLIAL CELLS IN GLUTAMATE NEUROTOXICITY

    M. Iemata, M. Ogura, H. Taniura, N. Nakamichi, T. Takarada, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   110   102 - 102   2009.9

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  • MODULATION OF PROLIFERATION AND DIFFERENTIATION BY GABAERGIC SIGNALING IN MURINE NEURAL PROGENITOR CELLS

    S. Ozawa, M. Fukui, T. Takarada, H. Taniura, N. Nakamichi, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   110   123 - 123   2009.9

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  • PREDOMINANT EXPRESSION OF IFRD1 BY NEURAL PROGENITOR CELLS IN ADULT MOUSE HIPPOCAMPUS

    S. Konishi, S. Maeda, M. Watanabe, N. Nakamichi, T. Takarada, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   110   27 - 27   2009.9

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  • PROMOTION OF NEURONAL DIFFERENTIATION OF NEURAL PROGENITOR CELLS CULTURED UNDER STATIC MAGNETISM

    E. Nakatani, N. Nakamichi, Y. Ishioka, T. Takarada, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   110   28 - 28   2009.9

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  • MITOCHONDRIAL MEMBRANE POTENTIAL DISRUPTION IN NMDA NEUROTOXICITY

    K. C. Hamamichi, Y. Kambe, N. Nakamichi, T. Takarada, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   110   268 - 268   2009.9

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  • CLOCK GENES EXPRESSED IN CULTURED MICROGLIA

    T. Yamamoto, T. Takarada, A. Kodama, M. Tachibana, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   110   111 - 111   2009.9

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  • GABABR molecule modulates cellular maturation in osteoblasts

    Yoshifumi Takahata, Takeshi Takarada, Kyosuke Uno, Sayumi Fujimori, Eiichi Hinoi, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   109   146P - 146P   2009

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  • Regulation by glutamate of cell differentiation through modulation of intracellular glutathione contents in mesenchymal stem cells

    Mika Lemata, Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   109   177P - 177P   2009

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  • Establishment of osteoblastic MC3T3-E1 cells stably transfected with cystine/glutamate antiporter

    Kyosuke Uno, Takeshi Takarada, Keita Hamamichi, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   109   176P - 176P   2009

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  • Functional expression of runt related factor-2 in astrocytes

    Takeshi Takarada, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   109   64P - 64P   2009

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  • 時計遺伝子Bmal1による破骨細胞の分化制御

    山田大祐, 児玉歩美, 宝田剛志, 米田幸雄

    日本骨代謝学会学術集会プログラム抄録集   27th   2009

  • Inhibition by the green tea ingredient theanine of [3H] glutamine accumulation in neurons and astroglia in rat brain

    T. Yamamoto, T. Kakuda, A. Abe, A. Nozawa, M. Ogura, T. Takarada, E. Hinoi, Y. Yoneda

    INTERNATIONAL JOURNAL OF NEUROPSYCHOPHARMACOLOGY   11   213 - 214   2008.7

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  • Transient expression of functional NMDA receptors by undifferentiated neural progenitor cells

    K. Uno, M. Yoneyama, T. Takarada, H. Taniura, N. Nakamichi, Y. Yoneda

    INTERNATIONAL JOURNAL OF NEUROPSYCHOPHARMACOLOGY   11   218 - 218   2008.7

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  • Modulation of proliferation and differentiation by GABAergic signals in murine neural progenitor cells

    Y. Takahata, M. Fukui, S. Ozawa, T. Takarada, H. Taniura, N. Nakamichi, Y. Yoneda

    INTERNATIONAL JOURNAL OF NEUROPSYCHOPHARMACOLOGY   11   217 - 217   2008.7

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  • Expression of different glutamate receptors in brains of rats with middle cerebral artery occlusion

    S. Kurokawa, T. Hara, T. Takarada, N. Nakamichi, Y. Yoneda

    INTERNATIONAL JOURNAL OF NEUROPSYCHOPHARMACOLOGY   11   210 - 210   2008.7

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  • Inhibition of osteoblastic proliferation by cystine/glutamate antiporter

    Kyosuke Uno, Takeshi Takarada, Eiichi Hinoi, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   106   157P - 157P   2008

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  • Promotion of chondrogenic differentiation by FK506 in pre-chondrogenic ATDC5 cells

    Yukari Nakamura, Yukio Yoneda, Takeshi Takarada

    JOURNAL OF PHARMACOLOGICAL SCIENCES   106   156P - 156P   2008

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  • Functional expression of cystine/glutamate antiporter in mesenchymal stem cell line C31-10T1/2 cells

    Mika Iemata, Takeshi Takarada, Eiichi Hinoi, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   106   156P - 156P   2008

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  • Action of the green tea ingredient theanine on glutamine transport activity

    27 ( 5 )   320 - 320   2007.11

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  • Inhibition of osteoclastic differentiation by cystine/glutamate antiporter

    Kyosuke Uno, Takeshi Takarada, Eiichi Hinoi, Yukio Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   103   254P - 254P   2007

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  • Glutamatergic signaling system in bone

    Yukio Yoneda, Eiichi Hinoi, Takeshi Takarada

    JOURNAL OF PHARMACOLOGICAL SCIENCES   103   26P - 26P   2007

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  • Inhibitory effect of D-serine on chondrogenic differentiation

    Journal of the Pharmaceutical Society of Japan   126   175 - 177   2006.9

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  • Phenolic antidiarrheic ingredients protect against cell death by hydrogen peroxide in cultured rat neocortical astrocytes

    N. Matsushima, N. Moriguchi, H. Shibata, T. Takarada, K. Takano, Y. Kambe, Nakamichi, V, Y. Yoneda

    JOURNAL OF NEUROCHEMISTRY   98   23 - 23   2006.7

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  • Protection by antidiarrheic ingredients against cell death in cultured astrocytes

    N Matsushima, T Takarada, K Takano, Y Kambe, Y Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   100   201P - 201P   2006

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  • Protection by antidiarrheics against cell death in cultured astroglia

    MATSUSHIMA Nobuyuki, SHIBATA Hitoshi, TAKANO Katsura, TAKARADA Takeshi, YONEDA Yukio

    25 ( 6 )   334 - 334   2005.12

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  • Expression of N-terminal asparagines amidase 1 by static magnetism

    TAKARADA Takeshi, TANIURA Hideo, GOTO Yasuaki, YAMADA Kiyofumi, YONEDA Yukio

    25 ( 6 )   329 - 329   2005.12

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  • Daily exposure to static magnetism is protective against sustained blockade of NMDA receptor channels in rat hippocampal neurons

    T Takarada, T Hirai, H Taniura, Y Yoneda

    JOURNAL OF NEUROCHEMISTRY   94   60 - 60   2005.8

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  • Expression of serine racemase in cultured rat costal chondrocytes

    T Takarada, E Hinoi, Y Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   97   179P - 179P   2005

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  • 骨関節系細胞の分化過程におけるD-セリンの生理学的役割

    宝田 剛志, 檜井 栄一, 米田 幸雄

    日本薬理学雑誌 : FOLIA PHARMACOLOGICA JAPONICA   124   57P - 58P   2004.11

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  • グルタミン酸による軟骨組織の分化制御機構

    檜井 栄一, 王 麗楊, 宝田 剛志, 米田 幸雄

    日本薬理学雑誌 : FOLIA PHARMACOLOGICA JAPONICA   124   55P - 56P   2004.11

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  • Inhibition of cartilage mineralization by glutamate

    LY Wang, E Hinoi, T Takarada, M Osawa, Y Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   94   184P - 184P   2004

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  • Transcriptional regulation of clock genes in cultured chondrogenic ATDC5 cells

    T Ueshima, E Hinoi, T Takarada, Y Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   94   183P - 183P   2004

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  • Promotion by D-serine of osteoclastic differentiation in murine pre-osteoclast cell line RAW264.7

    T Takarada, M Osawa, E Hinoi, Y Yoneda

    JOURNAL OF PHARMACOLOGICAL SCIENCES   94   186P - 186P   2004

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  • Functional expression of particular glutamate transporters in rat testis

    T Takarada, E Hinoi, A Takamoto, VJ Balcar, H Taniura, Y Yoneda

    JOURNAL OF NEUROCHEMISTRY   87   80 - 80   2003.12

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  • Search for glutamate transporters preferring L-aspartate to D-aspartate

    TAKAMOTO Akiko, TAKARADA Takeshi, YONEDA Yukio

    22 ( 6 )   357 - 357   2002.12

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Presentations

  • iPS細胞によるヒト四肢骨格発生過程の模倣と、再生医療への応用

    宝田剛志

    日本口腔インプラント学会 第45回 中国・四国支部学術大会  2025.12.13 

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  • Modeling human limb skeletal development using human pluripotent stem cells Invited

    Takeshi Takarada

    Japan-Sweden Mini-symposium From embryonic development to skeletal reconstruction  2025.1.22 

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  • 四肢ヒト化マウスの開発によるがん研究のイノベーション

    宝田剛志

    JST創発融合の場  2024.12.13 

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  • iPS細胞技術を利用したヒト四肢骨格発生過程の模倣と、再生医療への応用 Invited

    宝田剛志

    第43回日本運動器移植・再生医学研究会  2024.11.30 

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    Presentation type:Oral presentation (keynote)  

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  • ヒトiPS細胞由来肉腫モデルを利用した新規治療標的分子の同定

    宝田剛志

    愛媛大学プロテオインタラクトーム解析拠点(PRiME)共同研究発表会  2024.11.14 

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  • ヒトiPS細胞由来肢芽間葉系細胞を利用した軟骨再生研究 Invited

    宝田剛志

    第39回 日本整形外科基礎学会  2024.10.17 

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  • iPS細胞でヒト骨格発生を再現する

    宝田剛志

    予防薬理学研究所学術集会  2024.9.7 

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  • 四肢ヒト化マウスの開発によるがん研究のイノベーション

    宝田剛志

    JST創発「ライフの狭間」  2024.7.20 

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    Presentation type:Oral presentation (general)  

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  • 四肢ヒト化マウスの開発によるがん研究のイノベーション

    宝田剛志

    JST創発融合の場  2024.7.4 

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  • 細胞でヒト骨格発生を再現し、ヒト運動器の進化を考える Invited

    宝田剛志

    第42回日本骨代謝学会学術集会  2024.6.29 

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  • iPS細胞を利用したヒト四肢骨格発生過程の模倣と、医療への応用 Invited

    宝田剛志

    第 54 回長崎障害者支援再生医療研究会  2024.6.18 

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  • iPS細胞技術を利用したヒト四肢骨格発生過程の模倣と再生医療への応用 Invited

    宝田剛志

    発生・発達・成長期医療グループセミナー  2024.5.23 

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    Presentation type:Oral presentation (invited, special)  

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  • Understanding human limb development using iPSCs, and applications in regenerative medicine Invited

    Takeshi Takarada

    Japan-Sweden Workshop on Cartilage, Bone and Bone marrow  2024.3.25 

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  • ヒトiPS細胞からの肢芽間葉系細胞の誘導と、再生治療への応用 Invited

    宝田剛志

    第23回日本再生医療学会  2024.3.22 

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  • iPS細胞技術を利用したヒト四肢骨格発生過程の理解と、再生医療への応用 Invited

    宝田剛志

    第95回日本組織培養学会  2023.8.31 

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  • 四肢骨格の発生過程を利用したヒト軟骨再生研究 Invited

    宝田剛志

    第96回日本整形外科学会学術総会  2023.5.14 

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  • ヒト多能性幹細胞からの肢芽間葉系細胞の誘導と、再生医療研究への応用 Invited

    宝田剛志

    第22回日本再生医療学会総会  2023.3.23 

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Industrial property rights

  • ヒト永久軟骨前駆細胞及びその調整方法、移植材料及び軟骨疾患治療用組成物

    宝田剛志, 髙尾知佳

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    Applicant:国立大学法人岡山大学

    Application no:特願2024-230396  Date applied:2024.12.26

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  • 移植軟骨組織の内軟骨性骨化抑制方法

    宝田剛志, 木股敬裕, 北口陽平, 太田智之, 髙尾知佳

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    Application no:特願2022-158123  Date applied:2022.9.30

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Awards

  • とやま賞

    2016.5   富山県ひとづくり財団  

    宝田剛志

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  • 日本薬理学会学術奨励賞

    2014.3   日本薬理学会  

    宝田剛志

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  • The Pharmaceutical Society of Japan Award for Young Scientists

    2013   The Pharmaceutical Society of Japan  

    Takeshi Takarada

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  • Young Investigator Fellowship Award

    2011   Asian College of Neuropsychopharmacology (AsCNP)  

    Takeshi Takarada

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  • 日本薬学会北陸支部学術奨励賞

    2011   日本薬学会  

    宝田剛志

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  • 第29回内藤コンファレンス『グリアワールドから見た脳』ポスターアワード

    2010   内藤財団  

    宝田剛志

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  • The 22nd Biennial Meeting of the ISN/APSN Joint Meeting, Best APSN Poster Presentation, GOLD AWARD

    2010  

    Takeshi Takarada

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Research Projects

  • 関節鏡下で使用できる塗布型軟骨再生医療等製品「Chondro-paste」の国際展開に向けた研究開発

    2025.12 - 2028.12

    国立研究開発法人科学技術振興機構(JST)  Peace&Science Innovation Ecosystem(PSI)(ステップ2) 

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    Authorship:Principal investigator 

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  • 炎症・代謝・エピゲノム連環による肺癌発症機構の解明と予防への応用

    2025.04 - 2028.03

    日本医療研究開発機構(AMED)  革新的がん医療実用化研究事業公募(1-1)がん予防の実現に資する基盤的研究と標的妥当性の検証 

    冨樫庸介, 宝田剛志

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    Authorship:Coinvestigator(s) 

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  • ヒト肉腫オルガノイドを利用した薬剤スクリーニング技術の開発

    Grant number:25K02423  2025.04 - 2028.03

    日本学術振興会  科学研究費助成事業  基盤研究(B)

    宝田 剛志, 戸口田 淳也, 山中 聡士

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    Grant amount:\18850000 ( Direct expense: \14500000 、 Indirect expense:\4350000 )

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  • ヒト骨格アセンブロイドを利用した骨格形成過程の4Dバイオイメージング

    Grant number:24KK0206  2024.09 - 2027.03

    日本学術振興会  科学研究費助成事業  国際共同研究加速基金(海外連携研究)

    宝田 剛志, 高尾 知佳, 大曽根 達則, 細野 祥之

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    Grant amount:\20930000 ( Direct expense: \16100000 、 Indirect expense:\4830000 )

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  • ヒトiPS細胞技術を利用したヒト肉腫オルガノイドパネルの開発

    Grant number:24K22380  2024.06 - 2027.03

    日本学術振興会  科学研究費助成事業  挑戦的研究(萌芽)

    宝田 剛志, 中田 英二, 戸口田 淳也, 尾崎 敏文

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    Grant amount:\6500000 ( Direct expense: \5000000 、 Indirect expense:\1500000 )

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  • 難病における病的バリアントに特有な疾患進行メカニズムの解明

    Grant number:24K10453  2024.04 - 2027.03

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    濱田 全紀, 中田 英二, 宝田 剛志, 尾崎 敏文, 山田 大祐

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    Grant amount:\4680000 ( Direct expense: \3600000 、 Indirect expense:\1080000 )

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  • 培養軟骨組織体における内軟骨性骨化抑制へのアプローチとメカニズムの解明

    Grant number:24K12826  2024.04 - 2027.03

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    北口 陽平, 宝田 剛志, 太田 智之

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    Grant amount:\4680000 ( Direct expense: \3600000 、 Indirect expense:\1080000 )

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  • 軟骨再生による変形性足関節症に対する新規治療の開発

    Grant number:24K12374  2024.04 - 2027.03

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    雑賀 建多, 中田 英二, 宝田 剛志, 尾崎 敏文, 高尾 知佳

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    Grant amount:\4680000 ( Direct expense: \3600000 、 Indirect expense:\1080000 )

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  • 巨大骨欠損に対する新規治療の開発

    Grant number:24K12332  2024.04 - 2027.03

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    横山 裕介, 中田 英二, 宝田 剛志, 尾崎 敏文, 高尾 知佳

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    Grant amount:\4680000 ( Direct expense: \3600000 、 Indirect expense:\1080000 )

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  • ヒトiPS細胞とバイオマテリアルを用いたChondro-pasteの開発

    Grant number:24K12308  2024.04 - 2027.03

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    井上 智博, 中田 英二, 宝田 剛志, 尾崎 敏文, 高尾 知佳

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    Grant amount:\4550000 ( Direct expense: \3500000 、 Indirect expense:\1050000 )

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  • The lncRNA landscape of skeletal muscle cell biotransformation with aging.

    Grant number:23K27845  2024.04 - 2026.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    伊藤 達男, 武井 直子, 浜田 道昭, 宝田 剛志, 山崎 晃, 清水 由梨香

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    Grant amount:\10400000 ( Direct expense: \8000000 、 Indirect expense:\2400000 )

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  • Development of new treatment for cartilage regeneration for hip osteoarthritis

    Grant number:23K08590  2023.04 - 2026.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    山田 和希, 中田 英二, 宝田 剛志, 尾崎 敏文, 高尾 知佳, 山田 大祐

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    Grant amount:\4680000 ( Direct expense: \3600000 、 Indirect expense:\1080000 )

    本研究ではiPS細胞と3Dバイオプリンターを用いてハイブリッドマテリアルを作成し、新規骨・関節再建法の開発を目的としている。ハイブリッドマテリアルは表層の軟骨層と深層のscaffoldからなる二層の構造物である。岡山大学整形外科と組織機能修復学教室との合同研究で、表層の軟骨層はiPS細胞由来ヒト軟骨前駆細胞(Yamada D. Nature Biomedical Engineering, 2021)より作製した球状軟骨組織球やspheroid(細胞の凝集体)を想定している。深層のscaffoldはポリ乳酸やハイドロキシアパタイトの粉末を融解させ3Dバイオプリンターで印刷する。
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    ■表層の軟骨層に関して:我々のiPS細胞由来ヒト軟骨前駆細胞は様々な分化段階があり、軟骨組織に近い状態ほど移植後に軟骨組織へ分化する可能性が高い。そこでまずラットの軟骨細胞やspheroidを用いて移植を行った。欠損部にそのまま細胞を移植するだけでは細胞が脱落してしまうため、scaffoldとしてGelMAというゼラチンベースのマトリックス材料を用いた。GelMAは、特定波長の光を照射することにより硬化する特徴をもち、移植の際は任意のタイミングで硬化させることができる。ラットの大腿骨滑車部に1-3mmの軟骨欠損モデルを作成し、ラット軟骨細胞とGelMAからなる懸濁液を欠損部に移植し、生着および硝子軟骨への成熟を認めた。同様の実験を、iPS細胞由来ヒト軟骨前駆細胞でもおこない、軟骨への成熟度の高い細胞では細胞の生着を認めた。
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    ■深層のScaffold層について:ポリ乳酸粉末を3Dバイオプリンターにより200℃に熱して融解させ、3Dプリントすることで直径4mm大の円柱を作成することができた。これをゲッチンミニブタの大腿骨の膝関節面に移植し、2週の経過でゆるみなくとどまっていることが確認できた。

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  • Development of human-derived extracellular matrix product using scaffold-free tissue-engineered cartilage

    Grant number:23K09099  2023.04 - 2026.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    太田 智之, 宝田 剛志, 高尾 知佳

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    Grant amount:\4680000 ( Direct expense: \3600000 、 Indirect expense:\1080000 )

    本研究ではiPS細胞に由来する軟骨前駆細胞を用いて作製した培養軟骨に対し、脱細胞化もしくは細胞不活性化処理を行いヒト由来の細胞外マトリックス製剤を作製し移植素材としての応用可能性を検討することを目的としている。培養軟骨の創出に関してはiPS細胞より安定して軟骨前駆細胞を大量に調整する技術を確立しており、これに自己凝集化技術を用いることで数mm~数cm程度のリング形状の軟骨様組織を作成する技術を開発した。R5年度では細胞不活性化処理の予備的検討としてげっ歯類動物(マウスおよびラット)の肋軟骨に対してグルタールアルデヒドを用いた処理(GA処理)を行い、これをマウスの背部皮下に移植し検討を行った。GA処理ではサンプルを0.6%のGAに1日間浸漬し、その後0.2%のGAで1週間保管した後、80% EtOHで1日振盪し生理食塩水に1日浸漬した。同種無処理移植、同種GA処理移植、異種無処理移植、異種GA処理移植のサンプルを作成し、移植4か月後に組織を採取し標本をHE染色およびサフラニンO染色、コッサ染色を行った。HE染色、サフラニンO染色においてはいずれのサンプルにおいても移植軟骨の高度な吸収は認めなかったが異種無処理移植では軟骨膜の構造は破壊されていた。GA処理を行った2サンプルにおいて移植組織の組織構造は保たれていた。コッサ染色ではいずれのサンプルでも移植組織の石灰化は認めなかった。前述のGA処理法により移植後も軟骨の形態は安定的で、石灰化も惹起しないことが確認された。

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  • ヒトiPS細胞由来肢芽間葉系細胞による変形性関節症の遺伝・環境複合素因に関する研究

    Grant number:23K08677  2023.04 - 2026.03

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    高尾 知佳, 中田 英二, 宝田 剛志, 戸口田 淳也, 尾崎 敏文

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    Grant amount:\4680000 ( Direct expense: \3600000 、 Indirect expense:\1080000 )

    変形性関節症(Osteoarthritis, OA)患者のゲノムワイド関連解析により、疾患と関連する一塩基多型(Single nucleotide polymorphism; SNP)が数多く同定されたが、疾患発生機序の解明や薬剤開発はほとんど進んでいない。OAは、SNPのような遺伝要因だけでなく、炎症や力学的負荷等による環境要因が絡み合う複合的な多因子疾患であることが知られており、この複雑さが、治療薬開発を遅延させている。この現状を解決するには、これらの複合要因を模倣できるヒト関節軟骨モデルの開発が必須である。
    そのモデルを開発するためには同じ環境下で同一個体内でのSNP変異による軟骨形成能の違い、炎症への反応性の違いなどを検証する必要がある。
    今年度はCRISPR/CAS9システムを用いて各種感受性遺伝子SNPs (GDF5,rs143383(T/C))を各々iPS細胞へ導入し、各SNPが導入できているかをSequence解析により確認することを行っていたが、良い株が現状まだ得られていない。代替案として正常のiPS細胞株のGDF5,rs143383(T/C)のシークエンスを行い、すでに変異を持っている株の同定を行った(T/T,T/C, C/C)。これらのヒトiPS細胞からLBM及びExpLBM細胞を誘導し、ExpLBM細胞の評価を申請者らが報告した評価法である、Flow cytometry解析(ExpLBM;CD140b, CD90陽性, CD82弱陽性)で評価し、問題なくExpLBM細胞を誘導できている。
    これらのExpLBM細胞を用いて、現在3次元関節軟骨様組織体を作製し、Realtime-qPCR法による発現解析(COL2,COL1,SOX9, PRG4, ACAN等)、組織学的評価(HE染色、SafraninO染色等)、免疫組織学的評価(COL2,COL1,SOX9, PRG4, ACAN等)を施行している。

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  • Ritscher-Schinzel 症候群の病態解明と治療法開発:膜蛋白リサイクル機構の破綻による疾患メカニズムの統合的理解

    2023.04 - 2026.03

    日本医療研究開発機構(AMED)  難治性疾患実用化研究事業 

    斎藤伸治、宝田剛志

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  • 神経線維腫症1型患者のNF1遺伝子変異に基づく病態解明と個別化医療を目的とした疾患特異的iPS細胞の樹立

    2023.04 - 2025.03

    日本医療研究開発機構(AMED)  再生・細胞医療・遺伝子治療実現加速化プログラム(疾患特異的iPS細胞を用いた病態解明・創薬研究課題 

    中田英二、宝田剛志

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  • 四肢ヒト化マウスの開発によるがん研究のイノベーション

    2023 - 2029

    科学技術振興機構  戦略的な研究開発の推進 創発的研究支援事業 

    宝田 剛志

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    Authorship:Principal investigator 

    私は、「ヒト多能性幹細胞」×「がん研究(肉腫)」×「生殖工学(胚盤胞補完法)」といった、全く別々の分野の取り組みを融合させ、四肢ヒト化マウスを作製し、移植によらない同所性のヒト肉腫モデルを開発します。肉腫の起源が十分に解明されていないばかりか、マウス・ヒトのキメラ動物の作製成功例はなく、極めて挑戦性が高いが、これが成功すれば、臓器別ヒト化マウスによる同所性ヒトがんモデルの開発につながることが期待されます。

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  • Spatiotemporal T-cell differentiation dynamics in the tumor "peripheral" environment

    Grant number:22K19459  2022.06 - 2024.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Research (Exploratory)  Grant-in-Aid for Challenging Research (Exploratory)

    Togashi Yosuke

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    Grant amount:\6500000 ( Direct expense: \5000000 、 Indirect expense:\1500000 )

    In previous studies, we found that anti-senescence molecules and mitochondria in the tumor "peripheral" environment could be related to antitumor immunity. In this study, we introduced the identified genes into T cells, clearly showing increased activation. In addition, T cells with mitochondrial abnormalities were senescent with metabolic abnormalities and impaired activation and memory formation. We attempted spatial gene regulation in immune cells using our original TRE-PA-Cre system, but many immune cells died after blue light irradiation, making it difficult to use this systme. In contrast, T cell-specific conditional knockout mice showed reduced anti-tumor immune response including durable response, suggesting the importance of these factors.

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  • Filamin A mediated epithelial-mesenchymal transition during embryonic palate development

    Grant number:22K10245  2022.04 - 2025.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    早野 暁, 宝田 剛志, 井澤 俊

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    Grant amount:\4160000 ( Direct expense: \3200000 、 Indirect expense:\960000 )

    本研究の目的である、口蓋突起癒合部におけるFilamin A (Flna)の発現が口蓋の発生に与える影響を調べるため、2023年度には主に以下の3項目の研究を実施した。
    ①遺伝子改変マウスの解析:昨年度に作成した、KRT14-CreマウスおよびFlna floxマウスを交配し、胎生13.5日および14.5日のKRT14-Cre, Flna floxマウスを解析した。口蓋組織の薄切切片を作成し、蛍光免疫染色法を用いてFLNA, E-cadherinおよびTGF-betaシグナリングの下流で発現するタンパクの産生を対照群と比較した。この研究を通して口蓋突起部上皮消失の重要な因子であるTGF-βとFlnaとの関係を検討した。
    ②上記の胎生13.5日および14.5日のKRT14-Cre, Flna floxマウスの口蓋組織を摘出後、器官培養を行い、メカニカルストレスがKRT14-Cre, Flna floxマウスおよび対照群の口蓋組織に与える影響を検討した。この研究を通して口蓋突起部上皮消失の重要な因子であるFlnaとメカニカルストレスとの関係を検討した。
    ③昨年度に引き続き、Nanostring社のGeoMXを用いた空間的トランスクリプトーム解析を行うための準備実験を行なった。胎生14.5日のKRT14-Cre, Flna floxマウスの口蓋組織のパラフィン薄切切片を作成し、GeoMXのコールドランを行い、パラフィン切片で作用する抗体の選出を行なった。
    さらに、これまでの結果を纏め、Developmental cell, Nature communications, EMBO, Journal of Clinical Investigationなど幾つかの発生学の雑誌に投稿したが、まだ論文受理には至っていない。

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  • Development of new molecular targeted therapy for osteosarcoma lung metastasis

    Grant number:22K09401  2022.04 - 2025.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    中田 英二, 宝田 剛志, 尾崎 敏文, 高尾 知佳, 山田 大祐

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    Grant amount:\4160000 ( Direct expense: \3200000 、 Indirect expense:\960000 )

    骨肉腫など、悪性骨・軟部腫瘍におけるPRRX1の役割を解明するため、腫瘍の悪性度とPRRX1の発現量の関連性を臨床的に評価し、in vitroにおける機能解析を行った。当院にて手術を行った悪性骨・軟部腫瘍の術後検体にPRRX1の免疫染色を行い、染色強度と染色陽性細胞数から高発現群と低発現群に群分けし、PRRX1の発現とその患者の5年累積生存率、再発・肺転移との関連を評価したところ、免疫染色において、高発現群は低発現群に比べ5年累積生存率が低く、転移率が高かった。in vitroでは、レンチウイルスベクターを用いてPRRX1に対するshRNA(shPRRX1)を複数の肉腫細胞株に導入した。またPiggybac systemを用いてPRRX1をドキシサイクリン依存的に過剰発現させるヒトMPNST細胞株を樹立した。対照群(空ベクター導入群)とshPRRX1導入群間、対照群(ドキシサイクリン未処理群)とPRRX1過剰発現群(ドキシサイクリン処理群)間で増殖能、遊走能、浸潤能を比較した。またshPRRX1導入群では増殖能、遊走能、浸潤能が低下し、PRRX1過剰発現群では増殖能に変化はないが、遊走能、浸潤能が増加していることが分かった。PRRX1を過剰発現やノックダウンした細胞とコントロールから遺伝子を抽出しRNA Sequencingで発現する遺伝子を比べた。コントロールに比べ発現が増加あるいは低下している遺伝子を検討し、PRRX1の発現上昇による肺転移のメカニズムの解明やPRRX1の下流シグナル経路を解析した。EMT のmolecular markers であるN-cadherin, E-cadherin や核内のβ-catenin とWnt/β-catenin のターゲットである c-Myc.のレベルが上昇していた。

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  • 新規肉腫モデルを用いた肉腫発生メカニズムの解明と治療標的分子同定の試み

    Grant number:22K09378  2022.04 - 2025.03

    日本学術振興会  科学研究費助成事業 基盤研究(C)  基盤研究(C)

    上原 健敬, 中田 英二, 宝田 剛志, 尾崎 敏文, 高尾 知佳, 山田 大祐

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    Grant amount:\4160000 ( Direct expense: \3200000 、 Indirect expense:\960000 )

    本研究はヒト肢芽間葉系細胞(Limb bud mesenchymal cells, LBM)、およびその分化系譜上の細胞に、人為的摂動(遺伝子変異、シグナル、細胞外環境)を加えることで、骨肉腫や軟骨肉腫などへの発がん過程(肉腫化)を再現することを当初の目的としている。
    TP53を欠損したヒトiPS細胞株414C2を作成し、PiggyBac Transposon Vector System を用いてこれらの融合遺伝子をドキシサイクリン誘導的に発現させる系を構築した。導入する発現遺伝子としては、ユーイング肉腫に特徴的な融合遺伝子であるEWS-FLI1および滑膜肉腫に特徴的な融合遺伝子であるSS18-SSX1を用いた。遺伝子導入にて作成したこれらの細胞株は我々の確立した方法により継続拡大培養が可能であり、expandable LBMへの誘導も可能であった。
    次いで、本細胞株を骨原基まで分化誘導させたのちに同組織としてを免疫不全マウスに移植したのち、ドキシサイクリンを投与した。移植組織体はEWS-FLI1の発現誘導によって腫瘍形成が確認された。これにより当初の目的の一つであった発がん過程(肉腫化)の一つの再現モデルとして確立できた。また、SS18-SSX1の発現系に関しても同様に処置を行った。移植後の組織体を免疫組織学的に解析した結果、融合遺伝子の発現系がサイレンシングによって不活化している可能性が見出された。

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  • 関節軟骨の光in vivoイメージング技術の開発

    Grant number:22K09332  2022.04 - 2025.03

    日本学術振興会  科学研究費助成事業 基盤研究(C)  基盤研究(C)

    鉄永 智紀, 中田 英二, 宝田 剛志, 尾崎 敏文, 高尾 知佳, 山田 大祐

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    Grant amount:\4160000 ( Direct expense: \3200000 、 Indirect expense:\960000 )

    変形性関節症(OA)の患者は痛みや可動域制限により日常生活動作が著しく低下する。OAに対する薬物療法は多く開発されているが、その有効性を検証するためには、OAモデル動物の確立が欠かせない。しかし、OAモデル動物での候補化合物の有効性を検証する手法では、組織学的解析に頼るところが大きく、切断面での傷害程度のばらつきや、実験者バイアスの問題が未解決である。これまでに関節軟骨表層に特異的に発現するPRG4(Proteoglycan4/Lubricin)遺伝子のExon1にLuciferase-P2A-tdTomatoをノックインすることで、PRG4発現を可視化するマウス(PRG4可視化マウス)の開発に成功した。2023年度は、2022年度に引き続きPRG4可視化マウスを用いてOAモデル(PRG4可視化OAモデルマウス)の作製を行った。2023年度は、PRG4可視化OAモデルを用いて、関節軟骨傷害の程度や候補化合物の有効性について同一個体で、経時的・連続的に数値化するシステム(関節の光in vivoイメージング)の開発を行っている。

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  • iPS細胞由来ヒト軟骨前駆細胞を使用した関節軟骨再生方法の開発

    2022.04 - 2024.03

    日本医療研究開発機構(AMED)  令和4年度 「橋渡し研究プログラム(PreF)」 

    宝田剛志

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  • Development of tooth regenerative technology based on the spatiotemporal transcriptome analysis and iPS interference

    Grant number:21H04842  2021.04 - 2025.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)  Grant-in-Aid for Scientific Research (A)

    窪木 拓男, 大野 充昭, 辻 孝, 渡辺 亮, 宝田 剛志

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    Grant amount:\42510000 ( Direct expense: \32700000 、 Indirect expense:\9810000 )

    本申請研究では,「臓器としての歯の再生」を最終目的に,1細胞レベルでのRNA発現解析に加えて,時空間情報を加味した遺伝子発現解析法を駆使し,歯胚発生における1細胞レベル時空間的トランスクリプトームMapを構築し,これらのデータベースをもとに,iPS干渉法を応用し,歯原性上皮・間葉細胞の誘導方法を開発する.そして,器官原基法により,非歯原性細胞から,生理的機能を有した臓器としての歯を世界で初めて再生することを目的としている.
    本年度は,歯胚発生における1細胞レベル時空間特異的トランスクリプトームMapを構築した.
    具体的には,マウスE10.5,E11.5,E12.5,E14.5,E18.5の歯胚および非歯原性口腔粘膜組織を摘出し,酵素処理にて約1万細胞の単一細胞を得て,Single cell RNA-Seq (scRNA-Seq)解析し,どの細胞が,どの遺伝子を,どの程度発現しているか1細胞レベルで解析を行った.また,メッシュ状に位置情報となるインデックス配列が付加されたスライドガラスに,E10.5,E11.5,E12.5,E14.5,E16.5の歯胚を含むマウス頭部前頭断の凍結切片を貼り付け,HE染色を行い,組織学的情報を取得した.次に,スライド上でmRNAを単離,位置情報のインデックス配列が付加されたcDNAを合成し,ライブラリー作製後にシークエンスを行い,インデックス情報から,二次元空間での遺伝子発現情報を構築し,遺伝子発現Mapを構築した.

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  • ヒト関節軟骨オルガノイドを利用した革新的創薬スクリーニング技術の開発

    Grant number:21H02643  2021.04 - 2025.03

    日本学術振興会  科学研究費助成事業 基盤研究(B)  基盤研究(B)

    宝田 剛志, 高尾 知佳, 山田 大祐, 戸口田 淳也

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    Grant amount:\17160000 ( Direct expense: \13200000 、 Indirect expense:\3960000 )

    高齢化が急速に進行する中で、膝関節軟骨の代表的疾患である変形性関節症(Osteoarthritis, OA)に対する薬物治療開発は遅々として進んでいない。ヒト生体環境/病態を模倣したハイスループット化合物スクリーニングシステムの開発は、薬剤開発の初期段階に極めて重要であるが、ヒト関節軟骨組織(硝子軟骨組織)を均一大量に調整することは従来不可能であった。申請者は、ヒト多能性幹細胞より、高い軟骨分化指向性を有し、拡大培養可能で、前向き品質管理が可能なヒト軟骨前駆細胞を大量に調整する技術を開発することに成功し、「ヒト」の硝子軟骨組織(=ヒト関節軟骨オルガノイド)を「均一・大量」に、安定的に調整する準備が整った。本研究では、開発したヒト軟骨前駆細胞を細胞源とし、均一大量に作製したOA病態ヒト関節軟骨オルガノイドによるハイスループット化合物スクリーニング系を開発することで、OA治療候補化合物を同定し、独自に開発する疾患モデル動物での治療効果を検証することを目指す。この点において本年度は、ヒト多能性幹細胞株にpiggybacでのDOX inducible RUNX2発現カセットを導入し (hPSC-iRUNX2株の樹立)、同株より申請者らの開発した方法を使用して、ヒト軟骨前駆細胞(hCPC-iRUNX2)を樹立し、継代培養により増やした。DOXを添加することでRUNX2の発現が認められ系の確立に成功した。

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  • ヒト関節軟骨オルガノイドを利用した革新的創薬スクリーニング技術の開発

    Grant number:23K21368  2021.04 - 2025.03

    日本学術振興会  科学研究費助成事業  基盤研究(B)

    宝田 剛志, 戸口田 淳也, 高尾 知佳, 山田 大祐

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    Grant amount:\17160000 ( Direct expense: \13200000 、 Indirect expense:\3960000 )

    本研究では、開発したヒト軟骨前駆細胞を細胞源とし、均一大量に作製したOA病態ヒト関節軟骨オルガノイドによるハイスループット化合物スクリーニング系を開発することで、OA治療候補化合物を同定し、独自に開発する疾患モデル動物での治療効果を検証することを目指す。この点において昨年度までに、OA病態を模倣するDOX誘導性の病態模倣軟骨オルガノイドを作製することに成功した。これを受けて本年度は、大量に軟骨オルガノイドを作製する方法論の開発を行った。細胞培養液の入った攪拌型バイオリアクター内にヒトiPS細胞由来のExpLBM細胞を播種し、細胞凝集塊を作製した。続いて培地を軟骨分化誘導培地に交換し、培養することで大量の球状培養組織を得た。これらの組織はサフラニンO染色やトルイジンブルー染色陽性であり、硝子軟骨様であった。さらにRT-qPCR解析により軟骨マーカーであるCOL2A1やACANが有意に上昇しており、免疫染色においてもこれらの軟骨マーカーは陽性の所見を示した。作製できた軟骨組織体を免疫不全ラットの膝関節欠損モデルに移植すると、ヒト特異的ビメンチン陽性で示唆されるように、ヒト移植片の膝関節軟骨への生着を確認することが出来た。本法では研究用のiPS細胞株である414C2株だけでなく、臨床応用可能なHLAホモドナーのiPS細胞株のFf-I 14s04株においても同様の結果を示すことができた。

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  • Study on novel biomarkers using human pluripotent stem cell derived sarcoma model

    Grant number:21K07192  2021.04 - 2024.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    Yamada Dasiuke

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    Grant amount:\4290000 ( Direct expense: \3300000 、 Indirect expense:\990000 )

    Although previous studies using mouse sarcoma models have shown that limb bud mesenchymal cell lineage cells are the origin of Ewing's sarcoma (EwS), no EwS models using human limb bud mesenchymal cells has been established. In this study, to elucidate the pathogenesis and malignant transformation mechanism of EwS, we established a novel sarcoma model using human pluripotent stem cell (hPSC) derived expandable limb bud-like mesenchymal cells (ExpLBM). When the expression of EWS/FLI1 was induced in ExpLBM-derived bone primordia, tumor that could be stained with EwS markers developed, indicating that a novel hPSC-derived EwS model has been established.

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  • 悪性軟部腫瘍におけるPRRX1の機能解析とその新規薬物療法への応用

    Grant number:21K07178  2021.04 - 2024.03

    日本学術振興会  科学研究費助成事業 基盤研究(C)  基盤研究(C)

    たき平 将太, 中田 英二, 宝田 剛志, 尾崎 敏文, 山田 大祐

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    Grant amount:\4030000 ( Direct expense: \3100000 、 Indirect expense:\930000 )

    我々は転写制御因子Paired related homeobox 1(PRRX1)について研究を行ってきた。PRRX1は四肢骨格形成に強く関与しているが、腫瘍の悪性化に関与するとの報告がある。オープンデータベースの解析にて悪性軟部腫瘍の1つである悪性末梢神経鞘腫(MPNST)においてPRRX1が比較的高発現していることを見出した。ヒト腫瘍検体においてPRRX1の発現の多寡を免疫染色にて確認し高発現/低発現と群分けし予後と肺転移について相関を評価したところ、高発現グループにおいて5年生存率は低く、転移率も高い結果となった。次にレンチウイルスベクターを用いてPRRX1に対するshRNA(shPRRX1)をヒトMPNST細胞株に導入、PRRX1の発現を抑制した細胞株を作製し、対照群(空ベクター導入群)とshPRRX1導入群間で増殖能、遊走能、浸潤能を検討したところ、増殖能・遊走能・浸潤能いずれも低下する結果となった。次にPiggybac systemを用いてPRRX1をドキシサイクリン依存的に過剰発現させるヒトMPNST細胞株を樹立した。対照群(ドキシサイクリン未処理群)とPRRX1過剰発現群(ドキシサイクリン処理群)間で増殖能、遊走能、浸潤能を検討したところ、PRRX1過剰発現群では増殖能に変化はなく、遊走能、浸潤能は増加していた。次に、PRRX1の発現を抑制した細胞株と対照群、それぞれの細胞株をマウスに皮下移植を行ったところshPRRX1導入群では腫瘍径は有意に縮小していた。本研究によりPRRX1は腫瘍悪性化の原因の可能性が示唆され、その働きを阻害する薬剤を見いだすことで、本来治療が困難なことが多いとされる軟部肉腫に対する新規治療法となり得る可能性が考えられた。本研究では悪性腫瘍のメカニズムの一端を解明しうるだけでなく、新規創薬開発の点においても非常に重要性が高いと考える。

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  • in vivo genome engineering by tTA-dependent photoactivatable Cre recombinase knock-in mouse

    Grant number:20K21373  2020.07 - 2023.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Research (Exploratory)

    TAKARADA TAKESHI

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    Grant amount:\6370000 ( Direct expense: \4900000 、 Indirect expense:\1470000 )

    We have successfully generated mice that are capable of blue light/cell type-specific DNA recombination reactions in vivo (TRE-PA-Cre mice). In this study, we prepared M2-rtTA, Foxp3-tTA, and LepR-tTA mice and crossed them with TRE-PA-Cre;LSLtdTomato mice to create each cell type-specific PA-Cre mouse. M2-rtTA;TRE-PA-Cre;LSL-tdTomato mice treated with doxycycline in drinking water were irradiated with a blue light hand-type laser in each tissue to confirm the expression of tdTomato, and irradiation-dependent DNA recombination was successfully observed in the tongue and skin.

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  • 自己凝集化技術によるヒトiPS/ES細胞からの立体軟骨組織の創出

    2020.04 - 2022.03

    日本医療研究開発機構(AMED)  再生医療実現拠点ネットワークプログラム(技術開発個別課題) 

    宝田剛志

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    Authorship:Principal investigator 

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  • The role of extracellular vesicles of oral bacteria in systemic disease

    Grant number:19H04051  2019.04 - 2023.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    Okamura Hirohiko

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    Grant amount:\17160000 ( Direct expense: \13200000 、 Indirect expense:\3960000 )

    Periodontal disease is associated with the aggravation of systemic diseases such as diabetes. We have discovered extracellular vesicles derived from periodontal pathogens as a novel factor that relates to these diseases. This study investigated the dynamics and components of extracellular vesicles derived from periodontal pathogens and their toxicity to living tissues. These extracellular secretory vesicles contain a large amount of bacterium-specific virulence factors and reach distinct organs including the liver via the blood. Extracellular vesicles that reach the liver are thought to adversely affect blood glucose levels by suppressing glucose uptake by hepatocytes. Periodontal disease is thought to be highly involved in the aggravation of systemic diseases through extracellular vesicles derived from periodontal pathogens.

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  • Role of Type I Interferon in craniofacial morphogenesis

    Grant number:19K10381  2019.04 - 2022.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    Hayano Satoru

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    Grant amount:\4420000 ( Direct expense: \3400000 、 Indirect expense:\1020000 )

    Human mesenchymal stem cells were cultured in the osteogenic induction media. Type I interferon recombinant protein was administrated into the medium. Type I interferon reduced the number of osteoblasts and suppressed the ability to form substrates, and changed the osteoblast differentiation markers in the experimental group. In addition, the expression of proteins associated with necroptosis induced via the JAK-STAT pathway was also confirmed. The administration of a JAK-STAT inhibitor suppressed the above changes, suggesting that type I interferon causes necroptosis-based cell death and affects osteoblast differentiation at the same time. It was also suggested that JAK-STAT pathway inhibitors may suppress them.

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  • The clarification of bone formation and absorption mechanism in the bone marrow microenvironment

    Grant number:19H03842  2019.04 - 2022.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    Ono Mitsuaki

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    Grant amount:\17550000 ( Direct expense: \13500000 、 Indirect expense:\4050000 )

    BMP-2 has been widely studied for its potent ability to induce osteoblast differentiation and ectopic bone formation, and is already in clinical use worldwide. On the other hand, we have shown that BMP-2 inhibits bone formation in the bone marrow. However, the mechanism by which BMP-2 suppresses bone formation remains unclear. Therefore, we analyzed the detail of BMP-2 induced bone. Single cell RNA-seq analysis revealed that BMP-2-induced bone formed bone marrow with hematopoietic function. These results suggest that BMP-2 has the ability to regenerate bone marrow as an organ, and may suppress bone formation in the bone marrow in order to reserve space for hematopoiesis.

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  • Regulation of bone regeneration by exosomes and sugar chains derived from mechanical stress highly reactive mesenchymal stem cells

    Grant number:19K07269  2019.04 - 2022.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    Ikegame Mika

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    Grant amount:\4420000 ( Direct expense: \3400000 、 Indirect expense:\1020000 )

    We investigated the effect of exosomes secreted from preosteoblasts, on osteoblast differentiation and the effect of mechanical stress on the effect. As a result of adding exosomes obtained from the culture supernatant of the preosteoblast-like cell line (MC3T3-E1) to the osteoblast differentiation culture system, the expression of the osteoblast differentiation marker was suppressed. This effect was slightly strengthened in the exosomes from tensile-stressed cells. Therefore, it was suggested that exosomes produced from preosteoblasts have an osteoblast differentiation inhibitory effect, and that the inhibitory effect is enhanced by mechanical stress.

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  • Development of new combined cancer immunotherapy for malignant soft tissue tumor

    Grant number:19K09551  2019.04 - 2022.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    Nakata Eiji

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    Grant amount:\4420000 ( Direct expense: \3400000 、 Indirect expense:\1020000 )

    When PRRX1 was knocked down in an osteosarcoma cell line, which is a hyperlung metastatic strain, and the proliferative capacity was measured by the WST-8 assay, it was confirmed in vitro that the proliferation was strongly suppressed. It was also confirmed that when these cells were transplanted into mice, proliferation was suppressed as compared with the control group. In addition, when the osteosarcoma cells in which PRRX1 was knocked down were examined by wound healing assay and migration assay, the number of invading cells was reduced compared to the control group. Furthermore, osteosarcoma cells in which PRRX1 was knocked down were transplanted under the skin of mice, and 6 weeks later, the lungs of the mice were taken out and the number and size of lung metastases were compared with those of the control group. Then, it was found that the osteosarcoma cell group in which PRRX1 was knocked down had a smaller number of lung metastases.

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  • Malnutrition delayed wound healing by HMGB1-related prolonged inflammation

    Grant number:19K10128  2019.04 - 2022.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    Yamashiro Keisuke

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    Grant amount:\4290000 ( Direct expense: \3300000 、 Indirect expense:\990000 )

    In Japan, the gap between average life expectancy and healty life expectancy bacomes a big problem. This divergence is caused by diseases such as fractures and lifestyle-related diseases in the elderly. Malnutrition is one of the causes of further exacerbation of these diseases. In this study, we hypothesized that HMGB1, an inflammation mediator, is involved as one of the causes of prolonged inflammation during malnutrition. We made the malnutrition model mice and observed the wound healing process after tooth extraction. The factors related to inflammation (HMGB1 and IL-1β) expression were increasedand the actores related to regeneration and mesenchymal stem cells were decreased in the malnutriotion group compared to the control group. From these results, it was clarified that HMGB1-mediated delayed wound healing occurs in malnutrition.

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  • Elucidation of undifferentiated maintaining mechanism of stem cell towards the control of stem cell aging

    Grant number:18K19646  2018.06 - 2020.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Research (Exploratory)  Grant-in-Aid for Challenging Research (Exploratory)

    Kuboki Takuo

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    Grant amount:\6240000 ( Direct expense: \4800000 、 Indirect expense:\1440000 )

    Stem cells are required for lifelong homeostasis and regeneration of organs and tissues in mammals. However, aging of stem cells reduces cellular function and results in dysfunctional organs and tissues. Therefore, maintenance of the stemness of stem cells is of crucial importance, although its mechanisms are still unclear. The aim of this study was to identify the master regulator for the maintenance of stemness of bone marrow mesenchymal stem cells (BMSCs). First, we compared the RNA expression patterns between BMSCs derived from young and old mice, as well as between human BMSCs and human dermal fibroblasts using RNA-seq, and found that 30 transcription factors were highly expressed in BMSCs derived from young mice and in human BMSCs. Next, we found that several transcription factors could inhibit the induction to pluripotent stem (iPS) cells using iPS interfering method. The detailed function of these transcription factors in BMSCs are now being investigated.

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  • Understanding of molecular&#160;mechanisms&#160;of&#160;tooth development using iPS interference and application to tooth regeneration techniques

    Grant number:18H02991  2018.04 - 2021.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    Kuboki Takuo

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    Grant amount:\17550000 ( Direct expense: \13500000 、 Indirect expense:\4050000 )

    Whole-tooth regeneration is ultimate goal in dental field and the goal of this study is to identify the master transcription factors that characterize tooth germ derived epithelial and mesenchymal cells and develop method to generate those cells. First, we analyzed the mouse embryonic tooth germ and human stem cell from the apical papilla (hSCAP) by RNA-Seq and performed iPS interference to identify the potential transcription factors. Finally, candidate transcription factors were overexpressed in human adult dermal fibroblast (hADF), resulting that hADF was induced into the cells similar to tooth germ derived mesenchymal cells.

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  • Considering the effects of nerves on maxillofacial formation-elucidation of the etiology of hemifacial atrophy and hemifacial hypertrophy-

    Grant number:18K09832  2018.04 - 2021.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    Kawanabe Noriaki

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    Grant amount:\4420000 ( Direct expense: \3400000 、 Indirect expense:\1020000 )

    In this study, we conducted experiments to clarify the effects of the trigeminal nerve and facial nerve on the morphology of the maxillofacial region during growth. As a result of nerve activity blocking experiments and nerve activity activation experiments of the trigeminal nerve and facial nerve of rats, a decrease in the formation rate of cut teeth, calcification of the pulp, and disorder of the arrangement of ameloblasts and odontoblasts were observed. It was. In addition, as a result of analyzing Sonic hedgehog (Shh) gene-deficient mice and Shh gene-expressing mice, changes in bone and tooth morphology that are thought to be the effect of Shh on long-term maxillofacial morphogenesis were observed. As a result of conducting an experiment using fluorescence bioimaging, no characteristic stem cell dynamics were observed with or without nerve activity blocking / activation.

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  • ヒト多能性幹細胞に由来する分化指向性間葉系前駆細胞集団の選別単離方法の開発

    2018.04 - 2021.03

    日本医療研究開発機構(AMED)  再生医療実現拠点ネットワークプログラム(幹細胞・再生医学イノベーション創出プログラム) 

    宝田剛志

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  • 敗血症治療のためのHRG血液製剤の創出

    Grant number:19im0210109  2017.10 - 2020.03

    日本医療研究開発機構 (AMED)  医療分野研究成果展開事業  産学連携医療イノベーション創出プログラム 基本スキーム (ACT-M)

    西堀正洋, 和氣秀徳, 阪口政清, 宝田剛志, 勅使川原匡, 王登莉, 森松博史, 吉田道弘, 伊藤浩和, 上園昭人, 村上弘次, 前野英毅, 須加智也, 小林不二夫, 福永裕樹

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  • Molecular understanding of the accumulation of mesenchymal stem cells in vivo by photo-manipulation techniques and its application to bone-related diseases

    Grant number:17H04399  2017.04 - 2021.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    Takarada Takeshi

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    Grant amount:\16640000 ( Direct expense: \12800000 、 Indirect expense:\3840000 )

    In this study, we generated a tTA-dependent photoactivatable Cre-loxP recombinase knock-in mouse model (TRE-PA-Cre mice) using a CRISPR/Cas9 system. These mice were crossed with ROSA26-tdTomato mice (Cre reporter mouse) to visualize DNA recombination as marked by tdTomato expression. We demonstrated that external noninvasive LED blue light illumination allows efficient DNA recombination in the liver of TRE-PA-Cre:ROSA26-tdTomato mice transfected with tTA expression vectors using hydrodynamic tail vein injection. The TRE-PA-Cre mouse established here promises to be useful for optogenetic genome engineering in a noninvasive, spatiotemporal, and cell-type specific manner in vivo.

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  • Application of artificial periosteum containing BMP-2 to the treatment of refractory bone disease and bone nonunion.

    Grant number:17K11750  2017.04 - 2020.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    Kimura-Ono Aya

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    Grant amount:\4680000 ( Direct expense: \3600000 、 Indirect expense:\1080000 )

    Recently, we successfully regenerated the cortical bone-like bone, which is important to maintain the long-term stability of regenerated bone, using Escherichia coli-derived rhBMP-2 (E-rhBMP-2) adsorbed in PLGA membrane in rat model. The purpose of this study was to evaluate the E-rhBMP-2/PLGA membrane using peri-implantitis canine model. First, we generated the peri-implantitis model using beagle dogs and transplanted the autogenous bone to evaluate this animal model. Interestingly, autogenous bone graft could not recover the bone defect caused by peri-implantitis. Next, we transplanted the β-TCP containing E-rhBMP-2 in bone defects and covered with PLGA membrane containing E-rhBMP-2. Only β-TCP containing E-rhBMP-2 was transplanted as control group. As a result, PLGA membrane containing E-rhBMP-2 induced bone formation compared with control group. In conclusion, the PLGA membrane containing E-rhBMP-2 was efficient in bone formation in a peri-implantitis model in beagle dogs.

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  • 必須アミノ酸トリプトファンによる幹細胞老化制御機構の解明・骨質改善治療への応用

    Grant number:17K11751  2017.04 - 2018.03

    日本学術振興会  科学研究費助成事業 基盤研究(C)  基盤研究(C)

    笈田 育尚, 窪木 拓男, 大野 彩, 宝田 剛志, 大野 充昭

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    Grant amount:\4680000 ( Direct expense: \3600000 、 Indirect expense:\1080000 )

    口腔インプラント治療は,人工歯根が歯槽骨や顎骨と結合することにより強固な骨支持を得るため,骨量と骨質が重要な因子となる.しかし,日本人は欧米人と比べ歯槽骨が解剖学的に菲薄で,インプラント体埋入のために骨造成が必要な場合も少なくない.また,高齢化の進む日本で増加傾向にある骨粗鬆症患者へ口腔インプラント治療がなされる場合も多く,多くの研究者が骨造成や骨質改善に関する研究を進めてきた.
    我々は,これまでの研究から骨髄由来間葉系幹細胞の幹細胞性維持という観点からスクリーニングし,同定したトリプトファンが,骨質改善や骨の創傷治癒を促進することが明らかにした.この結果は,トリプトファンの投与が口腔インプラントの骨結合促進においても有用である可能性を強く示唆するものである.しかし,口腔インプラントの埋入に伴うトリプトファンの投与が,①骨のリモデリングを担う骨芽細胞,破骨細胞や間葉系幹細胞にどのような影響を与えるのか,また,②インプラント体の初期固定や長期予後に有意に働くのか,また,トリプトファンによる幹細胞の活性化が骨粗鬆症をはじめとする老化疾患に対して有効なのか,未だその詳細は明らかでない.
    そこで,本研究ではトリプトファンの骨代謝関連細胞に与える効果の検討を行うこととした.トリプトファンと間葉系幹細胞の骨芽細胞分化との関係性は明らかにしてきたが,破骨細胞との関係性は未だ不明である.はじめに,トリプトファンが破骨細胞分化に与える影響を検討した.すなわちトリプトファンを投与したマウスの大腿骨を経時的 (0, 3, 7, 14日)にサンプリングし,組織学的,分子生物学的に検討する計画をした.しかし本研究では研究期間が短く解析,評価するまでには至らなかった.
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  • Pericyte imaging for the early detection of psychiatric diseases

    Grant number:16KT0192  2016.07 - 2019.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    Takarada Takeshi

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    Grant amount:\4680000 ( Direct expense: \3600000 、 Indirect expense:\1080000 )

    In this study, we focused on the loss of pericyte existing around the cerebrovascular in Bmal1 KO mice, and tried to develop the tools for visualizing the pericyte for the purpose of directing early detection of the disease. As a result, we have found that the circadian clock system regulates PDGFRβ expression in the pericyte, followed by the regulation of the astrocyte activation state through modulation of cerebral vascular permeability. In addition, we have developped a PET/SPECT imaging probe using IQP, which is a compound having high affinity to PDGFRβ .

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  • 体内時計制御グリアネットワークによる「精神-疼痛」連関メカニズムの解明

    Grant number:16H01332  2016.04 - 2018.03

    日本学術振興会  科学研究費助成事業 新学術領域研究(研究領域提案型)  新学術領域研究(研究領域提案型)

    宝田 剛志

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    Grant amount:\9490000 ( Direct expense: \7300000 、 Indirect expense:\2190000 )

    グリア病である神経障害性疼痛は、精神的ストレスや精神疾患との関連性が臨床上指摘されている(うつを伴う慢性痛、統合失調症や自閉スペクトラム症での痛覚鈍麻など)。しかし、この「精神と疼痛(痛み)」の関連性(連関)の分子基盤は未解明である。本研究では、睡眠障害やうつ等の精神疾患に関連性が深い時計システム(体内時計)に注目し、「体内時計によるグリアネットワークの制御」という観点から、この「精神と疼痛」の謎に挑んだ。我々の解析結果より、睡眠障害等の精神疾患との関連性が深い体内時計システムが破綻したマウス(Bmal1欠損マウス)では、脳・脊髄組織でのアストロサイトの異常活性化が認められた。同マウスにて行動学的解析を実施した結果、多動といった精神行動異常が観察されただけでなく、神経障害性疼痛モデルを実施した結果、神経障害時におけるアロディニアが消失していた。更なる解析の結果、この病態は、血管周囲に存在するアストロサイト-ペリサイトアセンブリ異常による血液脳関門(BBB)破綻に起因することを見出した(J Neurosci.37:10052-10062,2017)。つまり、BBB恒常性は体内時計システムによるグリアネットワークの上に成り立ち、そのシステム破綻は、アストロサイトの異常活性化という段階を経て、精神/疼痛機構を共に破綻させることが示唆される。また、体内時計システムが破綻したマウスでは、脳幹部位特異的な炎症性サイトカインの上昇が観察され、脳幹の特定神経核での異常が行動異常の原因である可能性を見出した。

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  • in vivo analysis of Mesenchymal stem cells using Runx2 conditional KO mouse

    Grant number:26460387  2014 - 2016

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    Takarada Takeshi, Hinoi Eiichi

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\5070000 ( Direct expense: \3900000 、 Indirect expense:\1170000 )

    The cellular origin and essential period for Runx2 function during osteoblast differentiation in intramembranous ossification remain poorly understood. Paired related homeobox 1 (Prx1) is expressed in craniofacial mesenchyme, and Runx2 deficiency in Prx1+-derived cells (Runx2prx1-/- mice) resulted in defective intramembranous ossification. Double-positive cells for Prx1-GFP and stem cell antigen-1 (Sca1) (Prx1+Sca1+ cells) in the calvaria expressed Runx2 at lower levels and were more homogeneous and primitive as compared with Prx1+Sca1- cells. These findings indicate that the essential period of Runx2 function on intramembranous ossification would begin at the Prx1+Sca1+ mesenchymal stem cell stage and end at the Osx+Prx1-Sca1- osteoblast precursor stage.

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  • 体内時計によるグリアネットワーク調節に注目した「精神-疼痛」連関メカニズムの解明

    Grant number:26117507  2014 - 2015

    文部科学省  科学研究費補助金(新学術領域研究(研究領域提案型))  新学術領域研究(研究領域提案型)

    宝田 剛志

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\8320000 ( Direct expense: \6400000 、 Indirect expense:\1920000 )

    グリア病である神経障害性疼痛は、精神的ストレスや精神疾患との関連性が臨床上指摘されている(うつを伴う慢性痛、統合失調症や自閉スペクトラム症での痛覚鈍麻など)。しかし、この「精神と疼痛(痛み)」の関連性(連関)の分子基盤は未解明である。
    <BR>
    我々の解析結果より、睡眠障害等の精神疾患との関連性が深い体内時計システムが破綻したマウスでは、行動・疼痛機能の異常とともに、脳・脊髄組織でのアストロサイトでの異常活性化が認められる。これにより、血管周囲に存在するアストロサイト-ペリサイトアセンブリが異常をきたす可能性を提唱した。つまり、BBB恒常性は体内時計システムによるグリアネットワークの上に成り立つことを示唆するものである。

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  • 抗NMDAR抗体陽性患者血清を用いた全身性エリテマトーデス治療薬の開発研究

    2013

    産学が連携した研究開発成果の展開 研究成果展開事業 研究成果最適展開支援プログラム(A-STEP) 探索タイプ 

    宝田 剛志

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    本課題では、SLE患者血清中抗NMDAR抗体によるNMDAR活性化メカニズムを元にして、同活性化を抑制する既存の薬剤・化合物の効果を検証し、Evidenceに基づいたCNSループスに対する新規薬物療法の基盤を開発することを目標とした。本研究開発では、SLE患者血清中抗NMDAR抗体によるNMDA活性化作用が、NR1/NR2Bサブユニットから構成されるNMDARに作用することを明らかとしただけではなく、同活性化を阻害する化合物を見出すことに成功した。この解析結果は、同化合物がSLEにおけるCNSループスの薬物療法に適用できる可能性を示すものである。見出した化合物は、現在臨床適用されている既存薬であるため、ヒトでの安全性と体内動態が臨床にて充分に確認されている。今後は、同化合物を使用した動物実験や、ヒトでの臨床研究を展開し、SLEにおけるCNSループス治療をいち早く実施することを目指す。

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  • Bone as an endocrine organ

    Grant number:22659065  2010 - 2011

    Ministry of Education, Culture, Sports, Science and Technology  Grants-in-Aid for Scientific Research(挑戦的萌芽研究)  挑戦的萌芽研究

    Eiichi HINOI, Takeshi TAKARADA

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    Authorship:Collaborating Investigator(s) (not designated on Grant-in-Aid)  Grant type:Competitive

    Grant amount:\3030000 ( Direct expense: \2700000 、 Indirect expense:\330000 )

    We identified GDF15 as an endocrine factor secreted from osteocytes. Recombinant GDF15 significantly promoted osteoclastic differentiation. The anti-GDF15 antibody prevented bone loss through inhibiting osteoclastic activation in tibias from mice with femoral artery ligation in vivo. These findings suggest that GDF15 could play a pivotal role in the pathogenesis of bone loss relevant to hypoxia through promotion of osteoclastogenesis after secretion from adjacent osteocytes during disuse and/or ischemia in bone.

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  • Regulatory mechanisms of central nervous system by Runx2

    Grant number:22500330  2010 - 2011

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    TAKARADA Takeshi, HINOI Eiichi

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\3510000 ( Direct expense: \2700000 、 Indirect expense:\810000 )

    We have previously shown the functional expression of glutamatergic and GABAergic signaling machineries in different osseous cells including osteoblasts. Runt-related factor 2 (Runx2) is the master regulator of osteoblastic differentiation with ability to accelerate differentiation of mesenchymal stem cells into osteoblasts, while we have also demonstrated the expression of mRNA and corresponding protein for Runx2. In this study, we for the first time generated mice carrying a conditional Runx2 allele with exon 4, which encodes the Runt domain, flanked by loxP sites. These mice were crossed with α1(I)-collagen-Cre or α1(II)-collagen-Cre transgenic mice to obtain osteoblast- or chondrocyte-specific Runx2 deficient mice, respectively. In newborn α1(II)-Cre;Runx2^flox/flox mice, mineralization impairment was restricted to skeletal areas undergoing endochondral ossification including long bones and vertebrae. In contrast, no apparent skeletal abnormalities were seen in mutant embryo, newborn, and 3- to 6-week old-mice in which Runx2 had been deleted with the α1(I)-collagen-Cre driver. The Runx2 floxed allele established here is undoubtedly useful for investigating the role of Runx2 in particular cells.

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  • Joint disease and clock genes

    Grant number:20790250  2008 - 2009

    Ministry of Education, Culture, Sports, Science and Technology  Grants-in-Aid for Scientific Research(若手研究(B))  若手研究(B)

    Takeshi TAKARADA

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\4290000 ( Direct expense: \3300000 、 Indirect expense:\990000 )

    We have investigated the possible role of clock genes in mechanism underlying the regulation of chondrogenic differentiation processes. The results suggested that chondrogenic differentiation may be modulated by clock genes expressed by chondrocytes in association with the inhibition by Per1 of Bmal1/Clock-dependent indian hedgehog expression.

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  • 新規シグナル分子によるグリアニューロン相互回路網構築の可能性探究

    Grant number:18053009  2006 - 2007

    文部科学省  科学研究費補助金(特定領域研究)  特定領域研究

    米田幸雄, 寳田剛志

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    Grant type:Competitive

    Grant amount:\6100000 ( Direct expense: \6100000 )

    本研究では、脳内神経情報伝達物質が骨関節系細胞において細胞間情報伝達に利用される事実に基づいて、骨関節系細胞における情報分子群について脳内ニューロンおよびグリア細胞における機能的発現の可能性を探索した。特に、Runt related factor-2(Runx2)は間葉系幹細胞から骨芽細胞への分化と成熟過程に必須の転写制御因子であるが、中枢神経系における発現解析は全く行われていない。したがって本研究ではRunx2に焦点を当てて、その中枢神経系における機能的発現の可能性を追究するとともに、一過性脳虚血時における病態生理学的役割について検討した。RT-PCR法による解析の結果、ラット大脳皮質由来培養アストログリア細胞およびC6グリオーマ細胞ともにRunx2のmRNA発現が認められた。C6グリオーマ細胞にRunx2の発現ベクターを導入すると、Matrix metalloproteinase-13(MMP13)のmRNA発現量が有意に上昇することが明らかとなった。次いで、中大脳動脈結紮(MCAO)ラット脳におけるMMP13発現を検討した結果、MCAO負荷により梗塞側でMMP13のmRNA発現量の著明な上昇が認められた。以上の結果より、Runx2は中枢神経系内でも特にアストログリア細胞に強く発現するだけでなく、MMP13の発現制御を介して脳虚血病態出現に何らかの関与を示す可能性が示唆される。

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  • 細胞間コミュニケーションにおけるセリン光学異性体に関する研究

    Grant number:17790057  2005 - 2006

    文部科学省  科学研究費補助金(若手研究(B))  若手研究(B)

    宝田剛志

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\3400000 ( Direct expense: \3400000 )

    我々の研究グループでは、以前より骨関節組織を構成する骨芽細胞、破骨細胞および軟骨細胞の分化段階を制御する因子の探索を行っているが、近年中枢神経系において興奮性情報伝達物質として機能するグルタミン酸(Glu)が、これらの細胞において情報伝達物質として機能することを世界に先駆けて報告した。我々は、Gluシグナリング機構に関連する因子が骨関節組織においても存在するのではないかとの仮説に基づき、中枢神経系のGlu受容体の一種であるNMDA受容体の機能制御を行うD-Serの軟骨細胞分化に与える影響について解析を始めた。現在までのところ、培養骨芽細胞および軟骨細胞において、D-Ser合成酵素であるSRのmRNAおよびタンパク質の発現を認めており、またラット脛骨の組織切片を用いたin situ hybridization法においても骨芽細胞および軟骨細胞におけるSR mRNAの局在性を確認している。前軟骨細胞株であるATDC5細胞にSRを強制的に安定発現させた結果、軟骨細胞分化の指標であるアルシアンブルーの染色性が有意に抑制され、これが軟骨細胞分化過程において重要な役割を果たすSOX9の細胞内タンパク質の安定性に対して影響を与えることが明らかとなった。これらの結果より、D-Ser合成酵素であるSRが軟骨細胞の分化過程を制御する可能性は充分に高いことが予想され、更なる研究計画の効率的実施によ...

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