研究者詳細 - 藤原　俊義

MISC - 藤原　俊義

分割表示 922 件中 281 - 300 件目／全件表示 >>

PD-L1 expression as a predictive factor for recurrence pattern and prognosis in curatively resected gastric cancer

Toshiaki Morihiro, Shinji Kuroda, Tetsushi Kubota, Hiroshi Tazawa, Shunsuke Kagawa, Toshiyoshi Fujiwara

CANCER RESEARCH 76 2016年7月

Prognostic correlation of tumor-infiltrating lymphocytes (TILs) and cancer associated fibroblasts (CAFs) in patients with human esophageal carcinoma

Takuya Kato, Kazuhiro Noma, Yuki Katsura, Hajime Kashima, Takayuki Ninomiya, Toshiaki Ohara, Hiroshi Tazawa, Shunsuke Kagawa, Yasuhiro Shirakawa, Toshiyoshi Fujiwara

CANCER RESEARCH 76 2016年7月

A novel live imaging system for inflammation-induced epithelial-mesenchymal transition in colorectal cancers

Takeshi Ieda, Hiroshi Tazawa, Satoru Kikuchi, Shinji Kuroda, Toshiaki Ohara, Kazuhiro Noma, Hiroyuki Kishimoto, Takeshi Nagasaka, Masahiko Nishizaki, Shunsuke Kagawa, Toshiyoshi Fujiwara

CANCER RESEARCH 76 2016年7月

Iron control is a novel therapeutic target of cancer stem cells

Toshiaki Ohara, Takayuki Ninomiya, Kazuhiro Noma, Hajime Kashima, Yuki Katsura, Takuya Kato, Yasuko Tomono, Hiroshi Tazawa, Shunsuke Kagawa, Yasuhiro Shirakawa, Toshiyoshi Fujiwara

CANCER RESEARCH 76 2016年7月

Functional analysis of tumor associated macrophage utilizing virus-guided fluorescent imaging of pancreatic cancer cells in the peritoneal cavity

Kazuya Kuwada, Shunsuke Kagawa, Megumi Watanabe, Shuichi Sakamoto, Satoru Kikuchi, Shinji Kuroda, Ryuichi Yoshida, Hiroshi Tazawa, Tetuya Kagawa, Toshiyoshi Fujiwara

CANCER RESEARCH 76 2016年7月

Novel HER2-targeted gold nanoparticles; integration of antibody therapy and nanotechnology

Tetsushi Kubota, Shinji Kuroda, Toshiaki Morihiro, Hiroshi Tazawa, Shunsuke Kagawa, Toshiyoshi Fujiwara

CANCER RESEARCH 76 2016年7月

Correlation of FAP(fibroblast activation protein)-expressing cancer associated fibroblasts (CAFs) and tumor metastasis in esophageal carcinoma

Hajime Kashima, Kazuhiro Noma, Yuki Katsura, Takuya Kato, Ryoichi Katsube, Takayuki Ninomiya, Toshiaki Ohara, Hiroshi Tazawa, Shunsuke Kagawa, Yasuhiro Shirakawa, Toshiyoshi Fujiwara

CANCER RESEARCH 76 2016年7月

Genome-wide enhancer analysis identifies PVT1 as an oncogenic enhancer of MYC

Kunitoshi Shigeyasu, Shusuke Toden, Takeshi Nagasaka, Toshiyoshi Fujiwara, C. Richard Boland, Ajay Goel

CANCER RESEARCH 76 2016年7月

Virally enhanced p53 reactivation impairs KRAS-driven pancreatic cancer invasion

Takeshi Koujima, Hiroshi Tazawa, Takeshi Leda, Kazuya Kuwada, Terutaka Tanimoto, Shinji Kuroda, Hiroyuki Kishimoto, Masahiko Nishizaki, Yasuo Urata, Shunsuke Kagawa, Toshiyoshi Fujiwara

CANCER RESEARCH 76 2016年7月

Clinical significance of SNORA21, an H/ACA box snoRNA, as a metastasis predicting and prognostic biomarker in colorectal cancer

Kazuhiro Yoshida, Shusuke Toden, Wenhao Weng, Takeshi Nagasaka, Toshiyoshi Fujiwara, Ajay Goel

CANCER RESEARCH 76 2016年7月

Ablation of MCL1 expression by virally induced microRNA-29 reverses chemoresistance in human osteosarcomas

Shuhei Osaki, Hiroshi Tazawa, Joe Hasei, Yasuaki Yamakawa, Toshinori Omori, Kazuhisa Sugiu, Tadashi Komatsubara, Tomohiro Fujiwara, Tsuyoshi Sasaki, Toshiyuki Kunisada, Aki Yoshida, Yasuo Urata, Shunsuke Kagawa, Toshifumi Ozaki, Toshiyoshi Fujiwara

SCIENTIFIC REPORTS 6 2016年6月

記述言語：英語出版者・発行元：NATURE PUBLISHING GROUP

Osteosarcoma is a rare disease diagnosed as malignant bone tumor. It is generally refractory to chemotherapy, which contributes to its poor prognosis. The reversal of chemoresistance is a major clinical challenge to improve the prognostic outcome of osteosarcoma patients. We developed a tumor-specific replication-competent oncolytic adenovirus, OBP-301 (telomelysin) and assessed its synergistic effects with chemotherapeutic agents (cisplatin and doxorubicin) using human osteosarcoma cell lines and a xenograft tumor model. The molecular mechanism underlying the chemosensitizing effect of OBP-301 was evaluated in aspects of apoptosis induction. OBP-301 inhibits anti-apoptotic myeloid cell leukemia 1 (MCL1) expression, which in turn leads to chemosensitization in human osteosarcoma cells. The siRNA-mediated knockdown of MCL1 expression sensitized human osteosarcoma cells to common chemotherapeutic agents. We also found that upregulation of microRNA-29 targeting MCL1 via virally induced transcriptional factor E2F-1 activation was critical for the enhancement of chemotherapy-induced apoptosis in osteosarcoma cells. Telomerase-specific oncolytic adenovirus synergistically suppressed the viability of human osteosarcoma cells in combination with chemotherapeutic agents. The combination treatment also significantly inhibited tumor growth, as compared to monotherapy, in an osteosarcoma xenograft tumor model. Our data suggest that replicative virus-mediated tumor-specific MCL1 ablation may be a promising strategy to attenuate chemoresistance in osteosarcoma patients.

DOI： 10.1038/srep28953

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Surgical Outcome of Patients Undergoing Pancreaticoduodenectomy: Analysis of a 17‒Year Experience at a Single Center

Takagi K, Yagi T, Yoshida R, Shinoura S, Umeda Y, Nobuoka D, Kuise T, Watanabe N, Sui K, Fuji T, Fujiwara T

Acta Medica Okayama 70 ( 3 ) 197 - 203 2016年6月

Recurrence after Endoscopic Curative Resection of Mucosal Gastric Cancer Associated with an Adjacent Neoplastic Precursor Lesion

Satoru Kikuchi, Shunsuke Kagawa, Toshiaki Ohara, Tetsushi Kubota, Kazuya Kuwada, Tetsuya Kagawa, Shinji Kuroda, Yasuhiro Shirakawa, Masahiko Nishizaki, Toshiyoshi Fujiwara

ACTA MEDICA OKAYAMA 70 ( 3 ) 213 - 216 2016年6月

記述言語：英語出版者・発行元：OKAYAMA UNIV MED SCHOOL

A 69-year-old man underwent endoscopic submucosal dissection (ESD) for early gastric cancer (EGC) at the lesser curvature in the angle of stomach. Histological examination revealed tub1, pM, ly0, v0, pLM(-), pVM(-), and the resection was considered curative. The scar after ESD was followed by esophagogastroduodenoscopy (EGD) and biopsy. Twenty months later, EGD showed an ulcerative lesion in the vicinity of the ESD scar, and histological examination of the biopsy specimen showed adenocarcinoma. A distal gastrectomy with lymph node dissection was then performed. Postoperative pathology showed tub1, pM, pN0, ly0, v0, and Stage 1A. Skip lesions were seen in the specimen resected by ESD, and the histological review confirmed so-called "dysplasia-like atypia" (DLA) between the lesions. It has been reported recently that in DLA, the dysplasia-like change involves only the bases of the pits, without upper pit or surface epithelium involvement, and it is said that the rate of DLA is higher in gastric cancer patients. We speculated that a precancerous lesion close to the resected cancer developed into a local recurrence.

DOI： 10.18926/AMO/54421

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Ablation of MCL1 expression by virally induced microRNA-29 reverses chemoresistance in human osteosarcomas

SCIENTIFIC REPORTS 6 ( 28953 ) doi: 10.1038/srep28953 2016年6月

記述言語：英語出版者・発行元：NATURE PUBLISHING GROUP

DOI： 10.1038/srep28953

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Eradication of osteosarcoma by fluorescence-guided surgery with tumor labeling by a killer-reporter adenovirus

Shuya Yano, Shinji Miwa, Hiroyuki Kishimoto, Yasuo Urata, Hiroshi Tazawa, Shunsuke Kagawa, Michael Bouvet, Toshiyoshi Fujiwara, Robert M. Hoffman

JOURNAL OF ORTHOPAEDIC RESEARCH 34 ( 5 ) 836 - 844 2016年5月

記述言語：英語出版者・発行元：WILEY-BLACKWELL

In a previous study, we developed fluorescence-guided surgery (FGS) for osteosarcoma using an orthotopic model with 143B human osteosarcoma cells expressing red fluorescent protein (RFP) implanted into the intramedullary cavity of the tibia in nude mice. The FGS-treated mice had a significantly higher disease-free survival (DFS) rate than the bright-light surgery (BLS). However, although FGS significantly reduced the recurrence of the primary tumor, it did not reduce lung metastasis. In the present study, we utilized the OBP-401 telomerase-dependent killer-reporter adenovirus, carrying green fluorescent protein (GFP), to label human osteosarcoma in situ in orthotopic mouse models. OBP-401-illuminated human osteosarcoma cell lines, 143B and MNNG/HOS cells in vitro and in vivo. OBP-401 tumor illumination enabled effective FGS of the 143B-derived orthotopic mouse model of human osteosarcoma model as well as FGS eradication of residual cancer cells after BLS. OBP-401-assisted FGS significantly inhibited local recurrence and lung metastasis after surgery, thereby prolonging DFS and overall survival (OS), achieving a very important improvement of therapeutic outcomes over our previously reported FGS study. These therapeutic benefits of FGS were demonstrated using a clinically-viable methodology of direct labeling of human osteosarcoma in situ with the OBP-401 killer-reporter adenovirus in contrast with previous reports, which used genetically engineered labeled cells or antibody-based fluorescent labels for FGS. (c) 2015 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 34:836-844, 2016.

DOI： 10.1002/jor.23073

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Diminished Gastric Resection Preserves Better Quality of Life in Patients with Early Gastric Cancer

Hiroshi Isozaki, Sasau Matsumoto, Shigeki Murakami, Takehiro Takama, Tatuo Sho, Kiyohiro Ishihara, Kunihiko Sakai, Masanori Takeda, Koji Nakada, Toshiyoshi Fujiwara

ACTA MEDICA OKAYAMA 70 ( 2 ) 119 - 130 2016年4月

記述言語：英語出版者・発行元：OKAYAMA UNIV MED SCHOOL

Using the Postgastrectomy Syndrome Assessment Scale (PGSAS)-45, we compared the surgical outcomes and the quality of life (QOL) between patients undergoing limited gastrectomies and those undergoing conventional gastrectomies. In Oomoto Hospital between January 2004 and December 2013, a total of 124 patients who met the eligibility criteria were enrolled. Using the main outcome measures of PGSAS-45, we compared 4 types of limited gastrectomy procedures (1/2 distal gastrectomy [1/2DG] in 21 patients; pylorus-preserving gastrectomy [PPG] in 15 patients; segmental gastrectomy [SG] in 26 patients; and local resection [LR] in 13 patients) with conventional gastrectomy (total gastrectomy [TG] in 24 patients and 2/3 or more distal gastrectomy [WDG] in 25 patients). The TG group showed the worst QOL in almost all items of the main outcome measures. The 1/2DG, PPG, and SG groups showed better QOL than the WDG group in many of the main outcome measures, including the body weight ratio, total symptom score, ingested amount of food per meal, and the dissatisfaction for daily life subscale. The LR group showed a better intake of food than the 1/2DG, PPG, and SG groups. The body weight ratio of the LR group was better than that of the SG group. Diminished gastric resection preserved better QOL in patients with early gastric cancer.

DOI： 10.18926/AMO/54191

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Adenoviral targeting of malignant melanoma for fluorescence-guided surgery prevents recurrence in orthotopic nude-mouse models

Shuya Yano, Kiyoto Takehara, Hiroyuki Kishimoto, Yasuo Urata, Shunsuke Kagawa, Michael Bouvet, Toshiyoshi Fujiwara, Robert M. Hoffman

ONCOTARGET 7 ( 14 ) 18558 - 18572 2016年4月

記述言語：英語出版者・発行元：IMPACT JOURNALS LLC

Malignant melanoma requires precise resection in order to avoid metastatic recurrence. We report here that the telomerase-dependent, green fluorescent protein (GFP)-containing adenovirus OBP-401 could label malignant melanoma with GFP in situ in orthotopic mouse models. OBP-401-based fluorescence-guided surgery (FGS) resulted in the complete resection of malignant melanoma in the orthotopic models, where conventional bright-light surgery (BLS) could not. High-dose administration of OBP-401 enabled FGS without residual cancer cells or recurrence, due to its dual effect of cancer-cell labeling with GFP and killing.

DOI： 10.18632/oncotarget.6670

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外科学用語集Web版の一部改訂について(会員へのメッセージ)

藤原俊義

日本外科学会雑誌 117 ( 2 ) 91 - 91 2016年3月

Trastuzumab-Based Photoimmunotherapy Integrated with Viral HER2 Transduction Inhibits Peritoneally Disseminated HER2-Negative Cancer

Michihiro Ishida, Shunsuke Kagawa, Kyoko Shimoyama, Kiyoto Takehara, Kazuhiro Noma, Shunsuke Tanabe, Yasuhiro Shirakawa, Hiroshi Tazawa, Hisataka Kobayashi, Toshiyoshi Fujiwara

MOLECULAR CANCER THERAPEUTICS 15 ( 3 ) 402 - 411 2016年3月

記述言語：英語出版者・発行元：AMER ASSOC CANCER RESEARCH

Peritoneal dissemination is the most frequent metastasis in gastric cancer and is associated with poor prognosis. The lack of particular target antigens in gastric cancer other than HER2 has hampered the development of treatments for peritoneal dissemination of gastric cancer. Wehypothesized that HER2-extracellular domain (HER2-ECD) gene transduction combined with trastuzumab-based photoimmunotherapy (PIT) might provide excellent and selective antitumor effects for peritoneal dissemination of gastric cancer. In vitro, adenovirus/HER2-ECD (Ad/HER2-ECD) efficiently transduced HER2-ECD into HER2-negative gastric cancer cells. Trastuzumab-IR700 (Tra-IR700)-mediated PIT induced selective cell death of HER2-ECD-transduced tumor cells. Ad/HER2-ECD also induced homogenous expression of HER2 in heterogeneous gastric cancer cells, resulting in uniform sensitivity of the cells to Tra-IR700-mediated PIT. Anti-HER2 PIT integrated with adenoviral HER2-ECD gene transfer was applied in mice bearing peritoneal dissemination of HER2-negative gastric cancer. Intraperitoneal administration of Ad/HER2-ECD and Tra-IR700 with PIT inhibited peritoneal metastasis and prolonged the survival of mice bearing MKN45. Furthermore, minimal side effects allowed the integrated therapy to be used repeatedly, providing better control of peritoneal dissemination. In conclusion, the novel therapy of molecular-targeted PIT integrated with gene transfer technology is a promising approach for the treatment of peritoneal dissemination in gastric cancer. (C) 2016 AACR.

DOI： 10.1158/1535-7163.MCT-15-0644

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Improved Resection and Outcome of Colon-Cancer Liver Metastasis with Fluorescence-Guided Surgery Using In Situ GFP Labeling with a Telomerase-Dependent Adenovirus in an Orthotopic Mouse Model

Shuya Yano, Kiyoto Takehara, Shinji Miwa, Hiroyuki Kishimoto, Yukihiko Hiroshima, Takashi Murakami, Yasuo Urata, Shunsuke Kagawa, Michael Bouvet, Toshiyoshi Fujiwara, Robert M. Hoffman

PLOS ONE 11 ( 2 ) doi: 10.1371/journal.pone.0148760. 2016年2月

記述言語：英語出版者・発行元：PUBLIC LIBRARY SCIENCE

Fluorescence-guided surgery (FGS) of cancer is an area of intense development. In the present report, we demonstrate that the telomerase-dependent green fluorescent protein (GFP)-containing adenovirus OBP-401 could label colon-cancer liver metastasis in situ in an orthotopic mouse model enabling successful FGS. OBP-401-GFP-labeled liver metastasis resulted in complete resection with FGS, in contrast, conventional bright-light surgery (BLS) did not result in complete resection of the metastasis. OBP-401-FGS reduced the recurrence rate and prolonged over-all survival compared with BLS. In conclusion, adenovirus OBP-401 is a powerful tool to label liver metastasis in situ with GFP which enables its complete resection, not possible with conventional BLS.

DOI： 10.1371/journal.pone.0148760

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