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論文

論文
岡田, 光
出版情報: 金沢大学十全医学会雑誌 = Journal of the Juzen Medical Society.  122  pp.35-36,  2013-06-01.  金沢大学十全医学会 = The Juzen Medical Society Kanazawa University
URL: http://hdl.handle.net/2297/35532
概要: Hepatocellular carcinoma (HCC) often develops in association with liver cirrhosis, and its high recurrence rate leads to poor patient prognosis. Although recent evidence suggests that peretinoin, a member of the acyclic retinoid family, may be an effective chemopreventive drug for HCC, published data about its effects on hepatic mesenchymal cells, such as stellate cells and endothelial cells, remain limited. Using a mouse model in which platelet-derived growth factor (PDGF)-C is overexpressed (Pdgf-c Tg), resulting in hepatic fibrosis, steatosis, and eventually, HCC development, we show that peretinoin significantly represses the development of hepatic fibrosis and tumors. Peretinoin inhibited the signaling pathways of fibrogenesis, angiogenesis, and Wnt/β-catenin in Pdgfc transgenic mice. In vitro, peretinoin repressed the expression of PDGF receptors α/β in primary mouse hepatic stellate cells (HSC), hepatoma cells, fibroblasts, and endothelial cells. Peretinoin also inhibited PDGF-C-activated transformation of HSCs into myofibroblasts. Together, our findings show that PDGF signaling is a target of peretinoin in preventing the development of hepatic fibrosis and HCC. ©2012 AACR.<br />[総説 / Reviews][博士課程優秀論文] 第11回 高安賞優秀論文賞受賞論文, Cancer Research 72 (17) , pp. 4459-4471(2012年9月掲載), Hikari Okada, Masao Honda, Jean S. Campbe, Yoshio Sakai, Taro Yamashita, Yuuki Takebuchi, Kazuhiro Hada, Takayoshi Shirasaki, Riuta Takabatake, Mikiko Nakamura,Hajime Sunagozaka, Takuji Tanaka, Nelson Fausto, and Shuichi Kaneko "Acyclic retinoid targets platelet-derived growth factor signaling in the prevention of hepatic fibrosis and hepatocellular carcinoma development." http://dx.doi.org/10.1158/0008-5472.CAN-12-0028 続きを見る
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論文

論文
岡田, 光 ; Okada, Hikari
出版情報: 平成30(2018)年度 科学研究費補助金 若手研究(B) 研究成果報告書 = 2018 Fiscal Year Final Research Report.  2017-04-01 – 2019-03-31  pp.5p.-,  2019-05-20.  金沢大学医薬保健学総合研究科
URL: http://hdl.handle.net/2297/00057039
概要: 非アルコール性脂肪性肝炎(NASH)の病因はまだ不明であり、肝細胞癌(HCC)の発症予防は確立されていない。申請者は、ペレチノインがマウスの肝組織においてオートファジーを誘導することを見出した。NASH病態進行に伴い肝組織内のAtg16L1 の発現の減少がみられた。HepG2細胞におけるAtg16L1の過剰発現は、パルミチン酸誘発NFκB活性化およびIL6 / STAT3活性化を阻害した。我々は、Atg16L1がIL6受容体であるGp130の脱リン酸化を誘導することを明らかにした。<br />The pathogenesis of non-alcoholic steatohepatitis (NASH) is still unclear and the prevention of the development of hepatocellular carcinoma (HCC) has not been established. We found that peretinoin induced autophagy in the liver of mice, which was characterized by the increased co-localized expression of LC3B-II and Lamp2, and increased autophagosome formation and autophagy flux in the liver. Especially, Atg16L1 was repressed at both the mRNA and protein level. Decreased Atg16L1 mRNA expression was also found in the liver of patients with NASH according to disease progression. Interestingly, Atg16L1 overexpression in HepG2 cells inhibited palmitate-induced NF-kB activation and IL6/ STAT3 activation. We showed that Atg16L1 induced the de-phosphorylation of Gp130, a receptor subunit of interleukin-6 family cytokines, which subsequently repressed phosphorylated STAT3 (Tyr705) levels, and this process might be independent of autophagy function.<br />研究課題/領域番号:17K15933, 研究期間(年度):2017-04-01 – 2019-03-31 続きを見る
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論文

論文
Hayashi, Tomoyuki ; Yamashita, Taro ; Terashima, Takeshi ; Suda, Tsuyoshi ; Okada, Hikari ; Asahina, Yoshiro ; Hayashi, Takehiro ; Hara, Yasumasa ; Nio, Kouki ; Sunagozaka, Hajime ; Takatori, Hajime ; Arai, Kuniaki ; Yamashita, Tatsuya ; Mizukoshi, Eishiro ; Honda, Masao ; Kaneko, Shuichi ; 林, 智之 ; 山下, 太郎 ; 寺島, 健志 ; 須田, 烈史 ; 岡田, 光 ; 朝日向, 良朗 ; 丹尾, 幸樹 ; 砂子阪, 肇 ; 鷹取, 元 ; 荒井, 邦明 ; 山下, 竜也 ; 水腰, 英四郎 ; 本多, 政夫 ; 金子, 周一
出版情報: BMC Cancer.  17  pp.870-,  2017-12-19.  BioMed Central Ltd.
URL: http://hdl.handle.net/2297/00050515
概要: 金沢大学先進予防医学研究科<br />Background: Sorafenib is a multiple receptor tyrosine kinase inhibitor known to prolong overall survival in patients with advanced hepatocellular carcinoma (HCC). Predicting this drug's survival benefits is challenging because clinical responses are rarely measurable during treatment. In this study, we hypothesized that serum cytokines levels could predict the survival of advanced HCC patients, as sorafenib targets signaling pathways activated in the tumor stromal microenvironment and potentially affects serum cytokine profiles. Methods: Of 143 patients with advanced-stage HCC, 104 who were recruited between 2003 and 2007 received hepatic arterial infusion chemotherapy (HAIC) that mainly targets tumor epithelial cells at S-phase (cohort 1); additionally, 39 recruited between 2010 and 2012 received sorafenib, which primarily targets the stromal vascular endothelial cells. Serum samples were collected and aliquoted prior to the treatment. Serum EGF, bFGF, HGF, IFN-γ, IL-10, IL-12, IL-2, IL-4, IL-5, IL-6, IL-8, IP-10, MIG, PDGF-BB, SCF, SDF1, TGF-β, TGF-α, TNF-α, and VEGF-A were measured via enzyme-linked immunosorbent assays. The Modified Response Evaluation Criteria in Solid Tumors were used to assess tumor responses. Results: The median survival time of HCC patients in cohorts 1 (HAIC-treated) and 2 (sorafenib-treated) were 12.0 and 12.4 months, respectively. Kaplan-Meier analysis revealed no significant survival differences between the 2 groups. Patients who survived more than 2 years after sorafenib treatment exhibited higher serum levels of IL-10, IL-12, TNF-a, IL-8, SDF-1, EGF, PDGF-BB, SCF, and TGF-α. Furthermore, cohort 2 patients with higher serum IL-5 (>12 pg/mL), IL-8 (>10 pg/mL), PDGF-BB (>300 pg/mL), and VEGF-A (>50 pg/mL) levels achieved longer survival; cohort 1 patients did not. Hierarchical cluster analysis of 6 cytokines robustly enriched for comparison analysis between cohorts 1 and 2 (IL-5, IL-8, TGF-α, PDGF-BB, CXCL9, and VEGF-A) revealed that elevation of these cytokines correlated with better survival when treated with sorafenib but not with HAIC. Conclusions: Patients who exhibited survival benefits owing to sorafenib treatment tended to present higher serum cytokines levels, potentially reflecting the activation of stromal signaling in the tumor microenvironment. Our study thus introduces novel biomarkers that may identify advanced HCC patients who may experience survival benefits with sorafenib treatment. © 2017 The Author(s). 続きを見る