| Project/Area Number |
24614003
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Integrated Nutrition Science
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| Research Institution | Akita University |
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Principal Investigator |
Yamaguchi Noriko 秋田大学, 医学(系)研究科(研究院), 准教授 (90251553)
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| Co-Investigator(Kenkyū-buntansha) |
YOSHIKAWA Kiwamu 秋田大学, 大学院医学系研究科, 助教 (90400481)
MEZAKI Yoshihiro 東京慈恵会医科大学, 医学部, 講師 (40431621)
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| Project Period (FY) |
2012-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 肝硬変 / 肝臓星細胞 / アノイキス / コラーゲン / MMP / アノイキス誘導 / 肝線維症 / トコール / ビタミンＥ / ビタミンE / 細胞外マトリックス / 肝線維化 / NASH |
|---|
| Outline of Final Research Achievements |
In pathological conditions, hepatic stellate cells (HSCs) are activated and play crucial roles in liver fibrosis and hepatic cirrhosis. We reported that tocol, a vitamin E-analogous compound, strongly inhibited the proliferation and promoted the apoptosis of activated HSCs. Significant cell detachment was observed in tocol-treated HSCs, and apoptosis was mainly observed in floating cells. Therefore, it is considered that tocol induced anoikis, a specific type of apoptosis. In this study, the fragmentation of focal adhesion kinase was observed in tocol-treated cells, and protease inhibitors attenuated the cell detachment. Gene expression variation analysis showed that tocol elicited decreased expression of fibrillar collagens and increased expression of matrix metalloproteinases, which degrade extracellular matrix proteins.
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