| Project/Area Number |
23658244
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Basic veterinary science/Basic zootechnical science
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| Research Institution | Kagoshima University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
FUJIKI Makoto 鹿児島大学, 共同獣医学部, 准教授 (60305167)
刀袮 重信 川崎医科大学, 医学部, 准教授 (70211399)
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| Co-Investigator(Renkei-kenkyūsha) |
TONE Shigenobu 川崎医科大学, 医学部, 准教授 (70211399)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | ガン細胞 / 細胞増殖 / タンパク質高次構造変化 / 抗がん剤 / ケミカルライブラリー / レポーターアッセイ / タンパク質高次構造 |
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| Research Abstract |
Perchloric acid-soluble protein (PSP) has an anti-proliferating activity. Its activity seems to be suppressed in cells, because the PSP exists in proliferating cells. Crystal structural analysis of PSP shows that PSP exist as a homo-trimer. Our preliminary experiment, however, suggested PSP existed not only timer but also monomer or dimer. To elucidate that changing higher-order protein structure of PSP is related to cell proliferation, we evaluated the state of higher-order protein structure of PSP during liver regeneration after partial hepatectomy in rats. As a result, PSP existed as trimer in normal liver, but the ratio of trimer of PSP decreased after hepatectomy and the ration of monomer or dimer of PSP increased until liver weight returned to the intact weight. It is suspected monomer or dimer PSP not to suppress cell proliferation. Additionally, we identified the DNA position for expression and regulation of PSP mRNA. We identified two molecules to induce PSP expression.
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