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2019 Fiscal Year Final Research Report

Roles of Pin1 and PAR 14 on the metabolic regulations

Research Project

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Project/Area Number 17H04200
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Metabolomics
Research InstitutionHiroshima University

Principal Investigator

Asano Tomoichiro  広島大学, 医系科学研究科(医), 教授 (70242063)

Co-Investigator(Kenkyū-buntansha) 中津 祐介  広島大学, 医系科学研究科(医), 講師 (20452584)
山本屋 武  広島大学, 医系科学研究科(医), 助教 (50760013)
Project Period (FY) 2017-04-01 – 2020-03-31
KeywordsPin1 / 糖尿病 / 肥満 / 代謝 / メタボリックシンドローム
Outline of Final Research Achievements

Prolyl isomerases are divided into three groups, the FKBP family, Cyclophilin and the Parvulin family (Pin1 and Par14). Among these isomerases, Pin1 is a unique prolyl isomerase binding to the motif including pSer/pThr-Pro that is phosphorylated by kinases. Once bound, Pin1 modulates the enzymatic activity, protein stability or subcellular localization of target proteins by changing the cis- and trans- formations of proline.  Interestingly, while Pin1 expression is markedly increased by high-fat diet feeding, Pin1 KO mice are resistant to diet-induced obesity, non-alcoholic steatohepatitis and diabetic vascular dysfunction. These phenomena result from the binding of Pin1 to several key factors regulating metabolic functions, which include insulin receptor substrate-1, AMPK, Crtc2 and NF-kappaB p65.

Free Research Field

生化学

Academic Significance and Societal Importance of the Research Achievements

我々の一連の研究成果より、肥満や脂肪感を含めたメタボリックシンドロームの発症にPin1が必須の役割を果たしていることが明らかとなった。実際、Pin1の遺伝子欠損マウスは、これらの疾患の発症に抵抗性である。従って、Pin1の活性を抑制する薬剤が治療方法になりうることが示された。我々は、その目的を目指しており、多数のPin1阻害化合物を開発しており、社会的意義のある成果である。

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Published: 2021-02-19  

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