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2020 Fiscal Year Final Research Report

Mechanisms of adipocyte beiging based on extracellular phospholipid metabolism

Research Project

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Project/Area Number 18K06128
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 43030:Functional biochemistry-related
Research InstitutionThe University of Tokyo

Principal Investigator

Sato Hiroyasu  東京大学, 大学院医学系研究科(医学部), 助教 (50546629)

Project Period (FY) 2018-04-01 – 2021-03-31
Keywords脂肪細胞ベージュ化 / ホスホリパーゼA2 / メタボリックシンドローム / リン脂質代謝 / 脂肪酸 / リピドミクス
Outline of Final Research Achievements

I aim to obtain new insights into novel regulatory mechanisms for metabolic diseases by sPLA2-driven extracellular phospholipid metabolism.
We found that (1) sPLA-IID, which preferentially releases ω3 PUFAs possibly from phospholipids in extracellular vesicles, promotes adipocyte browning and thermogenesis, thereby counteracting obesity-associated metabolic complications and WAT inflammation; (2) sPLA-IIE, which produce free fatty acids possibly from phospholipids in extracellular vesicles, promotes adipocyte browning and thermogenesis; (3) sPLA2 receptor deficiency promotes adipocyte browning and thermogenesis.

Free Research Field

脂質生物学

Academic Significance and Societal Importance of the Research Achievements

本研究は、ω3脂肪酸の肥満予防効果に新たな学術的理解を与えるとともに、脂肪組織の微小環境においてω3脂肪酸が内因的に動員されるメカニズムを解明した。sPLA2-IID-ω3脂肪酸経路を賦活化する戦略は、肥満や糖尿病などの生活習慣病の新規予防・治療法の開発につながる可能性があり社会的にも重要な成果である。また新たに細胞外リン脂質代謝による脂肪細胞ベージュ化の新たな調節機構の一端を見出したことから学術的な意義が高い。

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Published: 2022-01-27  

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