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2023 Fiscal Year Final Research Report

Role of FLP1 in metabolic-related fatty liver

Research Project

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Project/Area Number 21K15424
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 49030:Experimental pathology-related
Research InstitutionFukuoka University

Principal Investigator

Aibara Daisuke  福岡大学, 薬学部, 准教授 (10636567)

Project Period (FY) 2021-04-01 – 2024-03-31
Keywords脂肪肝 / MAFLD / NAFLD / 核内受容体 / PPAR / 遺伝子発現制御 / OSBPL3
Outline of Final Research Achievements

We aimed to investigate the role of FLP1 in the MAFLD. Analysis of human liver transcriptome data revealed a trend toward increased FLP1 expression in the livers of MAFLD patients compared to healthy livers. Although high expression of FLP1 was observed in the fatty liver of type 2 diabetic ob/ob mice, liver-specific Pparg knockout ameliorated this increase in these mice. Reporter and electrophoretic mobility shift assays showed that PPARγ positively regulates FLP1 transcription by binding to the functional PPARγ-responsive elements present in the 5' upstream region. These results suggest that FLP1 may contribute to hepatic steatosis formation as a novel PPARγ target in MAFLD.

Free Research Field

分子生物学

Academic Significance and Societal Importance of the Research Achievements

本研究の成果から、FLP1 は脂肪肝モデルマウスの肝臓で高発現し、その発現は PPARγ によって直接的に制御されていることが明らかになった。さらに、FLP1 の発現は、ヒト MAFLD 患者において増加傾向を示すことが明らかになった。近年、FLP1 (OSBPL3) は、その下流に位置する脂肪酸合成関連遺伝子群の発現を調節することで、マウスの脂肪肝形成に関与しうることが示された。したがって、本研究で見出した新規脂肪蓄積シグナル (PPARγ-FLP1) 経路は、MAFLD 及びその他の関連病態の新たな予防・治療標的となる可能性がある。

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Published: 2025-01-30  

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