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2023 Fiscal Year Final Research Report

Deciphering hepatic feeding-state-dependent metabolic gene regulation coordinated by intercellular crosstalk

Research Project

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Project/Area Number 21H03382
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 59040:Nutrition science and health science-related
Research InstitutionNippon Medical School

Principal Investigator

Sakai Mashito  日本医科大学, 大学院医学研究科, 大学院教授 (40643490)

Co-Investigator(Kenkyū-buntansha) 厚川 正則  日本医科大学, 医学部, 准教授 (00386161)
菱川 大介  日本医科大学, 医学部, 講師 (10569966)
山崎 吉之  日本医科大学, 医学部, 助教 (90407685)
Project Period (FY) 2021-04-01 – 2024-03-31
Keywordsクッパー細胞 / インスリンシグナル / 肝代謝
Outline of Final Research Achievements

The expression of hepatic metabolic enzymes is regulated at the gene transcription level, mainly by hormones and nutrients, thereby maintaining the systemic homeostasis of glucose and lipid metabolism. Kupffer cells are resident macrophages in the liver and are assumed to affect hepatic gene expression through secreted factors. We investigated the role of Kupffer cells in hepatic metabolic gene regulation using inducible Kupffer cell ablation and found that Kupffer cell-derived factors regulated hepatic metabolic genes including glucocorticoid receptor target genes in hepatocytes during feeding.

Free Research Field

病態生化学

Academic Significance and Societal Importance of the Research Achievements

肝臓における摂食依存性の遺伝子発現制御メカニズムの解明は、糖尿病・代謝疾患研究における重要な課題である。本研究では、肝臓の組織マクロファージであるクッパー細胞が肝細胞の糖・脂質代謝を調節する可能性を考えて検討した。その結果、クッパー細胞は肝細胞において摂食依存性に制御されるグルココルチコイド受容体標的遺伝子の発現を調節する機能を持つことが明らかとなった。

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Published: 2025-01-30  

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