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2022 Fiscal Year Final Research Report

Mechanism for biosynthesis and degradation of lipid molecules controlling appetite and lipid metabolism

Research Project

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Project/Area Number 20K11571
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 59040:Nutrition science and health science-related
Research InstitutionKawasaki Medical School

Principal Investigator

TSUBOI Kazuhito  川崎医科大学, 医学部, 准教授 (80346642)

Co-Investigator(Kenkyū-buntansha) 北風 圭介  川崎医科大学, 医学部, 助教 (80840545)
竹之内 康広  川崎医科大学, 医学部, 講師 (30582233)
Project Period (FY) 2020-04-01 – 2023-03-31
Keywords肥満 / 脂質代謝 / 脂質メディエーター / リソソーム酵素 / セラミド / N-アシルエタノールアミン
Outline of Final Research Achievements

N-Acylethanolamines are lipid mediators showing several bioactivities including appetite suppression and lipolysis. In the present study, we focused on their degrading enzymes. Our cell- and animal tissue-level analyses revealed that acid ceramidase, which has been recognized as a ceramide-hydrolyzing enzyme, is actually involved in the hydrolysis of N-acylethanolamines. Furthermore, we found that LAMCA, a fluorescent substrate of this enzyme, is also a substrate of a similar enzyme, N-acylethanolamine acid amidase; which should be considered when using this substrate.

Free Research Field

脂質生物学

Academic Significance and Societal Importance of the Research Achievements

本研究の学術的意義として、脂質メディエーターであるN-アシルエタノールアミンの新たな代謝酵素として、酸性セラミダーゼを明らかにしたことが挙げられる。同時に、蛍光色素を用いた本酵素の活性測定の問題点が浮き彫りとなった。社会的意義としては、新たなN-アシルエタノールアミン代謝酵素の発見により、本酵素の阻害という新たな作用機序を持つ抗肥満薬の開発に繋がる可能性を有することが挙げられる。

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Published: 2024-01-30  

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