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2023 Fiscal Year Final Research Report

Elucidation of the novel transcriptional regulatory mechanism to separate glucocorticoid actions.

Research Project

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Project/Area Number 22K19714
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 59:Sports sciences, physical education, health sciences, and related fields
Research InstitutionKumamoto University

Principal Investigator

Yoshizawa Tatsuya  熊本大学, 大学院生命科学研究部(医), 准教授 (40313530)

Project Period (FY) 2022-06-30 – 2024-03-31
Keywordsグルココルチコイド / サーチュイン / 骨格筋
Outline of Final Research Achievements

By using knockout cells and mice for SIRT7 which is the member of Sirtuins (SIRT1-7 in mammals) regulating a wide variety of biological process, we revealed that SIRT7 play an important role for the glucocorticoid-induced osteopenia and osteoporosis. On the other hand, the loss of SIRT7 didn't affect the anti-inflammatory actions of glucocorticoids. Furthermore, we discovered that SIRT7 remove succinyl moieties from glucocorticoid receptor (GR). Finally, further studies of SIRT7-GR axis will have significant implications for the development of novel drugs attenuating the side effects of steroids.

Free Research Field

運動器代謝学

Academic Significance and Societal Importance of the Research Achievements

転写因子のアセチル化以外のアシル化修飾において、その役割・重要性・制御機構の大部分が未解明である。したがって、GRの新規スクシニル化修飾およびその転写制御機構の解明は、GC作用の研究分野を超えて多くの生命現象に関わる研究であり学術的に大きな意義を持つ。
副作用を軽減させた選択的GR調節薬の開発が世界的に進められているが、未だに十分な効果・成果を得られていない。本研究による新規GR転写制御機構の解明が将来の選択的GR調節薬の開発に大きく貢献できるばかりか、SIRT7やスクシニル化GR結合因子などが創薬ターゲットとなる可能性が高く、ステロイド療法の研究分野を大きく変革・発展させるポテンシャルがある。

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Published: 2025-01-30  

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