2023 Fiscal Year Final Research Report
Activation of microglia by lipid metabolites and inhibitory effect by natural nuclear receptor agonists
Project/Area Number |
20K22728
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Research Category |
Grant-in-Aid for Research Activity Start-up
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Allocation Type | Multi-year Fund |
Review Section |
0801:Pharmaceutical sciences and related fields
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Research Institution | Aichi Gakuin University |
Principal Investigator |
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Project Period (FY) |
2020-09-11 – 2024-03-31
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Keywords | 脂質代謝 / アルツハイマー / ミクログリア / 核内受容体 / 炎症 |
Outline of Final Research Achievements |
Dyslipidemia is a risk factor for the development of Alzheimer's disease (AD). Since it is now believed that inflammatory responses caused by activation of central microglia induce the onset of AD, we hypothesized that "activation of microglia" caused by "alteration of lipid metabolism" may precede the onset of AD. It was suggested that palmitic acid (PA), used as a lipid metabolism modulator, increased the mRNA expression of inflammatory markers and apoptosis-inducing factors, and that this was suppressed by the retinoid X receptor (RXR) agonist bexarotene (BEX). These results suggest that PA-induced microglial activation is suppressed via RXR.
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Free Research Field |
天然医薬資源学
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Academic Significance and Societal Importance of the Research Achievements |
今までミクログリアの活性化を脂質代謝の変調の観点から調べるアプローチ法はなかった。ADプレクリニカル期における「脂質代謝の変調」という新しいパラメーターを明らかにすることで、ミクログリアの活性化の理解が大きく進むことが期待される。また、NRによる遺伝子転写調節はアゴニストの微妙な構造の違いで異なる。AD治療薬としての既存のアゴニストは重篤な副作用を示すものが多い。今後、異なる遺伝子発現誘導をするであろう、構造の多様性に富む天然由来NRアゴニストの探索を行い、AD治療に対し病態生理機能の調節に有用である新しいアプローチ法と治療薬の発見に繋がることが期待される。
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