2022 Fiscal Year Final Research Report
Elucidation of Epigenome network for regulating inflammation memory
Project/Area Number |
20K07328
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 48040:Medical biochemistry-related
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Research Institution | Kumamoto University |
Principal Investigator |
KOGA Tomoaki 熊本大学, 発生医学研究所, 講師 (30615092)
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Project Period (FY) |
2020-04-01 – 2023-03-31
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Keywords | 炎症メモリー / エピゲノム / 細胞記憶 / マクロファージ / ヒストンメチル化 |
Outline of Final Research Achievements |
Immunological memory has been thought to be restricted to acquired immunity for a long time, but recent reports showed that innate immune cells and non-immune cells also remember their experience to be exposed to inflammation. Now it is called "Inflammatory memory". In inflammatory memory, what kinds of cells can remember, how they can remember, and what is the meaning of memory, those questions remain to be elucidated. In the present study, we focused on macrophages to reveal the molecular mechanisms of inflammatory memory. As a result, we found mevalonate pathway is important for the regulation of inflammatory memory. In addition, we identified a histone demethylase KDM7A as a novel negative regulator for M2 macrophage polarization. These results indicate new insights into the understanding of inflammatory memory.
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Free Research Field |
分子生物学、脂質生化学、免疫学
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Academic Significance and Societal Importance of the Research Achievements |
本研究ではマクロファージを用いて炎症メモリーの分子機構の一端を解明した。炎症メモリーは慢性炎症の増悪化に寄与するなど、難治性病態に深く関わる。今回、炎症メモリーのメカニズムとしてメバロン酸経路を同定したことは、学術的に興味深いだけでなく、既に臨床で使われているスタチンなどの薬剤が慢性炎症の治療に使える可能性を示唆するものである。また、M2マクロファージ極性化の新たな分子機構を解明したことについては、KDM7Aというあまり機能が知られていない分子の機能を明らかにしたというだけではなく、肺線維症の治療標的を提起した上でも非常に意義深い。
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