2022 Fiscal Year Final Research Report
Molecular mechanism of remyelination via extracellular vesicles released from glial progenitor cells
Project/Area Number |
20K06871
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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 46010:Neuroscience-general-related
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Research Institution | Nagoya University |
Principal Investigator |
Ono Kenji 名古屋大学, 環境医学研究所, 助教 (80329698)
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Project Period (FY) |
2020-04-01 – 2023-03-31
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Keywords | 細胞外小胞 / グリア前駆細胞 / オリゴデンドロサイト / ミクログリア / オプトジェネティクス |
Outline of Final Research Achievements |
We have previously reported that glial progenitor cells expressing photo-activated cation channels can induce differentiation into oligodendrocytes with blue light exposure, and that the differentiated cells contribute to recovery from demyelinating diseases. In this study, we found that exosomes released from the differentiated glial progenitor cells by photo-activation were increased and the contents of exosomes, including miRNAs, were altered. We also found that microglia undergo a polarity shift from M1 to M2 by accepting their exosomes.
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Free Research Field |
神経科学
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Academic Significance and Societal Importance of the Research Achievements |
本研究では、脱髄疾患においてグリア前駆細胞から放出されるエクソソームが脱髄周囲のミクログリアに取り込まれることで、エクソソーム内のmiRNAを介してミクログリアの機能を調節していることが示唆された。これまでにグリア前駆細胞が放出する細胞外小胞を介した細胞間情報伝達に焦点をあてた研究はほとんどなく、脱髄疾患など中枢神経系疾患における再ミエリン化を促進する分子機構の理解や将来的な新規診断・治療法の開発に役立つと考えられた。
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