2023 Fiscal Year Final Research Report
Interactions between neuroinflammation and alpha-synuclein in a Parkinson's disease model.
Project/Area Number |
20K07903
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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 52020:Neurology-related
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Research Institution | Osaka University |
Principal Investigator |
Hayakawa Hideki 大阪大学, 大学院医学系研究科, 特任研究員 (70468594)
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Project Period (FY) |
2020-04-01 – 2024-03-31
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Keywords | パーキンソン病 / alpha-synuclein |
Outline of Final Research Achievements |
In the present study, LPS and ASC KO mice were used to analyse the relationship between induction or inhibition of microglial activation, α-syn aggregate formation and DA cell degeneration. Induction of microglial activation increased α-syn aggregate formation and DA cell degeneration, while inhibition of microglial activation suppressed α-syn aggregate formation and DA cell degeneration. These results suggest that chronic neuroinflammation is involved in α-syn aggregate formation and DA cell loss and therefore plays an important role in the progression of synucleinopathy.
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Free Research Field |
パーキンソン病
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Academic Significance and Societal Importance of the Research Achievements |
我々は、日本で報告されている家族性PDの一つであり、重度の早期発症運動、認知、精神症状を引き起こすG51D αsyn変異に注目し、このフィブリルを用いたマウス脳モデルを検討した。このモデルマウスは、従来の野生型αsyn線維注入マウスと比較して、強いリン酸化αsyn陽性凝集体形成、黒質ドパミン神経細胞の緩徐進行性変性、およびそれに伴う運動機能障害を示す。本研究では、αsyn線維を注射したマウスにリポ多糖(LPS)を浸透圧ミニポンプで投与することにより、神経炎症とミクログリアの活性化を介したαsynの伝播と凝集の分子メカニズムを解析した。
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