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2022 Fiscal Year Final Research Report

The mechanism of ALS pathogenic accelation by systemic inflammation

Research Project

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Project/Area Number 21K20875
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0902:General internal medicine and related fields
Research InstitutionYokohama City University

Principal Investigator

KOMIYA Hiroyasu  横浜市立大学, 附属病院, 指導診療医 (90794553)

Project Period (FY) 2021-08-30 – 2023-03-31
Keywordsミクログリア / マクロファージ / ALS
Outline of Final Research Achievements

We generated CX3CR1-GFP/CCR2-RFP/SOD1 Tg mice by crossing SOD1 Tg mice, a mouse model of ALS, with CX3CR1-EGFP/CCR2-RFP mice.Chronic systemic inflammation was induced by repeated intraperitoneal administration of lipopolysaccharide or poly(I:C), and we evaluated survival, motor function, and histological analyses.
There were significant survival shortening and worsening of motor function in the poly(I:C) treated group compared to the wild type. In addition, we detected significant motor neuron reduction in the lumbar spinal cord of poly(I:C)-treated mice at 20 weeks.

Free Research Field

神経科学

Academic Significance and Societal Importance of the Research Achievements

本研究を通じて、感染・外傷などに惹起される全身炎症にともなう神経変性疾患の病勢進行において、神経系・免疫系・血液系をつなぐ担い手である単球系細胞が大きな役割を果たしていることが証明できれば、神経変性疾患を「全身病」として捉える疾患理解のパラダイムシフトをもたらすことが期待され、また、本研究における新規病勢マーカーや新規治療標的の同定によって、神経細胞のみに留まっている既存のALS治療戦略を越えた、新規の治療戦略を提示し得ると考えられる。

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Published: 2024-01-30  

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