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2018 Fiscal Year Final Research Report

Functional role of intracellular muscarinic receptor for hippocampal adult neurogenesis

Research Project

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Project/Area Number 16K19012
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field General pharmacology
Research InstitutionAsahikawa Medical College

Principal Investigator

Uwada Junsuke  旭川医科大学, 医学部, 助教 (70580314)

Project Period (FY) 2016-04-01 – 2019-03-31
Keywordsムスカリン受容体 / 神経新生 / MAPキナーゼ
Outline of Final Research Achievements

Neurogenesis in the hippocampal dentate gyrus is important to generate and maintain functional neurons, therefore which has gained interest as clinical target of neurological diseases, like dementia. In this study, we found the neural stem cells in hippocampal dentate gyrus express functional intracellular muscarinic M1 receptor. Stimulation of intracellular M1 receptors activated MAP kinase (ERK1/2) signaling. Our results indicate that muscarinic stimulation might contribute to the proliferation and maintenance of neural stem cells in hippocampal dentate gyrus through activation of intracellular M1 receptors.

Free Research Field

分子薬理学

Academic Significance and Societal Importance of the Research Achievements

海馬歯状回は成人においても神経細胞が新しく作られる神経新生の場であり、認知症など加齢に伴う神経疾患に関わるものとして着目されている。一方、アセチルコリンの受容体であるムスカリンM1受容体はこれまで細胞の表面に存在して働くと考えられてきた。本研究で我々は細胞の内部に局在するM1受容体が細胞の増殖や維持に関わるシグナルを引き起こすことを明らかにし、神経新生を亢進する新たな治療ターゲットとなりうる可能性を示した。

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Published: 2020-03-30  

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