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Analysis of molecular mechanism underling reactive astrocyte-induced multiple sclerosis

Research Project

Project/Area Number 19K07366
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 48040:Medical biochemistry-related
Research InstitutionOita University (2022-2023)
Nagoya University (2019, 2021)

Principal Investigator

Ito Norimichi  大分大学, 医学部, 客員研究員 (30726310)

Project Period (FY) 2021-01-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
KeywordsIFITM3 / astrocyte / 脱髄 / アストロサイト / ifitm3
Outline of Research at the Start

多発性硬化症(MS)は脱髄を伴う自己免疫疾患であり、活性化されたアストロサイトがミエリンの消失(脱ミエリン化)や再ミエリン化の障害を惹起することが知られている。研究代表者らはinterferon-induced transmembrane protein 3 (IFITM3)が活性化アストロサイトに発現誘導され、液性因子の放出を介して神経細胞障害を惹起することを明らかにしてきた。本研究ではMSの病態を理解するためにIFITM3に注目し、脱ミエリン化および再ミエリン化に及ぼす影響とその制御機構についての解析を行う。

Outline of Final Research Achievements

Multiple sclerosis is chronic inflammatory disease of central nerve system characterized by demyelination. Molecular mechanism of etiology underling inflammation-induced demyelination is not well-known. Previous study found that IFITM3 is a key molecule in inflammation-induced neuronal impairment. However, It is unknown the involvement of IFITM3 in multiple sclerosis. The purpose of this study is to understand the role of IFITM3 in inflammation-induced demyelination. We found that expression level of IFITM3 increased in cuprizon-treated mice. Increased expression of IFITM3 occurred before demyelination and lasted during inflammation.

Academic Significance and Societal Importance of the Research Achievements

本研究によりIFITM3は脱髄に先立って惹起される脳内炎症反応により発現誘導されることが明らかとなった。今後IFITM3の発現変化をより詳細に解析することで、IFITM3の測定がMSの診断に役立つなど、臨床応用への発展が期待できる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (3 results)

All 2022 2021

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (2 results)

  • [Journal Article] Microinjection of Reelin into the mPFC prevents MK-801-induced recognition memory impairment in mice2021

    • Author(s)
      Sawahata Masahito、Asano Hiroki、Nagai Taku、Ito Norimichi、Kohno Takao、Nabeshima Toshitaka、Hattori Mitsuharu、Yamada Kiyofumi
    • Journal Title

      Pharmacological Research

      Volume: 173 Pages: 105832-105832

    • DOI

      10.1016/j.phrs.2021.105832

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Phosphorylation of twinfilin-1 involved in the reelin signaling plays a crucial role in spine development2022

    • Author(s)
      Dong Geyao、 伊藤 教道、溝口 博之、松崎 哲郎、森 大輔、永井 拓、鍋島 俊隆、尾崎 紀夫、山田 清文
    • Organizer
      第141回日本薬理学会近畿部会
    • Related Report
      2022 Research-status Report
  • [Presentation] Behavioral analysis of a mouse model carrying a mutation on Twinfilin1 gene2021

    • Author(s)
      Geyao Dong, Yue Liu, Ryuichi Ikeyama, Masahito Sawahata, Norimichi Itoh, Jingzhu Liao, Daisuke Mori, Hiroyuki Mizoguchi, Toshitaka Nabeshima, Norio Ozaki, Kiyofumi Yamada
    • Organizer
      第139回日本薬理学会近畿部会
    • Related Report
      2021 Research-status Report

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Published: 2019-04-18   Modified: 2025-01-30  

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