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Cyclopedic analysis of microglia at the cerebral infarction : The dynamics and treatment application

Research Project

Project/Area Number 18K16587
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 56010:Neurosurgery-related
Research InstitutionEhime University

Principal Investigator

Matsumoto Shirabe  愛媛大学, 医学部附属病院, 助教 (30772503)

Project Period (FY) 2018-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords脳虚血 / マイクログリア / アポトーシス / 貪食 / Eat-me signal / 脳梗塞 / eat-me signal / TGF-β1
Outline of Final Research Achievements

Activated microglia phagocytose neurons which survived at the periphery of cerebral infarction through eat-me signal cascade; ProteinS/MerTK and complement/CD11b. This Phagocytosis is thought to be associated with delayed neuronal loss (DNL). GM-CSF/IL-3 increased expression of the anti-apoptotic molecule Bcl-xL on neurons. The Bcl-xL maintained the mitochondrial function of neurons and increased the intracellular ATP. The intracellular ATP decreased phosphatidylserine which was exposed to the neuronal surface , eat-me signal molecules was less likely to combine with neurons, and neuronal phagocytosis by the microglia was suppressed.

Academic Significance and Societal Importance of the Research Achievements

重症脳梗塞は、虚血超急性期の後も徐々に神経細胞死が進行していくことが臨床上重要な問題である。虚血辺縁部では、生存した神経細胞がマイクログリアによって貪食されている現象が起こっている。本研究では、この神経細胞とマイクログリアの貪食に関わっているeat-me signalの分子を解明した。また、GM-CSF/IL-3というサイトカインが、この虚血辺縁の神経細胞のアポトーシス、マイクログリアの貪食を抑制する作用があることを示し、脳梗塞治療ターゲットとなりうる可能性があることを示した。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • Research Products

    (6 results)

All 2019 2018

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (3 results)

  • [Journal Article] Phagocytic elimination of synapses by microglia during sleep2019

    • Author(s)
      Choudhury Mohammed E.、Miyanishi Kazuya、Takeda Haruna、Islam Afsana、Matsuoka Nayu、Kubo Madoka、Matsumoto Shirabe、Kunieda Takeharu、Nomoto Masahiro、Yano Hajime、Tanaka Junya
    • Journal Title

      Glia

      Volume: 68 Issue: 1 Pages: 44-59

    • DOI

      10.1002/glia.23698

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Comparison of the detrimental features of microglia and infiltrated macrophages in traumatic brain injury: a study using a hypnotic bromovalerylurea2018

    • Author(s)
      Abe N, Choudhury ME, Watanabe M, Kawasaki S, Nishihara T, Yano H, Matsumoto S, Kunieda T, Kumon Y, Yorozuya T, Tanaka J
    • Journal Title

      Glia

      Volume: 66(10) Issue: 10 Pages: 2158-2173

    • DOI

      10.1002/glia.23469

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Truncated CD200 stimulates tumor immunity leading to fewer lung metastases in a novel Wistar rat metastasis model2018

    • Author(s)
      Kuwabara Jun、Umakoshi Akihiro、Abe Naoki、Sumida Yutaro、Ohsumi Shota、Usa Eika、Taguchi Kana、Choudhury Mohammed E.、Yano Hajime、Matsumoto Shirabe、Kunieda Takeharu、Takahashi Hisaaki、Yorozuya Toshihiro、Watanabe Yuji、Tanaka Junya
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 496 Issue: 2 Pages: 542-548

    • DOI

      10.1016/j.bbrc.2018.01.065

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] ラット脳梗塞モデルにおける貪食メカニズムとIL-3/GM-CSF投与の有効性2019

    • Author(s)
      松本 調
    • Organizer
      第78回日本脳神経外科学会総会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 脳梗塞に対するIL-3/GM-CSFの混合投与による骨髄刺激療法有効性の検討2018

    • Author(s)
      松本 調、久門 良明、渡邉 英昭、田中 潤也、國枝 武治
    • Organizer
      Stroke2018 (2018.3.15-3.18)福岡
    • Related Report
      2018 Research-status Report
  • [Presentation] ラット脳梗塞モデルにおける活性型および静止型マイクログリアと骨髄由来マクロファージの差異について2018

    • Author(s)
      松本 調、久門 良明、渡邉 英昭、田中 潤也、國枝 武治
    • Organizer
      脳神経外科学会総会(2018.10.10-10.12)仙台
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2021-02-19  

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