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Functional significance of the dual transmission by the cerebro-cerebellar pathway

Research Project

Project/Area Number 18K06529
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 46030:Function of nervous system-related
Research InstitutionJikei University School of Medicine

Principal Investigator

Ishikawa Taro  東京慈恵会医科大学, 医学部, 准教授 (50547916)

Co-Investigator(Kenkyū-buntansha) 志牟田 美佐  東京慈恵会医科大学, 医学部, 講師 (70609172)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords大脳小脳連関 / プルキンエ細胞 / 小脳顆粒細胞 / 橋核 / 小脳 / 光遺伝学 / オプトジェネティクス / 体性感覚 / 運動学習
Outline of Final Research Achievements

In vivo recordings from cerebellar granule cells in mice, in which the neocortex can be optogenetically suppressed, showed that tactile stimulus responses in granule cells were bimodal, with only slow responses being neocortex-dependent. In Purkinje cells, the slow simple spikes and complex spikes evoked by tactile stimulation were neocortex-dependent. These results indicated that individual granule cells combine convergent inputs from the periphery and neocortex and send their outputs to Purkinje cells, which then integrate those signals with climbing fiber signals from the neocortex.

Academic Significance and Societal Importance of the Research Achievements

本研究は実験動物(マウス)を用いて大脳から小脳への信号の連絡様式について基本的な仕組みを示したものだが、同様の回路はヒトでも機能しているものと考えられる。さらに、動物に比べて、ヒトはより大きな大脳を持つため、大脳と小脳の結びつき(大脳小脳連関)はより強力であると考えられている。小脳は体の運動の制御に重要であるが、それのみならず、近年では、原因が未だ明らかでない自閉症スペクトラム障害などの異常においても、大脳と小脳の連関の異常が影響していることが示唆されている。本研究で明らかになった回路原理は、様々な疾患とその治療の研究の基礎となるものである。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (15 results)

All 2022 2020 2019 2018 Other

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 4 results) Presentation (8 results) (of which Int'l Joint Research: 3 results,  Invited: 4 results) Remarks (3 results)

  • [Journal Article] Multiple signals evoked by unisensory stimulation converge onto cerebellar granule and Purkinje cells in mice2020

    • Author(s)
      Misa Shimuta, Izumi Sugihara, Taro Ishikawa
    • Journal Title

      Communications biology

      Volume: 3(1) Issue: 1 Pages: 381-381

    • DOI

      10.1038/s42003-020-1110-2

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] De novo CACNA1G variants in developmental delay and early-onset epileptic encephalopathies2020

    • Author(s)
      Misako Kunii, Hiroshi Doi, Shunta Hashiguchi, Toyojiro Matsuishi, Yasunari Sakai, Mizue Iai, Masaki Okubo, Haruko Nakamura, Keita Takahashi, Atsuko Katsumoto, Mikiko Tada, Hideyuki Takeuchi, Taro Ishikawa, Noriko Miyake, Hirotomo Saitsu, Naomichi Matsumoto, Fumiaki Tanaka
    • Journal Title

      Journal of the Neurological Sciences

      Volume: 416 Pages: 117047-117047

    • DOI

      10.1016/j.jns.2020.117047

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Convergence of unisensory-evoked signals via multiple pathways to the cerebellum2019

    • Author(s)
      Misa Shimuta, Izumi Sugihara, Taro Ishikawa
    • Journal Title

      bioRxiv

      Volume: -

    • DOI

      10.1101/769000

    • Related Report
      2019 Research-status Report
    • Open Access
  • [Journal Article] Ataxic phenotype with altered CaV3.1 channel property in a mouse model for spinocerebellar ataxia 422019

    • Author(s)
      Hashiguchi S, Doi H, Kunii M, Nakamura Y, Shimuta M, (32名略) Ishikawa T, Tanaka F
    • Journal Title

      Neurobiology of Disease

      Volume: 130 Pages: 104516-104516

    • DOI

      10.1016/j.nbd.2019.104516

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 小脳における感覚信号の統合2022

    • Author(s)
      石川太郎
    • Organizer
      日本小脳学会第12回学術集会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Multiple cortico-cerebellar pathways in sensory signaling2020

    • Author(s)
      Taro Ishikawa
    • Organizer
      第43回日本神経科学大会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Convergence of sensory-evoked signals via multiple pathways in the cerebellum2019

    • Author(s)
      Taro Ishikawa, Izumi Sugihara, Misa Shimuta
    • Organizer
      Society for Neuroscience Annual Meeting
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] プルキンエ細胞と顆粒細胞における大脳小脳連関信号の統合2019

    • Author(s)
      石川太郎
    • Organizer
      第13回Motor control研究会, シンポジウム「小脳が関与する制御機能の最前線 -基礎と臨床の融合を目指して」
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Convergence of sensory-evoked multi-pathway signals in the cerebellum2019

    • Author(s)
      志牟田美佐, 杉原泉, 石川太郎
    • Organizer
      第42回日本神経科学大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Cerebellar integration of neocortical somatosensory signals2019

    • Author(s)
      Misa Shimuta, Izumi Sugihara, Taro Ishikawa
    • Organizer
      FAOPS2019
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Cerebellar integration of multiple input signals2018

    • Author(s)
      Misa Shimuta,Izumi Sugihara,Taro Ishikawa
    • Organizer
      The 75th Fujihara seminar
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Processing of sensory-evoked signals in the cerebro-cerebellar communication2018

    • Author(s)
      Taro Ishikawa
    • Organizer
      河北医科大学病理生理学高端学術論壇
    • Related Report
      2018 Research-status Report
    • Invited
  • [Remarks] 研究室webページ

    • URL

      http://www.jikei-pharm.com/member/ishikawa

    • Related Report
      2021 Annual Research Report 2018 Research-status Report
  • [Remarks] プレスリリース:大脳からの信号と末梢神経からの信号が小脳の神経回路において統合される

    • URL

      http://www.jikei.ac.jp/news/press_release_20200716.html

    • Related Report
      2020 Research-status Report
  • [Remarks] 小脳入力信号の機能的解析

    • URL

      http://www.jikei-pharm.com/member/ishikawa

    • Related Report
      2019 Research-status Report

URL: 

Published: 2018-04-23   Modified: 2023-01-30  

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