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Elucidation of motor learning strategy via two types of the cerebellar synaptic plasticity

Research Project

Project/Area Number 17K01982
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Basic / Social brain science
Research InstitutionNational Center of Neurology and Psychiatry (2019)
Institute of Physical and Chemical Research (2017-2018)

Principal Investigator

Yamaguchi Kazuhiko  国立研究開発法人国立精神・神経医療研究センター, 神経研究所 微細構造研究部, 客員研究員 (00191221)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords小脳 / シナプス可塑性 / 長期抑圧LTD / プルキンエ細胞 / アンパ型グルタミン酸受容体 / リサイクリング / 運動学習 / マウス / グルタミン酸受容体 / 長期抑圧 / 受容体リサイクリング / 誤差信号 / パッチクランプ法 / 反動性増強 / 抑制性介在ニューロン / 受容体トラフィッキング / 樹状突起スパイン / 最初期遺伝子
Outline of Final Research Achievements

Long-term depression (LTD) of synaptic transmission between parallel fiber and Purkinje cell is essential for motor learning in the cerebellum. The size of the LTD was reported to be graded in rats, but not in mice. In the present study, the presence of graded LTD formation was examined in mice cerebellar slice, and as a result, LTD was formed in an all-or-nothing manner in mice. We have also reported that there is a constitutive recycling of AMPA-type glutamate receptors in rat Purkinje cells, but not in mice. A simulation using a model suggests that constitutive recycling of AMPA-receptor is advantageous for graded LTD formation. The graded LTD was considered to be advantageous for the difficult motor learning by volition, and the direction of evolution was suggested.

Academic Significance and Societal Importance of the Research Achievements

脳神経科学において、遺伝子と行動発現の因果関係の解析には、30年以上にわたり、ほとんど唯一のモデル動物としてマウスが用いられてきた。少なくとも小型実験動物においてはマウスの脳神経機能のみが報告されてきた。しかし、マウスとラットの間には大きな進化的ギャップがあることが心理実験等から示唆されている。本研究において、ラットのみで見られる段階的可塑性の形成に、ひいては意志による学習に、構成性AMPA受容体リサイクリングの有無が重要であることを初めて示唆した。ヒトのリハビリの基礎における意志と効果を最適化する実験動物としてはラットが有用であることが示唆され、今後の医療面への応用の道を開いた。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (9 results)

All 2020 2019 2018 2017

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (7 results) (of which Int'l Joint Research: 3 results,  Invited: 3 results)

  • [Journal Article] Assessment of Long-term Depression Induction in Adult Cerebellar Slices2019

    • Author(s)
      Yamaguchi Kazuhiko, Ito Masao
    • Journal Title

      Journal of Visualized Experiments

      Volume: - Issue: 152

    • DOI

      10.3791/59859

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Autism-like behaviours and enhanced memory formation and synaptic plasticity in Lrfn2/SALM1-deficient mice2017

    • Author(s)
      Morimura Naoko、Yasuda Hiroki、Yamaguchi Kazuhiko、Katayama Kei-ichi、Hatayama Minoru、Tomioka Naoko H.、Odagawa Maya、Kamiya Akiko、Iwayama Yoshimi、Maekawa Motoko、Nakamura Kazuhiko、Matsuzaki Hideo、Tsujii Masatsugu、Yamada Kazuyuki、Yoshikawa Takeo、Aruga Jun
    • Journal Title

      Nature Communications

      Volume: 8 Issue: 1 Pages: 15800-15800

    • DOI

      10.1038/ncomms15800

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 小脳機能の基礎研究:現状と展望2020

    • Author(s)
      山口 和彦
    • Organizer
      小脳研究会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 小脳の長期抑圧LTDは運動学習に必須か?2019

    • Author(s)
      山口 和彦
    • Organizer
      Motor control 研究会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Mechanism of long-term synaptic plasticity in rat cerebellar Purkinje cell2018

    • Author(s)
      Yamaguchi, Kazuhiko
    • Organizer
      第75回藤原セミナー」”中枢神経系のハブとしての小脳”
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Reduction of exocytic insertion of AMPA-receptors into parallel fiber-Purkinje cell synapse is involved in LTD-expression2018

    • Author(s)
      Yamaguchi, Kazuhiko
    • Organizer
      11th FENS forum of neuroscience
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Analysis of Rapid Decrease in EPSC Amplitude after Sudden Block of Exocytic Insertion of AMPAR into Parallel Fiber-Purkinje Cell synapse2018

    • Author(s)
      Yamaguchi, Kazuhiko
    • Organizer
      第41回日本神経科学大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Kinetic analysis of constitutive and activity dependent receptor-trafficking in cerebellar Purkinje cell2017

    • Author(s)
      Yamaguchi K.
    • Organizer
      Society for Neuroscience, Washington D.C., U.S.A.
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Patch-clamp techniques for studying physiological properties of the central neuron2017

    • Author(s)
      Yamaguchi K.
    • Organizer
      IBRO-APRC Advanced Hong Kong School of Neuroscience
    • Related Report
      2017 Research-status Report
    • Invited

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Published: 2017-04-28   Modified: 2021-02-19  

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