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Physiological role of vesicular glutamate release from glial cells

Research Project

Project/Area Number 17K07070
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Neurophysiology / General neuroscience
Research InstitutionTokyo Metropolitan Institute of Medical Science

Principal Investigator

MIYASHITA Tomoyuki  公益財団法人東京都医学総合研究所, 脳・神経科学研究分野, 主席研究員 (70270668)

Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsグリア細胞 / 小胞性グルタミン酸輸送体 / NMDA受容体 / Mg2+ ブロック / 連合学習 / ショウジョウバエ / 匂い嫌悪学習 / 学習 / 記憶 / グルタミン酸 / vGluT / エクソサイトーシス / 開口放出 / glia / memory / drosophila
Outline of Final Research Achievements

We identified a novel vesicular glutamate transporter (dvGluT2) expressed in Drosophila glial cells, suggesting that dvGluT2 is required for aversive associative learning, i.e., exocytosis of glutamate from glial cells is required for associative learning. Furthermore, it was found that the information of electric shock was input via NMDA receptors (NR) in the mushroom body (MB). In summary, we proposed a model in which electric shock induces vesicular exocytosis of glutamate in glia, and the released glutamate induces Ca2+ influx via NRs during the depolarization of postsynaptic MB neurons by odor stimulation.

Academic Significance and Societal Importance of the Research Achievements

近年、グリア細胞は神経の可塑性に重要な役割を持つことが次々と明らかになってきている。しかし、本研究ではグリア細胞が、嫌悪の情報を記憶中枢に伝えているという全く新しいグリア細胞の機能を明らかにしたと考えている。さらに、連合学習における、無条件刺激が条件刺激に対して同時または、遅れて与えられたときのみ連合学習が成立するメカニズムを明らかにできたと考えている

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (16 results)

All 2021 2020 2019 2018 Other

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (11 results) (of which Invited: 3 results) Remarks (3 results)

  • [Journal Article] Dopamine modulates the optomotor response to unreliable visual stimuli in Drosophila melanogaster2020

    • Author(s)
      Akiba M, Sugimoto K, Aoki R, Murakami R, Miyashita T, Hashimoto R, Hiranuma A, Yamauchi J, Ueno T, Morimoto T.
    • Journal Title

      European Journal of Neuroscience

      Volume: 51-3 Issue: 3 Pages: 822-839

    • DOI

      10.1111/ejn.14648

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Long-Term Memory Engram Cells Are Established by c-Fos/CREB Transcriptional Cycling.2018

    • Author(s)
      Miyashita T, Kikuchi E, Horiuchi J, Saitoe M
    • Journal Title

      Cell Reports

      Volume: 25 Issue: 10 Pages: 2716-2728

    • DOI

      10.1016/j.celrep.2018.11.022

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 連合学習に必要な感覚情報のグリア細胞による伝達機構2021

    • Author(s)
      宮下知之
    • Organizer
      認知症学会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 連合学習に必要な感覚情報のグリア細胞による伝達機構2020

    • Author(s)
      宮下知之
    • Organizer
      第9回都医学研シンポジウム
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Vesicular exocytosis of glutamate from ensheathing glia transmits aversive information required for associative conditioning in Drosophila2019

    • Author(s)
      Tomoyuki Miyashita, Kyohei Mikami, Kentaro Endo, Takaaki Miyaji, Sawako Moriyama, Kotaro Konno, Yoshinori Moriyama, Masahiko Watanabe, Minoru Saitoe
    • Organizer
      第42回日本分生生物学会年会
    • Related Report
      2019 Research-status Report
  • [Presentation] Vesicular exocytosis of glutamate from ensheathing glia transmits aversive information required for associative conditioning in Drosophila2019

    • Author(s)
      Tomoyuki Miyashita, Kyohei Mikami, Kentaro Endo, Takaaki Miyaji, Sawako Moriyama, Kotaro Konno, Yoshinori Moriyama, Masahiko Watanabe, Minoru Saitoe
    • Organizer
      第42回日本神経科学大会
    • Related Report
      2019 Research-status Report
  • [Presentation] ショウジョウバエを用いた行動学 ~匂い嫌悪学習を中心に~2019

    • Author(s)
      宮下知之
    • Organizer
      第31回日本行動神経内分泌研究会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 神経膠細胞の新しい機能2019

    • Author(s)
      宮下知之
    • Organizer
      第12回分子高次機能研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] グリアのグルタミン酸小胞放出はショウジョウバエの連合学習に必要な嫌悪情報を伝達する2018

    • Author(s)
      宮下知之 齊藤実
    • Organizer
      新学術領域班会議
    • Related Report
      2018 Research-status Report
  • [Presentation] Vesicular glutamate release from ensheathing glial transmits electric shock information to the mushroom bodies during olfactory conditioning in Drosophila2018

    • Author(s)
      Tomoyuki Miyashita, Kanako Murakami, Takaaki Miyaji, Kyoko Ofusa, Emi Kikuchi, Junjiro Horiuchi, Yoshinori Moriyama, Minoru Saitoe
    • Organizer
      第41回 日本神経科学大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Vesicular glutamate release from enshathing glia transmits punishment required for aversive associative conditioning in Drosophila.2018

    • Author(s)
      Tomoyuki Miyashita and Minoru Saitoe
    • Organizer
      第40回日本神経科学大会
    • Related Report
      2017 Research-status Report
  • [Presentation] グリアからのグルタミン酸開口放出の役割2018

    • Author(s)
      宮下知之
    • Organizer
      分子高次機能研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] Glial vesicular release of glutamate transmits aversive information required for aversive associative conditioning in Drosophila.2018

    • Author(s)
      Tomoyuki Miyashita and Minoru Saitoe
    • Organizer
      新学術領域班会議
    • Related Report
      2017 Research-status Report
  • [Remarks] 東京都医学総合研究所 学習・記憶プロジェクト

    • URL

      http://www.igakuken.or.jp/memory/

    • Related Report
      2019 Research-status Report
  • [Remarks] 反復学習が記憶を蓄える神経細胞集団を形成するメカニズムを解明

    • URL

      http://www.igakuken.or.jp/topics/2018/1204.html

    • Related Report
      2018 Research-status Report
  • [Remarks] 反復学習が記憶を蓄える神経細胞集団を形成するメカニズムを解明

    • URL

      http://www.igakuken.or.jp/public/news/033/cont2.html

    • Related Report
      2018 Research-status Report

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Published: 2017-04-28   Modified: 2022-01-27  

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