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Super resolution imaging of glutamate receptors during synaptic plasticity

Research Project

Project/Area Number 18K14817
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 46010:Neuroscience-general-related
Research InstitutionKyoto University

Principal Investigator

Tanaka Hiromitsu  京都大学, 理学研究科, 助教 (30705447)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsグルタミン酸受容体 / 長期増強 / 長期抑圧 / 超解像顕微鏡 / 全反射顕微鏡 / シナプス小胞 / アミロイドベータ / シナプス接着分子 / シナプス可塑性 / 神経情報伝達 / 海馬 / 全反射蛍光顕微鏡 / 超解像イメージング / 超解像顕微鏡法
Outline of Final Research Achievements

In order to elucidate the mechanism of synaptic plasticity, a phenomenon that changes the efficiency of neuronal information transmission at synapses, we have developed a technique for imaging synaptic protein with ultra-high resolution in our original experimental system. We applied it to the study of long-term potentiation and long-term depression, which are representatives of synaptic plasticity. As a result, we showed how neurotransmitter receptors are exocytosed or endocytosed during long-term depression, and what kinds of receptors' abnormal movement suppress the expression of long-term potentiation. We also analyzed the location of release of synaptic vesicles from a presynaptic terminal during synaptic transmission.

Academic Significance and Societal Importance of the Research Achievements

シナプス可塑性は記憶・学習の細胞基盤と考えられており、これまで多くの研究がなされてきた。本研究では、研究代表者の独自の実験系と超解像顕微鏡法の組み合わせを実証し、受容体の動態を解析することでシナプス可塑性の発現機構に新たな知見と概念を提供できた。また、シナプス病変時における受容体の動態異常を解析することで、シナプス可塑性の発現抑制機構に関する知見も提供できた。これらの成果より、本研究は記憶・学習が成立する基礎過程の解明、及びシナプス伝達異常に起因する神経疾患の病態解明に貢献した。

Report

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

    (15 results)

All 2021 2020 2019 2018 Other

All Journal Article (6 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 6 results,  Open Access: 2 results) Presentation (7 results) (of which Int'l Joint Research: 2 results,  Invited: 3 results) Remarks (2 results)

  • [Journal Article] Boltzmann Thermometry in Cr3+‐Doped Ga2O3 Polymorphs: The Structure Matters!2021

    • Author(s)
      Back Michele、Ueda Jumpei、Nambu Hiroshi、Fujita Masami、Yamamoto Akira、Yoshida Hisao、Tanaka Hiromitsu、Brik Mikhail G.、Tanabe Setsuhisa
    • Journal Title

      Advanced Optical Materials

      Volume: - Issue: 9 Pages: 2100033-2100033

    • DOI

      10.1002/adom.202100033

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] シナプス機能素子の動態イメージング法を用いたシナプス病変及び伝達機構の解明2021

    • Author(s)
      田中洋光
    • Journal Title

      月刊細胞

      Volume: 53 Pages: 51-55

    • NAID

      40022470684

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Amyloid-β oligomers suppress subunit-specific glutamate receptor increase during LTP2019

    • Author(s)
      Hiroshi Tanaka, Daiki Sakaguchi, Tomoo Hirano
    • Journal Title

      Alzheimer’s & Dementia: Translational Research & Clinical Interventions

      Volume: 5 Issue: 1 Pages: 797-808

    • DOI

      10.1016/j.trci.2019.10.003

    • NAID

      120007006206

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 全反射顕微鏡を用いたシナプス関連分子の動態イメージング法の確立2019

    • Author(s)
      田中洋光
    • Journal Title

      Medical Science Digest

      Volume: 45 Pages: 430-433

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Suppression of AMPA Receptor Exocytosis Contributes to Hippocampal LTD2018

    • Author(s)
      Shumpei Fujii, Hiromitsu Tanaka, Tomoo Hirano
    • Journal Title

      Journal of Neuroscience

      Volume: 38 Issue: 24 Pages: 5523-5537

    • DOI

      10.1523/jneurosci.3210-17.2018

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Visualization of Synchronous or Asynchronous Release of Single Synaptic Vesicle in Active-Zone-Like Membrane Formed on Neuroligin-Coated Glass Surface2018

    • Author(s)
      Junichiro Funahashi, Hiromitsu Tanaka, Tomoo Hirano
    • Journal Title

      Frontiers in Cellular Neuroscience

      Volume: 12 Pages: 1-10

    • DOI

      10.3389/fncel.2018.00140

    • NAID

      120006478048

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] シナプス伝達時におけるシナプス小胞の取り込み形態の統合的把握2021

    • Author(s)
      田中洋光
    • Organizer
      第5回脳と心の研究会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Total internal reflection fluorescence microscopy in neuroscience2020

    • Author(s)
      Hiromitsu Tanaka
    • Organizer
      The Francis Crick Institute seminar
    • Related Report
      2019 Research-status Report
  • [Presentation] 全反射顕微鏡を用いたAMPA型グルタミン酸受容体の動態イメージング2019

    • Author(s)
      田中洋光、平野丈夫
    • Organizer
      生理研研究会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] シナプス小胞の開口放出及び再構築過程の可視化2019

    • Author(s)
      田中洋光
    • Organizer
      第4回脳と心の研究会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 全反射顕微鏡を用いたシナプス前終末とシナプス後膜研究2018

    • Author(s)
      田中洋光
    • Organizer
      第3回脳と心の研究会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Subunit-specific effects on AMPA-type glutamate receptors caused by amyloid beta oligomers during hippocampal long-term potentiation2018

    • Author(s)
      Hiromitsu Tanaka, Daiki Sakaguchi, Tomoo Hirano
    • Organizer
      Neuroscience 2018 (Society for Neuroscience)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] アミロイドベータによるサブユニット特異的なグルタミン酸受容体の動態異常2018

    • Author(s)
      田中洋光、坂口大輝、平野丈夫
    • Organizer
      第41回日本分子生物学会年会
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Remarks] シナプス研究から脳というスパコンへ辿り着け

    • URL

      https://www.pref.kyoto.jp/sangyo-sien/specialist/tanakahiromitu.html

    • Related Report
      2020 Annual Research Report
  • [Remarks] 所属研究室のホームページ

    • URL

      http://www.neurosci.biophys.kyoto-u.ac.jp/main.html

    • Related Report
      2018 Research-status Report

URL: 

Published: 2018-04-23   Modified: 2022-01-27  

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