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Roles of spike timing-dependent plasticity in neural formation during development

Research Project

Project/Area Number 17K07057
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Neurophysiology / General neuroscience
Research InstitutionJikei University of Health Care Sciences (2021)
Osaka University (2017-2020)

Principal Investigator

Kimura Fumitaka  滋慶医療科学大学, 医療科学部, 教授 (00202044)

Co-Investigator(Kenkyū-buntansha) 伊丹 千晶  埼玉医科大学, 医学部, 講師 (90392430)
Project Period (FY) 2017-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords大脳皮質 / 円柱構造 / カンナビノイド / 4層細胞 / 活動依存的 / 発達期 / 臨界期 / 円柱状投射 / 隣接カラム / スパイクタイミング依存性可塑性 / 4層 / 2/3層 / 自発発火 / 臨界期可塑性 / バレル皮質 / 4層-2/3層 / 2アラキドノイルグリセロール / 刈り込み / コラム状投射 / 視床皮質投射 / 軸索投射
Outline of Final Research Achievements

The neocortex is highly evolved and thought to play the highest function in the mammalian brain, which includes sensory, motor and association cortex. Although these functions are extremely diverse, these corteces have an important morphological feature, that is columnar organization. In spite of its importance, how such columnar structure is made is mostly unknown. In the present study, we showed that endocannabinoid (cannabinoid is the active ingredient of marijana) plays a key role in constructing this sturacture during development, by pruning the axons crossing the columns in an activity dependent manner, operating spike timing-dependent plasticity, or STDP.

Academic Significance and Societal Importance of the Research Achievements

大脳皮質の共通構造である円柱状構造の形成メカニズムはこれまで殆ど全く分かっていなかった。これを始めて明らかにした事の意義は重大である。同時に、この円柱状構造の形成に大麻の有効成分であるカンナビノイドの受容体が関与していることの意味も極めて重大である。我々の結果は、成長期にカンナビノイドを摂取すると大脳皮質の円柱構造が正確に形成されないだけでなく、皮質4層細胞の軸索が刈り込まれてしまう可能性が極めて大きいことを示している。

Report

(6 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (16 results)

All 2022 2020 2019 2018 2017 Other

All Int'l Joint Research (4 results) Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (10 results) (of which Int'l Joint Research: 3 results)

  • [Int'l Joint Research] Indiana University(米国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Indiana University(米国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Indiana University(米国)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] Indiana University(米国)

    • Related Report
      2017 Research-status Report
  • [Journal Article] A hypothetical model concerning how spike timing-dependent plasticity contributes to the neural circuit formation and the initiation of critical period in barrel cortex2019

    • Author(s)
      Fumitaka Kimura, Chiaki Itami
    • Journal Title

      Journal of Neuroscience

      Volume: 39 Issue: 20 Pages: 3784-3791

    • DOI

      10.1523/jneurosci.1684-18.2019

    • Related Report
      2019 Research-status Report 2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The a2A-adrenoceptor suppresses excitatory synaptic transmission to both excitatory and inhibitory neurons in layer 4 barrel cortex2017

    • Author(s)
      Minoru Ohshima, Chiaki Itami, Fumitaka Kimura
    • Journal Title

      Journal of Physiology (London)

      Volume: 595 Issue: 22 Pages: 6923-6937

    • DOI

      10.1113/jp275142

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] Endocannabinoid-dependent formation of columnar axonal projection of layer 4 neurons in the mouse cerebral cortex2022

    • Author(s)
      C. Itami, N. Uesaka, J-Y Huang, H-C Lu, K. Sakimura M. Kano, F. Kimura
    • Organizer
      第99回日本生理学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Developmental changes in spike sequencea od L4, L2/3 neurons in response to whisker stimulations in the rat barrel cortex2020

    • Author(s)
      Fumitaka Kimura, Hiroshi Tamura
    • Organizer
      第97回日本生理学会大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Spike activity of single neurons in sensory cortex are more related to population spiking activity of nearby neurons than to sensory stimulus2019

    • Author(s)
      Ryutaro Ozaki, Fumitaka Kimura, Hiroshi Tamura
    • Organizer
      第42回日本神経科学学会大会
    • Related Report
      2019 Research-status Report
  • [Presentation] The enndocannabinoid, 2-arachidonoylglycerol is required for neural circuit formation in the developing barrel cortex2018

    • Author(s)
      Chiaki Itami, Kenji Sakimura, Masanobu Kano, Fumitaka Kimura
    • Organizer
      FENS Forum 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] The a2A adrenoceptor suppresses excitatory synaptic transmission to both excitatory and inhibitory neurons in layer 4 barrel cortex2018

    • Author(s)
      Fumitaka Kimura, Minoru Ohshima, Chiaki, Itami
    • Organizer
      第95回日本生理学会大会
    • Related Report
      2018 Research-status Report 2017 Research-status Report
  • [Presentation] Effects of exogenously administered cannabinoid on axonal projection of layer 4 neurons in the mouse barrel cortex2018

    • Author(s)
      Chiaki Itami, Jui-Yen Huang, Hui-Chen Lu, Fumitaka Kimura
    • Organizer
      48th Annual Meeting of Society form Neuroscience
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effects of cannabinoid agonists on axonal projection of layer 4 neurons in the developping mouse barrel cortex2018

    • Author(s)
      Chiaki Itami, Kenji Sakimura, Masanobu Kano, Fumitaka Kimura
    • Organizer
      第41回神経科学学会
    • Related Report
      2018 Research-status Report
  • [Presentation] Effects of cannabinoid agonists on axonal projection of layer 4 neurons in the developing mouse barrel cortex2018

    • Author(s)
      Chiaki Itami, Jui-Yen Huang, Hui-Chen Lu, Fumitaka Kimura
    • Organizer
      第41回神経科学学会
    • Related Report
      2017 Research-status Report
  • [Presentation] The endocannabinoid 2-arachidonoylglycerol is required for neuronal circuit formation in the developing barrel cortex2018

    • Author(s)
      Chiaki Itami, Kenji Sakimura, Masanobu Kano, Fumitaka Kimura
    • Organizer
      FENS Forum 2018
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Enndocannabinoido, 2-arachidonoylglycerol plays important roles during neural circuit formation in the mouse barrel cortex2017

    • Author(s)
      Fumitaka Kimura, Chiaki Itami, Kenji Sakimura, Masanobu Kano
    • Organizer
      第40回神経科学学会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2023-01-30  

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