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Visualization of cortical module formation by longitudinal in vivo neuron tracking

Research Project

Project/Area Number 21K15199
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 46020:Anatomy and histopathology of nervous system-related
Research InstitutionNational Institute of Genetics

Principal Investigator

Nakagawa Naoki  国立遺伝学研究所, 遺伝形質研究系, 助教 (30835426)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2022: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2021: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords大脳皮質 / 神経回路形成 / in vivoイメージング / バレル皮質 / 単一細胞動態追跡
Outline of Research at the Start

大脳皮質感覚野の第4層にはモジュール(単位回路)の並列構造が存在し、感覚情報の高解像度での識別を可能にする。モジュールごとの特異的な回路配線は出生直後には見られず、生後発達期に末梢から伝わる神経入力を受けて構築される。本研究では、第4層神経細胞がモジュールごとにクラスターを形成するマウス体性感覚野バレル回路の特長を利用して、個々の神経細胞が所属すべきモジュールを決定する過程を“細胞の動き”から読み解く。生体イメージングによる細胞動態追跡と神経活動操作、機能的スクリーニングを駆使して、第4層神経細胞の移動パターンとその神経活動依存的な制御機構を解明し、大脳皮質並列回路の構築機構を明らかにする。

Outline of Final Research Achievements

Layer 4 neurons in the mammalian sensory neocortex form functional modules, which enable high-resolution sensory information processing. To understand the cellular dynamics underlying the module formation during postnatal development, we aimed to establish an in vivo imaging system for tracking single neuron behaviors, using the barrel module in the mouse somatosensory cortex as a model. We have developed a long-term in vivo imaging system to track the movement of single layer 4 neurons during module formation in the neonatal mouse brain, as well as an image analysis pipeline to distinguish the migration of individual neurons from developmental cortical expansion.

Academic Significance and Societal Importance of the Research Achievements

大脳皮質感覚野における機能的モジュールは、感覚情報の混線を防ぎ、高解像度な情報識別を可能にする。したがって、モジュールの構築機序を解明することにより、新生児期の神経活動依存的な脳機能発達、およびその破綻が引き起こす感覚失調の、神経回路レベルでの理解進展が望める。本研究で開発した神経細胞動態追跡のための生体イメージング技術およびデータ解析法は、生後発達期の大脳皮質内で個々の神経細胞が個別のモジュールに適切に組み込まれていく仕組みの解明に貢献することが期待される。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (8 results)

All 2023 2022 2021

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

  • [Journal Article] Golgi polarity shift instructs dendritic refinement in the neonatal cortex by mediating NMDA receptor signaling2023

    • Author(s)
      Nakagawa Naoki、Iwasato Takuji
    • Journal Title

      Cell Reports

      Volume: 42 Issue: 8 Pages: 112843-112843

    • DOI

      10.1016/j.celrep.2023.112843

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Golgi polarity shift instructs thalamocortical module formation in the neonatal barrel cortex2023

    • Author(s)
      Naoki Nakagawa
    • Organizer
      第38回熊本医学・生物科学国際シンポジウム「機能的脳神経回路システムの構築メカニズム」
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Direct visualization of cortical column formation by longitudinal in vivo neuron tracking2023

    • Author(s)
      Naoki Nakagawa, Shingo Nakazawa, Takuji Iwasato
    • Organizer
      第46回日本神経科学大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Activity-regulated positioning of the Golgi apparatus facilitates dendritic refinement in the developing mouse barrel cortex2022

    • Author(s)
      Naoki Nakagawa, Takuji Iwasato
    • Organizer
      第45回 日本神経科学大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Golgi apparatus polarity shift facilitates dendritic refinement in the neonatal barrel cortex2022

    • Author(s)
      Naoki Nakagawa, Takuji Iwasato
    • Organizer
      Development and Plasticity of the Brain
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Golgi apparatus polarization facilitates dendritic refinement in the developing neocortex2022

    • Author(s)
      Naoki Nakagawa, Takuji Iwasato
    • Organizer
      Neuroscience 2022 (Society for Neuroscience)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Developmental dynamics of the Golgi apparatus regulate dendritic refinement in the mouse barrel cortex2021

    • Author(s)
      Naoki Nakagawa, Takuji Iwasato
    • Organizer
      第44回 日本神経科学大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Activity-regulated positioning of the Golgi apparatus facilitates dendritic refinement in the neonatal mouse barrel cortex2021

    • Author(s)
      Naoki Nakagawa
    • Organizer
      Symposium "Circuit Construction in the Mammalian Brain”
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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