• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Developmental systems establishing functional spatial configuration of dendrites

Research Project

Project/Area Number 20H03352
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 46020:Anatomy and histopathology of nervous system-related
Research InstitutionShimane University

Principal Investigator

Kuwako Ken-ichiro  島根大学, 学術研究院医学・看護学系, 准教授 (30468475)

Co-Investigator(Kenkyū-buntansha) 濱 徳行  島根大学, 学術研究院医学・看護学系, 助教 (60422010)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2023: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2022: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2021: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2020: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Keywords樹状突起 / 発生 / 細胞骨格制御 / 形態形成 / 空間配置
Outline of Research at the Start

本研究では、小脳プルキンエ細胞をモデルとして、その樹状突起の特徴な空間配置を確立する発生システムを解明する。さらに、そこで得られた知見をもとに、プルキンエ細胞の樹状突起が整列してつくる特殊な受容野構造が小脳機能において重要な役割をもつのかどうかを検証する。これにより、ニューロンの樹状突起の空間配置のしくみとその機能的意義を理解することを目指す。

Outline of Final Research Achievements

In this study, we investigated the regulatory mechanisms of dendritic spatial configuration in cerebellar Purkinje cells, which have a single large, intricately branched dendrite. Based on various analyses focusing on cytoskeletal regulators, we first found that the actin regulator Arp2/3 and its activator N-WASP are highly expressed in developing Purkinje cells. Moreover, functional inhibition of the N-WASP-Arp2/3 pathway caused an early arrest of the dendritic maturation process, resulting in marked hypoplasia without the establishment of a single characteristic primary dendrite. These results indicate that the N-WASP-Arp2/3 pathway plays a pivotal role in the regulation of dendritic spatial configuration in Purkinje cells.

Academic Significance and Societal Importance of the Research Achievements

本研究は樹状突起の基本型をつくるために必須の分子機構を解明し、これまで不明な点が多かった樹状突起の空間配置制御システムの理解に貢献したことから大きな意義をもつ。今後、本研究で得られた知見をさまざまな種類のニューロンで検証していくこと、またN-WASP-Arp2/3シグナルがどのようなメカニズムで樹状突起を制御しているのかを明らかにしていくことで、“脳をつくる”しくみの理解がさらに進むと期待される。また、本研究で得られた知見は、将来の神経再生医療において移植ニューロンの「かたち」を制御してより機能的な神経回路を再建するために重要になると考えられる。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (13 results)

All 2023 2022 2021 2020

All Journal Article (5 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (8 results) (of which Invited: 1 results)

  • [Journal Article] N-WASP-Arp2/3 signaling controls multiple steps of dendrite maturation in Purkinje cells in vivo.2022

    • Author(s)
      Hasegawa K, Matsui TK, Kondo J and Kuwako KI
    • Journal Title

      Development

      Volume: 149 Issue: 23

    • DOI

      10.1242/dev.201214

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Molecular mechanisms regulating the spatial configuration of neurites.2022

    • Author(s)
      Hasegawa K and Kuwako K
    • Journal Title

      Seminars in Cell and Developmental Biology

      Volume: - Pages: 103-114

    • DOI

      10.1016/j.semcdb.2022.02.015

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Vascularization of human brain organoids2021

    • Author(s)
      Matsui TK, Tsuru Y, Hasegawa K, Kuwako KI
    • Journal Title

      Stem Cells

      Volume: 0 Issue: 8 Pages: 0-0

    • DOI

      10.1002/stem.3368

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The polymicrogyria-associated GPR56 promoter preferentially drives gene expression in developing GABAergic neurons in common marmosets2020

    • Author(s)
      Murayama AY, Kuwako KI, Okahara J, Bae BI, Okuno M, Mashiko H, Shimogori T, Walsh CA, Sasaki E, Okano H
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 21516-21516

    • DOI

      10.1038/s41598-020-78608-4

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Challenges in Modeling Human Neural Circuit Formation via Brain Organoid Technology2020

    • Author(s)
      Matsui TK, Tsuru Y, Kuwako KI
    • Journal Title

      Frontiers in Cellular Neuroscience

      Volume: 14 Pages: 607399-607399

    • DOI

      10.3389/fncel.2020.607399

    • NAID

      120007002189

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] N-WASP-Arp2/3 signaling is required for the establishment of a single stem dendrite of Purkinje cells in vivo2023

    • Author(s)
      長谷川孝一、松井健、近藤純平、桑子賢一郎
    • Organizer
      第46回日本神経科学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Regulation of plasticity of axon initial segment by LINC complex2023

    • Author(s)
      長谷川孝一、松井健、近藤純平、濱徳行、桑子 賢一郎
    • Organizer
      第100回日本生理学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 核を起点とした軸索制御機構による自閉スペクトラム症の病態解明2023

    • Author(s)
      桑子 賢一郎
    • Organizer
      川野小児医学奨励財団 第33回 研究成果発表会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] LINC complex regulates the plasticity of axon initial segment2022

    • Author(s)
      Hasegawa K. Matsui TK, Kondo J, Shoji S, Hama N, Kuwako K
    • Organizer
      日本生理学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Analysis of the synaptic connections in the developing preBotzinger complex2021

    • Author(s)
      Hama N, Kato T, Yokota S, Hasegawa K, Kuwako K
    • Organizer
      日本神経科学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Analysis of the nucleoskeletal and cytoskeletal-anchoring protein Nesprin-1 on the axon initial segment for neuronal polarity and plasticity2021

    • Author(s)
      Hasegawa K. Matsui TK, Kondo J, Ishihara T, Kuwako K
    • Organizer
      日本神経科学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] i-GONAD法によるチロシナーゼ遺伝子ヒマラヤ変異マウスの作製2021

    • Author(s)
      雪澤瞳、長谷川孝一、桑子 賢一郎
    • Organizer
      西日本医学生学術フォーラム2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] ヒト脊髄オルガノイドの作成2021

    • Author(s)
      都留佑一朗、松井健、長谷川孝一、桑子 賢一郎
    • Organizer
      西日本医学生学術フォーラム2021
    • Related Report
      2021 Annual Research Report

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi