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Neuronal axon guidance regulated by calcium signaling in the Golgi apparatus

Research Project

Project/Area Number 19K06669
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 44010:Cell biology-related
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Tojima Takuro  国立研究開発法人理化学研究所, 光量子工学研究センター, 上級研究員 (00373332)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsゴルジ体 / カルシウム / 神経回路形成 / 成長円錐 / 生細胞イメージング / 軸索ガイダンス
Outline of Research at the Start

ゴルジ体はタンパク質の翻訳後修飾や選別輸送を司る膜交通のキーステーションである。小胞体やミトコンドリアと同様に、ゴルジ体には高濃度Ca2+が内蔵されているが、その役割については不明の点が多い。本研究では、特に神経回路形成時の神経軸索ガイダンスに焦点を当て、ゴルジ体Ca2+シグナルが生命機能に果たす役割を解明する。具体的には、ゴルジ体内腔Ca2+が積荷タンパク質の糖鎖修飾や選別輸送を制御したり、細胞質Ca2+シグナル発生のための供給源として働く可能性などについて検証してゆく。

Outline of Final Research Achievements

The Golgi apparatus is a key station in membrane traffic, which mediates post-translational modification and sorting of cargo proteins. Like the endoplasmic reticulum and mitochondria, the Golgi contains high concentrations of calcium, but its role remains unclear. In the present study, we focused on the role of Golgi calcium signaling in biological functions, with a particular focus on neuronal axon guidance during neuronal network formation. Specifically, we tried to examine the possibility that Golgi lumenal calcium regulates glycosylation and sorting of cargo proteins, and acts as a source for generation of cytosolic calcium signals.

Academic Significance and Societal Importance of the Research Achievements

ゴルジ体のカルシウム調節機能異常は、Hailey-Hailey disease等の皮膚疾患、心臓病等の循環器系疾患に加えて、アルツハイマー病、筋萎縮性側索硬化症(ALS)、ハンチントン病等の各種神経変性疾患の原因になる可能性が指摘されており、本研究の成果は、将来的にこれら神経系疾患の発症機構・病態解明とその治療戦略構築への応用へと発展できる可能性がある。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (15 results)

All 2022 2021 2020 2019 Other

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (10 results) (of which Invited: 6 results) Remarks (3 results)

  • [Journal Article] Super-resolution live imaging of cargo traffic through the Golgi apparatus in mammalian cells2022

    • Author(s)
      Tojima T, Miyashiro D, Kosugi Y Nakano A
    • Journal Title

      Methods in Molecular Biology

      Volume: in press

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spatiotemporal dissection of the trans-Golgi network in budding yeast2019

    • Author(s)
      Takuro Tojima, Yasuyuki Suda, Midori Ishii, Kazuo Kurokawa, Akihiko Nakano
    • Journal Title

      Journal of Cell Science

      Volume: 132 Issue: 15 Pages: 231159-231159

    • DOI

      10.1242/jcs.231159

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Membrane traffic in the neuronal growth cone2021

    • Author(s)
      Takuro Tojima
    • Organizer
      Research Meeting on Cell Dynamics
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] パスポート配列の付加による糖タンパク質の特異的な糖鎖修飾のメカニズム2021

    • Author(s)
      山田梨乃、矢木宏和、戸島拓郎、青木一洋、本田怜奈、矢木真穂、足達俊吾、加藤晃一
    • Organizer
      第40回日本糖質学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 出芽酵母におけるトランスゴルジ網の槽成熟ダイナミクス2021

    • Author(s)
      戸島拓郎
    • Organizer
      第22回植物オルガネラワークショップ
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 神経成長円錐における膜交通ダイナミクス2020

    • Author(s)
      戸島拓郎
    • Organizer
      第43回日本分子生物学会年会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Dynamics of membrane traffic in the neuronal growth cone revealed by super-resolution live imaging2019

    • Author(s)
      戸島拓郎
    • Organizer
      理研シンポジウム 第7回「光量子工学研究」
    • Related Report
      2019 Research-status Report
  • [Presentation] ゴルジ体からトランスゴルジ網への槽成熟ダイナミクス2019

    • Author(s)
      戸島拓郎
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 神経成長円錐における膜交通の可視化解析2019

    • Author(s)
      戸島拓郎
    • Organizer
      第3回オルガネラゾーン研究会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] The identity of the trans-Golgi network revealed by super-resolution live imaging2019

    • Author(s)
      Takuro Tojima, Yasuyuki Suda, Midori Ishii, Kazuo Kurokawa, and Akihiko Nakano
    • Organizer
      Molecular Membrane Biology Gordon Research Conference
    • Related Report
      2019 Research-status Report
  • [Presentation] Visualization of membrane traffic in the neuronal growth cone2019

    • Author(s)
      Takuro Tojima
    • Organizer
      RIKEN symposium: Cutting edge of membrane traffic
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] トランスゴルジ網形成の時空間ダイナミクス2019

    • Author(s)
      戸島拓郎,須田恭之,石井みどり,黒川量雄,中野明彦
    • Organizer
      第19回日本蛋白質科学会年会・第71回日本細胞生物学会大会合同年次大会
    • Related Report
      2019 Research-status Report
  • [Remarks] 戸島拓郎の研究者個人ホームページ

    • URL

      http://tojimat.web.fc2.com/

    • Related Report
      2021 Annual Research Report 2020 Research-status Report 2019 Research-status Report
  • [Remarks] 生細胞超解像イメージング研究チーム

    • URL

      http://sclim.riken.jp/

    • Related Report
      2021 Annual Research Report
  • [Remarks] 理化学研究所光量子工学研究センター生細胞超解像イメージング研究チーム

    • URL

      http://sclim.riken.jp/

    • Related Report
      2020 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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