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Regulatory mechanism for the uniform distribution of stationary mitochondria in axons

Research Project

Project/Area Number 20K06889
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 46020:Anatomy and histopathology of nervous system-related
Research InstitutionUniversity of Fukui

Principal Investigator

Konishi Yoshiyuki  福井大学, 学術研究院工学系部門, 教授 (00382838)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords軸索 / ミトコンドリア / ATP / 軸索輸送 / 神経
Outline of Research at the Start

脳内の信号が正常に伝達されるためには、神経細胞の軸索の形態が維持されることが必須である。停止型ミトコンドリアは軸索内に散在し、軸索維持に必要なATPを局所的に供給することから、効率的なATP供給のため、その分布を調節する未知のシステムが存在すると予想される。これまでの研究で、停止型ミトコンドリアが移動型に転換しながら、軸索内で一様性の分布を維持することを明らかにした。本研究はその制御機構の解明を目指すものであり、その成果は軸索機能の異常を伴う様々な神経疾患についての新たな病態モデルの構築や診断法の確立につながる可能性が期待される。

Outline of Final Research Achievements

To ensure proper transmission of signals in the brain, the morphology of neuronal axons needs to be maintained. Within these axons, stationary mitochondria play a crucial role in sustaining axon morphology by locally supplying necessary ATP. Thus, it was hypothesized that there is a system regulating the distribution of stationary mitochondria. This study revealed that in axons devoid of structures like synapses or myelin sheaths, stationary mitochondria are not randomly distributed but rather evenly spread through a mechanism where they regulate each other's movement via ATP produced, thereby ensuring uniform distribution.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果により、軸索形態を維持する上で必要な新しい細胞内システムが明かとなった。この新規の細胞内システムは、軸索内の効率的なエネルギー供給を可能にし、軸索の形態維持に非常に重要な役割を担うと考えられる。このような細胞内システムの破綻は、軸索機能の異常を伴う様々な神経疾患の進行に関わる可能性があり、本研究で得られた知見は、これまでにない新たな病態モデルの構築や診断法の確立につながる可能性が期待される。

Report

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

    (14 results)

All 2024 2023 2022 2021 2020 Other

All Journal Article (6 results) (of which Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (4 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results) Remarks (4 results)

  • [Journal Article] Active thermodynamic force driven mitochondrial alignment2024

    • Author(s)
      Masashi K. Kajita, Yoshiyuki Konishi, Tetsuhiro S. Hatakeyama
    • Journal Title

      PHYSICAL REVIEW RESEARCH

      Volume: 6 Issue: 2

    • DOI

      10.1103/physrevresearch.6.l022024

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 3-nitrotyrosine shortens axons of a non-dopaminergic neuron by inhibiting mitochondrial motility2024

    • Author(s)
      Hirai M, Suzuki K, Kassai Y, Konishi Y
    • Journal Title

      bioRxiv

      Volume: -

    • DOI

      10.1101/2024.05.09.593299

    • Related Report
      2023 Annual Research Report
    • Open Access
  • [Journal Article] A model for generating differences in microtubules between axonal branches depending on the distance from terminals.2023

    • Author(s)
      Imanaka Chiaki,Shimada Satoshi,Ito Shino,Kamada Marina,Iguchi Tokuichi,Konishi Yoshiyuki
    • Journal Title

      Brain research

      Volume: 1799 Pages: 148166-148166

    • DOI

      10.1016/j.brainres.2022.148166

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Intermitochondrial signaling regulates the uniform distribution of stationary mitochondria in axons2022

    • Author(s)
      Matsumoto Nozomu、Hori Ikuma、Kajita Masashi K.、Murase Tomoya、Nakamura Wataru、Tsuji Takahiro、Miyake Seiji、Inatani Masaru、Konishi Yoshiyuki
    • Journal Title

      Molecular and Cellular Neuroscience

      Volume: 119 Pages: 103704-103704

    • DOI

      10.1016/j.mcn.2022.103704

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Neuroprotective effects of aromatic turmerone on activity deprivation-induced apoptosis in cerebellar granule neurons.2020

    • Author(s)
      Saga Y, Hatakenaka Y, Matsumoto M, Yoshioka Y, Matsumura S, Zaima N, Konishi Y.
    • Journal Title

      NeuroReport

      Volume: 31 Issue: 18 Pages: 1302-1307

    • DOI

      10.1097/wnr.0000000000001551

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Intermitochondrial signaling regulates the uniform distribution of stationary mitochondria in axons.2020

    • Author(s)
      Matsumoto N, Hori I, Murase T, Tsuji T, Miyake S, Inatani M, Konishi Y.
    • Journal Title

      bioRxiv

      Volume: -

    • DOI

      10.1101/2020.07.31.230250

    • Related Report
      2020 Research-status Report
  • [Presentation] 軸索内のミトコンドリアの分布・動態制御およびシナプス形成との関連2023

    • Author(s)
      小西慶幸、堀生実、松本望、梶田真司、村瀬朋弥、中村航、辻隆宏、三宅誠司、稲谷大
    • Organizer
      第66回日本神経化学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] SAGによるShh経路活性化を介した顆粒細胞前駆細胞の培養とその応用2023

    • Author(s)
      福本大貴、小西慶幸
    • Organizer
      第66回日本神経化学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] バイオイメージングによる神経細胞の形態調節機構の解析2021

    • Author(s)
      小西 慶幸
    • Organizer
      日本農芸化学会中部支部 第189回例会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Intracellular systems regulating the dynamics and distributions of axonal mitochondria and presynaptic vesicles2021

    • Author(s)
      Y. Konishi I. Hori, H. Kita and M. Kajita
    • Organizer
      14th International Symposium on Nanomedicine
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Remarks] 福井大学 生命システム科学研究室

    • URL

      https://sites.google.com/view/llss-uf

    • Related Report
      2023 Annual Research Report
  • [Remarks] 福井大学生命システム科学研究室

    • URL

      https://sites.google.com/view/llss-uf

    • Related Report
      2022 Research-status Report
  • [Remarks] 福井大学研究者総覧

    • URL

      http://t-profile.ad.u-fukui.ac.jp/profile/ja.da3bdb82a9d06347.html

    • Related Report
      2020 Research-status Report
  • [Remarks] 分子細胞神経科学研究室

    • URL

      https://sites.google.com/site/konishilabneuron/

    • Related Report
      2020 Research-status Report

URL: 

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

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