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

Development of a novel method for live cell imaging of intracellular and extracellular structures in brain tissue

Research Project

Project/Area Number 21K19305
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 46:Neuroscience and related fields
Research InstitutionNiigata University

Principal Investigator

Nozumi Motohiro  新潟大学, 医歯学系, 講師 (00420323)

Co-Investigator(Kenkyū-buntansha) 本多 敦子  新潟大学, 医歯学系, 特任助教 (40467072)
Project Period (FY) 2021-07-09 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2022: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2021: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Keywords成長円錐 / 超解像顕微鏡 / SUSHI / COSHI / アクチン / ミトコンドリア / 細胞内外ライブイメージング / オルガネラ / 細胞骨格 / 超解像陰影法
Outline of Research at the Start

脳研究における蛍光イメージング解析は、特定の細胞や分子だけを蛍光標識で可視化しており、暗闇に存在する他の細胞、オルガネラとの相互作用を見逃している。木を見て森を見ずの古典的手法からの脱却を目指し、本研究は脳組織の微細構造からオルガネラ間の相互作用まで、細胞内外を網羅的かつ同時にライブ撮影できる技術を開発する。

Outline of Final Research Achievements

Super-resolution shadow imaging (SUSHI) enables the acquisition of shadow images of brain tissue, including synapses, through fluorescent labeling of the extracellular space. In this study, we applied the principles of SUSHI to visualize intracellular structures, aiming to simultaneously image both intracellular and extracellular structures in living brain tissue. By employing this approach, the shadow imaging of growth cones, which are axonal tips, revealed a novel relationship between mitochondrial morphology and the actin cytoskeleton during nerve growth processes. To achieve this, a red fluorescent protein was introduced into fetal mouse brains through in utero electroporation. Through this method, we successfully captured intracellular structures of the neuron in the shadow images generated from red fluorescence signals. We also observed a growth cone extending its filopodium towards a neighboring cell, followed by cell-cell contact using our imaging technique.

Academic Significance and Societal Importance of the Research Achievements

本研究により、2種類の蛍光画像から、脳組織において軸索伸長や遊走で形態変化する神経細胞とその周りを取り囲む多様な細胞群との相互作用を捉えつつ、同時にオルガネラなどの細胞内構造の変化を可視化することが可能になった。今回試みた細胞内構造の可視化は神経細胞に限らず、線維芽細胞やグリオーマ株細胞にも適応できたことから、神経細胞からグリア細胞まで幅広い細胞種での細胞内外ライブイメージングに応用できると思われる。このライブイメージング法は脳の形成過程だけでなく、病態脳における様々な細胞集団の細胞内外動態を網羅的に可視化するツールとしての応用が期待される。

Report

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

    (6 results)

All 2022 2021

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

  • [Journal Article] JNK1-Dependent Phosphorylation of GAP-43 Serine 142 is a Novel Molecular Marker for Axonal Growth2022

    • Author(s)
      Okada M, Kawagoe Y, Takasugi T, Nozumi M, Ito Y, Fukusumi H, Kanemura Y, Fujii Y, Igarashi M.
    • Journal Title

      Neurochem Res

      Volume: 印刷中 Issue: 9 Pages: 2668-2682

    • DOI

      10.1007/s11064-022-03580-6

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Coactosin Promotes F-Actin Protrusion in Growth Cones Under Cofilin-Related Signaling Pathway2021

    • Author(s)
      Hou Xubin、Nozumi Motohiro、Nakamura Harukazu、Igarashi Michihiro、Sugiyama Sayaka
    • Journal Title

      Frontiers in Cell and Developmental Biology

      Volume: 9 Pages: 660349-660349

    • DOI

      10.3389/fcell.2021.660349

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Visualization of various organelle dynamics by super-resolution shadow imaging of intracellular space2022

    • Author(s)
      Motohiro Nozumi, Michihiro Igarashi, U. Valentin Nagerl
    • Organizer
      NEURO2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] Three-dimensionally extending filopodia of neuronal growth cones, are associated with the localization of an axon guidance receptor2022

    • Author(s)
      Motohiro Nozumi, Michihiro Igarashi
    • Organizer
      Cell Bio 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 非接着性のフィロポディアは拡散性ガイダンス因子の濃縮に関係する2021

    • Author(s)
      野住素広、五十嵐道弘
    • Organizer
      第44回日本神経科学大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 超解像陰影法による複数オルガネラの同時可視化2021

    • Author(s)
      野住素広、五十嵐道弘
    • Organizer
      第64回日本神経化学会大会
    • Related Report
      2021 Research-status Report

URL: 

Published: 2021-07-13   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi