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Imaging analysis of ER-mitochondria contact sites in living cells

Research Project

Project/Area Number 21K06149
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 InstitutionNagoya University

Principal Investigator

KOBAYASHI Takeshi  名古屋大学, 医学系研究科, 講師 (40402565)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsオルガネラ接触領域 / ダイナミクス / 可視化解析 / ミトコンドリア / 小胞体
Outline of Research at the Start

現在、様々な細胞活動において小胞体-ミトコンドリア接触領域(EMCSs)の役割の重要性が明らかにされてきているが、生細胞中でのEMCSsの定量やダイナミクスの解析は進んでいない。本研究では、 生きた細胞においてEMCSsを可視化解析し、EMCSsの形成や崩壊の過程の制御機構を解析し、ミトコンドリア機能におけるEMCSsの関与、特に、カルシウムイオン輸送の制御機構の分子基盤の解明を目指す。

Outline of Final Research Achievements

Endoplasmic reticulum-mitochondria contact site (EMCS) plays an important role in various cellular activities including calcium ion transport and lipid transport, but its dynamics in living cells have remained unclear. In this study, we performed live imaging of EMCSs using a probe that utilizes a dimeric fluorescent protein, and analyzed the formation/disappearance and motility of them in living cells. The contact sites had dynamic properties even in steady state, but when cells received ligand stimulation or mechanical stimulation, we found significant increase in number and size of EMCSs, and calcium ion transfer to the mitochondria was found to be enhanced at EMCSs. Therefore, it was suggested that the function of EMCSs could be regulated by their morphological modification.

Academic Significance and Societal Importance of the Research Achievements

小胞体-ミトコンドリア接触領域は、カルシウムイオンや脂質など情報や物質をやり取りする場であり、細胞機能の維持に重要な役割をはたしている。この接触領域の機能が損なわれることにより疾病が誘導される可能性も考えられている。すなわち、それぞれのオルガネラ機能異常に加え、接触領域の機能の欠落や変調が疾病の発症基盤になると考えられる。本研究によって、接触領域の動態が接触領域の機能発現に重要な役割を果たしていることが示されたので、したがって接触領域の動態を制御することにより疾病の予防・治療方法の開発へつながる可能性が示唆された。

Report

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

    (13 results)

All 2023 2022 2021 Other

All Int'l Joint Research (1 results) Journal Article (8 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (4 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Int'l Joint Research] Ohio University(米国)

    • Related Report
      2022 Research-status Report
  • [Journal Article] モデル生物の筋萎縮とミトコンドリアCa2+2023

    • Author(s)
      寺西美佳、東谷篤志、小林 剛
    • Journal Title

      Precision Medicine

      Volume: 6 Pages: 659-662

    • Related Report
      2023 Annual Research Report
  • [Journal Article] ミトコンドリアにおける機械刺激受容2023

    • Author(s)
      小林 剛、田中瑞奈、寺西美佳、東谷篤志
    • Journal Title

      細胞

      Volume: 55 Pages: 55-58

    • Related Report
      2022 Research-status Report
  • [Journal Article] Increased mitochondrial Ca2+ contributes to health decline with age and Duchene muscular dystrophy in C. elegans.2023

    • Author(s)
      Higashitani A, Teranishi M, Nakagawa Y, Itoh Y, Sudevan S, Szewczyk NJ, Kubota Y, Abe T, Kobayashi T
    • Journal Title

      FASEB J

      Volume: 37 Issue: 4

    • DOI

      10.1096/fj.202201489rr

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Meclozine ameliorates skeletal muscle pathology and increases muscle forces in mdx mice2022

    • Author(s)
      Kawamura Yusuke、Hida Tetsuro、Ohkawara Bisei、Matsushita Masaki、Kobayashi Takeshi、Ishizuka Shinya、Hiraiwa Hideki、Tanaka Satoshi、Tsushima Mikito、Nakashima Hiroaki、Ito Kenyu、Imagama Shiro、Ito Mikako、Masuda Akio、Ishiguro Naoki、Ohno Kinji
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 592 Pages: 87-92

    • DOI

      10.1016/j.bbrc.2022.01.003

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] ミトコンドリアに注目したメカノバイオロジー2021

    • Author(s)
      小林 剛、田中瑞奈、寺西美佳、東谷篤志
    • Journal Title

      Precision Medicine

      Volume: 4 Pages: 873-877

    • Related Report
      2021 Research-status Report
  • [Journal Article] ミトコンドリアにおけるメカニカルストレス感知と応答2021

    • Author(s)
      小林 剛、田中瑞奈、寺西美佳、東谷篤志
    • Journal Title

      細胞

      Volume: 53 Pages: 62-65

    • NAID

      40022742567

    • Related Report
      2021 Research-status Report
  • [Journal Article] Morin attenuates dexamethasone-mediated oxidative stress and atrophy in mouse C2C12 skeletal myotubes2021

    • Author(s)
      Ulla Anayt、Uchida Takayuki、Miki Yukari、Sugiura Kosuke、Higashitani Atsushi、Kobayashi Takeshi、Ohno Ayako、Nakao Reiko、Hirasaka Katsuya、Sakakibara Iori、Nikawa Takeshi
    • Journal Title

      Archives of Biochemistry and Biophysics

      Volume: 704 Pages: 108873-108873

    • DOI

      10.1016/j.abb.2021.108873

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Sphingosine-1-Phosphate Induces ATP Release via Volume-Regulated Anion Channels in Breast Cell Lines2021

    • Author(s)
      Furuya K, Hirata H, Kobayashi T, Sokabe M
    • Journal Title

      Life

      Volume: 11 Issue: 8 Pages: 851-851

    • DOI

      10.3390/life11080851

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 国際宇宙ステーションにおけるライブセル共焦点イメージング2023

    • Author(s)
      小林 剛、内田貴之、田中瑞奈、橋爪藤子、石毛智子、安西洋平、中山師生、梅村さや香、山﨑誠和、鈴木智美、笠原春夫、梅原真澄、谷川直樹、嶋津 徹、伊藤 剛、東端 晃、二川 健、曽我部正博
    • Organizer
      日本宇宙生物科学会第37回大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Mechano-sensing of mitochondria in cultured animal cells2023

    • Author(s)
      Kobayashi T, Tanaka M, Teranishi M, Nikawa T, Higashitani A
    • Organizer
      International Symposium on Mechanobiology for Human Health: 8 years progress in the AMED-CREST/PRIME project on mechanobiology
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Cell Gravisensing Project2021

    • Author(s)
      Kobayashi T
    • Organizer
      Joint CSA/ESA/JAXA/NASA ISS Increment 65 Science Symposium
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 単一細胞における重力センシング機構の解明を目指して(Towards understanding the gravity sensing in single cells)2021

    • Author(s)
      曽我部正博、小林 剛、二川 健、東端 晃
    • Organizer
      日本機械学会 第33回バイオエンジニアリング講演会 「宇宙とメカノバイオロジー」
    • Related Report
      2021 Research-status Report
    • Invited

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

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