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Development of new approaches for exploring the structural dynamics of the membrane-less organelle in cells

Research Project

Project/Area Number 19H03168
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 43020:Structural biochemistry-related
Research InstitutionHiroshima University

Principal Investigator

Tate Shin-ichi  広島大学, 統合生命科学研究科(理), 教授 (20216998)

Co-Investigator(Kenkyū-buntansha) 安田 恭大  広島大学, 統合生命科学研究科(理), 助教 (40816344)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2022: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2021: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2020: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Keywords液液相分離 / プロテオミクス / ストレス顆粒 / 天然変性タンパク質 / 近接標識法 / NMR / B型肝炎ウイルス / 細胞内プロテオミクス解析 / メンブレンレスオルガネラ / 共焦点顕微鏡 / 質量分析 / 細胞内プロテオミクス
Outline of Research at the Start

細胞は外部からの刺激に応じて,細胞内部で可逆的な顆粒構造を形成する.このような細胞内顆粒構造は,顆粒を構成するタンパク質が持つ天然変性領域を介した「液液相分離」により形成される.本研究では,細胞内光架橋反応と質量分析技術を駆使して,細胞内顆粒構造を構成するタンパク質組成と顆粒内における構成タンパク質間相互作用様式の時空間変化を解明する.この研究を通して,細胞内環境に応じてダイナミックに生成・消滅する細胞内顆粒の形成機構を解明する.

Outline of Final Research Achievements

We have devised a new experimental approach to explore the time-dependent change in the protein-protein interaction network inside protein droplets, named ‘time-resolved proteomics (TRP)’. The TRP method was applied to the stress granules (SGs) formed in the cells exposed to stress. In this work, we focused on two proteins engaging in SGs, TIA1, and G3BP1, to explore how they change their interacting partner proteins in SGs time-dependently after exposing cells to stresses. In the TRP analyses, we found TIA1 and G3BP changed the interacting partners according to the time after the stress, which may explain the functional regulation of the SGs as membraneless organelles. Our data provide the first observations of how the protein-protein interaction network changes inside droplets time-dependently.

Academic Significance and Societal Importance of the Research Achievements

タンパク質が液液相分離により細胞内に形成する液滴構造は,膜を持たない細胞内小器官として細胞内反応制御に係わる.しかし,200以上のタンパク質・核酸から構成される複雑な液滴構造内部で,どのように機能制御が実現されるかは明らかになっていない.本研究は,液滴構造内部におけるタンパク質間相互作用ネットワークが時間と共に変化する様子を,近接標識法を基にした時分割プロテイミクス法により明らかにした.時間とともに変化するタンパク質間相互作用ネットワークの観測に成功した.時間と共に液滴内部で動的に制御されるタンパク質間相互作用の変化が,ドロップレット内部の機能制御を実現するという新たな機構を明らかにした.

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (27 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (7 results) Journal Article (11 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 10 results,  Open Access: 8 results) Presentation (7 results) (of which Int'l Joint Research: 4 results,  Invited: 7 results) Remarks (2 results)

  • [Int'l Joint Research] Seoul National University/UNIST Central Research Facilities(韓国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] University of Padova(イタリア)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Seoul National University/UNIST Central Research Facilities(韓国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] University of Padova(イタリア)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] NIH(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] ソウル大学(韓国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] リヨン大学(フランス)

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Valosin‐containing protein (VCP) regulates the stability of fused in sarcoma (FUS) granules in cells by changing ATP concentrations2022

    • Author(s)
      Yasuda Kyota、Watanabe Tomonobu M.、Kang Myeong‐Gyun、Seo Jeong Kon、Rhee Hyun‐Woo、Tate Shin‐ichi
    • Journal Title

      FEBS Letters

      Volume: - Issue: 11 Pages: 1412-1423

    • DOI

      10.1002/1873-3468.14353

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Identification of embryonic RNA granules that act as sites of mRNA translation after changing their physical properties2022

    • Author(s)
      Sato Keisuke、Sakai Moeko、Ishii Anna、Maehata Kaori、Takada Yuki、Yasuda Kyota、Kotani Tomoya
    • Journal Title

      iScience

      Volume: 25 Issue: 6 Pages: 104344-104344

    • DOI

      10.1016/j.isci.2022.104344

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] FUS液液相分離の機能と細胞内相分離制御機構2022

    • Author(s)
      安田恭大,楯 真一
    • Journal Title

      細胞

      Volume: 54 Pages: 448-451

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Path ensembles for Pin1-catalyzed cis-trans isomerization of a substrate calculated by weighted ensemble simulations2021

    • Author(s)
      Kei Moritsugu, Norifumi Yamamoto, Yasushige Yonezawa, Shin-ichi Tate, and Hiroshi Fujisaki
    • Journal Title

      Journal of Chemical Theory and Computation

      Volume: 17 Issue: 4 Pages: 2522-2529

    • DOI

      10.1021/acs.jctc.0c01280

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hepta-Histidine Inhibits Tau Aggregation2021

    • Author(s)
      Kondo Kanoh、Ikura Teikichi、Tanaka Hikari、Fujita Kyota、Takayama Sumire、Yoshioka Yuki、Tagawa Kazuhiko、Homma Hidenori、Liu Su、Kawasaki Ryosuke、Huang Yong、Ito Nobutoshi、Tate Shin-ichi、Okazawa Hitoshi
    • Journal Title

      ACS Chemical Neuroscience

      Volume: 12 Issue: 16 Pages: 3015-3027

    • DOI

      10.1021/acschemneuro.1c00164

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ultrasensitive Nucleosome Binding Regulation Mediated by Intrinsically Disordered Regions2021

    • Author(s)
      TATE Shin-ichi
    • Journal Title

      Seibutsu Butsuri

      Volume: 61 Issue: 5 Pages: 312-315

    • DOI

      10.2142/biophys.61.312

    • NAID

      130008093155

    • ISSN
      0582-4052, 1347-4219
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] タンパク質天然変性領域が実現するヌクレオソーム結合能の「超高感度応答性」機構2021

    • Author(s)
      楯 真一
    • Journal Title

      生物物理

      Volume: 61

    • NAID

      130008093155

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Impact of the Hereditary P301L Mutation on the Correlated Conformational Dynamics of Human Tau Protein Revealed by the Paramagnetic Relaxation Enhancement NMR Experiments2020

    • Author(s)
      Kawasaki Ryosuke、Tate Shin-ichi
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 21 Issue: 11 Pages: 3920-3920

    • DOI

      10.3390/ijms21113920

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ultrasensitive Change in Nucleosome Binding by Multiple Phosphorylations to the Intrinsically Disordered Region of the Histone Chaperone FACT2020

    • Author(s)
      D. Aoki, A. Awazu, M. Fujii, J. Uewaki, M. Hashimoto, N. Tochio, T. Umehara, S. Tate
    • Journal Title

      Journal of Molecular Biology

      Volume: 432 Issue: 16 Pages: 4637-4657

    • DOI

      10.1016/j.jmb.2020.06.011

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Linking substrate and nucleus via actin cytoskeleton in pluripotency maintenance of mouse embryonic stem cells2019

    • Author(s)
      David Brit Gracy、Fujita Hideaki、Yasuda Kyota、Okamoto Kazuko、Panina Yulia、Ichinose Junya、Sato Osamu、Horie Masanobu、Ichimura Taro、Okada Yasushi、Watanabe Tomonobu M
    • Journal Title

      Stem Cell Research

      Volume: 41 Pages: 101614-101614

    • DOI

      10.1016/j.scr.2019.101614

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Translational regulation of protrusion-localized RNAs involves silencing and clustering after transport2019

    • Author(s)
      Moissoglu Konstadinos、Yasuda Kyota、Wang Tianhong、Chrisafis George、Mili Stavroula
    • Journal Title

      eLife

      Volume: 8 Pages: 1-31

    • DOI

      10.7554/elife.44752

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Structure dynamics of intrinsically disordered proteind (IDPs) and their biological roles2022

    • Author(s)
      Shin-ichi Tate
    • Organizer
      The 7th International Symposium on Drug Discovery and Design by NMR
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] NMRによる天然変性タンパク質の構造ダイナミクスと機能との相関解析2022

    • Author(s)
      楯 真一
    • Organizer
      広島大学統合生命科学研究科シンポジウム「分子原子レベルの統合生命科学研究」(招待講演)
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Chirality Disruption in Protein Dynamics2021

    • Author(s)
      Shin-ichi Tate
    • Organizer
      Molecular Chirality 2021
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Recent structural researches on proteins as drug targets2020

    • Author(s)
      Shin-ichi Tate
    • Organizer
      第79回 日本癌学会学術総会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Structural properties of oxidized LDL receptor LOX-1 as a therapeutic target for atherosclerosis and cancers; significance of LOX-1 structure and dynamics in terms of drug design and drug delivery2019

    • Author(s)
      Shin-ichi Tate
    • Organizer
      Pharma Chemistry 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Multiple-phosphorylation in the intrinsically disordered region (IDR) of chromatin remodeler FACT tunes its remodeling activity through conformational dynamics2019

    • Author(s)
      Shin-ichi Tate
    • Organizer
      The 8th Asia-Pacific NMR symposium
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Effects of the detrimental familial mutation on the structure and dynamics of Tau and their relation to the fibril formation2019

    • Author(s)
      Shin-ichi Tate
    • Organizer
      The 10th Asia-Pacific IDP symposium
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Remarks]

    • URL

      https://www.mls.sci.hiroshima-u.ac.jp/biophys/index.html

    • Related Report
      2022 Annual Research Report
  • [Remarks] Molecular Biophysics Laboratory

    • Related Report
      2021 Annual Research Report

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Published: 2019-04-18   Modified: 2024-01-30  

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