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Removal Mechanism of Nuclear Aggregates - Are nuclear aggregates transported out of the nucleus by the same mechanism as viruses?

Research Project

Project/Area Number 20K06569
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 43030:Functional biochemistry-related
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

Shinkai Yoichi  国立研究開発法人産業技術総合研究所, 生命工学領域, 研究グループ長 (00758378)

Co-Investigator(Kenkyū-buntansha) 戸井 基道  国立研究開発法人産業技術総合研究所, 生命工学領域, 研究グループ付 (50344213)
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: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords線虫C. elegans / 神経変性疾患 / 液-液相分離 / FGリピートタンパク質 / 液液相分離 / 凝集体 / 疎水性相互作用 / 核内凝集タンパク質 / 神経細胞
Outline of Research at the Start

細胞は不必要なタンパク質凝集体を除去することによって正常な細胞機能を維持している。我々は、線虫C. elegansの神経細胞核内にタンパク質凝集体を蓄積させたところ、あたかも出芽するように核膜が大きく変形し、タンパク質凝集体が核外へと排出されることを見出した。さらに、我々はこれまでに凝集体に特異的に結合する分子を単離した。本研究課題では、ウイルスの核外輸送に関与する分子を手がかりとして、核内タンパク質凝集体の排出機構を解明する。

Outline of Final Research Achievements

Cells maintain their cellular functions by removing unnecessary protein aggregates. We found that the nuclear membrane was greatly deformed and the protein aggregates were ejected from the nucleus, when protein aggregates were accumulated in the nucleus of C. elegans neurons. Using proximity-dependent labeling, we comprehensively identified a group of molecules that interact with nuclear aggregates and found FG repeat proteins that closely resemble the constituent molecules of the nuclear membrane pore complexes. The liquid-liquid phase separation role of FG repeat protein is known as a selective barrier for nuclear transport, but its other functions were not known. The function of FG repeat protein in the removal process of protein aggregates was clarified by our study.

Academic Significance and Societal Importance of the Research Achievements

神経変性疾患の原因メカニズムの一つとして液-液相分離の破綻が注目されている。本研究では、FGリピートタンパク質の液-液相分離の細胞機能やその破綻の影響を明らかにしてきた。今後、本研究がさらに進展することによって、神経変性疾患の発症メカニズムやバイオミメティクスによる治療法の発見などが期待できる。

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

    (16 results)

All 2023 2022 2021

All Journal Article (11 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 11 results,  Open Access: 8 results) Presentation (3 results) (of which Invited: 3 results) Book (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Time-Resolved X-ray Observation of Intracellular Crystallized Protein in Living Animal2023

    • Author(s)
      Kuramochi Masahiro、Sugawara Ibuki、Shinkai Yoichi、Mio Kazuhiro、Sasaki Yuji C.
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 24 Issue: 23 Pages: 16914-16914

    • DOI

      10.3390/ijms242316914

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Phase-Separation Propensity of Non-ionic Amino Acids in Peptide-Based Complex Coacervation Systems2023

    • Author(s)
      Akahoshi Yuto、Sugai Hiroka、Mimura Masahiro、Shinkai Yoichi、Kurita Ryoji、Shiraki Kentaro、Tomita Shunsuke
    • Journal Title

      Biomacromolecules

      Volume: 24 Issue: 2 Pages: 704-713

    • DOI

      10.1021/acs.biomac.2c01148

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] A novel NONO variant that causes developmental delay and cardiac phenotypes2023

    • Author(s)
      Itai T、Sugie A、Nitta Y、Maki R、Suzuki T、Shinkai Y、Watanabe Y、Nakano Y、Ichikawa K、Okamoto N、Utsuno Y、Koshimizu E、Fujita A、Hamanaka K、Uchiyama Y、Tsuchida N、Miyake N、Misawa K、Mizuguchi T、Miyatake S、Matsumoto N
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1 Pages: 975-975

    • DOI

      10.1038/s41598-023-27770-6

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dynamic motions of ice-binding proteins in living Caenorhabditis elegans using diffracted X-ray blinking and tracking2022

    • Author(s)
      Kuramochi Masahiro、Dong Yige、Yang Yue、Arai Tatsuya、Okada Rio、Shinkai Yoichi、Doi Motomichi、Aoyama Kouki、Sekiguchi Hiroshi、Mio Kazuhiro、Tsuda Sakae、Sasaki Yuji C.
    • Journal Title

      Biochemistry and Biophysics Reports

      Volume: 29 Pages: 101224-101224

    • DOI

      10.1016/j.bbrep.2022.101224

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A mutation to a fish ice-binding protein synthesized in transgenic Caenorhabditis elegans modulates its cold tolerance2022

    • Author(s)
      Kuramochi Masahiro、Zhu Shumiao、Takanashi Chiaki、Yang Yue、Arai Tatsuya、Shinkai Yoichi、Doi Motomichi、Mio Kazuhiro、Tsuda Sakae、Sasaki Yuji C.
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 628 Pages: 98-103

    • DOI

      10.1016/j.bbrc.2022.08.073

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The molecular and neural regulation of ultraviolet light phototaxis and its food-associated learning behavioral plasticity in C. elegans2022

    • Author(s)
      Ozawa Kazuki、Shinkai Yoichi、Kako Koichiro、Fukamizu Akiyoshi、Doi Motomichi
    • Journal Title

      Neuroscience Letters

      Volume: 770 Pages: 136384-136384

    • DOI

      10.1016/j.neulet.2021.136384

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] C9orf72-derived arginine-rich poly-dipeptides impede phase modifiers2021

    • Author(s)
      Nanaura Hitoki、Aiba Yuichiro、Nakanishi Mari、Shiota Tomo、Hibino Masaki、Kikuchi Sotaro、Nagata Riko、Morikawa Naritaka、Iguchi Naohiko、Kiriyama Takao、Nagamori Shushi、Sugie Kazuma、Saio Tomohide、Yoshizawa Takuya、Mori Eiichiro et al.
    • Journal Title

      Nature Communications

      Volume: 12 Issue: 1 Pages: 5301-5301

    • DOI

      10.1038/s41467-021-25560-0

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Uncharged Components of Single-Stranded DNA Modulate Liquid–Liquid Phase Separation With Cationic Linker Histone H12021

    • Author(s)
      Masahiro Mimura, Shunsuke Tomita, Hiroka Sugai, Yoichi Shinkai, Sayaka Ishihara, Ryoji Kurita
    • Journal Title

      Frontiers in Cell and Developmental Biology

      Volume: 9 Pages: 1-9

    • DOI

      10.3389/fcell.2021.710729

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] New Family Members of FG Repeat Proteins and Their Unexplored Roles During Phase Separation2021

    • Author(s)
      Shinkai Yoichi、Kuramochi Masahiro、Miyafusa Takamitsu
    • Journal Title

      Frontiers in Cell and Developmental Biology

      Volume: 9

    • DOI

      10.3389/fcell.2021.708702

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Quadruplex folding promotes the condensation of linker histones and DNAs via liquid-liquid phase separation2021

    • Author(s)
      Masahiro Mimura, Shunsuke Tomita, Yoichi Shinkai, Takuya Hosokai, Hiroyuki Kumeta, Tomohide Saio, Kentaro Shiraki, Ryoji Kurita
    • Journal Title

      Journal of the American Chemical Society

      Volume: 143 Issue: 26 Pages: 9894-9857

    • DOI

      10.1021/jacs.1c03447

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Retrogradely transmitted α-synuclein is taken up by the endophilin-independent endocytosis in the C.?elegans neural circuit2021

    • Author(s)
      Wang Xuan、Shinkai Yoichi、Doi Motomichi
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 552 Pages: 176-182

    • DOI

      10.1016/j.bbrc.2021.03.029

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] 細胞内液-液相分離の攪乱とその生体応答2023

    • Author(s)
      新海陽一
    • Organizer
      第96回日本生化学会大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] C9orf72異常反復配列由来ジペプチドリピートによる運動ニューロン障害の分子メカニズム2023

    • Author(s)
      新海陽一
    • Organizer
      第46回日本分子生物学会年会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 核膜孔以外に存在するFG repeatタンパク質の知られざる機能2021

    • Author(s)
      新海陽一
    • Organizer
      第5回LLPS研究会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Book] ゲノム編集の最新技術と医薬品・遺伝子治療・農業・水畜産物・有用物質生産への活用2023

    • Author(s)
      宮岡 佑一郎、新海陽一、戸井基道、技術情報協会、他57名
    • Total Pages
      605
    • Publisher
      技術情報協会
    • ISBN
      9784861049781
    • Related Report
      2023 Annual Research Report
  • [Patent(Industrial Property Rights)] アクチン構造の検出方法2021

    • Inventor(s)
      長崎晃、上田太郎、貴嶋紗久、加藤薫、新海陽一、他6名
    • Industrial Property Rights Holder
      国立研究開発法人 産業技術総合研究所
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Related Report
      2021 Research-status Report

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

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