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Exploratiion of mechanisms for formation of aberrant stress granules and TDP-43 aggregates

Research Project

Project/Area Number 21K07291
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 51030:Pathophysiologic neuroscience-related
Research InstitutionNiigata University

Principal Investigator

Kakihana Taichi  新潟大学, 医歯学系, 助教 (60746907)

Project Period (FY) 2021-04-01 – 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 2023: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords筋萎縮性側索硬化症 / ストレス顆粒 / ALS / 神経変性疾患 / タンパク質凝集体
Outline of Research at the Start

筋萎縮側索硬化症(ALS)は、運動神経細胞死を特徴とする致死性の神経変性疾患である。90%以上のALS患者の運動神経細胞質には、ユビキチン化されたTDP-43蛋白質の凝集体が形成される。しかしながら、TDP-43の凝集体形成メカニズムは不明のままであった。最近の研究から、TDP-43凝集体形成にストレス顆粒が関与することが示唆された。ストレス顆粒はストレス下で細胞質に一過的に形成される構造体である。しかし、遺伝子変異などが原因でストレス顆粒が断続的に形成されると、ストレス顆粒へ凝集性蛋白質が局在することが判ってきた。本研究では、ストレス顆粒へのTDP-43凝集体の局在メカニズムを明らかにする。

Outline of Final Research Achievements

Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease characterized by dysfunction and cell death of motor neurons in the brainstem and spinal cord and the resulting motor deficits. TDP-43 is the causative protein in familial and arcuate ALS; in ALS motor neurons, ubiquitinated TDP-43 forms aggregates in the cytoplasm, which induce neuronal dysfunction and cell death, resulting in ALS. Stress granules are non-membrane organelles that form transiently under stress. Stress granules have recently been shown to be involved in the formation of ubiquitinated TDP-43 aggregates. We have elucidated the quality control mechanism of stress granule formation and the mechanism of TDP-43 aggregate formation in ALS(Kakihana, iScience, 2021; Takahashi, Mol Cell Biol, 2022; Sango, J Biol Chem, 2022), and have opened up a new research area.

Academic Significance and Societal Importance of the Research Achievements

ストレス顆粒の形成異常が、神経変性疾患やがん、糖尿病などの原因として示唆されている。代表者らは、ストレス顆粒の形成異常を引き起こす複数の細胞内経路を同定することができた。同定された細胞内経路は、ALSやパーキンソン病などの原因となるタンパク質やストレス因子の毒性を緩和することが判明した。これらの研究成果を発展させることで、新たな治療、創薬標的を創出することが期待できる。

Report

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

    (12 results)

All 2024 2023 2022 2021 Other

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (5 results) (of which Invited: 1 results) Remarks (3 results)

  • [Journal Article] Genetic engineering employing MPB70 and its promoter enables efficient secretion and expression of foreign antigen in bacillus Calmette Gu?rin (BCG) Tokyo2024

    • Author(s)
      Takeishi Atsuki、Shaban Amina K.、Kakihana Taichi、(22 persos)、Matsumoto Sohkichi
    • Journal Title

      Microbiology and Immunology

      Volume: 68 Issue: 4 Pages: 130-147

    • DOI

      10.1111/1348-0421.13116

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] USP10 Inhibits Aberrant Cytoplasmic Aggregation of TDP-43 by Promoting Stress Granule Clearance2022

    • Author(s)
      Takahashi Masahiko、Kitaura Hiroki、Kakita Akiyoshi、Kakihana Taichi、Katsuragi Yoshinori、Onodera Osamu、Iwakura Yuriko、Nawa Hiroyuki、Komatsu Masaaki、Fujii Masahiro
    • Journal Title

      Molecular and Cellular Biology

      Volume: 42 Issue: 3

    • DOI

      10.1128/mcb.00393-21

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] USP10 inhibits the dopamine-induced reactive oxygen species-dependent apoptosis of neuronal cells by stimulating the antioxidant Nrf2 activity2022

    • Author(s)
      Sango Junya、Kakihana Taichi、Takahashi Masahiko、Katsuragi Yoshinori、Anisimov Sergei、Komatsu Masaaki、Fujii Masahiro
    • Journal Title

      Journal of Biological Chemistry

      Volume: 298 Issue: 1 Pages: 101448-101448

    • DOI

      10.1016/j.jbc.2021.101448

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The optineurin/TIA1 pathway inhibits aberrant stress granule formation and reduces ubiquitinated TDP-432021

    • Author(s)
      Kakihana Taichi、Takahashi Masahiko、Katsuragi Yoshinori、Yamashita Shun-Ichi、Sango Junya、Kanki Tomotake、Onodera Osamu、Fujii Masahiro
    • Journal Title

      iScience

      Volume: 24 Issue: 7 Pages: 102733-102733

    • DOI

      10.1016/j.isci.2021.102733

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] p62液滴とストレス顆粒形成制御によるNrf2抗酸化ストレス経路の活性化とドパミン誘導性神経細胞死の抑制2023

    • Author(s)
      Taichi Kakihana, Junya Sango, Masahiko Takahashi, Masahiro Fujii
    • Organizer
      第96回日本生化学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] p62-body and stress granule regulate dopamine-induced neuronal cell death through activation of the Nrf2 antioxidant pathway2023

    • Author(s)
      Taichi Kakihana, Junya Sango, Masahiko Takahashi, Masahiro Fujii
    • Organizer
      the 24th RNA Society of Japan
    • Related Report
      2023 Annual Research Report
  • [Presentation] 神経変性疾患におけるストレス顆粒形成異常の分子メカニズム2023

    • Author(s)
      垣花太一
    • Organizer
      東北大学学際科学部フロンティア研究所セミナー
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Optineurin/TIA1 pathway reduces ubiquitinated TDP-43 aggregation by promoting stress granule clearance2022

    • Author(s)
      Kakihana T, Takahashi M, Katsuragi Y, Yamashita SH, Kanki T, Onodera O, Fujii M.
    • Organizer
      Neuro2022
    • Related Report
      2022 Research-status Report
  • [Presentation] ストレス顆粒形成異常の分子機構の解明2022

    • Author(s)
      垣花太一
    • Organizer
      第15回小胞体ストレス研究会
    • Related Report
      2022 Research-status Report
  • [Remarks] 筋萎縮性側索硬化症の原因遺伝子であるTDP-43病的な凝集体の形成を抑制する分子を発見

    • URL

      https://www.niigata-u.ac.jp/wp-content/uploads/2022/01/220117rs.pdf

    • Related Report
      2021 Research-status Report
  • [Remarks] ドーパミン神経細胞の細胞死を抑制する新たな分子を発見

    • URL

      https://www.niigata-u.ac.jp/wp-content/uploads/2021/11/211125rs.pdf

    • Related Report
      2021 Research-status Report
  • [Remarks] 筋萎縮性側索硬化症において異常なTDP-43凝集体の形成を抑制する分子メカニズムを解明

    • URL

      https://www.niigata-u.ac.jp/wp-content/uploads/2021/06/210629rs.pdf

    • Related Report
      2021 Research-status Report

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

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