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Studies on the signal transduction network connecting the ubiquitin-proteasome system to the extracellular nutritional environment

Research Project

Project/Area Number 16K07359
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Cell biology
Research InstitutionKonan University

Principal Investigator

Takeda Kojiro  甲南大学, 理工学部, 准教授 (90426578)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords栄養素 / タンパク質分解 / ホスファターゼ / Greatwallキナーゼ / 分裂酵母 / プロテアソーム / Endosulfine / PP2A / 細胞周期 / 栄養 / シグナル伝達
Outline of Final Research Achievements

The aim of this research is to elucidate the signal transduction network that connects extracellular nutritional environment to regulations of intracellular proteolysis system, especially, the ubiquitin proteasome system, by using the fission yeast S. pombe as a model. Because we had preliminary results suggesting the evolutionally conserved Greatwall kinase (Gwl)/alpha-Endosulfine (Ensa)-PP2A pathway may be involved, we focused on this pathway. We clarified proteins composing Gwl/Ensa-PP2A pathway in the fission yeast and the physiological functions of the pathway. We also obtained results strongly suggesting that the fission yeast Gwl/Ensa-PP2A pathway is engaged in transmitting extracellular nutritional information to the proteasome or the localization factor(s) of the proteasome.

Academic Significance and Societal Importance of the Research Achievements

プロテアソームに依存したタンパク質分解は,細胞周期やシグナル伝達などの真核生物に普遍的な生命現象に関与しているにとどまらず,老化や寿命への関連も指摘され注目されている。また,栄養状態や代謝が老化や寿命に大きな影響を持つことも広く受け入れられている。本研究は,栄養とプロテアソーム周辺を結びつける細胞内のシグナル伝達ネットワークに焦点をあわせている。また,実験材料は菌類である酵母であるものの,注目している分子群はいずれもヒトまで保存されたものであり,基礎医学分野への将来的な情報の提供という意味合いで学術的・社会的意義がある。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (6 results)

All 2019 2018 2017 2016

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (4 results)

  • [Journal Article] The fission yeast Greatwall-Endosulfine pathway is required for proper quiescence/G0 phase entry and maintenance.2019

    • Author(s)
      Aono S, Haruna Y, Watanabe YH, Mochida S, Takeda K
    • Journal Title

      Genes Cells

      Volume: 24 Issue: 2 Pages: 172-186

    • DOI

      10.1111/gtc.12665

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Nutrient signaling via the TORC1-greatwall-PP2AB55δ pathway is responsible for the high initial rates of alcoholic fermentation in sake yeast strains of Saccharomyces cerevisiae.2018

    • Author(s)
      D. Watanabe, T. Kajihara, Y. Sugimoto, K. Takagi, M. Mizuno, Y. Zhou, J. Chen, K. Takeda, H. Tatebe, K. Shiozaki, N. Nakazawa, S. Izawa, T. Akao, H. Shimoi, T. Maeda, and H. Takagi
    • Journal Title

      Appl. Environ. Microbiol.

      Volume: 85 Issue: 1

    • DOI

      10.1128/aem.02083-18

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] 栄養と連係する細胞内タンパク分解2017

    • Author(s)
      武田鋼二郎
    • Organizer
      甲南大学統合ニューロバイオロジー研究所第5回シンポジウム
    • Related Report
      2017 Research-status Report
  • [Presentation] 分裂酵母のプロテアソームβ5サブユニットPts1と遺伝的相互作用する因子の解析2016

    • Author(s)
      鈴木奈津美,岸本卓也、武田鋼二郎
    • Organizer
      第39回日本分子生物学会年会
    • Place of Presentation
      パシフィコ横浜
    • Year and Date
      2016-11-30
    • Related Report
      2016 Research-status Report
  • [Presentation] 低グルコース環境での呼吸阻害が分裂酵母の細胞周期に与える影響2016

    • Author(s)
      石井眞弘、武田鋼二郎
    • Organizer
      第39回日本分子生物学会年会
    • Place of Presentation
      パシフィコ横浜
    • Year and Date
      2016-11-30
    • Related Report
      2016 Research-status Report
  • [Presentation] 分裂酵母Greatwall kinase/α-Endosulfine経路とタンパク質分解系に関わる新規因子の探索2016

    • Author(s)
      青野壮馬、前川ちか、田中築樹、山下大智、武田鋼二郎
    • Organizer
      第39回日本分子生物学会年会
    • Place of Presentation
      パシフィコ横浜
    • Year and Date
      2016-11-30
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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