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Analysis of the regulation of TORC2 signaling by phosphatidylserine

Research Project

Project/Area Number 17K15414
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Applied molecular and cellular biology
Research InstitutionKyoto University

Principal Investigator

Nomura Wataru  京都大学, 農学研究科, 特定助教 (60724292)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2017: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
KeywordsTORC2 / Pkc1 / Rho1 / ホスファチジルセリン / 酵母 / シグナル伝達
Outline of Final Research Achievements

TOR complex 2 (TORC2) is an evolutionarily conserved protein kinase complex that constitutes the signaling pathways required for cell growth. TORC2-Pkc1 signaling is one of the TORC2-involved signaling pathways in budding yeast, and the small GTPase Rho1 is necessary for the activation of TORC2-Pkc1 signaling. In this study, we found that the phosphatidyserine (PS) contributed to the activation of TORC2-Pkc1 signaling. We also showed that the C1 domain of Pkc1 that is important for the physical interaction with Rho1 bound to PS, and PS was necessary for the physical interaction between Pkc1 and Rho1.

Academic Significance and Societal Importance of the Research Achievements

細胞増殖に必須なシグナル伝達経路であるTORC2シグナルは、酵母から哺乳動物に至るまで高度に保存されており、がんや老化・寿命などとの関連も指摘されている。しかしながら、TORC2シグナルの活性制御機構については不明な部分が多く、よく分かっていない。本研究では、出芽酵母をモデル生物として利用した解析で、TORC2シグナルの制御機構に主要な細胞膜脂質の一つであるホスファチジルセリンが関与することを見出した。本研究結果は、TORC2シグナルの制御機構の解明のみならず、TORC2とがんや老化・寿命との因果関係に関する新しい知見の提供にも繋がる可能性が期待される。

Report

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

    (10 results)

All 2018 2017

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Book (1 results)

  • [Journal Article] Toxicity of dihydroxyacetone is exerted through the formation of methylglyoxal inSaccharomyces cerevisiae: effects on actin polarity and nuclear division2018

    • Author(s)
      Nomura Wataru、Aoki Miho、Inoue Yoshiharu
    • Journal Title

      Biochemical Journal

      Volume: 475 Issue: 16 Pages: 2637-2652

    • DOI

      10.1042/bcj20180234

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Phosphatidylinositol 3,5-bisphosphate is involved in methylglyoxal-induced activation of the Mpk1 mitogen-activated protein kinase cascade inSaccharomyces cerevisiae2017

    • Author(s)
      Nomura Wataru、Maeta Kazuhiro、Inoue Yoshiharu
    • Journal Title

      Journal of Biological Chemistry

      Volume: 292 Issue: 36 Pages: 15039-15048

    • DOI

      10.1074/jbc.m117.791590

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Contribution of phosphatidylserine to Rho1- and Pkc1-related repolarization of the actin cytoskeleton under stressed conditions in Saccharomyces cerevisiae2017

    • Author(s)
      Nomura Wataru、Inoue Yoshiharu
    • Journal Title

      Small GTPases

      Volume: - Issue: 6 Pages: 449-455

    • DOI

      10.1080/21541248.2017.1339766

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 出芽酵母のストレス応答におけるPKCシグナルの制御機構2018

    • Author(s)
      野村 亘
    • Organizer
      第85回 酵母研究会講演会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Pkc1安定性とリン酸化状態との関連性2018

    • Author(s)
      野村 亘、今井 杏里沙、後藤 剛、河田 照雄、井上 善晴
    • Organizer
      酵母遺伝学フォ-ラム 第51回研究報告会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 出芽酵母PKCのリン酸化状態が安定性に及ぼす影響2018

    • Author(s)
      野村 亘、今井 杏里沙、後藤 剛、河田 照雄、井上 善晴
    • Organizer
      第41回 日本分子生物学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ホスファチジルセリンが関与する酵母Cキナーゼの制御機構2017

    • Author(s)
      野村 亘,河田照雄,井上善晴
    • Organizer
      第64回 日本生化学会 近畿支部例会
    • Related Report
      2017 Research-status Report
  • [Presentation] Contribution of Phosphatidylserine to Protein Kinase C Signaling in Saccharomyces cerevisiae.2017

    • Author(s)
      Wataru Nomura, Teruo Kawada, Yoshiharu Inoue
    • Organizer
      28th International Conference on Yeast Genetics and Molecular Biology
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Cdc42が関与する出芽酵母TOR複合体2シグナルの解析2017

    • Author(s)
      野村 亘、後藤 剛、高原 照直、前田 達哉、河田 照雄、井上 善晴
    • Organizer
      酵母遺伝学フォ-ラム 第50回研究報告会
    • Related Report
      2017 Research-status Report
  • [Book] The Yeast Role in Medical Applications (Chapter 4; TOR signaling in budding yeast.)2018

    • Author(s)
      Inoue, Y., and Nomura, W.
    • Total Pages
      24
    • Publisher
      InTechOpen
    • Related Report
      2017 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2020-03-30  

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