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Structure-function analysis of a vacuolar membrane factor that controls selective autophagy

Research Project

Project/Area Number 17K07319
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Structural biochemistry
Research InstitutionMicrobial Chemistry Research Foundation

Principal Investigator

Fujioka Yuko  公益財団法人微生物化学研究会, 微生物化学研究所, 研究員 (80399964)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsオートファジー / 蛋白質
Outline of Final Research Achievements

In this study, we studied the structure and function of Vac8, a component of the PAS that mediates autophagy initiation. Our results show that the PAS is a complex with liquid-like properties (droplets) and that Vac8 acts as a link between the PAS and the vacuolar membrane via Atg13. Additionally, we suggested that the roles of Vac8 and Atg13 in PAS tethering to the vacuole are common between starvation-induced autophagy and the Cvt pathway although the components of the starvation PAS and the selective PAS functioning in the Cvt pathway were known to be different.

Academic Significance and Societal Importance of the Research Achievements

オートファジーがどのように引き起こされるのかを理解することは、それ自体が科学の発展に寄与するだけでなく、オートファジーの機能不全が関与する、神経変性疾患をはじめとする各種疾患の治療法、治療薬の開発をする上で重要な基盤となる。本研究成果によって、オートファジーの始動機構の一端を明らかにすることができたが、今後も引き続き研究を進めていく予定である。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (9 results)

All 2020 2018 Other

All Int'l Joint Research (2 results) Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results) Presentation (1 results) Remarks (2 results)

  • [Int'l Joint Research] Max Planck Institute(ドイツ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Max Planck Institute(ドイツ)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Phase separation organizes the site of autophagosome formation2020

    • Author(s)
      Fujioka Yuko、Alam Jahangir Md.、Noshiro Daisuke、Mouri Kazunari、Ando Toshio、Okada Yasushi、May Alexander I.、Knorr Roland L.、Suzuki Kuninori、Ohsumi Yoshinori、Noda Nobuo N.
    • Journal Title

      Nature

      Volume: 578 Issue: 7794 Pages: 301-305

    • DOI

      10.1038/s41586-020-1977-6

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Liquidity Is a Critical Determinant for Selective Autophagy of Protein Condensates2020

    • Author(s)
      Yamasaki Akinori、Alam Jahangir Md.、Noshiro Daisuke、Hirata Eri、Fujioka Yuko、Suzuki Kuninori、Ohsumi Yoshinori、Noda Nobuo N.
    • Journal Title

      Molecular Cell

      Volume: 77 Issue: 6 Pages: 1163-1175

    • DOI

      10.1016/j.molcel.2019.12.026

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] オートファジーと液-液相分離2020

    • Author(s)
      藤岡優子
    • Journal Title

      医学のあゆみ

      Volume: 272 Pages: 763-768

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Atg7 Activates an Autophagy-Essential Ubiquitin-like Protein Atg8 through Multi-Step Recognition2018

    • Author(s)
      Yamaguchi Masaya、Satoo Kenji、Suzuki Hironori、Fujioka Yuko、Ohsumi Yoshinori、Inagaki Fuyuhiko、Noda Nobuo N.
    • Journal Title

      Journal of Molecular Biology

      Volume: 430 Issue: 3 Pages: 249-257

    • DOI

      10.1016/j.jmb.2017.12.002

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] オートファゴソーム形成場PASの液-液相分離を介した構築原理2018

    • Author(s)
      藤岡優子,Jahangir Md. Alam,野田展生
    • Organizer
      第41回日本分子生物学会年会
    • Related Report
      2018 Research-status Report
  • [Remarks] 微生物化学研究所HP

    • URL

      https://www.bikaken.or.jp/

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
  • [Remarks] 微生物化学研究所HP

    • URL

      http://www.bikaken.or.jp/

    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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