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Mechanistic insight of autophagosome formation in relation with ER

Research Project

Project/Area Number 21K06152
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 44010:Cell biology-related
Research InstitutionOsaka University

Principal Investigator

Hamasaki Maho  大阪大学, 大学院生命機能研究科, 准教授 (30455216)

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: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsオートファジー / 分解 / 小胞体 / 小胞体ミトコンドリア接触部位 / ミトコンドリア / 膜動態 / 膜
Outline of Research at the Start

他のオルガネラと異なるオートファゴソームは、必要に応じて形成されるオルガネラである。それゆえ、細胞生物学的に大きな謎の一つである、オルガネラの起源に迫る解析が可能となる。オートファジーを誘導させた時に、オートファゴソームの形成がどのように行われるのか、最新のイメージング技術を駆使し、詳細な観察を積み重ねることで膜の形成機構の分子機構を明らかにしていく。

Outline of Final Research Achievements

In this study, we have elucidated the mechanism of the early steps of autophagosome formation mechanism using state-of-the-art imaging methods, proteomics, and biochemistry. Proteomics of the endoplasmic the secretary pathway has led to the analysis of candidate factors, and we have elucidated how the upstream autophagy-related proteins, which normally reside in the cytoplasm, are translocated to the autophagosome formation site. Next, we analyzed in detail the formation site of the early step of autophagosome membrane formation, and have obtained new findings on the early forming structures in VPS34KO cells using the CLEM method. Also, we narrowed down the candidate factors to three that had strong results in the proteomics of endoplasmic reticulum-mitochondria contact sites.

Academic Significance and Societal Importance of the Research Achievements

オートファジーは細胞内大規模分解システムとして発見され、今では様々な疾患と関わることがわかってきた。オートファジーの分子機構の研究は、今後明らかになっている疾患治療に繋げるためには不可欠である。基礎研究の成果は長期間かかるが必ず将来に生かされる情報である。本研究で明らかにしたオートファジー誘導時の初期機構を明らかにできたことは、オートファジーの亢進や抑制の制御機構にも繋がりうる内容で、将来的に疾患の治療薬の開発につながることが期待される。

Report

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

    (18 results)

All 2023 2022 2021

All Journal Article (10 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 10 results,  Open Access: 9 results) Presentation (6 results) (of which Int'l Joint Research: 3 results,  Invited: 5 results) Funded Workshop (2 results)

  • [Journal Article] Microautophagy regulated by <scp>STK38</scp> and <scp>GABARAPs</scp> is essential to repair lysosomes and prevent aging2023

    • Author(s)
      Ogura Monami、Kaminishi Tatsuya、Shima Takayuki、Torigata Miku、Bekku Nao、Tabata Keisuke、Minami Satoshi、Nishino Kohei、Nezu Akiko、Hamasaki Maho、Kosako Hidetaka、Yoshimori Tamotsu、Nakamura Shuhei
    • Journal Title

      EMBO reports

      Volume: 24 Issue: 12

    • DOI

      10.15252/embr.202357300

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Monitoring and assessment of lysosomal membrane damage in cultured cells using the high-content imager2023

    • Author(s)
      Tabata Keisuke、Saeki Marika、Yoshimori Tamotsu、Hamasaki Maho
    • Journal Title

      STAR Protocols

      Volume: 4 Issue: 2 Pages: 102236-102236

    • DOI

      10.1016/j.xpro.2023.102236

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The P4-ATPase Drs2 interacts with and stabilizes the multisubunit tethering complex TRAPPIII in yeast2023

    • Author(s)
      Irene Pazos, Marta, Laura Betancur, Jorge Cordero, Nereida Jim, Marc Abella, Altair C Hern, Ana G Duran, Emi Adachi-Fern, Carla Belmonte-Mateos, Susana Sabido-Bozo, Akiko Nezu, Baldomero Oliva, Julien Colombelli, Todd R Graham, Tamotsu Yoshimor, Manuel Munis, Maho Hamasaki, Oriol Gallego
    • Journal Title

      EMBO report

      Volume: 24(5) Issue: 5

    • DOI

      10.15252/embr.202256134

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] How cells recognize and remove the perforated lysosome2022

    • Author(s)
      Tabata Keisuke、Saeki Marika、Yoshimori Tamotsu、Hamasaki Maho
    • Journal Title

      Autophagy

      Volume: - Issue: 6 Pages: 1-3

    • DOI

      10.1080/15548627.2022.2138686

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The mechanisms and roles of selective autophagy in mammals2022

    • Author(s)
      Vargas Jose Norberto S.、Hamasaki Maho、Kawabata Tsuyoshi、Youle Richard J.、Yoshimori Tamotsu
    • Journal Title

      Nature Reviews Molecular Cell Biology

      Volume: 24 Issue: 3 Pages: 167-185

    • DOI

      10.1038/s41580-022-00542-2

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Identification of CUL4A-DDB1-WDFY1 as an E3 ubiquitin ligase complex involved in initiation of lysophagy2022

    • Author(s)
      Hirofumi Teranishi, Keisuke Tabata, Marika Saeki, Tetsuo Umemoto, Tomohisa Hatta, Takanobu Otomo, Kentaro Yamamoto, Toru Natsume, Tamotsu Yoshimori, Maho Hamasaki
    • Journal Title

      Cell Reports

      Volume: 40(11) Issue: 11 Pages: 111349-111349

    • DOI

      10.1016/j.celrep.2022.111349

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Degradation of the NOTCH intracellular domain by elevated autophagy in osteoblasts promotes osteoblast differentiation and alleviates osteoporosis2022

    • Author(s)
      Yoshida Gota、Kawabata Tsuyoshi、Takamatsu Hyota、Saita Shotaro、Nakamura Shuhei、Nishikawa Keizo、Fujiwara Mari、Enokidani Yusuke、Yamamuro Tadashi、Tabata Keisuke、Hamasaki Maho、Ishii Masaru、Kumanogoh Atsushi、Yoshimori Tamotsu
    • Journal Title

      Autophagy

      Volume: - Issue: 10 Pages: 1-10

    • DOI

      10.1080/15548627.2021.2017587

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Loss of RUBCN/rubicon in adipocytes mediates the upregulation of autophagy to promote the fasting response2022

    • Author(s)
      Yamamuro Tadashi、Nakamura Shuhei、Yanagawa Kyosuke、Tokumura Ayaka、Kawabata Tsuyoshi、Fukuhara Atsunori、Teranishi Hirofumi、Hamasaki Maho、Shimomura Iichiro、Yoshimori Tamotsu
    • Journal Title

      Autophagy

      Volume: - Issue: 11 Pages: 1-11

    • DOI

      10.1080/15548627.2022.2047341

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] THOC4 regulates energy homeostasis by stabilizing TFEB mRNA during prolonged starvation2021

    • Author(s)
      Fujita T, Kubo S, Shioda T, Tokumura A, Minami S, Tsuchiya M, Ogawa H, Hamasaki M, Yu L, Isaka Y, Yoshimori T, and Nakamura S
    • Journal Title

      Journal of Cell Science

      Volume: 134 Issue: 6 Pages: 248203-248203

    • DOI

      10.1242/jcs.248203

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Rubicon prevents autophagic degradation of GATA4 to promote Sertoli cell function2021

    • Author(s)
      Yamamuro Tadashi et al.,
    • Journal Title

      PLOS Genetics

      Volume: 17 Issue: 8 Pages: e1009688-e1009688

    • DOI

      10.1371/journal.pgen.1009688

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] オートファジーはLAMP2を介し損傷リソソームの除去を行う2023

    • Author(s)
      濱崎万穂
    • Organizer
      日本生化学会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Palmitoylation of ULK1 by ZDHHC13 is required for the initiation of autophagy2022

    • Author(s)
      Maho Hamasaki
    • Organizer
      日本分子生物学会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Palmitoylation of ULK1 by ZDHHC13 is required for the initiation of autophagy2022

    • Author(s)
      Maho Hamasaki
    • Organizer
      International Symposium on Autophagy
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Identification of E3 ligase functions in recognizing damaged lysosomes cleared by autophagy2022

    • Author(s)
      Maho Hamasaki
    • Organizer
      Gordon Research Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Clearance of damaged organelle by autophagy2021

    • Author(s)
      Maho Hamasaki
    • Organizer
      IUPAB
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 小胞体ーミトコンドリア接触部位におけるオートファゴソーム形成2021

    • Author(s)
      Maho Hamasaki
    • Organizer
      第43回神経組織培養研究会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Funded Workshop] 日本分子生物学会2022

    • Related Report
      2022 Research-status Report
  • [Funded Workshop] International Symposium on Autophagy2022

    • Related Report
      2022 Research-status Report

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

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