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ER exit site formation is regulated by phosphorylation modification

Research Project

Project/Area Number 19K21188
Project/Area Number (Other) 18H06063 (2018)
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund (2019)
Single-year Grants (2018)
Review Section 0702:Biology at cellular to organismal levels, and related fields
Research InstitutionAkita University

Principal Investigator

Maeda Miharu  秋田大学, 医学系研究科, 助教 (40823422)

Project Period (FY) 2018-08-24 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords分泌 / 小胞体 / ER exit site / TANGO1 / Sec16 / CK1δ / リン酸化 / リン酸化修飾
Outline of Research at the Start

ER exit siteは1細胞あたり数百個存在する小胞体上の分泌小胞形成ドメインである。ER exit siteは様々な細胞外環境によって数や形態が変化し、この制御の破綻はがんをはじめとした疾患に関与することが報告されている。しかし、ER exit site自体の形成メカニズムについては、特に高等真核生物において知見が乏しい。
研究代表者はこれまで、ER exit siteにおいてTANGO1がSec16と協調的にER exit siteの形成に関与することを明らかにしてきた。本研究はTANGO1のエピジェネティック制御がER exit siteのダイナミクスに与える影響を明らかにする。

Outline of Final Research Achievements

In this study, we used super-resolution confocal live imaging microscopy (SCLIM) to investigate the localization of endogenous proteins, and we identified domains abundant in transmembrane complexes (TANGO1/cTAGE5/Sec12) juxtaposed to Sec16. Interestingly, this domain can be distinguished from the inner and the outer coats of CopII proteins within each mammalian ER exit site.
Moreover, we identified that Casein Kinase 1delta (CK1delta) directly phosphorylates TANGO1 and reduces the interaction between TANGO1 and Sec16 leading to disassembly of ER exit sites.

Academic Significance and Societal Importance of the Research Achievements

ER exit siteは近年、分泌の調節点として機能することが明らかになりつつある。本研究による成果は、分泌の出発点であるER exit siteについて基礎的な知見をもたらした。また、ER exit siteの構成がTANGO1のリン酸化修飾に関連することを示唆している。これらの結果は、ER exit siteの形成制御がシグナル経路等の下流において制御される可能性を示唆しており、これまで不明だったER exit siteの環境応答メカニズム解明につながると期待される。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Annual Research Report
  • Research Products

    (14 results)

All 2021 2020 2019 2018 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (8 results) (of which Int'l Joint Research: 3 results) Remarks (2 results)

  • [Journal Article] Mitotic ER Exit Site Disassembly and Reassembly Are Regulated by the Phosphorylation Status of TANGO12020

    • Author(s)
      Maeda Miharu、Komatsu Yukie、Saito Kota
    • Journal Title

      Developmental Cell

      Volume: 55 Issue: 2 Pages: 237-250.e5

    • DOI

      10.1016/j.devcel.2020.07.017

    • NAID

      130008001624

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mitotic ER exit site dynamics: insights into blockade of secretion from the ER during mitosis2020

    • Author(s)
      Maeda Miharu、Komatsu Yukie、Saito Kota
    • Journal Title

      Molecular & Cellular Oncology

      Volume: 7 Issue: 6 Pages: 1832420-1832420

    • DOI

      10.1080/23723556.2020.1832420

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Not just a cargo receptor for large cargoes; an emerging role of TANGO1 as an organizer of ER exit sites2019

    • Author(s)
      Saito Kota、Maeda Miharu
    • Journal Title

      The Journal of Biochemistry

      Volume: 166 Issue: 2 Pages: 115-119

    • DOI

      10.1093/jb/mvz036

    • NAID

      40021974856

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] COPII proteins exhibit distinct subdomains within each ER exit site for executing their functions2019

    • Author(s)
      Maeda Miharu、Kurokawa Kazuo、Katada Toshiaki、Nakano Akihiko、Saito Kota
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 7346-7346

    • DOI

      10.1038/s41598-019-43813-3

    • NAID

      120007169371

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 細胞分裂期における分泌停止メカニズムの解明2021

    • Author(s)
      前田 深春、小松 幸恵、齋藤 康太
    • Organizer
      第94回日本薬理学会年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Mitotic ER exit site dissociation and reassembly are regulated by phosphorylation status of TANGO12019

    • Author(s)
      Maeda,M., Komatsu, Y., Saito, K.
    • Organizer
      Gordon Research Conferences, Molecular Membrane Biology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] cTAGE5 acts as a Sar1 GTPase regulator for collagen export2019

    • Author(s)
      Maeda, M.,Sasaki,N., Shiraiwa, M., Yorimitsu, T., Sato, K., Katada, T., Saito, K.
    • Organizer
      Gordon Research Conferences, Molecular Membrane Biology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 細胞周期に応じたリン酸化による分泌調節機構2019

    • Author(s)
      前田 深春、小松 幸恵、齋藤 康太
    • Organizer
      第70回日本薬理学会北部会
    • Related Report
      2019 Research-status Report
  • [Presentation] Regulation of the Sar1 GTPase cycle is necessary for collagen secretion from the endoplasmic reticulum2018

    • Author(s)
      Miharu Maeda, Kota Saito
    • Organizer
      American Society for Matrix Biology
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Phosphorylation of TANGO1 regulates localization and function of ER exit sites2018

    • Author(s)
      前田 深春、堅田 利明、齋藤 康太
    • Organizer
      第70回 日本細胞生物学会 第51回 日本発生生物学会 合同大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 小胞体出芽ドメイン形成の種間保存性と相違性について2018

    • Author(s)
      齋藤 康太、前田 深春、小松 幸恵
    • Organizer
      第69回 薬理学会北部会
    • Related Report
      2018 Annual Research Report
  • [Presentation] TANGO1はSec16と協調的にER exit siteの形成制御機構に関与する2018

    • Author(s)
      前田 深春、齋藤 康太
    • Organizer
      第17回 生命科学研究会
    • Related Report
      2018 Annual Research Report
  • [Remarks]

    • URL

      http://www.med.akita-u.ac.jp/department/gs/kenkyu-org/kouza/yakuri.html

    • Related Report
      2020 Annual Research Report
  • [Remarks] 秋田大学大学院医学系研究科 情報制御学・実験治療学講座

    • URL

      https://www.med.akita-u.ac.jp/department/gs/kenkyu-org/kouza.php?koza=yakuri

    • Related Report
      2019 Research-status Report

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Published: 2018-08-27   Modified: 2024-03-26  

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