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Investigation of membrane vesicle formation mechanisms in Corynebacterium glutamicum

Research Project

Project/Area Number 19K15726
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 38020:Applied microbiology-related
Research InstitutionUniversity of Tsukuba (2019, 2021-2022)
The University of Tokyo (2020)

Principal Investigator

Nagakubo Toshiki  筑波大学, 生命環境系, 助教 (20826961)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords膜小胞 / コリネ型細菌 / 鉄 / コリネ菌 / ミコール酸含有細菌 / 物質生産 / グルタミン酸生産菌 / 放線菌 / メンブレンベシクル
Outline of Research at the Start

本研究では、放線菌の一種であるグルタミン酸生産菌Corynebacterium glutamicumにおける、メンブレンベシクル(MV)産生のメカニズムの解明とその物質生産への応用を目的とする。本研究を遂行するために、本申請者は生化学的な手法とイメージング技術を駆使したアプローチをとる。本菌のMVの組成を網羅的に調べた上で、最先端の顕微鏡を用いてMVがつくられる様子を視覚的にとらえることで、そのメカニズムの全貌を明らかにする。MVは、新たな代謝産物排出系としての応用可能性を有するため、本研究の成果は、本菌を含む放線菌を用いた物質生産の効率化にブレイクスルーをもたらすことが期待できる。

Outline of Final Research Achievements

In this research project, novel insights into the mechanisms of membrane vesicle (MV) formation in Corynebacterium glutamicum and the biological function of the C. glutamicum MVs were obtained. It was shown that C. glutamicum forms and releases various MVs through different routes. Further, we also found that the MVs derived from outer mycomembrane can load ferric iron and the iron ion loaded with MVs can be received by the cells. From these results, a role of C. glutamicum MVs in acquisition of external iron is suggested. Additionally, this may lead to a MV-based approach to control metabolic pathways of C. glutamicum which depends on the availability of external iron.

Academic Significance and Societal Importance of the Research Achievements

本研究課題を通じて得られた成果は、微生物が産生する膜小胞の形成メカニズムおよび生物学的機能に関する重要な知見を提供した。Corynebacterium glutamicumは、病原細菌である結核菌などを含むミコール酸含有細菌群に属しており、この菌群が産生する膜小胞の機能に注目が集まっている一方で、これまでその産生メカニズムは明らかになっていなかった。また、本研究成果ではCorynebacterium glutamicumが膜小胞を介して細胞外の鉄を獲得する可能性も示唆されており、これは産業上重要な本菌の生育や代謝を制御する上での新たなアプローチにつながる知見となりうる。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (10 results)

All 2023 2021 Other

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (6 results) (of which Int'l Joint Research: 2 results) Remarks (2 results)

  • [Journal Article] Iron delivery through membrane vesicles in Corynebacterium glutamicum2023

    • Author(s)
      Kayuki Kawashima (equal contribution), Toshiki Nagakubo (equal contribution), Nobuhiko Nomura, Masanori Toyofuku
    • Journal Title

      Microbiology Spectrum

      Volume: in press Issue: 3 Pages: 0-0

    • DOI

      10.1128/spectrum.01222-23

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mycolic acid-containing bacteria trigger distinct types of membrane vesicles through different routes2021

    • Author(s)
      Nagakubo Toshiki、Tahara Yuhei O.、Miyata Makoto、Nomura Nobuhiko、Toyofuku Masanori
    • Journal Title

      iScience

      Volume: 24 Issue: 1 Pages: 102015-102015

    • DOI

      10.1016/j.isci.2020.102015

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Corynebacterium glutamicumの膜小胞を介した鉄獲得の解析2021

    • Author(s)
      川島花雪、永久保利紀、野村暢彦、豊福雅典
    • Organizer
      2021年度日本農芸化学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Corynebacterium glutaimicumが産生する膜小胞の機能解析2021

    • Author(s)
      川島花雪、永久保利紀、野村暢彦、豊福雅典
    • Organizer
      2021年度グラム陽性菌ゲノム機能会議
    • Related Report
      2021 Research-status Report
  • [Presentation] Corynebacterium glutamicumにおける膜小胞を介した鉄輸送の解析2021

    • Author(s)
      川島花雪、永久保利紀、野村暢彦、豊福雅典
    • Organizer
      第73回日本生物工学会沖縄大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Membrane vesicles-mediated iron acquisition in Corynebacterium glutamicum.2021

    • Author(s)
      Kayuki Kawashima, Toshiki Nagakubo, Nobuhiko Nomura, Masanori Toyofuku
    • Organizer
      EMBO Workshop 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] コリネ型細菌が放出する膜小胞を介した鉄輸送の解析2021

    • Author(s)
      川島花雪、永久保利紀、野村暢彦、豊福雅典
    • Organizer
      2022年度日本農芸化学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Corynebacterium glutamicum recruit membrane vesicles for iron acquisition.2021

    • Author(s)
      Kayuki Kawashima, Toshiki Nagakubo, Nobuhiko Nomura, Masanori Toyofuku
    • Organizer
      12th Asian Symposium on Microbial Ecology
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Remarks] 微生物が多様な膜小胞を作る仕組みを解明

    • URL

      https://www.tsukuba.ac.jp/journal/biology-environment/20210115010000.html

    • Related Report
      2020 Research-status Report
  • [Remarks] 微生物が多様な膜小胞を作る仕組みを解明

    • URL

      https://www.jst.go.jp/pr/announce/20210115/index.html

    • Related Report
      2020 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2024-01-30  

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