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Novel RNA-seq analysis reveals RNA regulatory networks in bacteria

Research Project

Project/Area Number 19KK0406
Research Category

Fund for the Promotion of Joint International Research (Fostering Joint International Research (A))

Allocation TypeMulti-year Fund
Review Section Basic Section 49050:Bacteriology-related
Research InstitutionUniversity of Tsukuba

Principal Investigator

Miyakoshi Masatoshi  筑波大学, 医学医療系, 准教授 (60755809)

Project Period (FY) 2020 – 2023
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥15,210,000 (Direct Cost: ¥11,700,000、Indirect Cost: ¥3,510,000)
Keywords転写後調節 / RNA-seq / small RNA / 3´UTR / サルモネラ / 大腸菌
Outline of Research at the Start

細菌は様々な環境で生育するために転写、転写後、翻訳後等の各段階で遺伝子発現を適切に制御する必要があり、その機構を理解することは細菌感染症の抑止に重要である。細菌における転写後調節を司るsmall RNA (sRNA)と同様に、一部のmRNAの3’UTRが遺伝子発現を調節する機能を持つことが明らかになってきている。本研究ではmRNAの3’UTRから派生するsRNAの機能を体系的に解析し、機能性3’UTRの標的RNAを新規RNA-seq法により網羅することで原核生物mRNAの3’UTRを介した制御ネットワークを明らかにする。

Outline of Final Research Achievements

In order to grow in various environments, bacteria appropriately regulate gene expression, and understanding the mechanism is important for preventing bacterial infections. It has been revealed that the 3'UTR of some mRNAs has the function of regulating gene expression, similar to small RNAs (sRNAs) that control post-transcriptional regulation in bacteria. In this study, we aimed to elucidate the function of mRNA 3'UTR in Salmonella and Vibrio cholerae. We comprehensively extracted pairs of transcripts, such as sRNA, mRNA, and tRNA, that form base pairs with mRNA 3'UTR using a new RNA-seq method and analyzed their functions.

Academic Significance and Societal Importance of the Research Achievements

大腸菌、サルモネラ、コレラ菌などの病原性グラム陰性細菌において、mRNA塩基配列から推測された複数の機能性3’UTRを同定した。特にグルタミン合成酵素をコードするglnAから大腸菌、サルモネラそれぞれ異なる塩基配列を持つsRNA GlnZが生成することを明らかにした。窒素飢餓条件でグルタミン合成酵素が発現する際に、そのmRNA 3´UTRからsRNA GlnZが生成し、2-オキソグルタル酸デヒドロゲナーゼの発現を抑制することが明らかになった。また、コレラ菌のsRNA GcvBと塩基対形成する複数のmRNA 3’UTRがGcvBの制御能を抑制するスポンジRNAとして機能することを明らかにした。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (10 results)

All 2024 2023 2022

All Int'l Joint Research (2 results) Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Int'l Joint Research] Friedrich Schiller University of Jena(ドイツ)2023

    • Year and Date
      2023-04-13
    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Helmholtz Institute for RNA-based Infection Research(ドイツ)2022

    • Year and Date
      2022-09-03
    • Related Report
      2023 Annual Research Report
  • [Journal Article] Multilayered regulation of amino acid metabolism in Escherichia coli2024

    • Author(s)
      Miyakoshi Masatoshi
    • Journal Title

      Current Opinion in Microbiology

      Volume: 77 Pages: 102406-102406

    • DOI

      10.1016/j.mib.2023.102406

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Glutamine synthetase mRNA releases sRNA from its 3′UTR to regulate carbon/nitrogen metabolic balance in Enterobacteriaceae2022

    • Author(s)
      Miyakoshi Masatoshi、Morita Teppei、Kobayashi Asaki、Berger Anna、Takahashi Hiroki、Gotoh Yasuhiro、Hayashi Tetsuya、Tanaka Kan
    • Journal Title

      eLife

      Volume: 11

    • DOI

      10.7554/elife.82411

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Diverse regulatory networks of GcvB small RNA associated with the glycine cleavage system2023

    • Author(s)
      Masatoshi Miyakoshi
    • Organizer
      Gordon Research Conference 2023 Mechanisms of Microbial Transcription
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Connecting small RNA regulatory networks with sponge RNAs2023

    • Author(s)
      Masatoshi Miyakoshi
    • Organizer
      7th Meeting on Regulating with RNA in Bacteria and Archaea
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] コレラ菌RIL-seq 解析から明らかになるGcvB small RNA の制御ネ ットワーク2023

    • Author(s)
      越智郁、宮腰昌利
    • Organizer
      第17回日本ゲノム微生物学会年会
    • Related Report
      2022 Research-status Report
  • [Presentation] GcvB small RNAの大腸菌とコレラ菌の比較解析2023

    • Author(s)
      越智郁、宮腰昌利
    • Organizer
      第17回日本ゲノム微生物学会年会
    • Related Report
      2022 Research-status Report
  • [Presentation] 腸内細菌科細菌におけるmRNAから生成するsmall RNAによる転写後調節2023

    • Author(s)
      宮腰昌利
    • Organizer
      第96回日本細菌学会総会
    • Related Report
      2022 Research-status Report
  • [Presentation] Glutamine synthetase mRNA processes a small RNA from its 3´UTR to regulate 2- oxoglutarate dehydrogenase in Salmonella and E. coli2022

    • Author(s)
      Masatoshi Miyakoshi
    • Organizer
      EMBO Workshop BacNet22
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research

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Published: 2020-02-06   Modified: 2025-01-30  

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