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Mechanisms and physiological significance of mRNA degradation associated with spatial localization of nascent polypeptide chains

Research Project

Project/Area Number 20K15748
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 43030:Functional biochemistry-related
Research InstitutionOsaka University (2021-2023)
Kyoto University (2020)

Principal Investigator

Ishii Eiji  大阪大学, 微生物病研究所, 助教 (10835698)

Project Period (FY) 2020-04-01 – 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 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)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords翻訳アレスト / RNase / 遺伝子発現 / ビブリオ菌 / RNA分解 / 新生ポリペプチド鎖 / RNA / 遺伝子発現制御 / ribonuclease / RNaseE / 細胞内局在 / SRP / Sec secretion system
Outline of Research at the Start

ヒトのような真核生物では、細胞におけるタンパク質の量や種類といった挙動に影響を与えるのはmRNAの量だけではなく、細胞内のmRNA分子が存在する場所も重要な要素であることが知られている。一方、ヒト細胞よりはるかに小さい細菌では、細胞内のmRNAの局在はそれらに影響を及ぼさないと考えられてきた。近年の研究により細菌でも多くのmRNAが細胞内の特定の位置に局在することが報告されているが、その詳細な分子機構や生理的な意味合いは明らかとなっていない。本研究の目的は海洋性ビブリオ菌のタンパク質の細胞内局在依存的なmRNAの量的制御に着目し、その分子機構や生理的な意味合いとの関連に焦点を当てて研究を行う。

Outline of Final Research Achievements

In eukaryotes such as humans, transcription, translation, and mRNA degradation occur in distinct subcellular regions. On the other hand, in prokaryotic cells, where there are few "spatial delimiters," factors involved in transcription, translation, and mRNA degradation are coexistent in a single space, and it is still unclear how the organization of gene expression is maintained in such an environment. By following the mRNA dynamics of genes whose protein expression is regulated by translational arrest, this study shows that regulation of translation frequency by secondary structure and translation state on mRNA enables rapid and appropriately timed gene expression in response to the environment.

Academic Significance and Societal Importance of the Research Achievements

原核細胞では一つの空間で転写、翻訳、mRNAの分解に関わる因子が混在しているにもかかわらずその遺伝子発現制御は緻密なネットワークを形成し様々な環境シグナルに応答しててなされている。細菌におけるこのような遺伝子発現がどのようにして組織されているかは未だ不明な点がおおい。本研究では、翻訳アレストというリボソームの異端な挙動を介してmRNAの動態がどのようにして変容し、遺伝子発現に影響を与えるかを明らかにした。これまで翻訳アレストに伴ったmRNA動態に関する報告は少なく、この結果は、複雑な細菌の遺伝子発現のメカニズムを理解するうえで意義深い研究成果であると考える。

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

    (21 results)

All 2024 2023 2022 2021

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (18 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Journal Article] The read-through transcription-mediated autoactivation circuit for virulence regulator expression drives robust type III secretion system 2 expression in Vibrio parahaemolyticus2024

    • Author(s)
      Anggramukti Dhira Saraswati、Ishii Eiji、Pratama Andre、Al Kadi Mohamad、Iida Tetsuya、Kodama Toshio、Matsuda Shigeaki
    • Journal Title

      PLOS Pathogens

      Volume: 20 Issue: 3 Pages: e1012094-e1012094

    • DOI

      10.1371/journal.ppat.1012094

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Xenogeneic Silencer Histone-Like Nucleoid-Structuring Protein Mediates the Temperature and Salinity-Dependent Regulation of the Type III Secretion System 2 in Vibrio parahaemolyticus2022

    • Author(s)
      Pratama A, Ishii E, Kodama T, Iida T and Matsuda S
    • Journal Title

      Journal of Bacteriology

      Volume: 205 Issue: 1

    • DOI

      10.1128/jb.00266-22

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Direct RNA Sequencing Unfolds the Complex Transcriptome of Vibrio parahaemolyticus2021

    • Author(s)
      Al Kadi M, Ishii E, Truong DT, Motooka D, Matsuda S, Iida T, Kodama T, Okuzaki D
    • Journal Title

      mSystems

      Volume: 6 Issue: 6

    • DOI

      10.1128/msystems.00996-21

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] The regulatory circuit of type III secretion system 2 genes in Vibrio parahaemolyticus2023

    • Author(s)
      Dhira Saraswati Anggramukti, Eiji Ishii, Andre Pratama, Mohamad Al kadi, Tetsuya Iida, Toshio Kodama and Shigeaki Matsuda
    • Organizer
      57th United States - Japan Cooperative Medical Science Program -Joint Panel Conference on Cholera and Other Bacterial Enteric Infections
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Single-Cell Analysis Of iPSC-Derived Organoids as Model to Study Host-Pathogen Interaction2023

    • Author(s)
      M. Al kadi, M. Ishikawa, S. Matsuda, Y. Liu, S. Sato, E. Ishii, S. Sakakibara, T. Kodama and D. Okuzaki
    • Organizer
      第46回分子生物学会年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] A positive regulatory loop of a virulence regulator gene linked by read-through transcription ensures pathogenicity in Vibrio parahaemolyticus2023

    • Author(s)
      Dhira Saraswati Anggramukti, Eiji Ishii, Andre Pratama, Mohamad Al kadi, Tetsuya Iida, Toshio Kodama and Shigeaki Matsuda
    • Organizer
      第76回日本細菌学会関西支部総会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Read-through transcription-mediated positive autoregulation of VtrB drives robust type III secretion system 2 expression in Vibrio parahaemolyticus2023

    • Author(s)
      Dhira Saraswati Anggramukti, Eiji Ishii, Andre Pratama, Mohamad Al kadi, Tetsuya Iida, Toshio Kodama and Shigeaki Matsuda
    • Organizer
      第55回ビブリオシンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] The regulatory circuit of type III secretion system 2 genes ensures virulence in Vibrio parahaemolyticus2023

    • Author(s)
      Dhira Saraswati Anggramukti, Eiji Ishii, Andre Pratama, Mohamad Al kadi, Tetsuya Iida, Toshio Kodama and Shigeaki Matsuda
    • Organizer
      第21回あわじ感染と免疫国際フォーラム
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 腸炎ビブリオの病原性遺伝子島を制御する転写因子VtrBの遠位プロモーターによる正の自己制御機構の解析2023

    • Author(s)
      Dhira Saraswati Anggramukti、石井英治、児玉年央、Andre Pratama、Al kadi Mohamad、 飯田哲也、松田重輝
    • Organizer
      第19回21世紀大腸菌研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] H-NSによる腸炎ビブリオⅢ型分泌装置2遺伝子群の温度・塩分濃度依存的な発現制御機構2022

    • Author(s)
      Andre Pratama, 石井英治、児玉年央、飯田哲也、松田重輝
    • Organizer
      第18回21世紀大腸菌研究会
    • Related Report
      2022 Research-status Report
  • [Presentation] A global regulator H-NS mediates temperature- and salinity-dependent regulation of type III secretion system 2 in Vibrio parahaemolyticus2022

    • Author(s)
      Andre Pratama, Eiji Ishii, Toshio Kodama, Tetsuya Iida, Shigeaki Matsuda
    • Organizer
      第20回あわじ感染と免疫国際フォーラム
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Annotation of Bacterial Transcriptome Using Direct RNA Sequencing2022

    • Author(s)
      Mohamad Al Kadi, Eiji Ishii, Shigeaki Matsuda, Tetsuya Iida,Toshio Kodama, Daisuke Okuzaki
    • Organizer
      第54回ビブリオシンポジウム
    • Related Report
      2022 Research-status Report
  • [Presentation] A global regulator H-NS mediates temperature- and salinity-dependent regulation of type III secretion system 2 in Vibrio parahaemolyticus2022

    • Author(s)
      Andre Pratama, Eiji Ishii, Toshio Kodama, Tetsuya Iida, Shigeaki Matsuda
    • Organizer
      第54回ビブリオシンポジウム
    • Related Report
      2022 Research-status Report
  • [Presentation] A global regulator H-NS mediates temperature- and salinity-dependent regulation of type III secretion system 2 in Vibrio parahaemolyticus2022

    • Author(s)
      Andre Pratama, Eiji Ishii, Toshio Kodama, Tetsuya Iida, Shigeaki Matsuda
    • Organizer
      第75回日本細菌学会関西支部総会
    • Related Report
      2022 Research-status Report
  • [Presentation] Genome-wide mining of non-coding RNAs in the food-borne pathogen Vibrio parahaemolyticus using direct RNA sequencing2022

    • Author(s)
      Mohamad Al kadi, Shigeaki Matsuda, Eiji Ishii, Hiroyuki Terashima, Tetsuya Iida, Daisuke Okuzaki, Toshio Kodama
    • Organizer
      第45回日本分子生物学会年会
    • Related Report
      2022 Research-status Report
  • [Presentation] 翻訳アレストペプチドVemPを介した遺伝子発現制御における転写産物の動態解析2022

    • Author(s)
      石井英治、秋山芳展、森博幸
    • Organizer
      第45回日本分子生物学会年会
    • Related Report
      2022 Research-status Report
  • [Presentation] ビブリオ属細菌における翻訳アレストを介した遺伝子発現制御2022

    • Author(s)
      石井 英治,松田 重輝,飯田 哲也,秋山 芳展,森 博幸
    • Organizer
      第96回日本細菌学会総会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Transcriptome Complexity of Vibrio parahaemolyticus revealed by direct RNA sequencing2022

    • Author(s)
      アルカディ ムハッマド,石井 英治,Tat Truong Dang,元岡 大祐, 松田 重輝,飯田 哲也,児玉 年央,奥崎 大介
    • Organizer
      第96回日本細菌学会総会
    • Related Report
      2022 Research-status Report
  • [Presentation] H-NS mediates temperature- and salinity-dependent regulation of T3SS2 in Vibrio parahaemolyticus2022

    • Author(s)
      Andre Pratama,石井 英治,児玉 年央,飯田 哲也,松田 重輝
    • Organizer
      第96回日本細菌学会総会
    • Related Report
      2022 Research-status Report
  • [Presentation] The complex landscape of Vibrio parahaemolyticus transcriptome.2022

    • Author(s)
      Mohamad Al Kadi, 石井英治、Dang Tat Truong、元岡大祐、松田重輝、飯田哲也、児玉年央、奥崎大介
    • Organizer
      第95回日本細菌学会総会
    • Related Report
      2021 Research-status Report
  • [Presentation] Xenogeneic silencing-mediated regulation of T3SS2 in Vibrio parahaemolyticus2022

    • Author(s)
      Andre Pratama, 石井英治、児玉年央、飯田哲也、松田重輝
    • Organizer
      第95回日本細菌学会総会
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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