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Functional polypeptides encoded by bacterial ribosomal RNA in response to catastrophic stress

Research Project

Project/Area Number 19K22240
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 37:Biomolecular chemistry and related fields
Research InstitutionHokkaido University

Principal Investigator

Sakaguchi Kazuyasu  北海道大学, 理学研究院, 教授 (00315053)

Co-Investigator(Kenkyū-buntansha) 鎌田 瑠泉  北海道大学, 理学研究院, 准教授 (40750881)
Project Period (FY) 2019-06-28 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2020: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2019: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywordsポリペプチド / ストレス / 翻訳 / コーディング / 抗菌活性 / r-Peptide仮説
Outline of Research at the Start

本研究では、rRNAが遺伝子情報を内在的にコードし、生存危機回避などの特殊な状況においてポリペプチドに翻訳されるという仮説の下、原核生物が生存危機環境における自己防衛のために、生命維持に必須で膨大に発現しているrRNA配列由来のポリペプチド(r-peptide)の同定を目指す。また、同定されたr-peptideあるいは推定r-peptideの危機防御における機能解析を行う。このために、生存危機刺激下でのLC-MS/MSによる大腸菌r-peptideの同定、同定あるいは推定r-peptideの機能およびその機構の解明を目指す。

Outline of Final Research Achievements

In recent years, antibiotics have become increasingly important in medicine and society. In this study, we investigated the identification and function of polypeptides derived from rRNA sequences (r-peptides) to elucidate the "r-Peptide" hypothesis that prokaryotic rRNA, which is supposed to be a non-protein-coding RNA, intrinsically encodes genetic information, and is translated into polypeptides under special circumstances such as when survival is threatened. The identification and function of rRNA-derived polypeptides (r-peptides) were studied to elucidate the "r-Peptide" hypothesis. Bioinformatics analysis showed that the r-peptides had specific anti-bacterial activity and provided a mechanistic model for their action. In addition, mass spectrometry analysis suggested the expression of oxidized form of the r-peptide in the presence of the antibiotics.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果は、大腸菌の危機状態対応への進化の解明として大きな意味を持つばかりでなく、医療に対しても極めて重要な意義を持つ。本研究により、原核生物の危機回避メカニズムが解明され、この新規メカニズムに基づいた、全く新しいタイプの抗生物質の開発への展開も期待される。
さらに、本研究は、タンパク質をコードしないノンコーディングRNAとされているrRNAが、特定の条件下で翻訳され機能性ポリペプチドを発現するという、生命科学・分子生物学のセントラルドグマの拡張も示すこととなった。

Report

(3 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • Research Products

    (17 results)

All 2022 2021 2020

All Journal Article (3 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (14 results) (of which Int'l Joint Research: 3 results,  Invited: 5 results)

  • [Journal Article] Role of active site arginine residues in substrate recognition by PPM1A2021

    • Author(s)
      Itsumi Tani, Shogo Ito, Yukiko Shirahata, Yutaka Matsuyama, James G Omichinski, Yasuyuki Shimohigashi, Rui Kamada, Kazuyasu Sakaguchi
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 581 Pages: 1-5

    • DOI

      10.1016/j.bbrc.2021.10.001

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] PPM1D Is a Therapeutic Target in Childhood Neural Tumors2021

    • Author(s)
      Jelena Milosevic, Diana Treis, Susanne Fransson, Gabriel Gallo-Oller, Baldur Sveinbjornsson B, Nina Eissler, Keiji Tanino, Kazuyasu Sakaguchi, Tommy Martinsson, Malin Wickstrom, Per Kogner, John Inge Johnsen
    • Journal Title

      Cancers

      Volume: 13 Issue: 23 Pages: 6042-6062

    • DOI

      10.3390/cancers13236042

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Metal-dependent Ser/Thr protein phosphatase PPM family: evolution, structures, diseases and inhibitors2020

    • Author(s)
      Rui Kamada, Fuki Kudoh, Shogo Ito, Itsumi Tani, Jose Isagani B. Janairo, James G. Omichinski, Kazuyasu Sakaguchi
    • Journal Title

      Pharmacology & Therapeutics

      Volume: 215 Pages: 107622-107622

    • DOI

      10.1016/j.pharmthera.2020.107622

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 新規機能性ペプチドr-Pep2の大腸菌における抗-抗生物質活性機構2022

    • Author(s)
      小俣悠馬、今泉潤也、伊達正広、鎌田瑠泉、坂口和靖
    • Organizer
      化学系学協会北海道支部2022年冬季研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] がんおよび免疫制御関連タンパク質の構造と機能に関する化学的研究2022

    • Author(s)
      鎌田瑠泉
    • Organizer
      日本化学会第102春季年会(2022)
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Effect of Phosphorylation of Nucleolar Protein Nucleophosmin on Nucleolar Formation2021

    • Author(s)
      Itsumi Tani, Shogo Ito, Yui Oikawa, Rui Kamada, Kazuyasu Sakaguchi
    • Organizer
      35th Anniversary Symposium of The Protein Society
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Alterations in the stability and hetero-oligomerization of the p53 family in vertebrates2021

    • Author(s)
      Shuya Sakaguchi, Natsumi Nakagawa, Haytham Wahba, Rui Kamada, James G. Omichinski, Kazuyasu Sakaguchi
    • Organizer
      35th Anniversary Symposium of The Protein Society
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 脊椎動物における癌抑制タンパク質p53とp53ファミリーの四量体構造の進化2021

    • Author(s)
      坂口周弥、中川夏美、鎌田瑠泉、James G. Omichinski、坂口和靖
    • Organizer
      第58回日本生化学会北海道支部例会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 新規抗-抗生物質活性ペプチドr-Pep2の大腸菌における作用機構2021

    • Author(s)
      小俣悠馬、今泉潤也、伊達正広、鎌田瑠泉、坂口和靖
    • Organizer
      日本化学会北海道支部2021年夏季研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] コイルドコイルを介したペプチドの多量体化による生理活性増強効果2021

    • Author(s)
      布川優奈、坂口周弥、碓井拓哉、鎌田瑠泉、坂口和靖
    • Organizer
      日本化学会北海道支部2021年夏季研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 好中球セブセットの分極化におけるSer/Thrホスファターゼ PPM1Dの機能解明2021

    • Author(s)
      鎌田瑠泉
    • Organizer
      第7回北海道大学部局横断シンポジウム
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Anti-antibiotic activity of r-Pep2 derived from putative ORF sequence in E.coli rRNA2021

    • Author(s)
      Yuma Omata, Junya Imaizumi, Rui Kamada, Kazuyasu Sakaguchi
    • Organizer
      第58回ペプチド討論会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Prmt5 methylates tumor suppressor protein p53 to regulate the stability of tetramer2021

    • Author(s)
      Natsumi Nakagawa, Shuya Sakaguchi, Junya Wada, Rui Kamada, Kazuyasu Sakaguchi
    • Organizer
      第58回ペプチド討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Analysis of oligomerized bioactive peptides for eukaryotic and prokaryotic cells2021

    • Author(s)
      Yuna Nunokawa, Shuya Sakaguchi, Rui Kamada, Kazuyasu Sakaguchi
    • Organizer
      第58回ペプチド討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Ser/Thr ホスファターゼPPM1D による好中球サブタイプの多様性制御2021

    • Author(s)
      鎌田瑠泉
    • Organizer
      第94回日本生化学会大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] ANALYSIS OF MECHANISM FOR NOVEL ANTI-ANTIBIOTIC PEPTIDE r-PEP2 AGAINST ESCHERICHIA COLI2020

    • Author(s)
      Junya Imaizumi, Yuma Omata, Natsumi Nakagawa, Rui Kamada, and Kazuyasu Sakaguchi
    • Organizer
      第57回 日本ペプチド討論会
    • Related Report
      2020 Research-status Report
  • [Presentation] Anti-antibiotic Peptide derived from putative ORF in E.coli rRNA2020

    • Author(s)
      Kazuyasu Sakaguchi
    • Organizer
      The 18th Akabori Conference Japanese‐German Symposium on Peptide Science
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2019-07-04   Modified: 2023-01-30  

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