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Investigation of bacterial virulence system via novel RNA binding proteins

Research Project

Project/Area Number 15H04727
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Bacteriology (including mycology)
Research InstitutionThe University of Tokyo

Principal Investigator

KAITO Chikara  東京大学, 大学院薬学系研究科(薬学部), 准教授 (60420238)

Co-Investigator(Kenkyū-buntansha) 松本 靖彦  東京大学, 薬学研究科(研究院), 助教 (60508141)
Research Collaborator SEKIMIZU kazuhisa  
Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2017: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2015: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
KeywordsリボソームRNA / メチル化酵素 / ヌクレオチド分解酵素 / CPDase / 芳香族アミノ酸 / 環状ヌクレオチド / 感染症 / 2Hホスホエステラーゼスーパーファミリー / 高温耐性 / 細菌 / 微生物 / 遺伝子 / ヌクレオシド二リン酸 / ヌクレオチド / 黄色ブドウ球菌 / ヌクレアーゼ / 溶血毒素 / agr
Outline of Final Research Achievements

Staphylococcus aureus is a human pathogenic bacterium and causes clinical problems of drug resistance. To find novel therapeutic agents, it is important to understand the virulence mechanism of S. aureus. In this research project, we tried to identify novel virulence factors of S. aureus from hypothetical genes whose products are assumed to interact with RNA or nucleotide. We found that three rRNA methyltransferases and a nucleotide hydrolase contribute to S. aureus virulence. Investigations of these novel virulence factors have revealed new mechanism of S. aureus virulence via RNA and nucleotide.

Academic Significance and Societal Importance of the Research Achievements

本研究は、RNAの修飾酵素とヌクレオチド分解酵素が細菌の病原性において重要な働きをすることを初めて見出した。細菌の病原性発現に関わる因子を同定し、その分子機能を解明することは、細菌がヒトを含む多細胞生物の体内に侵入し、増殖し、危害をもたらすメカニズムを理解するという学術的意義がある。また、本研究で同定した病原性因子群は、細菌の病原性を抑制する新しいタイプの感染症治療薬のターゲットとして利用可能であり、薬剤の標的分子を提示した点で社会上の意義がある。

Report

(4 results)
  • 2018 Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (18 results)

All 2018 2017 2016 2015 Other

All Int'l Joint Research (1 results) Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 3 results,  Acknowledgement Compliant: 3 results) Presentation (12 results) (of which Int'l Joint Research: 3 results,  Invited: 6 results)

  • [Int'l Joint Research] University of Toronto(Canada)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Isolation of antibiotic-producing <i>Pseudomonas</i> species with low-temperature cultivation of temperate soil2017

    • Author(s)
      Mitsutomi S, Sekimizu K, Kaito C
    • Journal Title

      Drug Discoveries & Therapeutics

      Volume: 11 Issue: 5 Pages: 267-275

    • DOI

      10.5582/ddt.2017.01053

    • NAID

      130006210826

    • ISSN
      1881-7831, 1881-784X
    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Novel nucleoside diphosphatase contributes to Staphylococcus aureus virulence2016

    • Author(s)
      Imae K, Saito Y, Kizaki H, Ryuno H, Mao H, Miyashita A, Suzuki Y, Sekimizu K, Kaito C
    • Journal Title

      J Biol Chem.

      Volume: 291 Issue: 36 Pages: 18608

    • DOI

      10.1074/jbc.m116.721845

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cell-surface phenol soluble modulins regulate staphylococcus aureus colony spreading2016

    • Author(s)
      Kizaki, H., Omae, Y., Tabuchi, F., Saito, Y., Sekimizu, K., and Kaito, C.
    • Journal Title

      PLoS One

      Volume: 11 Issue: 10 Pages: e0164523-e0164523

    • DOI

      10.1371/journal.pone.0164523

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] 16S rRNA methyltransferase KsgA contributes to oxidative stress resistance and virulence in Staphylococcus aureus2015

    • Author(s)
      Kyuma T, Kizaki H, Ryuno H, Sekimizu K, Kaito C
    • Journal Title

      Biochimie

      Volume: 119 Pages: 166

    • DOI

      10.1016/j.biochi.2015.10.027

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Ribosomal RNA methyltransferases contribute to Staphylococcus aureus virulence2015

    • Author(s)
      Kyuma T, Kimura S, Hanada Y, Suzuki T, Sekimizu K, Kaito C
    • Journal Title

      FEBS J.

      Volume: 282 Issue: 13 Pages: 2570

    • DOI

      10.1111/febs.13302

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] A Novel Group of Cyclic Nucleotide Phosphodiesterase Confers Heat Resistance in Bacteria2018

    • Author(s)
      光冨修平、関水和久、垣内力
    • Organizer
      第91回日本細菌学会総会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Silkworm infection model to investigate the staphylococcal virulence system2018

    • Author(s)
      Chikara Kaito
    • Organizer
      Workshop to Understand Staphylococcus aureus Pathogenesis
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 人為的進化系を利用した細菌の病原性システムの理解2017

    • Author(s)
      垣内力
    • Organizer
      生命科学系学会合同年次大会 ConBio2017 シンポジウム
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] 黄色ブドウ球菌の菌体表層における毒素の機能2017

    • Author(s)
      垣内 力
    • Organizer
      第90回日本細菌学会総会
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Understanding of bacterial virulence using an insect infection model2017

    • Author(s)
      Chikara Kaito
    • Organizer
      先進ゲノム支援 国際シンポジウム「The Start of New Genomics」
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Microbe-host interactions revealed using the silkworm infection model2016

    • Author(s)
      垣内 力
    • Organizer
      第89回日本細菌学会総会 シンポジウム
    • Place of Presentation
      大阪国際交流センター、大阪府大阪市
    • Year and Date
      2016-03-24
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] 昆虫モデルを用いて解明する細菌の病原性発動システム2016

    • Author(s)
      垣内 力
    • Organizer
      第99回日本細菌学会関東支部会総会
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Role of Cell Surface Phenol Soluble Modulins in Staphylococcus aureus Colony Spreading2016

    • Author(s)
      Hayato Kizaki, Yosuke Omae, Yuki Saito, Kazuhisa Sekimizu, Chikara Kaito
    • Organizer
      The 17th International Symposium on Staphylococci and Staphylococcal Infections
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 黄色ブドウ球菌コロニースプレッティングにおける菌体表層のPSM毒素の役割2015

    • Author(s)
      木崎 速人、大前 陽輔、齊藤 祐樹、関水 和久、垣内 力
    • Organizer
      第60回日本ブドウ球菌研究会
    • Place of Presentation
      広島大学東京オフィス、東京都港区
    • Year and Date
      2015-09-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] 黄色ブドウ球菌の病原性発現に働くヌクレオシド二リン酸分解酵素に関する研究2015

    • Author(s)
      今江 健太、齋藤 祐樹、木崎 速人、毛 瀚、立野 浩輝、宮下 惇嗣、関水 和久、垣内 力
    • Organizer
      第14回次世代を担う若手ファーマ・バイオフォーラム2015
    • Place of Presentation
      千葉大学亥鼻キャンパス、千葉県千葉市
    • Year and Date
      2015-09-12
    • Related Report
      2015 Annual Research Report
  • [Presentation] 新規RNA結合タンパク質群による細菌の病原性発現機構の解明2015

    • Author(s)
      垣内 力、松本 靖彦
    • Organizer
      新学術領域「ゲノム支援」2015年度 拡大班会議
    • Place of Presentation
      国立京都国際会館、京都府京都市
    • Year and Date
      2015-08-27
    • Related Report
      2015 Annual Research Report
  • [Presentation] 昆虫モデルを利用した細菌ー宿主相互作用の解明2015

    • Author(s)
      垣内 力
    • Organizer
      生物の共生進化を考える(昆虫共生酵母研究会主催シンポジウム)
    • Place of Presentation
      島根大学、島根県松江市
    • Year and Date
      2015-06-02
    • Related Report
      2015 Annual Research Report
    • Invited

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Published: 2015-04-16   Modified: 2020-03-30  

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