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Study on sRNA involved in the establishment of Bordetella pertussis infection

Research Project

Project/Area Number 19K16638
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 49050:Bacteriology-related
Research InstitutionOsaka University

Principal Investigator

Hiramatsu Yukihiro  大阪大学, 微生物病研究所, 助教 (90739210)

Project Period (FY) 2019-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords百日咳 / small RNA / sRNA
Outline of Research at the Start

百日咳菌はBvgAS二成分制御系と呼ばれる環境応答システムによって病原因子の発現を調節し、感染を成立させていると考えられてきた。しかし、近年のin vivo研究において、様々な矛盾が指摘されている。申請者は、これまでにin vivoにおける病原因子の制御機構に着目し、タンパク質の発現を転写後レベルで制御するnon-coding small RNA(sRNA)の発現量が宿主感染時に大幅に増加していることを見出した。本研究では、百日咳菌感染時のsRNA発現の調節機構と当該sRNAによって制御される因子を解析することで、新たな観点から百日咳菌の感染成立機構の理解を目指す。

Outline of Final Research Achievements

The virulence of Bordetella pertussis had long been considered to be regulated by the BvgAS two-component system, the master regulator for gene expression involved in the bacterial pathogenicity. In this study, we focused on small RNA (sRNA) that were highly expressed during B. pertussis infection, and indicated that an sRNA designated Bpr4 post-transcriptionally up-regulates the expression of filamentous hemagglutinin (FHA), a major adhesin of B. pertussis, in a BvgAS-independent manner, and eventually plays a role in the establishment of the bacterial infection.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果から、これまで知られていなかった百日咳菌のin vivoにおけるsRNAによる病原性発現調節機構の一端が明らかとなった。百日咳菌の宿主への感染に関与するsRNAの報告はこれまでになく、本菌の感染成立機構の理解に新たな側面を付け加えることができたと考えている。さらに、sRNAを中心とした宿主感染時の百日咳菌の病原性発現機構の理解は、百日咳の新たな病原性制御法の開発に貢献するものと期待できる。

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (15 results)

All 2021 2020 2019 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (9 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Remarks (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Identification of the minimum region of Bordetella pertussis Vag8 required for interaction with C1 inhibitor2020

    • Author(s)
      Onoda Naoki、Hiramatsu Yukihiro、Teruya Shihono、Suzuki Koichiro、Horiguchi Yasuhiko
    • Journal Title

      Microbiology and Immunology

      Volume: 64 Issue: 8 Pages: 570-573

    • DOI

      10.1111/1348-0421.12799

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Expression of small RNAs of Bordetella pertussis colonizing murine tracheas2020

    • Author(s)
      Hiramatsu Yukihiro、Suzuki Koichiro、Motooka Daisuke、Nakamura Shota、Horiguchi Yasuhiko
    • Journal Title

      Microbiology and Immunology

      Volume: - Issue: 6 Pages: 469-475

    • DOI

      10.1111/1348-0421.12791

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Bordetella Dermonecrotic Toxin Is a Neurotropic Virulence Factor That Uses CaV3.1 as the Cell Surface Receptor.2020

    • Author(s)
      Teruya S, Hiramatsu Y, Nakamura K, Fukui-Miyazaki A, Tsukamoto K, Shinoda N, Motooka D, Nakamura S, Ishigaki K, Shinzawa N, Nishida T, Sugihara F, Maeda Y, Horiguchi Y.
    • Journal Title

      mBio

      Volume: 11 Issue: 2 Pages: 03146-19

    • DOI

      10.1128/mbio.03146-19

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Bordet‐Gengou agar medium supplemented with albumin‐containing biologics for cultivation of bordetellae2019

    • Author(s)
      Hiramatsu Yukihiro、Osada‐Oka Mayuko、Horiguchi Yasuhiko
    • Journal Title

      Microbiology and Immunology

      Volume: 63 Issue: 12 Pages: 513-516

    • DOI

      10.1111/1348-0421.12742

    • NAID

      40022103554

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] マウス咳発症モデルを用いた百日咳の咳発作発症機構の解明2021

    • Author(s)
      平松征洋、鈴木孝一朗、西田隆司、堀口安彦
    • Organizer
      第93回日本細菌学会総会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 宿主感染時に高発現する百日咳菌small RNAの機能解析2020

    • Author(s)
      平松征洋、鈴木孝一朗、堀口安彦
    • Organizer
      第73回日本細菌学会関西支部総会
    • Related Report
      2020 Annual Research Report
  • [Presentation] マウスモデルから見た百日咳における咳発作発症機構2020

    • Author(s)
      平松征洋、鈴木孝一朗、西田隆司、堀口安彦
    • Organizer
      第73回日本細菌学会関西支部総会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 新規発光システムを用いた気管支敗血症菌感染のin vivoイメージング手法の構築2020

    • Author(s)
      玉木優生、西田隆司、平松征洋、堀口安彦
    • Organizer
      第73回日本細菌学会関西支部総会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Modification of Bordet-Gengou agar medium for cultivation of bordetellae2020

    • Author(s)
      平松征洋、岡真優子、堀口安彦
    • Organizer
      第93回日本細菌学会総会
    • Related Report
      2019 Research-status Report
  • [Presentation] ボルデテラ属細菌培養用Bordet-Gengou培地の改良2019

    • Author(s)
      平松征洋、岡真優子、堀口安彦
    • Organizer
      第72回日本細菌学会関西支部総会
    • Related Report
      2019 Research-status Report
  • [Presentation] ボルデテラ壊死毒(DNT)の受容体同定を通じた百日咳病態の解析2019

    • Author(s)
      照屋志帆乃、平松征洋、篠田典子、塚本健太郎、中村佳司、石垣佳祐、堀口安彦
    • Organizer
      第66回トキシンシンポジウム
    • Related Report
      2019 Research-status Report
  • [Presentation] Identification of Bordetella dermonecrotic toxin receptor2019

    • Author(s)
      平松征洋、照屋志帆乃、中村佳司、福井理、塚本健太郎、堀口安彦
    • Organizer
      第18回あわじ感染と免疫国際フォーラム
    • Related Report
      2019 Research-status Report
  • [Presentation] Identification of Bordetella dermonecrotic toxin receptor2019

    • Author(s)
      Shihono Teruya、Yukihiro Hiramastu、Noriko Shinoda、Kentaro Tsukamoto、Keiji Nakamura、Aya Fukui-Miyazaki、Keisuke Ishigaki、Yasuhiko Horiguchi
    • Organizer
      ETOX19
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Remarks] 大阪大学微生物病研究所 分子細菌学分野

    • URL

      http://bactox1.biken.osaka-u.ac.jp/LabWeb/

    • Related Report
      2019 Research-status Report
  • [Patent(Industrial Property Rights)] 百日咳に対する鎮咳薬および百日咳に対する鎮咳薬のスクリーニング法2019

    • Inventor(s)
      堀口安彦、平松征洋
    • Industrial Property Rights Holder
      堀口安彦、平松征洋
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2019-087332
    • Filing Date
      2019
    • Related Report
      2019 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2022-01-27  

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