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Cross-sectional analysis of infectious strategies of enteric bacterial pathogens

Research Project

Project/Area Number 16H05186
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Bacteriology (including mycology)
Research InstitutionTokyo Medical and Dental University (2017-2018)
Chiba University (2016)

Principal Investigator

ASHIDA HIROSHI  東京医科歯科大学, 大学院医歯学総合研究科, 准教授 (10535115)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2018: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2017: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2016: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Keywordsエフェクター / 細胞死 / 腸管病原菌 / 腸管病原細菌 / 赤痢菌 / 病原細菌 / 自然免疫
Outline of Final Research Achievements

In this study, we have identified bacterial strategy that counteracts host cell death. Shigella effector A targets host proteins for degradation to inhibit necroptosis of infected epithelial cells, and promote bacterial colonization. Furthermore, by comparing another enteric bacterial pathogens, we have revealed that inhibition of necroptosis by effector A homologs seems to be a universal infectious strategy for enteric bacterial pathogens.

Academic Significance and Societal Importance of the Research Achievements

本研究では、感染様式の異なる複数の腸管病原菌を用い、その感染現象を横断的に比較解析し、共通する感染戦略を解明した。本研究により得られた知見は幅広い腸管病原細菌を標的とする創薬・ワクチン開発へとつながることが期待される。

Report

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

    (12 results)

All 2019 2018 2017 2016

All Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 2 results,  Acknowledgement Compliant: 1 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results)

  • [Journal Article] Gut pathobionts underlie intestinal barrier dysfunction and liver T helper 17 cell immune response in primary sclerosing cholangitis.2019

    • Author(s)
      Nakamoto N, Sasaki N, Aoki R, Miyamoto K, Suda W, Teratani T, Suzuki T, Koda Y, Chu PS, Taniki N, Yamaguchi A, Kanamori M, Kamada N, Hattori M, Ashida H, Sakamoto M, Atarashi K, Narushima S, Yoshimura A, Honda K, Sato T, Kanai T.
    • Journal Title

      Nat Microbiol.

      Volume: 4 Issue: 3 Pages: 492-503

    • DOI

      10.1038/s41564-018-0333-1

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Shigella effector IpaH4.5 targets 19S regulatory subunit RPN13 in the 26S proteasome to dampen cytotoxic T lymphocyte activation.2019

    • Author(s)
      Otsubo R, Mimura H, Ashida H, Hamazaki J, Murata S, Sasakawa C.
    • Journal Title

      Cell Microbiol.

      Volume: 21 Issue: 3 Pages: e12974-e12974

    • DOI

      10.1111/cmi.12974

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Porphyromonas gingivalis triggers NLRP3-mediated inflammasome activation of macrophages in a bacterial gingipains-independent manner.2018

    • Author(s)
      Tokuju Okano, Hiroshi Ashida, Shiho Suzuki, Mikio Shoji, Koji Nakayama, Toshihiko Suzuki,
    • Journal Title

      Eur. J. Immunol.

      Volume: 48 Issue: 12 Pages: 1965-1974

    • DOI

      10.1002/eji.201847658

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 赤痢菌による自然免疫抑制戦略の解明2017

    • Author(s)
      芦田 浩、鈴木 敏彦、笹川 千尋
    • Journal Title

      化学療法の領域

      Volume: 33 Pages: 1281-1288

    • Related Report
      2017 Annual Research Report
  • [Journal Article] 病原細菌によるインフラマソーム制御戦略2017

    • Author(s)
      芦田 浩、鈴木 志穂、鈴木 敏彦
    • Journal Title

      細胞

      Volume: 49 Pages: 695-699

    • Related Report
      2017 Annual Research Report
  • [Journal Article] Bacterial E3 ligase effectors exploit host ubiquitin systems2017

    • Author(s)
      Ashida H & Sasakawa C
    • Journal Title

      Curr Opin in Microbiol

      Volume: 35 Pages: 16-22

    • DOI

      10.1016/j.mib.2016.11.001

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] The interaction analysis between microbiota and bacterial pathogens2018

    • Author(s)
      Hiroshi Ashida, Chihiro Sasakawa, Toshihiko Suzuki
    • Organizer
      The 17th Awaji International Forum of Infection and Immunity
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 腸管病原細菌感染戦略の横断的解析2018

    • Author(s)
      芦田 浩、笹川 千尋、鈴木 敏彦
    • Organizer
      第22回腸管出血性大腸菌感染症研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Analysis of novel Shigella effector mechanism that regulate host cell death2018

    • Author(s)
      Hiroshi Ashida, Toshihiko Suzuki
    • Organizer
      第47回日本免疫学会学術集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 赤痢菌による新たな細胞死制御機構の解明2018

    • Author(s)
      芦田 浩、鈴木 敏彦
    • Organizer
      第91回日本細菌学会総会
    • Related Report
      2017 Annual Research Report
  • [Presentation] ワクチンおよび抗生物質代替創薬開発の基盤となる腸管病原細菌感染マウスモデルの構築とその機能解析2017

    • Author(s)
      芦田 浩、鈴木 敏彦、笹川 千尋
    • Organizer
      2017年度生命科学系学会合同年次大会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] EHECマウス腸管感染モデルの構築とその解析2016

    • Author(s)
      芦田 浩、笹川 千尋
    • Organizer
      第20回 腸管出血性大腸菌(EHEC)感染症研究会
    • Place of Presentation
      富山県民共生センターサンフォルテ
    • Year and Date
      2016-11-10
    • Related Report
      2016 Annual Research Report

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Published: 2016-04-21   Modified: 2021-01-27  

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