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Elucidation of the translocation mechanism of M. pneumoniae across the human bronchial epithelial barrier.

Research Project

Project/Area Number 16K19619
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Infectious disease medicine
Research InstitutionKurume University

Principal Investigator

Yamamoto Takeshi  久留米大学, 医学部, 講師 (20632566)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords肺炎マイコプラズマ / Mycoplasma pneumoniae / 上皮バリア / M. pneumoniae / 細胞死 / 肺外疾患
Outline of Final Research Achievements

Mycoplasma pneumoniae infection is known to be accompanied by a variety of complications called extrapulmonary manifestations with a frequency of about 25%, and the translocation of M. pneumoniae to the extrapulmonary site is thought to be partly involved in the development of these extrapulmonary diseases. In this study, we investigated the translocation mechanism of M. pneumoniae across the human bronchial epithelial barrier, and found M. pneumoniae translocates through paracellular or transcellular route without affecting epithelial barrier integrity.

Academic Significance and Societal Importance of the Research Achievements

肺炎マイコプラズマの感染経路は主に経気道飛沫感染であるが、呼吸器症状の有無によらず、肺外疾患においても同様に呼吸器が本菌の主要な侵入部位となると考えられている。そのため肺外疾患においても、気道上皮のバリア機構は肺炎マイコプラズマの最初の侵入障壁として機能しており、その通過メカニズムの解明は肺炎マイコプラズマによる肺外疾患の制御基盤の構築に不可欠であるといえる。本研究の成果はその一助となることが期待される。

Report

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

    (7 results)

All 2019 2017 2016

All Journal Article (3 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (4 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Mycoplasma pneumoniae protects infected epithelial cells from hydrogen peroxide-induced cell detachment2019

    • Author(s)
      Yamamoto Takeshi、Kida Yutaka、Kuwano Koichi
    • Journal Title

      Cellular Microbiology

      Volume: 21 Issue: 6 Pages: e13015-e13015

    • DOI

      10.1111/cmi.13015

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mpn491, a secreted nuclease of Mycoplasma pneumoniae, plays a critical role in evading killing by neutrophil extracellular traps2017

    • Author(s)
      Yamamoto, T., Kida, Y., Sakamoto, Y., Kuwano, K.
    • Journal Title

      Cell. Microbiol.

      Volume: 19 Issue: 3 Pages: 1-11

    • DOI

      10.1111/cmi.12666

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 肺炎マイコプラズマの分泌型ヌクレアーゼは好中球のNETsによる殺菌の回避に重要である2016

    • Author(s)
      山本武司、木田豊、坂本勇一、桑野剛一
    • Journal Title

      日本マイコプラズマ学会雑誌

      Volume: 43 Pages: 62-63

    • Related Report
      2016 Research-status Report
  • [Presentation] Mycoplasma pneumoniae prevents staurosporine-induced apoptosis in murine macrophage cell line, J774A.12017

    • Author(s)
      山本武司、木田豊、坂本勇一、桑野剛一
    • Organizer
      第90回日本細菌学会総会
    • Place of Presentation
      仙台
    • Year and Date
      2017-03-19
    • Related Report
      2016 Research-status Report
  • [Presentation] Mpn491を標的としたマイコプラズマ肺炎ワクチンおよび治療薬2017

    • Author(s)
      山本武司
    • Organizer
      題30回インターフェックスジャパン
    • Related Report
      2017 Research-status Report
  • [Presentation] 肺炎マイコプラズマの分泌型ヌクレアーゼは好中球のNETsによる殺菌の回避に重要である2016

    • Author(s)
      山本武司、木田豊、坂本勇一、桑野剛一
    • Organizer
      第43回日本マイコプラズマ学会学術集会
    • Place of Presentation
      長崎
    • Year and Date
      2016-06-24
    • Related Report
      2016 Research-status Report
  • [Presentation] Mpn491, a secretory nuclease of Mycoplasma pneumoniae is important for escaping NETs-mediated killing of neutrophils2016

    • Author(s)
      Yamamoto T, Kida Y, Sakamoto Y, Kuwano K
    • Organizer
      The 13th Korea - Japan International Symposium on Microbiology
    • Place of Presentation
      Gyeongju, Korea
    • Year and Date
      2016-05-12
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2020-03-30  

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