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Novel method for controlling "Evolutionary risk management strategy" during genome evolution of pathogenic bacterial by skin microbiota

Research Project

Project/Area Number 17K19544
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Research Field Pathology, Infection/Immunology, and related fields
Research InstitutionChiba University

Principal Investigator

Matsuoka Yuumi  千葉大学, 大学院医学研究院, 講師 (10402067)

Project Period (FY) 2017-06-30 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Keywords皮膚細菌叢 / 黄色ブドウ球菌 / 皮膚 / 細菌ゲノム / トランスクリプトーム / 細菌叢 / 最近ゲノム / ゲノム / アトピー性皮膚炎 / 進化的リスクマネージメント / 常在細菌
Outline of Final Research Achievements

Using the cutaneous S. aureus-infected mouse model, we established a mutation acquisition model for the agr gene region of S. aureus in mice. Using this system, we performed metatranscriptome analysis of bacterial flora, but the results suggest that this mouse model is not suitable for this method. In addition, we further analyzed the mechanism how S. aureus acquired agr mutation in vitro. Studies have shown that agr gene mutations are highly induced under conditions where agr gene expression is frequently turned on and off.

Academic Significance and Societal Importance of the Research Achievements

アトピー性皮膚炎は、先進国で小児の罹患率は15-20%にも達する。一方、途上国ではほとんど認められないという疾患特性から、皮膚バリア機能異常、アレルギー素因などの遺伝的要素に加え、古くからの衛生仮説に代表される環境要因が大きな役割を果たしていると考えられている疾患である。環境要因のひとつとして皮膚常在細菌と病原細菌であるS. aureusの関与が近年注目されている。S. aureusは通常健常人の皮膚で増殖して病原性を発揮することはなく、このメカニズムを解析することで、アトピー性皮膚炎の病態を解明し、新規治療ターゲットの基盤を創出できる可能性があると考えている。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (6 results)

All 2019 2018 2017

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

  • [Journal Article] Staphylococcus aureus Epicutaneous Infection Is Suppressed by Lactococcus lactis Strain Plasma via Interleukin 17A Elicitation.2019

    • Author(s)
      Tsuji R, Fujii T, Nakamura Y, Yazawa K, Kanauchi O.
    • Journal Title

      J Infect Dis

      Volume: 220(5) Issue: 5 Pages: 892-901

    • DOI

      10.1093/infdis/jiz204

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Application of an agr-Specific Antivirulence Compound as Therapy for Staphylococcus aureus-Induced Inflammatory Skin Disease.2018

    • Author(s)
      Baldry M, Nakamura Y, Nakagawa S, Frees D, Matsue H, Nunez G, Ingmer H.
    • Journal Title

      J Infect Dis

      Volume: 218(6) Issue: 6 Pages: 1009-1013

    • DOI

      10.1093/infdis/jiy259

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] The loss-of-function mutations in Staphylococcus agr by gene replication-transcription conflicts result in the defect of skin colonization2019

    • Author(s)
      Rena Oguma, Yuumi Nakamura, Hiroki Takahashi, Akiko Takaya, Yuki Katayama, Yoko Kusuya, Hiroyuki Matsue
    • Organizer
      日本研究皮膚科学会 第44回年次学術大会総会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Cutaneous retention of Staphylococcus agr virulence promotes atopic dermatitis development2018

    • Author(s)
      Yuumi Matsuoka-Nakamura
    • Organizer
      The 2nd Chiba University-UC San Diego Symposium “Mucosal Immunology, Allergy and Vaccine”,
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Cutaneous acquisition of Staphylococcus-sensing agr mutations protects against atopic dermatitis2017

    • Author(s)
      Nakamura Y, Takahashi H, Takaya A, Inoue Y, Katayama Y, Kusuya Y, Oguma R, Yamade F, Shimojo N, Nunez G, Matsue H
    • Organizer
      International Eczema Council at SID meeting
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Protection against atopic dermatitis through acquisition of Staphylococcus quorum-sensing agr mutations in the skin2017

    • Author(s)
      Nakamura Y, Takahashi H, Takaya A, Inoue Y, Katayama Y, Kusuya Y, Oguma R, Yamaide F, Shimojo N, Nunez G, Matsue H
    • Organizer
      第42回日本研究皮膚科学会
    • Related Report
      2017 Research-status Report

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Published: 2017-07-21   Modified: 2021-02-19  

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