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Searching for environmental signals sensed by group A streptococcal two-component systems

Research Project

Project/Area Number 21791786
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Morphological basic dentistry
Research InstitutionOsaka University

Principal Investigator

NAKATA Masanobu  Osaka University, 大学院・歯学研究科, 助教 (90444497)

Project Period (FY) 2009 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2010: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2009: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords二成分制御系 / 病原因子 / 環境応答 / 転写調節 / レンサ球菌
Research Abstract

Streptococcus pyogenes (group A streptococci; GAS) is a human pathogen responsible for a wide variety of diseases that ranges from self-limiting purulent infections such as pharyngitis, tonsillitis, and impetigo to severe necrotizing fasciitis and autoimmune diseases including acute rheumatic fever and glomerulonephritis. To successfully evade host immune responses and cause such diverse diseases, GAS might acclimate to environmental changes and control the expression of a variety of genes including virulence genes. In this study, deletion mutants of genes encoding both histidine kinases and response regulators were constructed in a background of a serotype M3 GAS strain. Utilizing these mutant strains and a silkworm infection model, we revealed that several two-component systems are crucial for GAS pathogenesis. Moreover, analysis of the virulence gene expression in mutant strains under several culture conditions indicated specific environmental signals are sensed by two-component systems.

Report

(3 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • Research Products

    (33 results)

All 2011 2010 2009 Other

All Journal Article (10 results) (of which Peer Reviewed: 10 results) Presentation (20 results) Book (1 results) Remarks (2 results)

  • [Journal Article] Pili of oral Streptococcus sanguinis bind to salivary amylase and promote the biofilm formation.2011

    • Author(s)
      Okahashi N, Nakata M, Terao Y, Isoda R, Sakurai A, Sumitomo T, Yamaguchi M, Kimura RK, Oiki E, Kawabata S, Ooshima T.
    • Journal Title

      Microb Pathog 50(3-4)

      Pages: 148-154

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Streptolysin S contributes to group A streptococcal translocation across an epithelial barrier.2011

    • Author(s)
      Sumitomo T, Nakata M, Higashino M, Jin Y, Terao Y, Fujinaga Y, Kawabata S.
    • Journal Title

      J Biol Chem 286(4)

      Pages: 2750-2761

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Streptolysin S contributes to group A streptococcal translocation across an epithelial barrier2011

    • Author(s)
      Sumitomo, I., Nakata, M., Higashino, M., Jin, Y., Terao, Y., Fujinaga, Y., Kawabata, S.
    • Journal Title

      Journal of Biological Chemistry

      Volume: 286 Pages: 2750-2761

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Pili of oral Streptococcus sanguinis bind to salivary amylase and promote the biofilm formation2011

    • Author(s)
      Okahashi, N., Nakata, M., Terao, Y., Isoda, R., Sakurai, A., Sumitomo, T., Yamaguchi, M., Kimura, R.K., Oiki, E., Kawabata, S., Ooshima, T.
    • Journal Title

      Microbial Pathogenesis

      Volume: 50 Pages: 148-154

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Pili of oral Streptococcus sanguinis bind to fibronectin and contribute to cell adhesion.2010

    • Author(s)
      Okahashi N, Nakata M, Sakurai A, Terao Y, Hoshino T, Yamaguchi M, Isoda R, Sumitomo T, Nakano K, Kawabata S, Ooshima T.
    • Journal Title

      Biochem Biophys Res Commun 391(2)

      Pages: 1192-1196

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Mode of expression and functional characterization of FCT-3 pilus region encoded proteins in the Streptococcus pyogenes serotype M49.2009

    • Author(s)
      Nakata M, Koller T, Moritz K, Ribardo D, Jonas L, McIver KS, Sumitomo T, Terao Y, Kawabata S, Podbielski A, Kreikemeyer B.
    • Journal Title

      Infect Immun 77(1)

      Pages: 32-44

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] M-protein and other intrinsic virulence factors of Streptococcus pyogenes are encoded on an ancient pathogenicity island.2009

    • Author(s)
      Panchaud A, Guy L, Collyn F, Haenni M, Nakata M, Podbielski A, Moreillon P, Roten CA.
    • Journal Title

      BMC Genomics 10

      Pages: 198-198

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] M-protein and other intrinsic virulence factors of Streptococcus pyogenes are encoded on an ancient pathopenicity island.2009

    • Author(s)
      Panchaud, A.
    • Journal Title

      BMC Genomics 10

      Pages: 198-198

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Pili of oral Streptococcus sanguinis bind to fibroncctin and contribute to cell adhesion.2009

    • Author(s)
      Okahashi, N.
    • Journal Title

      Biochemical and Biophysical Research Communications 391

      Pages: 1192-1196

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mode of expression and functional characterization of FCT-3 pilus region encoded proteins in the Streptococcus pyogenes serotype M49.2009

    • Author(s)
      Nakata, M.
    • Journal Title

      Infection and Immunity 77

      Pages: 32-34

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Presentation] M6型A群レンサ球菌が産生する線毛の形成機構と機能の解析2010

    • Author(s)
      木村敬次リチャード, 中田匡宣, 住友倫子, 寺尾豊, 磯田竜太朗, 川端重忠
    • Organizer
      第63回日本細菌学会関西支部総会
    • Place of Presentation
      関西医科大学
    • Year and Date
      2010-11-20
    • Related Report
      2010 Final Research Report
  • [Presentation] M6型A群レンサ球菌が産生する線毛の形成機構と機能の解析2010

    • Author(s)
      木村敬次リチャード, 中田匡宣, 住友倫子, 寺尾豊, 磯田竜太朗, 川端重忠
    • Organizer
      第63回日本細菌学会関西支部総会
    • Place of Presentation
      関西医科大学(大阪府)
    • Year and Date
      2010-11-20
    • Related Report
      2010 Annual Research Report
  • [Presentation] A群レンサ球菌の上皮バリア突破機構に関与する宿主プロテアーゼの検索2010

    • Author(s)
      住友倫子, 中田匡宣, 東野美晴, 寺尾豊, 川端重忠
    • Organizer
      第8回感染症沖縄フォーラム
    • Place of Presentation
      沖縄国民年金健康センター
    • Year and Date
      2010-02-12
    • Related Report
      2010 Final Research Report
  • [Presentation] Streptolysin S contributes to group A streptococcal paracellular translocation across epithelial cells.2010

    • Author(s)
      Sumitomo T, Nakata M, Terao Y, Kawabata S.
    • Organizer
      The 10th Awaji International Forum on Infection and Immunity.
    • Place of Presentation
      Awaji, Hyogo, Japan.
    • Related Report
      2010 Final Research Report
  • [Presentation] Streptolysin S contributes to group A streptococcal paracellular translocation across epithelial cells.2010

    • Author(s)
      住友倫子, 中田匡宣, 寺尾豊, 川端重忠
    • Organizer
      第62回日本細胞生物学会大会
    • Place of Presentation
      大阪国際会議場
    • Related Report
      2010 Final Research Report
  • [Presentation] 口腔レンサ球菌S.sanguinis線毛piliの機能2010

    • Author(s)
      岡橋暢夫, 中田匡宣, 桜井敦朗, 寺尾豊, 山口雅也, 星野倫範, 川端重忠, 大嶋隆
    • Organizer
      第83回日本細菌学会総会
    • Place of Presentation
      パシフィコ横浜
    • Related Report
      2010 Final Research Report
  • [Presentation] 宿主細胞間接着分子の破壊に関与するA群レンサ球菌プロテアーゼの検索2010

    • Author(s)
      東野美晴, 住友倫子, 中田匡宣, 寺尾豊, 川端重忠
    • Organizer
      第83回日本細菌学会総会
    • Place of Presentation
      パシフィコ横浜
    • Related Report
      2010 Final Research Report
  • [Presentation] A群レンサ球菌の上皮バリア突破機構に関与する宿主プロテアーゼの解析2010

    • Author(s)
      住友倫子, 中田匡宣, 東野美晴, 寺尾豊, 川端重忠
    • Organizer
      第83回日本細菌学会総会
    • Place of Presentation
      パシフィコ横浜
    • Related Report
      2010 Final Research Report
  • [Presentation] A群レンサ球菌が産生する線毛の細胞壁架橋機構の解析2010

    • Author(s)
      中田匡宣, 住友倫子, 磯田竜太朗, 寺尾豊, 川端重忠
    • Organizer
      第83回日本細菌学会総会
    • Place of Presentation
      パシフィコ横浜
    • Related Report
      2010 Final Research Report
  • [Presentation] Streptolysin S contributes to group A streptococcal paracellular translocation across epithelial cells.2010

    • Author(s)
      住友倫子, 中田匡宣, 寺尾豊, 川端重忠
    • Organizer
      第62回日本細胞生物学会大会
    • Place of Presentation
      大阪国際会議場(大阪市)
    • Related Report
      2010 Annual Research Report
  • [Presentation] Streptolysin S contributes to group A streptococcal paracellular translocation across epithelial cells.2010

    • Author(s)
      Sumitomo, T., Nakata, M., Terao, Y., Kawabata, S.
    • Organizer
      The 10th Awaji International Forum on Infection and Immunity
    • Place of Presentation
      淡路夢舞台国際会議場(兵庫県)
    • Related Report
      2010 Annual Research Report
  • [Presentation] A群レンサ球菌が産生する線毛の細胞壁架橋機構の解析2010

    • Author(s)
      中田匡宣
    • Organizer
      第83回日本細菌学会総会
    • Place of Presentation
      パシフィコ横浜(横浜市)
    • Related Report
      2009 Annual Research Report
  • [Presentation] A群レンサ球菌の上皮バリア突破機構に関与する宿主プロテアーゼの解析2010

    • Author(s)
      住友倫子
    • Organizer
      第83回日本細菌学会総会
    • Place of Presentation
      パシフィコ横浜(横浜市)
    • Related Report
      2009 Annual Research Report
  • [Presentation] 宿主細胞間接着分子の破壊に関与するA群レンサ球菌プロテアーゼの検索2010

    • Author(s)
      東野美晴
    • Organizer
      第83回日本細菌学会総会
    • Place of Presentation
      パシフィコ横浜(横浜市)
    • Related Report
      2009 Annual Research Report
  • [Presentation] 口腔レンサ球菌S. Sanguinis線毛piliの機能2010

    • Author(s)
      岡橋暢夫
    • Organizer
      第83回日本細菌学会総会
    • Place of Presentation
      パシフィコ横浜(横浜市)
    • Related Report
      2009 Annual Research Report
  • [Presentation] A群レンサ球菌が産生する線毛の発現機構の解析2009

    • Author(s)
      中田匡宣, 寺尾豊, 川端重忠
    • Organizer
      第51回歯科基礎医学会学術大会
    • Place of Presentation
      朱鷺メッセ,新潟市
    • Related Report
      2010 Final Research Report
  • [Presentation] Group A Streptococci translocates across epithelial barrier via intercellular junction cleavage.2009

    • Author(s)
      Sumitomo T, Nakata M, Terao Y, Kawabata S.
    • Organizer
      109th General Meeting of American Society for Microbiology.
    • Place of Presentation
      Philadelphia, USA.
    • Related Report
      2010 Final Research Report
  • [Presentation] Group A Streptococci translocates across epithelial barrier via intercellular junction eleavage.2009

    • Author(s)
      Sumitomo, T.
    • Organizer
      109th General Meeting of American Society for Microbiology
    • Place of Presentation
      Philadelphia, USA
    • Related Report
      2009 Annual Research Report
  • [Presentation] A群レンサ球菌が産生する線毛の発現機構の解析2009

    • Author(s)
      中田匡宣
    • Organizer
      第51回歯科基礎医学会学術大会
    • Place of Presentation
      朱鷺メッセ(新潟市)
    • Related Report
      2009 Annual Research Report
  • [Presentation] A群レンサ球菌の上皮バリア突破機構に関与する宿主プロテアーゼの検索2009

    • Author(s)
      住友倫子
    • Organizer
      第7回感染症沖縄フォーラム
    • Place of Presentation
      沖縄国民年金健康センター(那覇市)
    • Related Report
      2009 Annual Research Report
  • [Book] 口腔内微生物の網羅的検出.歯界展望.116(4)2010

    • Author(s)
      中田匡宣, 川端重忠
    • Publisher
      医歯薬出版
    • Related Report
      2010 Annual Research Report
  • [Remarks] ホームページ等

    • URL

      http://www.dent.osaka-u.ac.jp/~mcrbio

    • Related Report
      2010 Final Research Report
  • [Remarks]

    • URL

      http://www.dent.osaka-u.ac.jp/~mcrbio

    • Related Report
      2010 Annual Research Report

URL: 

Published: 2009-04-01   Modified: 2016-04-21  

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