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Regulatory mechanisms of type III secretion system by molecular chaperones and proteases in Salmonella enterica serovar Typhimurium.

Research Project

Project/Area Number 15590055
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Biological pharmacy
Research InstitutionChiba University

Principal Investigator

TOMOYASU Toshifumi  Chiba University, Graduate School of Pharmaceutical Sciences, Department of Microbiology and Molecular Genetics, Assoc.Professor, 大学院・薬学研究院, 助教授 (20323404)

Co-Investigator(Kenkyū-buntansha) YAMAMOTO Tomoko  Chiba University, Graduate School of Pharmaceutical Sciences, Department of Microbiology and Molecular Genetics, Professor, 大学院・薬学研究院, 教授 (60110342)
TAKAYA Akiko  Chiba University, Graduate School of Pharmaceutical Sciences, Department of Microbiology and Molecular Genetics, Res.Associate, 大学院・薬学研究院, 助手 (80334217)
Project Period (FY) 2003 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2004: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2003: ¥1,900,000 (Direct Cost: ¥1,900,000)
KeywordsSalmonella / TTSS / AAA+ protease / chaperone / Lon / ClpXP / DnaK / Dathogenic factor
Research Abstract

Salmonella enterica serovar Typhimurium, similar to various facultative intracellular pathogens, has been shown to respond to the hostile conditions inside macrophages of the host organism by inducing stress proteins. The stress proteins are functionally divided into two groups, molecular chaperones and proteases. We showed molecular chaperones and proteases have an important function for the Salmonella Pathogenicity.
(1)Regulatory mechanisms of type III secretion system (TTSS) by AAA+ protease family
We showed that the heat shock proteases ClpXP and Lon are essentially involved in systemic infection with S.enterica serovar Typhimurium in BALB/c mice. ClpXP and Lon are required for the survival and growth of S.enterica serovar Typhimurium within macrophages. We reported that ClpXP and Lon control the expression of two TTSSs in S.enterica serovar Typhimurium in which one is encoded by flagellar regulon and another is by Salmonella Pathogenicity Island 1(SPI1).
(2)Regulatory mechanisms of TTSS by molecular chaperone
Macrophage survival assays revealed that the DnaK/DnaJ-depleted mutant could not survive or proliferate at all within macrophages. This mutant could neither invade cultured epithelial cells nor secrete any of the invasion proteins encoded within SPI1. We also showed that the DnaK/DnaJ-depleted mutant could not secrete flagellar proteins and SPI2 effector proteins encoded by TTSSs.
(3)Development of Salmonella live vaccine.
Immunization with the ClpXP-or Lon-deficient strain protected mice against oral challenge with the S. enterica serovar Typhimurium virulent strain. Both the challenged virulent and immunized avirulent salmonellae were completely cleared from the spleen, mesenteric lymph nodes, Peyer's patches, and even cecum 5 days after the challenge. Our data indicated that Salmonella with a disruption of the ATP-dependent protease ClpXP or Lon could be useful in developing a live vaccine strain.

Report

(3 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • Research Products

    (19 results)

All 2005 2004 2003 Other

All Journal Article (14 results) Publications (5 results)

  • [Journal Article] Depression of Salmonella pathogenicity island 1 genes within macrophages leads to rapid apoptosis via caspase-1- and caspase-3-dependent pathways.2005

    • Author(s)
      Takaya A, Suzuki A, Kikuchi Y, Eguchi M, Isogai E, Tomoyasu T, Yamamoto T.
    • Journal Title

      Cell Microbiol 7

      Pages: 79-90

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Derepression of Salmonella pathogenicity island 1 genes within macrophages leads to rapid apoptosis via caspase-1-and caspase-3-dependent pathways.2005

    • Author(s)
      Takaya A, Suzuki A, Kikuchi Y, Eguchi M, Isogai E, Tomoyasu T, Yamamoto T.
    • Journal Title

      Cell Microbiol 7(1)

      Pages: 79-90

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Derepression of Salmonella pathogenicity island 1 genes within macrophages leads to rapid apoptosis via caspase-1- and caspase-3-dependent pathways.2005

    • Author(s)
      Takaya A, Suzuki A, Kikuchi Y, Eguchi M, Isogai E, Tomoyasu T, Yamamoto T.
    • Journal Title

      Cell Microbiol. 7・1

      Pages: 79-90

    • Related Report
      2004 Annual Research Report
  • [Journal Article] The DnaK/DnaJ Chaperone Machinery of Salmonella enterica Serovar Thyphimurium Is Essential for Invasion of Epitherial Cells and Survival within Macrophages, Leading to Systemic infection.2004

    • Author(s)
      Takaya A, Tomoyasu T, Matsui H, Yamamoto T.
    • Journal Title

      Infect.Immun. 72

      Pages: 1364-1373

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] The DnaK/DnaJ Chaperone Machinery of Salmonella enterica Serovar Thyphimurium Is Essential for Invasion of Epitherial Cells and Survival within Macrophages, Leading to Systemic infection.2004

    • Author(s)
      Takaya A, Tomoyasu T, Matsui H, Yamamoto T.
    • Journal Title

      Infect.Immun. 72(3)

      Pages: 1364-1373

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] The DnaK/DnaJ Chaperone Machinery of Salmonella enterica Serovar Thyphimurium is Essential for Invasion of Epitherial Cells and Survival within Macrophages, Leading to Systemic infection.2004

    • Author(s)
      Takaya A, Tomoyasu T, Matsui H, Yamamoto T.
    • Journal Title

      Infect.Immun. 72・3

      Pages: 1364-1373

    • Related Report
      2004 Annual Research Report
  • [Journal Article] A new heat-shock gene agsA, which encodes a small chaperone invloved in suppressing protein aggregation in Salmonella entrica serovar Typhimurium.2003

    • Author(s)
      Tomoyasu T, Takaya A, Sasaki T, Nagase T, Kikuno R, Morioka M, Yamamoto T
    • Journal Title

      J.Bacteriol. 185

      Pages: 6331-6339

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Turnover of F1hD and F1hC, master regulator proteins for Salmonella flagellum biogenesis, by the ATP-dependent ClpXP protease.2003

    • Author(s)
      Tomoyasu T, Takaya A, Isogai E, Yamamoto T
    • Journal Title

      Mol.Microbiol. 48

      Pages: 443-452

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Lon, a stress-induced ATP-dependent protease is critically important for the systemic Salmonella infection of mice.2003

    • Author(s)
      Takaya A, Suzuki M, Matsui H, Tomoyasu T, Sashinami H, Nakane A, Yamamoto T.
    • Journal Title

      Infect.Immun. 71

      Pages: 690-696

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Oral immunization with ATP-dependent protease-deficient mutants protects mice against subsequent oral challenge with virulent Salmonella enterica serovar Typhimurium.2003

    • Author(s)
      Matsui H, Suzuki M, Isshiki Y, Eguchi M, Kikuchi Y, Motokawa K, Takaya A, Tomyasu T, Yamamoto T.
    • Journal Title

      Infect.Immun. 71

      Pages: 30-39

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] A new heat-shock gene agsA, which encodes a small chaperone involved in suppressing protein aggregation in Salmonella entrica serovar Typhimurium.2003

    • Author(s)
      Tomoyasu T, Takaya A, Sasaki T, Nagase T, Kikuno R, Morioka M, Yamamoto T.
    • Journal Title

      J.Bacteriol. 185(21)

      Pages: 6331-6339

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Turnover of FlhD and FlhC, master regulator proteins for Salmonella flagellum biogenesis, by the ATP-dependent ClpXP protease.2003

    • Author(s)
      Tomoyasu T, Takaya A, Isogai E, Yamamoto T.
    • Journal Title

      Mol.Microbiol. 48(2)

      Pages: 443-452

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Lon, a stress-induced ATP-dependent protease is critically important for the systemic Salmonella infection of mice.2003

    • Author(s)
      Takaya A, Suzuki M, Matsui H, Tomoyasu T, Sashinami H, Nakane A, Yamamoto T.
    • Journal Title

      Infect.Immun. 71(2)

      Pages: 690-696

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Oral immunization with ATP-dependeht protease-deficient mutants protects mice against subsequent oral challenge with virulent Salmonella enterica serovar Typhimurium.2003

    • Author(s)
      Matsui H, Suzuki M, Isshiki Y, Eguchi M, Kikuchi Y, Motokawa K, Takaya A, Tomoyasu T, Yamamoto T.
    • Journal Title

      Infect.Immun. 71(1)

      Pages: 30-39

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Publications] Takaya A: "The Dnak/DnaJ Chaperone Machinery of Salmonella enterica Serovar Thyphimurium Is Essential for Invasion of Epitherial Cells and Survival within Macrophages, Leading to Systemic infection"Infect.Immun.. 72. 1364-1373 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tomoyasu T: "A new heat-shock gene agsA, which encodes a small chaperone involved in suppressing protein aggregation in Salmonella entrica serovar Typhimurium."J.Bacteriol.. 185. 6331-6339 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tomoyasu T: "Turnover of FlhD and FIhC, master regulator proteins for Salmonella flagellum biogenesis, by the ATP-dependent ClpXP protease."Mol.Microbiol.. 48. 443-452 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Takaya A: "Lon, a stress-induced ATP-dependent protease is critically important for the systemic Salmonella infection of mice."Infect.Immun.. 71. 690-696 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Matsui H: "Oral immunization with ATP-dependent protease-deficient mutants protects mice against subsequent oral challenge with virulent Salmonella enterica serovar Typhimurium."Infect.Immun.. 71. 30-39 (2003)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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