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Role of TLR signaling and chemokine in liver regeneration, and their application to accelerated regeneration

Research Project

Project/Area Number 16390385
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Digestive surgery
Research InstitutionHYOGO COLLEGE OF MEDICINE

Principal Investigator

IIMURO Yuji  HYOGO COLLEGE OF MEDICINE, Faculty of Medicine, Associate Professor, 医学部, 助教授 (30252018)

Co-Investigator(Kenkyū-buntansha) FUJIMOTO Jiro  HYOGO COLLEGE OF MEDICINE, Faculty of Medicine, Professor, 医学部, 教授 (90199373)
IWASAKI Tsuyoshi  HYOGO COLLEGE OF MEDICINE, Faculty of Medicine, Associate Professor, 医学部, 助教授 (10151721)
TSUTSUI Hiroko  HYOGO COLLEGE OF MEDICINE, Faculty of Medicine, Professor, 医学部, 教授 (40236914)
IIBOSHI Yasuhiko  HYOGO COLLEGE OF MEDICINE, Faculty of Medicine, Research Associate, 医学部, 助手 (10340994)
HIRANO Tadamichi  HYOGO COLLEGE OF MEDICINE, Faculty of Medicine, Research Associate, 医学部, 助手 (90340968)
Project Period (FY) 2004 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥14,300,000 (Direct Cost: ¥14,300,000)
Fiscal Year 2005: ¥6,800,000 (Direct Cost: ¥6,800,000)
Fiscal Year 2004: ¥7,500,000 (Direct Cost: ¥7,500,000)
KeywordsToll-like receptor / liver regeneration / MyD88 / innate immunity / NF-κB / SDF-1 / 骨髄移植 / 肝硬変
Research Abstract

Toll-like receptors (TLRs) act as innate immune signal sensors and play central roles in host defense. Myeloid differentiation factor (MyD) 88 is a common adaptor molecule required for signaling mediated by TLRs. When the receptors are activated, cells bearing TLRs produce various proinflammatory cytokines in a MyD88-dependent manner. Liver regeneration following partial hepatectomy (PH) requires innate immune responses, particularly interleukin-6 (IL-6) and tumor necrosis factor α (TNF-α) production by Kupffer cells, although the recognition and activation processes are still unknown.
We investigated whether TLR/MyD88 signaling is critical for induction of innate immune responses after PH. In Myd88-/- mice after PH, induction of expression of immediate early genes involved in hepatocyte replication and phosphorylation of STAT3 in the liver, and production of TNF-α/IL-6 by and activation of NF-κB in the Kupffer cells were grossly subnormal and were associated with impaired liver regeneration. However, TLR2, 4 and 9, which recognize gram-negative and -positive bacterial products, are not essential for NF-κB activation and IL-6 production after PH, which excludes a possible contribution of TLR2/TLR4 or TLR9 to MyD88-mediated pathways.
In conclusion, the TLR/MyD88 pathway is essential for incidental liver restoration, particularly its early phase.

Report

(3 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • Research Products

    (18 results)

All 2006 2005 2004

All Journal Article (17 results) Book (1 results)

  • [Journal Article] Role of innate immune response in liver regeneration2006

    • Author(s)
      Iimuro Y
    • Journal Title

      Journal of Gastroenterology and Hepatology (In press)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Role of innate immune response in liver regeneration.2006

    • Author(s)
      Iimuro Y, et al.
    • Journal Title

      Journal of Gastroenterology and Hepatology (in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Role of innate immune response in liver regeneration2006

    • Author(s)
      Iimuro Y, 他5名
    • Journal Title

      Journal of Gastroenterology and Hepatology (In press)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Contribution of Toll-like recrptor/myeloid differentiation factor 88 signaling to murine liver regeneration.2005

    • Author(s)
      Seki E
    • Journal Title

      Hepatology 41・3

      Pages: 443-450

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Nuclear factor (kappa)B inactivation in the rat liver ameliorates short term total warm ischaemia/reperfusion in jury.2005

    • Author(s)
      Suetsugu H
    • Journal Title

      Gut 54・6

      Pages: 835-842

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] a novel 3D hepatectomy simulation based on liver circulation : application to liver resection and transplantation.2005

    • Author(s)
      Saito S
    • Journal Title

      Hepatology 41・6

      Pages: 1297-1304

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] ameliorating effect of hepatocyte growth factor on inflammatory bowel disease in a murine model.2005

    • Author(s)
      Oh K
    • Journal Title

      Am J Physiol Gastrointest Liver Physiol. 288・4

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Contribution of Toll-like receptor/myeloid differentiation factor 88 signaling to murine liver regeneration.2005

    • Author(s)
      Seki E, et al.
    • Journal Title

      Hepatology 41・3

      Pages: 443-450

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Nuclear factor {kappa}B inactivation in the rat liver ameliorates short term total warm ischaemia/reperfusion injury.2005

    • Author(s)
      Suetsugu H, et al.
    • Journal Title

      Gut 54・6

      Pages: 835-842

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] A novel 3D hepatectomy simulation based on liver circulation : application to liver resection and transplantation.2005

    • Author(s)
      Saito S, et al.
    • Journal Title

      Hepatology 41・6

      Pages: 1297-1304

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Ameliorating effect of hepatocyte growth factor on inflammatory bowel disease in a murine model.2005

    • Author(s)
      Oh K, et al.
    • Journal Title

      Am J Physiol Gastrointest Liver Physiol. 288・4

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] A novel 3D hepatectomy simulation based on liver circulation : application to liver resection and transplantation.2005

    • Author(s)
      Saito S, 他9名
    • Journal Title

      Hepatology 41・6

      Pages: 1297-1304

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Nuclear factor {kappa} B inactivation in the rat liver ameliorates short term total warm ischaemia/reperfusion injury.2005

    • Author(s)
      Suetsugu H, Jimuro Y, 他8名
    • Journal Title

      Gut 54・6

      Pages: 835-842

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Long-term safety of autotransfusion during hepatectomy for hepatocellular carcinoma.2005

    • Author(s)
      Hirano H, 他3名
    • Journal Title

      Surg Today 35・12

      Pages: 1042-1046

    • NAID

      10016915626

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Contribution of Toll-like receptor/myeloid differentiation factor 88 signaling to murine liver regeneration.2005

    • Author(s)
      Seki E, Tsutsui H, Iimuro Y 他
    • Journal Title

      Hepatology 41・3

      Pages: 443-450

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Nuclear factor κB inactivation in the rat liver ameliorates short-term warm ischaemia/reperfusion injury.2005

    • Author(s)
      Suetsugu H, Iimuro Y 他
    • Journal Title

      Gut (in press)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Ameliorating effect of hepatocyte growth factor on inflammatory bowel disease in a murine model.2005

    • Author(s)
      Oh K, Iimuro Y 他
    • Journal Title

      Am J Physiol Gastrointest Liver Physiol. 288・4

    • Related Report
      2004 Annual Research Report
  • [Book] Reversal of liver fibrosis. In : State of Art of Hepatology : Molecular and Cell biology.2004

    • Author(s)
      Iimuro Y
    • Total Pages
      395
    • Publisher
      Kluwer Academic Publishers
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary

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Published: 2004-04-01   Modified: 2016-04-21  

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