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2007 Fiscal Year Annual Research Report

Vanishing bile ductモデルマウスの開発

Research Project

Project/Area Number 19590773
Research InstitutionKochi University

Principal Investigator

大西 三朗  Kochi University, 医学部, 教授 (60136380)

Co-Investigator(Kenkyū-buntansha) 西原 利治  高知大学, 医学部, 准教授 (60145125)
高橋 昌也  高知大学, 医学部, 助教 (80380335)
Keywordsbile duct / death receptor / apoptosis / autoimmune / mouse
Research Abstract

CD4^+CD8^+CD25^+胸腺細胞の段階におけるTCR β^<high>胸腺細胞への分化阻害が脾臓および骨髄でB細胞の増殖や胆管炎発症に関与する可能性を検討し、健常マウスの末梢CD4^+CD^25+T細胞の移入により胆管病変の進行が抑制されることを明らかにした。胆管に対する免疫応答により小葉間胆管が選択的に破壊される原発性胆汁性肝硬変では、正常な免疫応答を担う末梢CD4^+CD25^+T細胞を移入することにより病変の抑制が可能であった。そこで、末梢血CD4^+CD25^+T細胞を効率分取する方法を確立した。
他方、vanishing bile duct症候群は移植肝の急性および慢性拒絶反応の表現型であり、充分な免疫抑制により対処が可能である。しかし、治療が成功しなければ、しばしば予後不良となる難治性疾患である。そこで、vanishing bile duct症候群のモデルとしてTRAILレセプターのdeath domainを標的とすることとし、まずRT-PCRを用いて各種マウスstrainのTRAILレセプターのdeath domainにつき遺伝子配列を決定した。その結果、TRAILレセプターのdeath domainにアミノ酸置換を伴う遺伝子多型が存在することを見いだした。さらに、このepitopeに対する免疫応答を通じて難治性の慢性胆管炎vanishing bile duct症候群を惹起することができた。

  • Research Products

    (9 results)

All 2007

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (6 results)

  • [Journal Article] The phosphatidylethanolamine N-methyl- transferase gene V175M single nucleotide polymorphism confers the susceptibility to NASH in Japanese population2007

    • Author(s)
      Dong H, Wang J, Li C, et. al.
    • Journal Title

      J Hepatol 45

      Pages: 915-920

    • Peer Reviewed
  • [Journal Article] Angiotensin II type 1 receptor blocker inhibits fibrosis in rat nonalcoholic steatohepatitis2007

    • Author(s)
      Hirose A, Ono M, Saibara T, et. al.
    • Journal Title

      Hepatology 45

      Pages: 1375-1381

    • Peer Reviewed
  • [Journal Article] Fibrate for treatment of primary biliary cirrhosis2007

    • Author(s)
      Iwasaki S, Akisawa N, Saibara T, et. al.
    • Journal Title

      Hepatol Res 37

      Pages: S515-S517

    • Peer Reviewed
  • [Presentation] Possibie involvement of impaired choline-methionine metabolism in the pathogenesis of nonalcoholic fatty liver disease2007

    • Author(s)
      T.Saibara, M.Ono, S.Onishi
    • Organizer
      Asia Pasific digestive week 2007
    • Place of Presentation
      Kobe
    • Year and Date
      20071015-18
  • [Presentation] The Cog2 gene A2217G single nucleotide polymorphism confers susceptibility to hepatocyte ballooning in NASH patients2007

    • Author(s)
      T.Saibara, A.Yoshioka, A.Hirose, et. al.
    • Organizer
      Asia Pasific digestive week 2007
    • Place of Presentation
      Kobe
    • Year and Date
      20071015-18
  • [Presentation] The phosphatidylethanolamine N-methyltransferase gene V175M single nucleotide polymorphism confers the susceptibility to NASH in Japanese population2007

    • Author(s)
      T.Saibara, A.Yoshioka, A.Hirose, et. al.
    • Organizer
      Asia Pasific digestive week 2007
    • Place of Presentation
      Kobe
    • Year and Date
      20071015-18
  • [Presentation] Metabolic syndrome as the pathogenic background for the development of NASH2007

    • Author(s)
      T.Saibara, M.Ono, A.Hirose, et. al.
    • Organizer
      17th Asia-Pasific Association for the Study of Liver Disease
    • Place of Presentation
      Kyoto
    • Year and Date
      20070328-30
  • [Presentation] Angiotensin II type 1 receptor blocker inhibits fibrosis in rats steatohepatitis2007

    • Author(s)
      M.Ono, A.Hirose, T.Saibara, et. al.
    • Organizer
      17th Asia-Pasific Association for the Study of Liver Disease
    • Place of Presentation
      Kyoto
    • Year and Date
      20070328-30
  • [Presentation] Nonalcoholic fatty liver disease is a hepatic manifestation of metabolic syndrome2007

    • Author(s)
      T.Saibara
    • Organizer
      International symposium "Oxidative Stress Summit"
    • Place of Presentation
      Osaka
    • Year and Date
      2007-07-14

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Published: 2010-02-04   Modified: 2016-04-21  

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