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2007 Fiscal Year Annual Research Report

脂肪酸β酸化能を規定する遺伝子多型の特定とその結晶蛋白構造解析

Research Project

Project/Area Number 19590772
Research InstitutionKochi University

Principal Investigator

西原 利治  Kochi University, 医学部, 准教授 (60145125)

Co-Investigator(Kenkyū-buntansha) 戸田 勝巳  高知大学, 医学部, 准教授 (40197893)
高橋 昌也  高知大学, 医学部, 助教 (80380335)
KeywordsFatty acid / Beta-oxidation / PPAR / Crystalography
Research Abstract

NASHは内臓脂肪型肥満者に多く、インスリン抵抗性が強く、高血圧、2型糖尿病、高脂血症などメタボリックシンドロームに特徴的な異常を合併しやすいなどの臨床像を示す慢性進行性肝疾患である。そこで我々は上記の情報を基に、糖尿病および脂質異常に関連することが知られている遺伝子多型のデータベースを作成した。このデータベースを基に、NASHの発症リスクを高める機能性遺伝子多型を検索し、近傍に脂質・糖質代謝関連遺伝子が存在する遺伝子多型のデータベースを作成した。これらの遺伝子多型のいくつかはすでに機能が明らかにされており、NASHの発症・進展と密に関連することも確認できた。しかし、機能が未知の蛋白上にもこのような遺伝子多型が検出された。今回、肝細胞に多量に発現されている蛋白の中で、糖質・脂質代謝と関連する機能が充分に明らかになっていない遺伝子多型に着目し解析を順次開始した。本年度はこの機能が未知の蛋白の野生型と変異型遺伝子情報を基にこれらの遺伝子組換え蛋白を作成した。また、これに対するポリクローナル抗体も作成した。抗体を用いてこの蛋白の精製を試みたが、発現細胞にこの抗体とわずかに交差反応を示す分子量の異なる蛋白質が複数検出され、結晶解析を行う純度を得ることができなかった。明年度は今回得た抗体と交差反応性を示さない発現細胞で上記遺伝子組み換え蛋白を発現させ、機能解析と共に結晶解析を再度試みる予定である。

  • Research Products

    (15 results)

All 2007

All Journal Article (9 results) (of which Peer Reviewed: 9 results) Presentation (6 results)

  • [Journal Article] The phosphatidylethanol amine 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 46

      Pages: 915-920

    • Peer Reviewed
  • [Journal Article] Obstructive sleep apnea syndrome is associated with some components of metabolic syndrome2007

    • Author(s)
      Kono M, Tatsumi K, Saibara T, et. al.
    • Journal Title

      Chest 131

      Pages: 12387-1392

    • Peer Reviewed
  • [Journal Article] What are the risk factors and settings for non-alcoholic fatty liver disease in Asia-Pacific?2007

    • Author(s)
      Fan JG, Saibara T, Chitturi S, et. al.
    • Journal Title

      J Gastroenterol Hepatol 22

      Pages: 794-800

    • Peer Reviewed
  • [Journal Article] Spur cells and acanthocytes in liver diseases2007

    • Author(s)
      T.Saibara
    • Journal Title

      Hepatol Res 37

      Pages: 402-404

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

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

      Hepatology 45

      Pages: 1375-1381

    • Peer Reviewed
  • [Journal Article] Non-alcoholic fatty liver disease in the Asia-Pacific region:definitions and overview of proposed guidelines2007

    • Author(s)
      Chitturi S, Farrell GC, Hashimoto E, et. al.
    • Journal Title

      J Gastroenterol Hepatol 22

      Pages: 778-787

    • Peer Reviewed
  • [Journal Article] Decreased lipoprotein lipase in obstructive sleep apnea syndrome2007

    • Author(s)
      lesato K, Tatsumi K, Saibara T, et. al.
    • Journal Title

      Circ J 71

      Pages: 1293-1298

    • 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
  • [Journal Article] Phosphatidylcholine could have a key role in the pathogenesis of steatohepatitis-Reply2007

    • Author(s)
      Saibara T, Ono M.
    • Journal Title

      J Hepatol 47

      Pages: 869-870

    • Peer Reviewed
  • [Presentation] Possible involvement of impaired choline-methionine metabolism in the pathogenesis of nonalcoholic fatty liver disease.2007

    • 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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