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Elucidation of physiological roles of sphingosine 1-phosphate and its receptors in adipose tissue

Research Project

Project/Area Number 19790650
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Endocrinology
Research InstitutionKagawa University

Principal Investigator

HASHIMOTO Takeshi  Kagawa University, 医学部, 助教 (80380153)

Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥3,670,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥270,000)
Fiscal Year 2008: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2007: ¥2,500,000 (Direct Cost: ¥2,500,000)
Keywordsスフィンゴシン1リン酸 / Sphingosine 1-phosphate (S1P) / スフィンゴシンキナーゼ / Sphingosine Kinase (SphK) / 脂肪細胞 / 脂肪組織 / 3T3-L1細胞 / ob / ob マウス / Sphingosine 1-phosphate(S1P) / Sphingosine Kinase(SphK) / Sphingosine I-phosphate (SIP) / Sphingosine Kinase (Sphk)
Research Abstract

前駆脂肪細胞が脂肪細胞へ分化する過程で、S1P産生酵素(SphK)のmRNAおよび蛋白質が著名に増加し、発現上昇したSphKが細胞内S1Pの生成を増加させる。SphK-1遺伝子をノックダウンした細胞は脂肪細胞への分化が抑制し、aP2・PPARγ・C/EBPαなどの転写因子のmRNAの発現は減少する。ob/obマウスの皮下脂肪組織においてSphK-1 mRNAの著名な発現上昇が認められ、マウス胎児から単離した初代培養細胞においても脂肪細胞への分化過程でSphK-1 mRNAは上昇することから、脂肪細胞の分化に対してSphK-1が重要な役割を果たしている可能性が示唆された。

Report

(3 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • Research Products

    (5 results)

All 2009 2008 2007

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (3 results)

  • [Journal Article] Sphingosine kinase is induced in mouse 3T3-L1 cells and promotes adipogenesis2009

    • Author(s)
      Hashimoto T, Igarashi J, Kosaka H.
    • Journal Title

      Journal of lipid research 50(4)

      Pages: 602-610

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Sphingosine kinase is induced in mouse 3T3-L1 cells and promotes adipogenesis2009

    • Author(s)
      Hashimoto T, Igarashi J, Kosaka H
    • Journal Title

      Journal of lipid research 50(4)

      Pages: 602-610

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Presentation] Sphingosine Kinase-1, an S1P-producing enzyme, promotes adipogenesis2008

    • Author(s)
      橋本剛;五十嵐淳介;小坂博昭
    • Organizer
      第81回日本薬理学会
    • Place of Presentation
      横浜
    • Year and Date
      2008-03-17
    • Related Report
      2008 Final Research Report
  • [Presentation] Sphingosine Kinase 1,an SIP producing enzyme,promotes adipogenesis2008

    • Author(s)
      橋本剛、五十嵐淳介、小坂博昭
    • Organizer
      日本薬理学会
    • Place of Presentation
      パシフィコ横浜
    • Year and Date
      2008-03-17
    • Related Report
      2007 Annual Research Report
  • [Presentation] 3T3-L1前駆脂肪細胞におけるSphingosine Kinase-1の脂肪細胞分化への関与2007

    • Author(s)
      橋本剛;五十嵐淳介;小坂博昭
    • Organizer
      第84回日本生理学会
    • Place of Presentation
      大阪
    • Year and Date
      2007-03-20
    • Related Report
      2008 Final Research Report

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Published: 2007-04-01   Modified: 2016-04-21  

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