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新規抗癌剤開発のためのリピッドラフト解析

Research Project

Project/Area Number 18659287
Research Category

Grant-in-Aid for Exploratory Research

Allocation TypeSingle-year Grants
Research Field Hematology
Research InstitutionKanazawa Medical University

Principal Investigator

梅原 久範  Kanazawa Medical University, 医学部, 教授 (70247881)

Co-Investigator(Kenkyū-buntansha) 正木 康史  金沢医科大学, 医学部, 准教授 (40238895)
福島 俊洋  金沢医科大学, 医学部, 准教授 (60251998)
田中 真生  金沢医科大学, 医学部, 講師 (10332719)
Project Period (FY) 2006 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 2007: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 2006: ¥1,600,000 (Direct Cost: ¥1,600,000)
Keywordsリピッドラフト / アポトーシス / スフィンゴミエリン
Research Abstract

1)スフィンゴミエリン欠失細胞株細胞株におけるFas誘導apoptosisの解析:
スフィンゴミエリン欠質細胞およびコントロール細胞を抗Fas抗体(CH11)で刺激し,apoptosisをsub G1法でFACSで解析し,両細胞におけるapoptosisの差異を明らかにした.Fas架橋刺激による,DISC形成の検出,Caspase活性の測定,ミトコンドリア膜電位の測定を行なった.
2)細胞膜lipid raftのconfocal microscopyによる解析:
スフィンゴミエリン欠失細胞株におけるlipid raftの形態および機能を明らかにした.細胞膜でのスフィンゴミエリンの局在を明らかにするために,スフィンゴミエリンに特異的に結合するMBP結合1yseninとPE標識抗MBP抗体を用いて染色した.Fas架橋刺激によるCluster形成をFITC-,PE-標識Fas抗体で検出し,ラフト構成におけるganglioside GM1とスフィンゴミエリンおよびFasの動態を明らかにした.スフィンゴミエリン欠失細胞株では,Fasの凝集が抑制されていた.
3)Fas誘導シグナルの差異の検討:
Fas架橋刺激に伴う,FADD,Caspase-8とFasとの結合をwestern blottingおよび免疫沈降法を用いて検討した.リピッドラフトをsucrose gradient法により分画し,ganglioside GM1量とスフィンゴミエリン量を比較検討した.Fas刺激に伴うFADDやCaspaseなどのシグナル伝達物質のlipidraftへの移行を検討した.スフィンゴミエリン欠失細胞では,Fas刺激によるcaspase-8,caspase-3活性が抑制されていた.また,Fasに会合するFADD,Caspase-8量も低下していた.その結果Fasによるアポトーシスがスフィンゴミエリン欠失細胞では障害されていることが明らかになった.

Report

(2 results)
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (10 results)

All 2007 2006

All Journal Article (10 results) (of which Peer Reviewed: 4 results)

  • [Journal Article] Clonality analysis of lymphoproliferative disorders in lymphocytes infiltration from patients with Sjogren's syndrome(SS).2007

    • Author(s)
      Dong, L.,
    • Journal Title

      Clin. Exp. Immunol. 150

      Pages: 279-284

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cloning and expression of two human recombinant monoclonal Fab fragments specific for EBV viral capsid antigen.2007

    • Author(s)
      Dong, L.,
    • Journal Title

      Int. Immunol. 19

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Sjogren's syndrome and lymphoma development.(Review)2007

    • Author(s)
      Dong, L.,
    • Journal Title

      Clin. Immunol. Rev. 3

      Pages: 289-296

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Efficacy and Safety of Mizoribine for the Treatment of Sjogren's Syndrome. A Multicenter Open-label Clinical Trial.2007

    • Author(s)
      Nakayamada, S.
    • Journal Title

      Mod. Rheum. 17

      Pages: 464-469

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fractalkine in rheumatoid arthritis and allied conditions2006

    • Author(s)
      Umehara H, Tanaka M, Sawaki T, Jin ZX, Huang CR, Dong L, et al.
    • Journal Title

      Mod.Rheumatol 16

      Pages: 124-130

    • NAID

      10017608542

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Detection of serum hepcidin in renal failure and inflammation by using ProteinChip System.2006

    • Author(s)
      Tomosugi N, Kawabata H, Wakatabe R, Higuchi M, Yamaya H, Umehara H, Ishikawa I
    • Journal Title

      Blood 108

      Pages: 1381-1387

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Matrix metalloproteinase-1 produced by human CXCL12-stimulated natural killer cells.2006

    • Author(s)
      Goda S, Inoue H, Umehara H, et al.
    • Journal Title

      Am.J.Pathol 169

      Pages: 445-458

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Anti-aminoacyl-tRNA synthetase antibodies in clinical course prediction of interstitial lung disease complicated with idiopathic inflammatory myopathies.2006

    • Author(s)
      Yoshifuji H, Fujii T, Umehara H, et al.
    • Journal Title

      Autoimmunity 39

      Pages: 233-241

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Successful salvage therapy of continuous low-dose irinotecan for a patient with relapsed and refractory diffuse large B-cell lymphoma2006

    • Author(s)
      Masaki Y, Sawaki T, Shimoyama, Umehara H. et al.
    • Journal Title

      J.Rinsho Retsueki 46

      Pages: 1074-1077

    • NAID

      130004501017

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Urinary pseudouridine in patients with lymphoma : comparison with other clinical parameters.2006

    • Author(s)
      Masaki Y, Itoh K, Sawaki T, et al., Umehara H.
    • Journal Title

      Clin.Chim.Acta. 371

      Pages: 148-151

    • Related Report
      2006 Annual Research Report

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Published: 2006-04-01   Modified: 2016-04-21  

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