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2004 Fiscal Year Annual Research Report

“タンパク質"修飾酸化LDLの診断法の確立と動脈硬化における意義に関する研究

Research Project

Project/Area Number 16659141
Research InstitutionOkayama University

Principal Investigator

松浦 栄次  岡山大学, 大学院・医歯学総合研究科, 助教授 (20181688)

Co-Investigator(Kenkyū-buntansha) 四方 賢一  岡山大学, 医学部・歯学部附属病院, 講師 (00243452)
稲垣 純子  岡山大学, 大学院・医歯学総合研究科, 助手 (90271056)
Keywords酸化LDL / β_2-グリコプロテインI(β_2GPI) / C-反応性タンパク質(CRP) / 動脈硬化 / 感染免疫 / 抗リン脂質抗体症候群(APS) / 脂質代謝異常 / 複合体
Research Abstract

酸化ストレスが原因となる生活習慣病が我が国でも増加の一途を辿っている。この状況の中、動脈硬化や冠動脈疾患の早期診断、治療中の経過観察に有益な診断法として、酸化LDLや高感度C-反応性タンパク質(CRP)の測定法が開発されてきた。しかしながら、CRPおよびβ_2-グリコプロテインI(β_2GPI)が酸化LDLと複合体を形成していることが明らかになったため、早期に、これらタンパク質修飾LDLの臨床意義明らかにし、それらの診断法を確立する必要があると考えられた。そこで、平成16年度からの2年間の本萌芽研究で、基礎・臨床分野に跨る解析を体系的に行い、タンパク質修飾酸化LDLの動脈硬化への関わりについて検証すると共に、臨床診断薬としてのELISAによる修飾酸化LDLの測定法を確立することを計画した。
今年度は、Cu^<2+>-酸化LDLに、Ca^<2+>依存的にphosphorylcholineを介してCRPを、また、Ca^<2+>非依存的に特異的リガンドを介してβ_2GPIを結合させ、CRP修飾酸化LDL、β_2GPI修飾酸化LDL、CRP/β_2GPI修飾酸化LDLを各々調製し、抗β_2GPI抗体、抗CRP抗体などを用いたCRP/β_2GPI修飾酸化LDLのELISA法を確立した。これらを用いて、糖尿病、虚血性心疾患、脳血管障害、閉塞性動脈硬化症、慢性腎疾患等の動脈硬化性疾患、および膠原病(特に、SLE、APS)を対象に、動脈硬化の指標とCRP/β_2GPI修飾酸化LDLとの関連性について検討を開始した。
さらに、タンパク質修飾酸化LDLそのもの、それらに由来する脂質、β_2GPI、および、CRPが細胞内でどの様に輸送されるのかを、Alexa、GFP、NBD標識体とオルガネラマーカー(特異抗体)を作製し、共焦点レーザー顕微鏡で調べる検討を開始した。

  • Research Products

    (19 results)

All 2005 2004

All Journal Article (13 results) Book (6 results)

  • [Journal Article] Characterization of a murine anti-laminin-1 monoclonal antibody (AK8) produced by immunization with mouse-derived laminin-12005

    • Author(s)
      Kondo, A
    • Journal Title

      Clinical and Developmental Immunology 12・1

      Pages: 67-73

  • [Journal Article] Significance of valine/leucine^<247> polymorphism of β_2-glycoprotein I in antiphospholipid syndrome : increased reactivity of anti-β_2-glycoprotein I autoantibodies to the valine^<247> β_2-glycoprotein I variant2005

    • Author(s)
      Yasuda, S
    • Journal Title

      Arthritis and Rheumatism 52・1

      Pages: 212-218

  • [Journal Article] Binding of β_2-glycoprotein I to anionic phospholipids facilitates processing and presentation of a cryptic epitope that activates pathogenic autoreactive T cells2005

    • Author(s)
      Kuwana, M
    • Journal Title

      Blood (in press)

  • [Journal Article] Pregnancy loss and endometriosis : pathogenic role of anti-laminin-1 autoantibodies2005

    • Author(s)
      Inagaki, J
    • Journal Title

      Annals of New York Academy of Science (in press)

  • [Journal Article] The role of innate and adaptive immunity to oxidized low-density lipoprotein in the development of atherosclerosis2005

    • Author(s)
      Kobayashi, K
    • Journal Title

      Annals of New York Academy of Science (in press)

  • [Journal Article] Oxidized low-density lipoprotein/β_2-glycoprotein I complexes and autoantibodies in patients with type 2 diabetes mellitus2005

    • Author(s)
      Lopez, LR
    • Journal Title

      Annals of New York Academy of Science (in press)

  • [Journal Article] Anti-laminin-1 autoantibodies and reproductive failure2005

    • Author(s)
      Kondo, A
    • Journal Title

      American Journal of Reproductive Immunology (in press)

  • [Journal Article] Oxidized low-density lipoprotein/β_2-glycoprotein I complexes and autoantibodies to oxLig-1/β_2-glycoprotein I in patients with systemic lupus erythematosus and antiphospholipid syndrome2004

    • Author(s)
      Lopez, D
    • Journal Title

      American Journal of Clinical Pathology 121・3

      Pages: 426-436

  • [Journal Article] Nicked β_2-glycoprotein I : A marker of cerebral infarct and a novel role in the negative feedback pathway of extrinsic fibrinolysis2004

    • Author(s)
      Yasuda, S
    • Journal Title

      Blood 103・10

      Pages: 3766-3772

  • [Journal Article] Clinical significance of serum oxidized low-density lipoprotein/β_2-glycoprotein I complexes-in patients with chronic renal diseases2004

    • Author(s)
      Kasahara, J
    • Journal Title

      Nephron Clinical Practice 98・1

      Pages: c15-c24

  • [Journal Article] Are anti-oxidized low-density lipoprotein antibodies pathogenic or protective?2004

    • Author(s)
      Shoenfeld, Y
    • Journal Title

      Circulation 110・17

      Pages: 2552-2558

  • [Journal Article] Are oxidized LDL/β_2-glycoprotein I complexes pathogenic antigens in autoimmune-mediated atherosclerosis?2004

    • Author(s)
      Matsuura, E
    • Journal Title

      Clinical and Developmental Immunology 11・2

      Pages: 103-111

  • [Journal Article] Anti-laminin-1 autoantibodies, pregnancy loss and endometriosis2004

    • Author(s)
      Inagaki, J
    • Journal Title

      Clinical and Developmental Immunology 11・3-4

      Pages: 261-266

  • [Book] Hughes syndrome : antiphospholipid syndrome (2nd edition), Atherogenesis and antiphospholipid antibodies2005

    • Author(s)
      Matsuura, E
    • Publisher
      Springer (London, UK)(in press)
  • [Book] Systemic lupus erythematosus (fourth edition), Immunology of antiphospholipid antibodies and cofactors2004

    • Author(s)
      Atsumi, T
    • Total Pages
      1081-1105
    • Publisher
      Elsevier Science BV (Amsterdam, The Netherlands)
  • [Book] Focus on atherosclerosis research, Oxidized low-density lipoprotein complexed with β_2-glycoprotein I as a common metabolic form in atherogenesis and autoimmune-mediated atherosclerosis. Roles of antibodies on atherosclerosis2004

    • Author(s)
      Matsuura, E
    • Total Pages
      91-113
    • Publisher
      Nova Science Publishers (New York, USA)
  • [Book] Recent research of developments in lipids (Vol 7), Autoimmune-mediated atherosclerosis : pathogenic role of oxLDL/β_2GPI complexes2004

    • Author(s)
      Lopez, LR
    • Total Pages
      23-47
    • Publisher
      Transworld Research Network (Kerala, India)
  • [Book] Autoantigens, autoantibodies, antoimmunity (Vol 4), Anti-laminin-1 autoantibodies in reproductive failure : animal and human studies2004

    • Author(s)
      Inagaki, J
    • Total Pages
      243-252
    • Publisher
      Pabst Science Publisher (Lengerich, Germany)
  • [Book] Autoantigens, autoantibodies, antoimmunity (Vol 4), Atheorogenic role of protein-modified oxidized low-density lipoproteins and their autantibodies2004

    • Author(s)
      Matsuura, E
    • Total Pages
      388-405
    • Publisher
      Pabst Science Publisher (Lengerich, Germany)

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Published: 2006-07-12   Modified: 2016-04-21  

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