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AGEとAGE受容体の生体内局在と医学的意義の検討

Research Project

Project/Area Number 12770638
Research Category

Grant-in-Aid for Encouragement of Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Metabolomics
Research InstitutionKumamoto University

Principal Investigator

永井 竜児  熊本大学, 医学部, 助手 (20315295)

Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 2001: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2000: ¥1,500,000 (Direct Cost: ¥1,500,000)
Keywordsメイラード反応 / AGE / グリケーション / 動脈硬化症 / 糖尿病合併症 / 動脈硬化
Research Abstract

AGE受容体の解析:既に我々は、macrophage scavenger receptor class A(SR-A)が主要なAGE受容体として機能していることを明らかにしている。本年度はHDL(high density lipoprotein)受容体であるSR-BIもAGE受容体として機能し、AGE化蛋白はSR-BIを介した(i)HDLからコレステロールの肝細胞への選択的取り込み、(ii)抹消細胞からHDLへのコレステロール搬出系の両者を阻害することを明らかにした。さらに、酸化LDL(low density lipoprotein)受容体として知られるマクロファージ系細胞に発現するCD36及び、血管内皮細胞に発現するLectin-like oxidized LDL receptor-1(LOX-1)もAGE化蛋白を認識することから、生体で生成したAGE化LDLはSR-Aのみならず、CD36やLOX-1を介して細胞内に取り込まれ、細胞の泡沫化を起こすことが示唆された。また、マクロファージの分化マーカーとして知られるgalectin-3もAGE受容体として機能することを明らかにした。
主要AGE構造体の同定とその局在の検討:家族性筋萎縮性側索硬化症(FALS)患者の神経細胞内にある硝子性封入体にCML及びimidazoloneが蓄積していることを明確にした。現在までメチルグリオキサールは主として細胞内の解糖系より生成すると考えられてきたが、今回、メイラード反応の中間体であるシッフ塩基からも生成することが、蛍光ラベル法を用いたHPLCによる解析から明らかとなり、さらに生成したメチルグリオキサールによってCEL及びimidazoloneが生成することが明らかとなった。特にCELは、I型糖尿病の発症によって血中濃度が上昇することが知られるアセトールからも生成することが明らかとなり、生体では解糖系のみならず、メイラード反応およびアセトールからCELが生成する可能性が示唆された。

Report

(2 results)
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • Research Products

    (25 results)

All Other

All Publications (25 results)

  • [Publications] Ohgami N et al.: "CD36,a member of class B scavenger receptor family, as a receptor for advanced glycation end products (AGE)"J. Biol. Chem.. 276. 3195-3202 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Meng, J et al.: "Carboxymethyllysine in dermal tissues of diabetic and non-diabetic patients with chronic renal failure : relevance to glycoxidation damage"Nephron. 88. 30-35 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Sakata N et al.: "Advanced glycation end products in human optic nerve head"Br J Ophthalmol. 85. 52-55 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Zhu W et al.: "The Role of Galectin-3 in Endocytosis of Advanced Glycation End Products and Modified Low Density Lipoproteins"Biochem. Biophys. Res. Commun.. 280. 1183-1188 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Ohgami N et al.: "Scavenger receptor class B type I-mediated reverse cholesterol transport is inhibited by advanced glycation end products"J. Biol. Chem.. 276. 13348-13355 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Kato S et al.: "Formation of advanced glycation end-product-modified superoxide dismutase-1 (SOD1) is one of the mechanisms responsible for inclusions common to familial amyotrophic lateral sclerosis patients with SOD1 gene mutation, and transgenic mice expressing human SOD1 gene mutation"Neuropathology. 21. 67-81 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Ling X et al.: "Immunohistochemical distribution and quantitative biochemical detection of advanced glycation end products in fetal to adult rats and in rats with streptozotocin-induced diabetes"Lab. Invest.. 81. 845-861 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Shibata N et al.: "Morphological evidence for lipid peroxidation and protein glycoxidation in spinal cords from sporadic amyotrophic lateral sclerosis patients"Brain Res.. 26. 97-104 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Uesugi N et al.: "Glycoxidation-modified macrophages and lipid peroxidation products are associated with the progression of human diabetic nephropathy"Am J Kidney Dis.. 38. 1016-1025 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Ohgami N et al.: "CD36, a member of class B scavenger receptor family, is a receptor for advanced glycation end products"Ann N Y Acad Sci.. 947. 350-355 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Jono T et al.: "Lectin like oxidized low density lipoprotein receptor-1 (LOX-1) serves as an endothelial receptor for advanced glycation end products (AGE)"FEBS Lett.. 30. 170-174 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Zhu W et al.,: "The Role of Galectin-3 in Endocytosis of Advanced Glycation End Products and Modified Low Density Lipoproteins"Biochem Biophys Res Commun. 280. 1183-1188 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Sakata N et al.,: "Glycoxidation and lipid peroxidation of low-density lipoprotein can synergistically enhance atherogenesis"Cardiovasc.Res.. 49. 466-475 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Kato S et al.,: "Advanced glycation endproduct-modified superoxide dismutase-1 (SOD1)-positive inclusions are common to familial amyotrophic lateral Sclerosis patients with SOD1 gene mutations and transgenic mice expressing human SOD1 with G85R mutation."Neuropathol. 100. 490-505 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Sakata N et al.,: "Possible involvement of altered RGD sequence in reduced adhesive and spreading activities of advanced glycation end product-modified fibronectin to vascular smooth muscle cells."Connective Tissue Research. (In press). (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Meng J et al.,: "Tissue carboxymethyllysine in diabetic and non-diabetic patients with chronic renal failure : relevance to glycoxidation damage."Nephron.. (In press). (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Ohgami N et al.,: "CD36, a member of class B scavenger receptor family, as a receptor for advanced glycation end products (AGE)."J.Biol.Chem.. 276. 3195-3202 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Matsumoto K et al.,: "Endocytic uptake of advanced glycation end products by mouse liver sinusoidal endothelial cells is mediated by a scavenger receptor distinct from the macrophage scavenger receptor-A(MSR-A)."Biochem.J.. 352. 233-240 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Nagai R et al.,: "Glycolaldehyde, a reactive intermediate for advanced glycation endproducts, plays an important role in the generation of an active ligand for the macrophage scavenger receptor."Diabetes. 49. 1714-1723 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Shibata N et al.,: "Nonoxidative protein glycation is implicated in familial amyotrophic lateral sclerosis with superoxide dismutase-1 mutation"Acta Neuropathol. 100. 275-284 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Imanaga Y et al.,: "In vivo and in vitro evidence for the glylcoxidation of low density lipoprotein in human atherosclerotic plaques."Atherosclerosis. 150. 343-355 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Amano S et al.,: "Advanced glycation end products in human optic nerve head"Br J.Ophthalmol.. 85. 52-55 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Nyhlin N et al.,: "Advanced glycation end product in familial amyloidotic polyneuropathy(FAP)."J.Int.Med.. 247. 485-492 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Kaji Y et al.,: "Advanced glycation end products in diabetic corneas."Invest.Ophthalmol.Vis.Sci.. 41. 362-368 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Uesugi N et al.,: "Glycoxidative modification of AA amyloid deposits in renal tissue."Nephrol.Dial.Transplant.. 15. 355-365 (2000)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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