Oxidized LDL activates fas-mediated endothelial cell apoptosis

J Clin Invest. 1998 Nov 1;102(9):1682-9. doi: 10.1172/JCI3531.


Oxidized low density lipoproteins (OxLDL) promote chronic inflammatory responses in the vasculature that give rise to atherosclerotic plaques. Fas ligand (FasL) is naturally expressed on the vascular endothelium where it can induce apoptosis in Fas-expressing immune cells as they enter the vessel wall. Although vascular endothelial cells are normally resistant to Fas-mediated cell death, OxLDL were shown to induce apoptosis in cultured endothelial cells and endothelium of arterial explants by a process that could be inhibited with Fas L neutralizing antibodies. OxLDL-induced cell death was also reduced in the aortic endothelium cultured from gld (FasL-/-) and lpr (Fas-/-) mice as compared with wild-type mice. OxLDL acted by sensitizing endothelial cells to death signals from the Fas receptor. Thus, the ability of OxLDL to promote Fas-mediated endothelial cell suicide may be a feature that contributes to their atherogenicity.

Publication types

  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Apoptosis*
  • Cells, Cultured
  • Endothelium, Vascular
  • Fas Ligand Protein
  • Humans
  • Lipoproteins, LDL / metabolism*
  • Lipoproteins, LDL / pharmacology
  • Membrane Glycoproteins / biosynthesis
  • Mice
  • Mice, Inbred C57BL
  • Mice, Inbred MRL lpr
  • Mitochondria / drug effects
  • Mitochondria / physiology
  • fas Receptor / metabolism*


  • FASLG protein, human
  • Fas Ligand Protein
  • Fasl protein, mouse
  • Lipoproteins, LDL
  • Membrane Glycoproteins
  • fas Receptor
  • oxidized low density lipoprotein