Regulation of cell growth by oxidized LDL

被引:79
作者
Chisolm, GM [1 ]
Chai, YC [1 ]
机构
[1] Cleveland Clin Fdn, Lerner Res Inst, Dept Cell Biol, Cleveland, OH 44195 USA
关键词
antioxidant; atherosclerosis; endothelial cell; free radicals; growth factor; macrophage; oxidized LDL; smooth muscle cells;
D O I
10.1016/S0891-5849(00)00227-6
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The first reports of the influences of oxidized LDL (oxLDL) on cell function pertained to negative effects on cell growth-growth arrest, injury, and toxicity. Since these studies, it has become apparent that sublethal levels of oxLDL cause some, but not all, cells to proliferate. This review highlights the growth-promoting effects of oxLDL rather than its inhibitory or injurious effects. Smooth muscle cells (SMCs) and monocyte-macrophages proliferate after exposure to oxLDL; endothelial cells do not. Scavenger receptors are involved in the proliferative effects on monocyte-macrophages, whereas the effects of oxLDL on SMCs appear to be receptor independent. Lysophosphati dylcholine (lysoPC), and structurally related lipids are among the growth-promoting constituents of oxLDL. OxLDL exerts at least a part of its effects by inducing expression or causing the release of growth factors. OxLDL (or lysoPC) can cause the release of basic fibroblast growth factor (bFGF) from SMCs; oxLDL (or lysoPC) can induce heparin binding EGF-like growth factor (HB-EGF) synthesis and release from macrophages. An imposing array of changes in cytokine and growth factor expression and/or release can be imposed by oxLDL on a wide variety of cell types. These effects and the studies probing the cell signaling events leading to them are described. (C) 2000 Elsevier Science Inc.
引用
收藏
页码:1697 / 1707
页数:11
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