The expression of the lectin-like oxidized low-density lipoprotein receptor (LOX-1) on human vascular smooth muscle cells and monocytes and its down-regulation by lovastatin
- PMID: 9933026
- DOI: 10.1016/s0006-2952(98)00313-x
The expression of the lectin-like oxidized low-density lipoprotein receptor (LOX-1) on human vascular smooth muscle cells and monocytes and its down-regulation by lovastatin
Abstract
Accumulation of oxidatively modified low-density lipoprotein (oxLDL) in the vascular wall is a characteristic feature of atherosclerosis. oxLDL can be taken up into monocytes, smooth muscle cells, and endothelial cells by several known scavenger receptors such as scavenger receptor class A I and II, CD36, and CD68. A new lectin-like oxLDL receptor (LOX-1) was recently found in bovine and human endothelial cells. We studied whether LOX-1 is also expressed in other cells present in the atherosclerotic lesion and whether its expression can be modified. We found LOX-1 expression in human blood monocytes, umbilical smooth muscle and endothelial cells, and 3T3 fibroblasts. LOX-1 mRNA expression in monocytes could be significantly suppressed by lovastatin. Thus, LOX-1 expression is not restricted to endothelial cells and its down-regulation by HMG-CoA reductase inhibitors could contribute to the clinical benefits of these drugs.
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