期刊
ATHEROSCLEROSIS
卷 155, 期 2, 页码 439-444出版社
ELSEVIER SCI IRELAND LTD
DOI: 10.1016/S0021-9150(00)00580-3
关键词
very low density lipoprotein receptor; monocytes; hypoxia macrophages; scavenger receptor
Although very low density lipoprotein (VLDL) receptor expression by macrophages has been shown in the vascular wall, it is not dear whether or not circulating monocytes express the VLDL receptor. We investigated the expression of VLDL receptor mRNA in human peripheral blood monocytes and monocyte-derived macrophages by reverse transcriptase polymerase chain reaction (RT-PCR) and nucleotide sequencing after subcloning of PCR product. VLDL receptor mRNA was detected both in peripheral blood monocytes and monocyte-derived macrophages. Expression of VLDL receptor mRNA was upregulated by hypoxia in monocytes, whereas treatment with oxidized LDL. interleukin-1 beta or monocyte chemoattractant protein-1 did not affect the levels of VLDL receptor mRNA in monocytes and macrophages. The present study shows a novel response of VLDL receptor mRNA to hypoxia, suggesting a role for VLDL receptor in the metabolism of lipoproteins in the vascular wall and the development of atherosclerosis. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.
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