PMID- 10079097 OWN - NLM STAT- MEDLINE DCOM- 19990402 LR - 20220309 IS - 0021-9738 (Print) IS - 0021-9738 (Linking) VI - 103 IP - 6 DP - 1999 Mar TI - MCP-1 deficiency reduces susceptibility to atherosclerosis in mice that overexpress human apolipoprotein B. PG - 773-8 AB - The earliest recognizable atherosclerotic lesions are fatty streaks composed of lipid-laden macrophages (foam cells). Circulating monocytes are the precursors of these foam cells, but the molecular mechanisms that govern macrophage trafficking through the vessel wall are poorly understood. Monocyte chemoattractant protein-1 (MCP-1), a member of the chemokine (chemotactic cytokine) family, is a potent monocyte agonist that is upregulated by oxidized lipids. Recent studies in hypercholesterolemic mice lacking apo E or the low-density lipoprotein receptor have suggested a role for MCP-1 in monocyte recruitment to early atherosclerotic lesions. To determine if MCP-1 is critically involved in atherogenesis in the setting of elevated physiological plasma cholesterol levels, we deleted the MCP-1 gene in transgenic mice expressing human apo B. Here we report that the absence of MCP-1 provides dramatic protection from macrophage recruitment and atherosclerotic lesion formation in apo B transgenic mice, without altering lipoprotein metabolism. Taken together with the results of earlier studies, these data provide compelling evidence that MCP-1 plays a critical role in the initiation of atherosclerosis. FAU - Gosling, J AU - Gosling J AD - Gladstone Institute of Cardiovascular Disease, San Francisco, California 94141, USA. FAU - Slaymaker, S AU - Slaymaker S FAU - Gu, L AU - Gu L FAU - Tseng, S AU - Tseng S FAU - Zlot, C H AU - Zlot CH FAU - Young, S G AU - Young SG FAU - Rollins, B J AU - Rollins BJ FAU - Charo, I F AU - Charo IF LA - eng GR - P01 HL041633/HL/NHLBI NIH HHS/United States GR - R01 HL052773/HL/NHLBI NIH HHS/United States GR - HL-41633/HL/NHLBI NIH HHS/United States GR - HL-52773/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Clin Invest JT - The Journal of clinical investigation JID - 7802877 RN - 0 (Apolipoproteins B) RN - 0 (Chemokine CCL2) RN - 0 (Cholesterol, HDL) RN - 0 (Lipoproteins) RN - 0 (Triglycerides) RN - 97C5T2UQ7J (Cholesterol) SB - IM MH - Animals MH - Aorta/pathology MH - Apolipoproteins B/*biosynthesis/genetics MH - Arteriosclerosis/*etiology/pathology MH - Chemokine CCL2/*deficiency/genetics MH - Cholesterol/blood MH - Cholesterol, HDL/blood MH - Foam Cells/cytology/*metabolism MH - Humans MH - Lipoproteins/*biosynthesis/genetics MH - Mice MH - Mice, Transgenic MH - Triglycerides/blood PMC - PMC408147 EDAT- 1999/03/17 00:00 MHDA- 1999/03/17 00:01 PMCR- 1999/03/15 CRDT- 1999/03/17 00:00 PHST- 1999/03/17 00:00 [pubmed] PHST- 1999/03/17 00:01 [medline] PHST- 1999/03/17 00:00 [entrez] PHST- 1999/03/15 00:00 [pmc-release] AID - 05624 [pii] AID - 10.1172/JCI5624 [doi] PST - ppublish SO - J Clin Invest. 1999 Mar;103(6):773-8. doi: 10.1172/JCI5624.