期刊
CARDIOVASCULAR RESEARCH
卷 78, 期 1, 页码 175-184出版社
ELSEVIER SCIENCE BV
DOI: 10.1093/cvr/cvn007
关键词
atherosclerosis; gene array analysis; inflammation; macrophages; statins
Aims Statins have beneficial vascular effects beyond their cholesterol-towering action. Since macrophages play a central role in atherogenesis, we characterized the effects of simvastatin on gene expression profile of human peripheral blood monocyte (HPBM)-macrophages. Methods and results Gene expression profile was studied using Affymetrix gene chip analysis. Lentiviral gene transfer of Kruppel-like factor 2 (KLF-2) was used to further study its role in macrophages. Simvastatin treatment lead to downregulation of many pro-inflammatory genes including several chemokines [e.g. monocyte chemotactic protein-1 (MCP-1), macrophage inflammatory proteins-la and beta, interteukin-2 receptor-beta], members of the tumour necrosis factor family (e.g. lymphotoxin beta), vascular cell adhesion molecule-1, and tissue factor (TF). Simvastatin also modulated the expression of several transcription factors essential for inflammation: NF-kappa B relA/p65 subunit and ets-1 were downregulated, and an atheroprotective transcription factor KLF-2 was upregulated. The effects of simvastatin on MCP-1 and TF could be mimicked by KLF-2 overexpression using lentiviral gene transfer. Conclusion Simvastatin has a strong anti-inflammatory effect on HPBM cells including upregulation of the atheroprotective factor KLF-2. This may partly explain the beneficial effects of statins on cardiovascular diseases.
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