PMID- 12067898 OWN - NLM STAT- MEDLINE DCOM- 20020703 LR - 20220414 IS - 1524-4636 (Electronic) IS - 1079-5642 (Linking) VI - 22 IP - 6 DP - 2002 Jun 1 TI - Monocyte chemoattractant protein-1 induces proliferation and interleukin-6 production in human smooth muscle cells by differential activation of nuclear factor-kappaB and activator protein-1. PG - 914-20 AB - Inflammatory response and chemotaxis of vascular wall cells play an important pathogenic role in the development of atherosclerosis. Monocyte chemoattractant protein-1 (MCP-1) is a potent chemoattractant for monocytes. Besides the induction of monocyte recruitment, it has been suggested that MCP-1 may directly activate smooth muscle cells. We investigated whether MCP-1 affects the proliferation and cytokine production of human vascular smooth muscle cells (VSMCs) and determined the underlying signal transduction pathways. Stimulation of VSMCs with MCP-1 induced proliferation and resulted in a concentration- and time-dependent release of the proinflammatory cytokine interleukin-6 (IL-6). Pretreatment with pertussis toxin, GF109203X, and pyrrolidine dithiocarbamate inhibited MCP-1-dependent IL-6 release, suggesting the involvement of G(i) proteins, protein kinase C, and nuclear factor-kappaB (NF-kappaB). MCP-1 also induced extracellular signal-regulated kinase, which, along with IL-6 release, was inhibited by pertussis toxin. PD98059 prevented MCP-1-induced extracellular signal-regulated kinase activation and cell proliferation. MCP-1 stimulated the binding activity of NF-kappaB and of activator protein-1 (AP-1). As demonstrated by cis element double-stranded (decoy) oligodeoxynucleotides, NF-kappaB was involved in IL-6 release by MCP-1, whereas proliferation was dependent on AP-1. The results clearly demonstrate that MCP-1 induces differential activation of NF-kappaB and AP-1 in VSMCs. Thus, our data propose a new mechanism for the proatherogenic effect of MCP-1. FAU - Viedt, Christiane AU - Viedt C AD - Innere Medizin III, Universitat Heidelberg, Germany. FAU - Vogel, Judith AU - Vogel J FAU - Athanasiou, Thomas AU - Athanasiou T FAU - Shen, Weili AU - Shen W FAU - Orth, Stephan R AU - Orth SR FAU - Kubler, Wolfgang AU - Kubler W FAU - Kreuzer, Jorg AU - Kreuzer J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Arterioscler Thromb Vasc Biol JT - Arteriosclerosis, thrombosis, and vascular biology JID - 9505803 RN - 0 (CCR2 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (Growth Substances) RN - 0 (Interleukin-6) RN - 0 (NF-kappa B) RN - 0 (RNA, Messenger) RN - 0 (Receptors, CCR2) RN - 0 (Receptors, Chemokine) RN - 0 (Recombinant Proteins) RN - 0 (Transcription Factor AP-1) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 1) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 3) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinases) SB - IM MH - Cell Division/physiology MH - Chemokine CCL2/*physiology MH - Coronary Artery Bypass MH - Enzyme Activation/physiology MH - Growth Substances/*physiology MH - Humans MH - Inflammation/metabolism MH - Interleukin-6/*biosynthesis/metabolism MH - Mitogen-Activated Protein Kinase 1/metabolism MH - Mitogen-Activated Protein Kinase 3 MH - Mitogen-Activated Protein Kinases/metabolism MH - Muscle, Smooth, Vascular/*cytology/*metabolism MH - NF-kappa B/*physiology MH - RNA, Messenger/biosynthesis MH - Receptors, CCR2 MH - Receptors, Chemokine/biosynthesis MH - Recombinant Proteins/metabolism MH - Saphenous Vein/cytology MH - Transcription Factor AP-1/*physiology EDAT- 2002/06/18 10:00 MHDA- 2002/07/04 10:01 CRDT- 2002/06/18 10:00 PHST- 2002/06/18 10:00 [pubmed] PHST- 2002/07/04 10:01 [medline] PHST- 2002/06/18 10:00 [entrez] AID - 10.1161/01.atv.0000019009.73586.7f [doi] PST - ppublish SO - Arterioscler Thromb Vasc Biol. 2002 Jun 1;22(6):914-20. doi: 10.1161/01.atv.0000019009.73586.7f.