PMID- 20349326 OWN - NLM STAT- MEDLINE DCOM- 20101130 LR - 20211020 IS - 1420-908X (Electronic) IS - 1023-3830 (Print) IS - 1023-3830 (Linking) VI - 59 IP - 9 DP - 2010 Sep TI - Role of NADPH oxidase in interleukin-4-induced monocyte chemoattractant protein-1 expression in vascular endothelium. PG - 755-65 LID - 10.1007/s00011-010-0187-3 [doi] AB - OBJECTIVE AND DESIGN: The pro-oxidative and pro-inflammatory pathways in vascular endothelium have been implicated in the development of atherosclerosis. In the present study, we investigated effect of interleukin-4 (IL-4) on monocyte chemoattractant protein-1 (MCP-1) expression in vascular endothelium and examined the role of distinct sources of reactive oxygen species (ROS) in this process. METHODS AND RESULTS: Real-time reverse transcriptase-polymerase chain reaction and enzyme-linked immunosorbent assay showed that IL-4 significantly up-regulated mRNA and protein expression of MCP-1 in human aortic endothelial cells (HAEC) and C57BL/6 mice. A significant and dose-dependent inhibition of IL-4-induced MCP-1 expression was observed in HAEC pre-treated with antioxidants, such as pyrrolidine dithiocarbamate and epigallocatechin gallate, indicating that IL-4-induced MCP-1 expression is mediated via a ROS-dependent mechanism. Additionally, pharmacological inhibitors of NADPH oxidase (NOX) significantly attenuated IL-4-induced MCP-1 expression in HAEC. Furthermore, the disruption of the NOX gene dramatically reduced IL-4-induced MCP-1 expression in NOX knockout mice (B6.129S6-Cybb(tm1Din)/J). In contrast, overexpression of MCP-1 in IL-4-stimulated HAEC was not affected by inhibiting other ROS generating pathways, such as xanthine oxidase and the mitochondrial electron transport chain. CONCLUSIONS: These results demonstrate that IL-4 up-regulates MCP-1 expression in vascular endothelium through NOX-mediated ROS generation. FAU - Lee, Yong Woo AU - Lee YW AD - Department of Biomedical Sciences and Pathobiology, School of Biomedical Engineering and Sciences, Virginia Polytechnic Institute and State University (Virginia Tech), Blacksburg, VA 24061, USA. ywlee@vt.edu FAU - Lee, Won Hee AU - Lee WH FAU - Kim, Paul H AU - Kim PH LA - eng GR - R15 HL085229/HL/NHLBI NIH HHS/United States GR - R15 HL085229-01A1/HL/NHLBI NIH HHS/United States GR - HL085229/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20100328 PL - Switzerland TA - Inflamm Res JT - Inflammation research : official journal of the European Histamine Research Society ... [et al.] JID - 9508160 RN - 0 (Antioxidants) RN - 0 (Chemokine CCL2) RN - 207137-56-2 (Interleukin-4) RN - EC 1.6.3.- (NADPH Oxidases) SB - IM MH - Animals MH - Antioxidants/pharmacology MH - Aorta/drug effects/enzymology MH - Cells, Cultured MH - Chemokine CCL2/*metabolism MH - Endothelium, Vascular/*drug effects/enzymology/*metabolism MH - Humans MH - Interleukin-4/*metabolism MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - NADPH Oxidases/analysis/antagonists & inhibitors/*metabolism MH - Up-Regulation/drug effects PMC - PMC2916038 MID - NIHMS194801 EDAT- 2010/03/30 06:00 MHDA- 2010/12/14 06:00 PMCR- 2011/09/01 CRDT- 2010/03/30 06:00 PHST- 2009/09/14 00:00 [received] PHST- 2010/03/05 00:00 [accepted] PHST- 2010/01/12 00:00 [revised] PHST- 2010/03/30 06:00 [entrez] PHST- 2010/03/30 06:00 [pubmed] PHST- 2010/12/14 06:00 [medline] PHST- 2011/09/01 00:00 [pmc-release] AID - 10.1007/s00011-010-0187-3 [doi] PST - ppublish SO - Inflamm Res. 2010 Sep;59(9):755-65. doi: 10.1007/s00011-010-0187-3. Epub 2010 Mar 28.