An Oxidized Extracellular Oxidation-Reduction State Increases Nox1 Expression and Proliferation in Vascular Smooth Muscle Cells Via Epidermal Growth Factor Receptor Activation
- 1 November 2010
- journal article
- research article
- Published by Wolters Kluwer Health in Arteriosclerosis, Thrombosis, and Vascular Biology
- Vol. 30 (11), 2234-2241
- https://doi.org/10.1161/atvbaha.110.207639
Abstract
Objective—To examine the effect of an oxidized extracellular oxidation-reduction (redox) state (Eh) on the expression of NADPH oxidases in vascular cells. Methods and Results—The generation of reactive oxygen species by NADPH oxidase (Nox)-based NADPH oxidases activates redox-dependent signaling pathways and contributes to the development of “oxidative stress” in vascular disease. An oxidized plasma redox state is associated with cardiovascular disease in humans; however, the cellular mechanisms by which the extracellular redox state may cause disease are not known. Aortic segments and cultured aortic smooth muscle cells were exposed to Eh between −150 mV (reduced) and 0 mV (oxidized) by altering the concentration of cysteine and its disulfide, cystine, the predominant redox couple in plasma. A more oxidized Eh increased the expression of Nox1 and resulted in Nox1-dependent proliferation of smooth muscle cells. Oxidized Eh rapidly induced epidermal growth factor receptor phosphorylation via shedding of ep...Keywords
This publication has 61 references indexed in Scilit:
- A Differential Role for Endocytosis in Receptor-Mediated Activation of Nox1Antioxidants and Redox Signaling, 2010
- NADPH oxidases are responsible for the failure of nitric oxide to inhibit migration of smooth muscle cells exposed to high glucoseFree Radical Biology & Medicine, 2009
- Mechanisms of Vascular Smooth Muscle NADPH Oxidase 1 (Nox1) Contribution to Injury-Induced Neointimal FormationArteriosclerosis, Thrombosis, and Vascular Biology, 2009
- Cysteine Redox Potential Determines Pro-Inflammatory IL-1β LevelsPLOS ONE, 2009
- Regulation of Mature ADAM17 by Redox Agents for L-Selectin SheddingThe Journal of Immunology, 2009
- Redox Signaling, Vascular Function, and HypertensionAntioxidants and Redox Signaling, 2008
- Nox1 Expression Determines Cellular Reactive Oxygen and Modulates c-fos-Induced Growth Factor, Interleukin-8, and Cav-1The American Journal of Pathology, 2007
- Nox1 Mediates Basic Fibroblast Growth Factor-Induced Migration of Vascular Smooth Muscle CellsArteriosclerosis, Thrombosis, and Vascular Biology, 2007
- Novel transcripts of Nox1 are regulated by alternative promoters and expressed under phenotypic modulation of vascular smooth muscle cellsBiochemical Journal, 2006
- NADPH Oxidases in Cardiovascular Health and DiseaseAntioxidants and Redox Signaling, 2006