Abstract
Hypertension causes endothelial dysfunction, which plays an important role in atherogenesis. The vascular cell adhesion molecule-1 (VCAM-1) contributes to atherosclerotic lesion formation by recruiting leukocytes from blood into tissues. Tumor necrosis factor-α (TNFα) induces endothelial dysfunction and VCAM-1 expression in endothelial cells (ECs). We examined whether the cAMP-response element binding protein (CREB), a transcription factor that mediates cytokine expression and vascular remodeling, is involved in TNFα-induced VCAM-1 expression. TNFα induced phosphorylation of CREB with a peak at 15 min of stimulation in a dose-dependent manner in bovine aortic ECs. Pharmacological inhibition of p38 mitogen-activated protein kinase (p38-MAPK) inhibited TNFα-induced CREB phosphorylation. Adenovirus-mediated overexpression of a dominant-negative form of CREB suppressed TNFα-induced VCAM-1 and c-fos expression. Although activating protein 1 DNA binding activity was attenuated by overexpression of dominant negative CREB, nuclear factor-κB activity was not affected. Our results suggest that the p38-MAPK/CREB pathway plays a critical role in TNFα-induced VCAM-1 expression in vascular endothelial cells. The p38-MAPK/CREB pathway may be a novel therapeutic target for the treatment of atherosclerosis.
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Ono, H., Ichiki, T., Ohtsubo, H. et al. cAMP-Response Element-Binding Protein Mediates Tumor Necrosis Factor-α-Induced Vascular Cell Adhesion Molecule-1 Expression in Endothelial Cells. Hypertens Res 29, 39–47 (2006). https://doi.org/10.1291/hypres.29.39
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DOI: https://doi.org/10.1291/hypres.29.39
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