Abstract:
:Retinoic acid modulates cell growth and differentiation of the vascular system. Vascular endothelial growth factor (VEGF) is known as a vascular permeability factor and a potent mitogen for vascular endothelial cells. In the present study, we investigated whether retinoic acid induces VEGF release in aortic smooth muscle A10 cells and if so, the mechanism of VEGF release. Retinoic acid stimulated VEGF release dose-dependently over the range 0.1 nM-0.1 microM. The retinoic acid-stimulated VEGF release was significantly reduced by actinomycin D. Retinoic acid induced the phosphorylation of p44/p42 mitogen-activated protein (MAP) kinase but not p38 MAP kinase or stress-activated protein kinase/c-Jun N-terminal kinase among the MAP kinase superfamily. This effect of retinoic acid was dose-dependent (30 nM-5 microM) and the maximum effect was observed at 0.3 microM. The retinoic acid-stimulated release of VEGF was significantly reduced by PD98059 and U0126, specific MEK inhibitors, which attenuated the retinoic acid-induced phosphorylation of p44/p42 MAP kinase. These results strongly suggest that retinoic acid stimulates the release of VEGF in a p44/p42 MAP kinase-dependent manner in aortic smooth muscle cells.
journal_name
Atherosclerosisjournal_title
Atherosclerosisauthors
Tanabe K,Hirade K,Ishisaki A,Shu E,Suga H,Kitajima Y,Katagiri Y,Dohi S,Kozawa Odoi
10.1016/j.atherosclerosis.2004.05.002keywords:
subject
Has Abstractpub_date
2004-08-01 00:00:00pages
245-51issue
2eissn
0021-9150issn
1879-1484pii
S0021-9150(04)00229-1journal_volume
175pub_type
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