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- W2019777782 abstract "Background information . TGFβ (transforming growth factor β) is a multifunctional cytokine and a potent regulator of cell growth, migration and differentiation in many cell types. In the vascular system, TGFβ plays crucial roles in vascular remodelling, but the signalling pathways involved remain poorly characterized. Results . Using the model of porcine aortic endothelial cells, we demonstrated that TGFβ stimulates cellular spreading when cells are on collagen I. TGFβ‐stimulated Rac1–GTP accumulation, which was associated with increased MAPK (mitogen‐activated protein kinase) p38 phosphorylation. Furthermore, ectopic expression of a dominant‐negative Rac mutant, or treatment of the cells with the p38 pharmacological inhibitor SB203580, abrogated TGFβ‐induced cell spreading. Our results demonstrate for the first time that prolonged exposure to TGFβ stimulates endothelial cell hypertrophy and flattening. Collectively, these data indicate that TGFβ‐induced cell spreading and increase in cell surface areas occurs via a Rac—p38‐dependent pathway. Conclusions . The Rac—p38 pathway may have conceptual implications in pathophysiological endothelial cell responses to TGFβ, such as wound healing or development of atherosclerotic lesions." @default.
- W2019777782 created "2016-06-24" @default.
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- W2019777782 date "2008-09-01" @default.
- W2019777782 modified "2023-10-11" @default.
- W2019777782 title "TGFβ1 regulates endothelial cell spreading and hypertrophy through a Rac-p38-mediated pathway" @default.
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- W2019777782 doi "https://doi.org/10.1042/bc20080021" @default.
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