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- W2016095963 abstract "We have previously shown that Rap1 as well as its guanine nucleotide exchange factor Epac1 increases cell-cell junction formation. Here, we show that activation of Epac1 with the exchange protein directly activated by cAMP (Epac)-specific cAMP analog 8CPT-2'O-Me-cAMP (007) resulted in a tightening of the junctions and a decrease in the permeability of the endothelial cell monolayer. In addition, 007 treatment resulted in the breakdown of actin stress fibers and the formation of cortical actin. These effects were completely inhibited by siRNA against Epac1. In VE-cadherin knock-out cells Epac1 did not affect cell permeability, whereas in cells re-expressing VE-cadherin this effect was restored. Finally, the effect of Epac activation on the actin cytoskeleton was independent of junction formation. From these results we conclude that in human umbilical vein endothelial cells Epac1 controls VE-cadherin-mediated cell junction formation and induces reorganization of the actin cytoskeleton." @default.
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- W2016095963 date "2005-08-15" @default.
- W2016095963 modified "2023-10-14" @default.
- W2016095963 title "Epac1 regulates integrity of endothelial cell junctions through VE-cadherin" @default.
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- W2016095963 doi "https://doi.org/10.1016/j.febslet.2005.07.080" @default.
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