Valdimarsdottir et al., BMC cell biology 2006
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Ectopic expression of Smad7 or PP1alpha potently inhibited TGF-beta/ALK1 induced Smad1/5 phosphorylation in ECs
Ungefroren et al., Curr Cancer Drug Targets 2011
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Likewise, PP2 and PP1 but not SU6656 effectively blocked TGF-ß1 induced activation of Smad2 and p38 MAPK and partially suppressed Smad activation and transcriptional activity on TGF-ß/Smad-responsive reporters of a kinase-active TßRI mutant ectopically expressed in Panc1 cells