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Type I collagen synergistically enhances PDGF-induced smooth muscle cell proliferation through pp60src-dependent crosstalk between the alpha2beta1 integrin and PDGFbeta receptor.
Biochem Biophys Res Commun
December 2004
Columbia Weill Cornell Division of Vascular Surgery, Weill Medical College of Cornell University, USA.
Smooth muscle cells (SMCs) are exposed to both platelet-derived growth factor (PDGF) and type I collagen (CNI) at the time of arterial injury. In these studies we explore the individual and combined effects of these agonists on human saphenous vein SMC proliferation. PDGF-BB produced a 5.
View Article and Find Full Text PDFDi(adenosine-5')oligophosphate nucleotides of general structure ApnA (n = 2-6) inhibited phosphorylation of immunoglobulin G from tumor-bearing rabbits (TBR IgG) by pp60src protein kinase purified from Rous sarcoma virus-transformed rat tumor cells. Ap4A, a nucleotide associated with eukaryotic cell proliferation, was one of the most effective inhibitors in the series, causing 50% inhibition of TBR IgG phosphorylation at 15 microM. Ap4A inhibited pp60src-dependent phosphorylation of TBR IgG in solution and immunoprecipitates, as well as the phosphorylation of tubulin, microtubule-associated proteins, and vinculin.
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