Meta-Biol

• Pathways

Estrogen treatment stimulates autophosphorylation of SRC at tyrosine 419 (Haynes et al, 2003). SRC catalytic activity is required for signaling to PI3K, AKT and eNOS, as both a kinase dead version of SRC and treatment of cells with a SRC inhibitor abrogate phosphorylation of these downstream targets. SRC interacts with the p85 regulatory subunit of PI3K and in this way promotes assembly of an estrogen-responsive signaling complex in the caveolae (Simoncini et al, 2000; Hayes et al, 2003; Castoria et al, 2001; Castoria et al, 2012; Le Romancer et al, 2008).