After the indicated incubation times, HLMVECs were washed once with ice-cold phosphate-buffered saline (Gibco Invitrogen), scraped from the bottom of the plate, collected, and lysed with radio-immunoprecipitation buffer (Boston Bioproducts, Ashland, MA) supplemented with protease inhibitor cocktail, 200 mM of phenylmethylsulfonyl fluoride, 1 mM of EDTA, 1 mM of sodium fluoride, and 1 mM of sodium orthovanadate (all from Sigma-Aldrich) as previously described.22 (link),23 (link)