A and B, The indicated cell lines were treated with different concentrations of MK2206 or API-2 as indicated for 24 h and then subjected to preparation of whole-cell protein lysates and subsequent Western blot analysis for the given proteins. C and D, The indicated cell lines were seeded in 96-well cell culture plates and treated the next day with the given concentrations of MK2206 or API-2 alone, TRAIL alone, or TRAIL plus MK2206 or API-2. After 24 h, cell numbers were estimated using the SRB assay. Data are the means of four replicate determinations. Bars, ± SDs.