Quantitative immunoblot analyses were conducted using standard procedures [16 (link)]. Antibodies directed to ERK1/2 (#9102), phospho-ERK1/2 (#9101), VEGFR2 (#9698), phospho-VEGFR2 Tyr1115 (#3770), acetyl-histone H4 Lys8 (#2594), phospho-AKT Thr308 (#4056), phospho-AKT Ser473 (#3787), AKT (#4691), phospho-FOXO1 Ser256 (#9461), FOXO1 (#2880), phospho-4EBP1 Thr37/46 (#2855), phospho-S6K Ser235/236 (#4858) were purchased from Cell Signaling Technology and used at dilutions of 1:1000. Antibodies to RET (# ab134100) and phospho-RET Tyr 1062 (#ab51103) were purchased from Abcam and used at dilutions of 1:10,000 and 1:2000 respectively. Antibodies to Actin (#A2228) were from Sigma-Aldrich and used at dilution 1:10,000.
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