ERK promotes tumorigenesis by inhibiting FOXO3a via MDM2-mediated degradation

This study elucidates a novel pathway in cell growth and tumorigenesis through negative regulation of FOXO3a by RAS–ERK and MDM2 and downregulates Forkhead box O 3a by directly interacting with and phosphorylating FOXO 3a at Ser 294, Ser 344 and Ser 425.