Decreased Mdm2 expression inhibits tumor development and extends survival independent of Arf and dependent on p53.
Inactivation of the Arf-Mdm2-p53 tumor suppressor pathway is a necessary event for tumorigenesis.Arf controls Mdm2, which in turn regulates p53, but Arf and Mdm2 also have p53-independent ROSE PURE CASTILE SOAP functions that affect tumor development.Moreover, inhibition of oncogene-induced tumorigenesis relies on Arf and p53, but the requirements