Abstract
The p53 tumor suppressor is the most frequently inactivated gene in cancer. Several mouse models have demonstrated that the reconstitution of the p53 function suppresses the growth of established tumors. These facts, taken together, promote the idea of p53 reactivation as a strategy to combat cancer. This review will focus on recent advances in the development of small molecules which restore the function of wild type p53 by blocking its inhibitors Mdm2 and MdmX or their upstream regulators and discuss the impact of different p53 functions for tumor prevention and tumor eradication. Finally, the recent progress in p53 research will be analyzed concerning the role of p53 cofactors and cellular environment in the biological response upon p53 reactivation and how this can be applied in clinic.
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