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lüll p53-family proteins and their regulators: hubs and spokes in tumor suppression Collavin L; Lunardi A; Del Sal GCell Death Differ 2010[Jun]; 17 (6): 901-11The tumor suppressor p53 is a central hub in a molecular network controlling cell proliferation and death in response to potentially oncogenic conditions, and a wide array of covalent modifications and protein interactions modulate the nuclear and cytoplasmic activities of p53. The p53 relatives, p73 and p63, are entangled in the same regulatory network, being subject at least in part to the same modifications and interactions that convey signals on p53, and actively contributing to the resulting cellular output. The emerging picture is that of an interconnected pathway, in which all p53-family proteins are involved in the response to oncogenic stress and physiological inputs. Therefore, common and specific interactors of p53-family proteins can have a wide effect on function and dysfunction of this pathway. Many years of research have uncovered an impressive number of p53-interacting proteins, but much less is known about protein interactions of p63 and p73. Yet, many interactors may be shared by multiple p53-family proteins, with similar or different effects. In this study we review shared interactors of p53-family proteins with the aim to encourage research into this field; this knowledge promises to unveil regulatory elements that could be targeted by a new generation of molecules, and allow more efficient use of currently available drugs for cancer treatment.|Animals[MESH]|Cytoplasm/metabolism[MESH]|DNA-Binding Proteins/metabolism/physiology[MESH]|Humans[MESH]|Mice[MESH]|Neoplasms/genetics/metabolism[MESH]|Nuclear Proteins/metabolism/physiology[MESH]|Protein Processing, Post-Translational[MESH]|Transcription Factors/*metabolism/physiology[MESH]|Tumor Protein p73[MESH]|Tumor Suppressor Protein p53/*metabolism/physiology[MESH]|Tumor Suppressor Proteins/*metabolism/physiology[MESH] |