Restoring p53 Function in Human Melanoma Cells by Inhibiting MDM2 and Cyclin B1/CDK1-Phosphorylated Nuclear iASPP

(Cancer Cell 23, 618–633; May 13, 2013) In the original Figure 4G, two of the upper panels (His-iASPP(625-828)-FITC; the two rightmost panels) were inadvertently duplicated in the lower set of panels (His-ASPP2(905-1128)-FITC; third and fourth from left). This was a mistake made by the authors during the assembly of the figure. This error does not affect any of the findings reported in the paper. The corrected Figure 4 is presented below. The authors apologize for any confusion that this error may have caused. Restoring p53 Function in Human Melanoma Cells by Inhibiting MDM2 and Cyclin B1/CDK1-Phosphorylated Nuclear iASPPLu et al.Cancer CellApril 25, 2013In BriefNearly 90% of human melanomas contain inactivated wild-type p53, the underlying mechanisms for which are not fully understood. Here, we identify that cyclin B1/CDK1-phosphorylates iASPP, which leads to the inhibition of iASPP dimerization, promotion of iASPP monomer nuclear entry, and exposure of its p53 binding sites, leading to increased p53 inhibition. Nuclear iASPP is enriched in melanoma metastasis and associates with poor patient survival. Most wild-type p53-expressing melanoma cell lines coexpress high levels of phosphorylated nuclear iASPP, MDM2, and cyclin B1. Full-Text PDF Open Archive