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- W2891853104 abstract "Abstract The p53 protein plays a major role in cancer prevention, and over 50 % of cancer diagnoses can be attributed to p53 malfunction. The common p53 mutation Y220C causes local protein unfolding, aggregation, and can result in a loss of Zn in the DNA‐binding domain. Structural analysis has shown that this mutant creates a surface site that can be stabilized using small molecules, and herein a multifunctional approach to restore function to p53‐Y220C is reported. A series of compounds has been designed that contain iodinated phenols aimed for interaction and stabilization of the p53‐Y220C surface cavity, and Zn‐binding fragments for metallochaperone activity. Their Zn‐binding affinity was characterized using spectroscopic methods and demonstrate the ability of compounds L4 and L5 to increase intracellular levels of Zn 2+ in a p53‐Y220C‐mutant cell line. The in vitro cytotoxicity of our compounds was initially screened by the National Cancer Institute (NCI‐60), followed by testing in three stomach cancer cell lines with varying p53 status’, including AGS (WTp53), MKN1 (V143A), and NUGC3 (Y220C). Our most promising ligand, L5 , is nearly 3‐fold more cytotoxic than cisplatin in a large number of cell lines. The impressive cytotoxicity of L5 is further maintained in a NUGC3 3D spheroid model. L5 also induces Y220C‐specific apoptosis in a cleaved caspase‐3 assay, reduces levels of unfolded mutant p53, and recovers p53 transcriptional function in the NUGC3 cell line. These results show that these multifunctional scaffolds have the potential to restore wild‐type function in mutant p53‐Y220C." @default.
- W2891853104 created "2018-09-27" @default.
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- W2891853104 date "2018-11-09" @default.
- W2891853104 modified "2023-10-03" @default.
- W2891853104 title "Multifunctional Compounds for Activation of the p53-Y220C Mutant in Cancer" @default.
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- W2891853104 doi "https://doi.org/10.1002/chem.201802677" @default.
- W2891853104 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30230059" @default.
- W2891853104 hasPublicationYear "2018" @default.
- W2891853104 type Work @default.