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A cell-based high-throughput assay for the screening of small-molecule inhibitors of p53-MDM2 interaction



A cell-based high-throughput assay for the screening of small-molecule inhibitors of p53-MDM2 interaction



Journal of Biomolecular Screening 16(4): 450-456



The p53 tumor suppressor is a potent transcription factor that regulates cell growth inhibition and apoptosis. The oncoprotein MDM2 suppresses p53 activity by direct inhibition of its transcriptional activity and enhances the degradation of p53 via the ubiquitin-proteosome pathway. Overexpression of MDM2, found in many human tumors, impairs p53-mediated cell death effectively. Inhibition of the p53-MDM2 interaction can stabilize p53 and may offer a novel strategy for cancer therapy. To search for new inhibitors of the p53-MDM2 interaction, the authors developed a cell-based high-throughput assay system based on mammalian two-hybrid technology. They also used a dual-luciferase reporter system to rule out false- positive hits due to the cytotoxic effect of compounds. Using this assay, they screened a library consisting of 3840 compounds and identified one compound that activates p53 pathway and induces growth arrest in tumor cells.

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Accession: 051098469

Download citation: RISBibTeXText

PMID: 21471462

DOI: 10.1177/1087057111399191


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