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    Science. 1999 Sep 10;285(5434):1733-7.

    A chemical inhibitor of p53 that protects mice from the side effects of cancer therapy.

    Komarov PG, Komarova EA, Kondratov RV, Christov-Tselkov K, Coon JS, Chernov MV, Gudkov AV.

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    Department of Molecular Genetics, University of Illinois at Chicago, Chicago, IL 60607, USA.

    Abstract

    Chemotherapy and radiation therapy for cancer often have severe side effects that limit their efficacy. Because these effects are in part determined by p53-mediated apoptosis, temporary suppression of p53 has been suggested as a therapeutic strategy to prevent damage of normal tissues during treatment of p53-deficient tumors. To test this possibility, a small molecule was isolated for its ability to reversibly block p53-dependent transcriptional activation and apoptosis. This compound, pifithrin-alpha, protected mice from the lethal genotoxic stress associated with anticancer treatment without promoting the formation of tumors. Thus, inhibitors of p53 may be useful drugs for reducing the side effects of cancer therapy and other types of stress associated with p53 induction.

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    PMID:
    10481009
    [PubMed - indexed for MEDLINE]

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