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    Biochem J. 1990 Jun 1;268(2):309-15.

    Expression of human glutathione S-transferases in Saccharomyces cerevisiae confers resistance to the anticancer drugs adriamycin and chlorambucil.

    Source

    Imperial Cancer Research Fund, University of Edinburgh Department of Biochemistry.

    Abstract

    Adaptation and resistance to chemicals in the environment is a critical part of the evolutionary process. As a result, a wide variety of defence systems that protect cells against chemical insult have evolved. Such chemical resistance mechanisms appear to play a central role in determining the sensitivity of human tumours to treatment with chemotherapeutic drugs. The glutathione S-transferases (GST) are important detoxification enzymes whose over-expression has been associated with drug-resistance. In order to evaluate this possibility we have expressed the human Alpha-class and Pi-class GST cDNAs that encode GST B1B1 and GST pi in the yeast Saccharomyces cerevisiae. The expression of GST B1B1 or GST pi resulted in a marked reduction in the cytotoxic effects of chlorambucil, a bifunctional alkylating agent, and an anthracycline, adriamycin. These data provide direct evidence that the over-expression of GST in cells can confer resistance to anticancer drugs.

    PMID:
    2194447
    [PubMed - indexed for MEDLINE]
    PMCID: PMC1131433
    Free PMC Article

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