Journal
ANTIMICROBIAL AGENTS AND CHEMOTHERAPY
Volume 48, Issue 12, Pages 4505-4512Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/AAC.48.12.4505-4512.2004
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Overexpression of CDR1, an efflux pump, is one of the major mechanisms contributing to drug resistance in Candida albicans. CDR1 p-lacZ was constructed and transformed into a Saccharomyces cerevisiae strain so that the lacZ gene could be used as the reporter to monitor the activity of the CDR1 promoter. Overexpression of CaNDT80, the C albicans homolog of S. cerevisiae NDT80, increases the beta-galactosidase activity of the CDR1 p-lacZ construct in S. cerevisiae. Furthermore, mutations in CaNDT80 abolish the induction of CDR1 expression by antifungal agents in C albicans. Consistently, the Candt80/Candt80 mutant is also more susceptible to antifungal drugs than the wild-type strain. Thus, the gene for CaNdt80 may be the first gene among the regulatory factors involved in drug resistance in C. albicans whose function has been identified.
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