Abstract
Pleiotropic drug resistance (PDR) is a well-described phenomenon occurring in fungi. PDR shares several similarities with processes in bacteria and higher eukaryotes. In mammalian cells, multidrug resistance (MDR) develops from an initial single drug resistance, eventually leading to a broad cross-resistance to many structurally and functionally unrelated compounds. Notably, a number of membrane-embedded energy-consuming ATP-binding cassette (ABC) transporters have been implicated in the development of PDR/MDR phenotypes. The yeast Saccharomyces cerevisiae genome harbors some 30 genes encoding ABC proteins, several of which mediate PDR. Therefore, yeast served as an important model organism to study the functions of evolutionary conserved ABC genes, including those mediating clinical antifungal resistance in fungal pathogens. Moreover, yeast cells lacking endogenous ABC pumps are hypersensitive to many antifungal drugs, making them suitable for functional studies and cloning of ABC transporters from fungal pathogens such as Candida albicans. This review discusses drug resistance phenomena mediated by ABC transporters in the model system S. cerevisiae and certain fungal pathogens.
Keywords: Fungal ABC transporters, PDR network, drug resistance, stress, regulation
Current Drug Targets
Title: Fungal ATP-Binding Cassette (ABC) Transporters in Drug Resistance & Detoxification
Volume: 7 Issue: 4
Author(s): Gyorgy Sipos and Karl Kuchler
Affiliation:
Keywords: Fungal ABC transporters, PDR network, drug resistance, stress, regulation
Abstract: Pleiotropic drug resistance (PDR) is a well-described phenomenon occurring in fungi. PDR shares several similarities with processes in bacteria and higher eukaryotes. In mammalian cells, multidrug resistance (MDR) develops from an initial single drug resistance, eventually leading to a broad cross-resistance to many structurally and functionally unrelated compounds. Notably, a number of membrane-embedded energy-consuming ATP-binding cassette (ABC) transporters have been implicated in the development of PDR/MDR phenotypes. The yeast Saccharomyces cerevisiae genome harbors some 30 genes encoding ABC proteins, several of which mediate PDR. Therefore, yeast served as an important model organism to study the functions of evolutionary conserved ABC genes, including those mediating clinical antifungal resistance in fungal pathogens. Moreover, yeast cells lacking endogenous ABC pumps are hypersensitive to many antifungal drugs, making them suitable for functional studies and cloning of ABC transporters from fungal pathogens such as Candida albicans. This review discusses drug resistance phenomena mediated by ABC transporters in the model system S. cerevisiae and certain fungal pathogens.
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Cite this article as:
Sipos Gyorgy and Kuchler Karl, Fungal ATP-Binding Cassette (ABC) Transporters in Drug Resistance & Detoxification, Current Drug Targets 2006; 7 (4) . https://dx.doi.org/10.2174/138945006776359403
DOI https://dx.doi.org/10.2174/138945006776359403 |
Print ISSN 1389-4501 |
Publisher Name Bentham Science Publisher |
Online ISSN 1873-5592 |
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