COS-1, a putative two-component histidine kinase of Candida albicans, is an in vivo virulence factor

Tipo de material: Texto

TextoSeries ; Medical Mycology, 39, p.69-74, 2001Trabajos contenidos:

Selitrennikoff, C.P
Alex, L
Miller, T. K
Clemons, K. V
Simon, M. I
Stevens, D. A

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Resumen: The human fungal pathogen, Candida albicans, has three putative histidine kinases showing homology to those of plants, bacteria and other fungi. We have constructed a homozygous deletion strain and a hemizygous reconstituted strain of one of these histidine-kinase-encoding genes, COS-1, in C. albicans. Neither strain showed any growth defect in a number of liquid media nor increased resistance or sensitivity to a number of antifungal drugs. Importantly, we show that the COS-1 homozygous disruption strain had significantly reduced virulence in a systemic murine model of candidosis. Thus, COS-1 appears to be an in vivo virulence factor and may represent a novel target for the development of antifungal drugs.

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The human fungal pathogen, Candida albicans, has three putative histidine kinases showing homology to those of plants, bacteria and other fungi. We have constructed a homozygous deletion strain and a hemizygous reconstituted strain of one of these histidine-kinase-encoding genes, COS-1, in C. albicans. Neither strain showed any growth defect in a number of liquid media nor increased resistance or sensitivity to a number of antifungal drugs. Importantly, we show that the COS-1 homozygous disruption strain had significantly reduced virulence in a systemic murine model of candidosis. Thus, COS-1 appears to be an in vivo virulence factor and may represent a novel target for the development of antifungal drugs.

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