Reduced expression of the hyphal-independent Candida albicans proteinase genes SAP1 and SAP3 in the efg1 mutant is associated with attenuated virulence during infection of oral epithelium
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چکیده
منابع مشابه
Reduced expression of the hyphal-independent Candida albicans proteinase genes SAP1 and SAP3 in the efg1 mutant is associated with attenuated virulence during infection of oral epithelium.
The transition of Candida albicans from a yeast to a hyphal form is controlled by several transcriptional factors, including the key regulators Cph1 and Efg1, and is considered an important virulence attribute. These factors, especially Efg1, regulate the expression of hyphal-associated genes e.g. SAP4-SAP6. In order to investigate the relevance of these transcriptional regulators for hyphal-in...
متن کاملDisruption of each of the secreted aspartyl proteinase genes SAP1, SAP2, and SAP3 of Candida albicans attenuates virulence.
Secreted aspartyl proteinases (Saps), encoded by a gene family with at least nine members (SAP1 to SAP9), are one of the most discussed virulence factors produced by the human pathogen Candida albicans. In order to study the role of each Sap isoenzyme in pathogenicity, we have constructed strains which harbor mutations at selected SAP genes. SAP1, SAP2, and SAP3, which are regulated differentia...
متن کاملCandida albicans hyphal formation and the expression of the Efg1-regulated proteinases Sap4 to Sap6 are required for the invasion of parenchymal organs.
The ability to change between yeast and hyphal cells (dimorphism) is known to be a virulence property of the human pathogen Candida albicans. The pathogenesis of disseminated candidosis involves adhesion and penetration of hyphal cells from a colonized mucosal site to internal organs. Parenchymal organs, such as the liver and pancreas, are invaded by C. albicans wild-type hyphal cells between 4...
متن کاملDifferential expression of secretory aspartyl proteinase genes (SAP1-10) in oral Candida albicans isolates with distinct karyotypes.
Two karyotypes of oral Candida albicans isolates, named b and c, constituted >80% of a collection from healthy carriers (22 b and 16 c isolates) and oral candidiasis patients who were either infected (31 b and 16 c isolates) or uninfected (13 b and 38 c isolates) with human immunodeficiency virus (HIV). The prevalence of the b and c karyotypes within HIV-positive and HIV-negative patients, resp...
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ژورنال
عنوان ژورنال: Journal of Medical Microbiology
سال: 2003
ISSN: 0022-2615,1473-5644
DOI: 10.1099/jmm.0.05125-0