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- W2026375152 abstract "Virulence of C. albicans strains can be tested using a mouse model of haematogenously disseminated Candida cells. Initial steps of host-pathogen contact such as adhesion and colonization are not taken into account due to the injection of Candida cells into the blood stream. Here we describe an assay, based on the ex vivo usage of porcine intestinal epithelium (PIE), that is useful to monitor the early stages of a C. albicans infection. The ability of C. albicans to undergo morphogenetic switching between yeast and hyphal stages is thought to contribute to its virulence. We found that hyphal formation was required to allow cells to colonize the PIE. The non-filamentous mutant strains efg1/cph1 which lacks two of the central transcription factors that are required to promote hyphal growth and wal1 that carries a deletion of the C. albicans homolog of the human Wiskott-Aldrich Syndrome Protein and is deficient in endocytosis showed only weak adherence. Furthermore, the wal1 mutant was found to be reduced in virulence using the mouse tail vein injection assay. We also analyzed the colonization properties of a variety of other mutant strains carrying deletions of either secreted aspartyl proteinase (SAP)-family genes or amino acid permease encoding genes (GAP1, SSY1, and PUT4). Interestingly, the nag5 strain which lacks an N-acetylglucosamine kinase showed enhanced filamentation and invasive growth as well as increased resistance against farnesol." @default.
- W2026375152 created "2016-06-24" @default.
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- W2026375152 date "2006-12-01" @default.
- W2026375152 modified "2023-10-01" @default.
- W2026375152 title "Use of the Porcine Intestinal Epithelium (PIE)-Assay to analyze early stages of colonization by the human fungal pathogenCandida albicans" @default.
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- W2026375152 doi "https://doi.org/10.1002/jobm.200610167" @default.
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