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RESEARCH PRODUCT
Dosage-dependent roles of the Cwt1 transcription factor for cell wall architecture, morphogenesis, drug sensitivity and virulence in Candida albicans.
Leslie LaforetMaría Martínez-esparzaRafael SentandreuEulogio ValentínJoachim F. ErnstInmaculada MorenoInmaculada Morenosubject
Antifungal AgentsMutantMorphogenesisGene DosageHyphaeVirulenceBioengineeringApplied Microbiology and BiotechnologyBiochemistryMicrobiologyCell wallFungal ProteinsMiceCell WallDrug Resistance FungalGene Expression Regulation FungalCandida albicansGeneticsMorphogenesisAnimalsHumansCandida albicansDNA FungalTranscription factorOligonucleotide Array Sequence AnalysisMembrane GlycoproteinsbiologyVirulenceHomozygoteCandidiasisbiology.organism_classificationPhenotypeCorpus albicansMutationBiotechnologyTranscription Factorsdescription
The Cwt1 transcription factor is involved in cell wall architecture of the human fungal pathogen Candida albicans. We demonstrate here that deficiency of Cwt1 leads to decreased β1,6-glucan in the cell wall, while mannoproteins are increased in the cell wall of exponentially growing cells and are released into the medium of stationary phase cells. Hyphal morphogenesis of cwt1 mutants is reduced on the surfaces of some inducing media. Unexpectedly, the CWT1/cwt1 heterozygous strains shows some stronger in vitro phenotypes compared to the homozygous mutant. The heterozygous but not the homozygous strain is also strongly impaired for its virulence in a mouse model of systemic infection. We suggest that an intermediate dosage of Cwt1 affects phenotypes profoundly, while its complete absence may elicit compensatory responses of C. albicans. Copyright © 2009 John Wiley & Sons, Ltd.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-11-13 | Yeast (Chichester, England) |