Release from Quorum-sensing molecules triggers hyphal formation during Candida albicans resumption of growth

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DOIResolve DOI: http://doi.org/10.1128/EC.4.7.1203-1210.2005
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TypeArticle
Journal titleEukaryotic Cell
Volume4
Issue7
Pages12031210; # of pages: 8
SubjectCandida; Candida albicans; Culture Media; Dna; Genes; pha
AbstractCandida albicans is a pathogenic fungus able to change morphology in response to variations in its growth environment. Simple inoculation of stationary cells into fresh medium at 37 degrees C, without any other manipulations, appears to be a powerful but transient inducer of hyphal formation; this process also plays a significant role in classical serum induction of hyphal formation. The mechanism appears to involve the release of hyphal repression caused by quorum-sensing molecules in the growth medium of stationary-phase cells, and farnesol has a strong but incomplete role in this process. We used DNA microarray technology to study both the resumption of growth of Candida albicans cells and molecular regulation involving farnesol. Maintaining farnesol in the culture medium during the resumption of growth both delays and reduces the induction of hypha-related genes yet triggers expression of genes encoding drug efflux components. The persistence of farnesol also prevents the repression of histone genes during hyphal growth and affects the expression of putative or demonstrated morphogenesis-regulating cyclin genes, such as HGC1, CLN3, and PCL2. The results suggest a model explaining the triggering of hyphae in the host based on quorum-sensing molecules.
Publication date
LanguageEnglish
AffiliationNRC Biotechnology Research Institute; National Research Council Canada
Peer reviewedNo
NRC number47468
NPARC number3539046
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Record identifier1c3b0ea5-f64c-4ad8-b85b-c4b0a76c197f
Record created2009-03-01
Record modified2016-05-09
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