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Transcriptional landscape of trans-kingdom communication between Candida albicans and Streptococcus gordonii

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  • Lindsay C Dutton
  • Konrad H Paszkiewicz
  • Richard J Silverman
  • Peter R Splatt
  • Sophie Shaw
  • Angela H Nobbs
  • Richard J Lamont
  • Howard F Jenkinson
  • Mark Ramsdale
Original languageEnglish
JournalMolecular Oral Microbiology
DatePublished - 4 Jun 2015


Recent studies have shown that the transcriptional landscape of the pleiomorphic fungus Candida albicans is highly dependent upon growth conditions. Here using a dual RNA-seq approach we identified 299 C. albicans and 72 Streptococcus gordonii genes that were either up- or down-regulated specifically as a result of co-culturing these human oral cavity microorganisms. Seventy five C. albicans genes involved in responses to chemical stimuli, regulation, homeostasis, protein modification and cell cycle were statistically (P ≤0.05) up-regulated, while 36 genes mainly involved in transport and translation were down-regulated. Up-regulation of filamentation-associated TEC1 and FGR42 genes, and of ALS1 adhesin gene, concurred with previous evidence that the C. albicans yeast to hypha transition is promoted by S. gordonii. Increased expression of genes required for arginine biosynthesis in C. albicans was potentially indicative of a novel oxidative stress response. The transcriptional response of S. gordonii to C. albicans was less dramatic, with only eight S. gordonii genes significantly (P ≤0.05) up-regulated ≥ twofold (glpK, rplO, celB, rplN, rplB, rpsE, ciaR, and gat). The expression patterns suggest that signals from S. gordonii cause a positive filamentation response in C. albicans, while S. gordonii appears to be transcriptionally less influenced by C. albicans. This article is protected by copyright. All rights reserved.

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