Candida albicans mycofilms support Staphylococcus aureus colonization and enhances miconazole resistance in dual-species interactions

Ryan Kean, Ranjith Rajendran, Jennifer Haggarty, Eleanor M. Townsend, Bryn Short, Karl E. Burgess, Sue Lang, Owain Millington, William G. Mackay, Craig Williams, Gordon Ramage

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Polymicrobial inter-kingdom biofilm infections represent a clinical management conundrum. The presence of co-isolation of bacteria and fungi complicates the ability to routinely administer single antimicrobial regimens, and synergy between the microorganisms influences infection severity. We therefore investigated the nosocomial pathogens Staphylococcus aureus and Candida albicans with respect to antimicrobial intervention. We characterized the interaction using biofilm assays and evaluated the effect of miconazole treatment using in vitro and in vivo assays. Finally, we assessed the impact of biofilm extracellular matrix (ECM) on these interactions. Data indicated that the C. albicans mycofilms supported adhesion and colonization by S. aureus through close interactions with hyphal elements, significantly increasing S. aureus biofilm formation throughout biofilm maturation. Miconazole sensitivity was shown to be reduced in both mono- and dual-species biofilms compared to planktonic cells. Within a three-dimensional biofilm model sensitivity was also hindered. Galleria mellonella survival analysis showed both enhanced pathogenicity of the dual-species infection, which was concomitantly desensitized to miconazole treatment. Analysis of the ECM revealed the importance of extracellular DNA, which supported the adhesion of S. aureus and the development of the dual-species biofilm structures. Collectively, these data highlight the clinical importance of dual-species inter-kingdom biofilm infections, though also provides translational opportunities to manage them more effectively.

LanguageEnglish
Article number258
Pages1-11
Number of pages11
JournalFrontiers in Microbiology
Volume8
DOIs
Publication statusPublished - 23 Feb 2017

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Miconazole
Biofilms
Candida albicans
Staphylococcus aureus
Infection
Extracellular Matrix
Survival Analysis
Virulence
Fungi
Bacteria

Keywords

  • biofilm
  • Candida albicans
  • extracellular DNA
  • miconazole
  • Staphylococcus aureus

Cite this

Kean, Ryan ; Rajendran, Ranjith ; Haggarty, Jennifer ; Townsend, Eleanor M. ; Short, Bryn ; Burgess, Karl E. ; Lang, Sue ; Millington, Owain ; Mackay, William G. ; Williams, Craig ; Ramage, Gordon. / Candida albicans mycofilms support Staphylococcus aureus colonization and enhances miconazole resistance in dual-species interactions. In: Frontiers in Microbiology. 2017 ; Vol. 8. pp. 1-11.
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Kean, R, Rajendran, R, Haggarty, J, Townsend, EM, Short, B, Burgess, KE, Lang, S, Millington, O, Mackay, WG, Williams, C & Ramage, G 2017, 'Candida albicans mycofilms support Staphylococcus aureus colonization and enhances miconazole resistance in dual-species interactions' Frontiers in Microbiology, vol. 8, 258, pp. 1-11. https://doi.org/10.3389/fmicb.2017.00258

Candida albicans mycofilms support Staphylococcus aureus colonization and enhances miconazole resistance in dual-species interactions. / Kean, Ryan; Rajendran, Ranjith; Haggarty, Jennifer; Townsend, Eleanor M.; Short, Bryn; Burgess, Karl E.; Lang, Sue; Millington, Owain; Mackay, William G.; Williams, Craig; Ramage, Gordon.

In: Frontiers in Microbiology, Vol. 8, 258, 23.02.2017, p. 1-11.

Research output: Contribution to journalArticle

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AU - Kean, Ryan

AU - Rajendran, Ranjith

AU - Haggarty, Jennifer

AU - Townsend, Eleanor M.

AU - Short, Bryn

AU - Burgess, Karl E.

AU - Lang, Sue

AU - Millington, Owain

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AU - Williams, Craig

AU - Ramage, Gordon

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