Abstract
This protocol describes the setup, maintenance and characteristics of models of epithelial Candida infections based on well-established three-dimensional organotypic tissues of human oral and vaginal mucosa. Infection experiments are highly reproducible and can be used for the direct analysis of pathogen–epithelial cell interactions. This allows detailed investigations of Candida albicans wild type or mutant strain interaction with epithelial tissue or the evaluation of the host immune response using histological, biochemical and molecular methods. As such, the models can be utilized as a tool to investigate cellular interactions or protein and gene expression that are not complicated by non-epithelial factors. To study the impact of innate immunity or the antifungal activity of natural and non-natural compounds, the mucosal infection models can be supplemented with immune cells, antimicrobial agents or probiotic bacteria. The model requires at least 3 days to be established and can be maintained thereafter for 2–4 days.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 12 print issues and online access
$259.00 per year
only $21.58 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Godaly, G. et al. Neutrophil recruitment, chemokine receptors, and resistance to mucosal infection. J. Leukoc. Biol. 69, 899–906 (2001).
Backhed, F. & Hornef, M. Toll-like receptor 4-mediated signaling by epithelial surfaces: necessity or threat? Microbes Infect. 5, 951–959 (2003).
Tjabringa, G.S. et al. Host defense effector molecules in mucosal secretions. FEMS Immunol. Med. Microbiol. 45, 151–158 (2005).
Dieterich, C. et al. In vitro reconstructed human epithelia reveal contributions of Candida albicans EFG1 and CPH1 to adhesion and invasion. Microbiology 148, 497–506 (2002).
Dongari-Bagtzoglou, A. & Kashleva, H. Development of a novel three-dimensional in vitro model of oral Candida infection. Microb. Pathog. 40, 271–278 (2006).
Okeke, C.N. et al. Reverse transcription–3′ rapid amplification of cDNA ends-nested PCR of ACT1 and SAP2 mRNA as a means of detecting viable Candida albicans in an in vitro cutaneous candidiasis model. J. Invest. Dermatol. 114, 95–100 (2000).
Schaller, M., Schafer, W., Korting, H.C. & Hube, B. Differential expression of secreted aspartyl proteinases in a model of human oral candidosis and in patient samples from the oral cavity. Mol. Microbiol. 29, 605–615 (1998).
Schaller, M. et al. Secreted aspartic proteinase (Sap) activity contributes to tissue damage in a model of human oral candidosis. Mol. Microbiol. 34, 169–180 (1999).
Schaller, M. et al. The secreted aspartyl proteinases Sap1 and Sap2 cause tissue damage in an in vitro model of vaginal candidiasis based on reconstituted human vaginal epithelium. Infect. Immun. 71, 3227–3234 (2003).
Korting, H.C. et al. Effects of the human immunodeficiency virus (HIV) proteinase inhibitors saquinavir and indinavir on in vitro activities of secreted aspartyl proteinases of Candida albicans isolates from HIV-infected patients. Antimicrob. Agents Chemother. 43, 2038–2042 (1999).
Heymann, P. et al. The siderophore iron transporter of Candida albicans (Sit1p/Arn1p) mediates uptake of ferrichrome-type siderophores and is required for epithelial invasion. Infect. Immun. 70, 5246–5255 (2002).
Zhao, X. et al. ALS3 and ALS8 represent a single locus that encodes a Candida albicans adhesin; functional comparisons between Als3p and Als1p. Microbiology 150, 2415–2428 (2004).
Zhao, X., Oh, S.H., Yeater, K.M. & Hoyer, L.L. Analysis of the Candida albicans Als2p and Als4p adhesins suggests the potential for compensatory function within the Als family. Microbiology 151, 1619–1630 (2005).
Green, C.B. et al. RT–PCR detection of Candida albicans ALS gene expression in the reconstituted human epithelium (RHE) model of oral candidiasis and in model biofilms. Microbiology 150, 267–275 (2004).
Li, D., Bernhardt, J. & Calderone, R. Temporal expression of the Candida albicans genes CHK1 and CSSK1, adherence, and morphogenesis in a model of reconstituted human esophageal epithelial candidiasis. Infect. Immun. 70, 1558–1565 (2002).
Albrecht, A. et al. Glycosylphosphatidylinositol-anchored proteases of Candida albicans target proteins necessary for both cellular processes and host-pathogen interactions. J. Biol. Chem. 281, 688–694 (2006).
Klengel, T. et al. Fungal adenylyl cyclase integrates CO2sensing with cAMP signaling and virulence. Curr. Biol. 15, 2021–2026 (2005).
Schaller, M. et al. Infection of human oral epithelia with Candida species induces cytokine expression correlated to the degree of virulence. J. Invest. Dermatol. 118, 652–657 (2002).
Schaller, M., Korting, H.C., Borelli, C., Hamm, G. & Hube, B. Candida albicans-secreted aspartic proteinases modify the epithelial cytokine response in an in vitro model of vaginal candidiasis. Infect. Immun. 73, 2758–2765 (2005).
Schaller, M. et al. Polymorphonuclear leukocytes (PMNs) induce protective Th1-type cytokine epithelial responses in an in vitro model of oral candidosis. Microbiology 150, 2807–2813 (2004).
Korting, H.C. et al. Reduced expression of the hyphal-independent Candida albicans proteinase genes SAP1 and SAP3 in the efg1 mutant is associated with attenuated virulence during infection of oral epithelium. J. Med. Microbiol. 52, 623–632 (2003).
Rouabhia, M. et al. Virulence of the fungal pathogen Candida albicans requires the five isoforms of protein mannosyltransferases. Infect. Immun. 73, 4571–4580 (2005).
Schaller, M., Mailhammer, R. & Korting, H.C. Cytokine expression induced by Candida albicans in a model of cutaneous candidosis based on reconstituted human epidermis. J. Med. Microbiol. 51, 672–676 (2002).
Amarzguioui, M. et al. Rational design and in vitro and in vivo delivery of Dicer substrate siRNA. Nature Protocols 1, 508–561 (2006).
Gillum, A.M., Tsay, E.Y. & Kirsch, D.R. Isolation of the Candida albicans gene for orotidine-5′-phosphate decarboxylase by complementation of S. cerevisiae ura3 and E. coli pyrF mutations. Mol. Gen. Genet. 198, 179–182 (1984).
Acknowledgements
We thank all the previous undergraduate and graduate students who have completed a project or a thesis in the laboratory and helped to build the foundations of these protocols. We thank Birgit Fehrenbacher, Renate Nordin, Helga Möller and Hannelore Bischof, University of Tuebingen, for excellent technical assistance and Gudrun Holland and Muhsin Özel, Robert Koch-Institute, for providing Figure 3. M.S. and G.W. were supported by the Deutsche Forschungsgemeinschaft (Sch 897/1; Sch 897/3), B.H. by the Robert Koch-Institute, the Deutsche Forschungsgemeinschaft (Hu 528/8; Hu 528/10) and the European Commission Union (QLK2-2000-00795; “Galar Fungail consortium”) and M.S. and J.N. by NIH grant R01 DE017514-01 and J.N. by a personal Wellcome Trust Value in People (VIP) award.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Schaller, M., Zakikhany, K., Naglik, J. et al. Models of oral and vaginal candidiasis based on in vitro reconstituted human epithelia. Nat Protoc 1, 2767–2773 (2006). https://doi.org/10.1038/nprot.2006.474
Published:
Issue Date:
DOI: https://doi.org/10.1038/nprot.2006.474
This article is cited by
-
Active neutrophil responses counteract Candida albicans burn wound infection of ex vivo human skin explants
Scientific Reports (2020)
-
Proteolytic Degradation of reduced Human Beta Defensin 1 generates a Novel Antibiotic Octapeptide
Scientific Reports (2019)
-
Biofilm-stimulated epithelium modulates the inflammatory responses in co-cultured immune cells
Scientific Reports (2019)
-
Hsf1 and Hsp90 orchestrate temperature-dependent global transcriptional remodelling and chromatin architecture in Candida albicans
Nature Communications (2016)
-
New “haploid biofilm model” unravels IRA2 as a novel regulator of Candida albicans biofilm formation
Scientific Reports (2015)
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.