Cited by 29Antifungal resistance and susceptibilityFungal Infections and StudiesNail Diseases and Treatments

Native human and mouse skin infection models to study Candida auris-host interactions

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Seiser, Saskia, Arzani, Hossein, Ayub, Tanya, Phan-Canh, Trinh, Staud, Clement, Worda, Christof, Kuchler, Karl, Elbe-Bürger, Adelheid·2024·Microbes and Infection

Abstract

The World Health Organization (WHO) declared certain fungal pathogens as global health threats for the next decade. Candida auris (C. auris) is a newly emerging skin-tropic multidrug-resistant fungal pathogen that can cause life-threatening infections of high mortality in hospitals and healthcare settings. Here, we address an unmet need and present novel native ex vivo skin models, thus extending previous C. auris-host interaction studies. We exploit histology and immunofluorescence analysis of ex vivo skin biopsies of human adult and fetal, as well as mouse origin infected with C. auris via distinct routes. We demonstrate that an intact skin barrier efficiently protects from C. auris penetration and invasion. Although C. auris readily grows on native human skin, it can reach deeper layers only upon physical disruption of the barrier by needling or through otherwise damaged skin. By contrast, a barrier disruption is not necessary for C. auris penetration of native mouse skin. Importantly, we show that C. auris undergoes morphogenetic changes upon skin penetration, as it acquires pseudohyphal growth phenotypes in deeper human and mouse dermis. Taken together, this new human and mouse skin model toolset yields new insights into C. auris colonization, adhesion, growth and invasion properties of native versus damaged human skin. The results form a crucial basis for future studies on skin immune defense to colonizing pathogens, and offer new options for testing the action and efficacy of topical antimicrobial compound formulations.

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Crossref · 10.1016/j.micinf.2023.105234

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Authors
Seiser, S., Arzani, H., Ayub, T., Phan-Canh, T., Staud, C., Worda, C., Kuchler, K., & Elbe-Bürger, A.
Affiliations
  • Medical University of Vienna (AT)
  • Max Perutz Labs (AT)
Corresponding author
Kuchler, Karl
Venue
Microbes and Infection
Publisher
Elsevier BV
Published
2024-01
Volume
26
Issue
1-2
Pages
105234
ISSN
1286-4579 (ISSN-L)
OpenAlex
W4387424433
Cited by
29
References
86
Citations by year
2026: 7 · 2025: 10 · 2024: 12
FWCI
6.00
Type
journal article
Language
en
Open access
Locations
  • Microbes and Infection (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • OeAD-GmbH (2022)
  • European Society of Clinical Microbiology and Infectious Diseases
  • Austrian Science Fund (DOC32-B28, P31485-B30)
  • OeAD
Topics
  • Health Sciences › Medicine › Infectious Diseases › Antifungal resistance and susceptibility
  • Health Sciences › Medicine › Epidemiology › Fungal Infections and Studies
  • Health Sciences › Medicine › Epidemiology › Nail Diseases and Treatments
Keywords
Candida auris, skin infection model, skin barrier integrity, pseudohyphal growth, host-pathogen interaction, multidrug-resistant fungi, human skin model
MeSH terms
Candida auris, Adult, Animals, Antifungal Agents, Candida, Candidiasis, Disease Models, Animal, Humans, Mice

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