Cited by 255Dermatology and Skin DiseasesNail Diseases and TreatmentsPsoriasis: Treatment and Pathogenesis

The Skin Commensal Yeast Malassezia Triggers a Type 17 Response that Coordinates Anti-fungal Immunity and Exacerbates Skin Inflammation

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Sparber, Florian, De Gregorio, Corinne, Steckholzer, Simone, Ferreira, Filipa M., Dolowschiak, Tamas, Ruchti, Fiorella, Kirchner, Florian R., Mertens, Sarah +6 more·2019·Cell Host & Microbe

Abstract

Commensal fungi of the mammalian skin, such as those of the genus Malassezia, are associated with atopic dermatitis and other common inflammatory skin disorders. Understanding of the causative relationship between fungal commensalism and disease manifestation remains incomplete. By developing a murine epicutaneous infection model, we found Malassezia spp. selectively induce IL-17 and related cytokines. This response is key in preventing fungal overgrowth on the skin, as disruption of the IL-23-IL-17 axis compromises Malassezia-specific cutaneous immunity. Under conditions of impaired skin integrity, mimicking a hallmark of atopic dermatitis, the presence of Malassezia dramatically aggravates cutaneous inflammation, which again was IL-23 and IL-17 dependent. Consistently, we found a CCR6+ Th17 subset of memory T cells to be Malassezia specific in both healthy individuals and atopic dermatitis patients, whereby the latter showed enhanced frequency of these cells. Thus, the Malassezia-induced type 17 response is pivotal in orchestrating antifungal immunity and in actively promoting skin inflammation.

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Crossref · 10.1016/j.chom.2019.02.002

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Authors
Sparber, F., De Gregorio, C., Steckholzer, S., Ferreira, F. M., Dolowschiak, T., Ruchti, F., Kirchner, F. R., Mertens, S., Prinz, I., Joller, N., Buch, T., Glatz, M., Sallusto, F., & LeibundGut-Landmann, S.
Affiliations
  • University of Zurich (CH)
  • Medizinische Hochschule Hannover (DE)
  • University Hospital Zurich (CH)
  • ETH Zurich (CH)
Venue
Cell Host & Microbe
Publisher
Elsevier BV
Published
2019-03
Volume
25
Issue
3
Pages
389-403.e6
ISSN
1931-3128 (ISSN-L)
OpenAlex
W2922478983
Cited by
255
References
84
Citations by year
2026: 28 · 2025: 46 · 2024: 44 · 2023: 36 · 2022: 27 · 2021: 20 · 2020: 39 · 2019: 14
FWCI
25.23
Type
journal article
Language
en
Open access
Locations
  • Cell Host & Microbe (publishedVersion)
  • PubMed (publishedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (acceptedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (submittedVersion)
  • Zurich Open Repository and Archive (University of Zurich)
Funders
  • University of Zürich
  • European Research Council (323183, 677200)
  • Helmut Horten Foundation
  • Forschungskredit of the University of Zurich (FK-17-044)
  • Swiss National Science Foundation (PP00P3_150663)
  • Swiss Multiple Sclerosis Society
  • Hertie Foundation (P1150013)
Topics
  • Health Sciences › Medicine › Dermatology › Dermatology and Skin Diseases
  • Health Sciences › Medicine › Epidemiology › Nail Diseases and Treatments
  • Life Sciences › Immunology and Microbiology › Immunology › Psoriasis: Treatment and Pathogenesis
Keywords
Malassezia, commensal fungi, atopic dermatitis, IL-17, IL-23, Th17 cells, CCR6, antifungal immunity, skin inflammation, skin barrier integrity, skin immunity
MeSH terms
Adult, Animals, Dermatitis, Atopic, Dermatomycoses, Disease Models, Animal, Female, Humans, Malassezia, Male, Mice, Inbred C57BL, Middle Aged, Cytokines, Young Adult, Th17 Cells

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