Cited by 3Nail Diseases and TreatmentsIL-33, ST2, and ILC PathwaysDermatology and Skin Diseases

Cutaneous innate lymphoid populations drive IL-17A-mediated immunity in Nannizzia gypsea dermatophytosis

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Beccacece, Ignacio, Burstein, Verónica Liliana, Almeida, Mariel Abigail, Gareca, Julio Cesar, Guasconi, Lorena, Mena, Cristian Javier, Mary, Verónica Sofia, Theumer, Martín Gustavo +5 more·2025·Journal of Investigative Dermatology

Abstract

Fungal skin infections significantly contribute to the global human disease burden, yet our understanding of cutaneous immunity against dermatophytes remains limited. Previously, we developed a model of epicutaneous infection with Microsporum canis in C57BL/6 mice, which highlighted the critical role of IL-17RA signaling in antidermatophyte defenses. In this study, we expanded our investigation to the human pathogen Nannizzia gypsea and demonstrated that skin γδTCR int and CD8/CD4 double-negative βTCR+ T cells are the principal producers of IL-17A during dermatophytosis. These IL-17A+ T cells exhibited an activated/memory phenotype, including a subset of proliferating tissue-resident cells. Notably, restriction of lymphocyte trafficking after fingolimod administration in infected mice did not lead to increased susceptibility, indicating that local antifungal defenses are independent of T-cell priming in lymph nodes. In addition, Rag1-/- mice lacking T and B lymphocytes effectively controlled infection and exhibited increased IL-17A production by innate lymphoid cells. Furthermore, Rag2-/-Il2rg-/- mice, devoid of T, B, and innate lymphoid cells, were highly susceptible to dermatophytosis compared with Rag2-/-or wild-type mice, demonstrating that innate lymphoid cells are sufficient to antifungal defenses in T-cell-deficient mice. In conclusion, our study underscores the coordinated interplay between skin γδT, αβT, and innate lymphoid cell subsets in controlling primary N gypsea dermatophytosis.

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  • ILCs contribute to effective host defense against mucocutaneous fungal challenge.

    “ILCs contribute to effective host defense against mucocutaneous fungal challenge [92,93].”

    From Host–Candida auris interactions in the skin (2026) · cites this paper as [93]

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  1. Conti HR, Shen F, Nayyar N, Stocum E, Sun JN, Lindemann MJ, Th17 cells and IL-17 receptor signaling are essential for mucosal host defense against oral candidiasis. Journal of Experimental Medicine. 2009b; 206(2): 299– 311 19204111 PMC2646568
  2. Huang X, Hurabielle C, Drummond RA, Bouladoux N, Desai JV, Sim CK, Murine model of colonization with fungal pathogen Candida auris to explore skin tropism, host risk factors and therapeutic strategies. Cell Host & Microbe. 2021b; 29(2): 210– 221. e6 33385336 PMC7878403
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  4. Iwasawa MT, Miyachi H, Wakabayashi S, Sugihira T, Aoyama R, Nakagawa S, Epidermal clearance of Candida albicans is mediated by IL-17 but independent of fungal innate immune receptors. International Immunology. 2022b; 34(8): 409– 20 35641096 PMC9317997
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Authors
Beccacece, I., Burstein, V. L., Almeida, M. A., Gareca, J. C., Guasconi, L., Mena, C. J., Mary, V. S., Theumer, M. G., Cervi, L., Prinz, I., Gruppi, A., Lionakis, M. S., & Chiapello, L. S.
Affiliations
  • Consejo Nacional de Investigaciones Científicas y Técnicas (AR)
  • University Medical Center Hamburg-Eppendorf (DE)
  • National Institutes of Health (US)
Corresponding author
Chiapello, Laura Silvina
Venue
Journal of Investigative Dermatology
Publisher
Elsevier BV
Published
2025-07
Volume
145
Issue
7
Pages
1706-1716.e4
ISSN
0022-202X (ISSN-L)
OpenAlex
W4405694609
Cited by
3
References
49
Citations by year
2026: 2 · 2025: 1
FWCI
0.92
Type
journal article
Language
en
Open access
Locations
  • Journal of Investigative Dermatology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (publishedVersion)
  • Conicet (publishedVersion, cc-by-nc-sa)
Funders
  • Agencia Nacional De Promoción Científica Y Tecnológica
  • CONICET
  • NIAID (ZIA AI001175)
  • Fulbright US Scholar Program
  • Universidad Nacional de Córdoba
  • Division of Intramural Research
  • Secretaría de Ciencia y Técnica, Universidad Nacional de Río Cuarto
  • National Institutes of Health
  • Universidad Nacional de Cordoba Secretaria de Ciencia y Tecnologia
  • International Union of Biochemistry and Molecular Biology
  • Fondo para la Investigación Científica y Tecnológica (PICT 2018-01349, PICT 2021-00483)
Topics
  • Health Sciences › Medicine › Epidemiology › Nail Diseases and Treatments
  • Life Sciences › Immunology and Microbiology › Immunology › IL-33, ST2, and ILC Pathways
  • Health Sciences › Medicine › Dermatology › Dermatology and Skin Diseases
Keywords
Microsporum gypseum, dermatophytosis, IL-17A, innate lymphoid cells, γδ T cells, double-negative T cells, antifungal immunity, Rag1-deficient mice, Rag2-deficient mice, fingolimod, lymphocyte migration, tissue-resident memory T cells, fungal skin infection
MeSH terms
Animals, Arthrodermataceae, Disease Models, Animal, Humans, Immunity, Innate, Mice, Inbred C57BL, Skin, Tinea, Receptors, Antigen, T-Cell, gamma-delta, Mice, Knockout, Interleukin-17, Mice

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