Cited by 68Psoriasis: Treatment and PathogenesisDermatology and Skin DiseasesCytokine Signaling Pathways and Interactions

Role of IL-22 in homeostasis and diseases of the skin

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Lopez, Daniel Villalba, Kongsbak‐Wismann, Martin·2022·Apmis

Abstract

Interleukin-22 (IL-22) is a cytokine mainly produced by T cells and innate lymphoid cells (ILC). IL-22 primarily targets non-hematopoietic cells such as epithelial cells and fibroblasts. In the skin, IL-22 promotes the proliferation of keratinocytes and dermal fibroblasts. IL-22 furthermore regulates innate immune responses as it induces the production of antimicrobial proteins and neutrophil-attracting chemokines. IL-22 plays an important role in wound healing and in the protection against skin infections. However, IL-22 can also contribute to the pathogenesis of several inflammatory skin diseases such as psoriasis, atopic dermatitis and allergic contact dermatitis. In this review, current information regarding the structure, function and regulation of IL-22 is discussed with a special focus on the role of IL-22 in the skin and in skin diseases.

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  • Neutrophils migrate into the epidermis in response to keratinocyte-derived chemokines, forming characteristic microabscesses (Munro abscesses) and contributing to inflammation through proteases, reactive oxygen species, and extracellular traps, which stimulate innate immune pathways.

    “Neutrophils migrate into the epidermis in response to keratinocyte-derived chemokines, forming characteristic microabscesses (Munro abscesses) and contributing to inflammation through proteases, reactive oxygen species, and extracellular traps, which stimulate innate immune pathways [26].”

    From The Cutaneous Immune Microenvironment in Selected Inflammatory Skin Diseases: Linking Histopathology, Mechanisms, and Targeted Therapy (2026) · cites this paper as [26]

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Authors
Lopez, D. V., & Kongsbak‐Wismann, M.
Affiliations
University of Copenhagen (DK)
Corresponding author
Kongsbak‐Wismann, Martin
Venue
Apmis
Publisher
Wiley
Published
2022-04-06
Volume
130
Issue
6
Pages
314-322
ISSN
  • 0903-4641 (ISSN-L)
  • 1600-0463
OpenAlex
W4220899108
Cited by
66
References
62
Citations by year
2026: 10 · 2025: 28 · 2024: 19 · 2023: 8 · 2022: 1
FWCI
1.47
Type
journal article
Language
en
Open access
Locations
  • Apmis (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (publishedVersion, cc-by-nc-nd)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Psoriasis: Treatment and Pathogenesis
  • Health Sciences › Medicine › Dermatology › Dermatology and Skin Diseases
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
Keywords
IL-22, skin homeostasis, skin diseases, keratinocyte proliferation, dermal fibroblasts, epithelial cells, innate immune response, antimicrobial proteins, neutrophil chemokines, wound healing, skin infections, psoriasis, atopic dermatitis, allergic contact dermatitis, T cells, innate lymphoid cells
MeSH terms
Interleukin-22, Homeostasis, Humans, Immunity, Innate, Interleukins, Lymphocytes, Psoriasis, Skin, Skin Diseases, Keratinocytes

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