Cited by 27Adrenal Hormones and DisordersDermatology and Skin DiseasesEstrogen and related hormone effects

Regulation of tissue immune responses by local glucocorticoids at epithelial barriers and their impact on interorgan crosstalk

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Merk, Verena M., Phan, Truong San, Brunner, Thomas·2021·Frontiers in Immunology

Abstract

The anti-inflammatory role of extra-adrenal glucocorticoid (GC) synthesis at epithelial barriers is of increasing interest with regard to the search for alternatives to synthetic corticosteroids in the therapy of inflammatory disorders. Despite being very effective in many situations the use of synthetic corticosteroids is often controversial, as exemplified in the treatment of influenza patients and only recently in the current COVID-19 pandemic. Exploring the regulatory capacity of locally produced GCs in balancing immune responses in barrier tissues and in pathogenic disorders that lead to symptoms in multiple organs, could provide new perspectives for drug development. Intestine, skin and lung represent the first contact zones between potentially harmful pathogens or substances and the body, and are therefore important sites of immunoregulatory mechanisms. Here, we review the role of locally produced GCs in the regulation of type 2 immune responses, like asthma, atopic dermatitis and ulcerative colitis, as well as type 1 and type 3 infectious, inflammatory and autoimmune diseases, like influenza infection, psoriasis and Crohn's disease. In particular, we focus on the role of locally produced GCs in the interorgan communication, referred to as gut-skin axis, gut-lung axis or lung-skin axis, all of which are interconnected in the pathogenic crosstalk atopic march.

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  • Extra-adrenal glucocorticoid production occurs in the gut and other tissues, and these glucocorticoids regulate local homeostasis, cell development, and immune activation.

    “Extra-adrenal glucocorticoid production is known to occur in the gut and other tissues, and these glucocorticoids play a highly specific role in regulating local homeostasis, cell development, and immune activation (522–526).”

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  1. [10]Slominski A Wortsman J Paus R Elias PM Tobin DJ Feingold KR. Skin as an Endocrine Organ: Implication for its Function. Drug Discovery Today Dis Mech (2008) 5: 137–44. 10.1016/j.ddmec.2008.04.004.Skin PMC2658605 19492070 · DOI
  2. [57]Slominski A Zbytek B Nikolakis G Manna PR Skobowiat C Zmijewski M. Steroidogenesis in the Skin: Implications for Local Immune Functions. J Steroid Biochem Mol Biol (2013) 137: 107–23. 10.1016/j.jsbmb.2013.02.006 PMC3674137 23435015 · DOI · Paper page
  3. [67]Skobowiat C Slominski A. Ultraviolet B (UVB) Activates Hypothalamic-Pituitary-Adrenal (HPA) Axis in C57BL/6 Mice. J Invest Derm (2015) 135: 1638–48. 10.1016/j.chemosphere.2012.12.037.Reactivity PMC4398592 25317845 · DOI

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Authors
Merk, V. M., Phan, T. S., & Brunner, T.
Affiliations
University of Konstanz (DE)
Corresponding author
Brunner, Thomas
Venue
Frontiers in Immunology
Published
2021-05-03
Volume
12
Pages
672808-672808
ISSN
1664-3224 (ISSN-L)
OpenAlex
W3159275666
Cited by
27
References
99
Citations by year
2026: 3 · 2025: 3 · 2024: 2 · 2023: 9 · 2022: 7 · 2021: 2 · 2012: 1
FWCI
0.77
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Immunology (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • KOPS (University of Konstanz) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Deutsche Forschungsgemeinschaft
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
  • Health Sciences › Medicine › Dermatology › Dermatology and Skin Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
Keywords
epithelial barrier function, organ crosstalk, Th2 immune response, type 1 immune response, type 3 immunity, asthma, atopic dermatitis, ulcerative colitis, influenza, psoriasis, Crohn's disease, gut-skin axis, gut-lung axis, atopic march, anti-inflammatory drug development, synthetic corticosteroids
MeSH terms
Anti-Inflammatory Agents, Autoimmune Diseases, Dermatitis, Atopic, Epithelium, Glucocorticoids, Humans, Inflammation, Intestinal Mucosa, Lung, Skin

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