Article (Scientific journals)
Keratinocytes activated by IL-4/IL-13 express IL-2Rγ with consequences on epidermal barrier function
Progneaux, Audrey; Evrard, Céline; De Glas, Valérie et al.
2023In Experimental Dermatology
 

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Keywords :
atopic dermatitis; barrier function; interleukins; keratinocyte biology
Abstract :
Atopic dermatitis (AD) is a Th2-type inflammatory disease characterized by an alteration of epidermal barrier following the release of IL-4 and IL-13. These cytokines activate type II IL-4Rα/IL-13Rα1 receptors in the keratinocyte. Whilst IL-2Rγ, that forms type I receptor for IL-4, is only expressed in haematopoietic cells, recent studies suggest its induction in keratinocytes, which questions about its role. We studied expression of IL-2Rγ in keratinocytes and its role in alteration of keratinocyte function and epidermal barrier. IL-2Rγ expression in keratinocytes was studied using both reconstructed human epidermis (RHE) exposed to IL-4/IL-13 and AD skin. IL-2Rγ induction by type II receptor has been analyzed using JAK inhibitors and RHE knockout (KO) for IL13RA1. IL-2Rγ function was investigated in RHE KO for IL2RG. In RHE, IL-4/IL-13 induce expression of IL-2Rγ at the mRNA and protein levels. Its mRNA expression is also visualized in keratinocytes of lesional AD skin. IL-2Rγ expression is low in RHE treated with JAK inhibitors and absent in RHE KO for IL13RA1. Exposure to IL-4/IL-13 alters epidermal barrier, but this alteration is absent in RHE KO for IL2RG. A more important induction of IL-13Rα2 is reported in RHE KO for IL2RG than in not edited RHE. These results demonstrate IL-2Rγ induction in keratinocytes through activation of type II receptor. IL-2Rγ is involved in the alteration of the epidermal barrier and in the regulation of IL-13Rα2 expression. Observation of IL-2Rγ expression by keratinocytes inside AD lesional skin suggests a role for this receptor subunit in the disease.
Disciplines :
Dermatology
Author, co-author :
Progneaux, Audrey
Evrard, Céline ;  Université de Liège - ULiège > Chimie et bio-industries > Chimie biologique industrielle
De Glas, Valérie
Fontaine, Alix
Dotreppe, Céline
De Vuyst, Evelyne
Nikkels, Arjen ;  Centre Hospitalier Universitaire de Liège - CHU > > Service de dermatologie
Garcia-Gonzalez, Vicente
Dumoutier, Laure
Lambert de Rouvroit, Catherine
Poumay, Yves
Language :
English
Title :
Keratinocytes activated by IL-4/IL-13 express IL-2Rγ with consequences on epidermal barrier function
Publication date :
2023
Journal title :
Experimental Dermatology
ISSN :
0906-6705
eISSN :
1600-0625
Publisher :
Blackwell, Oxford, United Kingdom
Available on ORBi :
since 03 May 2023

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