IL-32 promotes the occurrence of atopic dermatitis by activating the JAK1/microRNA-155 axis.

Jing Chang, Bin Zhou, Zhu Wei, Yongqi Luo

Journal of translational medicine 2022 May 11

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This study aims to explore the mechanism of interleukin-32 (IL-32) affecting atopic dermatitis (AD) through the Janus-activated kinase-1 (JAK1)/microRNA-155 (miR-155) axis. In this study, skin tissue samples and blood samples from normal subjects and patients with AD, human immortalized keratinocytes (HaCaT), and PA-induced mouse models of AD were selected for expression determination of IL-32, JAK1 and miR-155. The interaction among IL-32, JAK1 and miR-155 was identified with their roles in AD analyzed through loss- and gain-of-function assays. Elevated IL-32 was detected in AD tissues and blood samples and promoted the occurrence of AD. IL-32 upregulated JAK1 expression and phosphorylation of its downstream genes, thus activating the JAK signaling pathway. JAK1 promoted the expression of miR-155. IL-32/JAK1/miR-155 axis promoted inflammation in the AD skin reconstruction model. In vivo experiments further confirmed that IL-32 promoted AD development by activating the JAK1/miR-155 axis. The present study underlined that IL-32 promoted the occurrence of AD by promoting JAK1 expression to upregulate miR-155 expression. © 2022. The Author(s).

Citation

Jing Chang, Bin Zhou, Zhu Wei, Yongqi Luo. IL-32 promotes the occurrence of atopic dermatitis by activating the JAK1/microRNA-155 axis. Journal of translational medicine. 2022 May 11;20(1):207