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Interferon-Lambda 1 Inhibits Staphylococcus aureus Colonization in Human Primary Keratinocytes.


ABSTRACT: Atopic dermatitis (AD) is a common inflammatory skin disease. Staphylococcus aureus (S. aureus) colonization in skin lesions occurs in approximately 70% of AD patients. It has been found that IFN-λ1 can inhibit the colonization of S. aureus in normal human nasal mucosa. IFN-λ1 can increase IL-28RA in infected human keratinocytes. In this study, we found that IFN-λ1 can increase mRNA expression of FLG and antimicrobial peptides (AMPs) and inhibit TSLP mRNA expression in infected human keratinocytes. IFN-λ1 can increase intracellular ROS level, decrease STAT1 phosphorylation, and inhibit the colonization of S. aureus in human primary keratinocytes. These effects were attenuated by knocking-down IL-28R and NADPH oxidase inhibitor, suggesting that this function was mediated by JAK-STAT1 signaling pathway. These results suggest that IFN-λ1 might have an inhibitory effect on S. aureus colonization in AD lesions. Our findings might have potential value in the treatment for AD.

SUBMITTER: Wu X 

PROVIDER: S-EPMC8019897 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature

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Interferon-Lambda 1 Inhibits <i>Staphylococcus aureus</i> Colonization in Human Primary Keratinocytes.

Wu Xia X   Zhao Yan Y   Gu Ying Y   Li Kun K   Wang Xiaojie X   Zhang Jianzhong J  

Frontiers in pharmacology 20210322


Atopic dermatitis (AD) is a common inflammatory skin disease. <i>Staphylococcus aureus</i> (<i>S. aureus</i>) colonization in skin lesions occurs in approximately 70% of AD patients. It has been found that IFN-λ1 can inhibit the colonization of <i>S. aureus</i> in normal human nasal mucosa. IFN-λ1 can increase IL-28RA in infected human keratinocytes. In this study, we found that IFN-λ1 can increase mRNA expression of FLG and antimicrobial peptides (AMPs) and inhibit TSLP mRNA expression in infec  ...[more]

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