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Naringenin ameliorates atopic dermatitis by inhibiting inflammation and enhancing immunity through the JAK2/STAT3 pathway

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Abstract

Objective

Atopic dermatitis (AD) is an inflammatory skin disease. Naringenin (Nar) possesses an anti-inflammatory property. This paper attempts to discuss the functional mechanism of Nar in AD mice through the Janus kinase 2 (JAK2)/signal transducer and activation of transcription 3 (STAT3) pathway.

Methods

Mouse models of DNFB-induced AD were established and treated with Nar, followed by intraperitoneal injection with the JAK2/STAT3 pathway activator Coumermycin A1. Dermatitis severity was scored and the thickness of right ear was measured. The pathological changes in dorsal skin tissues were observed by HE staining. The number of infiltrated mast cells and eosinophilic granulocytes was counted by TB staining. The serum IgE level and levels of TNF-α, IL-6, IFN-γ, IL-12, and IL-5 in dorsal skin tissues were measured by ELISA. The levels of p-JAK2, JAK2, p-STAT3, and STAT3 were determined by Western blot.

Results

Nar decreased dermatitis scores and right ear thickness, alleviated skin lesions, and reduced the number of infiltrated mast cells and eosinophilic granulocytes in AD mice. The serum IgE level and levels of TNF-α, IL-6, IFN-γ, IL-12, and IL-5 in dorsal skin tissues of AD mice were diminished after Nar treatment in a dose-dependent manner. Nar inhibited the activation of the JAK2/STAT3 pathway. The activation of the JAK2/STAT3 pathway partially nullified the therapeutic function of Nar on AD mice.

Conclusion

Nar protects mice from AD by inhibiting inflammation and promoting immune responses through the inhibition of the JAK2/STAT3 pathway.

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All data generated or analysed during this study are included in this article. Further enquiries can be directed to the corresponding author.

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Authors and Affiliations

Authors

Contributions

LT and MW contributed to the study concepts, study design; YW, LT contributed to the literature research; MW, LT, YW contributed to the experimental studies and data acquisition; LT, MW, WL, YY contributed to the data analysis and statistical analysis; LT, MW contributed to the manuscript preparation and YY contributed to the manuscript editing and review; All authors read and approved the final manuscript.

Corresponding author

Correspondence to Yuenan Yang.

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Ethics statement

The animal-related experimental procedures were in line with the protocols approved by the Animal Ethics Committee of First Affiliated Hospital of Baotou Medical College of Inner Mongolia University of Science and Technology. The number of drop-out animals was zero until the day of final experiments.

Competing interests

The authors report no conflicts of interest.

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Limin Tian and Mengjie Wang contributed equally to this work.

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Tian, L., Wang, M., Wang, Y. et al. Naringenin ameliorates atopic dermatitis by inhibiting inflammation and enhancing immunity through the JAK2/STAT3 pathway. Genes Genom 46, 333–340 (2024). https://doi.org/10.1007/s13258-023-01457-8

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  • DOI: https://doi.org/10.1007/s13258-023-01457-8

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