Abstract
Backgrounds: Atopic dermatitis (AD) is a chronic, inflammatory, and relapsing skin disorder that occurs due to a Th1/Th2 cytokine imbalance and an elevation of immunoglobulin E (IgE) levels. We investigated whether chlorin e6 (Ce6)-mediated photodynamic therapy (PDT), which is commonly used for the clinical treatment of several cancers and non-neoplastic skin disorders, has a therapeutic effect on AD.
Methods: β-hexosaminidase assay was performed in RBL-2H3 stimulated by DNP-BSA. Total IgE levels and serum cytokine levels were analyzed by ELISA assay. Eosinophils and mast cells were analyzed by hematoxylin- eosin stain and toluidine blue stain on ear of AD mouse model.
Results: Ce6-mediated PDT significantly reduced the secretion of β-hexosaminidase in DNP-BSA-stimulated RBL-2H3 cells. In a DNCB-induced AD-like mouse model, serum IFN-γ was found to be elevated in conjunction with reduced IL-4 following Ce6-mediated PDT. The DNCB-induced serum IgE level was also reduced following Ce6-mediated PDT. In addition, DNCB-induced infiltration of eosinophils and mast cells was decreased by Ce6-mediated PDT in the mouse ear.
Conclusion: Ce6-mediated PDT might be used as a potent therapeutics for AD via restoring Th1/Th2 balance and reducing over expressed immune cells.
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This work was supported by Soonchunhyang University.
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A-Reum Ryu & Mi-Young Lee declare that they have no conflicts of interest.
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The experimental procedure followed the actual law of animal protection that was approved by the Institutional Animal Care and Use Committee of Soonchunhyang University, Korea.
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A-Reum carried out the experiment and Mi-Young Lee supervised the project. All authors discussed the results and contributed to the final manuscript.
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Ryu, AR., Lee, MY. Ameliorative effect of chlorin e6-mediated photodynamic therapy on DNCB-induced atopic dermatitis-like skin lesions in mice. Mol. Cell. Toxicol. 15, 265–270 (2019). https://doi.org/10.1007/s13273-019-0030-z
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DOI: https://doi.org/10.1007/s13273-019-0030-z