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논문 기본 정보

자료유형
학술저널
저자정보
엄지영 (강남성심병원 피부과) 김한비 (강남성심병원 피부과) 강석영 (한림대학교부속강남성심병원) 손지희 (한림대학교부속강남성심병원) 정보영 (한림대학교 의과대학) 박천욱 (한림대학교) 김혜원 (한림대학교)
저널정보
대한피부과학회 Annals of Dermatology Annals of Dermatology 제32권 제5호
발행연도
2020.1
수록면
360 - 369 (10page)

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Background: Aryl hydrocarbon receptor (AhR), a ligand-activated transcription factor, is important for xenobiotic metabolism and binds to various endogenous and exogenous ligands in the skin. However, the functional role of AhR in patients with psoriasis (PS) and atopic dermatitis (AD) remains unclear. Objective: We aimed to determine whether AhR-regulated factors (AhR, CYP1A1, interleukin [IL]-17, IL-22) were affected by AhR ligands (2,3,7,8-tetrachlorodibenzo-p-dioxin, TCDD) in chronic inflammatory skin diseases such as PS and AD. Methods: The expression levels of AhR-related factors were determined by quantitative PCR, western blotting, and immunocytochemistry. Specific siRNA targeting AhR was used to inhibit gene expression in human peripheral blood mononuclear cells (PBMC). Cytokine assays were performed to determine the protein production of CD4+ T cells. Results: In comparison with healthy controls, TCDD-treated PBMCs and CD4+ T cells from patients with PS and AD showed an increase in AhR gene levels as well as significantly increased expression of AhR-related factors (such as AhR, CYP1A1, IL-17, and IL-22). In contrast, 6-formyl indolo [3,2-b] carbazole (FICZ) inversely affected the differentiation of CD4+ T cells and their cytokine expression levels as compared with TCDD. CD4+ T cells from patients with AD and PS showed higher expression levels of AhR, CYP1A1, IL-17, and IL-22. Conclusion: Our results suggest that TCDD-induced AhR-related factor upregulation in AD and PS patients may increase the expression of AhR-regulatory genes, thereby contributing to the development of AD and PS.

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