Atopic dermatitis: immune deviation, barrier dysfunction, IgE autoreactivity and new therapies

作者：Furue Masutaka; Chiba Takahito; Tsuji Gaku; Ulzii Dugarmaa; Kido Nakahara Makiko; Nakahara Takeshi; Kadono Takafumi

来源：Allergology International, 2017, 66(3): 398-403.

DOI：10.1016/j.alit.2016.12.002

• Atopic dermatitis
• Filaggrin
• IgE autoreactivity
• Th2
• Th22

Atopic dermatitis (AD) is a chronic or chronically relapsing, eczematous, severely pruritic skin disorder mostly associated with IgE elevation and skin barrier dysfunction due to decreased filaggrin expression. The lesional skin of AD exhibits Th2- and Th22-deviated immune reactions that are progressive during disease chronicity. Th2 and Th22 cytokines further deteriorate the skin barrier by inhibiting filaggrin expression. Some IgEs are reactive to self-antigens. The IgE autoreactivity may precipitate the chronicity of AD. Upon activation of the ORAI1 calcium channel, atopic epidermis releases large amounts of thymic stromal lymphopoietin (TSLP), which initiates the Th2 and Th22 immune response. Th2-derived interleukin-31 and TSLP induce an itch sensation. Taken together, TSLP/Th2/Th22 pathway is a promising target for developing new therapeutics for AD. Enhancing filaggrin expression using ligands for the aryl hydrocarbon receptor may also be an adjunctive measure to restore the disrupted barrier function specifically for AD.

• 出版日期2017-7