State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China.
Int J Mol Sci. 2024 Jan 13;25(2):1005. doi: 10.3390/ijms25021005.
Members of the C-X-C motif chemokine receptor (CXCR) superfamily play central roles in initiating the innate immune response in mammalian cells by orchestrating selective cell migration and immune cell activation. With its multilayered structure, the skin, which is the largest organ in the body, performs a crucial defense function, protecting the human body from harmful environmental threats and pathogens. CXCRs contribute to primary immunological defense; these receptors are differentially expressed by different types of skin cells and act as key players in initiating downstream innate immune responses. While the initiation of inflammatory responses by CXCRs is essential for pathogen elimination and tissue healing, overactivation of these receptors can enhance T-cell-mediated autoimmune responses, resulting in excessive inflammation and the development of several skin disorders, including psoriasis, atopic dermatitis, allergic contact dermatitis, vitiligo, autoimmune diseases, and skin cancers. In summary, CXCRs serve as critical links that connect innate immunity and adaptive immunity. In this article, we present the current knowledge about the functions of CXCRs in the homeostasis function of the skin and their contributions to the pathogenesis of allergic contact dermatitis and psoriasis. Furthermore, we will examine the research progress and efficacy of therapeutic approaches that target CXCRs.
C-X-C 基序趋化因子受体 (CXCR) 超家族成员通过协调选择性细胞迁移和免疫细胞激活,在启动哺乳动物细胞固有免疫反应中发挥核心作用。皮肤作为人体最大的器官,具有多层次的结构,执行着至关重要的防御功能,保护人体免受有害的环境威胁和病原体的侵害。CXCR 有助于初级免疫防御;这些受体在不同类型的皮肤细胞中差异表达,并作为启动下游固有免疫反应的关键参与者。虽然 CXCR 引发炎症反应对于消除病原体和组织愈合至关重要,但这些受体的过度激活会增强 T 细胞介导的自身免疫反应,导致过度炎症和多种皮肤疾病的发展,包括银屑病、特应性皮炎、过敏性接触性皮炎、白癜风、自身免疫性疾病和皮肤癌。总之,CXCR 是连接固有免疫和适应性免疫的关键环节。本文介绍了 CXCR 在皮肤稳态功能中的作用及其在过敏性接触性皮炎和银屑病发病机制中的贡献方面的最新知识。此外,我们将研究靶向 CXCR 的治疗方法的研究进展和疗效。