基因敲除
银屑病
趋化因子
未折叠蛋白反应
内质网
下调和上调
炎症
细胞生物学
白细胞介素17
C-C趋化因子受体6型
发病机制
细胞内
免疫学
角质形成细胞
20立方厘米
化学
生物
癌症研究
细胞培养
趋化因子受体
基因
生物化学
遗传学
作者
Lijun Zhao,Jun Li,Bo Jiang,Jinqiang Yang,Jian Lan,Danqi Li,Jingjing Wen,Xia Yan,Wenjia Nie,Zhen Wang,Yibing Lv,Zeng Fan-dian,Yan Li,Guanxin Shen,Ping Lei,Juan Tao
标识
DOI:10.1016/j.jid.2023.12.023
摘要
Abstract
The migration of γδ T lymphocytes towards skin lesions and their concomitant pathogenic IL-17A production play a crucial role in the pathogenesis of psoriasis. However, the regulatory mechanisms of IL-17A production by γδ T cells and their migration remain to be fully explored. Intracellular glucose regulated protein 78 (GRP78) is a molecular chaperone that regulates endoplasmic reticulum stress, while secretory GRP78, as a member of the resolution-associated molecular patterns, exerts immunoregulatory effects. Here, we reported that both the intracellular GRP78 in skin lesions and secretory GRP78 in the serum were significantly decreased in psoriasis patients. A GRP78 knockdown exacerbated IMQ-induced skin inflammation while the application of recombinant GRP78 protein or BIX (a GRP78 inducer) attenuated the dermatitis. Mechanistically, the GRP78 knockdown in keratinocytes enhanced the production of chemokines, specifically CCL20, that regulates γδ T cell migration. Moreover, recombinant GRP78 was found to directly bind to γδ T cells to suppress its migration ability and pro-inflammatory capacities by down-regulating the CCR6 and IL-17A expression. Collectively, our results uncovered a pivotal role of GRP78 in the pathogenesis of psoriasis, which was mainly exerted by regulating the interaction between keratinocytes and γδ T cells, and might provide a promising target for psoriasis therapy.
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