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通过放大IL-23/IL-17轴信号通路,GPR97的枯竭会加剧伊米基莫德诱导的牛皮病变

Yaoxin Gao¹, Weirong Zhan², Dandan Guo²

¹Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, China; Biotherapy Center, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China.

Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie

|September 11, 2024

概括

粘附分子GPR97通过影响免疫细胞功能和角质细胞增殖,在皮肤牛皮中起着至关重要的作用. 它的耗尽加剧了类似牛皮的症状,而它的激动剂减轻了这种疾病.

科学领域:

免疫学免疫学免疫学
皮肤病学皮肤病学
细胞生物学细胞生物学

背景情况:

牛皮的发病包括激活的皮肤树突细胞 (DCs) 释放IL-23,促进Th17细胞分化和IL-17的产生,导致角质细胞的过度生产.
G蛋白结合受体 (GPCR) 信号,特别是粘附分子GPR97,影响了牛皮中的这种自身免疫循环.
在角质细胞中GPR97的确切功能和在牛皮中皮肤免疫力仍未完全阐明.

研究的目的:

为了研究GPR97在皮肤牛皮病的发病过程中的作用.
用各种小鼠模型探索GPR97如何影响角质细胞和皮肤免疫力.

主要方法:

使用了GPR97枯竭 (GPR97-/-),树突细胞特异性GPR97条件淘汰 (DC-cKO) 和质素14特异性条件淘汰 (K14-cKO) 的小鼠.
在这些小鼠模型中使用imiquimod (IMQ) 诱导的牛皮样皮肤病变.
服用贝克罗梅他松二 propionate (BDP),一个GPR97激动剂,并分析了DCs中的NF-κB p65激活.

主要成果:

缺乏GPR97显著加剧了类似牛皮的病变,其特征是过度增殖的角质细胞和DCs和Th17细胞的增加积累.
这些发现在GPR97-/-,DC-cKO和K14-cKO牛皮模型中是一致的.
BDP治疗减轻了类似牛皮的皮肤病,限制了HaCaT细胞增殖,并抑制了Th17细胞分化,与DCs中NF-κB p65激活的减少相关.

结论:

在牛皮病的发病过程中,GPR97是不可或缺的,它会影响免疫细胞的丰富和皮肤的功能.
GPR97 影响了角质细胞的增殖和分化,突出了其作为治疗点的潜力.
调节GPR97信号,例如,通过BDP,为管理牛皮提供了一个有希望的策略.

关键词:

这里是DCs DCs DCs.在 GPR97 中使用.角质细胞 (keratinocytes) 是一种细胞.牛皮是一种病.在Th17细胞中.

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