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TYK2 rs34536443 (P1104A) 变体抑制ICAM1介导炎症:从孟德尔随机化和功能分析的见解

Bowen Dai¹, Ye Tang¹, Bin Zhang¹

¹Department of Surgery VIII, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200071, People's Republic of China.

Psoriasis (Auckland, N.Z.)

|August 18, 2025

概括

这项研究揭示了细胞间粘附分子1 (ICAM1) 作为牛皮的关键因素,由氨酸激酶2 (TYK2) 遗传变异调节. 在牛皮模型中,TYK2抑制通过降低ICAM1水平来显示治疗潜力.

科学领域:

免疫学免疫学免疫学
遗传学是一个遗传学.
皮肤病学皮肤病学

背景情况:

牛皮病的发病包括遗传因素,包括氨酸激酶2 (TYK2).
在牛皮中TYK2的确切作用和调节机制尚未完全理解.
识别关键的蛋白质和通路对于理解牛皮的发展至关重要.

研究的目的:

使用基于摘要的门德尔随机化 (SMR) 识别与牛皮相关的蛋白质.
阐明在牛皮中发现的蛋白质的调节机制.
调查针对TYK2-ICAM1轴的治疗潜力.

主要方法:

基于摘要的门德尔随机化 (SMR) 分析与pQTL数据集成,以识别与牛皮相关的蛋白质.
在THP-1细胞中对TYK2单核酸多态 (SNP),rs34536443 (P1104A) 的功能分析.
在突变细胞中激活脂多糖 (LPS) 后评估ICAM1和细胞因子表达.
评估TYK2抑制剂 (Deucravacitinib) 在因米基莫德 (IMQ) 诱导的牛皮小鼠模型中.

主要成果:

在SMR分析中,细胞间粘附分子1 (ICAM1) 被确定为牛皮的因果蛋白,由TYK2 SNP rs34536443.3调节.
在THP-1细胞中,TYK2-P1104A突变显著降低了LPS诱导的ICAM1和促炎性细胞因子 (IL-1β,TNF-α,IL-6,IL-18) 的表达.
在体内,Deucravacitinib治疗在IMQ诱导的牛皮小鼠模型中有效下调ICAM1.

结论:

ICAM1被确定为牛皮的关键调解者,其调节与TYK2 SNP rs34536443.3相关.
该TYK2-P1104A变体通过减弱ICAM1和细胞因子的产生,显示出抗炎作用.
这些发现突出了TYK2-ICAM1轴作为牛皮的重要途径,并支持TYK2抑制剂作为潜在的治疗策略.

关键词:

在GWAS中,GWAS就是GWAS.在 ICAM1 中,这就是TYK2TYK2.在pQTLTL中,pQTL是指pQTL.

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