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减少TRIM表达与系统性红斑狼中异常的CD4T细胞激活相关,以及其临床诊断潜力
Ayibaota Bahabayi1, Yaoyi Zhu1, Yuying Nie1
1Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China.
Immunology letters
|September 5, 2024
概括
在CD4+T细胞中减少T细胞受体相互作用分子 (TRIM) 表达与系统性红斑狼 (SLE) 的异常激活有关. 与TRIM相关的CD4+T细胞可能在SLE的发病和诊断中发挥作用.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 自免疫性疾病 自免疫性疾病
背景情况:
- 系统性红斑狼 (SLE) 是一种复杂的自身免疫性疾病,其特征是免疫系统失调.
- CD4+ T 细胞在 SLE 发病过程中起着至关重要的作用.
- T细胞受体相互作用分子 (TRIM) 是一种在T细胞功能中具有潜在作用的分子.
研究的目的:
- 研究SLE患者CD4+T细胞子集中的TRIM的表达,功能和临床相关性.
- 为了确定SLE患者,健康对照患者和类风湿关节炎患者之间的TRIM表达是否不同.
- 探索TRIM表达与SLE临床参数的关联.
主要方法:
- 分析单细胞RNA测序数据,以评估TRIM表达在人类外周血液单核细胞 (PBMCs).
- 流细胞计测量用于测量SLE患者,健康对照组和类风湿性关节炎患者的CD4+T细胞子集中的TRIM表达和功能分子.
- 相关性和ROC曲线分析,以评估TRIM在SLE中的临床相关性.
主要成果:
- 在健康个体和小鼠中,TRIM在CD4+T细胞子集,特别是天真CD4+T细胞中高度表达.
- 与TRIM-Tregs相比,TRIM+调控T细胞 (Tregs) 显示出不同的特征.
- TRIM+ T 细胞表现出改变的细胞因子分泌特征 (降低了 B 粒酶和穿孔素,增加了 IFN-γ).
- 在SLE患者中观察到TRIM+CD4+T细胞的比例减少.
- TRIM+CD4+T细胞的下调与补体水平 (C3,C1q) 的降低和C反应蛋白 (CRP) 的增加相关.
- 与TRIM相关的CD4+T细胞子集使SLE患者与健康对照和类风湿关节炎患者有所区分.
结论:
- 在CD4+T细胞中TRIM表达的减少与SLE中异常的T细胞激活有关.
- 与TRIM相关的CD4+T细胞可能与SLE病变发生有关.
- 在CD4+T细胞中TRIM表达可能作为SLE诊断的潜在生物标志物.
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