细胞细胞外囊泡和免疫媒介作为活跃狼性炎的尿路生物标志物
Lilian Alves1, Ana Patrícia Lemos1, Jessyca Martins1
1Multiuser Laboratory for Research Support in Nephrology and Medical Sciences, Faculty of Medicine, Universidade Federal Fluminense, Niterói, RJ, Brazil.
Scientific reports
|August 5, 2025
概括
尿液细胞外囊泡 (uEVs) 和细胞因子在活跃的狼性炎 (LN) 中升高,表明 podocyte 损伤和炎症. 结合这些生物标志物显示出检测活性LN的前景,有助于识别患有炎的患者.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 免疫学 免疫学 免疫学
- 生物标志物发现发现
背景情况:
- 系统性红斑狼 (SLE) 可以引起狼性炎 (LN),其特点是免疫复合物的沉积,炎症和 podocyte 损伤.
- 尿液细胞外囊泡 (UEV) 和免疫媒介是脏疾病的潜在的微创生物标志物.
- 在活跃的LN中,UEVs和免疫媒介的同时变化并未得到充分理解.
研究的目的:
- 评估尿液细胞外囊泡 (uEVs) 作为狼性炎 (LN) 的生物标志物.
- 评估系统性红斑狼 (SLE) 患者的UEVs和尿路免疫媒介之间的关联.
- 确定组合生物标志物的潜力,以检测活跃的LN.
主要方法:
- 从SLE患者和健康捐赠者收集尿样.
- 使用电子显微镜,纳米级流细胞计和纳米粒子跟踪分析 (NTA) 隔离和特征尿液细胞外囊 (uEVs).
- 量化尿路免疫介质 (细胞因子) 使用多重检测.
- 与临床参数和疾病活性评分相关联的UEV计数和细胞因子水平 (R-SLEDAI-2K).
主要成果:
- 通过NTA.没有发现UEV大小或度的显著差异.
- 在SLE患者中观察到总和podocyte衍生的uEV的数量较高,特别是在活跃的LN中.
- 尿中细胞因子 (IL-6,IL-8,CCL-2) 的水平升高与SLE活性和LN相关.
- 细胞uEVs,IL-6,IFN-γ,IL-8,CCL-2和CCL-3的组合显示了活性LN检测的高预测能力 (AUC = 0.88).
结论:
- 尿路 podocyte-derived uEVs 和特定的细胞因子与活跃的 LN.相关.
- 这些发现表明,UEVs和细胞因子可能反映LN中炎症介导的 podocyte 损伤.
- 对UEVs和免疫媒介物的联合分析为识别活性LN和炎患者提供了有前途的方法.
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