Mol Immunol:研究揭示Treg细胞在ANCA相关血管炎中的作用机制

2020-10-03 MedSci原创 MedSci原创

天然存在的调节性T细胞(Treg)在控制ANCA相关血管炎(AAV)的免疫耐受性中的作用尚未得到很好的界定。因此,我们根据AAV发病过程中FOXP3和CD45RA的表达情况,将表型异质的Treg细胞分

天然存在的调节性T细胞(Treg)在控制ANCA相关血管炎(AAV)的免疫耐受性中的作用尚未得到很好的界定。因此,我们根据AAV发病过程中FOXP3和CD45RA的表达情况,将表型异质的Treg细胞分成不同的亚群。

本研究纳入了54名AAV患者(38名肾脏受累的患者)和19名健康对照(HCs)。通过流式细胞仪检测CD4+T细胞亚群和细胞因子的水平。在共培养实验中测量Treg免疫抑制能力。使用接受者操作特征曲线下的区域(AUC)评估Treg子集的诊断价值。

 

结果显示,AAV患者的活化Treg细胞的百分比和数量较低(aTreg,P = 0.044,P = 0.002),而总Treg细胞的水平较高(P = 0.001,P = 0.026),免疫抑制能力减弱。AAV患者中效应记忆T细胞亚群的比例(P<0.001)增加。有趣的是,aTreg的AUC显著提高了AAV的诊断潜力。此外,Th17/aTreg的比例在活动性和肾血管炎患者中显著增加,Th17/Treg亚群比例与肌酐或BUN呈正相关。此外,我们发现AAV患者的细胞因子IL-2和IL-4表现为下降,而IL-6、IL-10、TNF-α、IFN-γ和IL-17A呈上升趋势。

 

该结果表明,总Treg水平的增加,以及功能缺失,aTreg细胞的减少,构成了AAV潜在的新型生物标志物,而Th17/aTreg的比值可能作为识别和监测有肾脏受累和疾病缓解的AAV患者的重要工具。

 

原始出处:

 

Yanlin WangShulan Zhang, et al., Reduced activated regulatory T cells and imbalance of Th17/activated Treg cells marks renal involvement in ANCA-associated vasculitis. Mol Immunol. 2020 Feb;118:19-29. doi: 10.1016/j.molimm.2019.11.010. 

 

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    2020-10-05 Boyinsh
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    2020-10-04 肿肿

    机制研究离临床仍然有距离,不过与临床结合思考,仍然有帮助的,不能仅仅是纯临床思维,转化思维同样重要

    0

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