Front Immunol :狼疮性肾炎的B细胞亚群和细胞特征与疾病复发有关

2021-09-24 从医路漫漫 MedSci原创

肾病复发对狼疮性肾炎(LN)患者的长期预后有不利影响,但其致病机制尚不清楚。B细胞信号因子miR-148a、BACH1、BACH2和PAX5的表达与B淋巴细胞稳态调控相关。

  肾病复发对狼疮性肾炎(LN)患者的长期预后有不利影响,但其致病机制尚不清楚。B细胞信号因子miR-148a、BACH1、BACH2和PAX5的表达与B淋巴细胞稳态调控相关。B细胞特征与LN的复发是否有关尚不清楚。

方法:比较多次复发(MR, 36个月内复发≥3次)LN患者与无复发(NR) LN患者在病情平稳期间B淋巴细胞亚群和细胞特征。此外,从治疗初治的活动期LN患者中分离出循环中的B淋巴细胞,用拮抗素-148a体外治疗,研究miR-148a、BACH1、BACH2和PAX5之间的关系。

结果:MR组(n=19)与NR组(n=14)相比,循环幼稚B细胞百分率明显降低,而记忆性B细胞/幼稚B细胞比值明显升高。MR患者血清B细胞miR-148A水平较高,BACH1、BACH2和PAX5在幼稚B细胞和记忆性B细胞中表达较低。拮抗素-148A上调了BACH1、BACH2和PAX5的表达,并抑制了B细胞的增殖,这些细胞是从治疗初治的活动期LN患者中分离出来的幼稚和记忆B细胞。

表1 多次复发和未复发狼疮性肾炎患者的循环淋巴细胞亚群和细胞因子谱。

图1 MIR-148A、BACH1、BACH2和PAX5在多次复发和未复发狼疮性肾炎患者幼稚和记忆B细胞中的表达。从狼疮性肾炎多次复发组(MR)(n=19)和未复发组(NR)(n=14)分离出幼稚和记忆B细胞。QPCR检测MIR-148A、BACH1、BACH2和PAX5的表达。MIR-148A在图(A)幼稚B细胞和(B)记忆B细胞中的表达归一化为U6表达,BACH1、BACH2和PAX5在图(C)幼稚B细胞和(D)记忆B细胞中的表达归一化为GAPDH表达,并与健康对照组(HC)(n=10)相比表达差异2倍。数据用均值±标准差表示,用方差分析进行统计学分析,然后进行非随机Dunnett’s检验。*p<0.001,MR vs NR;#p<0.001,MR vs HC。

图2 拮抗素-148a对初治活动性狼疮性肾炎患者幼稚和记忆性B细胞miRNA-148A、BACH1、BACH2和PAX5表达及细胞增殖的影响。

结论:B细胞亚群和miR-148A、BACH1、BACH2和PAX5细胞特征的改变可能与不同表型患者的LN复发风险相关。

原文出处:

Yap DYH,Yung S, Lee P,et al,B Cell Subsets and Cellular Signatures and Disease Relapse in Lupus Nephritis.Front Immunol 2020;11

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    2021-09-29 13f0c37dm61暂无昵称

    那不是利妥昔单抗可以更好的治疗狼疮性肾病了?

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    2021-09-26 villahu

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