瘦素通过白细胞介素-6调控类风湿关节炎患者外周血调节性T细胞的增殖

Chinese Journal of Rheumatology(2018)

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Abstract
目的 初步探讨瘦素对RA患者外周血调节性T细胞增殖的影响.方法 分离培养6例RA患者PBMCs,分别用抗CD3(3μg/ml)/抗CD28(2μg/ml)、抗CD3(3μg/ml)/ CD28(2μg/ml)加瘦素(100 ng/ml)、抗CD3(3μg/ml)航CD28(2μg/ml)以及瘦素(100 ng/ml)加IL-6R拮抗剂(0.5μg/ml)刺激72 h.收集悬浮细胞,流式细胞术检测调节性T细胞百分率;ELISA检测细胞培养上清中IL-6、TGF-β水平.采用Wilcoxon秩和检验进行统计学分析.结果 ①与对照组比较,瘦素刺激72 h后调节性T细胞比例下降[13.6(11.6,14.8)%和9.8(7.0,10.0)%,Z=-2.201,P<0.05];IL-6、TGF-[β水平均上升[548.9(508.6,608.4) ng/L和631.8 (538.4,672.6) ng/L,Z=-1.992,P<0.05;1175.0(1 045.4,1 373.1) ng/L和1 580.2(1 315.3,1 906.5) ng/L,Z=-2.201,P<0.05];②加入IL-6R拮抗剂后,瘦素刺激PBMCs分泌IL-6水平下降[631.8(538.4,672.6) ng/L和522.7(339.3,593.3) ng/L,Z=-2.201,P<0.05];调节性T细胞比例上升[9.8(7.0,10.0)%和12.3(9.7,13.8)%,Z=-1.997,P<0.05].结论 瘦素可能通过上调IL-6,进而对外周血调节性T细胞的增殖起到负调控作用.
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Key words
Leptin,Athritis,rheumatoid,Peripheral blood mononuclear cells,Regulatory T cells,Iinterleukin-6
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