调控Gal-9/Tim-3通路对小鼠胶原诱导性关节炎作用的研究

被引：4

作者：

杨骁

彭昊

周建林

方洪松

陈森

机构：

[1] 武汉大学人民医院骨科

来源：

中国医药导报 | 2016年 / 13卷 / 04期

关键词：

类风湿性关节炎; 胶原诱导性关节炎; 辅助性T细胞; 调节性T细胞; 信号通路;

D O I：

暂无

中图分类号：

R593.22 [类风湿性关节炎];

学科分类号：

1002 ; 100201 ;

摘要：

目的探讨激活或阻断Gal-9/Tim-3信号通路对小鼠胶原诱导性关节炎的影响及其机制。方法 6～8周龄雌性BALB/c小鼠30只,建立Ⅱ型胶原诱导性关节炎模型,造模后第7天加强免疫。于加强免疫前1 d随机分为激活组、阻断组、对照组,每组10只,分别经尾静脉输注半乳糖凝集素-9(Gal-9)、阻断剂Tim-3单抗、PBS。造模后28d观察三组小鼠踝关节变形程度,记录关节炎指数,ELISA法检测血清抗炎因子白介素-10(IL-10)、转化生长因子β(TGF-β)水平,RT-PCR检测踝关节滑膜组织辅助性T细胞(Th17)、调节性T细胞(Treg)标志性蛋白ROR-γt、Fox P3表达量。结果加强免疫后,三组小鼠出现不同程度关节变形,造模后第28天关节炎指数:激活组为(7.12±1.53)分、阻断组为(13.82±2.12)分、对照组为(10.88±1.84)分,差异有高度统计学意义(P<0.01);血清IL-10、TGF-β水平:激活组[(12.88±2.23)、(27.61±4.52)ng/L]明显高于对照组[(7.49±1.70)、(21.33±2.07)ng/L](P<0.01),阻断组[(4.26±1.79)、(12.35±2.42)ng/L]明显低于对照组(P<0.01);RT-PCR结果显示:ROR-γt m RNA在滑膜组织的表达情况激活组明显低于对照组(P<0.01),阻断组明显高于对照组(P<0.01);Fox P3 m RNA表达情况激活组明显高于对照组(P<0.01),阻断组明显低于对照组(P<0.01)。结论激活Gal-9/Tim-3通路可缓解小鼠胶原诱导性关节炎,阻断该通路则加重炎性反应,作用机制可能与该通路抑制Th17,活化Treg有关。

引用

页码：4 / 7

页数：4

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