当归补血汤含药血清抑制JAK2/STAT1/3信号通路诱导人类风湿关节炎成纤维样滑膜细胞凋亡的机制研究

被引:10
作者
赵莹 [1 ]
王爽 [2 ]
潘志 [1 ]
汪少琼 [2 ]
王颖航 [2 ]
机构
[1] 长春中医药大学
[2] 长春中医药大学第一附属医院
关键词
当归补血汤含药血清; 人类风湿关节炎成纤维样滑膜细胞; 增殖; 凋亡; JAK2/STAT1/3信号通路; 大鼠;
D O I
10.19378/j.issn.1003-9783.2023.07.002
中图分类号
R285.5 [中药实验药理];
学科分类号
100806 [中药药理学];
摘要
目的 基于JAK2/STAT1/3信号通路探讨当归补血汤含药血清对肿瘤坏死因子α(TNF-α)诱导的人类风湿关节炎成纤维样滑膜细胞(HFLS-RA)增殖、凋亡的影响及机制。方法 将Wistar大鼠随机分为空白组、雷公藤多苷组(9.45 mg·kg-1)及当归补血汤高、中、低剂量组(15、7.5、3.75 g·kg-1),连续灌胃给药7 d,制备大鼠空白血清及含药血清。将HFLS-RA细胞随机分为6组,即空白组(10%空白组大鼠血清培养基)、模型组(20 ng·mL-1TNF-α+10%空白组大鼠血清培养基)、雷公藤多苷组(20 ng·mL-1TNF-α+10%雷公藤多苷组大鼠血清培养基),以及当归补血汤含药血清低、中、高剂量组(20 ng·mL-1TNF-α+10%当归补血汤低、中、高剂量组大鼠血清培养基);按照分组设置加入终质量浓度为20 ng·mL-1的TNF-α,1 h后加入相应含药(或空白)血清处理24 h。采用CCK-8法检测HFLS-RA细胞增殖活性;流式细胞术(Annexin V-FITC/PI双染法)检测HFLS-RA细胞凋亡情况;RT-PCR法检测细胞中Bax、Bcl-2、caspase-3 mRNA表达;ELISA法检测细胞上清液中白细胞介素6(IL-6)、白细胞介素15(IL-15)水平;Western Blot法检测细胞中Bax、Bcl-2、caspase-3、p-JAK2、p-STAT3、p-STAT1蛋白表达水平。结果 与空白组比较,模型组HFLS-RA细胞的增殖活性显著升高(P<0.01),细胞凋亡率明显下降(P<0.05),IL-6、IL-15水平显著升高(P<0.01);Bax、caspase-3 mRNA及蛋白表达水平显著降低(P<0.01),而Bcl-2 mRNA及蛋白表达水平显著升高(P<0.01),Bax/Bcl-2比值显著降低(P<0.01);细胞p-JAK2、p-STAT1、p-STAT3蛋白表达水平显著升高(P<0.01)。与模型组比较,雷公藤多苷组及当归补血汤含药血清各剂量组HFLS-RA细胞的增殖活性均显著降低(P<0.01),细胞凋亡率显著升高(P<0.05,P<0.01),IL-6、IL-15水平均显著降低(P<0.01);Bax、caspase-3mRNA及蛋白表达水平显著升高(P<0.01),而Bcl-2 mRNA及蛋白表达水平显著降低(P<0.05,P<0.01),Bax/Bcl-2比值显著升高(P<0.01);当归补血汤含药血清中、高剂量组HFLS-RA细胞的p-JAK2、p-STAT1、p-STAT3蛋白表达水平均显著降低(P<0.01)。结论 当归补血汤含药血清对TNF-α诱导HFLS-RA细胞增殖有显著的抑制作用,并可促使其凋亡,其机制可能与抑制JAK2/STAT1/3信号通路转导有关。
引用
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页码:870 / 877
页数:8
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