藁本内酯对重组人热休克蛋白60诱导的THP-1源性巨噬细胞炎症反应的作用及机制  被引量:9

Effects of ligustilide on the extracellular recombinant human heat shock protein 60 induced inflammatory reactions in the THP-1 cells and the related mechanisms

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作  者:高颖[1] 陈蕊[2] 顾宁[3] 何小丽[3] 杨志军[2] 左可可[3] 

机构地区:[1]南京中医药大学博士后流动站,210046 [2]南京中医药大学第一临床医学院中医系 [3]南京中医药大学第三附属医院心内科

出  处:《中华心血管病杂志》2016年第9期793-798,共6页Chinese Journal of Cardiology

基  金:国家自然科学基金(81173399);中国博士后科学基金(2015M571792);江苏省博士后科研资助项目(1401137C)

摘  要:目的 探讨藁本内酯(LIG)对重组人热休克蛋白60(HSP60)诱导的THP-1源性巨噬细胞炎症反应的作用及机制.方法 THP-1细胞经佛波酯诱导分化为巨噬细胞后,以免疫荧光法筛选出髓样分化因子88(MyD88)的siRNA最佳转染浓度.将巨噬细胞分为6组(n=3),包括空白对照组(siRNA转染试剂)、模型组(siRNA转染试剂+HSP60 10 mg/L)、阴性对照组(MyD88阴性对照品+ HSP60 10 mg/L)、RNAi组(MyD88 siRNA+ HSP60 10 mg/L)、LIG组(siRNA转染试剂+HSP6010 mg/L+ LIG 20 mg/L)和RNAi+ LIG组(MyD88 siRNA+ HSP60 10 mg/L+ LIG 20 mg/L).采用Western blot法检测巨噬细胞中MyD88及磷酸化核因子-κB (p-NF-κB)的蛋白表达水平,采用ELISA法检测细胞培养上清液中的肿瘤坏死因子-α (TNF-α)、白细胞介素-6(IL-6)含量.结果 (1)模型组的MyD88(1.196±0.125比0.341±0.063,P<0.01)和p-NF-κB(0.817±0.034比0.312 ±0.046,P<0.01)蛋白相对表达水平均高于空白对照组;RNAi组的MyD88(0.554±0.043)和p-NF-κB (0.538±0.063)蛋白相对表达水平均低于模型组(P均<0.01),而高于空白对照组(P均<0.05);LIG组MyD88(0.694±0.087)及p-NF-κB(0.669±0.043)蛋白相对表达水平均低于模型组(P<0.05或0.01),而高于RNAi组(P均<0.05)及空白对照组(P均<0.01);RNAi+ LIG组的MyD88(0.409±0.069)和p-NF-κB(0.395±0.046)蛋白相对表达水平均低于模型组(P均<0.01)及LIG组(P<0.05或0.01),与空白对照组比较差异无统计学意义(P均>0.05),p-NF-κB蛋白相对表达水平低于RNAi组(P<0.05).(2)模型组的TNF-α[(312.24±28.69) ng/L比(5.99±1.03) ng/L,P<0.01]和IL-6[(233.45±57.77) ng/L比(2.25±0.67) ng/L,P<0.01]含量均高于空白对照组;RNAi组的TNF-α[(235.66 ±25.12) ng/L]和IL-6[(131.59±13.99) ng/L]含量均低于模型组(P均<0.01);LIG组的TNF-α[(258.13 ±44.80) ng/L]和IL-6[(175.9Objective To investigate the effects of ligustilide (LIG) on extracellular recombinant human heat shock protein 60 (HSP60) induced inflammatory reactions in the THP-1 cells and the related mechanisms.Methods THP-1 cells were differentiated to macrophages by incubation with phorbol-12-myristate-13-acetate (PMA).The immunofluorescence method was used to screen the optimum transfection concentration of MyD88 siRNA.The macrophages were divided into six groups (n =3),including blank control (siRNA transfection reagent),model (siRNA transfection reagent + HSP60 10 mg/L),negative control (MyD88 negative control + HSP60 10 mg/L),LIG group(siRNA transfection reagent + HSP60 10 mg/L +LIG 20 mg/L),RNA interfering(RNAi) group(MyD88 siRNA + HSP60 10 mg/L) and RNAi + LIG group (MyD88 siRNA + HSP60 10 mg/L + LIG 20 mg/L).The protein expression level of MyD88 and phosphonuclear factor-κB (p-NF-κB) in macrophages and the level of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) in the culture supernatant were assessed by Western blot analyses or ELISA,respectively.Results (1)The protein expression levels of MyD88 (1.196 ± 0.125 vs.0.341 ± 0.063,P < 0.01) and p-NF-κB(0.817 ±0.034 vs.0.312 ±0.046,P <0.01) were significantly higher in the model group than those in the blank control group.The protein expression levels of MyD88 (0.554 ± 0.043) and p-NF-κB(0.538 ±0.063) in the RNAi group were significantly lower than those in the model group (all P <0.01) but significantly higher than those in the blank control group (all P < 0.05).The protein expression levels of MyD88(0.694 ±0.087,P <0.05) and p-NF-κB(0.669 ±0.043,P <0.01)in the LIG group were markedly lower than those in the model group,but higher than those in the RNAi group (P < 0.05) and the blank control group (P < 0.01).The protein expression levels of MyD88 (0.409 ± 0.069) and p-NF-κB(0.395 ±0.046) in the RNAi +

关 键 词:藁本内酯 炎症 热休克蛋白质类 

分 类 号:R285[医药卫生—中药学]

 

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