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1.广州医科大学附属第一医院,广东省广州市越秀区东风西路195号,511436
2.昆明理工大学医学院
Received:09 March 2021,
Revised:2021-10-01,
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马钦海,陈瑞晗,雷标等.基于NF-κB通路探讨六神胶囊对脂多糖诱导巨噬细胞RAW264.7炎症反应的影响[J].中医杂志,
[J/OL]. Journal of Traditional Chinese Medicine, 2021, 1-7.
马钦海,陈瑞晗,雷标等.基于NF-κB通路探讨六神胶囊对脂多糖诱导巨噬细胞RAW264.7炎症反应的影响[J].中医杂志, DOI:10.13288/j.11-2166/r...001.
[J/OL]. Journal of Traditional Chinese Medicine, 2021, 1-7. DOI:
目的
2
探讨六神胶囊的抗炎作用及其机制。
方法
2
取对数生长期的RAW264.7细胞,分为六神胶囊组和地塞米松组,六神胶囊按9.76、4.88、2.44、1.22、0.61、0.31、0.15 μg/ml梯度稀释;地塞米松按250、125、62.5、31.25、15.63、7.81、3.91 μg/ml梯度稀释,选择细胞存活率大于90%的最大3个六神胶囊浓度和最大无毒剂量的地塞米松进行后续实验。RAW264.7细胞分为空白组、地塞米松组、模型组及六神胶囊高、中、低剂量组,每组3个复孔。除空白组外,其余各组加入500 ng/ml脂多糖(LPS)1 ml刺激1 h诱导建立炎症模型。造模后六神胶囊高、中、低剂量组分别加入筛选浓度的高、中、低浓度的六神胶囊溶液各1 ml;地塞米松组加入筛选浓度的地塞米松溶液1 ml;模型组和空白组加入1ml培养液。24 h后收集细胞上清液检测一氧化氮(NO)的浓度,ELISA法检测细胞中白细胞介素1β(IL-1β)、肿瘤坏死因子α(TNF-α)、白细胞介素6(IL-6)的含量,实时荧光定量PCR检测细胞中IL-1β、TNF-α、IL-6和诱导型一氧化氮合酶(iNOS)mRNA水平的表达,蛋白印迹实验检测核因子κB p65(NF-κB p65)、磷酸化核因子κB p65(p-NF-κB p65)、核因子抑制蛋白κB(IκBα)和磷酸化核因子抑制蛋白κB(p-IκBα)的表达。
结果
2
选择六神胶囊1.22、0.61、0.31 μg/ml浓度,地塞米松31.25 μg/ml浓度进行后续实验。与空白组比较,模型组细胞中NO、IL-6、IL-1β及TNF-α水平,IL-6、IL-1β、TNF-α和iNOS mRNA表达,p-IκBα、p-NF-κB p65蛋白表达显著升高,IκBα蛋白表达显著降低(
P
<0.01);与模型组比较,地塞米松组及六神胶囊中、高剂量组细胞NO、IL-6、IL-1β和TNF-α水平,IL-6、TNF-α、IL-1β和iNOS mRNA表达,p-IκBα和p-NF-κB p65蛋白表达均显著降低,IκBα蛋白表达升高(
P
<0.05或
P
<0.01);与地塞米松组比较,六神胶囊高剂量组IL-1β水平降低、IL-6水平升高,TNF-α mRNA及p-NF-κB p65蛋白表达显著降低(
P
<0.01);六神胶囊高剂量组TNF-α、IL-1β含量,IL-6、TNF-α mRNA表达,p-NF-κB p65蛋白表达低于六神胶囊中、低剂量组(
P
<0.01)。
结论
2
六神胶囊在体外具有良好的抗炎活性,可能通过抑制NF-κB信号通路的激活,降低iNOS的表达,进一步抑制NO的合成和炎性细胞因子的产生,达到改善炎症反应的目的,且以高剂量效果较佳。
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