炙甘草多糖对小鼠巨噬细胞再极化的影响

被引:18
作者
冯磊 [1 ]
李响 [1 ]
孟繁平 [1 ]
李妍 [2 ]
机构
[1] 延边大学医学院免疫学教研室
[2] 吉林医药学院公共卫生学院流行病学教研室
关键词
乳腺癌; 肿瘤相关巨噬细胞; 极化; 炙甘草多糖; 肿瘤微环境;
D O I
暂无
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:建立探讨炙甘草中等分子量多糖(MPRR)诱导巨噬细胞极化的情况,阐明肿瘤微环境中极化后巨噬细胞对小鼠4T1乳腺癌细胞生长的影响。方法:培养小鼠RAW264.7巨噬细胞,采用IL-4诱导并建立M2型极化模型,将培养细胞分为未诱导细胞(M0)组、M2极化(IL-4诱导)组、MPRR诱导组和Rp组(IL-4诱导12 h后MPRR再极化诱导组),流式细胞术分析巨噬细胞极化标志(CD86和CD206)的表达。免疫印迹技术分析转录因子STAT-6表达和磷酸化。收集不同条件下巨噬细胞培养上清液,ELISA法检测其IFN-γ和TGF-β浓度。结果:与对照组比较,IL-4诱导后细胞发生M2极化,可检测到RAW264.7细胞表面CD86表达下降(P<0.05),CD206表达增加(P<0.05)。而MPRR促进细胞向M1极化,可观察到其促进CD86表达而降低CD206表达(P<0.05)。M2极化后STAT-6磷酸化增加,IFN-γ分泌减少而TGF-β分泌增加(P<0.05);经MPRR处理减弱STAT-6磷酸化和TGF-β的分泌,促进IFN-γ分泌(P<0.05)。结论:炙甘草水溶性多糖促进巨噬细胞的M1极化,可拮抗IL-4诱导其M2极化效应,炙甘草多糖可调节小鼠巨噬细胞再极化。
引用
收藏
页码:1080 / 1085
页数:6
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