猪苓多糖经TLR4刺激小鼠骨髓来源的树突状细胞成熟

被引:19
作者
许文 [1 ]
李心群 [2 ]
机构
[1] 温州医学院微生物学与免疫学教研室
[2] 温州医学院附属第一医院急诊科
关键词
树突细胞; 猪苓多糖; 淋巴细胞培养试验,混合;
D O I
暂无
中图分类号
R392 [医学免疫学];
学科分类号
100108 [医学免疫学];
摘要
目的:研究猪苓多糖(polyporus polysaccharides,PPS)诱导小鼠骨髓树突状细胞(dendriticcell,DC)表型及功能成熟的分子机制。方法:从小鼠骨髓中分离单个核细胞(MNC),用rmGM-CSF、IL-4培养5 d后将其分为三组:实验组中加入50μg/mL PPS;阳性对照组中加1μg/mL LPS;加等量RPMI 1640培养基作为阴性对照组,继续培养48 h。苏木精-伊红(HE)染色观察细胞形态;流式细胞仪(FACS)分析DC表面CD80、CD86及MHC II(I-A/I-E)表达情况;经20μg/mL Toll-like receptor(TLR)4、TLR2单抗作用1 h后,ELISA法检测培养上清中IL-12 p40含量;混合淋巴细胞反应(MLR)检测DC对T淋巴细胞的刺激能力。结果:PPS处理的DC具有毛刺状突起,呈典型的DC形态;细胞表达MHC II、CD80及CD86增加;对T淋巴细胞刺激能力增强;分泌IL-12增加且可被抗TLR4单抗所阻断。结论:PPS通过TLR4促进体外培养的小鼠骨髓DC表型与功能成熟。
引用
收藏
页码:269 / 272
页数:4
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