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转染乙肝病毒基因的HepG2细胞Toll样受体2的表达上调

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摘要 目的:前期研究发现先天免疫分子Toll样受体2(Toll-like receptor2,TLR2)与乙型病毒性肝炎的免疫损伤有一定的关系,现进一步观察瞬时和稳定转染乙肝病毒(HBV)基因的HepG2细胞TLR2表达的变化。方法:采用免疫荧光流式细胞术检测TLR2在肝癌细胞株HepG2和HepG2.2.15上表达的平均荧光强度(MFI)及阳性细胞率,将前期试验获得的HBV全基因组,采用脂质体瞬时转染肝癌细胞株HepG2,采用免疫荧光流式细胞术检测TLR2在细胞上表达的MFI及阳性细胞率。结果:HepG2.2.15细胞上TLR2表达的MFI及阳性细胞率均明显高于HepG2(均P<0.001),HepG2细胞于转染48h后TLR2表达的MFI和阳性细胞率与空白对照组(转染HBVDNA剂量为0)相比均显著升高(均P<0.05),并且MFI和阳性细胞率与转染剂量均呈显著正相关(均r=0.950,P<0.001)。结论:不管在瞬时和稳定转染HBV基因的HepG2细胞,都存在细胞TLR2的上调,提示HBV感染细胞后存在TLR2信号途径的激活。
出处 《实用医学杂志》 CAS 北大核心 2009年第16期2623-2625,共3页 The Journal of Practical Medicine
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参考文献7

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