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内毒素相关受体基因共转染肠上皮细胞最佳转染条件的探索

Chinese Journal of Laboratory Diagnosis(2006)

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Abstract
目的探讨内毒素(LPS)相关受体CD14、Toll样受体4(TLR4)和MD-2基因共转染人小肠上皮细胞株(HIC)的最佳转染条件。方法用核糖核酸酶保护法(RPA)检测基因转染效率,分别研究质粒DNA的量、FuGENE 6转染试剂与质粒DNA的比例、转染试剂-质粒DNA复合物与靶细胞的作用时间及培养液中血清存在与否对转染效果的影响。结果FuGENE 6转染试剂转染HIC的最佳转染条件是:每种质粒DNA的量为2.0μg(使用6 cm培养皿)、转染试剂与质粒DNA的比例为4∶1、转染试剂-质粒DNA复合物与HIC的作用时间为5 h,而培养液中血清存在与否对转染效率无明显影响。结论建立了CD14、TLR4和MD-2三种表达质粒共转染HIC的优化转染方法。
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Key words
gene transfection,human intestinal epithelial cell,lipopolysaccharide-related receptor
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