摘要
AIM: To construct the eukaryotic expression plasmid containing HCV NS3 segment and to analyze the expression of NS3 protein in normal human hepatocyte HL-7702.METHODS: We amplified HCV NS3 fragment from plasmid pBRTM/HCV 1-3011 containing the whole length of HCV genome, recombined it with expression vector pcDNA3.1(-) to form the eukaryotic expression vector pcDNA3.1(-)/NS3, and transfected human HL-7702 hepatocytes with the recombined plasmid by cationic polymers. The expressed HCV NS3 protein was detected and analyzed by immunohistochemical method and Western blot.RESULTS: The amplified NS3 fragments had correct molecule weight and sequence. The successfully constructed eukaryotic expression plasmids were transfected to HL-7702 cells. The expressed NS3 proteins had correct molecular weight 70000.CONCLUSION: Eukaryotic expression vector pcDNA3.1 (-)/NS3 containing NS3 segment of HCV can be constructed, the sequence of NS3 fragments is consistent with the template. Normal human HL-7702 hepatocytes can efficiently express specific HCV NS3 protein in vitro.
瞄准:构造标志包含 HCV NS3 分割的真核细胞的表示原生质并且在正常人的 hepatocyte HL-7702 分析 NS3 蛋白质的表示。方法:我们从包含 HCV 染色体的整个长度的原生质标志 pBRTM/HCV 1-3011 放大了 HCV NS3 碎片,重新结合它与到形式的表示向量 pcDNA3.1 (-) 真核细胞的表示向量 pcDNA3.1 (-)/NS3,和有由猫的重新结合的原生质标志的 transfected 人 HL-7702 hepatocytes 离子的聚合物。表示 HCV NS3 蛋白质被免疫检测并且分析组织化学的方法和西方的污点。结果:放大 NS3 碎片有正确分子重量和顺序。成功地构造的真核细胞的表示原生质标志是到 HL-7702 房间的 transfected。有的表示 NS3 蛋白质改正分子量 70000。结论:包含 HCV 的 NS3 片断的真核细胞的表示向量 pcDNA3.1 (-)/NS3 能被构造, NS3 碎片的顺序与模板一致。正常人的 HL-7702 hepatocytes 能高效地表示特定的 HCV NS3 蛋白质在试管内。
基金
Supported by research fund from Ministry of Education of China for Studying Abroad,No.[2000]479
Natural Science Foundation of Guangdong Province,No.[2001]10-010371