【摘要】 目的构建pcDNA3-HBsAg-p30-ROP2多基因重组表达载体,并对其进行初步鉴定。方法根据重组体pcDNA3-p30-ROP2酶切位点和乙型肝炎表面抗原(HBsAg)基因序列等因素设计合成引物,扩增HBsAg目的基因片段,再应用酶切、连接等分子生物学技术将HBsAg目的基因克隆至pcDNA3-p30-ROP2表达载体中。应用聚合酶链反应(PCR)初筛,再采用酶切、测序等技术对构建的重组表达载体pcDNA3-HBsAg-p30-ROP2进行鉴定。结果 PCR扩增出HBsAg基因片段,构建了pcDNA3-HBsAg-p30-ROP2多基因真核表达载体。PCR与酶切结果显示,该基因片段大小均与理论值相符;测序结果显示该重组表达载体包含了p30-ROP2和HBsAg目的基因的完整序列。结论成功构建了多基因重组表达载体pcDNA3-HBsAg-p30-ROP2,为进一步研究多基因核酸疫苗奠定了基础。更多还原

【Abstract】 Objective To construct a multi-gene recombinant pcDNA3-HBsAg-p30-ROP2 expression vector and identify it preliminarily. Methods According to recombinant pcDNA3-p30-ROP2 restriction sites,HBV HBsAg gene sequences of primers were designed and synthesized to amplify target fragment,and then cloned into pcDNA3-HbsAg-p30-ROP2 expression vector. After sequencing,it was identified finally by restriction enzyme digestion and other molecular biology techniques. Results HBV HBsAg gene segment was amplified by PCR and the multi-gene recombinant pcDNA3-HBsAg-p30-ROP2 expression vector was constructed and identified to be correct as theoretical values. The PCR and restriction enzyme digestion results showed that HBsAg and p30-ROP2 gene in recombinant plasmid were confirmed by DNA sequencing. Conclusion The multi-gene recombinant pcDNA3-HBsAg-p30-ROP2 expression vector is successfully constructed.更多还原