目的:针对Ⅱ型单纯疱疹病毒(HSV-2)包膜糖蛋白gD以及包膜糖蛋白gB的CTL表位,构建重组真核表达质粒pVAX—gD—CTL。方法:根据GeneBank提供的HSV-2G株糖蛋白D基因(gD)序列设计PCR引物,以已构建好的pc—gD为模板,特异性扩增HSV-2gm片段,将其克隆于pVAX1载体中构建成质粒pVAX—gD,再将其双酶切后引入CTL片段构建重组真核表达质粒pVAX—gD—CTL。结果:将重组的pVAX—gD—CTL真核表达质粒转化大肠杆菌后,筛选阳性克隆进行酶切及测序鉴定。结论:初步构建HSV-2 pVAX—gD—CTL重组真核表达质粒。
Objective:To create a new vaccine against HSV, we aimed at constructing a recombinant eukaryotic plasmids pVAX - gD - CTL based on HSV - 2 gB and gD protein coding - gene. Methods: HSV - 2 gD protein coding - gene was amplified from pc - gD by PCR and inserted to pVAX1 plasmid, together with gB protein coding - CTL epitope. The recombinant plasmid pVAX - gD - CTL was tested in mice by inoculation via intramuscular injection. CTL activity was detected by Lactic Dehydrogenase (LDH) assay. Results : Success of constructing recombinant plasmids was confirmed by restriction enzyme and DNA sequencing. Protein coded by gD gene was detected in COS -7 cells. The CTL activity was increased. Conclusion:We successfully constructed recombinant eukaryotic plasmids. The specific cell -mediated immune response against the virus was e- licited when BALB/C mice were immunized with pVAX- gD -CTL DNA vaccine.