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结核杆菌Esat6与hGM-CSF双顺反子表达载体的构建及鉴定

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摘要 目的从质粒pVAE中克隆目的基因Esat6,与hGM-CSF一起构建双顺反子表达载体pIEG,并进行鉴定。方法以质粒pVAE为模板扩增出Esat6基因,与pIRES的MCS A进行重组,构建pIEsat6重组质粒。然后再以pORF-hGM-CSF为模板扩增出hGM-CSF基因,与pIRES载体的MCS B进行重组,构建pIGM重组质粒,上述两重组质粒经PCR、限制性内切酶图谱及DNA序列测定分析等多种方法进行鉴定后,再通过酶切、连接把hGM-CSF构建于pIEsat6质粒中,形成双顺反子真核表达载体pIEG。结果通过PCR可克隆得到相应大小的产物,酶切鉴定所切下的两片段大小约为0.29 kb和0.47 kb,与预计相符。测序结果与报道一致。结论成功构建结核杆菌Esat6基因与hGM-CSF双顺反子真核表达载体,为进一步研究其结核融合DNA疫苗及其转染DC疫苗原型的免疫保护效果奠定了基础。
出处 《广东医学》 CAS CSCD 北大核心 2007年第5期697-699,共3页 Guangdong Medical Journal
基金 广东省科学计划引导项目基金资助(编号:2004B31201019)
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