FOLR1慢病毒表达载体的构建及鉴定

Construction and Identification of Lentiviral Vector Carrying FOLR1 Gene

本研究通过构建叶酸结合蛋白1(FOLR1)基因的慢病毒表达载体并进行表达鉴定。采用PCR技术扩增出基因全长,克隆至pWPI载体质粒,重组阳性克隆行PCR和测序鉴定,将重组载体质粒与辅助质粒共同转染人肾上皮(293T)细胞包装病毒,病毒颗粒感染人卵巢上皮癌(SKOV3)细胞,流式分选,RT-PCR和Western blot检测病毒感染后细胞中的FOLR1基因和蛋白表达。经鉴定结果显示重组载体质粒构建成功,293T细胞高效包装此慢病毒,携带FOLR1基因的慢病毒感染SKOV3细胞后可见大量绿色荧光细胞,流式分选后经两种方法分别检测出FOLR1基因和蛋白稳定表达。这为探讨FOLR1基因在卵巢恶性肿瘤中的生物学功能提供了实验基础。

Through this research a lentiviral vector expressing the gene of folate-binding protein-1 （FOLR1） was constructed and the corrsponding expression products were identified. Firstly, full-length of the FORL1 gene was amplified by PCR and cloned into the plasmid pWPI. Then it was further confirmed by PCR and sequencing. Secondly, af- ter the recombinant pWPI and its helper plasmid co-transfected the virus packaging 293T cells, SKOV3 cells were in- fected with the virus particles and sorted by flow cytometry. Thirdly, the FOLR1 gene was detected by RT-PCR and its protein expression was detected by Western blot. Finally, the recombinant expression vector was successfully constructed, and lentiviruses were successfully packaged by the 293T cells. A great quantity of green fluorescent cells could be seen after the SKOV3 cells were effectively infected with the lentiviruses carrying the FOLR1 gene. The sorting could be done and detected by cytometrying the FORL1 gene and its stable expression by the two meth- ods above, which laid experimental foundation for exploring its biological function in ovarian cancers.