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穿梭质粒pCDH1-GFP-HCN 4的构建及HCN 4重组慢病毒的包装 被引量:3

Construction of the shuttle plasmid pCDH1-GFP-HCN 4 and packaging of HCN 4 recombined lentivirus
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摘要 目的将全长约3.6 kb的HCN 4目的基因片段从pCDNA3-HCN 4质粒卸载下来,建立稳定的HCN 4重组慢病毒。方法用Eco RⅠ和XbaⅠ从pCDNA3-HCN 4质粒切下HCN 4目的片段连接到Puc19载体中,再用EcoRⅠ和HindⅢ从质粒Puc19切下目的片段并连接到pcDNA3.1(A)载体中,再用XbaⅠ单酶从质粒pcDNA3.1(A)双切到pCDH1-MCS1-EF1-copGFP中。用XbaⅠ或者Eco RⅠ鉴定,将阳性克隆质粒送上海生工测序,慢病毒的包装参照SBI的Lentivector Expression System操作手册进行。将构建好的慢病毒包装质粒混合物混合后感染293T细胞及心肌样骨髓基质干细胞。结果 (1)XbaⅠ及Eco RⅠ鉴定表明,PCR产物和克隆扩增产物的电泳结果显示该基因的大小约为3.6 kb;阳性克隆质粒测序结果与GENEBANK目的基因HCN 4序列完全相同;构建的目的基因质粒转染293细胞和原代猪骨髓间充质干细胞后,均发现有强烈的绿色荧光出现。(2)构建的慢病毒包装质粒混合物转染293细胞后,发现有强烈的绿色荧光出现,细胞感染率达90%以上。结论 (1)成功将全长HCN 4目的基因片段从pCDNA3-HCN 4质粒卸载下来,成功构建穿梭质粒pCDH1-MCS1-EF1-copGFP。(2)成功建立稳定的HCN 4重组慢病毒,该病毒载体有很高的转染效率。 Objective HCN 4 gene fragment is cloned from plasmid pCDNA3-HCN 4 and inserted into the shuttle plasmid pCDH1-GFP-HCN 4 and constructed HCN 4 recombined lentivirus. Methods HCN 4 gene fragment was cloned from plasmid pCDNA3-HCN 4 and inserted into plasmid Pucl9 by En- zymes Eco R | and Xba I , Then the target gene was cutted and cloned into plasmid pcDNA3.1 (A) by Enzymes Eco R I and Hind m. In the end, HCN 4 gene fragment was cutted into plasmid pCDH1-MCS1 -EFI-copGFP by Enzymes Xba I ~ Double Enzymes Xba I and Eco R I verified approach and analysising the sequence were used to confirm the positive plasmid. HCN 4 recombined lentivirus was constructed ac- cording to operating manual of Lentivector Expression System. pPACKH1- Lentivector Packaging Kit with three plasmids was used to transfect 293 T cells. After 48 hours culturing, GFP (green) was detected bythe fluorescence microscope. Results Confirmed by enzymes Xba I and Eco R I HCN 4 gene fragment was cloned into the plasmid pCDH1-MCS1 -EFI-copGFP and the sequence in the positive plasmid was confirmed by comparison with the published gene bank. The recombined lentivirus was used to transfect 293 T cells and GFP was observed in the transfected 293 ce cieney of infection was above 90 percents. Conclusion cloned from plasmid pCDNA 3-HCN 4 and inserted into The recombined lentivirus was successfully constructed and lls under the fluorescent microscope. The effi- (1) HCN 4 gene fragment was successfully e shuttle plasmid pCDH1-GFP-HCN 4. (2) had high efficiency of infection.
出处 《苏州大学学报(医学版)》 CAS 2012年第3期354-358,437,共6页 Suzhou University Journal of Medical Science
基金 国家自然科学基金资助项目(81170174 81070139) 江苏省自然科学基金(BK2011304) 江苏省"科教兴卫"医学重点人才项目(RC2011111)
关键词 HCN4基因 穿梭质粒 慢病毒 HCN 4 gene shuttle plasmid recombined lentivirus
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参考文献15

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同被引文献43

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