中国全科医学 ›› 2018, Vol. 21 ›› Issue (30): 3723-3729.DOI: 10.12114/j.issn.1007-9572.2018.00.215

• 专题研究 • 上一篇    下一篇

利用慢病毒载体建立过表达Nfe2l2基因的L929细胞株实验研究

刘成,汤剑明,李洋,杨将,李倩男,刘耀丹,洪莉*   

  1. 430060湖北省武汉市,武汉大学人民医院妇二科
    *通信作者:洪莉,主任医师,博士生导师;E-mail:1468247896@qq.com
  • 出版日期:2018-10-20 发布日期:2018-10-20
  • 基金资助:
    基金项目:国家自然科学基金青年科学基金资助项目(81701424);中央高校基本科研业务费专项资金青年教师资助项目(2042017kf0114)

Establishment of L929 Cell Line Overexpressing Nfe2l2 Gene Using Lentiviral Vectors:an Experimental Study 

LIU Cheng,TANG Jianming,LI Yang,YANG Jiang,LI Qiannan,LIU Yaodan,HONG Li*   

  1. No.2 Department of Gynecology,Renmin Hospital of Wuhan University,Wuhan 430060,China
    *Corresponding author:HONG Li,Chief physician,Doctoral supervisor;E-mail:1468247896@qq.com
  • Published:2018-10-20 Online:2018-10-20

摘要: 目的 利用慢病毒载体建立过表达Nfe2l2基因的L929细胞株,为探讨Nfe2l2基因在结缔组织成纤维细胞细胞外基质(ECM)重构中的作用奠定实验基础。方法 2014年12月—2015年5月,通过双酶切将Nfe2l2目的基因连接到GV341载体(Ubi-MCS-3FLAG-SV40-puromycin),经扩增、转化、验证、测序、质粒抽提,将携带目的基因的工具GV341载体质粒及病毒包装辅助质粒Helper1.0、Helper2.0转染293T细胞,完成慢病毒包装及质量检测后获取慢病毒工具载体LV-Nfe2l2,病毒感染L929细胞72 h后筛选稳定表达的细胞株L929/LV-Nfe2l2,采用Real-time qPCR测定Nfe2l2的表达。结果 经比对,构建的LV-Nfe2l2阳性克隆序列与目的基因Nfe2l2相符;L929细胞达到80%感染效率的最佳感染条件为:在ENi.S培养基中进行感染,设定感染复数(MOI)为8~10,感染时间为72 h。Real-time qPCR结果显示,经筛选的L929/LV-Nfe2l2细胞中Nfe2l2基因表达丰度为高(ΔCt值≤12)。结论 本研究成功构建了一种过表达Nfe2l2基因的慢病毒载体;LV-Nfe2l2感染L929细胞后可实现目的基因的高表达,经筛选的L929/LV-Nfe2l2细胞株可用于后续实验研究。

关键词: 转染, 慢病毒属, Nfe2l2, 成纤维细胞, 细胞外基质

Abstract: Objective To establish a L929 cell line overexpressing Nfe2l2 gene using lentiviral vectors,laying a basis for investigating the role of Nfe2l2 gene in ECM remodeling.Methods From December 2014 to May 2015,Nfe2l2 gene sequence was ligated into the GV341 vector (Ubi-MCS-3FLAG-SV40-puromycin)via restriction enzyme digestion.After amplification,transformation,verification,sequencing and plasmid extraction,the GV341 vector plasmids carrying the target gene,together with lentiviral packaging plasmids Helper 1.0 and Helper 2.0 were used to co-transfect 293T cells,and the lentiviral vector LV-Nfe2l2 was harvested after packaging and virus concentration test.After being infected by LV-Nfe2l2 for 72 h,the L929 cells were screened for stable L929/LV-Nfe2l2 cell lines.The expression of Nfe2l2 was determined by real-time qPCR.Results   Sequence analysis showed that the positive clone of LV-Nfe2l2 was consistent with the target gene Nfe2l2.The optimal conditions for L929 cells to achieve 80% infectious efficiency are as follows:ENi.S medium,MOI of 8-10,infection time of 72 h.Real-time qPCR showed that the abundance of Nfe2l2 gene in L929/ LV-Nfe2l2 cells was high(ΔCt ≤12).Conclusion   In this study,we successfully established a lentiviral vector overexpressing Nfe2l2 gene;target genes with high expression levels could be obtained by LV-Nfe2l2 infected L929 cells;the screened L929/LV-Nfe2l2 cell line can be used in further experimental studies.

Key words: Transfection, Lentivirus, Nfe2l2, Fibroblasts, Extracellular matrix