人miR-152基因的慢病毒载体的构建及稳定株筛选
DOI:
CSTR:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

国家自然科学基金项目(81270938);创新研究群体科学基金。


Construction of has-miR-152 lentiviral vector and screening of cell strain for stable expression
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    摘要:目的:构建人miR-152基因重组慢病毒载体并筛选稳定表达株。 方法:PCR扩增包括miR-152前体所在区域的基因组DNA,克隆到慢病毒载体表达质粒pGIPZ中,得到重组的pGIPZ-miR-152表达载体,通过与包装质粒共转染HEK-293T细胞,获得携带miR-152 minigene的重组慢病毒。用病毒感染HepG2细胞,72 h后用嘌呤霉素筛选。用real-time PCR法检测miR-152基因的表达。 结果:构建的重组质粒经双酶切验证和测序比对鉴定正确;该质粒转染293T细胞获取的慢病毒滴度达7.5×107 TU/mL;用病毒感染HepG2细胞,感染效率达70%以上。药物筛选10 d后,获得的过表达株miR-152表达量比正常细胞高近10倍。 结论: 成功构建人miR-152基因慢病毒载体质粒pGIPZ-miR-152,并筛选出miR-152过表达细胞株,为后续实验奠定基础。

    Abstract:

    Abstract: Objective:To construct a lentiviral vector of homo sapiensmiR-152 (hsa-miR-152) and screen the cell strain for its stable expression. Methods:The fragments of pre-miR-152 were cloned from genomic DNA of human adipose tissue and inserted into lentiviral vector pGIPZ. The recombinant plasmid pGIPZ-miR-152 was confirmed by restriction endonuclease analysis and DNA sequencing. 293T cells were transfected with the recombinant plasmid pGIPZ-miR-152 and the supernatant containing the lentivirus particles was harvested to determine the virus titer and used to infect HepG2 cells. Puromycin was used to screen the infected cells, so as to obtain a cell strain for stable expression. The expression of miR-152 was determined using real-time PCR. Results:The restriction enzyme digestion and DNA sequencing demonstrated the lentiviral vector pGIPZ-miR-152 was constructed. The lentiviral vector was transfected into 293T cells and the viral titer reached 7.5×107 TU/mL. HepG2 cells were infected by the lentivirus and the infection efficiency was over 70%. The expression of miR-152 was increased nearly 10 folds in the overexpression group following screening with puromycin for 10 days. Conclusion: The lentiviral vector expressing hsp-miR-152 was constructed successfully. The cell strain with stable overexpression of miR-152 was also obtained, which provided the material for the further study of molecular function of miR152 in nonalcoholic fatty liver disease.

    参考文献
    相似文献
    引证文献
引用本文

冯跃英,许晓琴,林胡,史春梅,季晨博,郭锡熔,傅君芬.人miR-152基因的慢病毒载体的构建及稳定株筛选[J].临床检验杂志,2013,31(1):20-23

复制
分享
相关视频

文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2012-09-17
  • 最后修改日期:2012-11-24
  • 录用日期:
  • 在线发布日期: 2013-02-17
  • 出版日期:
文章二维码
您是第位访问者  苏ICP备13058113号-3
苏公网安备32010202012004号
主管单位:江苏省医学会  出版单位:临床检验杂志
单位地址:江苏省南京市中央路42号  邮编:210008
电话:025-83620683 E-MAIL:lcjyzz@163.com
技术支持:北京勤云科技发展有限公司