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• 基础研究 • 上一篇    下一篇

小鼠LIF编码基因的克隆与真核表达载体pcDNA3.1-LIF的构建

姜 秋1,艾永华1,聂代邦2,孙宏晨1,欧阳红生2   

  1. 1.吉林大学口腔医院儿童牙病科,吉林 长春 130041; 2.吉林大学畜牧兽医学院生物技术系,吉林 长春 130062
  • 收稿日期:2007-11-21 修回日期:1900-01-01 出版日期:2008-09-28 发布日期:2008-09-28
  • 通讯作者: 孙宏晨

Cloning of mouse full-lenth LIF gene and construction of  eukaryotic expression vector pcDNA3.1-LIF

JIANG Qiu1, AI Yong-hua1, NIE Dai-bang2, SUN Hong-chen1, OUYANG Hong-sheng2   

  1. 1.Department of Pedodontics,Stomatology Hospital,Jilin University,Changchun 130041,China;2. Department of Biotechnology,School of Animal Science and Veterinary Medicine,Jilin University,Changchun 130062,China
  • Received:2007-11-21 Revised:1900-01-01 Online:2008-09-28 Published:2008-09-28
  • Contact: SUN Hong-chen

摘要: 目的:通过克隆小鼠LIF编码基因,构建pcDNA3.1-LIF真核表达载体,为下一步建立转基因动物模型奠定基础。方法:采用ICR雌性小鼠子宫组织,提取总RNA,运用RT-PCR技术,扩增出小鼠LIF基因全长编码序列,采用同源重组方法构建具有新霉素抗性的小鼠LIF真核表达载体pcDNA3.1-LIF。结果:通过PCR获得了约612 bp大小的特异性cDNA片段。经核苷酸序列分析,扩增得到的片段与小鼠LIF cDNA序列同源性为100%。经PCR及酶切鉴定筛选阳性克隆菌,表明LIF编码序列正确连入pcDNA3.1载体中。结论:成功克隆了小鼠LIF编码基因,并构建了真核表达载体pcDNA3.1-LIF。

关键词: 聚合酶链反应, 基因克隆, 真核表达载体, 小鼠, 近交ICR

Abstract: Abstract:Objective To construct an eukaryotic expression vector pcDNA3.1-LIF by cloning mouse LIF genes and provide basis for establishment of transgenic animal models. Methods Total RNA was extracted from the tissue of the ICR mouse uterus .The full-lenth LIF gene of the mouse was amplified by RT-PCR and an eukaryotic expression vector pcDNA3.1-LIF with neomycin resistant was constructed by homologous recombination.Results The  amplfied fragments was LIF cDNA about 612 bp, it had 100% homogeneity with mouse LIF cDNA sequence by nucleotide sequence analysis. An eukaryotic expression vector pcDNA3.1-LIF with neomycin resistant of the mouse was successfully constructed by the identification of enzyme digestion.Conclusion The mouse LIF gene is successfully cloned and an eukaryotic expression vector pcDNA3.1-LIF is successfully constructed.

Key words: polymerase chain reaction, gene clone, eukaryotic expression vector, mice, inbred ICR

中图分类号: 

  • Q782