›› 2007, Vol. 34 ›› Issue (5): 60-63.

• 遗传繁育 • 上一篇    下一篇

内江猪γ干扰素基因的克隆、序列分析及真核表达载体的构建

黄亚平,郭万柱,李晓琪   

  1. 四川农业大学动物生物技术中心,雅安 625014
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-05-20 发布日期:2007-05-20

Molecular Cloning, Sequencing and Constructing Eukaryotic Expression Vector of Neijiang Pig IFN-γ

HUANG Yaping, GUO Wanzhu,LI Xiaoqi   

  1. The Center of Animal Biotechnology, Sichuan Agriculture Univerisity,Yaan 625014,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-05-20 Published:2007-05-20

摘要: 将内江猪的外周血淋巴细胞在刀豆素(ConA)的刺激下培养24 h后,提取总RNA,应用一步法RT-PCR扩增γ干扰素(IFN-γ)cDNA,克隆到PMD18-T载体,命名为pMD-N-IFN-γ,测序结果证明克隆的cDNA全长603 bp,其ORF为501 bp,编码166个氨基酸,与Genbank公布的IFN-γ比对,核苷酸同源性在99.4%以上,从而证实成功地克隆了内江猪IFN-γ基因。以pMD-N-IFN-γ质粒为模板亚克隆完整ORF区,连接到真核表达质粒pcDNA3.1(+)的EcoRI、XhoI两位点之间,经单双酶切鉴定,成功的构建了IFN-γ真核表达载体pcDNA3.1(+)-N-IFN-γs。

关键词: γ干扰素; 克隆; 序列分析; 真核表达载体构建

Abstract: Total RNA was isolated from neijiang pig peripheral blood lymphocytes which were stimulated with ConA. Then the pIFN-γ cDNA was amplified by reverse transcription polymerase chain reaction. The amplified fragment was cloned into vector pMD18-T named pMD-N-IFN-γ and then sequenced. It was found that the amplified fragment was consisted of 603 nucleotides, the ORF consisted of 501 nucleotides, encoding 166 amino acids, Neijang pig IFN-γ gene has more than 99.4% homology with other pigs on Genbank. Subcloning the ORF of pig IFN-γ gene, then the sub-cloned gene was successfully inserted between EcoRI and XhoI site of the eukaryotic expression vector pcDNA3.1(+), named pcDNA3.1(+)-N-IFN-γs.

Key words: IFN-γ; cloning; sequencing; constructing eukaryotic expression vector

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