›› 2010, Vol. 37 ›› Issue (4): 71-75.

• 生物技术 • 上一篇    下一篇

奶牛乳房炎抗性基因TAP cDNA克隆及序列分析

姚学萍1,栾红雨1, 袁曦1,曹随忠1,2,余树民1,刘长松1,刘宗平2   

  1. (1.四川农业大学动物医学院,动物疫病与人类健康四川省重点实验室, 雅安 625014; 2.扬州大学兽医学院, 扬州 225009)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-04-20 发布日期:2010-04-20
  • 通讯作者: 曹随忠

Clone and Sequence Analysis of Dairy Cow’s Mastitis Resistance Gene: Tracheal Antimicrobial Peptide Gene

AO Xue-ping1,LUAN Hong-yu1,YUAN Xi1,CAO Sui-zhong1,2,
YU Shu-min1, LIU Chang-song1, LIU Zong-ping2

  

  1. (1.College of Veterinary Medicine,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University,Ya’an 625014,China; 2.College of Veterinary Medicine, Yangzhou University,Yangzhou 225009,China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-04-20 Published:2010-04-20
  • Contact: CAO Sui-zhong

摘要: 采用RT-PCR方法从奶牛乳腺组织中扩增气管抗菌肽(TAP)基因,重组到pMD19-T Simple载体中,并进行序列分析。序列分析结果显示,克隆的TAP基因包含完整的开放阅读框(ORF) 195 bp,与牛TAP基因同源性达93.8%;该ORF编码的64个氨基酸,含有β-防御素特征性结构即6个在特定位置上的保守半胱氨酸残基。TAP基因cDNA完整开放阅读框的克隆,为进一步开发应用重组牛β-防御素奠定了基础。

关键词: β-防御素; 气管抗菌肽; 乳腺; 基因克隆; 奶牛

Abstract: To investigate characterization of a mastitis resistance gene from dairy cow’s, tracheal antimicrobial peptide (TAP) gene from dairy cow’s mammary gland tissue was amplified by RT-PCR and then cloned into pMD19-T simple vector for sequence analysis. The result of DNA sequencing demonstrated that the cDNA sequence contained a open reading frame (ORF) of 195 bp which shared the highest identity of 93.8% with the TAP of bovine and encoded a 64 amino acid prepro-peptide which contained the β-defensin consensus sequence of six invariantly spaced cysteine residues. Cloning of the complete ORF of TAP may play an important role in the further designing recombinant β-defensins product.

Key words: β-defensins; tracheal antimicrobial peptide(TAP); mammary gland; gene cloning; dairy cow

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