›› 2011, Vol. 38 ›› Issue (5): 101-104.

• 生物技术 • 上一篇    下一篇

猪防御素基因pBD-2在大肠杆菌中的重组和融合表达

徐海涛1, 马立保2, 何启盖1, 廖冰麟2, 任芬芬3   

  1. 1. 华中农业大学农业微生物学国家重点实验室,湖北武汉 430070;2. 华中农业大学动物科技学院,湖北武汉 430070;3. 湖南农业大学动物科学技术学院,湖南长沙 410128
  • 收稿日期:2010-10-27 修回日期:1900-01-01 出版日期:2011-05-20 发布日期:2011-05-20
  • 通讯作者: 马立保

Recombination and Fusion Expression of Porcine Defensin Gene pBD-2 in E.coli

XU Hai-tao1, MA Li-bao2, HE Qi-gai1, LIAO Bing-lin2, REN Fen-fen3   

  1. 1. National Key Laboratory of Agricultural Microbiology,Huazhong Agricultural University,Wuhan 430070,China;2. College of Animal Science and Technology,Huazhong Agricultural University,Wuhan 430070,China;3. College of Animal Science and Technology,Hunan Agricultural University,Chansha 410128,China
  • Received:2010-10-27 Revised:1900-01-01 Online:2011-05-20 Published:2011-05-20

摘要: 哺乳动物防御素是动物机体在抵御病原微生物的防御反应中产生的一类重要的抗菌肽物质,具有十分广泛的抗菌谱,在先天免疫上起重要作用。本研究根据已报道的pBD-2基因cDNA序列,合成了3条基因片段(1、2、3)。片段1、2和片段2、3各有15个碱基互补配对,PCR扩增延伸得到pBD-2基因,将pBD-2基因克隆至原核表达载体pGEX-KG,成功地在大肠杆菌BL21(DE3)中表达出pBD-2融合蛋白。pBD-2基因的成功表达为进一步研究其抗菌活性打下了基础。

关键词: 猪β-防御素-2; 原核表达; 融合蛋白

Abstract: Defensin is an important antimicrobial peptide produced in the course of animals’ defense against pathogens,which has a broad antibacterial spectrum and plays an important role in innate immunity. Based on cDNA sequence of porcine defensin β-defensin-2 gene reported in this study,three gene fragment (1,2,3) were synthesized in this experiment. Fragment 1,2 and fragment 2,3 had respectively 15 bases for complementary pair. pBD-2 gene was produced by PCR amplifing,and pBD-2 was inserted into expression vector (pGEX-KG) and recombinant vector transformed into E.coli,where recombinant vector produced fusion protein successfully.The expression of pBD-2 gene lays a foundation in research on antimicrobial activities of defensin.

Key words: porcine defensin β-defensin-2; prokaryotic expression; fusion protein

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