四川农业大学学报 ›› 2007, Vol. 25 ›› Issue (03): 337-342.doi: 10.16036/j.issn.1000-2650.2007.03.014

• 研究论文 • 上一篇    下一篇

重组鸭α-干扰素基因工程菌表达条件的研究

杨梅1, 程安春1,2, 汪铭书1,2, 张瑶2, 龚永强1, 陈斌1,3   

  1. 1. 四川农业大学 动物科技学, 四川 雅安 625014;
    2. 动物疫病与人类健康四川省重点实验室, 四川 雅安 625014;
    3. 四川省兽医防疫总站, 成都 610041
  • 收稿日期:2006-10-26 出版日期:2007-09-30 发布日期:2017-03-04
  • 基金资助:
    国家科技攻关重大项目(2004BA901A03);教育部"新世纪优秀人才支持计划"项目(NCET-04-0906);四川省教育厅重点项目(2003A024);四川省重点建设学科项目(SZD0418)。

Studies on the Expression Conditions of Engineering E. coli Expressing Recombinant Duck Interferon-α

YANG Mei1, CHENG An-chuan1,2, WANG Ming-shu1,2, ZHANG Yao2, GONG Yong-qiang1, CHEN Bin1,3   

  1. 1. College of Animal Science and Technology, Sichuan Agricultural University, Yaan 625014, Sichuan, China;
    2. Key Laboratory of Animal Disease and Human Health of Sichuan Province, Yaan 625014, Sichuan, China;
    3. Sichuan Provincial Animal Epidemic Prevention, Supervision General Office, Chengdu 610041, China
  • Received:2006-10-26 Online:2007-09-30 Published:2017-03-04

摘要: 为了确定重组鸭α-干扰素(DuIFN-α)基因工程菌BL2(DE3)/pET32a+-DuIFN-α的最佳表达条件,对影响原核表达的主要因素:IPTG浓度、诱导时期、收获时间、培养诱导温度、葡萄糖浓度及培养基进行了优化;并利用抗性筛选对表达质粒的稳定性进行了研究。结果显示,诱导基因工程菌BL2(DE3)/pET32a+-DuIFN-α表达DuIFN-α的最佳条件为:以TB+5 g/L葡萄糖培养基37℃培养至菌体OD600=0.8~1.1时,加入IPTG至终浓度0.2 mmol/L,30℃诱导培养4~5 h。在最佳表达条件下,DuIFN-α的相对含量为34.1%,总含量(终菌体浓度×相对含量)达79.9;各种优化条件对表达质粒的稳定性未见明显影响。

关键词: 重组鸭α-干扰素, 表达条件, 优化

Abstract: To determine the optimal condition of the genetic engineering E. coli BL21(DE3)/pET32a+-DuIFN-α which expressed duck interferon-α, IPTG concentration, induction time, harvest period, cultivation temperatures, glucose concentration and culture medium were optimized in this study and plasmid stability was studied by the screening of resistance. The optimal inductive conditions were as follows:the culture medium was TB+5 g/L glucose, the culture temperature and the induction temperature were 37℃ and 30℃, OD600 was 0.8~1.1, the concentration of IPTG was 0.2 mmol/L and the induction time was 4~5 h. By optimizing way, the relative amount of duck interferon-α was 34.1%, but there was no signal difference on plasmid stability by screening of resistance.

Key words: recombinant duck interferon-α, expression conditions, optimization

中图分类号: 

  • S834