生物技术通报 ›› 2014, Vol. 0 ›› Issue (6): 115-119.

• 研究报告 • 上一篇    下一篇

毕赤酵母高密度培养表达鸡α-干扰素的工艺研究

姜正军1, 刘树海1, 王茂超1, 程全明1, 黄金1,2   

  1. (1.山东华辰生物科技有限公司,潍坊 261061;2.浙江工业大学药学院,杭州 310014)
  • 收稿日期:2013-12-03 出版日期:2014-06-25 发布日期:2014-06-25
  • 作者简介:姜正军,男,硕士,高级工程师,研究方向:蛋白类药物;E-mail:sinostar5555@gmail.com
  • 基金资助:
    山东省2011年科技发展计划资助项目(2011GGH22109)

The Improvement of Chicken Alpha Interferon Expression by a Recombinant Pichia pastoris with Cultural Condition Optimization

Jiang Zhengjun1,Liu Shuhai1,Wang Maochao1,Cheng Quanming1,Huang Jin1,2   

  1. (1. Shandong Huachen Bio-tech Co.,Ltd,Weifang 261061; 2. College of Pharmaceutical Science,Zhejiang University of Technology,Hangzhou 310014)
  • Received:2013-12-03 Published:2014-06-25 Online:2014-06-25

摘要: 考察了10 L罐规模条件下pH、温度、装液量以及碳源流加模式对毕赤酵母高密度培养表达鸡α-干扰素的影响,确定了最优的生产工艺:在pH5.5、28℃、40%装液量条件下,当初始碳源耗尽的情况下,进行甘油和甲醇混合(流加体积速率比为20∶1)脉冲流加,产物鸡α-干扰素抗病毒活性最高,可达3×106 IU/mL。将该工艺在50 L发酵罐规模条件下进行放大,重复20批,结果表明此过程重复性较好,且目的蛋白表达量稳定,具有工业化生产的实际应用价值。

关键词: 毕赤酵母, 鸡α-干扰素, 优化, 放大

Abstract: To achieve excellent performance of Pichia pastoris for chicken alpha interferon expression, pH value, temperature, culture volume and carbon source feeding pattern were optimized. The maximum anti-virus activity(3×106 IU/mL)was harvested in the conditions of pH5.5, 28℃, and 40% culture volume in 10 L fermentor, as well as the glycerol-methanol(20∶1, V/V)co-feeding pattern was conducted when carbon source exhausted. This process was successfully scaled up to 50 L fermentor and the fermentation performance was also steady, which could be taken advantage of for its industrial application.

Key words: Pichia pastoris, Chicken alpha interferon, Optimization, Up-scale