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• 基础研究 • 上一篇    下一篇

rhHSP110毕赤酵母工程菌的大规模发酵及产物纯化

韩 冬1,徐 煌2,张新民1,姜 爽3,张 婷1,关 铭4,颜炜群1   

  1. 1.吉林大学药学院生物工程教研室,吉林 长春 130021;2.嘉兴学院医学院生物化学教研室,浙江 嘉兴 314001;3.北华大学药学院药物分析教研室,吉林 吉林 132001;4.吉林大学药学院药物分析教研室,吉林 长春 130021
  • 收稿日期:2007-12-26 修回日期:1900-01-01 出版日期:2008-05-28 发布日期:2008-05-28
  • 通讯作者: 关 铭,颜炜群

Large-scale fermentation and purification of rhHSP110 in Pichia pastoris

HAN Dong1,XU Huang2, ZHANG Xin-min1, JIANG Shuang3,ZHANG Ting1,GUAN Ming4, YAN Wei-qun1   

  1. 1.Department of Bioengineering, School of Pharmacy, Jilin University,Changchun 130021,China;2.Department of Biochemistry, Medical College of Jiaxing Univeristy,Jiaxing 314001,China;3.Department of Drug Analysis, School of Pharmacy, Beihua University,Jilin 132001,China;4.Department of Drug Analysis, School of Pharmacy, Jilin University,Changchun 130021,China
  • Received:2007-12-26 Revised:1900-01-01 Online:2008-05-28 Published:2008-05-28
  • Contact: GUAN Ming, YAN Wei-qun

摘要: 目的:探讨重组人HSP110(rhHSP110)毕赤酵母工程菌在80 L发酵罐中大规模发酵的工艺及发酵产物rhHSP110的纯化方法。方法:在摇瓶中制备rhHSP110工程菌种子2 L,将种子接种到80 L发酵罐中,采用补料分批培养方式对工程菌进行高密度发酵。控制和优化各种发酵条件,经历72 h后结束发酵。将发酵液离心,经阳离子交换层析对上清中的表达产物进行纯化。结果:控制发酵温度为30℃ ,pH值为4.2,溶氧值为20%以上,在酵母细胞湿重达到200 g•L-1时开始甲醇诱导表达,72 h后结束发酵。发酵上清通过阳离子交换 层析纯化后获得纯度为80%的rhHSP110,产量为500 mg•L-1。结论:rhHSP110酵母工程菌在80 L发酵罐高密度发酵成功,为rhHSP110的产业化生产及临床研究了奠定基础。

关键词: 毕赤酵母, 发酵

Abstract: Abstract:Objective To study large-scale fermentation of recombinant human HSP110(rhHSP110) in Pichia pastoris, and the purification of expressed target protein in Pichia pastoris.Methods rhHSP110(2 L) was prepared in shake flask.Using fed-batch fermentation,the high-density fermentation of genetically engineered Pichia pastoris was processed in a 80 L bioreactor.After induction for 72 h, the target protein was purified by SP Sepharose XL.Results The fermentation temperature was set at 30℃,the pH value was 4.2, and the DO was kept over 20%.When the wet weight of the cells reached 200 g•L-1, the methanol-induced phase was initiated.By cation exchange chromatography it was possible to purify the rhHSP110 produced in Pichia pastoris, and a yield of about 500 mg•L-1 was reached.Conclusion The success of large-scale fermentation lays a foundation for mass production and clinical applications of rhHSP110.

Key words: Pichia, fermentation

中图分类号: 

  • Q78