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mIL-4昆虫表达载体pIZT/V5-His的构建及其高效表达

孙延波,李菁华,史红艳   

  1. 吉林大学基础医学院病原生物学教研室,吉林 长春130021
  • 收稿日期:2005-03-09 修回日期:1900-01-01 出版日期:2006-03-28 发布日期:2006-03-28

Construction and expression of inset expression vector pIZT/V5-His harboring mIL-4

SUN Yan-bo, LI Jing-hua,SHI Hong-yan   

  1. Department of Pathogenobiology, School of Basic Medical Sciences, Jilin University, Changchun 130021, China
  • Received:2005-03-09 Revised:1900-01-01 Online:2006-03-28 Published:2006-03-28

摘要: 目的:构建昆虫表达载体pIZT/V5-His的基础上,建立能稳定高效表达mIL-4的昆虫细胞系。方法:PCR体外扩增mIL-4, 将目的基因mIL-4和昆虫表达载体pIZT/V5-His用EcoRI 和XbaI 做双酶切, 通过T4 DNA连接酶构建成含mIL-4目的基因的表达载体pIZT/V5-His-IL4。采用脂质体法将重组DNA转染到生长良好的昆虫细胞Sf9中。转染后的第3天, 用ELISA方法检测转染细胞的培养上清中分泌型蛋白mIL-4的含量。结果:转染后的昆虫细胞Sf9能产生大量的mIL-4, 含量可达1 mg·L-1, 明显高于对照组(0.003 mg·L-1)。结论:昆虫表达载体pIZT/V5-His 可用于mIL-4的高效表达。

关键词: 昆虫细胞Sf9, 基因表达, 遗传载体

Abstract: Objective To establish stable insect cell line expressing mIL-4 on the basis of construction of inset expression vector pIZT/V5-His. Methods Amplified mIL-4 and pIZT/V5-His were treated with EcoRI and XbaI, and mIL-4 were ligated into pIZT/V5-His vector using T4 DNA ligase. Sf9 cells were transfected with recombinant DNA and ELISA was employed to detect soluble mIL-4 production by transfected Sf9 cells. Results Transfected Sf9 cells could significantly produce mIL-4 (1 mg·L-1) compared with control group(0.003 mg·L-1) . Conclusion Inset expression vector pIZT/V5-His is an ideal expression vector for mIL-4 production in transfected cells.

Key words: insect cell Sf9, gene expression, genetic vectors

中图分类号: 

  • Q786