PEI介导的大规模基因瞬时转染研究进展

Progress of Research and Application of PEI-mediated Large-Scale Transient Transfection

基因重组蛋白具有巨大的商业和科研价值。近年来,大规模基因瞬时表达(large scale transient gene expression,TGE)技术的出现提供了一种相较于传统筛选稳定细胞株重组蛋白生产工艺而言更加高效(high efficient)和更加节约人力(labor consuming)、物力(cost effective)和时间(time consuming)的解决方案。通过基因瞬时表达技术,可以在短时间内获得毫克至克级别的在分子结构、理化特性和生物学功能等方面都接近于原始存在的蛋白质分子,可以满足细胞信号转导、新药筛选和临床前研究等药物研发前期的阶段对重组蛋白的巨大需求。因此,该技术成为当前研究的热点。阳离子聚合物-聚乙烯亚胺(PEI)是目前报道的工业化、大规模瞬时转染表达重组蛋白领域最广泛使用的基因载体和转染试剂。本文就近年来PEI介导的大规模瞬时转染的转染机理、宿主细胞选择以及转染优化措施等各方面的最新研究进展作一综述。

Large-scale gene transient transfection technology has developed in recent years because it is a new way to produce recombinant proteins which can be used in preclinical research and drug screening. Cationic polymers- Polyrthylenimine（PEI） has been the most commonly used gene delivery vector in large scale transient transfection for the advantage of time consuming, labor consuming and time consuming. This paper has reviewed the PEI-mediated large-scale transient transfection in the aspects of transfection mechanism, host cells and optimization measures.