建立利用萤光素酶快速检测细胞活性的方法

Journal of East China Normal University(2012)

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Abstract
运用PCR的方法,从萤火虫萤光素酶基因载体pGL4.26扩增萤火虫萤光素酶基因片段,将其插入连接于原核表达载体pET24a中,构建重组表达载体pET24a-Luc.经酶切鉴定及序列分析后,将重组载体转化到表达菌株大肠杆菌BL21(DE3)中,获得阳性重组菌BL21/pET24a-Luc.IPTG诱导蛋白高效表达并通过镍柱亲和层析纯化萤火虫萤光素酶.该目的蛋白活性用Bright-Glo~(TM)试剂进行验证并用于建立一种基于测量ATP含量的检测细胞生物活性的方法.与传统的细胞生物活性检测试剂盒MTT,CCK-8以及Alamar Blue比较,该方法具有反应迅速、活力高、灵敏度好、生产方便的优点,具有实际应用的潜力.
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Key words
firefly luciferase,cell viability assay,protein purification,protein expression
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