Use of cellular glucose-6-phosphate dehydrogenase for cell quantitation: applications in cytotoxicity and apoptosis assays

被引:34
作者
Batchelor, RH [1 ]
Zhou, MJ [1 ]
机构
[1] Mol Probes Inc, Eugene, OR 97402 USA
关键词
fluorescence; microplate; G6PD; cell death; resorufin; resazurin; high-throughput;
D O I
10.1016/j.ab.2004.02.007
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
A fluorescence-based microplate assay was developed to quantity cell death based upon the measurement of glucose-6-phosphate dehydrogenase (G6PD) activity. G6PD is a cytosolic enzyme and leaks from cells when plasma membrane integrity is compromised. In this assay, cell death is measured by correlating the activity of extracellular G6PD to the reduction of resazurin to the fluorescent product, resorufin, via a coupled-enzyme reaction. The coupled-enzyme reaction permits rapid signal amplification front small amounts of G6PD, an advantage over assays based on resazurin alone. This assay is rapid, nontoxic, and amenable to high-through-put screening. The assay has a Z' factor of 0.78. (C) 2004 Elsevier Inc. All rights reserved.
引用
收藏
页码:35 / 42
页数:8
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