The invention provides compounds, compositions, methods, substrates, and kits useful for analyzing the metabolic activity in cells, tissue, and animals and for screening test compounds for their effect on cytochrome P450 activity. In particular, a one-step and two-step methods using luminogenic molecules, e.g. luciferins or coelenterazines, that are cytochrome P450 substrates and that are also bioluminescent enzyme, e.g., luciferase, pro-substrates are provided. The present method further provides a method for stabilizing and prolonging the luminescent signal in a luciferase-based assay using luciferase stabilizing agents such as reversible lucifetrase inhibitors.
本发明提供的化合物、组合物、方法、底物和试剂盒可用于分析细胞、组织和动物的新陈代谢活性,以及筛选测试化合物对细胞色素 P450 活性的影响。特别是提供了一种使用发光分子(如
荧光素或
腔肠素)的一步法和两步法,这些发光分子是细胞色素 P450 底物,同时也是
生物发光酶(如
荧光素酶)的原底物。本方法进一步提供了一种使用
荧光素酶稳定剂(如可逆性
荧光素酶抑制剂)稳定和延长基于
荧光素酶的检测中的发光信号的方法。