申请人:Canberra Industries, Inc.
公开号:US05108893A1
公开(公告)日:1992-04-28
A xanthine oxidase enzyme system to provide long lived entities capable of being recognized by a chemiluminescent reagent is disclosed. In the examples provided, a specific binding pair ligand or analyte is coupled with xanthine oxidase, either directly or via a streptavidin bridge. Thereafter, the presence of an analyte can be determined by a chemiluminescent emission upon addition of a signal reagent comprising hypoxanthine, iron EDTA complex and luminol dissolved in barbital buffer. The resulting chemiluminescent signal is stable and detectable for many hours after initiation. The chemiluminescent xanthine oxidase system is particularly useful for immunoassays and DNA probe analysis.
本发明揭示了一种黄嘌呤氧化酶酶系统,可提供能够被化学发光试剂识别的长寿命实体。在所提供的示例中,特定的配对配体或分析物与黄嘌呤氧化酶结合,可以直接结合或通过链霉亲和素桥连。此后,通过添加包含次黄嘌呤、铁EDTA络合物和琥珀酸缓冲液中溶解的发光试剂,可以通过化学发光发射来确定分析物的存在。所得到的化学发光信号在启动后稳定且可检测多小时。化学发光黄嘌呤氧化酶系统特别适用于免疫分析和DNA探针分析。