期刊
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
卷 391, 期 5, 页码 1499-1507出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00216-008-1897-z
关键词
fluorescence polarization immunoassay; fluorescence polarization; high-throughput screening; food safety monitoring; environmental monitoring
Fluorescence polarization immunoassay (FPIA) is a homogeneous (without separation) competitive immunoassay method based on the increase in fluorescence polarization (FP) of fluorescent-labeled small antigens when bound by specific antibody. The minimum detectable quantity of FPIAs with fluorescein label (about 0.1 ng analyte) is comparable with chromatography and ELISA methods, although this may be limited by sample matrix interference. Because of its simplicity and speed, FPIA is readily automated and therefore suitable for high-throughput screening (HTS) in a variety of application areas. Systems that involve binding of ligands to receptor proteins are also susceptible to analysis by analogous FP methods employing fluorescent-labeled ligand and HTS applications have been developed, notably for use in candidate drug screening.
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