Bridge immunoassay

Details Bridge immunoassay Bridge immunoassay

1993-02-04

1994-03-22

Nucker, Christine M.

Chemistry: molecular biology and microbiology

Measuring or testing process involving enzymes or...

Involving virus or bacteriophage

435 71, 435 75, 435 79, 435 792, 435 793, 435 794, 435 795, 435961, 435971, 436501, 436536, 436538, 436540, G01N 33569, G01N 33543, G01N 3353, G01N 33536

Patent

active

052963470

ABSTRACT:
Disclosed is a novel immunoassay methodology, bridge immunoassay, which employs a primary free solution analyte/receptor binding reaction, for example, in a sandwich-type format (two or more analyte receptors), in a competitive format (single analyte receptor) or in a related immunoassay format, and a universal solid phase and capture system. The universal capture system comprises a first receptor bound to a solid phase and a bridge receptor (a second receptor) which functions both as a ligand for said bound first receptor and as a receptor for a ligand conjugated to a sample analyte receptor (a third receptor). The bridge receptor is used to immobilize the immunocomplexes formed free in solution by linking them to the bound first receptor. The universal capture system can be used for assays for any analyte as the bridge receptor binds to a ligand, for example, a hapten or binding protein, conjugated to the sample analyte receptor. Methods, compositions and test kits for such bridge immunoassays are provided.

REFERENCES:
patent: 4299916 (1981-11-01), Litman et al.
patent: 4808521 (1989-02-01), Allen

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