Enhanced sensitivity in enzymatic poly reactant channeling...

Details Enhanced sensitivity in enzymatic poly reactant channeling... Enhanced sensitivity in enzymatic poly reactant channeling...

G - Physics

01

N

167/45

G01N 33/573 (2006.01) G01N 33/535 (2006.01) G01N 33/542 (2006.01) G01N 33/58 (2006.01)

Patent

CA 1230289

ABSTRACT OF THE DISCLOSURE Improved sensitive immunoassays are provided involving channeling involving one, usually two enzymes, where the enzymes are related by the product of one enzyme being the substrate of the other enzyme. A dispersed aggregation is formed in the assay medium of (1) the analyte, (2) one of the enzymes bound to a second binding member ("SBM") (enzyme - SBM conjugate) which conjugate is non-covalently bound to a first binding member ("FBM"), and (3) a multiplied amount of the other enzyme bound in the complex. The large amount of enzyme or reactant in the complex is achieved by having a multiplicity of linkages binding the enzyme or reactant directly or indirectly to FBMs. The enzyme channeling provides for a detectable signal which can be related to the amount of analyte in the medium.

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