Homogeneous diagnostic assay method utilizing simultaneous targe

Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving nucleic acid

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435 41, 935 76, 935 77, 935 78, C12Q 168, C12P 100, C12N 1500

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active

058586652

ABSTRACT:
The present invention relates to a method, kit and reagent composition for determining the presence of a target nucleic acid in a sample using a two-stage target cycling reaction. During stage 1 of the reaction, the target nucleic acid hybridizes with a probe nucleic acid to effectuate release of an activator into the assay medium. During stage 2 of the reaction, a target analog-anchor complex is cleaved by the activator, which accomplishes the dual purpose of releasing the target analog into the assay medium, and the initiation of signal generation. The released target analog then restarts the cyclic reaction by binding to a second probe, which effectuates release of a second activator, and so on. This cyclic reaction gives rise to an increase in the amount of signal generated from a single target nucleic acid molecule in the sample, which greatly enhances the level of target detection that can be expected.

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