Allele-specific mutation detection assay using an enzyme-disabling agent
First Claim
1. A method of detecting a base at a pre-determined position in a nucleic acid molecule, which comprises performing enzymatic oligomer elongation reactions using base-specific detection oligomers, with each oligomer being specific for a particular base at the predetermined position, and comparing the enzymatic oligomer elongation reactions to determine which base is present at the position, wherein a protein degrading enzyme is present during the enzymatic oligomer elongation reactions at a concentration such that mismatched enzymatic elongation reactions are eliminated or reduced.
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Abstract
The present invention relates to a method of detecting a base at a pre-determined position in a nucleic acid molecule by performing enzymatic detection reactions using base-specific detection oligomers, where each oligomer is specific for a particular base at the predetermined position, and then comparing the enzymatic detection reactions to determine which base is present at the position, with an enzyme-disabling agent being present during the enzymatic detection reaction. In preferred embodiments the enzymatic detection reaction is an oligomer elongation extension reaction, catalysed by, among others, polymerase or ligase. Also disclosed are methods of performing the assay in a liquid phase and on microarrays.
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27 Claims
- 1. A method of detecting a base at a pre-determined position in a nucleic acid molecule, which comprises performing enzymatic oligomer elongation reactions using base-specific detection oligomers, with each oligomer being specific for a particular base at the predetermined position, and comparing the enzymatic oligomer elongation reactions to determine which base is present at the position, wherein a protein degrading enzyme is present during the enzymatic oligomer elongation reactions at a concentration such that mismatched enzymatic elongation reactions are eliminated or reduced.
Specification