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Process for high throughput DNA methylation analysis

  • US 7,112,404 B2
  • Filed: 12/10/2001
  • Issued: 09/26/2006
  • Est. Priority Date: 05/14/1999
  • Status: Expired due to Term
First Claim
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1. A method for detecting cytosine methylation and methylated CpG islands within a genomic sample of DNA comprising:

  • (a) contacting a genomic sample of DNA with a modifying agent that modifies unmethylated cytosine to produce a converted nucleic acid;

    (b) amplifying the converted nucleic acid by means of oligonucleotide primers in the presence of one or a plurality of specific oligonucleotide probes, wherein one or a plurality of the oligonucleotide primers or the specific probe(s) are capable of distinguishing between unmethylated and methylated nucleic acid, with the proviso that at least one oligonucleotide probe is a CpG-specific probe capable of distinguishing between unmethylated and methylated nucleic acid; and

    (c) detecting, in real-time during the amplification, the methylated nucleic acid based on amplification-mediated probe displacement.

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