发明名称 |
METHYLATION ASSAY |
摘要 |
A method for detecting a methylated genomic locus is provided. In certain embodiments, the method comprises: a) treating a nucleic acid sample that contains both unmethylated and methylated copies of a genomic locus with an agent that modifies cytosine to uracil to produce a treated nucleic acid; b) amplifying a product from the treated nucleic acid using a first primer and a second primer, wherein the first primer hybridizes to a site in the locus that contain methylcytosines and the amplifying preferentially amplifies the methylated copies of the genomic locus, to produce an amplified sample; and c) detecting the presence of amplified methylated copies of the genomic locus in the amplified sample using a flap assay that employs an invasive oligonucleotide having a 3′ terminal G or C nucleotide that corresponds to a site of methylation in the genomic locus. |
申请公布号 |
US2015167099(A1) |
申请公布日期 |
2015.06.18 |
申请号 |
US201414539841 |
申请日期 |
2014.11.12 |
申请人 |
Exact Sciences Corporation |
发明人 |
Lidgard Graham P.;Domanico Michael J.;Allawi Hatim;Zou Hongzhi |
分类号 |
C12Q1/68 |
主分类号 |
C12Q1/68 |
代理机构 |
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代理人 |
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主权项 |
1. A method for detecting a methylated genomic locus, comprising:
a) treating a nucleic acid sample that contains both unmethylated and methylated copies of a genomic locus with an agent that modifies unmethylated cytosine to uracil to produce a treated nucleic acid; b) amplifying a product from said treated nucleic acid using a first primer and a second primer, wherein said first primer hybridizes to a methylated sequence in said locus and said amplifying preferentially amplifies said methylated copies of said genomic locus, to produce an amplified sample; and c) detecting the presence of amplified methylated copies of said genomic locus in said amplified sample using a flap assay that employs: i. an invasive oligonucleotide having a 3′ terminal G or C nucleotide that corresponds to a methylated cytosine in said genomic locus and ii. a flap oligonucleotide that comprises a G or C nucleotide at a position that corresponds to said methylated cytosine in said genomic locus. |
地址 |
Madison WI US |