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    • 4. 发明申请
    • METHYLATION ASSAY
    • 甲基化测定
    • WO2012067830A2
    • 2012-05-24
    • PCT/US2011058997
    • 2011-11-02
    • EXACT SCIENCES CORPZOU HONGZHILIDGARD GRAHAM PDOMANICO MICHAEL JALLAWI HATIM
    • ZOU HONGZHILIDGARD GRAHAM PDOMANICO MICHAEL JALLAWI HATIM
    • C12Q1/68
    • C12Q1/6886C12Q1/6827C12Q2600/154C12Q2521/301C12Q2523/125C12Q2561/109
    • 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.
    • 提供了一种检测甲基化基因组座位的方法。 在某些实施方案中,所述方法包括:a)将含有基因组座位的非甲基化和甲基化拷贝的核酸样品用修饰胞嘧啶至尿嘧啶的试剂处理以产生经处理的核酸; b)使用第一引物和第二引物扩增来自经处理的核酸的产物,其中第一引物与含有甲基胞嘧啶的位点的位点杂交,并且扩增优先扩增基因组基因座的甲基化拷贝,以产生扩增的 样品; 和c)使用采用具有对应于基因组基因座中的甲基化位点的3'末端G或C核苷酸的侵入性寡核苷酸的皮瓣测定来检测扩增样品中扩增的基因组座位的扩增的甲基化拷贝的存在。