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    • 4. 发明授权
    • Nucleic acid detection assay
    • 核酸检测法
    • US07846693B2
    • 2010-12-07
    • US10570715
    • 2004-09-03
    • Douglas Spencer MillarJohn Robert MelkiGeorge L. Gabor Miklos
    • Douglas Spencer MillarJohn Robert MelkiGeorge L. Gabor Miklos
    • C12P19/34
    • C12Q1/6827C12Q2533/107C12Q2525/307C12Q2523/125C12Q2521/325
    • A method for determining the methylation status of a potential methylation site in genomic nucleic acid comprising treating genomic nucleic acid with an agent which modifies cytosine bases but does not modify 5methyl-cytosine bases under conditions to form a. modified nucleic acid template containing a potential methylation site; providing a first clamp containing a first capture sequence complementary to a region flanking one side of the potential methylation site in the modified nucleic acid template, providing a second clamp containing a second capture sequence complementary to a region flanking the other side of the potential methylation site in the modified nucleic acid template; allowing the first clamp and the second clamp to hybridise to the modified nucleic acid template; ligating the hybridised first and second clamps to form a probe spanning the potential methylation site in the modified nucleic acid template; digesting the modified nucleic acid template to obtain the probe; and detecting the probe and determining the methylation status of the potential methylation site in the modified genomic nucleic acid.
    • 一种确定基因组核酸中潜在的甲基化位点的甲基化状态的方法,其包括用修饰胞嘧啶碱基但不改变5个甲基胞嘧啶碱基的试剂处理基因组核酸。 含有潜在甲基化位点的修饰的核酸模板; 提供第一夹具,其含有与修饰的核酸模板中的潜在甲基化位点侧翼侧的区域互补的第一捕获序列,提供包含与潜在甲基化位点的另一侧侧翼区域互补的第二捕获序列的第二夹 在修饰的核酸模板中; 允许第一夹具和第二夹钳与修饰的核酸模板杂交; 连接杂交的第一和第二夹具以形成跨越修饰的核酸模板中的潜在甲基化位点的探针; 消化修饰的核酸模板以获得探针; 并检测探针并测定修饰基因组核酸中潜在甲基化位点的甲基化状态。