Base specific cleavage of methylation-specific amplification products in combination with mass analysis
    7.
    发明授权
    Base specific cleavage of methylation-specific amplification products in combination with mass analysis 有权
    甲基化特异性扩增产物的碱基特异性切割与质量分析相结合

    公开(公告)号:US09249456B2

    公开(公告)日:2016-02-02

    申请号:US11089805

    申请日:2005-03-24

    IPC分类号: C12Q1/68

    摘要: Methods, combinations and kits are provided for identifying the methylation state of a target nucleic acid molecule, the methylation state of a nucleotide locus in a target nucleic acid molecule, or for identifying the locus of one or more methylated or unmethylated nucleotides in a target nucleic acid molecule. Methylation state identification is performed by treating a methylated target nucleic acid molecule with a reagent that modifies one or more nucleotides in the target nucleic acid molecule as a function of the methylation state of the target nucleic acid molecule, methylation specifically amplifying treated target nucleic acid molecule, fragmenting amplified products, and detecting one or more fragments to thereby identify the methylation state of a target nucleic acid molecule, the methylation state of a nucleotide locus in a target nucleic acid molecule, or the locus of one or more methylated or unmethylated nucleotides in a target nucleic acid molecule.

    摘要翻译: 提供了用于鉴定靶核酸分子的甲基化状态,靶核酸分子中的核苷酸位点的甲基化状态或鉴定靶核酸中一个或多个甲基化或非甲基化核苷酸的位点的方法,组合和试剂盒 酸分子。 通过用靶核酸分子修饰一个或多个核苷酸的试剂处理甲基化靶核酸分子,作为靶核酸分子的甲基化状态的函数,特异性扩增处理的靶核酸分子的甲基化,进行甲基化状态鉴定 ,片段扩增产物,检测一个或多个片段,从而鉴定靶核酸分子的甲基化状态,靶核酸分子中的核苷酸位点的甲基化状态或一个或多个甲基化或非甲基化核苷酸的位点 靶核酸分子。

    Restriction endonuclease enhanced polymorphic sequence detection
    8.
    发明授权
    Restriction endonuclease enhanced polymorphic sequence detection 有权
    限制性内切核酸酶增强多态性序列检测

    公开(公告)号:US08722336B2

    公开(公告)日:2014-05-13

    申请号:US13481612

    申请日:2012-05-25

    IPC分类号: C12Q1/68 C12P19/34

    摘要: Provided in part herein is an improved method for the detection of specific polymorphic alleles in a mixed DNA population. The method comprises enriching the relative percentage of a given polymorphic allele that is exponentially amplifiable by PCR. Provided also are methods for selectively enriching target nucleic acid, for example, fetal nucleic acid in a maternal sample. In the case of detecting fetal nucleic acid in a maternal sample, a restriction enzyme is introduced that can discriminate between the alleles of a polymorphic site. In some embodiments, the maternal allele is digested and nucleic acid comprising the paternal allele is relatively enriched.

    摘要翻译: 本文部分提供了用于检测混合DNA群体中特定多态性等位基因的改进方法。 该方法包括富集通过PCR指数扩增的给定多态性等位基因的相对百分比。 还提供了选择性富集靶核酸例如母体样品中的胎儿核酸的方法。 在检测母体样品中的胎儿核酸的情况下,引入可以区分多态性位点的等位基因的限制酶。 在一些实施方案中,母体等位基因被消化,并且包含父系等位基因的核酸相对富集。