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    • 6. 发明申请
    • CARRY-OVER PROTECTION IN ENZYME-BASED DNA AMPLIFICATION SYSTEMS TARGETING METHYLATION ANALYSIS
    • 基于酶的DNA扩增系统的携带保护靶向甲基化分析
    • WO2007141034A1
    • 2007-12-13
    • PCT/EP2007/005088
    • 2007-06-08
    • EPIGENOMICS AGTETZNER, ReimoDIETRICH, Dimo
    • TETZNER, ReimoDIETRICH, Dimo
    • C12Q1/68
    • C12Q1/6848C12Q2525/131C12Q2523/125
    • The invention refers to a method for providing a decontaminated template nucleic acid for enzymatic amplification reactions suitable for DNA methylation analysis. This method is characterized by the following steps: a) incubating a nucleic acid with a chemical reagent or an enzyme-containing solution, whereby the unmethylated cytosine bases are converted into uracil bases, b) mixing the template nucleic acid from step a) with the components required for an enzyme-mediated amplification reaction, including at least two oligonucleotides, whereby at least one of said oligonucleotides comprises i) at least one sequence part that hybridizes with a sequence of the template nucleic acid to be amplified, andii) at least one sequence part that constitutes a recognition site for a DNA cleaving enzyme that cleaves DNA downstream of said recognition site and c) adding to this mixture a DNA cleaving enzyme, which specifically binds to the at least one sequence part that is a recognition site, and d) incubating the mixture, whereby nucleic acids containing said recognition site for a DNA cleaving enzyme are degraded.
    • 本发明涉及一种用于提供适用于DNA甲基化分析的酶扩增反应的去污染模板核酸的方法。 该方法的特征在于以下步骤:a)将核酸与化学试剂或含酶溶液一起孵育,由此将未甲基化的胞嘧啶碱基转化成尿嘧啶碱基,b)将来自步骤a)的模板核酸与 酶介导的扩增反应所需的组分,包括至少两个寡核苷酸,其中至少一个所述寡核苷酸包含i)至少一个与待扩增的模板核酸序列杂交的序列部分,和ii)至少一个 构成用于切割所述识别位点下游的DNA的DNA切割酶的识别位点的序列部分,和c)向该混合物中加入特异性结合作为识别位点的至少一个序列部分的DNA切割酶,d )孵育混合物,由此含有用于DNA切割酶的所述识别位点的核酸被降解。