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首页> 外文期刊>Nucleic Acids Research >COBRA - A SENSITIVE AND QUANTITATIVE DNA METHYLATION ASSAY
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COBRA - A SENSITIVE AND QUANTITATIVE DNA METHYLATION ASSAY

机译:COBRA-灵敏而定量的DNA甲基化测定

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We report here on a quantitative technique called COBRA to determine DNA methylation levels at specific gene loci in small amounts of genomic DNA. Restriction enzyme digestion is used to reveal methylation-dependent sequence differences in PCR products of sodium bisulfite-treated DNA as described previously. We show that methylation levels in the original DNA sample are represented by the relative amounts of digested and undigested PCR product in a linearly quantitative fashion across a wide spectrum of DNA methylation levels. In addition, we show that this technique can be reliably applied to DNA obtained from microdissected paraffin-embedded tissue samples. COBRA thus combines the powerful features of ease of use, quantitative accuracy, and compatibility with paraffin sections.
机译:我们在这里报告了一种称为COBRA的定量技术,用于确定少量基因组DNA中特定基因位点的DNA甲基化水平。如前所述,限制性内切酶消化用于揭示亚硫酸氢钠处理的DNA的PCR产物中甲基化依赖性的序列差异。我们显示原始DNA样品中的甲基化水平由在广泛的DNA甲基化水平范围内以线性定量方式消化和未消化的PCR产物的相对量表示。此外,我们表明,该技术可以可靠地应用于从显微解剖石蜡包埋的组织样品中获得的DNA。因此,COBRA结合了强大的功能,易于使用,定量准确性以及与石蜡切片的兼容性。

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