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The use of DNA from archival dried blood spots with the Infinium HumanMethylation450 array

机译:使用Infinium HumanMethylation450阵列从档案干燥血斑中提取DNA

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Background Dried blood (Guthrie card) spots provide an efficient way to collect and store blood specimens. DNA from this source has been utilised for a number of molecular analyses including genome-wide association studies, but only few studies have tested the feasibility of using it for epigenetic applications, particularly at a genome-wide level. Results In this study, we demonstrate the successful use of DNA isolated from archived dried blood spots for the Infinium HumanMethylation450 Beadchip, along with DNA from matched frozen buffy coats. We obtained high quality and reproducible genome-wide DNA methylation profiles using both sample types. We also report high correlations (r > 0.9907) between DNA obtained from matched dried blood spots and frozen buffy coats, sufficient to distinguish between unrelated individuals. Conclusions We, thus, demonstrate that DNA from archived dried blood spots is suitable for genome-wide DNA methylation profiling.
机译:背景技术干血(Guthrie卡)斑点提供了一种收集和存储血液样本的有效方法。此来源的DNA已用于许多分子分析,包括全基因组关联研究,但只有极少数研究测试了将其用于表观遗传应用的可行性,特别是在全基因组水平。结果在这项研究中,我们证明了从Infinium HumanMethylation450 Beadchip的干血斑存档中分离的DNA以及匹配的冷冻白细胞层的成功应用。我们使用两种样品类型均获得了高质量且可重现的全基因组DNA甲基化谱图。我们还报告了从匹配的干血斑和冷冻的血沉棕黄层获得的DNA之间的高度相关性(r> 0.9907),足以区分无关的个体。结论因此,我们证明了来自已归档的干血斑的DNA适用于全基因组DNA甲基化分析。

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