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科学家完成五种靶向DNA甲基组分析商业平台的比较
2022-06-05 10:08

英国伦敦大学学院Stephan Beck、Miljana Tani等研究人员合作完成五种靶向DNA甲基组分析商业平台的比较。该研究于2022年6月2日在线发表于国际一流学术期刊《自然—生物技术》。

研究人员对五种市售的靶向重亚硫酸盐测序(TBS)平台,三种基于杂交捕获的平台(安捷伦、罗氏和Illumina)和两种基于还原代表的平台(Diagenode和NuGen),在11个样本中进行了基准测试。两个样本还与Illumina和Oxford Nanopore平台的全基因组DNA甲基化测序进行了比较。研究人员评估了工作流程的复杂性、中靶/脱靶性能、覆盖率、准确性和可重复性。尽管所有平台都产生了稳健和可重复的数据,但覆盖的CpG位点数量和身份的重大差异使得研究人员很难比较不同平台上产生的数据集。
 
为了克服这一限制,研究人员应用了归因法,并显示它提高了互操作性,从平均10.35%(80万)到97%(760万)的共同CpG位点。这项研究为不同的甲基组特征使用哪一个TBS平台提供了指导,并提供了一个基于归因的协调解决方案,从而能够进行比较、综合分析。
 
据了解,TBS已经成为在碱基对分辨率下对人类甲基组进行低成本、有针对性分析的首选方法。
 
附:英文原文
 
Title: Comparison and imputation-aided integration of five commercial platforms for targeted DNA methylome analysis

Author: Tani, Miljana, Moghul, Ismail, Rodney, Simon, Dhami, Pawan, Vaikkinen, Heli, Ambrose, John, Barrett, James, Feber, Andrew, Beck, Stephan

Issue&Volume: 2022-06-02

Abstract: Targeted bisulfite sequencing (TBS) has become the method of choice for the cost-effective, targeted analysis of the human methylome at base-pair resolution. In this study, we benchmarked five commercially available TBS platforms—three hybridization capture-based (Agilent, Roche and Illumina) and two reduced-representation-based (Diagenode and NuGen)—across 11 samples. Two samples were also compared with whole-genome DNA methylation sequencing with the Illumina and Oxford Nanopore platforms. We assessed workflow complexity, on/off-target performance, coverage, accuracy and reproducibility. Although all platforms produced robust and reproducible data, major differences in the number and identity of the CpG sites covered make it difficult to compare datasets generated on different platforms. To overcome this limitation, we applied imputation and show that it improves interoperability from an average of 10.35% (0.8 million) to 97% (7.6 million) common CpG sites. Our study provides guidance on which TBS platform to use for different methylome features and offers an imputation-based harmonization solution that allows comparative, integrative analysis.

DOI: 10.1038/s41587-022-01336-9

Source: https://www.nature.com/articles/s41587-022-01336-9

Nature Biotechnology:《自然—生物技术》,创刊于1996年。隶属于施普林格·自然出版集团,最新IF:68.164
官方网址:https://www.nature.com/nbt/
投稿链接:https://mts-nbt.nature.com/cgi-bin/main.plex


本期文章:《自然—生物技术》:Online/在线发表

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