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基于酶的新型减少表示方法,用于使用低投入的DNA甲基化概况
Qianli Liu1,2, Kathryn A Helmin1, Zachary D Dortzbach1
1Division of Pulmonary and Critical Care Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States.
Nucleic acids research
|June 30, 2025
概括
减少表示酶甲基化测序 (RREM-seq) 能够从低输入样本中准确地定制DNA甲基化概况. 这种方法克服了传统二硫酸盐测序的局限性,即使使用最小的DNA,也提供了更高的覆盖率和可靠的结果.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 基因组学就是基因组学.
- 分子生物学分子生物学
背景情况:
- 基于二硫酸盐的DNA甲基化测序方法可以降解DNA,特别是在低输入样本中,损害数据质量.
- 酶甲基化测序 (EM-seq) 提供了一种更少偏见的替代方案,改善了基因组覆盖范围.
- 减少代表性的方法通过丰富CpG丰富的地区来提高效率和成本效益.
研究的目的:
- 为减少表示方法 (RREM-seq) 调整酶甲基化测序技术.
- 为了从低输入样本中实现DNA甲基化分析.
- 将RREM-seq性能与减少表示双硫酸盐测序 (RRBS) 进行比较.
主要方法:
- 开发并实施了减少表示EM-seq (RREM-seq) 协议.
- 使用不同数量的小鼠和人类DNA将RREM-seq与RRBS进行比较.
- 分析了小鼠T细胞群和人类临床样本中的DNA甲基化概况.
主要成果:
- 在<2 ng DNA的情况下,RRBS失败了,而RREM-seq成功地从1-25 ng DNA生成了库.
- 低输入的RREM-seq库显示了>10倍的监管基因组元素覆盖率比RRBS.
- 在严重的SARS-CoV-2肺炎患者中,RREM-seq检测到T细胞群之间的甲基化差异.
结论:
- RREM-seq是一种可靠的方法,用于低输入样本的DNA甲基化概况.
- 该技术提供单核酸分辨率和增强的基因组覆盖范围.
- RREM-seq适用于临床样本和推进表观遗传研究.
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