在单细胞和无细胞DNA中使用限制酶,DARESOME能够同时对多个DNA修饰进行分析
Ramya Viswanathan1,2, Elsie Cheruba1,2, Pui-Mun Wong3
1Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, Singapore 117583, Singapore.
Science advances
|September 15, 2023
概括
一种新的测定方法,DARESOME,同时测量DNA修饰5-甲基细胞素 (5mC) 和5-基甲基细胞素 (5hmC). 这种方法通过液体活检揭示了它们在基因调节,衰老和癌症检测中的作用.
科学领域:
- 表观遗传学和基因组学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 5-甲基细胞因子 (5mC) 和5-基甲基细胞因子 (5hmC) 是调节基因表达的关键表观遗传标记.
- 目前的方法难以同时量化5mC和5hmC,特别是在有限的样本中.
研究的目的:
- 开发一种用于5mC和5hmC同时进行定量分析的新型试验.
- 研究5mC和5hmC在生物过程中的作用和相互转换.
主要方法:
- 通过限制酶进行DNA分析,同时检测多个表观基因组状态 (DARESOME).
- 修改敏感的限制消化和顺序标签绑定.
- 在CCGG站点进行全基因组分析.
主要成果:
- DARESOME 能够同时量化未经修改的细胞因子,5mC 和 5hmC.
- 揭示了5mC和5hmC在基因表达中的对立作用以及它们在老鼠大脑衰老期间的相互转换.
- 在单细胞中证明了5hmC链偏差,反映了DNA复制.
- 启用了在液体活检中寻找癌症特征的无细胞DNA的整合性分析.
结论:
- DARESOME 是一种用于同时表观遗传分析的强大工具.
- 提供了关于表观遗传调节,衰老和非侵入性癌症诊断的见解.
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