CUT&RUN可疑的基因组问题区域列表
Anna Nordin1,2, Gianluca Zambanini1,2, Pierfrancesco Pagella1,2
1Wallenberg Centre for Molecular Medicine, Linköping University, Linköping, Sweden.
Genome biology
|August 10, 2023
概括
研究人员确定了特定于切割在目标下和释放使用核酶 (CUT&RUN) 实验的有问题的高信号区域. 删除这些区域可以提高全基因组结合特征分析的可靠性.
科学领域:
- 表观遗传学和基因组学
- 分子生物学技术 分子生物学技术
背景情况:
- 在目标下切割和使用核酶释放 (CUT&RUN) 是绘制全基因组结合配置文件的流行的方法.
- 现有的 ChIP-seq 的 ENCODE 黑名单解决了假阳性,但由于生化和数据分析的差异,它们不能直接适用于 CUT&RUN.
- CUT&RUN生成了自己的一组不需要的高信号区域,需要特定的识别.
研究的目的:
- 在人类和小鼠基因组中识别和编译CUT&RUN特定的可疑区域.
- 为了证明这些可疑地区的持久性,即使使用标准的峰值呼叫方法和删除黑名单.
- 为提高CUT&RUN数据分析的可靠性提供一种方法.
主要方法:
- 基于来自多个实验室和基因组 (人类和老鼠) 的负控制实验的CUT&RUN数据编制嫌疑人名单.
- 分析已公布的CUT&RUN数据,以评估不同峰值调用算法 (SEACR,MACS2) 和ENCODE黑名单使用的可疑区域的持续性.
- 使用重复的负控制实验进行实验验证,而不针对特定的蛋白质.
主要成果:
- 在人类和小鼠基因组的CUT&RUN数据中识别特定的可疑区域.
- 证明这些可疑区域始终被称为负控制的峰值,并且尽管存在标准分析管道,但仍然存在.
- 实验验证证证实,这些可疑名单捕获了超过80%的负控中确定的峰值.
结论:
- 可以识别有问题的,CUT&RUN特定的高信号区域,并编制成可疑名单.
- 删除这些可疑区域被提议作为一种方法,以显著提高在CUT&RUN实验中的峰值调用精度.
- 这种方法导致更可靠和值得信赖的全基因组结合性资料数据集.
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