CUT&Tag可以恢复高达ENCODE ChIP-seq基因素乙化峰值的一半
Leyla Abbasova1,2, Paulina Urbanaviciute3,4, Di Hu1,2
1UK Dementia Research Institute at Imperial College London, London, UK.
Nature communications
|March 28, 2025
概括
目标和标记下的切割 (CUT&Tag) 提供了敏感的DNA-蛋白相互作用的现场分析. 这项研究将CUT&Tag与ChIP-seq进行比较,发现它回忆起54%的已知峰值,并确定了类似的功能丰富物.
科学领域:
- 分子生物学分子生物学
- 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.
背景情况:
- 染色体免疫沉,其次是下一代测序 (ChIP-seq) 是分析DNA-蛋白相互作用的标准方法.
- 目标和标记下的切割 (CUT&Tag) 是一种新兴的高灵敏度技术,用于这些相互作用的现场分析.
- 缺乏全面的基准测试阻碍了CUT&Tag协议的广泛采用和优化.
研究的目的:
- 为了全面评估和比较CUT&Tag的性能,以分析基因组素修饰的情况.
- 将CUT&Tag的结果与已建立的ChIP-seq数据集进行比较,特别是K562细胞中的H3K27ac和H3K27me3.
- 为 CUT&Tag 实验建立一个最佳的工作流和分析框架.
主要方法:
- 在K562细胞中对CUT&Tag数据集与ENCODE ChIP-seq对H3K27ac和H3K27me3的配置文件进行比较.
- 利用多个新的和已发布的CUT&Tag数据集进行可靠的评估.
- 测试了峰值调用算法MACS2和SEACR,确定了用于CUT&Tag数据分析的最佳参数.
主要成果:
- 对于已知的ENCODE ChIP-seq峰值,CUT&Tag实现了H3K27ac和H3K27me3.3的平均回忆率为54%.
- 由CUT&Tag识别的峰值与ENCODE ChIP-seq.q.识别的最强峰值相对应.
- 与ChIP-seq.峰值相比,CUT&Tag识别的峰值表现出类似的功能和生物丰富.
结论:
- CUT&Tag是一种敏感且可靠的基因组修饰分析方法,与ChIP-seq.相似.
- 该研究为评估CUT&Tag方法和优化实验设计和数据分析提供了一个系统的框架.
- 这项工作促进了CUT&Tag在表观基因组研究中的更广泛应用.
更多相关视频
24:02The ChroP Approach Combines ChIP and Mass Spectrometry to Dissect Locus-specific Proteomic Landscapes of Chromatin
Published on: April 11, 2014
05:52Histone Modification Screening using Liquid Chromatography, Trapped Ion Mobility Spectrometry, and Time-Of-Flight Mass Spectrometry
Published on: January 12, 2024
相关概念视频
02:32Histone Modification
The histone proteins have a flexible N-terminal tail extending out from the nucleosome. These histone tails are often subjected to post-translational modifications such as acetylation, methylation, phosphorylation, and ubiquitination. Particular combinations of these modifications form “histone codes” that influence the chromatin folding and tissue-specific gene expression.
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone deacetylase,...
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone deacetylase,...
02:25Spreading of Chromatin Modifications
The histone proteins in the nucleosomes are post-translationally modified (PTM) to increase or decrease access to DNA. The commonly observed PTMs are methylation, acetylation, phosphorylation, and ubiquitination of lysine amino acids in the histone H3 tail region. These histone modifications have specific meaning for the cell. Hence, they are called "histone code". The protein complex involved in histone modification is termed as "reader-writer" complex.
Writers
The writer is an enzyme that can...
Writers
The writer is an enzyme that can...
02:36Chromatin Immunoprecipitation- ChIP
Chromatin immunoprecipitation, or ChIP, is an antibody-based technique used to identify sites on DNA that bind to transcription factors of interest or histone proteins. It also helps determine the type of histone modifications such as acetylation, phosphorylation, or methylation.
Types of ChIP
ChIP can be divided into two types - X-ChIP and N-ChIP. X-ChIP involves in vivo cross-linking of histones and regulatory proteins to DNA, fragmenting the DNA by sonication, and isolating the protein-DNA...
Types of ChIP
ChIP can be divided into two types - X-ChIP and N-ChIP. X-ChIP involves in vivo cross-linking of histones and regulatory proteins to DNA, fragmenting the DNA by sonication, and isolating the protein-DNA...
02:32Histone Modification
The histone proteins have a flexible N-terminal tail extending out from the nucleosome. These histone tails are often subjected to post-translational modifications such as acetylation, methylation, phosphorylation, and ubiquitination. Particular combinations of these modifications form “histone codes” that influence the chromatin folding and tissue-specific gene expression.
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone deacetylase,...
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone deacetylase,...