利用MethMotif工具包来描述甲基化敏感转录因子的特定环境特征和作用
Matthew Dyer1, Gastongay Siu1, Denis Thieffry2,3,4
1Division of BioMedical Sciences, Faculty of Medicine, Craig L. Dobbin Genetics Research Centre Memorial, University of Newfoundland, St. John's, NL, Canada.
Current protocols
|April 25, 2025
概括
本指南介绍了MethMotif平台,用于分析DNA甲基化如何影响转录因子 (TF) 结合,特别是形成二元体的氨酸拉链TF. 它有助于研究人员了解TF二分化和甲基化.
科学领域:
- 基因组学就是基因组学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 生物信息学是一种生物信息学.
背景情况:
- 转录因子 (TFs) 调节基因表达.
- 基因甲基化是影响基因调节的关键表观遗传修饰.
- 氨酸拉链TFs通常以二元形式结合DNA,这可能是通过DNA甲基化来调节的过程.
研究的目的:
- 介绍MethMotif平台,将TF结合位点 (TFBS) 动图与DNA甲基化数据集成.
- 为分析TF二元化和甲基化特异性结合模式提供协议,特别是对于氨酸拉链TFs.
- 为了使研究人员能够探索DNA甲基化如何影响TF结合特异性和基因调节网络.
主要方法:
- 使用MethMotif数据库来检索ChIP-seq和DNA甲基化数据.
- 使用TFregulomeR R包和Forked-TF R库进行分析.
- 与甲基化配置文件交叉的TFBS峰值区域,以生成甲基化信息的图案标志.
主要成果:
- 展示了用于识别TF二元化伙伴和联合结合行为的工作流.
- 视觉化了甲基化特异性TF动图和特征化了氨酸-拉链TF结合模式.
- 在K562单元格中提供了CEPBPB的案例研究,说明了平台的实用性.
结论:
- 该MethMotif平台提供了一种全面的方法来研究TF-DNA甲基化相互作用.
- 研究人员可以深入了解受TF二元化和DNA甲基化影响的细胞类型特定基因调节.
- 提供的协议是可访问的,并促进复杂的基因调节机制的调查.
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