基质子修饰的动态变化与差异性染色素相互作用有关.
1Department of Bioinformatics, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing 211166, China.
Genes
|August 29, 2024
概括
免疫细胞中的染色体相互作用在病毒和干扰素反应期间动态变化. 基质子修饰,而不是结构蛋白,驱动这些动态色素相互作用.
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.
- 分子生物学分子生物学
背景情况:
- 细胞基因组组织依赖于染色质域和长距离相互作用.
- 结构性蛋白质 (例如,CTCF,凝聚素) 和基因组修饰介导这些相互作用.
研究的目的:
- 研究人类巨细胞在流感A病毒和干扰素β刺激后对染色质相互作用的动态调节.
- 了解质子修饰和结构蛋白在微分色素相互作用 (DCI) 中的作用.
主要方法:
- 从人类单细胞衍生的巨细胞发表的Hi-C和ChIP-seq数据集的分析.
- 在特定的治疗条件下识别差异性染色体相互作用 (DCI).
- 动机扫描用于识别与基因素修饰变化相关的潜在蛋白质结合部位.
主要成果:
- 在A型流感病毒和干扰素β治疗细胞中分别鉴定了206个和127个DCI.
- 在DCI中,CTCF和RAD21的结合部位在很大程度上保持稳定,而五种组蛋白修饰 (H3K4me3,H3K27ac,H3K36me3,H3K9me3,H3K27me3) 显示出显著的变化.
- 与CTCF/RAD21相比,在DCI内,基质子修改表现出更为显著的变化,而在DCI外的一些修改显示出更大的变化.
- 鉴定出PRDM9,ZNF384和STAT2是潜在的调节剂,与DCI中的基因组修饰动态相关.
结论:
- 与CTCF和RAD21相比,质子修饰在免疫反应期间调节差异性染色质相互作用方面起着更为动态的作用.
- 该研究提供了对染色质结构的动态调节及其与表观遗传修饰的关系的见解.
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