在PMA诱导的NET形成过程中,了解人类初级中性粒细胞中复杂的染色质动态
Brandi Atteberry1, Benjamin P Berman1,2, Theresa K Kelly1
1Innovation Laboratory, Volition America, Carlsbad, CA, United States.
Frontiers in immunology
|November 11, 2024
概括
这项研究揭示了中性粒细胞外细胞陷 (NET) 形成期间的快速色素变化. 这些发现为治疗与NETosis相关的炎症性疾病提供了新的点.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 基因组学就是基因组学.
背景情况:
- 中性粒细胞是天生的免疫的关键,通过NETosis形成中性粒细胞外细胞陷 (NETs).
- NETosis对于感染控制至关重要,但也驱动诸如败血症和狼之类的炎症性疾病.
研究的目的:
- 在初级人类中性粒细胞中研究NET形成期间的染色质动态.
- 用ATAC-Seq.来描述依赖时间的染色质反应.
主要方法:
- 主要的人类中性粒细胞被博12-米里酸 (PMA) 刺激.
- ATAC-Seq方法适用于孤立的中性粒细胞,以评估染色质可访问性.
- 在90分钟的时间内,分析了染色体的可访问性.
主要成果:
- 染色质可访问性模式在所有捐赠者之间是一致的.
- 显著的染色质变化发生在30分钟内,持续变化长达90分钟.
- 可访问的监管区域与依赖NOX的NET形成路径相关.
结论:
- 这项研究增强了对NETosis期间染色质修饰的理解.
- 确定早期行动点可能有助于调节炎症条件下的NET形成.
相关概念视频
02:21Chromatin Packaging
Each human somatic cell contains 6 billion base-pairs of DNA. Each base-pair is 0.34 nm long, which means that each diploid cell contains a staggering 2 meters of DNA. How is such a long DNA strand packed inside a nucleus measuring only 10 - 20 microns in diameter?
The chromatin
In combination with specialized DNA binding protein called Histones, the DNA double helix forms a compact DNA: protein complex called chromatin. The chromatin itself is further compacted into higher-order structures.
The chromatin
In combination with specialized DNA binding protein called Histones, the DNA double helix forms a compact DNA: protein complex called chromatin. The chromatin itself is further compacted into higher-order structures.
01:32Chromatin Packaging
Each human somatic cell contains 6 billion base pairs of DNA. Each base pair is 0.34 nm long, meaning each diploid cell contains a staggering 2 meters of DNA. This long DNA strand is packed inside a nucleus measuring only 10-20 microns in diameter with the help of specialized DNA-binding proteins called histones. Together they form a compact DNA-protein complex called chromatin. The chromatin is further compacted into higher-order structures. The highest level of compaction is achieved during...