巨细胞增生是通过由RBPJ调解的表观遗传修饰来控制的
bioRxiv : the preprint server for biology
|November 24, 2025
概括
这项研究揭示了表观遗传变化如何调节细胞化 (细胞化的细胞清除). 免疫球蛋白卡帕J区域的重组信号结合蛋白 (RBPJ) 抑制H3K9me3,增强血细胞分裂并减少炎症.
科学领域:
- 免疫学 免疫学 免疫学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 细胞生物学 细胞生物学
背景情况:
- 乙细胞增生对于解决炎症和维持组织平衡至关重要.
- 调控巨细胞介导的表观遗传机制仍然在很大程度上是未知的.
研究的目的:
- 为了研究表观遗传变化的作用在巨介导的细胞分裂.
- 阐明免疫球蛋白卡帕J区域 (RBPJ) 复合信号结合蛋白在调节细胞分裂和炎症中的功能.
主要方法:
- 用核酶 (CUT&RUN) 测序识别基因组范围内的表观遗传变化.
- 利用来自各种组织 (动脉样斑块,膜,腹膜,骨髓) 的小鼠和人类初级巨细胞.
- 研究了诺奇信号抑制和激活对乙细胞的影响.
主要成果:
- 在细胞分裂期间,在巨细胞中观察到全基因组抑制H3K9me3 (异染色素标记).
- 在多种巨类型中,RBPJ抑制了H3K9me3,增强了细胞分裂,并抑制了炎症.
- 通过降低H3K9me3在它们的促进体上,RBPJ通过actin聚合促进了Stard13和Arsg的升级调节,通过actin聚合促进了效细胞化.
- 抑制SUV39H1/H2甲基转移酶增强了RBPJ中淘汰性巨细胞的效细胞化.
结论:
- 表观遗传调节,特别是由RBPJ介导的H3K9me3抑制,在细胞形成中起着至关重要的作用.
- 通过RBPJ介导的表观遗传变化对于组织巨细胞的效细胞化和炎症解消至关重要.
- 这项研究揭示了一种新的表观遗传控制效细胞分裂的机制,这对炎症性疾病有影响.
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