综合多组学揭示了蒙格病患者的炎症驱动的过度红细胞形成
bioRxiv : the preprint server for biology
|November 24, 2025
概括
慢性山病 (CMS) 涉及由于缺氧导致的红细胞过量产生. 我们的研究表明NFκB激活驱动这种情况,为高海拔疾病提供了一个新的治疗点.
科学领域:
- 基因组学就是基因组学.
- 分子生物学分子生物学
- 高海拔地区的生理学
背景情况:
- 蒙格病 (Monge's disease,CMS) 是一种慢性高海拔疾病,会导致过度的红细胞化 (EE),增加中风和心脏病发作的风险.
- 缺氧是CMS中EE的关键驱动因素,但潜在的分子机制仍然不完全理解.
研究的目的:
- 为了研究CMS患者的红状腺细胞中的转录和染色质可访问性变化.
- 阐明炎症信号通路,特别是NFκB在CMS中驱动EE中的作用.
主要方法:
- 在诱导多能干细胞 (iPSC) 衍生的红色素细胞上使用RNA测序 (RNA-seq) 和测量转化酶可访问染色体 (ATAC-seq) 的测序.
- 对CMS和非CMS受试者在正常和缺氧状态下的比较分析.
- 功能性实验涉及药理NFκB抑制和激活.
主要成果:
- 即使在正常状态下,CMS细胞也表现出高调节的炎症,压力和红色素形成程序,包括JAK/STAT信号传递.
- 缺氧放大了这些变化,激活了NFκB驱动的炎症信号和正规的HIF目标.
- 抑制NFκB减少了CMS细胞中的EE,而NFκB激活诱导了非CMS细胞中的EE,证实了其因果作用.
结论:
- 一个协调的染色体转录范式是CMS的基础,由炎症轴驱动.
- 缺氧诱导的NFκB激活加快了压力诱导的红色球结合,导致CMS中过度的红细胞形成.
- 准NFκB通路为在慢性山病中管理过度红细胞瘤的潜在治疗策略.
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