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临床干预和炎症信号形成了早期产后肺部的转录和细胞结构

Tristan Frum¹, Angeline Wu¹, Marcela S Ymayo¹

¹Department of Internal Medicine, Division of Gastroenterology and Hepatology, University of Michigan Medical School, Ann Arbor, MI, USA.

bioRxiv : the preprint server for biology

|November 24, 2025

概括

研究人员绘制了早期出生后人类肺部的地图,发现了2型 (AT2) 膜细胞的两个新状态. 这些状态受到炎症的影响,影响肺部发育和疾病.

科学领域:

肺部生物学肺部生物学
发展生物学发展生物学
细胞和分子生物学细胞和分子生物学

背景情况:

产后早期对于人类肺部发育和气体交换至关重要,但人们对此了解甚少.
膜2型 (AT2) 细胞对于肺部修复和恒温至关重要.

研究的目的:

为了创建一个全面的细胞图谱早期产后人类肺部.
识别和描述AT2细胞的新型转录状态.
研究影响AT2细胞状态的环境和临床因素及其在新生儿肺部疾病中的作用.

主要方法:

23个个体的肺组织 (0-2岁) 的单核RNA测序.
空间转录组学用于绘制细胞状态和.
有机体实验和临床数据分析 (德甲治疗).
针对新生儿肺部疾病的基准测试:支气管肺功能失调和肺间歇性糖原体病.

主要成果:

确定了两种新的,相互排斥的AT2细胞转录状态:一种与脂质代谢相关 (FMO5+) 和一种与炎症反应相关 (CFTR+).
AT2细胞状态占据着不同的,并与特定的纤维细胞亚型相互作用.
支持炎症的信号 (TNF-α,IL-1β) 促进CFTR+状态;抗炎性德甲 (Dex) 促进FMO5+状态.
新生儿肺部疾病显示AT2细胞状态平衡受损,细胞成熟受损.

结论:

早期产后肺部AT2细胞状态由炎症和抗炎信号动态调节.
这些发现将环境因素和临床干预与AT2细胞表型联系起来.
为了解新生儿肺部疾病和细胞发育提供了一个新的框架.

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