肺中的毛细血管内皮细胞亚型:发育性肺损伤的标志物和反应
Abhijeet Thakur1,2, Geremy Clair3, Liang Zhang4,5
1Brigham and Women's Hospital, Department of Pediatric Newborn Medicine, Boston, Massachusetts, United States.
American journal of respiratory cell and molecular biology
|August 22, 2025
概括
支气管肺功能障碍 (BPD) 涉及到肺部微血管生长的障碍. 这项研究确定了特定的细胞标志物,并揭示了新生儿肺损伤模型中的内皮细胞群和扩散.
科学领域:
- 肺部医学
- 发育生物学
- 细胞生物学
背景情况:
- 支气管肺功能障碍 (BPD) 是早产婴儿的慢性肺部疾病,其特征是微血管生长受损,阻碍了膜形成.
- 肺微血管内皮细胞 (ECs) 包含两个亚群:一般毛细血管 (gCap) 和气球细胞 (aCap) ECs.
研究的目的:
- 验证 gCap 和 aCap EC 的蛋白质标记物.
- 在肺部发育和BPD模型中调查 gCap 和 aCap EC 的丰度和扩散.
- 使用非人类灵长类 (NHP) 模型探索转化见解.
主要方法:
- 对 gCap (GPIHBP1,PLVAP,CD93) 和 aCap (CA4,HPGD) 标记物的蛋白质水平验证.
- 在发育过程中和BPD模型中分析小鼠和NHP肺部的EC标志物丰度和扩散.
- 使用NHP模型进行翻译相关性.
主要成果:
- 证实CA4和HPGD是特定的aCap标志物;非微血管EC中发现的Chap标志物.
- 在NHP肺部发育过程中,aCap标记的丰度增加;在BPD肺部,aCap标记下降,Chap标记增加.
- 与对照组相比,BPD肺部表现出改变的EC扩散,GCAP扩散增加.
结论:
- 在肺部发育过程中,GCAP和aCap EC存在不同的调节模式.
- BPD与肺微血管EC亚群的显著变化及其扩散有关.
- NHP模型为BPD病变和潜在的治疗点提供了有价值的翻译见解.
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