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在联合低氧和炎症刺激下,血管内皮细胞单层的动态和功能变化
Kazuki Sone1,2, Ai Funatsu2,3, So Sampei4
1Graduate School of Biomedical Engineering, Tohoku University, 6-6-12 Aramaki-aza Aoba, Aoba-ku, Sendai, Miyagi, 980-8579, Japan.
Scientific reports
|December 10, 2025
概括
败血症包括影响内皮细胞 (ECs) 的炎症和缺氧. 脂聚糖 (LPS) 暴露调节了EC对缺氧的反应,揭示了毒症进展至关重要的复杂途径相互作用.
科学领域:
- * 细胞和分子生物学
- *生理学 *生理学
- * 病理生理学 病理生理学
背景情况:
- * 败血症的特征是炎症失调,微血栓和器官缺氧.
- *内皮细胞 (EC) 对炎症的反应已知,但氧和炎症的联合作用尚不清楚.
- *了解这些联合压力因素下的EC行为对于败血症病理学至关重要.
研究的目的:
- * 为了研究内皮细胞 (EC) 动力学和功能在同时低氧和脂多糖 (LPS) 暴露下.
- *阐明缺氧诱导因子1-alpha (HIF-1α) 和核因子-kappa B (NF-κB) 信号通路之间的相互作用.
- *使用先进的微流体技术建模与败血症相关的EC变化.
主要方法:
- *使用微流体装置来控制氧气度,并模拟缺氧条件.
- *使用粒子图像速度计量量量化集体细胞迁移.
- *通过光德克斯扩散评估单层透性,并测量粘附分子表达.
主要成果:
- *低氧降低了EC迁移速度,但LPS减弱了这一效应,表明低氧反应的调节.
- *低氧和LPS都增加了EC透性;LPS预条件显示部分抑制.
- *LPS增加了ICAM-1和VCAM-1的表达,VCAM-1在缺氧下变化,表明复杂的通路交叉.
- *NF-κB抑制显著降低了集体迁移和透性.
结论:
- * 联合低氧和LPS暴露诱导内皮细胞复杂的表型变化.
- * 在这些条件下,NF-κB通路在调解EC迁移和透性变化方面发挥着关键作用.
- * 这种体外模型有效地总结了败血症引起的EC功能障碍的关键方面,为治疗目标提供了洞察力.
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