免疫细胞在细胞因子和内毒素介导的内皮透气性中发挥着关键作用
Patricia Gogesch1, Samira Ortega Iannazzo1, Nicole Rupp1
1Division of Immunology, Paul-Ehrlich-Institut, Langen, Germany.
PloS one
|August 14, 2025
概括
血管泄漏 (VL) 机制复杂,内皮细胞激活并不总是导致透性增加. 免疫细胞相互作用对于触发VL至关重要,这取决于特定的刺激,突出显示各种免疫介导途径.
科学领域:
- 内皮细胞生物学 内皮细胞生物学
- 免疫学 免疫学 免疫学
- 病理生理学 病理生理学
背景情况:
- 血管泄漏 (VL) 是一种严重的疾病,死亡率高,通常与败血症,细胞因子风暴和免疫疗法有关.
- 驱动VL的精确机制,特别是内皮细胞 (EC) 激活和透性变化,仍然不完全理解.
- 现有的研究表明,各种化合物会影响EC激活,但与增加血管透性的直接联系并不总是清楚的.
研究的目的:
- 研究16种不同的刺激对人静脉内皮细胞 (HUVEC) 激活,活力和细胞因子分泌的直接影响.
- 评估这些刺激如何影响HUVEC的相对透性,无论是单独的还是与外围血液单核细胞 (PBMC) 共同培养的.
- 阐明免疫细胞相互作用在调解刺激诱导的血管泄漏中的作用.
主要方法:
- 用16种刺激对待HUVECs,并分析它们的激活标记 (ICAM-1,VCAM-1,E-selectin),活力和细胞因子产生 (IL-8,MCP-1,IL-6).
- 使用跨井测定测量相对HUVEC透性,与或没有共同培养的PBMCs.
- 具体的刺激包括细胞因子 (IL-1β,TNF-α),细胞因子尾酒 (SNTGN1412),血,LPS和VEGF.
主要成果:
- 在不同的刺激中,HUVEC激活显示了一个保存的标记模式 (ICAM-1,VCAM-1,E-selectin,IL-8,MCP-1,IL-6).
- 强烈的激活和降低活力发生在IL-1β,TNF-α,SNTGN1412,血栓和LPS.
- 只有血栓素,SNTGN1412和VEGF直接增加了HUVEC的透性;IL-1β和LPS需要PBMC来诱导透性,而TNF-α甚至没有诱导PBMC的透性.
结论:
- 直接激活HUVEC并不总是导致血管透率增加或显著的细胞因子释放.
- 内皮细胞和免疫细胞 (PBMCs) 之间的相互作用对于诱导血管泄漏至关重要,但这种效应依赖于刺激.
- 了解这些独特的VL免疫介导途径对于开发向疗法和提高免疫疗法的安全性至关重要.
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