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扩大前环素范式:组织纤维细胞是产生和抗血栓保护的关键地点

Maria Vinokurova¹, Maria Elisa Lopes-Pires¹, Neringa Cypaite¹

¹National Heart and Lung Institute, Imperial College London, United Kingdom (M.V., M.E.L.-P., N.C., F.S., B.A.-S., Y.E., J.A.M., N.S.K.).

Arteriosclerosis, thrombosis, and vascular biology

|October 12, 2023

概括

纤维细胞,不仅仅是血管,是前环素的关键生产者,这是一个重要的信号分子. 这一发现重新塑造了我们对前环素的理解.

科学领域:

心血管生物学心血管生物学
肺部医学肺部医学
细胞信号传输细胞信号传输

背景情况:

простациклин对于心血管健康和血栓形成的预防至关重要,在炎症和细胞生长中起着既定的作用.
目前的理解强调血管内皮作为前环素的主要来源.
非内皮细胞对前环素生产的贡献仍然被低估.

研究的目的:

研究非内皮细胞,特别是纤维细胞在前列环素生产中的作用.
为了比较肺组织与动脉组织中的前环素合成.
确定非内皮质前列腺素在抗血栓保护中的功能意义.

主要方法:

使用了新型内皮细胞特异性和纤维细胞特异性循环氧化酶 (COX) 和前环素合成酶淘汰赛小鼠模型.
从小鼠和人类肺组织中分离和分析了原始细胞.
通过免疫试验量化前列环素释放,并使用FeCl3诱导的动脉损伤模型评估血栓形成.

主要成果:

在动脉中,内皮细胞是前环素的主要来源.
在肺组织 (老鼠和人类) 中,前列腺素的产生在很大程度上独立于内皮和光滑肌细胞,纤维细胞是主要来源.
与大动脉内皮细胞相比,肺微血管内皮细胞表现出较低的前环素合成能力.
来自纤维细胞的前环素有助于抗血栓作用.

结论:

建立了一个新的范式,其中纤维细胞衍生的前列环素补充了内皮细胞衍生的前列腺素来调节血栓风险.
突出了纤维细胞前环素生产的系统意义,此前被低估了.
建议对理解与肺部疾病相关的心血管风险的潜在影响.

关键词:

内皮细胞是内皮细胞.纤维细胞的细胞.免疫测试是一种免疫测试.风险因素风险因素血栓形成的原因是血栓形成.

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