在怀孕期间COVID-19感染的细胞外囊泡的表征
Ayelet Dangot1,2,3, Mor Zavaro1,3, Tali Hana Bar-Lev1
1Hematology Research Laboratory, Tel-Aviv Sourasky Medical Center, Tel Aviv, Israel.
Frontiers in cell and developmental biology
|August 10, 2023
概括
与健康的孕妇相比,来自COVID-19孕妇的细胞外囊泡 (EVs) 显示炎症减少,凝血没有增加. 这表明,孕妇的EV可能会在怀孕期间防止严重的COVID-19.
科学领域:
- 免疫学 免疫学 免疫学
- 产科 产科 产科 产科 产科
- 病毒学 病毒学
背景情况:
- SARS-CoV-2 感染可能导致严重的炎症,发病率和死亡率,孕妇患者的风险略有增加.
- 怀孕涉及高凝血和免疫抑制,但大多数孕妇都会经历轻度的COVID-19.
- 孕产妇细胞外囊泡 (EVs) 可能在感染期间调节孕产妇和胎儿之间的环境.
研究的目的:
- 调查COVID-19的妇女怀孕第三个月期间释放的EVs的特征.
- 探索母体EVs在怀孕期间COVID-19疾病过程中的作用.
主要方法:
- 一项前性研究分析了健康的非孕妇 (NP),健康的孕妇 (HP) 和COVID-19阳性孕妇 (CoV-P) 的血液样本.
- EVs的表征,包括度,表面标记物表达 (CD63,ACE-2,TMPRSS2,CD62P,CD144),细胞因子含量和凝血标记物 (D-Dimer,纤维素原).
- 评估疾病进程和怀孕结果,样本量限制需要不同的分析子集.
主要成果:
- 91%的COVID-19孕妇有良好的妊娠结果.
- 在HP中,EV度高于NP,在Cov-P中低于HP.
- 与NP相比,HP和Cov-P的EV显示CD63表达增加.
- 在HP EVs和NP EVs中细胞因子含量增加;在CoV-P EVs和HP EVs中IL-2和IL-6降低.
- 在NP EVs中,CD8+ T细胞标志物比HP和Cov-P EVs低.
- 血小板激活标志物 (CD62P) 在Cov-P EVs中高于NP和HP EVs.
- 内皮标记物CD144+在HP与NP中较低,但在Cov-P和NP中相似.
- 凝血标记 (D-Dimer,纤维素原) 在HP和Cov-P受试者之间是相似的.
结论:
- 患有COVID-19的孕妇的EVs表现出减弱的炎症特征.
- 在COVID-19阳性孕妇的EV中没有观察到凝血系统的额外激活.
- 孕产妇的EV可能有助于COVID-19的孕妇的良好疾病过程.
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