在体外mRNA-S母体疫苗接种诱导了母胎界面的免疫调节变化
Ananth Kumar Kammala1, Madhuri Tatiparthy1, Tilu Jain Thomas1
1Division of Basic Science and Translational Research, Department of Obstetrics & Gynecology, The University of Texas Medical Branch at Galveston, Galveston, Texas, USA.
概括
母亲mRNA-S疫苗接种可能会改变母胎界面的免疫环境. 这项研究研究了mRNA-S疫苗和含有Spike (S) 蛋白质的细胞外囊泡 (EVs) 在怀孕期间对免疫细胞的影响.
科学领域:
- 生殖免疫学 生殖免疫学
- 疫苗免疫学 疫苗免疫学
- 细胞和分子免疫学 细胞和分子免疫学
背景情况:
- 母胎免疫学是复杂的,mRNA-S疫苗对母胎界面的免疫调节的影响需要进一步研究.
- 了解这些免疫变化对于怀孕期间的母亲和胎儿健康结果至关重要.
研究的目的:
- 研究mRNA-S疫苗和Spike (S) 蛋白载荷细胞外囊 (EVs) 对母体决定性细胞和胎儿胆 trofhoblast 细胞 (hFM-CTCs) 在母胎界面的影响.
- 为了阐明这些成分在孕妇中触发的免疫反应.
主要方法:
- 验证了mRNA-S疫苗接种后从上皮细胞生成含有S蛋白的EV.
- 在胎盘和胎儿膜组织中评估血管氨酸转化酶2 (ACE2) 表达,包括果和胆管细胞.
- 对复合S蛋白和S蛋白载荷EV (eSP) 暴露的果细胞和hFM-CTC,以评估细胞功能和免疫反应.
主要成果:
- mRNA-S疫苗接种改变了细胞和EVs中的S蛋白表达.
- 在胎盘同胞细胞和胎儿膜胆细胞中观察到高ACE2表达.
- EVs激活了树叶细胞中的MAPK通路,增加了CXCL-10,CXCL-11和IL-6基因表达,而hFM-CTCs在对eSPs的反应中显示出促炎细胞因子和化学因子的显著改变.
结论:
- mRNA-S母体疫苗可能会影响COVID-19的相互作用和在母胎界面的免疫调节.
- 需要进一步的研究,以充分评估怀孕期间mRNA-S疫苗接种的安全性和影响.
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