在单细胞分辨率下,早期人类胎盘对病原体的急性反应
Regina Hoo1, Elias R Ruiz-Morales2, Iva Kelava2
1Wellcome Sanger Institute, Cambridge, UK; Centre for Trophoblast Research, University of Cambridge, Cambridge, UK.
Cell systems
|May 4, 2024
概括
这项研究揭示了胎盘如何在单细胞水平上对疟疾和毒素菌等感染做出反应. 暴露于病原体会引发炎症,可能会影响怀孕和儿童的健康.
科学领域:
- 生殖生物学 生殖生物学
- 免疫学 免疫学 免疫学
- 传染性疾病 传染性疾病
背景情况:
- 胎盘起到关键的母胎屏障的作用,防止感染.
- 某些病原体可以突破这一障碍,导致严重的妊娠并发症和长期的儿童健康问题.
研究的目的:
- 为了分析单细胞胎盘对Plasmodium falciparum,Listeria monocytogenes和Toxoplasma gondii的反应.
- 了解由子宫内感染引起的妊娠并发症背后的细胞机制.
主要方法:
- 胎盘组织的单细胞分析.
- 对特定病原体的细胞反应的分析.
- 霍夫尔细胞 (HBC) 与病原体相互作用的表征.
主要成果:
- 所有的胎盘细胞类型在暴露于病原体时都会启动炎症反应,这可能会损害胎盘功能.
- 霍夫尔细胞 (HBCs) 被确定为Toxoplasma gondii的可能.
- 观察到Plasmodium falciparum通过改变宿主红细胞内的蛋白质出口和营养摄取来适应.
结论:
- 定义的细胞网络和信号通路在对病原体的反应中介于急性胎盘炎症.
- 这些炎症反应可能会对妊娠并发症产生重大影响.
- 了解这些机制是减轻感染对母亲和儿童健康的影响的关键.
相关概念视频
01:40Cell-mediated Immune Responses
Overview
01:22Development of Immunocompetence
The initiation of cell-mediated immunity can be observed as early as the third month of fetal growth, with active antibody-mediated immunity following approximately one month later.
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...