作为对ZIKV持久性的反应,干扰素兰巴的决定性产生:临床证据和体外建模
Tamiris Azamor1, Daniela Prado Cunha1, Keyla Silva Nobre Pires2
1Oswaldo Cruz Foundation, Rio de Janeiro, Brazil.
Heliyon
|May 13, 2024
概括
寨卡病毒在胎盘中的持久性会导致炎症并影响胎儿的发育. 了解这些免疫反应是预防先天性寨卡综合征 (CZS) 的关键.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 产科 产科 产科 产科 产科
背景情况:
- 在怀孕期间感染寨卡病毒 (ZIKV) 可以导致先天性寨卡综合征 (CZS),其特征是严重的胎儿神经损伤.
- 已知胎盘ZIKV感染后的持久性,但其免疫影响仍然不清楚.
- 了解对ZIKV的胎盘免疫反应对于减轻妊娠不良后果至关重要.
研究的目的:
- 为了研究ZIKV在末期胎盘中持续存在的免疫影响.
- 分析干扰素 (IFN) 和炎症在ZIKV感染的胎盘中的作用.
- 建立和使用体外模型来研究胎盘ZIKV感染免疫学.
主要方法:
- 使用ZIKVRT-qPCR,组织病理学和基因表达分析 (炎症,IFNL1-4) 来分析ZIKV诊断的孕妇的胎盘 (n=64).
- 探索长期叶外热囊细胞 (EVTs) 和长期胆管 (TCV) 的初级培养物.
- 在ZIKV感染后胎盘细胞中免疫后果的体外评估.
主要成果:
- 来自先天性寨卡综合征 (CZS) 病例的胎盘显示了低的IFNL1-4表达,表明这些细胞因子的保护作用.
- 经ZIKV清除的胎盘呈现出增加的IFNL1,IFNL3和IFNL4水平,而病毒持久性与预炎性特征相关.
- 在体外,长期EVT对ZIKV更宽容,并且与TCV扩散剂相比分泌更高水平的IFN-α2和IFN-λ1.
结论:
- 长期胎盘中ZIKV的持久性,特别是叶炎症,导致IFNL1-4水平升高和促炎特征.
- 通过慢性虫炎和IFNL在ZIKV持久性期间的上调调节,母性扭曲的决定性细胞有助于胎盘炎症和抗病毒反应.
- 这项研究提供了有价值的体外模型和对ZIKV持久性期间胎盘免疫学景观的见解.
相关概念视频
Immune Response Against Viral Pathogens
2.4K
The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
2.4K
Inhibitors of Viral Protein Synthesis
73
Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...
73


