甲型和C型犀利病毒引发长期抗体反应,具有有限的交叉中和
Yury A Bochkov1, Mark Devries1, Kaitlin Tetreault1
1University of Wisconsin-Madison, Madison, Wisconsin, USA.
Journal of medical virology
|August 28, 2023
概括
儿童的犀牛病毒 (RV) 感染显示了RV-A和RV-C类型之间有限的交叉中和. 对两种RV类型的抗体反应持续时间相似,这表明RV疫苗需要广泛的类型代表性.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 儿科 儿科 儿科
背景情况:
- 鼻病毒 (RVs) 在儿童和喘患者中引起严重的呼吸道疾病.
- 由于许多类型和有限的交叉中和数据,RV疫苗的开发受到挑战.
- 之前的研究表明,儿童对RV-C的中和抗体 (nAb) 反应高于RV-A.
研究的目的:
- 调查RV-C感染是否会比RV-A诱导更多的交叉中和或持久的nAb反应.
- 为了比较对RV-A和RV-C感染的nAb反应的交叉中和能力和持续时间.
主要方法:
- 用连续感染频率的日志线性回归分析聚合的RV诊断数据.
- 测试RV-A和RV-C nAb响应持续时间的纵向血样本.
- 用小鼠血清和人体血进行血清分析,以评估异型活性.
主要成果:
- 在特定的RV-A类型 (A12-A75,A12-A78,A20-A78,A75-A78) 和一个RV-C对 (C2-C40) 之间观察到有限的相互交叉中和.
- RV-C40感染诱导了对RV-C2.2的适度交叉活性的nAb反应.
- 纵向分析显示,RV-A和RV-C nAb反应的持续时间在2至18岁之间是相似的.
结论:
- RV-A和RV-C nAb反应表现出适度的交叉反应性,主要是在基因相似的类型中.
- 与假设相反,RV-C可能比RV-A具有更少的交叉中和类型.
- 类似的nAb响应持续时间表明,RV疫苗需要广泛代表流行类型.
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