从之前感染寨卡病毒的个体的PBMC中拯救病原体特异性记忆B细胞
Jacyelle Medeiros Silva1, Renato Kaylan Alves de Oliveira França2, Pedro Henrique Barros1
1Department of Cellular Biology, Institute of Biological Science, University of Brasília, Brasília, Brazil; Molecular Biology Post-Graduation Program, UnB, Brazil.
Immunology letters
|November 14, 2024
概括
这项研究提出了一种实用方法,可以从先前感染的个体中扩展寨卡病毒特异性记忆B细胞 (MBCs). 该协议有效地增加了用于研究的功能性MBCs,即使是最初感染数年后.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 疫苗学 疫苗学 疫苗学
背景情况:
- 免疫记忆提供了对病原体的长期保护.
- 记忆B细胞 (MBCs) 对于快速有效的二次免疫反应至关重要.
- 循环MBCs的有限可用性阻碍了需要大量细胞数量的研究.
研究的目的:
- 开发一个实用的协议,以激活和扩展寨卡病毒 (ZIKV) 特定的MBCs在体外.
- 评估扩展的MBC的功能和特异性.
主要方法:
- 来自ZIKV感染个体的外周血液单核细胞 (PBMC) 用IL-2和R848 (TLR-7/8激动剂) 进行培养.
- 用非活化的ZIKV刺激细胞.
- 七天后,分析了病毒特异性MBC和抗ZIKVIgG生产的变化.
主要成果:
- 该协议显著增加了功能ZIKV特异性MBC的数量.
- 观察到抗ZIKVIgG产量的显著增加.
- 从没有ZIKV病史的个人中,PBMCs没有引起显著的变化.
结论:
- 病毒特异性MBC可以有效地在体外扩展,从几年前感染的个体.
- 该协议为获得足够的功能性人类MBCs用于病原体特定研究提供了宝贵的工具.
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