引入辅助剂加载的颗粒性乙型肝炎核心抗原作为另一种治疗性乙型肝炎疫苗组件
Jinpeng Su1,2, Zahra Harati Taji3,4,5, Anna D Kosinska1,2
1Institute of Virology, Technical University of Munich / Helmholtz Munich, 81675, Munich, Germany.
JHEP reports : innovation in hepatology
|March 1, 2024
概括
添加辅助剂的乙型肝炎核心抗原 (HBcoreAg) 增强了疫苗的稳定性和免疫性. 这种新的平台对治疗性乙型肝炎疫苗和作为辅助性输送系统具有前景.
科学领域:
- 疫苗学 疫苗学 疫苗学
- 免疫学 免疫学 免疫学
- 乙型肝炎病毒 (HBV) 研究
背景情况:
- 微粒乙肝核心抗原 (HBcoreAg) 是疫苗载体,但其稳定性和免疫性可以调节.
- 在大肠杆菌中产生的HBcoreAg自然封装了细菌RNA (bRNA).
研究的目的:
- 为了比较不同HBcoreAg形式的特性,用于治疗性乙肝疫苗的开发.
- 研究HBcoreAg含量如何影响抗原稳定性,免疫性和抗病毒功效.
主要方法:
- HBcoreAg 被拆解并重新组装,使用或不使用核酸辅助剂 (多I:C或CpG).
- 用电子显微镜和NMR光谱分析了形态和结构.
- 治疗性乙型肝炎疫苗 (TherVacB) 方案在野生型和HBV载体小鼠中进行了测试.
主要成果:
- 与空的HBcoreAg相比,辅助剂载荷的HBcoreAg保持了结构完整性和增强了稳定性.
- 用辅助剂加载的HBcoreAg免疫诱导高抗体标位和强烈的T细胞反应.
- 添加辅助剂的HBcoreAg导致携带者小鼠在减少辅助剂剂量时长期控制HBV复制.
结论:
- 添加辅助剂的HBcoreAg保留了囊的完整性和免疫性,需要较低的辅助剂水平.
- 该平台支持对联合使用的抗原的免疫力,是有前途的疫苗开发工具.
- 添加辅助剂的HBcoreAg可以作为各种疫苗的有效辅助剂输送系统.
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