在多种类型的L2基人类乳头瘤病毒抗原中,间间隔的变化会影响免疫性
Yueru Zhang1, Filipe Colaco Mariz1, Peter Sehr2
1German Cancer Research Center, Im Neuenheimer Feld 242, 69120, Heidelberg, Germany.
NPJ vaccines
|February 24, 2024
概括
研究人类乳头瘤病毒 (HPV) L2抗原中的甘氨酸-氨酸间隔剂改善了疫苗免疫性. 特定的间隔器变异增强了中和抗体诱导,为优化L2型HPV疫苗开发提供了洞察力.
科学领域:
- 疫苗学 疫苗学 疫苗学
- 免疫学 免疫学 免疫学
- 结构生物学 结构生物学
背景情况:
- 人类乳头瘤病毒 (HPV) 小囊蛋白L2是一种有前途的疫苗抗原.
- 现有的基于L2的纳米粒子抗原 (PANHPVAX,CUT-PANHPVAX) 显示出可变的中和抗体反应.
- 优化L2抗原免疫性对于有效的HPV疫苗至关重要.
研究的目的:
- 研究六种不同的甘氨酸-氨酸间隔剂对基于L2的HPV疫苗抗原免疫性的影响.
- 为了确定特定的间隔器变异,增强中和抗体对HPV的反应.
主要方法:
- 基于L2的纳米粒子抗原的开发,具有不同的甘氨酸-氨酸间隔器.
- 在小鼠模型中使用基于伪病毒的中和试验 (PBNA) 评估免疫性.
- 通过ELISA量化总抗L2抗体水平,并通过表面等离子体共振 (SPR) 分析单克隆抗体 (mAb) 激发率.
主要成果:
- 间隔器变种对抗原免疫性有不同的影响,M8merV6和C12merV6显示出优越的中和抗体诱导.
- 在大多数血清中,观察到总抗L2抗体水平和中和抗体水平之间的相关性.
- 对特定间隔体变异的单克隆抗体亲和力与它们中和抗体诱导的能力有很好的相关性,这表明亲和力是免疫性的一个预测因素.
结论:
- 甘氨酸-氨酸间隔剂显著影响基于L2的HPV疫苗抗原的免疫性.
- 特定的间隔器变异增强了广泛中和抗体的诱导.
- 单克隆抗体亲和度测试可以预测基于L2的抗原的免疫性,指导未来的HPV疫苗优化.
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