在上下文依赖的亲和力成熟模型下计算广义中和抗体的诱导性:用于顺序疫苗设计的应用
Joseph Mathews1, Elizabeth Van Itallie2, Yongkang Li3
1Department of Statistical Science, Duke University, Durham, NC, United States.
Journal of immunology (Baltimore, Md. : 1950)
|September 19, 2025
概括
设计疫苗以引起特定的中和抗体,如艾滋病毒的抗体,是一项挑战. 这项研究模拟了B细胞的反应,以了解如何通过免疫原设计最好地诱导这些关键抗体.
科学领域:
- 免疫学 免疫学 免疫学
- 计算生物学 计算生物学
- 疫苗设计 疫苗设计
背景情况:
- 基于B细胞谱系的疫苗设计需要了解抗体的"诱导性".
- 抗体诱导取决于随机多样化和选择,受途径可访问性的影响.
研究的目的:
- 使用详细的随机模型探索抗体诱导性.
- 为了计算对艾滋病毒广泛中和抗体 (bnAb) CH235.12.12 关键突变的诱导性.
- 确定在连续接种方案中增强免疫原的设计机会.
主要方法:
- 开发了一种体质高突变的随机模型,考虑了上下文依赖.
- 这与B细胞克隆成熟的随机人群模型相结合.
- 针对HIV bnAb CH235.12.12关键突变的计算诱导性
主要成果:
- 提供了关于引起艾滋病毒广泛中和抗体 (bnAbs) 的障碍的见解.
- 在小鼠模型中解释了实验观察.
- 能够对B细胞成熟路径概率进行详细分析.
结论:
- 该模型有助于理解和克服艾滋病毒bnAb引起的挑战.
- 确定了设计顺序接种方案的策略,以诱导特定的bnAbs,如CH235.12.
- 为分析疫苗开发中的抗体诱导性提供了一个框架.
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