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通过AdenovectoredRSV预注血糖蛋白+可溶性糖蛋白组合免疫,通过IgG3建立了持久的opsonophagocytic抗体反应

Xin Tong¹, Ross Blanc¹, Deniz Cizmeci¹

¹Ragon Institute of Mass General Brigham, MIT, and Harvard, Cambridge, MA, United States.

Frontiers in immunology

|August 6, 2025

概括

一次剂量Ad26.preF + SpreF呼吸道同胞病毒 (RSV) 疫苗可提供至少12个月的持久有效免疫力. 一年后的强剂疫苗没有增强免疫反应,这表明早期再接种疫苗的益处有限.

科学领域:

免疫学免疫学免疫学
疫苗学疫苗学疫苗学
病毒学病毒学

背景情况:

呼吸道同胞性病毒 (RSV) 导致严重的下呼吸道疾病,特别是在高风险人群中.
一种组合疫苗 (Ad26.preF + SpreF) 在IIb期试验中显示出80%的保护效果,但其长期免疫反应仍然没有特征.

研究的目的:

为了评估Ad26.preF + SpreFRSV疫苗引起的幽默免疫反应的寿命和功能.
为了评估一剂同类的强剂12个月后进行的对初级疫苗接种的影响.

主要方法:

系统血清学被用来分析接种疫苗的成年人血清.
测量包括IgG亚类,同型,Fc-γ受体 (FcγR) 结合和Fc-依赖的效应因子功能,如对RSV-F亚型A和B的opsonofagocytosis.
在初级剂量后12个月和强剂后28天采集了样本.

主要成果:

一次疫苗剂量诱导了持久的免疫力,持续的IgG3驱动的光细胞活动和广泛的FcγR参与 (IgG1,IgG2,IgG3) 持续了12个月.
一年后的增强剂量没有显著增加抗体标位,FcγR结合或功能性免疫反应,这表明原发性反应平稳.

结论:

Ad26.preF + SpreF疫苗在一次剂量后引起长期和功能强大的幽默免疫反应.
在12个月以后使用提升剂的早期再接种提供了有限的额外益处,这表明当前的提升剂时间可能对脆弱人群来说不是最佳的.

关键词:

这就是为什么RSV RSV.腺病毒载体病毒载体.抗体是一种抗体.输血前的葡萄糖蛋白质是什么疫苗疫苗疫苗疫苗

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