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Updated: Jul 3, 2025

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Published on: February 23, 2018

应用基于价值的免疫选择来产生广泛交叉反应的抗体来对抗流感血凝素

Daniëla Maria Hinke^1,2, Ane Marie Anderson^1,2, Kirankumar Katta²

¹K.G. Jebsen Centre for Influenza Vaccine Research, University of Oslo, Oslo, Norway.

Nature communications

|February 12, 2024

概括

这项研究开发了一种新的DNA混合疫苗,针对保存的流感A病毒表位. 该疫苗成功诱导了广泛的抗体和T细胞反应,对H1病毒提供了部分保护.

科学领域:

免疫学免疫学免疫学
病毒学病毒学
疫苗开发疫苗开发

背景情况:

亚主导保存表位是广泛反应性抗体的具有挑战性的目标.
诱导针对多种流感A病毒亚型的免疫力需要新的疫苗策略.

研究的目的:

开发一种可编码多种流感A病毒血质素 (HA) 的等离子体DNA混合疫苗.
评估疫苗诱导广泛反应性抗体和T细胞对保存表位体的反应的能力.
评估疫苗对流感A病毒的保护挑战.

主要方法:

产生一个塑基DNA混合疫苗,将16种不同的HA亚型编码为蛋白质异构体.
用等离子体混合疫苗免疫雌性小鼠.
对抗体和T细胞反应的评估.
对抗H1型流感A型病毒保护的评估挑战.

主要成果:

该疫苗诱导了针对16种HA亚型的抗体和针对未包含的H1和H7亚型的交叉反应性抗体.
抗体分子表明不同HA亚型之间的交叉反应性.
疫苗引起了针对保存HA表位的T细胞反应.
接种疫苗的小鼠对H1型流感A型病毒感染有部分保护.

结论:

应用于多样化的抗原的基于价值的免疫选择可以将免疫反应引导到保守的亚主导病毒表位.
这种方法为开发广泛保护性流感疫苗提供了一个有希望的战略.

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