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Updated: Sep 15, 2025

Expression and Purification of Virus-like Particles for Vaccination

Expression and Purification of Virus-like Particles for Vaccination

Published on: June 2, 2016

开发DNA和mRNA-LNP疫苗,对抗H5N1类2.3.4.4b型流感病毒

Rebecca A Leonard¹, M Ariel Spurrier¹, Samantha Skavicus¹

¹Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, North Carolina, USA.

Journal of virology

|July 16, 2025

概括

针对禽流感H5N1的新型DNA和mRNA疫苗有望保护动物和人类. 这些新型疫苗提供了一个可扩展的解决方案来应对新出现的动物性疾病威胁.

科学领域:

兽医医学兽医医学兽医医学
病毒学病毒学
疫苗学疫苗学疫苗学

背景情况:

高致病性禽流感 (HPAI) H5N1病毒正在美国牛和家禽中传播,构成公共卫生风险.
基于核酸的疫苗,包括mRNA-脂质纳米粒子 (LNP),在病毒流行期间比传统疫苗具有潜在的优势.
针对H5N1菌株的mRNA-LNP疫苗的有效性尚未完全确定.

研究的目的:

开发和评估新型DNA和mRNA-LNP疫苗,对来自H5N1 A/Texas/37/2024菌株的血凝素 (HA) 和神经氨基酶 (NA) 进行编码.
在小鼠模型中评估这些疫苗对致命的H5N1病毒挑战的保护效果.
探索这些疫苗在保护牲畜和人类免受新出现的H5N1流感病毒威胁方面的潜力.

主要方法:

开发DNA和mRNA-LNP疫苗,在单个开放的读取框架中编码来自H5N1 A/Texas/37/2024的HA和NA.
用开发的DNA和mRNA-LNP疫苗对小鼠进行免疫接种.
针对HA和NA蛋白质的免疫反应的评估.
对致命的H5N1病毒病毒的疫苗保护的评估挑战.

主要成果:

双抗原DNA和mRNA-LNP疫苗成功地引起了对HA和NA蛋白质的强烈免疫反应.
接种疫苗的小鼠对致命的H5N1病毒挑战表现出完全的保护.
在小鼠模型中,疫苗有效预防严重的发病率和死亡率.

结论:

针对H5N1 HPAI病毒的新型DNA和mRNA-LNP疫苗显示出显著的临床前疗效.
这些疫苗平台为致命的H5N1挑战提供了强大的保护,这表明它们对动物和人类健康的有用性.
这些疫苗的适应性和可扩展性为打击新出现的动物性流感威胁提供了切实可行的解决方案.

关键词:

这些都是DNA疫苗,DNA疫苗.在H5N1型流感中,H5N1型流感流感病毒是流感的病毒.使用mRNA-LNP疫苗进行.

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