跨胚胎胎mRNA疫苗接种:在动物模型中对寨卡病毒进行活性免疫接种
Emily M Scire1, Alex L Huang1, Thais Boccia1
1Departments of Surgery, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts.
Journal of pediatric surgery
|January 11, 2026
概括
在大鼠中对寨卡病毒 (ZIKV) 进行跨胎儿mRNA疫苗接种成功诱导了幼的保护性抗体和细胞免疫力. 这种新的围产期免疫策略显示了预防ZIKV感染的前景.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 发展生物学 发展生物学
背景情况:
- 寨卡病毒 (ZIKV) 对孕妇和胎儿构成重大威胁.
- 目前的疫苗接种策略并不直接针对胎儿进行围产期免疫接种.
- 开发有效的胎儿免疫方法对于预防先天性ZIKV综合征至关重要.
研究的目的:
- 评估跨子胎儿mRNA疫苗对ZIKV的围产期免疫接种的疗效.
- 在动物模型中评估胎儿mRNA接种疫苗后诱导幽默和细胞免疫反应.
主要方法:
- 怀孕的Sprague Dawley大鼠接受了编码ZIKV结构蛋白的mRNA (ZIKV-prM和ZIKV-E) 或对照载体的胎内注射.
- 胎儿mRNA疫苗接种是在妊娠17-18天进行的.
- 婴儿血清抗体水平 (IgG) 和细胞免疫反应 (T 细胞检测) 进行了产后分析.
主要成果:
- 从出生后第5天到第16天的接种疫苗的幼犬中,ZIKV-E特异性IgG抗体显著增加.
- 接种疫苗的幼犬在ZIKV抗原挑战时,在脊髓细胞中增加了IL-6和IFN-γ的产生.
- 在接种疫苗的幼犬的淋巴结细胞中观察到增强的IFN-γ生产和减少的IL-13生产.
结论:
- 跨胎儿mRNA疫苗接种是一种可行的策略,可以诱导对ZIKV的适应性体和细胞免疫力.
- 这种方法可以在新生儿时期建立免疫反应,从而提供对ZIKV感染的潜在保护.
- 需要进一步的研究来探索这种围产期免疫方法的长期疗效和安全性.
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