在逆侧和逆侧COVID-19疫苗接种后,SARS-CoV-2特定的幽默和细胞免疫反应的差异
Laura Ziegler1, Verena Klemis1, Tina Schmidt1
1Department of Transplant and Infection Immunology, Saarland University, Germany.
EBioMedicine
|August 13, 2023
概括
为两次COVID-19疫苗剂量选择相同的手臂可以增强免疫反应. 与逆侧疫苗接种相比,ipsilateral疫苗接种导致更高的中和抗体和CD8T细胞.
科学领域:
- 免疫学 免疫学 免疫学
- 疫苗学 疫苗学 疫苗学
- 传染性疾病 传染性疾病
背景情况:
- 双剂量COVID-19疫苗方案是连续注射到三角形肌肉中.
- 对第二剂药物对ipsilateral与contralateral手臂的免疫影响尚不清楚.
研究的目的:
- 为了研究第二剂COVID-19疫苗的ipsilateral和contralateral给药之间的免疫学差异.
- 为了确定疫苗部位对抗体和T细胞反应的影响.
主要方法:
- 对接受第二剂BNT162b2疫苗的303名天真个体的观察研究.
- 通过ELISA和替代试验量化高峰特异性IgG,IgG-avidity和中和抗体.
- 在子组中使用流细胞计分析尖端特异性的CD4和CD8T细胞.
主要成果:
- 在ipsilateral和contralateral疫苗接种之间,尖端特定的IgG水平或IgG-avidity没有显著差异.
- 在反侧疫苗接种后,显著降低中和活性和高峰特异性CD8T细胞水平.
- 在接种ipsilateral疫苗后,具有可检测的CD8T细胞的个体比例较高;在接种 contralateral 疫苗后,CD4 T细胞水平相似,但CTLA-4表达较高.
结论:
- 这两种疫苗接种策略都会引起强烈的免疫反应.
- 双侧接种疫苗显示出更明显的二次增强,可能是由于淋巴结排水.
- 通过ipsilateral疫苗接种的更高的中和抗体和CD8T细胞反应表明,有可能改善对感染和严重疾病的保护.
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