在接受活性治疗的B细胞淋巴细胞恶性瘤的mRNA疫苗接种患者中,SARS-CoV-2-特定T淋巴细胞分析
Patricia García Ramírez1, Marta Callejas Charavia1, Raquel Oliva Martin2,3
1Hematology Department, University Hospital "Príncipe de Asturias", Alcalá de Henares, 28805 Madrid, Spain.
Vaccines
|September 28, 2024
概括
患有B细胞恶性瘤的患者对mRNA COVID-19疫苗的抗体反应减少,但保持强大的T细胞免疫力. 了解这些疫苗诱导的免疫反应对于B细胞恶性瘤患者至关重要.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 疫苗学 疫苗学 疫苗学
背景情况:
- 患有B细胞恶性瘤 (BCM) 的患者面临更高的严重COVID-19风险和对mRNA疫苗的抗体反应降低的风险.
- 评估T淋巴细胞反应对于理解这种脆弱群体对SARS-CoV-2的免疫保护至关重要.
研究的目的:
- 在BCMs患者中分析mRNACOVID-19疫苗两剂后T淋巴细胞召回免疫反应.
- 为了比较BCM患者和健康对照者之间的T淋巴细胞和幽默反应.
主要方法:
- 招募了40名BCM患者和10名健康对照 (HCs) 在第二剂mRNA疫苗接种后四周.
- 使用细胞内IFN-γ染色和流动细胞计量评估了Spike (S) 特定的T淋巴细胞反应.
- 测量抗抗体以评估幽默反应.
主要成果:
- 总体抗体反应在BCM中为52.5%,在HC中为100% (p=0.008).
- 抗体反应在BCM类型和治疗方法之间存在显著差异,而抗CD20疗法显示出最低的反应 (6.7%).
- 虽然BCM患者的T淋巴细胞数量和分化阶段发生了变化,但疫苗诱导的T细胞反应通常是强大的.
结论:
- 在BCM患者中,mRNA疫苗诱导显著的幽默和细胞免疫反应,但具有显著的变异.
- 疫苗接种策略可能需要优化BCM患者,考虑到恶性瘤类型和治疗史.
- 进一步的研究对于完善这种免疫受损人群的疫苗接种方法至关重要.
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