强制性预防性疫苗用于传染病,表达T细胞表皮图,用于预防癌症
Concetta Ragone1, Angela Mauriello1, Beatrice Cavalluzzo1
1Innovative Immunological Models Unit, Istituto Nazionale Tumori - IRCCS - "Fond G. Pascale", Via Mariano Semmola, 52, Naples, Italy.
Infectious agents and cancer
|July 23, 2025
概括
儿科疫苗可以提供预防癌症的保护. 强制性疫苗接种引起与瘤抗原交叉反应的T细胞反应,这表明在预防感染和某些癌症方面具有潜在的双重作用.
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:
- 微生物相关抗原 (MAA) 与瘤相关抗原 (TAA) 呈现同质性,导致T细胞交叉反应.
- 在SARS-CoV-2疫苗引起的T细胞反应,与TAAs交叉反应.
- 强制性儿科疫苗对于预防传染病至关重要.
研究的目的:
- 调查强制性儿科疫苗 (六价,MMR,天花) 是否可以诱导与瘤抗原交叉反应的T细胞反应.
- 为了确定疫苗衍生的表位和与癌症相关的蛋白质之间的潜在分子模仿.
主要方法:
- 对12种常见的HLA A和B等位基的六价,MMR和天花疫苗的MHC I类表位 (9-mers) 的预测.
- 强结合剂 (SB) 的鉴定和细胞蛋白与分子模拟的分析.
- 鉴定的表位与在人类癌症中过度表达的蛋白质的相关性.
主要成果:
- 确定了3177个强结合因子 (SB),其中HLA-A*02:01是最常见的等位基因.
- 397个SB与六价疫苗和571个MMR疫苗有关.
- 发现了59个来自细胞蛋白的SB分子模拟,其中13个在癌症中过度表达,这表明潜在的交叉反应性.
结论:
- 强制性儿科疫苗接种可能会诱导CD8+ T细胞对模仿瘤表位的微生物表位的反应.
- 这种交叉反应性表明,儿科疫苗对某些癌症有潜在的预防作用.
- 需要进一步进行大规模的免疫-流行病学研究来验证这些发现.
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