ChAdOx1 nCoV-19 vaccination generates spike-specific CD8+ T cells in aged mice.
Immunol Cell Biol
; 101(6): 479-488, 2023 Jul.
Article
em En
| MEDLINE
| ID: mdl-36975169
ABSTRACT
Effective vaccines have reduced the morbidity and mortality caused by severe acute respiratory syndrome coronavirus-2 infection; however, the elderly remain the most at risk. Understanding how vaccines generate protective immunity and how these mechanisms change with age is key for informing future vaccine design. Cytotoxic CD8+ T cells are important for killing virally infected cells, and vaccines that induce antigen-specific CD8+ T cells in addition to humoral immunity provide an extra layer of immune protection. This is particularly important in cases where antibody titers are suboptimal, as can occur in older individuals. Here, we show that in aged mice, spike epitope-specific CD8+ T cells are generated in comparable numbers to younger animals after ChAdOx1 nCoV-19 vaccination, although phenotypic differences exist. This demonstrates that ChAdOx1 nCoV-19 elicits a good CD8+ T-cell response in older bodies, but that typical age-associated features are evident on these vaccine reactive T cells.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Linfócitos T CD8-Positivos
/
COVID-19
Limite:
Animals
/
Humans
Idioma:
En
Revista:
Immunol Cell Biol
Assunto da revista:
ALERGIA E IMUNOLOGIA
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
Reino Unido