Antibody-dependent cell-mediated cytotoxicity using T cells with NK-like phenotype in combination with avelumab, an anti-PD-L1 antibody.
Immunology
; 167(2): 212-220, 2022 10.
Article
em En
| MEDLINE
| ID: mdl-35751879
ABSTRACT
Though the PD-L1 checkpoint inhibitor avelumab has shown efficacy in the treatment of some types of cancer, improved treatment strategies are desperately needed. We evaluated whether combined treatment with avelumab and adoptively transferred T-NK cells can provide enhanced anti-cancer effects for treating PD-L1-expressing tumours. Our results demonstrate that avelumab specifically targets tumour cells with high PD-L1 expression, and that cytolytic effects are mediated by T-NK effector cells cultured from patient peripheral blood monocytic cell populations. The effects were dependent on CD16 and the perforin/granzyme pathway, supporting a role for the T-NK subpopulation. In vivo assays verified the efficacy of T-NK cells in combination with avelumab in reducing tumour growth. Furthermore, T-NK + avelumab prolonged survival in a mouse orthotopic xenograft model. Collectively, our findings provide a basis for the combined use of adoptively transferred T-NK cells with avelumab as a novel strategy for cancer treatment.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Linfócitos T
/
Anticorpos Monoclonais
Tipo de estudo:
Prognostic_studies
Limite:
Animals
/
Humans
Idioma:
En
Revista:
Immunology
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
China