TCF-1 limits intraepithelial lymphocyte antitumor immunity in colorectal carcinoma.
Sci Immunol
; 8(88): eadf2163, 2023 10 13.
Article
em En
| MEDLINE
| ID: mdl-37801516
ABSTRACT
Intraepithelial lymphocytes (IELs), including αß and γδ T cells (T-IELs), constantly survey and play a critical role in maintaining the gastrointestinal epithelium. We show that cytotoxic molecules important for defense against cancer were highly expressed by T-IELs in the small intestine. In contrast, abundance of colonic T-IELs was dependent on the microbiome and displayed higher expression of TCF-1/TCF7 and a reduced effector and cytotoxic profile, including low expression of granzymes. Targeted deletion of TCF-1 in γδ T-IELs induced a distinct effector profile and reduced colon tumor formation in mice. In addition, TCF-1 expression was significantly reduced in γδ T-IELs present in human colorectal cancers (CRCs) compared with normal healthy colon, which strongly correlated with an enhanced γδ T-IEL effector phenotype and improved patient survival. Our work identifies TCF-1 as a colon-specific T-IEL transcriptional regulator that could inform new immunotherapy strategies to treat CRC.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Neoplasias Colorretais
/
Linfócitos Intraepiteliais
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article