Dendritic cell-elicited B-cell activation fosters immune privilege via IL-10 signals in hepatocellular carcinoma.
Nat Commun
; 7: 13453, 2016 11 17.
Article
em En
| MEDLINE
| ID: mdl-27853178
ABSTRACT
B cells are prominent components of human solid tumours, but activation status and functions of these cells in human cancers remain elusive. Here we establish that over 50% B cells in hepatocellular carcinoma (HCC) exhibit an FcγRIIlow/- activated phenotype, and high infiltration of these cells positively correlates with cancer progression. Environmental semimature dendritic cells, but not macrophages, can operate in a CD95L-dependent pathway to generate FcγRIIlow/- activated B cells. Early activation of monocytes in cancer environments is critical for the generation of semimature dendritic cells and subsequent FcγRIIlow/- activated B cells. More importantly, the activated FcγRIIlow/- B cells from HCC tumours, but not the resting FcγRIIhigh B cells, without external stimulation suppress autologous tumour-specific cytotoxic T-cell immunity via IL-10 signals. Collectively, generation of FcγRIIlow/- activated B cells may represent a mechanism by which the immune activation is linked to immune tolerance in the tumour milieu.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Linfócitos B
/
Ativação Linfocitária
/
Interleucina-10
/
Carcinoma Hepatocelular
/
Privilégio Imunológico
/
Neoplasias Hepáticas
Limite:
Female
/
Humans
/
Pregnancy
Idioma:
En
Revista:
Nat Commun
Assunto da revista:
BIOLOGIA
/
CIENCIA
Ano de publicação:
2016
Tipo de documento:
Article
País de afiliação:
China