Effects of B7-H1 molecule blockade on tumor-infiltrating dendritic cell-mediated T-cell function
- VernacularTitle:封闭B7-H1分子对肿瘤浸润树突状细胞介导T细胞免疫功能的影响
- Author:
Yamin CHEN
;
Xiaohua LIANG
;
Ruofan HUANG
;
Xinli ZHOU
- Publication Type:Journal Article
- Keywords:
tumor infiltrating dendritic cell;
T cell;
B7-H1;
immune function
- From:
Chinese Journal of Cancer Biotherapy
1994;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To explore the expression of B7-1,B7-2 and B7-H1 on tumor-infiltrating dendritic cells(TIDC) and on splenic dendritic cells(SDC),and to investigate TIDC-mediated and SDC-mediated T-cell function after blocking B7-H1 expression in these dendritic cells.Methods: The TIDCs and SDCs were isolated from tumor-bearing mice using anti-mouse CD11c magnetic beads.The expression of B7-1,B7-2 and B7-H1 on TIDC and SDC was analyzed using flow cytometer.T cells were co-cultured with TIDCs or SDCs for the mixed lymphocyte reaction(MLR),and monoclonal antibodies to B7-H1 or the isotype control antibodies were added to the MLR cultures.T-cell proliferation was assessed using XTT method and the secretion of IL-10 was detected using ELISA.Results: B7-1 and B7-2 positive TIDCs were significantly less than SDCs(P0.05).T-cell proliferation stimulated by TIDCs was weaker than that stimulated by SDCs;T cells produced more IL-10 after TIDCs stimulation than after SDCs stimulation(P
