TGF-ß of lung cancer microenvironment upregulates B7H1 and GITRL expression in dendritic cells and is associated with regulatory T cell generation.
Oncol Rep
; 28(2): 615-21, 2012 Aug.
Article
em En
| MEDLINE
| ID: mdl-22614805
ABSTRACT
The effects of TGF-ß on dendritic cells (DCs) on the tumor microenvironment are not well understood. We report, here, the establishment of an in vitro lung cancer microenvironment by co-incubation of seminaphtharhodafluor (SNARF) labeled Lewis lung cancer (LLC) cells, carboxyfluorescein succinimidyl ester (CFSE) labeled fibroblasts and 4-chloromethyl-7-hydroxycoumarin (CMHC) labeled DCs. Raw 264.7, EL4 and NCI-H446 cells were able to synthesize TGF-ß which was determined by flow cyto-metry and western blotting, respectively. Furthermore, TGF-ß efficiently increased regulatory T-cell (Treg) expansion and upregulated DC B7H1 and GITRL expression. TGF-ß and the co-incubation of LLC cells, fibroblasts with DCs could augment the expression of B7H1 and GITRL molecules of DCs. The data presented here indicate that the B7H1 and GITRL molecules may play an important role in TGF-ß-induced Treg expansion of lung cancer microenvironment.
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Células Dendríticas
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Fator de Crescimento Transformador beta
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Linfócitos T Reguladores
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Fatores de Necrose Tumoral
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Antígeno B7-H1
Tipo de estudo:
Risk_factors_studies
Limite:
Animals
Idioma:
En
Revista:
Oncol Rep
Assunto da revista:
NEOPLASIAS
Ano de publicação:
2012
Tipo de documento:
Article