Glucocorticoid-induced tumor necrosis factor receptor stimulation enhances the multifunctionality of adoptively transferred tumor antigen-specific CD8+ T cells with tumor regression.
Cancer Sci
; 100(7): 1317-25, 2009 Jul.
Article
em En
| MEDLINE
| ID: mdl-19432889
ABSTRACT
We have reported for the first time the significance of effector T-cell multifunctionality in antitumor immunity, suggesting that the appearance of multifunctional/polyfunctional tumor-specific CD8(+) T cells in vivo is a critical determinant of the success of antitumor immunotherapy, and a strategy to induce multifunctionality in effector cells is required for the successful immunotherapy of hosts with progressing tumor. Glucocorticoid-induced tumor necrosis factor receptor (GITR) stimulation has been shown to enhance antitumor immune response. However, its functional impact on adoptively transferred T cells remains unclear. Here, we analyzed the impact of GITR stimulation in vivo on the functional profiles of adoptively transferred CD8(+) T cells specific for murine fibrosarcoma CMS5. GITR stimulation was found to enhance multifunctionality (interferon (IFN)-gamma and tumor necrosis factor (TNF)-alpha production and CD107a mobilization as a degranulation marker) in transferred cells at the single-cell level. These cells exhibited upregulated expression of CD25 in draining lymph nodes and increased infiltration in tumor. Mice that received T-cell therapy with GITR stimulation showed reduced Foxp3(+)CD4(+) T cells among tumor infiltrating lymphocytes and increased in vivo cytotoxic T lymphocytes (CTL) activity even with progressing tumor, resulting in enhanced tumor regression. These data strengthen the idea that effector T-cell multifunctionality is a sensitive immune correlate for successful immunotherapy against malignancy and provide an immunological rationale for effective T-cell therapy combined with GITR stimulation.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Imunoterapia Adotiva
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Receptores de Fator de Crescimento Neural
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Receptores do Fator de Necrose Tumoral
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Linfócitos T CD8-Positivos
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Neoplasias Experimentais
Limite:
Animals
Idioma:
En
Revista:
Cancer Sci
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
Japão