Immunizations with unmodified tumor cells and simultaneous COX-2 inhibition eradicate malignant rat brain tumors and induce a long-lasting CD8(+) T cell memory.
J Neuroimmunol
; 274(1-2): 161-7, 2014 Sep 15.
Article
em En
| MEDLINE
| ID: mdl-25022336
ABSTRACT
Malignant brain tumors induce pronounced immunosuppression, which diminishes immune responses generated by immunotherapy. Here we report that peripheral immunotherapy, using irradiated unmodified whole tumor cells, and systemic cyclooxygenase-2 inhibition induce cure in glioma-bearing rats (60% cure rate), whereas neither monotherapy was sufficient to cure any animal. Moreover, the combined therapy protected against secondary tumor challenges (89% cure rate) and the secondary immune response was correlated with increased plasma interferon-gamma levels and CD8(+) T cells systemically and intratumorally. In conclusion, we demonstrate that cyclooxygenase-2 inhibition is sufficient to render unmodified tumor cells immunogenic in immunotherapy of experimental brain tumors.
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MEDLINE
Assunto principal:
Neoplasias Encefálicas
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Linfócitos T CD8-Positivos
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Inibidores de Ciclo-Oxigenase 2
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Glioma
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Memória Imunológica
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article