Beta-glucan-induced inflammatory monocytes mediate antitumor efficacy in the murine lung.
Cancer Immunol Immunother
; 67(11): 1731-1742, 2018 Nov.
Article
en En
| MEDLINE
| ID: mdl-30167860
ABSTRACT
ß-Glucan is a naturally occurring glucose polysaccharide with immunostimulatory activity in both infection and malignancy. ß-Glucan's antitumor effects have been attributed to the enhancement of complement receptor 3-dependent cellular cytotoxicity, as well as modulation of suppressive and stimulatory myeloid subsets, which in turn enhances antitumor T cell immunity. In the present study, we demonstrate antitumor efficacy of yeast-derived ß-glucan particles (YGP) in a model of metastatic-like melanoma in the lung, through a mechanism that is independent of previously reported ß-glucan-mediated antitumor pathways. Notably, efficacy is independent of adaptive immunity, but requires inflammatory monocytes. YGP-activated monocytes mediated direct cytotoxicity against tumor cells in vitro, and systemic YGP treatment upregulated inflammatory mediators, including TNFα, M-CSF, and CCL2, in the lungs. Collectively, these studies identify a novel role for inflammatory monocytes in ß-glucan-mediated antitumor efficacy, and expand the understanding of how this immunomodulator can be used to generate beneficial immune responses against metastatic disease.
Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Melanoma Experimental
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Monocitos
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Mediadores de Inflamación
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Beta-Glucanos
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Subunidad alfa del Factor 1 Inducible por Hipoxia
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Receptores CCR2
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Neoplasias Pulmonares
Tipo de estudio:
Prognostic_studies
Límite:
Animals
Idioma:
En
Revista:
Cancer Immunol Immunother
Asunto de la revista:
ALERGIA E IMUNOLOGIA
/
NEOPLASIAS
/
TERAPEUTICA
Año:
2018
Tipo del documento:
Article
País de afiliación:
Estados Unidos