Expression of a murine homolog of apoptosis-inducing human IL-24/MDA-7 in murine tumors fails to induce apoptosis or produce anti-tumor effects.
Cell Immunol
; 275(1-2): 90-7, 2012.
Article
en En
| MEDLINE
| ID: mdl-22475191
ABSTRACT
Expression of human interleukin (IL)-24 in tumors achieved anti-tumor effects through apoptosis. IL-24 also induced secretion of proinflammatory cytokines, suggesting the role in immunity. We showed that murine IL-24 transcripts started from the second initiation codon and that expressed mIL-24 in tumors failed to induce apoptosis. Proliferation of murine cells expressing mIL-24 was the same as that of the parent cells and inoculation of the mIL-24-expressing tumors into syngeneic mice did not produce anti-tumor effects. Secretory mIL-24 did not induce the expression of the IL-6, TNF-α or IFN-γ gene in spleen cells. Expression of mIL-24 receptor subunits, IL-22R and IL-20R1, was undetectable in spleen cells even though they were stimulated by anti-CD3, anti-CD40 antibody or concanavalin A. Transduction of murine tumors with adenoviruses expressing the human IL-24 gene however suppressed the viability and decreased the tumor growth. These data suggest that mIL-24 is functionally irrelevant to the human counterpart.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Regulación de la Expresión Génica
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Citocinas
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Interleucinas
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Apoptosis
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Neoplasias
Límite:
Animals
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Female
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Humans
Idioma:
En
Revista:
Cell Immunol
Año:
2012
Tipo del documento:
Article
País de afiliación:
Japón