Cytocidal effect of interleukin 1 (IL-1) on HeLa cells is mediated by both soluble and transmembrane tumor necrosis factor (TNF).
Cytokine
; 42(2): 243-255, 2008 May.
Article
en En
| MEDLINE
| ID: mdl-18387309
ABSTRACT
Interleukin 1 (IL-1) is a pleiotropic cytokine able to induce cytocidal effect. The aim of the presented work was to analyze the mechanism of IL-1-induced cytocidal effect in HeLa cells in the presence of cycloheximide (CHX). We found that the pattern of IL-1-induced cell death shares significant similarities with the effect of tumor necrosis factor (TNF) in these cells. Subsequently, we identified IL-1 cytotoxicity as an indirect effect. The supernatant collected from the cells treated with IL-1 and CHX showed toxic activity towards IL-1-resistant while TNF-sensitive A9 cells. Furthermore, antibodies neutralizing TNF blocked HeLa cell death induced by IL-1/CHX. TNF was then detected in HeLa cells by means of flow cytometry, fluorescence microscopy and ELISA of detergent-soluble cell extracts. In the presence of an inhibitor of TNF sheddase (TACE), the cytotoxic effect of IL-1/CHX and the amount of TNF protein in detergent-soluble cell extracts were enhanced. These results suggest that in response to interleukin 1/CHX, the amount of transmembrane TNF is increased. Taken together, we demonstrated that the mechanism of IL-1 cytotoxic activity in HeLa cells in the presence of CHX depends on the function of soluble and transmembrane TNF.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Neoplasias del Cuello Uterino
/
Interleucina-1
/
Factores de Necrosis Tumoral
Tipo de estudio:
Prognostic_studies
Límite:
Animals
/
Female
/
Humans
Idioma:
En
Revista:
Cytokine
Asunto de la revista:
ALERGIA E IMUNOLOGIA
Año:
2008
Tipo del documento:
Article
País de afiliación:
Polonia