Osmotic stress sensitizes naturally resistant cells to TNF-alpha-induced apoptosis.
Cell Death Differ
; 9(10): 1090-8, 2002 Oct.
Article
en En
| MEDLINE
| ID: mdl-12232797
Most cells are naturally resistant to TNF-alpha-induced cell death and become sensitized when NF-kappaB transactivation is blocked or in the presence of protein synthesis inhibitors that prevent the expression of anti-apoptotic genes. In this report we analyzed the role of osmotic stress on TNF-alpha-induced cell death. We found that it sensitizes the naturally resistant HeLa cells to TNF-alpha-induced apoptosis, with the involvement of an increase in the activity of several kinases, the inhibition of Bcl-2 expression, and a late increase on NF-kappaB activation. Cell death occurs regardless of the enhanced NF-kappaB activity, whose inhibition produces an increase in apoptosis. The inhibition of p38 kinase, also involved in NF-kappaB activation, significantly increases the effect of osmotic stress on TNF-alpha-induced cell death.
Buscar en Google
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Estrés Fisiológico
/
FN-kappa B
/
Factor de Necrosis Tumoral alfa
/
Apoptosis
/
Sistema de Señalización de MAP Quinasas
/
Células Eucariotas
Límite:
Humans
Idioma:
En
Revista:
Cell Death Differ
Año:
2002
Tipo del documento:
Article
País de afiliación:
Argentina
Pais de publicación:
Reino Unido