IFN-gamma Regulates Expression of BRG1 Associated Factor 155/170 and Sensitivity to Steroid in Astrocytes
Immune Network
;
: 224-228, 2004.
Artículo
en Inglés
| WPRIM
| ID: wpr-13654
ABSTRACT
BACKGROUND:
The expression of BRG1 associated factors (BAF) 155 and BAF 170 in response to IFN-gamma or TNF-alpha was studied in astrocytoma cell lines and primary astrocytes. BAFs are complexed with BRG1 and are also associated with activated glucocorticoid for glucocorticoid trans-activation.METHODS:
IFN-gamma was pretreated for 18 hrs and cells were incubated with IL-1 or TNF-alpha for 72 hrs or 96 hrs with different concentrations of steroid. Cell death was measured by LDH assay. BAF expression was assayed by RT-PCR.RESULTS:
IFN-gamma increased cell death by dexamethasone in LN215 cells but not in LN319 cells. The IFN-gamma increased the expression of BAF 155 and BAF 170 in adult astrocytes and LN215 cells, but IFN-gamma decreased the expression of BAF 155/170 in LN319 cells. The effect of IFN-gamma on the expression of BAF was not as clear in fetal astrocytes as it was in adult astrocytes.CONCLUSION:
Our results suggest cytokines produced during immune reaction or immunotherapy may modulate steroid susceptibility of astrocytes and astrocytoma cells by influencing the expression of BAFs.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Astrocitoma
/
Dexametasona
/
Línea Celular
/
Astrocitos
/
Citocinas
/
Interleucina-1
/
Factor de Necrosis Tumoral alfa
/
Muerte Celular
/
Inmunoterapia
Tipo de estudio:
Estudio diagnóstico
Límite:
Adulto
/
Humanos
Idioma:
Inglés
Revista:
Immune Network
Año:
2004
Tipo del documento:
Artículo
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