Influence of As(2)O(3) on proteasome beta(1)-subunit in NB4 cells / 中国实验血液学杂志
Journal of Experimental Hematology
;
(6): 579-582, 2009.
Artigo
em Chinês
| WPRIM
| ID: wpr-334066
ABSTRACT
This study was aimed to explore the correlation between effects of arsenic trioxide on NB4 cell differentiation and the change of beta(1)-subunit of 26S proteasome. NB4 cell in 0.5 micromol/L As(2)O(3) was incubated for 24 hours and 48 hours, then total protein was extracted, expressions of subunit beta(1) and PML-RARalpha fusion protein were determined by Western blot. The results indicated that the expression of 26S proteasome beta(1)-subunit increased after incubation with As(2)O(3) for 24 hours, but after culture with As(2)O(3) for 48 hours, the expression of beta-subunit decreased to the baseline. Meanwhile, the expression of PML-RARalpha fusion protein obviously decreased after 24 hours, and kept low level at 48 hours. It is concluded that the expression of 26S proteasome beta(1)-subunit increases after exposure to As(2)O(3). Increment of 26S proteasome beta(1)-subunit may be associated with the degradation of PML-RARalpha fusion protein and plays roles in the differentiation and apoptosis of NB4 cells.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Óxidos
/
Farmacologia
/
Arsenicais
/
Células Tumorais Cultivadas
/
Leucemia Promielocítica Aguda
/
Proteínas de Fusão Oncogênica
/
Diferenciação Celular
/
Apoptose
/
Complexo de Endopeptidases do Proteassoma
/
Metabolismo
Limite:
Humanos
Idioma:
Chinês
Revista:
Journal of Experimental Hematology
Ano de publicação:
2009
Tipo de documento:
Artigo
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