Inhibitory effect on proliferation of KG1a cell line by methyltransferase inhibitors / 中国实验血液学杂志
Journal of Experimental Hematology
;
(6): 289-293, 2002.
Artigo
em Chinês
| WPRIM
| ID: wpr-337636
ABSTRACT
To explore the possibility of a new therapeutic strategy for leukemia by intervening in the DNA methylation to re-express p15 suppressor gene, methylation inhibitors, 5-Aza-2'-deoxycytidine (5-Aza-CdR) and cell differentiation agent (CDAII) were used to treat myelogenous leukemia cell line KG1a in which p15 gene expression was suppressed due to DNA hypermethylation. The biological characteristics of KG1a cells untreated or treated with the agents were investigated and analyzed using morphology, methylation specific-PCR (MSP), (3)H-labeled microassay technique, restriction endonuclease reaction, flow cytometry and immunofluorescence methods. The results indicated that both agents showed concentration-dependent and time-dependent inhibition of cell proliferation. 5-Aza-CdR and CDAII induced apoptosis and cell differentiation with G(2) and G(0)/G(1) arrest respectively. Furthermore, DNA methyltransferase activity and level of methylation in genomic DNA were decreased and p15 protein was re-expressed partially. It is concluded that it is possible to treat leukemia by intervening in the DNA methylation using methyltransferase inhibitors and it is worth to make a thorough study on mechanism of the new strategy.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Patologia
/
Farmacologia
/
Azacitidina
/
Metilases de Modificação do DNA
/
Leucemia Mieloide
/
Diferenciação Celular
/
Divisão Celular
/
Linhagem Celular
/
Genes Supressores de Tumor
/
Proteínas de Ciclo Celular
Limite:
Humanos
Idioma:
Chinês
Revista:
Journal of Experimental Hematology
Ano de publicação:
2002
Tipo de documento:
Artigo
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