Effect of hypoxia on the proliferation and hypoxia inducible factor-1α expression in human leukemia HL-60 cells / 南方医科大学学报
Journal of Southern Medical University
;
(12): 1890-1894, 2011.
Artigo
em Chinês
| WPRIM
| ID: wpr-265759
ABSTRACT
<p><b>OBJECTIVE</b>To explore the effects of hypoxia on the proliferation of human leukemia HL-60 cells and the cellular expression of hypoxia inducible factor-1α (HIF-1α).</p><p><b>METHODS</b>Human acute myeloid leukemia HL-60 cells with exponential growth in routine culture were exposed to 50, 200, 400, 800 µmol/L CoCl(2) to mimic hypoxic conditions. At 24, 48, and 72 h, the cells were collected for morphological observation, MTT assay, and real-time quantitative PCR for HIF-1α mRNA expression.</p><p><b>RESULTS</b>Compared with the cells without CoCl(2) treatment, the cells with CoCl(2) exposure exhibited obvious morphological changes and a significant growth inhibition which increased with CoCl(2)concentration and exposure time. At low concentrations (50-200 µmol/L), CoCl(2) treatment caused a dose- and time-dependent enhancement of HIF-1α expression in HL-60 cells.</p><p><b>CONCLUSION</b>Hypoxia mimicked by CoCl(2) exposure significantly inhibits the proliferation of HL-60 cells, and at the non-toxic doses, CoCl(2) dose- and time-dependently increases the expression of HIF-1α. The mimicked hypoxic conditions do not cause differentiation of HL-60 cells.</p>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Farmacologia
/
RNA Mensageiro
/
Hipóxia Celular
/
Cobalto
/
Células HL-60
/
Proliferação de Células
/
Subunidade alfa do Fator 1 Induzível por Hipóxia
/
Genética
/
Metabolismo
Limite:
Humanos
Idioma:
Chinês
Revista:
Journal of Southern Medical University
Ano de publicação:
2011
Tipo de documento:
Artigo
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