Apoptosis effects of drug sensitivity leukemia cells induced by nano-realgar / 中国中药杂志
China Journal of Chinese Materia Medica
;
(24): 2202-2205, 2013.
Artigo
em Chinês
| WPRIM
| ID: wpr-346414
ABSTRACT
<p><b>OBJECTIVE</b>To explore apoptosis-inducing effects of realgar nanoparticle (nano-realgar) on drug-sensitive leukemia cells.</p><p><b>METHOD</b>Preparation of nano-realgar was mechanical milled using a high-energy planetary ball mill. Using drug-sensitive leukemia cells (K562) as target cells, MTT assay was used to detect the proliferating activity of K562 cells, and the cellular apoptosis was investigated with double staining of FITC-Annexin V and propidium iodide (PI) by flow cytometry. Flow cytometry (FCM) was employed to detect expression of intracellular Bax, Bcl-2, P-53 protein and the activity of Caspase-3.</p><p><b>RESULT</b>The raw realgar was made to ultra-fine powder by ball milling, and the average diameter of the nanoparticle was (72.72 +/- 22.18) nm measured with electron microscopes. Nano-realgar significantly inhibited the proliferation of K562 cells, Treated for 24, 48 and 72 hours, the 50% inhibitory concentration (IC50) was 43.48, 20.52, 16.07 mg x L(-1). After exposure to 20 mg x L(-1) and 50 mg x L(-1) nano-realgar for 48 hours, the apoptosis of K562 cells detected by Annexin V/PI staining was increased, the apoptotic rate of K562 cells was 10. 52% and 73.25%. After the target cells were treated with 20 mg x L(-1) and 50 mg x L(-1) nano-realgar for 48 h, the expression of P-53, Bax, Bcl-2 markedly increased in a time and dose-dependent manner. After administration of 20 mg x L(-1) and 50 mg x L(-1) nano-realgar for 48 h, the percentage of BCRP+, P-gp+ and co-expressing P-gp and BCRP cell population in K562 cells incrased dramatically.</p><p><b>CONCLUSION</b>Nano-Realgar significantly induced apoptosis of drug-sensitive leukemia cells.</p>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Patologia
/
Farmacologia
/
Arsenicais
/
Sulfetos
/
Leucemia
/
Proteína Supressora de Tumor p53
/
Apoptose
/
Proteínas Proto-Oncogênicas c-bcl-2
/
Células K562
/
Nanotecnologia
Tipo de estudo:
Estudo diagnóstico
Limite:
Humanos
Idioma:
Chinês
Revista:
China Journal of Chinese Materia Medica
Ano de publicação:
2013
Tipo de documento:
Artigo
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