[Multidrug resistance mechanisms in cell line HL-60/VCR].
Ai Zheng
; 21(12): 1310-3, 2002 Dec.
Article
em Zh
| MEDLINE
| ID: mdl-12520737
ABSTRACT
BACKGROUND & OBJECTIVE:
Drug resistance is a major factor in chemotherapeutic failure of leukemia. Multidrug resistant cell lines are the good models for investigating the mechanisms and reversal of acquired drug resistance. This study was designed to explore the multidrug resistance (MDR) mechanisms in cell line HL-60/VCR.METHODS:
Flow cytometry and a panel of antibodies were used to analyze the expression of MDR proteins (P-gp, MRP, LRP, BCRP, GST-pi) and apoptosis-modulating proteins (bcl-2, bcl-x, bax, bad) in MDR cell line HL-60/VCR and drug sensitive cell line HL-60.RESULTS:
The expression levels of MDR proteins (P-gp, MRP, BCRP, GST-pi) were (18.62, 1.19, 1.50, 1.32-flod) higher in HL-60/VCR than in HL-60, while the expression of LRP level was similar. The levels of apoptosis-modulating proteins(bcl-2, bcl-x, bad) were (2.48, 1.25, 1.08-fold) higher in HL-60/VCR than in HL-60, while the pro-apoptosis protein bax contrarily decreased in HL-60/VCR.CONCLUSION:
Various MDR mechanisms were involved in multi-drug resistance HL-60/VCR cell line, which including increasing expression of drug-resistance protein (P-gp, MRP, BCRP, and GST-pi); the apoptosis-modulating proteins (bcl-2, bcl-x, bax, and bad) might take part in the mechanism of drug resistance.
Buscar no Google
Coleções:
01-internacional
Temas:
Geral
Base de dados:
MEDLINE
Assunto principal:
Vincristina
/
Células Tumorais Cultivadas
/
Resistência a Múltiplos Medicamentos
/
Proteínas de Neoplasias
/
Antineoplásicos Fitogênicos
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
Zh
Revista:
Ai Zheng
Assunto da revista:
NEOPLASIAS
Ano de publicação:
2002
Tipo de documento:
Article