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Effect of tetrandrine in combination with droloxifen on the expression of NF-kappaB protein in K562 and K562/A02 cell lines / 中华血液学杂志
Chinese Journal of Hematology ; (12): 321-324, 2008.
Artigo em Chinês | WPRIM | ID: wpr-240017
ABSTRACT
<p><b>OBJECTIVE</b>To study the effect of tetrandrine (Tet) in combination with droloxifen (DRL) on the expression of nuclear factor kappa B (NF-kappaB) in K562 and K562/A02 cell lines and its reversal mechanism.</p><p><b>METHODS</b>The activation of NF-kappaB in K562 and K562/A02 cell lines and the effect of Tet or DRL alone or in combination on NF-kappaB protein expression were determined with immunocytochemistry and Western blotting respectively.</p><p><b>RESULTS</b>(1) K562/A02 cells displayed higher level of NF-kappaB protein expression than K562 cells. (2) The application of Tet or DRL alone or in combination had no effect on NF-kappaB expression in K562 cells at 6 h and 12 h (P > 0.05). (3) Tet and DRL alone or in combination could significantly down-regulate NF-kappaB protein expression in nuclei of K562/A02 cells. The effect was more significant in combination than either alone. This effect was more significant at 12 h than at 6 h.</p><p><b>CONCLUSIONS</b>(1) Activation of NF-kappaB may be involved in the mechanism of MDR of K562/A02 cell line. (2)Inhibition of NF-kappaB activation may be involved in the reversal of multidrug resistance in K562/A02 cells by Tet and DRL.</p>
Assuntos
Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Farmacologia / Tamoxifeno / NF-kappa B / Resistência a Múltiplos Medicamentos / Células K562 / Benzilisoquinolinas / Metabolismo Limite: Humanos Idioma: Chinês Revista: Chinese Journal of Hematology Ano de publicação: 2008 Tipo de documento: Artigo

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Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Farmacologia / Tamoxifeno / NF-kappa B / Resistência a Múltiplos Medicamentos / Células K562 / Benzilisoquinolinas / Metabolismo Limite: Humanos Idioma: Chinês Revista: Chinese Journal of Hematology Ano de publicação: 2008 Tipo de documento: Artigo