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Experimental & Molecular Medicine ; : 507-511, 2005.
Artículo en Inglés | WPRIM | ID: wpr-207068

RESUMEN

Imatinib mesylate is a selective Bcr/Abl kinase inhibitor and an effective anticancer agent for Bcr/Abl-positive chronic myelogenous leukemia. Most patients in chronic phase maintain durable responses; however, many in blast crisis fail to respond, or relapse quickly. Mutations within the BCR/ABL kinase domain are the most commonly identified mechanism associated with relapse. To overcome the imatinib resistance in CML, many investigators have tried to clarify molecular mechanism for imatinib resistance in cells of patients who failed to respond to imatinib. Our aim was to invesitigate underlying mechanism for imatinib resistance in SR-1 cells, which were derived from a CML patient in blast crisis. We detected the new mutation of BCR/ABL, resulting in premature termination and loss of BCR/ABL fusion protein expression, which might be possible mechanism for the resistance to imatinib in SR-1 cells.


Asunto(s)
Humanos , Secuencia de Aminoácidos , Secuencia de Bases , Línea Celular Tumoral , Resistencia a Antineoplásicos/genética , Proteínas de Fusión bcr-abl/química , Leucemia Mieloide/genética , Datos de Secuencia Molecular , Mutagénesis Insercional/genética , Nucleótidos/genética , Piperazinas/farmacología , Mutación Puntual/genética , Pirimidinas/farmacología
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