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Detection of single nucleotide insertion of BCR/ABL region in imatinib-resistant human myelogenous leukemia SR-1 cells

Abstract

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.

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This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Park, TH., Kwon, HC., Kim, HJ. et al. Detection of single nucleotide insertion of BCR/ABL region in imatinib-resistant human myelogenous leukemia SR-1 cells. Exp Mol Med 37, 507–511 (2005). https://doi.org/10.1038/emm.2005.63

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Keywords

  • drug resistance, neoplasm
  • frameshift mutation
  • fusion proteins, bcr-abl
  • imatinib
  • leukemia, myeloid, chronic

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