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Characterization of AMN107, a selective inhibitor of native and mutant Bcr-Abl.

机译:AMN107的表征,AMN107是天然和突变Bcr-Abl的选择性抑制剂。

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摘要

The Bcr-Abl tyrosine kinase oncogene causes chronic myelogenous leukemia (CML) and Philadelphia chromosome-positive (Ph+) acute lymphoblastic leukemia (ALL). We describe a novel selective inhibitor of Bcr-Abl, AMN107 (IC50 <30 nM), which is significantly more potent than imatinib, and active against a number of imatinib-resistant Bcr-Abl mutants. Crystallographic analysis of Abl-AMN107 complexes provides a structural explanation for the differential activity of AMN107 and imatinib against imatinib-resistant Bcr-Abl. Consistent with its in vitro and pharmacokinetic profile, AMN107 prolonged survival of mice injected with Bcr-Abl-transformed hematopoietic cell lines or primary marrow cells, and prolonged survival in imatinib-resistant CML mouse models. AMN107 is a promising new inhibitor for the therapy of CML and Ph+ ALL.
机译:Bcr-Abl酪氨酸激酶致癌基因可导致慢性粒细胞性白血病(CML)和费城染色体阳性(Ph +)急性淋巴细胞白血病(ALL)。我们描述了一种新型的Bcr-Abl选择性抑制剂AMN107(IC50 <30 nM),其显着比伊马替尼更有效,并且对许多对伊马替尼耐药的Bcr-Abl突变体具有活性。 Abl-AMN107复合物的晶体学分析为AMN107和伊马替尼针对伊马替尼耐药的Bcr-Abl的差异活性提供了结构解释。与其体外和药代动力学特征一致,AMN107延长了注射Bcr-Abl转化的造血细胞系或原代骨髓细胞的小鼠的存活,并延长了对伊马替尼耐药的CML小鼠的存活。 AMN107是一种有前途的新型抑制剂,可用于治疗CML和Ph + ALL。

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