Global PROTAC Toolbox for Degrading BCR–ABL Overcomes Drug-Resistant Mutants and Adverse Effects
作者:Yiqing Yang、Hongying Gao、Xiuyun Sun、Yonghui Sun、Yueping Qiu、Qinjie Weng、Yu Rao
DOI:10.1021/acs.jmedchem.0c00967
日期:2020.8.13
systematically designed a set of unique PROTACs by globally targeting all the three binding sites of BCR–ABL, including dasatinib-, ponatinib-, and asciminib-based PROTACs. Our ponatinib-based PROTACs showed practical activity as dasatinib-based PROTACs, while no reported ponatinib-based PROTACs could degrade BCR–ABL before. As a proof of concept, some additional dasatinib-based PROTACs were then designed to degrade
的BCR-ABL融合癌蛋白引起慢性髓细胞性白血病或pH急性淋巴细胞白血病+患者是因为ABL激酶被组成性激活。但是,目前的ABL抑制剂临床治疗受到耐药性和不良反应的严重限制。尽管已经引入了新兴的靶向蛋白水解的嵌合体(PROTAC)来降解BCR-ABL,但大多数都显示出有限的活性,不能克服常见的耐药突变体,特别是对于T315I突变体。在这里,我们通过全局靶向BCR-ABL的所有三个结合位点,包括基于dasatinib,ponatinib和asciminib的PROTAC,系统地设计了一套独特的PROTAC。我们的基于ponatinib的PROTAC与基于dasatinib的PROTAC相比显示出实际的活性,而以前没有报道的基于ponatinib的PROTAC可以降解BCR-ABL。作为概念验证,然后还设计了一些其他基于达萨替尼的PROTAC,以降解T315I突变体。我们提供了一个全球PROTA