Rapid Discovery and Structure–Activity Relationships of Pyrazolopyrimidines That Potently Suppress Breast Cancer Cell Growth via SRC Kinase Inhibition with Exceptional Selectivity over ABL Kinase
作者:Craig Fraser、John C. Dawson、Reece Dowling、Douglas R. Houston、Jason T. Weiss、Alison F. Munro、Morwenna Muir、Lea Harrington、Scott P. Webster、Margaret C. Frame、Valerie G. Brunton、E. Elizabeth Patton、Neil O. Carragher、Asier Unciti-Broceta
DOI:10.1021/acs.jmedchem.6b00065
日期:2016.5.26
Novel pyrazolopyrimidines displaying high potency and selectivity toward SRC family kinases have been developed by combining ligand-based design and phenotypic screening in an iterative manner. Compounds were derived from the promiscuous kinase inhibitor PP1 to search for analogs that could potentially target a broad spectrum of kinases involved in cancer. Phenotypic screening against MCF7 mammary
通过以迭代方式结合基于配体的设计和表型筛选,已开发出对 SRC 家族激酶具有高效力和选择性的新型吡唑并嘧啶。化合物来源于混杂激酶抑制剂 PP1,以寻找可能靶向与癌症相关的广谱激酶的类似物。针对 MCF7 乳腺腺癌细胞的表型筛选产生了与靶标无关的结构-活性关系,使后续设计偏向于乳腺癌治疗而不是特定靶标。该策略导致发现了两种具有表型不同抗癌作用模式的强效抗增殖先导物。激酶分析和进一步优化产生了 eCF506,第一个对 SRC 具有亚纳摩尔 IC50 的小分子,需要 3 个数量级的浓度才能抑制 ABL。eCF506 具有出色的水溶性、最佳的 DMPK 特性和口服生物利用度,可阻止斑马鱼胚胎中 SRC 相关的神经丘迁移,而不会引起危及生命的心脏缺陷,并抑制小鼠肿瘤异种移植物中的 SRC 磷酸化。