Discovery and Structure-Based Optimization of Benzimidazole-Derived Activators of SOS1-Mediated Nucleotide Exchange on RAS
作者:Timothy R. Hodges、Jason R. Abbott、Andrew J. Little、Dhruba Sarkar、James M. Salovich、Jennifer E. Howes、Denis T. Akan、Jiqing Sai、Allison L. Arnold、Carrie Browning、Michael C. Burns、Tammy Sobolik、Qi Sun、Yugandhar Beesetty、Jesse A. Coker、Dirk Scharn、Heinz Stadtmueller、Olivia W. Rossanese、Jason Phan、Alex G. Waterson、Darryl B. McConnell、Stephen W. Fesik
DOI:10.1021/acs.jmedchem.8b01108
日期:2018.10.11
Son of sevenless homologue 1 (SOS1) is a guanine nucleotide exchange factor that catalyzes the exchange of GDP for GTP on RAS. In its active form, GTP-bound RAS is responsible for numerous critical cellular processes. Aberrant RAS activity is involved in ∼30% of all human cancers; hence, SOS1 is an attractive therapeutic target for its role in modulating RAS activation. Here, we describe a new series
七分之一同源基因1(SOS1)的儿子是鸟嘌呤核苷酸交换因子,它催化RAS上的GTP交换GDP。GTP结合的RAS以其活跃的形式负责众多关键的细胞过程。约30%的人类癌症都涉及RAS异常活动。因此,SOS1因其在调节RAS激活中的作用而成为有吸引力的治疗靶标。在这里,我们描述了一系列新的苯并咪唑衍生的SOS1激动剂。使用结构指导的设计,我们发现了小分子,可在亚微摩尔浓度下增加RAS在体外的核苷酸交换,以低的两位数纳摩尔亲和力与SOS1结合,迅速增强细胞RAS-GTP水平,并在ERK磷酸化中引起双相信号变化。 1/2。这些化合物代表了迄今为止报道的最有效的SOS1激动剂系列。