Discovery of a First-in-Class Gut-Restricted RET Kinase Inhibitor as a Clinical Candidate for the Treatment of IBS
作者:Hilary Schenck Eidam、John Russell、Kaushik Raha、Michael DeMartino、Donghui Qin、Huiping Amy Guan、Zhiliu Zhang、Gong Zhen、Haiyu Yu、Chengde Wu、Yan Pan、Gerard Joberty、Nico Zinn、Sylvie Laquerre、Sharon Robinson、Angela White、Amanda Giddings、Ehsan Mohammadi、Beverly Greenwood-Van Meerveld、Allen Oliff、Sanjay Kumar、Mui Cheung
DOI:10.1021/acsmedchemlett.8b00035
日期:2018.7.12
to the discovery of a first-in-class, gut-restricted RET kinase inhibitor, 2-(4-(4-ethoxy-6-oxo-1,6-dihydropyridin-3-yl)-2-fluorophenyl)-N-(5-(1,1,1-trifluoro-2-methylpropan-2-yl)isoxazol-3-yl)acetamide (15, GSK3179106), as a clinical candidate for the treatment of IBS. GSK3179106 is a potent, selective, and gut-restricted pyridone hinge binder small molecule RET kinase inhibitor with a RET IC50 of
腹痛和排便习惯异常是肠易激综合症(IBS)患者治疗不当的主要症状。尽管IBS的病因尚不完全清楚,但胃肠道(GI)的许多功能是由肠神经系统(ENS)调节的。炎症或应激诱导的生长因子或细胞因子的表达可能导致胃肠道内脏传入神经元过度神经支配,并有助于IBS的病理生理。转染(RET)期间重新排列的神经元生长因子受体酪氨酸激酶对ENS的发展至关重要,例如Hirschsprung患者携带RET功能丧失突变且缺乏正常的结肠神经支配导致结肠梗阻。相似地,成人ENS中的RET信号通过促进突触形成,信号传递和神经元可塑性来维持神经元功能。ENS中RET的抑制代表了一种新的神经元功能和IBS患者症状正常化的治疗策略。本文中,我们描述了我们的筛选工作以及随后的结构-活性关系(SAR),以优化该系列的效价,选择性和诱变性,从而发现了首屈一指的肠道限制性RET激酶抑制剂2- (4-(4-乙氧基-6-氧代-1,6-二氢