Small Molecule Disruptors of the Glucokinase–Glucokinase Regulatory Protein Interaction: 1. Discovery of a Novel Tool Compound for in Vivo Proof-of-Concept
作者:Kate S. Ashton、Kristin L. Andrews、Marion C. Bryan、Jie Chen、Kui Chen、Michelle Chen、Samer Chmait、Michael Croghan、Rod Cupples、Christopher Fotsch、Joan Helmering、Steve R. Jordan、Robert J. M. Kurzeja、Klaus Michelsen、Lewis D. Pennington、Steve F. Poon、Glenn Sivits、Gwyneth Van、Steve L. Vonderfecht、Robert C. Wahl、Jiandong Zhang、David J. Lloyd、Clarence Hale、David J. St. Jean
DOI:10.1021/jm4016735
日期:2014.1.23
Small molecule activators of glucokinase have shown robust efficacy in both preclinical models and humans. However, overactivation of glucokinase (GK) can cause excessive glucose turnover, leading to hypoglycemia. To circumvent this adverse side effect, we chose to modulate GK activity by targeting the endogenous inhibitor of GK, glucokinase regulatory protein (GKRP). Disrupting the GK-GKRP complex
葡萄糖激酶的小分子激活剂在临床前模型和人类中均显示出强大的功效。但是,葡萄糖激酶(GK)的过度激活会导致过多的葡萄糖周转,从而导致低血糖症。为了避免这种不良副作用,我们选择通过靶向GK的内源性抑制剂葡萄糖激酶调节蛋白(GKRP)来调节GK活性。破坏GK-GKRP复合物会导致未结合的胞质GK数量增加,而不会改变酶的固有动力学。本文中,我们报告了通过先前未知的结合口袋有效破坏GK-GKRP相互作用的化合物的鉴定。使用基于结构的方法,初始命中的效力提高到提供25(AMG-1694)。在ZDF大鼠中给药25显示出强大的药效作用以及葡萄糖的统计学显着降低。另外,在高血糖或正常大鼠中均未观察到低血糖。