N1-Substituted benzimidazole scaffold for farnesoid X receptor (FXR) agonists accompanying prominent selectivity against vitamin D receptor (VDR)
作者:Arisa Masuda、Keigo Gohda、Yusuke Iguchi、Ko Fujimori、Yukiko Yamashita、Keisuke Oda、Mizuho Une、Naoki Teno
DOI:10.1016/j.bmc.2020.115512
日期:2020.7
Our efforts focusing on increasing the agonist properties towards FXR led to the discovery of 19, which activates FXR at and below nanomolar levels (EC50 = 26.5 ± 10.5 nM TR-FRET and 0.8 ± 0.2 nM luciferase, respectively) and functions as a FXR agonist: the affinity toward FXR over eight nuclear receptors, including VDR [IC50 (VDR) / EC50 (FXR) > 5000] and TGR5, effects FXR target genes, and activates
作为一种细胞胆汁酸传感器,法呢素X受体(FXR)参与胆汁酸,脂质和葡萄糖体内稳态以及肝脏保护的调节。关于骨骼代谢,FXR通过骨骼形成和骨骼重塑途径的吸收来积极调节骨骼代谢。一些具有异恶唑部分的FXR激动剂正在接受临床试验,以治疗非酒精性脂肪性肝炎。因此,迄今为止,FXR的激活引起了对FXR作为潜在治疗靶标的极大兴趣。我们确定了一系列带有N 1的非甾体FXR激动剂-与芳族衍生物桥接的-甲基苯并咪唑和异恶唑部分。他们对FXR表现出亲和力,但对维生素D受体(VDR)的亲和力却很弱,这涉及钙和磷酸盐稳态的调节,并被胆汁酸激活。因此,没有针对VDR的脱靶活性的FXR激动剂的部署对于FXR配体的开发至关重要。我们致力于增加对FXR的激动剂特性的努力导致了19的发现,它可以在纳摩尔水平或更低的纳摩尔水平(分别为EC 50 = 26.5±10.5 nM TR-FRET和0.8±0.2 nM荧光素酶)激活F