Discovery and pharmacological characterization of a novel benzimidazole TRPV4 antagonist with cyanocyclobutyl moiety
作者:Chongyi Ai、Zhuang Wang、Pengyun Li、Mengyuan Wang、Wenjuan Zhang、Huijuan Song、Xu Cai、Kai Lv、Xingjuan Chen、Zhibing Zheng
DOI:10.1016/j.ejmech.2023.115137
日期:2023.3
antagonist discovered by GSK, displayed potent in vitro TRPV4 inhibition activity, and demonstrated ability to inhibit TRPV4-mediated pulmonary edema in an in vivo rat model. In this study, a series of GSK-Bz derivatives were designed and synthesized based on our previous findings. Compound 2b with cyanocyclobutyl moiety (IC50 = 22.65 nM) was found to be 5.3-fold more potent than GSK-Bz (IC50 = 121.6 nM) in
GSK-Bz 是 GSK 发现的一种 TPRV4 拮抗剂,在体外显示出有效的TRPV4 抑制活性,并在体内大鼠模型中证明能够抑制 TRPV4 介导的肺水肿。在本研究中,基于我们之前的发现设计并合成了一系列 GSK-Bz 衍生物。 在钙成像实验中,发现具有氰基环丁基部分的化合物2b (IC 50 = 22.65 nM) 比 GSK-Bz (IC 50 = 121.6 nM) 强 5.3 倍。膜片钳实验证实,化合物2b(IR = 77.1%)也显着提高了在 -60 mV 下测量的 TRPV4 电流的效力。此外,2b有效抑制 HUVEC 中对 LPS 的渗透性反应,细胞毒性可忽略不计 (CC 50 > 100 μM)。化合物2b对急性肺损伤的体内保护作用最终在 LPS 诱导的 ALI 小鼠模型中进行了评估。值得注意的是,2b在所有测试指标(肺W/D比值、BALF蛋白浓度和病理评分)上均取得了优