Discovery of novel USP8 inhibitors via Ubiquitin-Rho-110 fluorometric assay based high throughput screening
作者:Jie Han、Yucheng Tian、Liang Yu、Qilin Zhang、Xi Xu、Yichao Zhang、Jubo Wang、Zengyi Ma、Jinlei Bian、Cheng Luo、Hualiang Jiang、Kaixian Chen、Yao Zhao、Zhiyu Li、Hong Ding
DOI:10.1016/j.bioorg.2020.103962
日期:2020.8
Ubiquitin-rhodamine-110 (Ubiquitin-Rho-110) fluorometric activity assay, we discovered a novel inhibitor DC-U43. By structure optimization, DC-U43-10 reached a half-maximal inhibitory concentration (IC50) value of 2.6 ± 1.1 μM and exhibited 10-fold selectivity against USP7. The binding between DC-U43-10 and USP8 was validated by surface plasmon resonance (SPR) assay with a KD value of 10.5 ± 3.7 μM. It also
USP8是去泛素化酶(DUB)家族的成员之一,可维持EGFR的泛素化水平并调节下游信号通路。USP8的失调已经牵涉到许多人类疾病,尤其是癌症。因此,USP8已被确定为药物设计的有希望的目标。在此,通过基于泛素-罗丹明-110(泛素-Rho -110)荧光活性测定的高通量筛选,我们发现了新型抑制剂DC-U43。通过结构优化,DC-U43-10的半数抑制浓度(IC 50)值为2.6± 1.1μM,对USP7的选择性为10倍。DC-U43-10与USP8之间的结合通过表面等离振子共振(SPR)分析验证,K D值为10.5±3.7μM。它还抑制了H1975细胞的集落形成。因此,DC-U43-10代表了一种具有新型支架的USP8抑制剂,具有作为USP8相关学术和临床研究探针的广阔前景。