Non-peptidic immunoproteasome β5i-selective inhibitor as potential treatment for idiopathic pulmonary fibrosis: Virtual screening, hit evolution and lead identification
作者:Yunxuan Li、Guanglei Nan、Xianxin Hou、Yechao Yan、Yajun Yang、Ying Yang、Ke Li、Zhiyan Xiao
DOI:10.1016/j.ejmech.2023.115856
日期:2023.12
The immunoproteasome has emerged as a potential therapeutic target for idiopathic pulmonary fibrosis (IPF). We report herein our efforts to discover novel non-peptidic immunoproteasome inhibitors as potential treatment for IPF. A structure-based virtual screening was initially performed and the hit compound VS-7 with an IC50 of 9.437 μM against β5i was identified. Hit evolution based on the interaction
免疫蛋白酶体已成为特发性肺纤维化(IPF)的潜在治疗靶点。我们在此报告我们努力发现新型非肽免疫蛋白酶体抑制剂作为 IPF 的潜在治疗方法。最初进行了基于结构的虚拟筛选,并鉴定了针对 β5i 的IC 50为 9.437 μM的命中化合物VS-7 。基于VS-7相互作用模式的命中进化继续进行,并 获得了具有良好亚基选择性特征的有效 β5i 抑制剂54 (IC 50 = 8.463 nM)。化合物54还对 TNF-α 和 IL-6 的释放、NF-κB 的转录活性以及 TGF-β1 诱导的成纤维细胞增殖、活化和胶原蛋白合成产生显着影响。值得注意的是,当在博莱霉素诱导的 IPF 小鼠模型中以 30 mg/kg 给药时,化合物54显示出与临床药物尼达尼布相当的抗纤维化作用。结果表明,选择性抑制免疫蛋白酶体可能是治疗IPF的有效方法。