Identification of potent and selective inhibitors of PKR via virtual screening and traditional design
作者:K.P. Cusack、M.A. Argiriadi、T.D. Gordon、C.M. Harris、J.M. Herold、M.Z. Hoemann、B.D. Yestrepsky
DOI:10.1016/j.bmcl.2022.129047
日期:2023.1
molecules such as the tricyclic oxindole C16 are clouded by the poor selectivity profile of this ATP-competitive, Type I kinase inhibitor. Type II kinase leads such as the benzothiophene or pyrazolopyrimidine scaffolds from literature are equally poor in their selectivity profiles. As such, it became necessary to identify more potent and selective chemical matter to better understand PKR biology. A dual approach
蛋白激酶 RNA 激活 (PKR) 抑制被认为与免疫学相关,因为它有可能减少巨噬细胞和树突细胞对细菌的反应及其在 TNFα 下游的信号传导。PKR 还与神经科学适应症有关,例如阿尔茨海默病,因为它被双链 DNA (dsDNA) 病毒 HSV1 激活,这种病毒被认为在 AD 的发展中很重要。探索 PKR 与现有工具分子(如三环羟吲哚 C16)的机制作用的研究因这种 ATP 竞争性 I 型激酶抑制剂的选择性差而蒙上阴影。II 型激酶先导物,例如文献中的苯并噻吩或吡唑并嘧啶支架,其选择性特征同样较差。像这样,有必要确定更有效和更具选择性的化学物质,以更好地了解 PKR 生物学。采取了双重方法。该策略的第一步包括对 AbbVie 化合物集合进行虚拟筛选。寻求结合基于药效团和基于 GPU 形状的筛选,以从混杂的先导物中识别选择性化学物质。该策略的第二步遵循传统的化合物设计。此步骤从具有 PKR 交叉