Optimization of an Imidazo[1,2-<i>a</i>]pyridine Series to Afford Highly Selective Type I1/2 Dual Mer/Axl Kinase Inhibitors with <i>In Vivo</i> Efficacy
作者:William McCoull、Scott Boyd、Martin R. Brown、Muireann Coen、Olga Collingwood、Nichola L. Davies、Ann Doherty、Gary Fairley、Kristin Goldberg、Elizabeth Hardaker、Guang He、Edward J. Hennessy、Philip Hopcroft、George Hodgson、Anne Jackson、Xiefeng Jiang、Ankur Karmokar、Anne-Laure Lainé、Nicola Lindsay、Yumeng Mao、Roshini Markandu、Lindsay McMurray、Neville McLean、Lorraine Mooney、Helen Musgrove、J. Willem M. Nissink、Alexander Pflug、Venkatesh Pilla Reddy、Philip B. Rawlins、Emma Rivers、Marianne Schimpl、Graham F. Smith、Sharon Tentarelli、Jon Travers、Robert I. Troup、Josephine Walton、Cheng Wang、Stephen Wilkinson、Beth Williamson、Jon Winter-Holt、Dejian Yang、Yuting Zheng、Qianxiu Zhu、Paul D. Smith
DOI:10.1021/acs.jmedchem.1c00920
日期:2021.9.23
to improve potency and reduce lipophilicity, resulting in a highly selective in vivo probe compound 32. We demonstrated dose-dependent in vivo efficacy and target engagement in Mer- and Axl-dependent efficacy models using two structurally differentiated and selective dual Mer/Axl inhibitors. Additionally, in vivo efficacy was observed in a preclinical MC38 immuno-oncology model in combination with anti-PD1
Mer 和 Axl 激酶的抑制被认为是通过恢复肿瘤微环境中的先天免疫反应来提高当前免疫肿瘤治疗效果的潜在方法。需要高度选择性的双 Mer/Axl 激酶抑制剂来验证这一假设。从 DNA 编码文库筛选的命中开始,我们使用基于结构的化合物设计优化了咪唑并[1,2- a ]吡啶系列,以提高效力并降低亲脂性,从而产生了高度选择性的体内探针化合物32 。我们使用两种结构差异化和选择性的双 Mer/Axl 抑制剂在 Mer 和 Axl 依赖性功效模型中证明了剂量依赖性体内功效和靶点参与。此外,在临床前 MC38 免疫肿瘤学模型中观察到与抗 PD1 抗体和电离辐射相结合的体内疗效。