Download MendeleyOptimization of an Imidazo[1,2- a ]pyridine Series to Afford Highly Selective Type I1/2 Dual Mer/Axl Kinase Inhibitors with In Vivo Efficacy.
McCoull, W., Boyd, S., Brown, M.R., Coen, M., Collingwood, O., Davies, N.L., Doherty, A., Fairley, G., Goldberg, K., Hardaker, E., He, G., Hennessy, E.J., Hopcroft, P., Hodgson, G., Jackson, A., Jiang, X., Karmokar, A., Laine, A.L., Lindsay, N., Mao, Y., Markandu, R., McMurray, L., McLean, N., Mooney, L., Musgrove, H., Nissink, J.W.M., Pflug, A., Reddy, V.P., Rawlins, P.B., Rivers, E., Schimpl, M., Smith, G.F., Tentarelli, S., Travers, J., Troup, R.I., Walton, J., Wang, C., Wilkinson, S., Williamson, B., Winter-Holt, J., Yang, D., Zheng, Y., Zhu, Q., Smith, P.D.(2021) J Med Chem 64: 13524-13539
- PubMed: 34478292
- DOI: https://doi.org/10.1021/acs.jmedchem.1c00920
- Primary Citation of Related Structures:
7OLS, 7OLV, 7OLX - PubMed Abstract:
Inhibition of Mer and Axl kinases has been implicated as a potential way to improve the efficacy of current immuno-oncology therapeutics by restoring the innate immune response in the tumor microenvironment. Highly selective dual Mer/Axl kinase inhibitors are required to validate this hypothesis. Starting from hits from a DNA-encoded library screen, we optimized an imidazo[1,2- a ]pyridine series using structure-based compound design 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 antibodies and ionizing radiation.
Organizational Affiliation:
Oncology R&D, AstraZeneca, Cambridge CB4 0WG, U.K.
