%0 Journal Article
%T Structural insight into the macrocyclic inhibitor TPX-0022 of c-Met and c-Src.
%A Qu L
%A Lin H
%A Dai S
%A Guo M
%A Chen X
%A Jiang L
%A Zhang H
%A Li M
%A Liang X
%A Chen Z
%A Wei H
%A Chen Y
%J Comput Struct Biotechnol J
%V 21
%N 0
%D 2023
%M 38074469
%F 6.155
%R 10.1016/j.csbj.2023.11.028
%X c-Met has been an attractive target of prognostic and therapeutic studies in various cancers. TPX-0022 is a macrocyclic inhibitor of c-Met, c-Src and CSF1R kinases and is currently in phase I/II clinical trials in patients with advanced solid tumors harboring MET gene alterations. In this study, we determined the co-crystal structures of the c-Met/TPX-0022 and c-Src/TPX-0022 complexes to help elucidate the binding mechanism. TPX-0022 binds to the ATP pocket of c-Met and c-Src in a local minimum energy conformation and is stabilized by hydrophobic and hydrogen bond interactions. In addition, TPX-0022 exhibited potent activity against the resistance-relevant c-Met L1195F mutant and moderate activity against the c-Met G1163R, F1200I and Y1230H mutants but weak activity against the c-Met D1228N and Y1230C mutants. Overall, our study reveals the structural mechanism underlying the potency and selectivity of TPX-0022 and the ability to overcome acquire resistance mutations and provides insight into the development of selective c-Met macrocyclic inhibitors.