Comparative analysis of the dual EGFR-DNA targeting and growth inhibitory properties of 6-mono-alkylamino- and 6,6-dialkylaminoquinazoline-based type II combi-molecules
作者:Julie Schmitt、Elliot Goodfellow、Shanlong Huang、Christopher Williams、Izabela N.F. Gomes、Marcela N. Rosa、Rui M. Reis、Richard Yang、Hatem M. Titi、Bertrand J. Jean-Claude
DOI:10.1016/j.ejmech.2020.112185
日期:2020.4
Over the past decade, we described a novel tumour targeted approach that sought to design "combimolecules" to hit two distinct targets in tumour cells. Here, to generate small combi-molecules with strong DNA damaging potential while retaining EGFR inhibitory potency, we developed the first synthetic strategy to access the 6-N, N-disubstituted quinazoline scaffold and designed JS61 to possess a nitrogen mustard function directly attached to the 6-position of the quinazoline ring. We compared its biological activity with that of structures containing either a hemi mustard or a non-alkylating substituent. Surprisingly, the results showed that JS61, while capable of inducing strong DNA damage, exhibited moderate EGFR inhibitory potency. In contrast, "combi-molecules" with no bulky substituent at the N-6 position (e.g. ZR2002 and JS84) showed stronger EGFR and growth inhibitory potency than JS61 in a panel of lung cancer cells. To rationalize these results, X-ray crystallography and molecular modeling studies were undertaken, and the data obtained indicated that bulkiness of the 6-N,N-disubstituted moieties hinder its binding to the ATP site and affects binding reversibility. (c) 2020 Published by Elsevier Masson SAS.