Synthesis and Evaluation of Novel Erlotinib-NSAID Conjugates as More Comprehensive Anticancer Agents.
A series of novel anticancer agents were designed and synthesized based on coupling of different nonsteroidal anti-inflammatory drugs (NSAIDs) with the epidermal growth-factor receptor (EGFR) tyrosine kinase inhibitor, erlotinib. Both the antiproliferative and pharmacokinetic activity of the target compounds were evaluated using HCC827 and A431 tumor cell lines. Among the derivatives made, compounds 10a, 10c, and 21g showed superb potency, comparable to that of erlotinib. Furthermore, preliminary SAR analysis showed that when the NSAIDs were conjugated via linkage to C-6 OH versus linkage to C-7 OH of the quinazoline nucleus, superior anticancer activity was achieved. Finally, the in vitro pharmacokinetic profile of several conjugates demonstrated the desired dissociation kinetics as the coupled molecules were effectively hydrolyzed, releasing both erlotinib and the specific NSAID in a time-dependent manner. The conjugation strategy represents a unique and simplified approach toward combination therapy, particularly for the treatment of cancers where both EGFR overexpression and inflammation play a direct role in disease progression.
Drug Discovery Pipeline, Guangzhou Institutes of Biomedicine and Health , Science City, Guangzhou 510530, P. R. China.
Yanmei
Y
Zhang
Drug Discovery Pipeline, Guangzhou Institutes of Biomedicine and Health , Science City, Guangzhou 510530, P. R. China.
Micky D
MD
Tortorella
Drug Discovery Pipeline, Guangzhou Institutes of Biomedicine and Health , Science City, Guangzhou 510530, P. R. China.
Jinxi
J
Liao
Drug Discovery Pipeline, Guangzhou Institutes of Biomedicine and Health , Science City, Guangzhou 510530, P. R. China.
Xiaochu
X
Qin
Drug Discovery Pipeline, Guangzhou Institutes of Biomedicine and Health , Science City, Guangzhou 510530, P. R. China.
Tingting
T
Chen
Drug Discovery Pipeline, Guangzhou Institutes of Biomedicine and Health , Science City, Guangzhou 510530, P. R. China.
Jinfeng
J
Luo
Drug Discovery Pipeline, Guangzhou Institutes of Biomedicine and Health , Science City, Guangzhou 510530, P. R. China.
Jiantong
J
Guan
Euclises Pharmaceuticals , St. Louis, Missouri 63108, United States.
John J
JJ
Talley
Drug Discovery Pipeline, Guangzhou Institutes of Biomedicine and Health , Science City, Guangzhou 510530, P. R. China.
Zhengchao
Z
Tu
COX; EGFR; Erlotinib; NSAIDs; cancer; conjugate