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- W2033699396 abstract "Abstract Formation of microtubules is a dynamic process that involves polymerization and depolymerization of αβ-tubulin heterodimers. Drugs that enhance or inhibit tubulin polymerization can destroy this dynamic process, arresting cells in the G2/M phase of the cell cycle. Although drugs that target tubulin generally demonstrate cytotoxic potency in the subnanomolar range, resistance due to drug efflux is a common phenomenon among the antitubulin agents. We recently reported a class of 4-substituted methoxybenzoyl-aryl-thiazoles (SMART) that exhibited great in vitro potency and broad spectrum cellular cytotoxicity. Evaluation of the in vitro and in vivo anticancer activities of 3 SMART compounds, SMART-H (H), SMART-F (F), and SMART-OH (OH), with varying substituents at the 4-position of aryl ring, demonstrated that they bind potently to the colchicine-binding site in tubulin, inhibit tubulin polymerization, arrest cancer cells in G2/M phase of the cell cycle, and induce their apoptosis. The SMART compounds also equipotently inhibit the growth of parental and MDR-overexpressing cells in vitro, indicating that they can overcome multidrug resistance. In vivo antitumor efficacy studies in human prostate (PC-3) and melanoma (A375) cancer xenograft models demonstrated that SMART-H and SMART-F treatments resulted in %T/C values ranging from 4% to 30%. In addition, in vivo SMART-H treatment for 21days at the higher dose (15 mg/kg) failed to produce any apparent neurotoxicity. These studies provide the first in vivo evidence and proof-of-concept that SMART compounds are similarly efficacious to currently FDA approved antitubulin drugs for cancer treatment, but they can circumvent P-glycoprotein-mediated drug resistance. Cancer Res; 71(1); 216–24. ©2010 AACR." @default.
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- W2033699396 date "2011-01-01" @default.
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- W2033699396 title "Biological Activity of 4-Substituted Methoxybenzoyl- Aryl-Thiazole: An Active Microtubule Inhibitor" @default.
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- W2033699396 doi "https://doi.org/10.1158/0008-5472.can-10-1725" @default.
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