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Discovery of Novel Quinoline-Chalcone Derivatives as Potent Anti-tumor Agents with Microtubule Polymerization Inhibitory Activity.
Journal of Medicinal Chemistry 2018 December 12
A series of novel quinoline-chalcone derivatives were designed, synthesized and evaluated for their antiproliferative activity. Among them, compound 24d exhibited the most potent activity with IC50 values ranging from 0.009 to 0.016 μM in a panel of cancer cell lines. Compound 24d also displayed a good safety profile with LD50 value of 665.62 mg/kg by intravenous injection, and its hydrochloride salt 24d-HCl significantly inhibited tumor growth in H22 xenograft models without observable toxic effects, which was more potent than that of CA-4. Mechanism studies demonstrated that 24d bound to the colchicine site of tubulin, arrested cell cycle at the G2/M phase, induced apoptosis, depolarized mitochondria and induced reactive oxidative stress (ROS) generation in K562 cells. Moreover, 24d has potent in vitro anti-metastasis, in vitro and in vivo anti-vascular activities. Collectively, our findings suggest that 24d deserves to be further investigated as a potent and safe anti-tumor agent for cancer therapy.
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