Design, synthesis, and antiproliferative evaluation of novel coumarin/2-cyanoacryloyl hybrids as apoptosis inducing agents by activation of caspase-dependent pathway

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Abstract

A series of novel coumarin/2-cyanoacryloyl hybrids were prepared and evaluated for their in vitro anticancer activity. Among them, two analogs 5p and 5q showed promising antiproliferative activity against a panel of cancer cell lines, including A549, H157, HepG2, MCF7, MG63, and U2OS. Particularly, 5q showed the most potent activity towards MG63 cells with an IC50 value of 5.06 ± 0.25 µM. Morphological observation and 4,6-diamidino-2-phenylindole (DAPI) staining assay showed that 5q-treated MG63 cells displayed significant apoptosis characteristics. Moreover, flow cytometric detection of phosphatidylserine externalization revealed that 5q induced MG63 apoptosis in a dose-dependent manner. Real-time PCR and western blot assay further confirmed that 5q had strong effects to induce MG63 cell apoptosis, suggesting that the action was associated with down-regulation of the anti-apoptotic protein Bcl-2, upregulation of pro-apoptotic protein Bax, and induced activation of caspase-3, 8, and 9. The present results provide a new chemotype for anticancer drug development and continuing investigation into candidates with coumarin/2-cyanoacryloyl scaffold is warranted.

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Zhang, Y. Y., Zhang, Q. Q., Song, J. L., Zhang, L., Jiang, C. S., & Zhang, H. (2018). Design, synthesis, and antiproliferative evaluation of novel coumarin/2-cyanoacryloyl hybrids as apoptosis inducing agents by activation of caspase-dependent pathway. Molecules, 23(8). https://doi.org/10.3390/molecules23081972

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