4.4 Article

Design, syntheses and antitumor activities evaluation of 1,5-diaryl substituted pyrazole secnidazole ester derivatives

Journal

JOURNAL OF HETEROCYCLIC CHEMISTRY
Volume 58, Issue 8, Pages 1656-1664

Publisher

WILEY
DOI: 10.1002/jhet.4302

Keywords

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Funding

  1. Guangxi Natural Science Foundation [2018GXNSFAA138123]
  2. National Natural Science Foundation of China [21961008, 21771043]

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Novel 1,5-diaryl substituted pyrazole secnidazole ester derivatives exhibited promising inhibitory activities against multiple tumor cell lines, with lower IC50 values against liver tumor cells. These compounds show potential in the field of anticancer treatment and demonstrate relative safety for normal cell lines.
According to the drug hybridization principle, a series of novel 1,5-diaryl substituted pyrazole secnidazole ester derivatives (6aa-6gc) have been synthesized by the combinations of various 1,5-diarylpyrazole-3-carboxylic acids with secnidazole. The in vitro antitumor/cytotoxicities activities against tumor and normal cell lines, including NCI-H460 (lung tumor cell), MCG-803 (gastric tumor cell), Skov-3 (ovarian tumor cell), BEL-7404 (liver tumor cell) and HL-7702 (normal liver cell), have been evaluated using MTT assay. All compounds showed promising inhibitory activities against four tumor cell lines. The IC50 of 6bc against the BEL-7404 cell was 2.03 mu M, and those of 6fc against the NCI-H460, MCG-803 and Skov-3 were 1.34, 0.14, and 0.87 mu M, respectively. All these values were much lower than those of the cisplatin. Furthermore, 6fc and 6bc were also verified to be considerably safe for normal human liver cell, since the lower IC50 values than cisplatin. Based on these results, the cell cycle analysis, apoptosis ratio detection and mitochondrial membrane potential assay of 6fc and 6bc were further performed aiming to investigate their inhibition mechanism of BEL-7404 cells. It is revealed that they have effectively inhibited the cell growth by arresting the BEL-7404 cells at S phase and induced apoptosis through the mitochondria-mediated pathway.

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