Evaluation of Cytotoxic Activity of New Benzimidazole-Piperazine Hybrids Against Human MCF-7 and A549 Cancer Cells
作者:Aysun Özdemir、Sümeyye Turanli、Burcu Çalişkan、Mustafa Arka、Erden Banoglu
DOI:10.1007/s11094-020-02119-9
日期:2020.2
A series of benzimidazole-piperazine hybrids (14 – 37) were designed, synthesized and evaluated for their cytotoxic activity against human lung (A549) and breast (MCF-7) cancer cell lines. Preliminary evaluation revealed that most of these hybrid molecules (i.e., 16 – 25) exhibited noteworthy and preferential antiproliferative effect against human lung cancer (A549) with IC50 values of 2.8 – 7.8 μM. Among the synthesized molecules, compound 17 showed the most balanced cytotoxic effect against lung (A549) and breast (MCF-7) cancer cells with IC50 values of 5.4 and 4.2 μM, respectively. To explore the mechanistic aspects fundamental to the observed activity, further biological studies of compounds 16, 17 and 22 were carried out. In addition, these compounds induced PARP-1 cleavage and caspase 7 activation, caused morphological changes such as bleb formation in the treated cells, and significantly increased the nuclear fragmentation. Taken all together, our findings indicate that cytotoxic activities of newly synthesized benzimidazole-piperazine hybrids are mediated through the apoptotic cell death induction. These benzimidazole derivatives have the potential for further development as anticancer agents.
一系列苯并咪唑-哌嗪杂化物(14-37)被设计、合成并评估其对人肺(A549)和乳腺(MCF-7)癌细胞系的细胞毒性活性。初步评估显示,大多数这些杂化分子(即16-25)对人肺癌(A549)表现出显著且优先的抗增殖效果,IC50值为2.8-7.8 μM。在合成的分子中,化合物17对肺(A549)和乳腺(MCF-7)癌细胞的细胞毒性效果最为均衡,IC50值分别为5.4和4.2 μM。为了探讨与观察到的活性相关的机制方面,进一步对化合物16、17和22进行了生物学研究。此外,这些化合物诱导了PARP-1裂解和凋亡酶7激活,造成处理细胞的形态变化,如气泡形成,并显著增加了核碎裂。综合来看,我们的研究结果表明,新合成的苯并咪唑-哌嗪杂化物的细胞毒性活性是通过诱导凋亡细胞死亡介导的。这些苯并咪唑衍生物具有进一步开发作为抗癌药物的潜力。