Synthesis and Biological Evaluation of Halogenated Phenoxychalcones and Their Corresponding Pyrazolines As Cytotoxic Agents in Human Breast Cancer
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Novel halogenated phenoxychalcones and their corresponding -acetylpyrazolines were synthesised and evaluated for their anticancer activities against breast cancer cell line (MCF-7) and normal breast cell line (MCF-10a), compared with staurosporine. All compounds showed moderate to good cytotoxic activity when compared to control. Compound was the most active, with IC = 1.52 µM and selectivity index = 15.24. Also, chalcone showed significant cytotoxic activity with IC = 1.87 µM and selectivity index = 11.03. Compound decreased both total mitogen activated protein kinase (p38α MAPK) and phosphorylated enzyme in MCF-7 cells, suggesting its ability to decrease cell proliferation and survival. It also showed the ability to induce ROS in MCF-7 treated cells. Compound exhibited apoptotic behaviour in MCF-7 cells due to cell accumulation in G2/M phase and elevation in late apoptosis 57.78-fold more than control. Docking studies showed that compounds and interact with p38alpha MAPK active sites.
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