Abstract
Piperazine scaffolds or 2-azetidinone pharmacophores have been reported to show anti-cancer activities and apoptosis induction in different types of cancer cells. However, the mechanistic studies involve in induction of apoptosis addressing these two moieties for human cervical cancer cells remain uncertain. The present study emphasizes on the anti-proliferating properties and mechanism involved in induction of apoptosis for these structurally related azoles derivatives in HeLa cancer cells. 1-Phenylpiperazine clubbed with 2-azetidione derivatives (5a–5h) were synthesized, characterized using various spectroscopic techniques and evaluated for their in-vitro anti-proliferative activities and induction of apoptosis. Further, we also evaluated oxidative stress generated by these synthetic derivatives (5a–5h). Cell viability studies revealed that among all, the compound N-(3-chloro-2-(3-nitrophenyl)-4-oxoazetidin-1-yl)-2-(4-phenylpiperazin-1-yl) acetamide 5e remarkably inhibited the growth of HeLa cells in a concentration dependent manner having IC50 value of 29.44 ± 1.46 µg/ml. Morphological changes, colonies suppression and inhibition of migration clearly showed the antineoplasicity in HeLa cells treated with 5e. Simultaneously, phosphatidylserine externalization, DNA fragmentation and cell-cycle arrest showed ongoing apoptosis in the HeLa cancer cells induced by compound 5e in concentration dependent manner. Additionally, generation of intracellular ROS along with the decrease in mitochondrial membrane potential supported that compound 5e caused oxidative stress resulting in apoptosis through mitochondria mediated pathway. Elevation in the level of cytochrome c and upregulation in expression of caspase-3 clearly indicated the involvement of the intrinsic pathway of programmed cell death. In brief; compound 5e could serve as a promising lead for the development of an effective antitumor agent.
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Abbreviations
- MTT:
-
3-(4,5-Dimethylthiazol-2-yl)-2.5-diphenyl-tetrazolium bromide
- DCFH-DA:
-
2′,7′-Dichlorofluorescin diacetate
- AO:
-
Acridine organe
- ROS:
-
Reactive oxygen species
- MMP:
-
Mitochondrial membrane potential
- RPMI:
-
Roswell Park Memorial Institute medium
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The research work has been funded by UGC (F no-43-172/2014 (SR)).
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Includes NMR spectral analysis and bar graph for cell viability assay (Figs. S.1, S.2, S.3, S.4 and S.5). (DOCX 7879 KB)
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Khanam, R., Kumar, R., Hejazi, I.I. et al. Piperazine clubbed with 2-azetidinone derivatives suppresses proliferation, migration and induces apoptosis in human cervical cancer HeLa cells through oxidative stress mediated intrinsic mitochondrial pathway. Apoptosis 23, 113–131 (2018). https://doi.org/10.1007/s10495-018-1439-x
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DOI: https://doi.org/10.1007/s10495-018-1439-x