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Background: Metal nanoparticles (NPs) have widely been investigated due to their several applications in therapeutic activities. The current investigation highlights the cytotoxic effects of the eco-friendly phytosynthesis route for silver nanoparticles using Lythrum salicaria (L. salicaria) extract (AgNPs-LS).
Methods And Results: The change in color from colorless to brown confirmed the reduction of silver ions to AgNPs. x-ray diffraction (XRD) analysis demonstrated high crystallinity. The surface morphology of AgNPs-LS was spherical, and their average sizes were 50 nm. energy-dispersive x-ray analysis (EDAX) confirmed that silver was the predominant component, indicating the involvement of L. salicaria plant extract in the green synthesis process. In vitro dimethyl thiazolyl tetrazolium bromide (MTT) assay showed significant cytotoxicity of AgNPs-LS against MCF7 cells, with an IC of 113 µg mL. In contrast, AgNPs-LS showed minimal cytotoxicity to HEK293 cells (IC: 254 µg mL), demonstrating a higher sensitivity of cancer cells to AgNPs-LS. Moreover, AgNPs-LS resulted in MCF7 cells producing reactive oxygen species (ROS) and undergoing cell cycle arrest at the G2/M phase, serving as barriers to the proliferation of cancer cells. Annexin V fluorescein isothiocyanate (FITC) assays and fluorescence microscopy confirmed the induction of apoptosis in MCF7 cells by AgNPs-LS. Gene expression analysis revealed upregulated pro-apoptotic genes (Bax, p53, caspase-3, and caspase-9) and downregulated an anti-apoptotic gene (Bcl2) in michigan cancer foundation7 (MCF7) cells treated with AgNPs-LS.
Conclusion: These results indicate that AgNPs-LS induced apoptosis via the intrinsic pathway (mitochondrial-mediated mechanism) and involved p53-dependent regulation. The current study results implied that AgNPs-LS fabricated by a bio-green approach could be helpful to the future of nanomedicine.
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| http://dx.doi.org/10.1007/s11033-024-10092-9 | DOI Listing |
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