Abstract
Background This study explores the role of apoptosis, autophagy, and oxidative DNA damage in influencing the cytotoxic impact of lycopene on HeLa cells. Material and methods Cell viability following exposure to varying lycopene concentrations was determined using an XTT assay. ELISA measured key cell death proteins (Bax, BCL-2, etc.), while immunofluorescence staining visualized LC3β (autophagy) and 8-oxo-dG (DNA damage). Results Lycopene significantly killed HeLa cells in a dose-dependent way (IC50 = 10 μM). Subsequent examinations conducted with the IC50 dose of lycopene demonstrated a notable elevation in the expression levels of apoptotic proteins, such as cleaved caspase 3, cleaved PARP, and Bax (p < 0.001). Additionally, treatment with this substance led to an increase in the levels of 8-oxo-dG (p < 0.001), a widely acknowledged biomarker indicative of oxidative DNA damage. Furthermore, a significant rise (p < 0.05) in LC3β protein levels, a well-established indicator of autophagy activation, was noted. Conclusion This study suggests lycopene’s potential to fight cervical cancer by triggering programmed cell death (apoptosis) and cellular self-digestion (autophagy). These findings highlight lycopene as a promising candidate for future cervical cancer treatments.
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