Mitochondrial Dysfunction and Induction of Apoptosis in Hepatocellular Carcinoma and Cholangiocarcinoma Cell Lines by
Reem J Abdualmjid1, Consolato M Sergi1,2
1Department of Lab. Medicine and Pathology, University of Alberta, Edmonton, AB T6G 2B7, Canada.
Abstract:
Thymoquinone (TQ), a plant-based bioactive constituent derived from the volatile oil of Nigella sativa, has been shown to possess some anti-neoplastic activities. The present study aimed to investigate the mitochondria and apoptosis observed when TQ is applied against hepatocellular carcinoma (HepG2) and cholangiocarcinoma (HuCCT1) cells, two of the most common primary tumors of the liver. All cell lines were treated with increasing concentrations of TQ for varying durations. The anti-proliferative effect of TQ was measured using the methoxyphenyl-2-(4-sulfophenyl)-2H-tetrazolium (MTS) assay and resulted in dose- and time-dependent growth inhibition in both cell lines. Cell cycle, apoptosis, and assessment of mitochondria viability by morphology assessment and evaluation of the mitochondrial membrane potential were investigated. The present study confirms that TQ caused cell cycle arrest at different phases and induced apoptosis in both cell lines. A systematic review of rodent animal models was also carried out. Overall, our data seem to represent the most robust results, suggesting that TQ possesses promising therapeutic potential as an anti-tumor agent for the treatment of hepatocellular carcinoma and cholangiocarcinoma.
Insights
Thymoquinone (TQ) inhibits liver cancer cell growth and induces apoptosis. This natural compound shows significant therapeutic potential against hepatocellular carcinoma and cholangiocarcinoma.
Area of Science:
- Biochemistry
- Molecular Biology
- Oncology
Background:
- Hepatocellular carcinoma (HCC) and cholangiocarcinoma (CCA) are primary liver cancers with limited treatment options.
- Thymoquinone (TQ), derived from Nigella sativa, exhibits anti-neoplastic properties.
- Investigating TQ's effects on liver cancer cell mitochondria and apoptosis is crucial for therapeutic development.
Approach:
- TQ was applied to hepatocellular carcinoma (HepG2) and cholangiocarcinoma (HuCCT1) cell lines at varying concentrations and durations.
- Anti-proliferative effects were assessed using the MTS assay.
- Cell cycle progression, apoptosis, and mitochondrial viability (morphology, membrane potential) were analyzed.
Key Points:
- TQ demonstrated dose- and time-dependent inhibition of HepG2 and HuCCT1 cell proliferation.
- TQ induced cell cycle arrest in both cancer cell lines.
- TQ triggered apoptosis and affected mitochondrial viability in liver cancer cells.
Conclusions:
- Thymoquinone exhibits significant anti-tumor activity against hepatocellular carcinoma and cholangiocarcinoma cells.
- TQ induces cell cycle arrest and apoptosis, highlighting its therapeutic potential.
- Further research into TQ as an anti-cancer agent for liver tumors is warranted.
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