Abstract
Liver cancer annually accounts for over 800,000 cases and 700,000 deaths worldwide. Hepatocellular carcinoma is responsible for over 80% of liver cancer cases. Due to ineffective treatment options and limited surgical interventions, hepatocellular carcinoma is notoriously difficult to treat. Nonetheless, drugs utilized for other medical conditions, such as the antihypertensive medication prazosin, the neuroleptic medication chlorpromazine, and the neuroleptic medication haloperidol, have gained attention for their potential anti-cancer effects. Therefore, this study used these medications for investigating toxicity to hepatocellular carcinoma while testing the adverse effects on a noncancerous liver cell line model THLE-2. After treatment, an XTT cell viability assay, cell apoptosis assay, reactive oxygen species (ROS) assay, apoptotic proteome profile, and western blot were performed. We calculated IC50 values for chlorpromazine and prazosin to have a molar range of 35–65 µM. Our main findings suggest the capability of both of these treatments to reduce cell viability and generate oxidative stress in HepG2 and THLE-2 cells (p value < 0.05). Haloperidol, however, failed to demonstrate any reduction in cell viability revealing no antitumor effect up to 100 µM. Based on our findings, a mechanism of cell death was not able to be established due to lack of cleaved caspase-3 expression. Capable of bypassing many aspects of the lengthy, costly, and difficult cancer drug approval process, chlorpromazine and prazosin deserve further investigation for use in conjunction with traditional chemotherapeutics.
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We would like to thank Missouri State University for the resources and materials provided within their facilities and laboratories.
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This research was funded by Missouri State University Foundation Funds donated by the Nagarajan family.
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Conceptualization, P.N and K.K; methodology, P.N, S.H, and K.K; software, P.N and S.H; validation, P.N, S.H, and K.K; formal analysis, P.N and S.H; investigation, P.N and S.H; resources, P.N and K.K; data curation, P.N and S.H; writing — original draft preparation, P.N; writing — review and editing, P.N, S.H, and K.K; visualization, P.N and S.H; supervision, K.K; project administration, K.K; funding acquisition, P.N and K.K. All authors have read and agreed to the published version of the manuscript.
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Harris, S., Nagarajan, P. & Kim, K. The cytotoxic effects of prazosin, chlorpromazine, and haloperidol on hepatocellular carcinoma and immortalized non-tumor liver cells. Med Oncol 41, 87 (2024). https://doi.org/10.1007/s12032-024-02323-7
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DOI: https://doi.org/10.1007/s12032-024-02323-7