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Updated: Jul 28, 2026
Cell Death Associated with Abnormal Mitosis Observed by Confocal Imaging in Live Cancer Cells
Published on: August 21, 2013
An analysis of mitotic catastrophe induced cell responses in melanoma cells exposed to flubendazole
1Department of Medical Biology and Genetics, Charles University, Faculty of Medicine in Hradec Králové, Czech Republic.
Abstract:
Mitotic catastrophe induced by mictotubule-targeting drugs such as benzimidazole carbamates has been demonstrated to be an efficient mechanism for suppression of tumor cells growth and proliferation, with variable resulting endpoints. The present study was designed to explore some of these endpoints; i.e. the apoptosis as well as autophagy and their related signaling in several stabilized cell lines as well as human explant melanoma cells treated with flubendazole (FLU). FLU-induced mitotic catastrophe resulted in mitochondrial and caspase-dependent apoptosis, which occurred at various rates in all treated cells during 96 h of treatment. The process was characterized by enhanced transcriptional activity of TP53 and NF-κB as well as upregulated Noxa expression. Also, inactivation of Bcl-2, BclXL and Mcl-1 proteins by JNK mediated phosphorylation was observed. Although increased autophagic activity took place in treated cells too, no discernible functional linkage with ongoing cell death process was evidenced. Together these results advance our evidence over the effectiveness of FLU cytotoxicity-related killing of melanoma cells while calling for more extensive testing of melanoma samples as a prerequisite of further preclinical evaluation of FLU antineoplastic potential.
Insights
Flubendazole (FLU) effectively induces mitotic catastrophe and apoptosis in melanoma cells, offering a potential anti-cancer treatment. Further preclinical evaluation is recommended to explore its full antineoplastic potential.
Area of Science:
- Oncology
- Cell Biology
- Pharmacology
Background:
- Microtubule-targeting drugs induce mitotic catastrophe for cancer cell growth suppression.
- Benzimidazole carbamates are a class of such drugs with variable effects.
- Understanding specific cellular responses like apoptosis and autophagy is crucial.
Purpose of the Study:
- To investigate the apoptosis and autophagy signaling pathways induced by flubendazole (FLU) in melanoma cells.
- To explore the endpoints of FLU-induced mitotic catastrophe in various cell lines and human melanoma explants.
- To assess the potential of FLU as an antineoplastic agent.
Main Methods:
- Treatment of stabilized cell lines and human explant melanoma cells with flubendazole (FLU).
- Analysis of apoptosis, autophagy, and related signaling pathways (TP53, NF-κB, Noxa, Bcl-2 family proteins, JNK).
- Monitoring cellular responses over a 96-hour treatment period.
Main Results:
- Flubendazole induced mitochondrial and caspase-dependent apoptosis in all treated cells.
- TP53 and NF-κB transcriptional activity increased, with upregulated Noxa expression.
- JNK-mediated phosphorylation inactivated Bcl-2, BclXL, and Mcl-1 proteins.
- Autophagic activity increased, but no direct link to cell death was observed.
Conclusions:
- Flubendazole demonstrates cytotoxic effectiveness in killing melanoma cells via apoptosis.
- The study provides evidence for FLU's antineoplastic potential.
- Further extensive testing on melanoma samples is necessary before preclinical evaluation.
