Related Experiment Video
Updated: Aug 21, 2026
Strategies for Tracking Anastasis, A Cell Survival Phenomenon that Reverses Apoptosis
Published on: February 16, 2015
Ethanol acts as a potent agent sensitizing colon cancer cells to the TRAIL-induced apoptosis
Alena Vaculová1, Jirina Hofmanová, Karel Soucek
1Laboratory of Cytokinetics, Institute of Biophysics, Academy of Sciences of the Czech Republic, Královopolská 135, 612 65 Brno, Czech Republic.
Abstract:
Identification of mechanisms of modulation of the TNF-related apoptosis-inducing ligand (TRAIL)-induced apoptosis is important for its potential use in anticancer therapy. Ethanol can induce cell death in vitro and in vivo by different signalling pathways. Its effect in combination with death ligands is unknown. We investigated how ethanol modulates the effects of TRAIL in colon cancer cells. After combined TRAIL and ethanol treatment, a potentiation of caspase-8, -9, -3 activation, a proapoptotic Bid protein cleavage, a decrease of mitochondrial membrane potential, a complete poly(ADP)ribose polymerase cleavage, and disappearance of antiapoptotic Mcl-1 protein were demonstrated. Ethanol acts as a potent agent sensitizing colon cancer cells to TRAIL-induced apoptosis.
Insights
Ethanol enhances tumor necrosis factor-related apoptosis-inducing ligand (TRAIL)-induced apoptosis in colon cancer cells. This study reveals ethanol as a sensitizing agent, potentiating key cell death pathways for potential anticancer therapy.
Area of Science:
- Oncology
- Cell Biology
- Pharmacology
Background:
- Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) is crucial for anticancer therapy.
- Ethanol induces cell death via various signaling pathways.
- The combined effect of ethanol and TRAIL on cancer cells is not well understood.
Purpose of the Study:
- To investigate how ethanol modulates TRAIL-induced apoptosis in colon cancer cells.
- To identify the underlying molecular mechanisms of this modulation.
- To assess the potential of ethanol as an adjuvant in TRAIL-based cancer treatments.
Main Methods:
- Colon cancer cells were treated with combined TRAIL and ethanol.
- Apoptosis-related proteins (caspases, Bid, PARP, Mcl-1) were analyzed.
- Mitochondrial membrane potential was assessed.
Main Results:
- Combined treatment significantly potentiated caspase-8, -9, and -3 activation.
- Ethanol induced proapoptotic Bid protein cleavage and decreased mitochondrial membrane potential.
- Complete poly(ADP)ribose polymerase cleavage and disappearance of antiapoptotic Mcl-1 protein were observed.
Conclusions:
- Ethanol acts as a potent sensitizing agent for TRAIL-induced apoptosis in colon cancer cells.
- The findings suggest a novel therapeutic strategy combining ethanol with TRAIL for colon cancer treatment.
- Further research is warranted to explore the clinical applicability of this combination therapy.
