Related Experiment Video
Updated: Aug 3, 2026
Preclinical Assessment of the Bioactivity of the Anticancer Coumarin OT48 by Spheroids, Colony Formation Assays, and Zebrafish Xenografts
Published on: June 26, 2018
TRAIL and docosahexaenoic acid cooperate to induce HT-29 colon cancer cell death
Alena Vaculová1, Jirina Hofmanová, Ladislav Andera
1Laboratory of Cytokinetics, Institute of Biophysics, Academy of Sciences of the Czech Republic, Královopolská 135, 612 65 Brno, Czech Republic.
Abstract:
The resistance of some cancer cells to TRAIL-induced apoptosis is a major obstacle in successful clinical application of this cytokine. Combination treatment with agents capable of sensitising the cells to TRAIL effects is beneficial for new cancer treatment strategies. Docosahexaenoic acid (DHA) is under intense investigation for its ability to affect cancer cell growth and apoptosis. We demonstrated a modulation of TRAIL-induced apoptosis of HT-29 human colon cancer cells by DHA on the molecular (pro-caspase-3, -8, Bid, PARP cleavage) and cellular (cell viability and adhesion) level. To conclude, TRAIL and DHA were shown to cooperate in the induction of colon cancer cell apoptosis.
Insights
Combining docosahexaenoic acid (DHA) with TRAIL enhances cancer cell death. This combination therapy shows promise for overcoming resistance to TRAIL-induced apoptosis in colon cancer treatment.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Cancer cell resistance to Tumor Necrosis Factor-Related Apoptosis-Inducing Ligand (TRAIL)-induced apoptosis hinders its clinical use.
- Combination therapies are crucial for overcoming treatment resistance and improving cancer outcomes.
- Docosahexaenoic acid (DHA) is recognized for its potential anti-cancer properties, including effects on cell growth and apoptosis.
Purpose of the Study:
- To investigate the synergistic effect of DHA and TRAIL on HT-29 human colon cancer cells.
- To elucidate the molecular mechanisms underlying DHA's modulation of TRAIL-induced apoptosis.
- To assess the impact of DHA and TRAIL combination on cellular functions like viability and adhesion.
Main Methods:
- Treatment of HT-29 colon cancer cells with DHA and TRAIL, individually and in combination.
- Molecular analysis of apoptosis-related proteins, including pro-caspase-3, pro-caspase-8, Bid, and PARP cleavage.
- Assessment of cellular outcomes such as cell viability and cell adhesion.
Main Results:
- DHA significantly modulated TRAIL-induced apoptosis in HT-29 cells at both molecular and cellular levels.
- Specific molecular changes observed included alterations in pro-caspase-3, -8, Bid, and PARP cleavage.
- Cellular analysis revealed impacts on cell viability and adhesion, indicating enhanced anti-cancer effects.
Conclusions:
- TRAIL and DHA cooperate to induce apoptosis in colon cancer cells.
- The combination of TRAIL and DHA presents a potential therapeutic strategy for overcoming TRAIL resistance in colon cancer.
- Further research into this combination therapy could lead to novel cancer treatment approaches.
