"Combination-oriented molecular-targeting prevention" of cancer: a model involving the combination of TRAIL and a DR5
Tatsushi Yoshida1, Mano Horinaka, Toshiyuki Sakai
1Department of Molecular-Targeting Cancer Prevention, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan.
Abstract:
Malignant tumors carry a high risk of death, and the prevention of malignant tumors is a crucial issue in preventive medicine. To this end, many chemopreventive agents have been tested, but the effects of single agents have been found to be insufficient to justify clinical trials. We have therefore hypothesized that combinations of different chemopreventive agents may synergistically enhance the preventive effect of chemopreventive agents used singly. To provide the treating physician with some guideline by which to choose the most effective agents to be combined, we propose a strategy which we have termed the "combination-oriented molecular-targeting prevention" of cancer. As the molecular target of our model, we focused on tumor necrosis factor-related apoptosis-inducing ligand (TRAIL), which specifically causes apoptosis in malignant tumor cells. Many of these agents were found to up-regulate the expression of death receptor 5, a TRAIL receptor. They were also found to synergistically induce apoptosis in malignant tumor cells when combined with TRAIL. Here, we strongly advocate that the strategy of "combination-oriented molecular-targeting prevention" of cancer will be a practical approach for chemoprevention against human malignant tumors.
Insights
Combining chemopreventive agents targeting tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) offers a promising strategy for cancer prevention. This approach enhances apoptosis in malignant cells, potentially improving outcomes in cancer chemoprevention.
Area of Science:
- Oncology
- Preventive Medicine
- Molecular Biology
Background:
- Malignant tumors pose a significant mortality risk, making cancer prevention a critical area of research.
- Single chemopreventive agents have shown limited efficacy, necessitating the exploration of combination therapies.
- Developing guidelines for selecting effective agent combinations is essential for clinical application.
Purpose of the Study:
- To propose a "combination-oriented molecular-targeting prevention" strategy for cancer.
- To identify molecular targets and agents that can be effectively combined for enhanced chemoprevention.
- To validate the synergistic effect of combined agents in inducing cancer cell apoptosis.
Main Methods:
- Focused on tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) as a molecular target.
- Investigated chemopreventive agents that up-regulate death receptor 5 (DR5) expression.
- Evaluated the synergistic induction of apoptosis in malignant tumor cells when agents were combined with TRAIL.
Main Results:
- Identified several chemopreventive agents that enhance the expression of TRAIL receptor, death receptor 5.
- Demonstrated that combinations of these agents synergistically induce apoptosis in malignant tumor cells.
- Showcased the potential of targeting TRAIL pathways for enhanced cancer prevention.
Conclusions:
- "Combination-oriented molecular-targeting prevention" is a practical strategy for cancer chemoprevention.
- Targeting TRAIL and its receptors offers a viable approach for synergistic cancer cell death induction.
- This strategy provides a framework for developing more effective cancer prevention therapies.
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