TRAIL-receptor antibodies as a potential cancer treatment
Donald J Buchsbaum1, Andres Forero-Torres, Albert F LoBuglio
1Department of Radiation Oncology, Division of Radiation Biology, 1530 3rd Avenue South, WT1 674, Birmingham, AL 35294-6832, USA. djb@uab.edu
Abstract:
Increasing attention has been focused on the use of agonistic monoclonal antibodies against TNF-related apoptosis-inducing ligand (TRAIL) death receptors DR4 or DR5 as a potential cancer treatment. These antibodies have strong apoptosis-inducing activity against cancer cells and potent antitumor activity against tumor xenografts in preclinical models that are enhanced by combination chemotherapy treatment. There are several agonistic humanized or human monoclonal antibodies against DR4 and DR5 that have been tested in Phase I and II trials in patients with advanced cancer. These trials have demonstrated these antibodies to be well tolerated, and to produce prolonged stable disease, which is the best antitumor effect in patients with advanced cancer. Clinical studies in which TRAIL-receptor antibodies are being investigated in combination treatment regimens in patients with advanced cancer are ongoing. It is anticipated that the results from a broad spectrum of cancer therapy clinical trials will identify the activity and toxicity profiles of TRAIL death-receptor antibodies as a single agent, or in combination with chemotherapy agents or radiation therapy.
Insights
Agonistic monoclonal antibodies targeting TNF-related apoptosis-inducing ligand (TRAIL) death receptors show promise for cancer therapy. Clinical trials indicate these TRAIL-receptor antibodies are well-tolerated and effective in stabilizing advanced cancers.
Area of Science:
- Oncology
- Immunology
- Pharmacology
Background:
- Agonistic monoclonal antibodies targeting TNF-related apoptosis-inducing ligand (TRAIL) death receptors DR4/DR5 are emerging as a cancer treatment strategy.
- These antibodies demonstrate significant apoptosis-inducing and antitumor activities in preclinical models, particularly when combined with chemotherapy.
Purpose of the Study:
- To evaluate the safety, tolerability, and efficacy of agonistic monoclonal antibodies against TRAIL death receptors in patients with advanced cancer.
- To explore the potential of these antibodies as a single agent or in combination therapies for cancer treatment.
Main Methods:
- Phase I and II clinical trials involving humanized or human monoclonal antibodies against DR4 and DR5.
- Assessment of patient response, including stable disease, and evaluation of toxicity profiles.
Main Results:
- Clinical trials demonstrated that TRAIL-receptor antibodies are well tolerated in patients with advanced cancer.
- These antibodies achieved prolonged stable disease, representing a significant antitumor effect in this patient population.
Conclusions:
- Agonistic TRAIL-receptor antibodies show a favorable safety profile and clinical activity in advanced cancer patients.
- Ongoing clinical trials are investigating combination regimens to further define the therapeutic potential of these antibodies in various cancer settings.
Related Concept Videos
Targeted Cancer Therapies
There are several types of targeted therapies against specific...
Tumor Immunotherapy
Transducer Mechanism: Enzyme-Linked Receptors
Major types that are helpful drug targets include:
Cancer Vaccines
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...
Enzyme-linked Receptors
Neurotrophin (NT) receptors are a family of RTKs, including trkA, trkB, and trkC (tropomyosin-related kinase) receptors. TrkA is specific for nerve growth factor (NGF), neurotrophin-6, and neurotrophin-7. TrkB binds...
Receptor Downregulation in MVBs
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR activation may...


