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Armed therapeutic viruses: strategies and challenges to arming oncolytic viruses with therapeutic genes
Terry W Hermiston1, Irene Kuhn
1Berlex Biosciences, Richmond, California 94804-0099, USA. terry_hermiston@berlex.com
Abstract:
Oncolytic viruses are attractive therapeutics for cancer because they selectively amplify, through replication and spread, the input dose of virus in the target tumor. To date, clinical trials have demonstrated marked safety but have not realized their theoretical efficacy potential. In this review, we consider the potential of armed therapeutic viruses, whose lytic potential is enhanced by genetically engineered therapeutic transgene expression from the virus, as potential vehicles to increase the potency of these agents. Several classes of therapeutic genes are outlined, and potential synergies and hurdles to their delivery from replicating viruses are discussed.
Insights
Armed oncolytic viruses, engineered to express therapeutic genes, show promise for enhancing cancer treatment potency. This review explores their potential, synergies, and delivery challenges for improved cancer therapy.
Area of Science:
- Oncology
- Virology
- Biotechnology
Background:
- Oncolytic viruses are promising cancer therapeutics due to their tumor-selective replication.
- Clinical trials show oncolytic virus therapy is safe but lacks optimal efficacy.
- Enhancing viral lytic potential is key to improving therapeutic outcomes.
Purpose of the Study:
- To review the potential of armed oncolytic viruses for cancer therapy.
- To discuss genetically engineered therapeutic transgene expression from viruses.
- To explore strategies for increasing the potency of oncolytic viral agents.
Main Methods:
- Literature review of armed oncolytic virus strategies.
- Analysis of therapeutic transgene expression from engineered viruses.
- Discussion of delivery synergies and hurdles for replicating viral vectors.
Main Results:
- Armed oncolytic viruses can enhance therapeutic transgene expression within tumors.
- Specific classes of therapeutic genes are identified for viral engineering.
- Potential benefits and challenges of armed oncolytic virus delivery are outlined.
Conclusions:
- Armed oncolytic viruses represent a strategy to improve cancer treatment efficacy.
- Further research is needed to overcome delivery hurdles and optimize transgene expression.
- Engineered oncolytic viruses hold significant potential for future cancer therapeutics.
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