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Strategies for enhancing viral-based gene therapy using ionizing radiation
S J Chmura1, S J Advani, D W Kufe
1Department of Radiation and Cellular Oncology, University of Chicago and the Pritzker School of Medicine, Illinois, USA.
Abstract:
Many gene-therapy strategies under investigation aim to increase the efficacy of current cancer-treatment regimens. Promising results have been obtained in the laboratory and early clinical trials using viral-based motifs specifically designed to enhance the efficacy of ionizing radiation or chemotherapy. These strategies fall into two general categories: replication-incompetent viral shuttle vectors for the delivery of specific genes encoding a chemo/radiation modulator and attenuated replication-competent viruses with proposed replicative advantages in tumor cells. In this review, we discuss the rational, molecular mechanisms, and clinical application of these strategies with particular focus on recent research applying these viral-based strategies to improve the therapeutic index of ionizing radiation.
Insights
Gene therapy using viruses enhances cancer treatments like radiation and chemotherapy. Researchers are exploring viral vectors and modified viruses to improve cancer patient outcomes.
Area of Science:
- Oncology
- Gene Therapy
- Radiation Oncology
Background:
- Current cancer treatments like chemotherapy and ionizing radiation have limitations.
- Gene therapy offers potential to improve cancer treatment efficacy.
- Viral vectors are being investigated for targeted cancer therapy.
Purpose of the Study:
- To review gene-therapy strategies enhancing cancer treatments.
- To focus on viral-based approaches for improving radiation therapy efficacy.
- To discuss the rationale, mechanisms, and clinical applications of these strategies.
Main Methods:
- Review of existing literature on gene therapy and viral vectors in cancer treatment.
- Analysis of two main categories of viral strategies: replication-incompetent vectors and attenuated replication-competent viruses.
- Focus on molecular mechanisms and clinical applications, particularly concerning ionizing radiation.
Main Results:
- Viral-based gene therapy strategies show promise in laboratory and early clinical settings.
- Replication-incompetent vectors deliver genes for chemo/radiation modulators.
- Attenuated replication-competent viruses exploit tumor cell replicative advantages.
Conclusions:
- Gene therapy, particularly using viral vectors, is a promising strategy to augment current cancer regimens.
- These viral strategies aim to enhance the therapeutic index of ionizing radiation.
- Further research and clinical trials are necessary to fully realize the potential of viral gene therapy in oncology.