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Non-invasive genetic imaging for molecular and cell therapies of cancer
1Dpto Biotecnología, Facultad de Ciencias Biosanitarias, Universidad Francisco de Vitoria, Pozuelo de Alarcón, Madrid, Spain.
Abstract:
Gene therapy is a very attractive strategy in experimental cancer therapy. Ideally, the approach aims to deliver therapeutic genes selectively to cancer cells. However, progress in the improvement of gene therapy formulations has been hampered by difficulties in measuring transgene delivery and in quantifying transgene expression in vivo. In clinical trials, endpoints rely almost exclusively on the analysis of biopsies, which provide limited information. Non-invasive monitoring of gene delivery and expression is a very attractive approach as it can be repeated over time in the same patient to provide spatiotemporal information on gene expression on a whole body scale. Thus, imaging methods can uniquely provide researchers and clinicians the ability to directly and serially assess morphological, functional and metabolic changes consequent to molecular and cellular based therapies. This review highlights the various methods currently being developed in preclinical models.
Insights
Non-invasive imaging methods enable precise monitoring of gene therapy delivery and expression in cancer research. This approach overcomes limitations of traditional biopsy analysis, offering whole-body, spatiotemporal insights for improved treatment assessment.
Area of Science:
- Oncology
- Molecular Biology
- Biomedical Imaging
Background:
- Gene therapy offers a promising strategy for experimental cancer treatment, aiming for selective delivery of therapeutic genes to malignant cells.
- Current limitations in assessing gene therapy efficacy stem from difficulties in measuring transgene delivery and expression in vivo, with clinical trials relying heavily on invasive biopsy analysis.
Purpose of the Study:
- To review and highlight emerging non-invasive imaging methods for monitoring gene delivery and expression in preclinical cancer gene therapy models.
- To address the need for spatiotemporal, whole-body assessment of gene expression, overcoming the limitations of traditional biopsy-based evaluations.
Main Methods:
- Review of various non-invasive imaging techniques applicable to preclinical cancer gene therapy research.
- Discussion of how imaging can provide serial, direct assessment of morphological, functional, and metabolic changes post-therapy.
Main Results:
- Non-invasive imaging allows for repeated, whole-body monitoring of transgene delivery and expression over time.
- Imaging provides spatiotemporal data crucial for understanding the efficacy and impact of gene therapy interventions.
Conclusions:
- Non-invasive imaging is essential for advancing cancer gene therapy by enabling direct, serial assessment of treatment effects.
- Development of these imaging methods in preclinical models is key to improving the clinical translation of gene therapy strategies.
