Cancer gene therapy: 'delivery, delivery, delivery'
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Updated: Jun 13, 2026
Therapeutic Gene Delivery and Transfection in Human Pancreatic Cancer Cells using Epidermal Growth Factor Receptor-targeted Gelatin Nanoparticles
Published on: January 4, 2012
Olga Greco1, Simon D Scott, Brian Marples
1Dept. of Physics, University of Naples Federico II, Naples 80126, Italy. Olga.Greco@na.infn.it
Abstract:
Gene therapy for cancer treatment represents a promising approach that has shown selectivity and efficacy in experimental systems as well as clinical trials. Some major problems remain to be solved before this strategy becomes routinely adopted in the clinic, one of the main challenges being the improvement of gene delivery. Namely, the development of DNA vectors characterized by maximum efficiency and minimal toxicity will define the success of gene therapy and its chances of being accepted by public and clinicians. A number of issues need to be considered. The "magic" vector should be targeted, protected from degradation and immune attack, and safe for the recipient and the environment. Moreover, it should express the therapeutic gene for as long as required, in an appropriately regulated fashion. Vehicles such as retroviruses, adenoviruses and liposomes have been adopted in clinical studies, with varying results. New therapeutic modalities are also being explored in order to overcome the limitation of poor gene transfer and patient toxicity, including bacteria, adeno-associated and herpes simplex viruses, lentiviruses, cationic polymer-DNA complexes and electroporation. Some of the delivery systems tested in preclinical and clinical models are reviewed in this article, with particular attention to the targeting of the tumor environment.
Insights
Gene therapy offers a promising cancer treatment, but improving DNA vector delivery is crucial for clinical success. Enhanced vectors must be efficient, non-toxic, targeted, and safe for widespread adoption.
Area of Science:
- Oncology
- Molecular Biology
- Biotechnology
Background:
- Gene therapy is a promising cancer treatment modality with demonstrated efficacy in preclinical and clinical settings.
- Significant challenges persist, primarily concerning the efficiency and safety of gene delivery systems.
- Overcoming these hurdles is essential for the routine clinical application of gene therapy.
Purpose of the Study:
- To review current gene delivery systems for cancer gene therapy.
- To highlight key challenges and considerations for developing effective DNA vectors.
- To emphasize the importance of targeting the tumor microenvironment.
Main Methods:
- Review of existing literature on gene delivery vehicles used in cancer therapy.
- Analysis of various viral and non-viral delivery systems, including retroviruses, adenoviruses, liposomes, and newer modalities.
- Discussion of vector characteristics such as targeting, stability, immunogenicity, and safety.
Main Results:
- Several gene delivery vehicles (retroviruses, adenoviruses, liposomes) have been utilized in clinical trials with variable outcomes.
- Emerging delivery systems like adeno-associated viruses, lentiviruses, and polymer-DNA complexes show potential.
- Optimization of vector properties, including tumor-specific targeting, is critical for enhanced therapeutic outcomes.
Conclusions:
- The success of cancer gene therapy hinges on the development of highly efficient and minimally toxic DNA vectors.
- Future advancements require vectors that are targeted, protected from degradation, immunologically inert, and safe.
- Continued research into novel delivery systems and strategies, particularly those targeting the tumor environment, is vital for clinical translation.
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