Strategies for in vivo siRNA delivery in cancer
Angela Sanguino1, Gabriel Lopez-Berestein, Anil K Sood
1Department of Experimental Therapeutics, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
Abstract:
A better understanding of the mechanisms involved in small interference RNA (siRNA) gene silencing opens new horizons for the development of the targeted therapy of malignant and benign diseases. As a research tool, siRNA has proven to be highly effective in silencing specific genes and modulating intracellular signaling pathways. However, systemic delivery of siRNA has been more problematic due to degradation and poor cellular uptake. In order to overcome these limitations, a variety of strategies are being developed including new delivery vehicles and chemical modifications. Here, we review potential approaches for the systemic delivery of siRNA for cancer treatment.
Insights
Small interference RNA (siRNA) offers targeted therapy potential but faces delivery challenges. This review explores strategies to improve systemic siRNA delivery for treating diseases like cancer.
Area of Science:
- Molecular Biology
- Gene Therapy
- Pharmacology
Background:
- Small interference RNA (siRNA) mediates gene silencing, a promising mechanism for targeted disease therapy.
- siRNA is effective in research for gene modulation but faces challenges in clinical applications.
- Systemic delivery of siRNA is hindered by degradation and poor cellular uptake, limiting its therapeutic use.
Purpose of the Study:
- To review current strategies for overcoming systemic delivery barriers of siRNA.
- To discuss advancements in delivery vehicles and chemical modifications for siRNA therapeutics.
- To highlight the potential of improved siRNA delivery for cancer treatment.
Main Methods:
- Literature review of recent advancements in siRNA delivery systems.
- Analysis of chemical modifications enhancing siRNA stability and cellular penetration.
- Evaluation of novel delivery vehicles designed for systemic administration.
Main Results:
- Various delivery vehicles, including nanoparticles and viral vectors, show promise for protecting siRNA.
- Chemical modifications can improve siRNA resistance to degradation and facilitate cellular uptake.
- These strategies collectively aim to enhance the efficacy of siRNA in therapeutic settings.
Conclusions:
- Overcoming systemic delivery obstacles is crucial for realizing siRNA's therapeutic potential.
- Continued research into delivery vehicles and chemical modifications is essential for advancing siRNA-based treatments.
- Improved siRNA delivery holds significant promise for the future of targeted cancer therapy and other diseases.
Related Concept Videos
02:30siRNA - Small Interfering RNAs
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the ATP-dependent...
02:15Experimental RNAi