Nanoparticles for siRNA-Based Gene Silencing in Tumor Therapy
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Updated: Mar 8, 2026

Preparation of Neutrally-charged, pH-responsive Polymeric Nanoparticles for Cytosolic siRNA Delivery
Published on: May 2, 2019
Abstract:
Gene silencing through RNA interference (RNAi) has emerged as a potential strategy in manipulating cancer causing genes by complementary base-pairing mechanism. Small interfering RNA (siRNA) is an important RNAi tool that has found significant application in cancer therapy. However due to lack of stability, poor cellular uptake and high probability of loss-of-function due to degradation, siRNA therapeutic strategies seek safe and efficient delivery vehicles for in vivo applications. The current review discusses various nanoparticle systems currently used for siRNA delivery for cancer therapy, with emphasis on liposome based gene delivery systems. The discussion also includes various methods availed to improve nanoparticle based-siRNA delivery with target specificity and superior efficiency. Further this review describes challenges and perspectives on the development of safe and efficient nanoparticle based-siRNA-delivery systems for cancer therapy.
Insights
Small interfering RNA (siRNA) offers cancer gene silencing but requires effective delivery. Nanoparticles, especially liposomes, are explored as safe vehicles for enhanced siRNA therapy in vivo.
Area of Science:
- Biotechnology
- Molecular Biology
- Nanomedicine
Background:
- Gene silencing via RNA interference (RNAi) is a promising strategy for targeting cancer-causing genes.
- Small interfering RNA (siRNA) is a key RNAi tool with therapeutic potential in oncology.
- Current siRNA therapies face challenges like instability, poor cellular uptake, and degradation, necessitating efficient delivery systems.
Purpose of the Study:
- To review nanoparticle systems for siRNA delivery in cancer therapy.
- To highlight liposome-based gene delivery systems.
- To discuss methods for improving nanoparticle-mediated siRNA delivery for enhanced specificity and efficiency.
Main Methods:
- Review of current literature on nanoparticle-based siRNA delivery systems.
- Focus on liposome-based formulations.
- Analysis of strategies to enhance target specificity and efficiency.
Main Results:
- Various nanoparticle systems are utilized for siRNA delivery in cancer therapy.
- Liposome-based systems are emphasized for their potential.
- Methods exist to improve targeting and efficiency of nanoparticle-siRNA delivery.
Conclusions:
- Nanoparticles, particularly liposomes, are crucial for overcoming siRNA delivery challenges in cancer therapy.
- Strategies to enhance specificity and efficiency are vital for successful in vivo applications.
- Further development is needed for safe and effective nanoparticle-based siRNA delivery systems.
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