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Updated: Mar 9, 2026

Preparation of Neutrally-charged, pH-responsive Polymeric Nanoparticles for Cytosolic siRNA Delivery
Published on: May 2, 2019
Nanoengineered strategies for siRNA delivery: from target assessment to cancer therapeutic efficacy
Dinesh Kumar Mishra1, Neelam Balekar2, Pradyumna Kumar Mishra3
1IPS Academy, College of Pharmacy, A. B. Road, Indore, MP, 452 012, India. dineshdops@gmail.com.
Abstract:
The promise of RNA interference (RNAi) technology in cancer therapeutics aims to deliver small interfering RNA (siRNA) for silencing of gene expression in cell type-specific pathway. However, the challenge for the delivery of stable siRNA is hindered by an immune-hostile tumor microenvironment and physiological barriers of the circulatory system. Therefore, the development and validation of safe, stable, and efficient nanoengineered delivery systems are highly essential for effective delivery of siRNA into cancer cells. This review focuses on gene-silencing mechanisms, challenges to siRNA delivery, design and delivery of nanocarrier systems, ongoing clinical trials, and translational prospects for siRNA-mediated cancer therapeutics.
Insights
RNA interference (RNAi) therapy shows promise for cancer treatment by delivering small interfering RNA (siRNA) to silence genes. Developing effective nanoengineered delivery systems is crucial to overcome delivery challenges in the tumor microenvironment.
Area of Science:
- Biotechnology
- Molecular Biology
- Cancer Therapeutics
Background:
- RNA interference (RNAi) offers potential for targeted gene silencing in cancer therapy.
- Delivery of small interfering RNA (siRNA) is limited by the tumor microenvironment and physiological barriers.
Purpose of the Study:
- To review gene-silencing mechanisms and challenges in siRNA delivery for cancer therapeutics.
- To explore nanocarrier systems for effective siRNA delivery into cancer cells.
Main Methods:
- Literature review of gene-silencing mechanisms.
- Analysis of challenges in siRNA delivery.
- Examination of nanocarrier design and delivery strategies.
- Overview of clinical trials and translational prospects.
Main Results:
- Nanoengineered delivery systems are essential for overcoming siRNA delivery barriers.
- Various nanocarrier systems are being developed and validated for siRNA delivery.
- Ongoing clinical trials are evaluating the efficacy of siRNA-mediated cancer therapeutics.
Conclusions:
- Effective nanoengineered delivery systems are critical for realizing the potential of siRNA cancer therapeutics.
- Further research and clinical validation are needed to translate siRNA technology into effective cancer treatments.
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