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Updated: Aug 6, 2026

Cell Squeezing as a Robust, Microfluidic Intracellular Delivery Platform
Published on: November 7, 2013
Innovations in oligonucleotide drug delivery
Melanie A Lysik1, Susanna Wu-Pong
1Midwestern University, College of Pharmacy-Glendale, Department of Pharmaceutical Sciences, 19555 N 59th Avenue, Glendale, Arizona 18308, USA. mlysik@Arizona.midwester.edu
Abstract:
Oligonucleotides (ONs) are a new class of therapeutic compounds under investigation for the treatment of a variety of disease states, such as cancer and HIV, and for FDA approval of an anti-CMV retinitis antisense molecule (Vitravene trade mark, Isis Pharmaceuticals). However, these molecules are limited not only by poor cellular uptake, but also by a general lack of understanding regarding the mechanism(s) of ON cellular uptake. As a result, various delivery vehicles have been developed that circumvent the proposed mechanism of uptake, endocytosis, while improving target specific delivery and/or drug stability. This review describes various traditional and novel delivery mechanisms that have been employed to improve ON cellular delivery, cost effectiveness, and therapeutic efficacy.
Insights
Oligonucleotides show therapeutic promise but face delivery challenges. This review explores innovative delivery methods to enhance oligonucleotide uptake, efficacy, and cost-effectiveness for treating diseases like cancer and HIV.
Area of Science:
- Biotechnology
- Drug Delivery
- Molecular Therapeutics
Background:
- Oligonucleotides (ONs) are emerging therapeutic agents for diseases including cancer and HIV.
- Poor cellular uptake and unclear uptake mechanisms limit ON efficacy.
- Existing delivery methods often bypass endocytosis to improve targeting and stability.
Purpose of the Study:
- To review traditional and novel delivery mechanisms for oligonucleotides.
- To highlight strategies for enhancing cellular delivery and therapeutic efficacy.
- To discuss improvements in cost-effectiveness for oligonucleotide-based therapies.
Main Methods:
- Review of scientific literature on oligonucleotide delivery systems.
- Analysis of various traditional and novel delivery approaches.
- Examination of methods to overcome cellular barriers to ON uptake.
Main Results:
- Delivery vehicles can significantly improve cellular uptake of oligonucleotides.
- Targeted delivery systems enhance specificity and drug stability.
- Novel strategies offer potential for improved therapeutic outcomes and cost-efficiency.
Conclusions:
- Effective delivery is crucial for realizing the therapeutic potential of oligonucleotides.
- Advancements in delivery mechanisms are key to overcoming current limitations.
- Optimized delivery strategies will broaden the application of ONs in medicine.
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