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Biological barriers to therapy with antisense and siRNA oligonucleotides
1UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, USA. arjay@med.unc.edu
Molecular Pharmaceutics
|April 29, 2009
Summary
Understanding biological barriers is key to maximizing the therapeutic potential of antisense and small interfering RNA (siRNA) oligonucleotides. This review explores delivery challenges and aids in designing better oligonucleotide delivery systems.
Area of Science:
- Biochemistry
- Molecular Biology
- Drug Delivery
Background:
- Antisense and siRNA oligonucleotides offer significant therapeutic promise.
- Realizing their full potential is hindered by biological barriers.
- Effective cellular delivery remains a challenge for oligonucleotide therapeutics.
Purpose of the Study:
- To review key biological barriers affecting oligonucleotide biodistribution.
- To examine challenges for both free and nanocarrier-associated oligonucleotides.
- To inform the design of improved oligonucleotide delivery systems.
Main Methods:
- Literature review of biological barriers impacting oligonucleotide delivery.
- Analysis of factors influencing molecular and nanocarrier-based oligonucleotide biodistribution.
- Synthesis of information on biological processes underlying delivery challenges.
Main Results:
- Identified critical biological barriers to oligonucleotide therapeutic utility.
- Discussed biodistribution challenges for oligonucleotides in free and nanocarrier forms.
- Highlighted the importance of understanding cellular barriers for effective delivery.
Conclusions:
- Overcoming biological barriers is essential for advancing oligonucleotide therapeutics.
- Knowledge of these barriers aids in the rational design of delivery vehicles.
- Improved delivery systems will enhance the clinical application of antisense and siRNA oligonucleotides.
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