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Updated: Aug 29, 2026

Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids
Published on: September 21, 2017
Antisense oligonucleotide-based therapeutics for cancer
Nicholas M Dean1, C Frank Bennett
1ISIS Pharmaceuticals, 2282 Faraday Ave, Carlsbad, CA 92008, USA.
Abstract:
There has been steady progress in antisense technology over the past 14 years. We now have a far better appreciation of the attributes and limitations of the technology. Antisense oligonucleotides have been used to selectively inhibit thousands of genes in mammalian cells, hundreds, if not thousands, of genes in rodents and other species and multiple genes in humans. There are over 20 antisense drugs currently in clinical trials, several of which are showing promising results. Like any other class of drugs in development, there will continue to be successes and failures in the clinic. Despite some disappointments with the technology, it appears to be a valid platform for both drug discovery and as an experimental tool for functionalizing genes. Advances in the medicinal chemistry and formulation of antisense oligonucleotides will further enhance their therapeutic and commercial potential.
Insights
Antisense technology has advanced significantly, enabling gene inhibition in various species. With over 20 drugs in clinical trials, this technology shows promise for drug discovery and gene functionalization.
Area of Science:
- Molecular Biology
- Pharmacology
- Genetics
Background:
- Antisense technology has undergone substantial development over the last 14 years.
- A deeper understanding of its capabilities and constraints has been achieved.
- Antisense oligonucleotides (ASOs) are established tools for gene inhibition.
Purpose of the Study:
- To review the progress and current status of antisense technology.
- To highlight its utility as a drug discovery platform and research tool.
- To discuss future potential based on medicinal chemistry and formulation advances.
Main Methods:
- Selective gene inhibition in mammalian cells, rodents, and humans using antisense oligonucleotides.
- Clinical trial progression of over 20 antisense drugs.
- Evaluation of therapeutic and commercial potential through medicinal chemistry and formulation.
Main Results:
- ASOs have successfully inhibited thousands of genes across multiple species.
- Numerous antisense drugs are in clinical trials, with some demonstrating positive outcomes.
- The technology is recognized as a valid platform for both drug discovery and gene functionalization.
Conclusions:
- Antisense technology is a validated approach for drug discovery and experimental gene functionalization.
- Continued advancements in medicinal chemistry and formulation are expected to boost its therapeutic and commercial viability.
- The field anticipates both successes and failures, characteristic of drug development.
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