Antisense oligonucleotide (ASO) technology is a programmable RNA-targeting approach that uses short synthetic oligonucleotides to bind complementary RNA sequences and modulate gene expression. Depending on the ASO design, chemistry, and target site, ASOs can trigger RNA degradation, block RNA function, or redirect pre-mRNA splicing.
ASOs are especially useful because they can target both cytoplasmic and nuclear RNA, including mRNA, pre-mRNA splice sites, regulatory RNA elements, and selected noncoding RNAs. This makes ASOs a flexible platform for functional genomics, target validation, pathway analysis, and therapeutic oligonucleotide development.
ASO Technology Mechanisms & Benefits
ASO mechanism overview. Antisense oligonucleotides support targeted RNA degradation, steric blocking, splice modulation, and miRNA inhibition through sequence-specific targeting and chemical modification strategies.
ASO design flexibility: By selecting the appropriate chemistry and architecture, antisense oligonucleotides can be optimized for RNA degradation, steric blocking, splice modulation, or regulatory RNA targeting—enabling precise control of gene expression across a wide range of applications.
| Benefit |
How ASO Technology Helps |
Best-Fit Service |
| Programmable Specificity |
ASOs are designed by sequence, allowing direct targeting of selected RNA regions. |
Gapmer ASO, Steric-Blocking ASO, Splice-Switching ASO |
| Multiple Mechanisms |
The same oligonucleotide platform can support degradation, functional blocking, or splice modulation by changing design and chemistry. |
Mechanism-specific ASO synthesis |
| Nuclear RNA Access |
ASOs can target pre-mRNA and nuclear RNA regions, including splice junctions and regulatory elements. |
Splice-Switching ASO and steric-blocking designs |
| Chemical Optimization |
Backbone, sugar, base, linkage, terminal, and conjugation modifications can improve stability, affinity, potency, and delivery. |
Modified ASO synthesis and add-on services |
| Research to Development Scale |
Projects can move from discovery and screening quantities to larger qualified ASO batches depending on sequence, chemistry, QC, and documentation requirements. |
Custom ASO synthesis up to 100 g/batch |
Custom optimization available: ASO performance can be tuned through sequence selection, gapmer architecture, wing chemistry, PS linkage strategy, splice-site targeting, purification grade, delivery conjugation, and custom QC requirements.