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Updated: Aug 16, 2025

Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids
Published on: September 21, 2017
Structural-Based Stability Enhancement of Antisense DNA Oligonucleotides
Jie Zeng1, Liang Fang2,3, Tingting Jiang4
1College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China.
Abstract:
Antisense DNA oligonucleotide (AS) technology is a promising approach to regulate gene expression and cellular processes. For example, ASs can be used to capture the overexpressed, oncogenic miRNAs in tumors to suppress tumor growth. Among many challenges faced by AS approach is the degradation of ASs by nucleases under physiological conditions. Elongating the AS lifespan can substantially enhance the functions of AS. The paper reports a simple strategy to increase the stability of ASs. The authors discover that the ASs degrade quickly if their ends are in unpaired, single-stranded form, but much slower if their ends are in paired duplex form. It is conceivable to integrate this strategy with other strategies (such as chemical modification of ASs backbones) to maximally increase the ASs stabilities.
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