Locked nucleic acid (LNA) mediated improvements in siRNA stability and functionality

作者: J. Elm n

DOI: 10.1093/NAR/GKI193

关键词: Functional genomicsCell biologyMolecular biologyRNA interferenceOligonucleotideLocked nucleic acidSmall interfering RNARNA StabilityRNABiologyGene silencing

摘要: Therapeutic application of the recently discovered small interfering RNA (siRNA) gene silencing phenomenon will be dependent on improvements in molecule bio-stability, specificity and delivery. To address these issues, we have systematically modified siRNA with synthetic RNA-like high affinity nucleotide analogue, Locked Nucleic Acid (LNA). Here, show that incorporation LNA substantially enhances serum half-life siRNA's, which is a key requirement for therapeutic use. Moreover, provide evidence compatible intracellular machinery can used to reduce undesired, sequence-related off-target effects. LNA-modified siRNAs targeting emerging disease SARS, improved efficiency over unmodified certain motifs. The results from this study emphasize LNA's promise converting functional genomics technology platform.

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