In vitro optimization of 2'-OMe-4'-thioribonucleoside-modified anti-microRNA oligonucleotides and its targeting delivery to mouse liver using a liposomal nanoparticle.

ABSTRACT: MicroRNAs (miRNAs) are small noncoding RNAs that regulate gene expression post-transcriptionally. Previous studies, which characterized miRNA function, revealed their involvement in fundamental biological processes. Importantly, miRNA expression is deregulated in many human diseases. Specific inhibition of miRNAs using chemically modified anti-miRNA oligonucleotides (AMOs) can be a potential therapeutic strategy for diseases in which a specific miRNA is overexpressed. 2'-O-Methyl (2'-OMe)-4'-thioRNA is a hybrid type of chemically modified oligonucleotide, exhibiting high binding affinity to complementary RNAs and high resistance to nuclease degradation. Here, we evaluate 2'-OMe-4'-thioribonucleosides for chemical modification on AMOs. Optimization of the modification pattern using a variet

SUBMITTER: Takahashi M 

PROVIDER: S-EPMC3905841 | biostudies-literature | 2013 Dec

REPOSITORIES: biostudies-literature