Oligonucleotides with LNA and targeting of biologically important RNAs

Activity of RNA-targeting antisense oligonucleotides increases when introducing LNA monomers, implying that an 18 nucleotides long LNA/2OMe mixmer splice-switching oligonucleotide can be shortened to 12mer and have similar activity and specificity as an 18mer 2OMe oligonucleoyide. Positioning of LNA monomers has to be carefully considered when utilizing the potent LNA monomers in RNA-targeting antisense oligonucleotides.