2'-O-[2-(methylthio)ethyl]-modified oligonucleotide: an analogue of 2'-O-[2-(methoxy)-ethyl]-modified oligonucleotide with improved protein binding properties and high binding affinity to target RNA.

A novel 2'-modification, 2'-O-[2-(methylthio)ethyl] or 2'-O-MTE, has been incorporated into oligonucleotides and evaluated for properties relevant to antisense activity. The results were compared with the previously characterized 2'-O-[2-(methoxy)ethyl] 2'-O-MOE modification. As expected, the 2'-O-MTE modified oligonucleotides exhibited improved binding to… (More)