Activity of siRNAs with 2-thio-2'-O-methyluridine modification in mammalian cells.

Nucleosides Nucleotides Nucleic Acids

Department of Medicinal Chemistry, Isis Pharmaceuticals Inc., Carlsbad, California 92008, USA.

Published: October 2009

In a search to identify chemical modifications to improve the properties of siRNA, we have investigated the effect of the 2 '-O-methyl-2-thiouridine modification on the biological activity of siRNA. Our results indicate that judicious placement of 2 '-O-methyl-2-thiouridine residues could lead to modified siRNA with activity in mammalian cells.

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http://dx.doi.org/10.1080/15257770903316145DOI Listing

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