SNPs analysis by use of oligonucleotides containing 2′-O-methyl-2-thiouridines

In this study, we report an improved method for the synthesis of oligonucleotides containing 2-thiouridine (s2U) derivatives. The hybridization affinity and base pair recognition ability of oligonucleotides having 2-thiouracil moieties with both the complementary RNAs and DNAs were also studied in detail. These results indicate that oligonucleotides containing s2U derivatives could be used as powerful tools for chip-based SNPs detection.