B. Meng et al., A SULFIDE-LINKED OLIGONUCLEOTIDE ANALOG WITH SELECTIVE HYBRIDIZATION PROPERTIES, Angewandte Chemie, International Edition in English, 32(5), 1993, pp. 729-731
RNA and DNA sequences can be distinguished efficiently with a modified
oligonucleotide incorporating nonhydrolyzable sulfide linkages. A dod
ecamer containing three thio-ether-linked riboT-T dimers 1 is easily p
repared by standard solid-phase methods and binds cooperatively to com
plementary RNA but not to DNA. Oligonucleotides of this type should be
of use in antisense technology.