A fluorescent ribonucleoside alphabet consisting of highly emissive purine ((th)A, (th)G) and pyrimidine (U-th, C-th) analogues, all derived from thieno[3,4-d]pyrimidine as the heterocyclic nucleus, is described. Structural and biophysical analyses demonstrated that the emissive analogues are faithful isomorphic nucleoside surrogates. Photophysical analysis established that the nucleosides offer highly desirable qualities, including visible emission, high quantum yield, and responsiveness to environmental perturbations, traits entirely lacking in their native counterparts.
Cellular activity of siRNA oligonucleotides containing synthetic isomorphic nucleoside surrogates
作者:Dongwon Shin、Peter Lönn、Steven F. Dowdy、Yitzhak Tor
DOI:10.1039/c4cc08809c
日期:——
Singly and multiply modified synthetic siRNA oligonucleotides, containing highly isomorphic surrogate nucleobases, show high interference activity in cell culture.