Rnai Activity of Sirnas Modified with 2'-Aminoalkyl-Substituted Fluorinated Nucleobases

Author: Haas Jens   Mueller-Kuller Thea   Klein Stefan   Engels Joachim  

Publisher: Taylor & Francis Ltd

ISSN: 1525-7770

Source: Nucleosides, Nucleotides & Nucleic Acids, Vol.26, Iss.6-7, 2007-06, pp. : 865-868

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Abstract

We recently reported that a 1'-deoxy-1'-(4,6-difluoro-1H-benzimidazol-1-yl)-2'-(β-aminoethyl)-β-d-ribofuranose nucleoside appears to be a universal nucleoside which does not differentiate between the four natural nucleosides A, C, G, and U in duplexes. Moreover, ribozymes modified with this nucleoside analog showed a better or at least equal catalytic activity relative to Watson-Crick mismatches.[1] Due to these data, we investigated the ability of this compound to tolerate Watson-Crick mismatches in order to avoid HIV escape mutations in RNA interference. The influence of this nucleoside analog on siRNA efficiency was analyzed with a proven siRNA targeting GFP.

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