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- Title
Silencing activity of 2′-O-methyl modified anti-MDR1 siRNAs with mismatches in the central part of the duplexes
- Authors
Petrova, Natalya S.; Meschaninova, Mariya I.; Venyaminova, Alya G.; Zenkova, Marina A.; Vlassov, Valentin V.; Chernolovskaya, Elena L.
- Abstract
Abstract: The thermodynamic properties of siRNA duplexes are important for their silencing activity. siRNAs with high thermodynamic stability of both the central part of the duplex and in the whole, usually display low silencing activity. Destabilization of the central part of the siRNA duplex could increase its silencing activity. However, mismatches located in the central part of the duplex could substantially decrease the amount of RNAi efficacy, hindering active RISC formation and function. In this study, we examined the impact of duplex destabilization by nucleotide substitutions in the central part (7–10nt counting from the 5′-end of the antisense strand) of the nuclease-resistant siRNA on its silencing activity.
- Subjects
SMALL interfering RNA; THERMODYNAMICS; NUCLEIC acids; GENE silencing; NUCLEOTIDE sequence; MOLECULAR dynamics
- Publication
FEBS Letters, 2011, Vol 585, Issue 14, p2352
- ISSN
0014-5793
- Publication type
Article
- DOI
10.1016/j.febslet.2011.06.003