10-23 DNAzyme modified with (2′R)- and (2′S)-2′-deoxy- 2′-C-methyluridine in the catalytic core

Abstract

The catalytic core of a 10-23 DNAzyme was modified using (2′R), (2′S)-2′-deoxy-2′-C-methyluridine and LNA-T. Catalytic activities under pseudo first order conditions were compared at different Mg 2+ concentrations, indicating that certain 2′-C-methyl modified DNAzymes have significant activities. Resistance against MCF-7 cell lysate and endonuclease RQ1 was also measured, showing that the introduction of 2′-C-methyl-2′-deoxynucleosides increased the stability.