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Published on: January 14, 2017
Bulge oligonucleotide as an inhibitory agent of bacterial topoisomerase I
Zhaoqi Yang1,2, Tuoyu Jiang2, Hanshi Zhong2
1a School of Pharmaceutical Sciences , Jiangnan University , Jiangsu , People's Republic of China.
Abstract:
Bacterial topoisomerase I (Btopo I) was defined as potential target for discovery of new antibacterial compounds. Various oligonucleotides containing bulge structure were designed and synthesised as inhibitors to Btopo I in this investigation. The results of this study demonstrated that the designed oligonucleotides display high inhibitory efficiency on the activity of Btopo I and the inhibitory effect could be modulated by the amount of bulge DNA bases. The most efficient one among them showed an IC50 value of 63.1 nM in its inhibition on the activity of Btopo I. In addition, our studies confirmed that the designed oligonucleotide would induce irreversible damages to Btopo I and without any effects occur to eukaryotic topoisomerase I. It is our hope that the results provided in these studies could provide a novel way to inhibit Btopo I.
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