Application of Fragment-Based Drug Discovery against DNA GyraseB

被引:14
|
作者
Chen, Guo-Ying [1 ]
Ng, Fui Mee [1 ]
Tan, Yih Wan [1 ]
Poulsen, Anders [1 ]
Seetoh, Weiguang [1 ]
Lin, Grace [1 ]
Kang, CongBao [1 ]
Then, Siew Wen [1 ]
Ahmad, Nur Huda [1 ]
Wong, Ying Lei [1 ]
Ng, Hui Qi [1 ]
Chia, C. S. Brian [1 ]
Lau, Qiu Ying [1 ]
Hill, Jeffrey [1 ]
Hung, Alvin W. [1 ]
Keller, Thomas H. [1 ]
机构
[1] ASTAR, Ctr Expt Therapeut, Singapore 138667, Singapore
来源
CHEMPLUSCHEM | 2015年 / 80卷 / 08期
关键词
antibiotics; drug design; drug discovery; inhibitors; ligand effects; MYCOBACTERIUM-TUBERCULOSIS; ANTIBACTERIAL AGENTS; TOPOISOMERASE-IV; B PROTEIN; INHIBITORS; OPTIMIZATION; POTENT; HIT; RESISTANCE; DESIGN;
D O I
10.1002/cplu.201500197
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Bacterial resistance to antibiotics remains a serious threat to global health. The gyraseB enzyme is a well-validated target for developing antibacterial drugs. Despite being an attractive target for antibiotic development, there are currently no gyraseB inhibitory drugs on the market. A fragment screen using 1,800compounds identified 14fragments that bind to Escherichia coli (E.coli) gyraseB. The detailed characterization of binding is described for all 14fragments. With the aid of X-ray crystallography, modifications on a low-affinity fragment (K-D=253M, IC50=634M) has led to the development of a new class of potent phenyl aminopyrazole inhibitors against E.coli gyraseB (IC50=160nM). The study presented here combines the use of a set of biophysical techniques including differential scanning fluorimetry, nuclear magnetic resonance, isothermal titration calorimetry, and X-ray crystallography to methodically identify, quantify, and optimize fragments into new chemical leads.
引用
收藏
页码:1250 / 1254
页数:5
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