Identification of potent inhibitors of the Trypanosoma brucei methionyl-tRNA synthetase via high-throughput orthogonal screening.
Identification of potent inhibitors of the Trypanosoma brucei methionyl-tRNA synthetase via high-throughput orthogonal screening.
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DOI:
10.1177/1087057114548832
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发表时间:
2015-01
影响因子:
--
通讯作者:
Hodder P
中科院分区:
文献类型:
--
作者:
Pedró-Rosa L;Buckner FS;Ranade RM;Eberhart C;Madoux F;Gillespie JR;Koh CY;Brown S;Lohse J;Verlinde CL;Fan E;Bannister T;Scampavia L;Hol WG;Spicer T;Hodder P
Improved therapies for the treatment of Trypanosoma brucei (T. brucei), the etiological agent of the neglected tropical disease human African trypanosomiasis, are urgently needed. We targeted T. brucei methionyl-tRNA synthetase (MetRS), an aminoacyl-tRNA synthase (aaRS), which is considered an important drug target due to its role in protein synthesis, cell survival and its significant differences in structure from its mammalian ortholog. Previous work using RNA interference of MetRS demonstrated growth inhibition of T. brucei, further validating it as an attractive target. We report the development and implementation of two orthogonal high throughput screening assays to identify inhibitors of T. brucei MetRS. First, a chemiluminescence assay was implemented in 1536-well plate format and used to monitor ATP depletion during the aminoacylation reaction. Hit confirmation then used a counterscreen in which AMP production was assessed using fluorescence polarization technology. In addition, a miniaturized cell viability assay was used to triage cytotoxic compounds. Finally, lower throughput assays involving whole parasite growth inhibition of both human and parasite MetRS were used to analyze compound selectivity and efficacy. The outcome of this HTS campaign has led to the discovery of nineteen potent and selective T. brucei MetRS inhibitors.
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DOI:
10.1016/j.str.2012.07.011
发表时间:
2012-10-10
期刊:
Structure (London, England : 1993)
影响因子:
--
作者:
Koh CY;Kim JE;Shibata S;Ranade RM;Yu M;Liu J;Gillespie JR;Buckner FS;Verlinde CL;Fan E;Hol WG
通讯作者:
Hol WG
影响因子:
--
作者:
Madoux F;Simanski S;Chase P;Mishra JK;Roush WR;Ayad NG;Hodder P
通讯作者:
Hodder P
影响因子:
4.5
作者:
Raczniak, G;Ibba, M;Söll, D
通讯作者:
Söll, D
影响因子:
4.1
作者:
GODEAU, JM;CHARLIER, J
通讯作者:
CHARLIER, J
影响因子:
--
作者:
Wu, G;Yuan, Y;Hodge, CN
通讯作者:
Hodge, CN