Abstract:
:The tropical diseases human African trypanosomiasis, Chagas disease, and the various forms of leishmaniasis are caused by parasites of the family of trypanosomatids. These protozoa possess a unique redox metabolism based on trypanothione and trypanothione reductase (TR), making TR a promising drug target. We report the optimization of properties and potency of cyclohexylpyrrolidine inhibitors of TR by structure-based design. The best inhibitors were freely soluble and showed competitive inhibition constants (Ki ) against Trypanosoma (T.) brucei TR and T. cruzi TR and in vitro activities (half-maximal inhibitory concentration, IC50 ) against these parasites in the low micromolar range, with high selectivity against human glutathione reductase. X-ray co-crystal structures confirmed the binding of the ligands to the hydrophobic wall of the "mepacrine binding site" with the new, solubility-providing vectors oriented toward the surface of the large active site.
journal_name
ChemMedChemjournal_title
ChemMedChemauthors
De Gasparo R,Brodbeck-Persch E,Bryson S,Hentzen NB,Kaiser M,Pai EF,Krauth-Siegel RL,Diederich Fdoi
10.1002/cmdc.201800067subject
Has Abstractpub_date
2018-05-08 00:00:00pages
957-967issue
9eissn
1860-7179issn
1860-7187journal_volume
13pub_type
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