6533b860fe1ef96bd12c3b63
RESEARCH PRODUCT
Development of Novel Peptide-Based Michael Acceptors Targeting Rhodesain and Falcipain-2 for the Treatment of Neglected Tropical Diseases (NTDs)
Annika WagnerAnnika WagnerR. Luise Krauth-siegelSilvana GrassoKhawla ChoucheneJiri GutUte A. HellmichUte A. HellmichKathrin UlrichPeter WichPhilip J. RosenthalRoberta EttariMaria ZappalàGiorgio AmendolaTanja SchirmeisterSanto PrevitiSandro CosconatiIra Schmidsubject
0301 basic medicineCathepsin LAntimalarialPeptideHeLa Cell01 natural sciencesCysteine Proteinase InhibitorDipeptideDrug DiscoveryPeptide sequencechemistry.chemical_classificationTrypanocidal AgentbiologyNeglected DiseasesStereoisomerismDipeptidesTrypanocidal AgentsMAJOR CYSTEINE PROTEASE PLASMODIUM-FALCIPARUM TRYPANOSOMA-BRUCEI CONFORMATIONAL-ANALYSIS BIOLOGICAL EVALUATION HIGHLY POTENT VINYL-ESTER INHIBITORS PEPTIDOMIMETICS SUBSTRATEMolecular Docking SimulationCysteine EndopeptidasesBiochemistryMolecular MedicineHumanProteasesNeglected DiseaseStereochemistryPhenylalaninePlasmodium falciparumTrypanosoma brucei bruceiCysteine Proteinase InhibitorsMolecular Dynamics SimulationTrypanosoma bruceiAntimalarialsStructure-Activity Relationship03 medical and health sciencesparasitic diseasesHumansStructure–activity relationship010405 organic chemistryDrug Discovery3003 Pharmaceutical ScienceHydrogen BondingTrypanosoma brucei rhodesiensePlasmodium falciparumbiology.organism_classificationMalaria0104 chemical sciencesTrypanosomiasis African030104 developmental biologychemistryCarbamateCarbamatesCysteine EndopeptidaseHeLa CellsCysteinedescription
This paper describes the development of a class of peptide-based inhibitors as novel antitrypanosomal and antimalarial agents. The inhibitors are based on a characteristic peptide sequence for the inhibition of the cysteine proteases rhodesain of Trypanosoma brucei rhodesiense and falcipain-2 of Plasmodium falciparum. We exploited the reactivity of novel unsaturated electrophilic functions such as vinyl-sulfones, -ketones, -esters, and -nitriles. The Michael acceptors inhibited both rhodesain and falcipain-2, at nanomolar and micromolar levels, respectively. In particular, the vinyl ketone 3b has emerged as a potent rhodesain inhibitor (k2nd = 67 × 106 M-1 min-1), endowed with a picomolar binding affinity (Ki = 38 pM), coupled with a single-digit micromolar activity against Trypanosoma brucei brucei (EC50 = 2.97 μM), thus being considered as a novel lead compound for the discovery of novel effective antitrypanosomal agents.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-01-01 | Journal of Medicinal Chemistry |