0000000000992079

AUTHOR

Ines Schmidt

showing 2 related works from this author

Bistacrines as potential antitrypanosomal agents

2017

Human African Trypanosomiasis (HAT) is caused by two subspecies of the genus Trypanosoma, namely Trypanosoma brucei rhodesiense and Trypanosoma brucei gambiense. The disease is fatal if left untreated and therapy is limited due to only five non-adequate drugs currently available. In preliminary studies, dimeric tacrine derivatives were found to inhibit parasite growth with IC50-values in the nanomolar concentration range. This prompted the synthesis of a small, but smart library of monomeric and dimeric tacrine-type compounds and their evaluation of antiprotozoal activity. Rhodesain, a lysosomal cathepsin-L like cysteine protease of T. brucei rhodesiense is essential for parasite survival a…

0301 basic medicinemedicine.drug_classTrypanosoma brucei bruceiClinical BiochemistryPharmaceutical ScienceFlavoproteinBiochemistryCell LineMiceStructure-Activity Relationship03 medical and health sciencesParasitic Sensitivity TestsOxidoreductaseparasitic diseasesDrug DiscoverymedicineAnimalsAfrican trypanosomiasisMolecular BiologyCell Proliferationchemistry.chemical_classificationDose-Response Relationship DrugMolecular StructurebiologyChemistryOrganic ChemistryTrypanosoma brucei rhodesiensemedicine.diseasebiology.organism_classificationTrypanocidal AgentsCysteine proteaseTrypanosomiasis African030104 developmental biologyBiochemistryTacrineTacrineAntiprotozoalbiology.proteinMolecular MedicineProtozoamedicine.drugBioorganic & Medicinal Chemistry
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Bistacrine derivatives as new potent antimalarials

2016

Linking two tacrine molecules results in a tremendous increase of activity against Plasmodia in comparison to the monomer. This finding prompted the synthesis of a library of monomeric and dimeric tacrine derivatives in order to derive structure-activity relationships. The most active compounds towards chloroquine sensitive Plasmodium strain 3D7 and chloroquine resistant strain Dd2 show IC50 values in the nanomolar range of concentration, low cytotoxicity and target the cysteine protease falcipain-2, which is essential for parasite growth.

0301 basic medicinePlasmodiumSpectrometry Mass Electrospray IonizationStereochemistryProton Magnetic Resonance SpectroscopyClinical BiochemistryPharmaceutical Science01 natural sciencesBiochemistryAntimalarialsInhibitory Concentration 50Structure-Activity Relationship03 medical and health scienceschemistry.chemical_compoundChloroquineResistant strainDrug DiscoverymedicineAnimalsStructure–activity relationshipCarbon-13 Magnetic Resonance SpectroscopyCytotoxicityMolecular BiologyStrain (chemistry)010405 organic chemistryOrganic ChemistryCysteine protease0104 chemical sciences030104 developmental biologyMonomerchemistryBiochemistryTacrineTacrineMolecular MedicineDimerizationmedicine.drugBioorganic & Medicinal Chemistry
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