Preclinical Antimalarial Combination Study of M5717, a Plasmodium falciparum Elongation Factor 2 Inhibitor, and Pyronaridine, a Hemozoin Formation Inhibitor
Autor: | Thomas Spangenberg, Matthias Rottmann, Beatrice Greco, Xiaoyan Yin, Satish K. Dhingra, Christin Gumpp, Claude Oeuvray, Lassina Badolo, Brian Jonat, David A. Fidock, Marla J. Giddins |
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Rok vydání: | 2020 |
Předmět: |
Hemeproteins
Drug media_common.quotation_subject Plasmodium falciparum Drug Resistance drug combination malaria Mice SCID Drug resistance Biology Pharmacology isobologram Antimalarials Mice 03 medical and health sciences Peptide Elongation Factor 2 Pharmacokinetics In vivo parasitic diseases Animals SCID mouse Experimental Therapeutics Pharmacology (medical) Malaria Falciparum Naphthyridines 030304 developmental biology media_common Pyronaridine 0303 health sciences 030306 microbiology Hemozoin M5717 biology.organism_classification Infectious Diseases Drug development pyronaridine Quinolines Drug Therapy Combination resistant mutant |
Zdroj: | Antimicrobial Agents and Chemotherapy |
ISSN: | 1098-6596 0066-4804 |
Popis: | Antimalarial drug resistance in the Plasmodium falciparum parasite poses a constant challenge for drug development. To mitigate this risk, new antimalarial medicines should be developed as fixed-dose combinations. Assessing the pharmacodynamic interactions of potential antimalarial drug combination partners during early phases of development is essential in developing the targeted parasitological and clinical profile of the final drug product. Here, we have studied the combination of M5717, a P. falciparum translation elongation factor 2 inhibitor, and pyronaridine, an inhibitor of hemozoin formation. Antimalarial drug resistance in the Plasmodium falciparum parasite poses a constant challenge for drug development. To mitigate this risk, new antimalarial medicines should be developed as fixed-dose combinations. Assessing the pharmacodynamic interactions of potential antimalarial drug combination partners during early phases of development is essential in developing the targeted parasitological and clinical profile of the final drug product. Here, we have studied the combination of M5717, a P. falciparum translation elongation factor 2 inhibitor, and pyronaridine, an inhibitor of hemozoin formation. Our test cascade consisted of in vitro isobolograms as well as in vivo studies in the P. falciparum severe combined immunodeficient (SCID) mouse model. We also analyzed pharmacokinetic and pharmacodynamic parameters, including genomic sequencing of recrudescent parasites. We observed no pharmacokinetic interactions with the combination of M5717 and pyronaridine. M5717 did not negatively impact the rate of kill of the faster-acting pyronaridine, and the latter was able to suppress the selection of M5717-resistant mutants, as well as significantly delay the recrudescence of parasites both with suboptimal and optimal dosing regimens. |
Databáze: | OpenAIRE |
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