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PG12, a Phospholipid Analog with Potent Antimalarial Activity, Inhibits Plasmodium falciparum CTP:Phosphocholine Cytidylyltransferase Activity

AutorGonzález-Bulnes, Patricia; Bobenchik, April M.; Augagneur, Yoann; Cerdan, Rachel; Vial, Henri J.; Llebaria, Amadeu; Ben Mamoun, Choukri
Palabras claveInfectious Diseases
Malaria
Parasite Metabolism
Phosphatidylcholine
Phospholipid
Fecha de publicación2011
EditorAmerican Society for Biochemistry and Molecular Biology
CitaciónJournal of Biological Chemistry
ResumenIn the human malaria parasite Plasmodium falciparum, the synthesis of the major and essential membrane phospholipid, phosphatidylcholine, occurs via the CDP-choline and the serine decarboxylase phosphoethanolamine methylation (SDPM) pathways, which are fueled by host choline, serine, and fatty acids. Both pathways share the final two steps catalyzed by two essential enzymes, P. falciparum CTP:phosphocholine cytidylyltransferase (PfCCT) and choline-phosphate transferase (PfCEPT). We identified a novel class of phospholipid mimetics, which inhibit the growth of P. falciparum as well as Leishmania and Trypanosoma species. Metabolic analyses showed that one of these compounds, PG12, specifically blocks phosphatidylcholine biosynthesis from both the CDP-choline and SDPM pathways via inhibition of PfCCT. In vitro studies using recombinant PfCCT showed a dose-dependent inhibition of the enzyme by PG12. The potent antimalarial of this compound, its low cytotoxicity profile, and its established mode of action make it an excellent lead to advance for further drug development and efficacy in vivo.
Versión del editorhttp://dx.doi.org/10.1074/jbc.M111.268946
URIhttp://hdl.handle.net/10261/47805
DOI10.1074/jbc.M111.268946
ISSN0021-9258
E-ISSN1083-351X
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