Abstract
Targeted metabolite profiling has aided in the understanding of a variety of biological processes in the malaria parasite as well as in drug discovery. A fast and sensitive analytical method, based on ion-pairing reversed phase ultra-high performance liquid chromatography tandem mass spectrometry (IP-RP-UPLC-MS/MS), was optimized for the simultaneous analysis of intracellular levels of 35 purine and pyrimidine nucleobases, nucleosides, and nucleotides. This analytical method allows for chromatographic separation of highly polar metabolites using reverse phase chemistry within 15 min. The analytical performance of the method was evaluated and successfully applied to the quantification of purines and pyrimidines in Plasmodium falciparum and its host cell, the human erythrocyte. In addition, this method can be customized to include other related metabolites such as NADPH and NADP, among others.
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