WR99210 is a potent inhibitor of Plasmodium falciparum dihydrofolate reductase (DHFR), which is a major malarial drug target. It has subnanomolar potency for the wild type, double mutant and quadruple mutant dihydrofolate reductases.
Molecular and biochemical parasitology, 117(1), 91-102 (2001-09-12)
We have expressed dhfr alleles of Plasmodium falciparum in the budding yeast, Saccharomyces cerevisiae, and used this yeast model to identify single amino acid substitutions that confer high level pyrimethamine resistance on the background of the triple mutant dhfr (I51+R59+N108).
Molecular and biochemical parasitology, 117(2), 155-160 (2001-10-19)
The limited number of selectable markers available for malaria transfection has hindered extensive manipulation of the Plasmodium falciparum genome and subsequently thorough genetic analysis of this organism. In this paper, we demonstrate that P. falciparum is highly sensitive to the
The nature of the interactions between Plasmodium falciparum dihydrofolate reductase (pfDHFR) and antimalarial antifolates, i.e., pyrimethamine (Pyr), cycloguanil (Cyc) and WR99210 including some of their analogues, was investigated by molecular modeling in conjunction with the determination of the inhibition constants
The American journal of tropical medicine and hygiene, 75(4), 617-621 (2006-10-14)
The increasing use of sulfadoxine-pyrimethamine (SP) for the treatment of chloroquine-resistant Plasmodium falciparum has resulted in increased reports of SP resistance of P. falciparum worldwide. Selection of SP-resistant Plasmodium vivax in areas where P. falciparum and P. vivax co-exist is
The lack of suitable antimalarial agents to replace chloroquine and pyrimethamine/sulfadoxine threatens efforts to control the spread of drug-resistant strains of the malaria parasite Plasmodium falciparum. Here we describe a transformation system, involving WR99210 selection of parasites transformed with either
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