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dc.contributor.authorRoss, Leila S.
dc.contributor.authorDhingra, Satish K.
dc.contributor.authorTakala-Harrison, Shannon
dc.creatorRoss, L.
dc.date.accessioned2019-07-03T15:33:57Z
dc.date.available2019-07-03T15:33:57Z
dc.date.issued2018-12-01
dc.identifier.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85051627566&origin=inward
dc.identifier.urihttp://hdl.handle.net/10713/9854
dc.description.abstractThe widely used antimalarial combination therapy dihydroartemisinin + piperaquine (DHA + PPQ) has failed in Cambodia. Here, we perform a genomic analysis that reveals a rapid increase in the prevalence of novel mutations in the Plasmodium falciparum chloroquine resistance transporter PfCRT following DHA + PPQ implementation. These mutations occur in parasites harboring the K13 C580Y artemisinin resistance marker. By introducing PfCRT mutations into sensitive Dd2 parasites or removing them from resistant Cambodian isolates, we show that the H97Y, F145I, M343L, or G353V mutations each confer resistance to PPQ, albeit with fitness costs for all but M343L. These mutations sensitize Dd2 parasites to chloroquine, amodiaquine, and quinine. In Dd2 parasites, multicopy plasmepsin 2, a candidate molecular marker, is not necessary for PPQ resistance. Distended digestive vacuoles were observed in pfcrt-edited Dd2 parasites but not in Cambodian isolates. Our findings provide compelling evidence that emerging mutations in PfCRT can serve as a molecular marker and mediator of PPQ resistance. © 2018, The Author(s).en_US
dc.description.sponsorshipunding for this work was provided in part by R01 AI50234 and R01 AI124678 (to D.A. F.), NRSA fellowship F32 AI120578 (to L.S.R.), R01 AI125579 (to S.T.H.), and the Intramural Research Program of the NIAID, NIH (R.M.F.).en_US
dc.description.urihttps://doi.org/10.1038/s41467-018-05652-0en_US
dc.language.isoen_USen_US
dc.publisherNature Publishing Groupen_US
dc.relation.ispartofNature Communicationsen_US
dc.subjectPfCRT protein, Plasmodium falciparumen_US
dc.subjectpiperaquineen_US
dc.subject.meshMalaria, Falciparumen_US
dc.subject.meshDrug Resistanceen_US
dc.subject.meshGene Editingen_US
dc.subject.meshCambodiaen_US
dc.titleEmerging Southeast Asian PfCRT mutations confer Plasmodium falciparum resistance to the first-line antimalarial piperaquineen_US
dc.typeArticleen_US
dc.identifier.doi10.1038/s41467-018-05652-0
dc.identifier.pmid30115924
dc.relation.volume9


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