A Plasmodium falciparum genetic cross reveals the contributions of pfcrt and plasmepsin II/III to piperaquine drug resistance
Piperaquine (PPQ) is widely used in combination with dihydroartemisinin (DHA) as a first-line treatment against malaria parasites. Multiple genetic drivers of PPQ resistance have been reported, including mutations in the Plasmodium falciparum chloroquine resistance transporter (pfcrt) and increased copies of plasmepsin II/III (pm2/3). We generated a cross between a Cambodia-derived multi-drug resistant KEL1/PLA1 lineage isolate (KH004) and a drug susceptible parasite isolated in Malawi (Mal31). Mal31 harbors a wild-type (3D7-like) pfcrt allele and a single copy of pm2/3, while KH004 has a chloroquine-resistant (Dd2-like) pfcrt allele with an additional G367C substitution and four copies of pm2/3. We recovered 104 unique recombinant progeny and examined a targeted set of progeny representing all possible combinations of variants at pfcrt and pm2/3 for detailed analysis of competitive fitness and a range of PPQ susceptibility phenotypes, including PPQ survival assay (PSA), area under the dose-response curve (AUC), and a limited point IC50 (LP-IC50). We find that inheritance of the KH004 pfcrt allele is required for PPQ resistance, whereas copy number variation in pm2/3 further enhances resistance but does not confer resistance in the absence of PPQ-R-associated mutations in pfcrt. Deeper investigation of genotype-phenotype relationships demonstrates that progeny clones from experimental crosses can be used to understand the relative contributions of pfcrt, pm2/3, and parasite genetic background, to a range of PPQ-related traits and confirm the critical role of the PfCRT G367C substitution in PPQ resistance.
Medienart: |
E-Artikel |
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Erscheinungsjahr: |
2023 |
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Erschienen: |
2023 |
Enthalten in: |
Zur Gesamtaufnahme - year:2023 |
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Enthalten in: |
bioRxiv : the preprint server for biology - (2023) vom: 17. Sept. |
Sprache: |
Englisch |
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Beteiligte Personen: |
Kane, John [VerfasserIn] |
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Links: |
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Anmerkungen: |
Date Revised 27.02.2024 published: Electronic Citation Status PubMed-not-MEDLINE |
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doi: |
10.1101/2023.06.06.543862 |
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funding: |
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Förderinstitution / Projekttitel: |
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PPN (Katalog-ID): |
NLM362419582 |
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100 | 1 | |a Kane, John |e verfasserin |4 aut | |
245 | 1 | 2 | |a A Plasmodium falciparum genetic cross reveals the contributions of pfcrt and plasmepsin II/III to piperaquine drug resistance |
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520 | |a Piperaquine (PPQ) is widely used in combination with dihydroartemisinin (DHA) as a first-line treatment against malaria parasites. Multiple genetic drivers of PPQ resistance have been reported, including mutations in the Plasmodium falciparum chloroquine resistance transporter (pfcrt) and increased copies of plasmepsin II/III (pm2/3). We generated a cross between a Cambodia-derived multi-drug resistant KEL1/PLA1 lineage isolate (KH004) and a drug susceptible parasite isolated in Malawi (Mal31). Mal31 harbors a wild-type (3D7-like) pfcrt allele and a single copy of pm2/3, while KH004 has a chloroquine-resistant (Dd2-like) pfcrt allele with an additional G367C substitution and four copies of pm2/3. We recovered 104 unique recombinant progeny and examined a targeted set of progeny representing all possible combinations of variants at pfcrt and pm2/3 for detailed analysis of competitive fitness and a range of PPQ susceptibility phenotypes, including PPQ survival assay (PSA), area under the dose-response curve (AUC), and a limited point IC50 (LP-IC50). We find that inheritance of the KH004 pfcrt allele is required for PPQ resistance, whereas copy number variation in pm2/3 further enhances resistance but does not confer resistance in the absence of PPQ-R-associated mutations in pfcrt. Deeper investigation of genotype-phenotype relationships demonstrates that progeny clones from experimental crosses can be used to understand the relative contributions of pfcrt, pm2/3, and parasite genetic background, to a range of PPQ-related traits and confirm the critical role of the PfCRT G367C substitution in PPQ resistance | ||
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700 | 1 | |a Li, Xue |e verfasserin |4 aut | |
700 | 1 | |a Kumar, Sudhir |e verfasserin |4 aut | |
700 | 1 | |a Button-Simons, Katrina A |e verfasserin |4 aut | |
700 | 1 | |a Brenneman, Katelyn M Vendrely |e verfasserin |4 aut | |
700 | 1 | |a Dahlhoff, Haley |e verfasserin |4 aut | |
700 | 1 | |a Sievert, Mackenzie A C |e verfasserin |4 aut | |
700 | 1 | |a Checkley, Lisa A |e verfasserin |4 aut | |
700 | 1 | |a Shoue, Douglas A |e verfasserin |4 aut | |
700 | 1 | |a Singh, Puspendra P |e verfasserin |4 aut | |
700 | 1 | |a Abatiyow, Biley A |e verfasserin |4 aut | |
700 | 1 | |a Haile, Meseret T |e verfasserin |4 aut | |
700 | 1 | |a Nair, Shalini |e verfasserin |4 aut | |
700 | 1 | |a Reyes, Ann |e verfasserin |4 aut | |
700 | 1 | |a Tripura, Rupam |e verfasserin |4 aut | |
700 | 1 | |a Peto, Tom |e verfasserin |4 aut | |
700 | 1 | |a Lek, Dysoley |e verfasserin |4 aut | |
700 | 1 | |a Kappe, Stefan H I |e verfasserin |4 aut | |
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700 | 1 | |a Cheeseman, Ian H |e verfasserin |4 aut | |
700 | 1 | |a Vaughan, Ashley M |e verfasserin |4 aut | |
700 | 1 | |a Anderson, Timothy J C |e verfasserin |4 aut | |
700 | 1 | |a Ferdig, Michael T |e verfasserin |4 aut | |
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