TY - JOUR
T1 - Pyrazoleamide compounds are potent antimalarials that target Na+ homeostasis in intraerythrocytic Plasmodium falciparum
AU - Vaidya, Akhil B.
AU - Morrisey, Joanne M.
AU - Zhang, Zhongsheng
AU - Das, Sudipta
AU - Daly, Thomas M.
AU - Otto, Thomas D.
AU - Spillman, Natalie J.
AU - Wyvratt, Matthew
AU - Siegl, Peter
AU - Marfurt, Jutta
AU - Wirjanata, Grennady
AU - Sebayang, Boni F.
AU - Price, Ric N.
AU - Chatterjee, Arnab
AU - Nagle, Advait
AU - Stasiak, Marcin
AU - Charman, Susan A.
AU - Angulo-Barturen, Iñigo
AU - Ferrer, Santiago
AU - Belén Jiménez-Díaz, María
AU - Martínez, María Santos
AU - Gamo, Francisco Javier
AU - Avery, Vicky M.
AU - Ruecker, Andrea
AU - Delves, Michael
AU - Kirk, Kiaran
AU - Berriman, Matthew
AU - Kortagere, Sandhya
AU - Burrows, Jeremy
AU - Fan, Erkang
AU - Bergman, Lawrence W.
N1 - Publisher Copyright:
© 2014 Macmillan Publishers Limited. All rights reserved.
PY - 2014
Y1 - 2014
N2 - The quest for new antimalarial drugs, especially those with novel modes of action, is essential in the face of emerging drug-resistant parasites. Here we describe a new chemical class of molecules, pyrazoleamides, with potent activity against human malaria parasites and showing remarkably rapid parasite clearance in an in vivo model. Investigations involving pyrazoleamide-resistant parasites, whole-genome sequencing and gene transfers reveal that mutations in two proteins, a calcium-dependent protein kinase (PfCDPK5) and a P-type cation-ATPase (PfATP4), are necessary to impart full resistance to these compounds. A pyrazoleamide compound causes a rapid disruption of Na+ regulation in blood-stage Plasmodium falciparum parasites. Similar effect on Na+ homeostasis was recently reported for spiroindolones, which are antimalarials of a chemical class quite distinct from pyrazoleamides. Our results reveal that disruption of Na+ homeostasis in malaria parasites is a promising mode of antimalarial action mediated by at least two distinct chemical classes.
AB - The quest for new antimalarial drugs, especially those with novel modes of action, is essential in the face of emerging drug-resistant parasites. Here we describe a new chemical class of molecules, pyrazoleamides, with potent activity against human malaria parasites and showing remarkably rapid parasite clearance in an in vivo model. Investigations involving pyrazoleamide-resistant parasites, whole-genome sequencing and gene transfers reveal that mutations in two proteins, a calcium-dependent protein kinase (PfCDPK5) and a P-type cation-ATPase (PfATP4), are necessary to impart full resistance to these compounds. A pyrazoleamide compound causes a rapid disruption of Na+ regulation in blood-stage Plasmodium falciparum parasites. Similar effect on Na+ homeostasis was recently reported for spiroindolones, which are antimalarials of a chemical class quite distinct from pyrazoleamides. Our results reveal that disruption of Na+ homeostasis in malaria parasites is a promising mode of antimalarial action mediated by at least two distinct chemical classes.
UR - http://www.scopus.com/inward/record.url?scp=84923311088&partnerID=8YFLogxK
U2 - 10.1038/ncomms6521
DO - 10.1038/ncomms6521
M3 - Article
SN - 2041-1723
VL - 5
JO - Nature Communications
JF - Nature Communications
M1 - 5521
ER -