Structure-guided identification of a family of dual receptor-binding PfEMP1 that is associated with cerebral malaria
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- Structure-guided identification of a family of dual receptor-binding PfEMP1 that is associated with cerebral malaria
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Cerebral malaria is a deadly outcome of infection by Plasmodium falciparum, occurring when parasite-infected erythrocytes accumulate in the brain. These erythrocytes display parasite proteins of the PfEMP1 family that bind various endothelial receptors. Despite the importance of cerebral malaria, a binding phenotype linked to its symptoms has not been identified. Here, we used structural biology to determine how a group of PfEMP1 proteins interacts with intercellular adhesion molecule 1 (ICAM-1), allowing us to predict binders from a specific sequence motif alone. Analysis of multiple Plasmodium falciparum genomes showed that ICAM-1-binding PfEMP1s also interact with endothelial protein C receptor (EPCR), allowing infected erythrocytes to synergistically bind both receptors. Expression of these PfEMP1s, predicted to bind both ICAM-1 and EPCR, is associated with increased risk of developing cerebral malaria. This study therefore reveals an important PfEMP1-binding phenotype that could be targeted as part of a strategy to prevent cerebral malaria.
Original language | English |
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Journal | Cell Host & Microbe |
Volume | 21 |
Issue number | 3 |
Pages (from-to) | 403-414 |
Number of pages | 12 |
ISSN | 1931-3128 |
DOIs | |
Publication status | Published - 8 Mar 2017 |
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