Publish
Home
Live
new
RH Journal
ResearchCoin
Grants
Funding
Browse
Journals
Hubs
Tools
Lab Notebook
Beta
Reference Manager
Resources
Verify Identity
Community
Support
About
Terms
Privacy
Issues
Docs
Author
Log in
Sign up
EM
Elizabeth Martinez-Scholze
Author with expertise in Global Impact of Arboviral Diseases
Achievements
Open Access Advocate
Key Stats
Upvotes received:
0
Publications:
2
(50% Open Access)
Cited by:
3
h-index:
1
/
i10-index:
0
Reputation
Biology
< 1%
Chemistry
< 1%
Economics
< 1%
Show more
How is this calculated?
Overview
Publications
2
Peer Reviews
Comments
Grants
Publications
0
Broadly inhibitory antibodies against severe malaria virulence proteins
Raphael Reyes
et al.
Jan 25, 2024
Abstract Plasmodium falciparum pathology is driven by the accumulation of parasite-infected erythrocytes in microvessels. This process is mediated by the parasite’s polymorphic erythrocyte membrane protein 1 (PfEMP1) adhesion proteins. A subset of PfEMP1 variants that bind human endothelial protein C receptor (EPCR) through their CIDRα1 domains is responsible for severe malaria pathogenesis. A longstanding question is whether individual antibodies can recognize the large repertoire of circulating PfEMP1 variants. Here, we describe two broadly reactive and binding-inhibitory human monoclonal antibodies against CIDRα1. The antibodies isolated from two different individuals exhibited a similar and consistent EPCR-binding inhibition of 34 CIDRα1 domains, representing five of the six subclasses of CIDRα1. Both antibodies inhibited EPCR binding of both recombinant full-length and native PfEMP1 proteins as well as parasite sequestration in bioengineered 3D brain microvessels under physiologically relevant flow conditions. Structural analyses of the two antibodies in complex with two different CIDRα1 antigen variants reveal similar binding mechanisms that depend on interactions with three highly conserved amino acid residues of the EPCR-binding site in CIDRα1. These broadly reactive antibodies likely represent a common mechanism of acquired immunity to severe malaria and offer novel insights for the design of a vaccine or treatment targeting severe malaria.
Immunology
Cell Biology
0
Paper
Immunology
2
0
Save
0
Broadly inhibitory antibodies to severe malaria virulence proteins
Raphael Reyes
et al.
Nov 20, 2024
Immunology
Virology
0
Paper
Immunology
1
0
Save