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Title: Broadly neutralizing epitopes in the Plasmodium vivax vaccine candidate Duffy Binding Protein

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America
 [1];  [1];  [1];  [2];  [1];  [1];  [2];  [1]
  1. Washington Univ. School of Medicine in St. Louis, St. Louis, MO (United States)
  2. Univ. of South Florida, Tampa, FL (United States)

Plasmodium vivax Duffy Binding Protein (PvDBP) is the most promising vaccine candidate for P. vivax malaria. The polymorphic nature of PvDBP induces strain-specific immune responses, however, and the epitopes of broadly neutralizing antibodies are unknown. These features hamper the rational design of potent DBP-based vaccines and necessitate the identification of globally conserved epitopes. Using X-ray crystallography, small-angle X-ray scattering, hydrogen-deuterium exchange mass spectrometry, and mutational mapping, we have defined epitopes for three inhibitory mAbs (mAbs 2D10, 2H2, and 2C6) and one noninhibitory mAb (3D10) that engage DBP. These studies expand the currently known inhibitory epitope repertoire by establishing protective motifs in subdomain three outside the receptor-binding and dimerization residues of DBP, and introduce globally conserved protective targets. All of the epitopes are highly conserved among DBP alleles. In conclusion, the identification of broadly conserved epitopes of inhibitory antibodies provides critical motifs that should be retained in the next generation of potent vaccines for P. vivax malaria.

Research Organization:
Univ. of California, Berkeley, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1347692
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Vol. 113, Issue 22; ISSN 0027-8424
Publisher:
National Academy of Sciences, Washington, DC (United States)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 71 works
Citation information provided by
Web of Science

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  • VanBuskirk, Kelley M.; Cole‐Tobian, Jennifer L.; Baisor, Moses
  • The Journal of Infectious Diseases, Vol. 190, Issue 9 https://doi.org/10.1086/424852
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Structural basis for neutralization of Plasmodium vivax by naturally acquired human antibodies that target DBP journal May 2019
Shed EBA-175 mediates red blood cell clustering that enhances malaria parasite growth and enables immune evasion journal December 2018
Suppressing allostery in epitope mapping experiments using millisecond hydrogen / deuterium exchange mass spectrometry journal October 2017
Structural basis for inhibition of Plasmodium vivax invasion by a broadly neutralizing vaccine-induced human antibody journal May 2019
Human vaccination against Plasmodium vivax Duffy-binding protein induces strain-transcending antibodies journal June 2017
Diversity pattern of Duffy binding protein sequence among Duffy-negatives and Duffy-positives in Sudan journal August 2018
Computational identification of antibody epitopes of human papillomavirus 16 (HPV16) L1 proteins journal March 2018
On the Evolution and Function of Plasmodium vivax Reticulocyte Binding Surface Antigen (pvrbsa) journal September 2018
Malaria parasite CelTOS targets the inner leaflet of cell membranes for pore-dependent disruption journal December 2016
Identification of an Immunogenic Broadly Inhibitory Surface Epitope of the Plasmodium vivax Duffy Binding Protein Ligand Domain journal May 2019
The immunology of Plasmodium vivax malaria journal October 2019
Novel Strategies for Malaria Vaccine Design journal November 2018
Moderately Neutralizing Epitopes in Nonfunctional Regions Dominate the Antibody Response to Plasmodium falciparum EBA-140 journal January 2019
The Presence, Persistence and Functional Properties of Plasmodium vivax Duffy Binding Protein II Antibodies Are Influenced by HLA Class II Allelic Variants journal December 2016
High-Definition Mapping of Four Spatially Distinct Neutralizing Epitope Clusters on RiVax, a Candidate Ricin Toxin Subunit Vaccine journal October 2017
A 3D structural affinity model for multi-epitope in silico germinal center simulations posted_content February 2020
An overview of hydrogen deuterium exchange mass spectrometry (HDX-MS) in drug discovery journal August 2017
Identification of highly-protective combinations of Plasmodium vivax recombinant proteins for vaccine development journal September 2017
Antibody responses to Plasmodium vivax Duffy binding and Erythrocyte binding proteins predict risk of infection and are associated with protection from clinical Malaria journal February 2019
Getting in: The structural biology of malaria invasion journal September 2019
Estimation on local transmission of malaria by serological approach under low transmission setting in Myanmar journal January 2018
Structural patterns of selection and diversity for Plasmodium vivax antigens DBP and AMA1 journal May 2018
Identification and Characterization of Functional Human Monoclonal Antibodies to Plasmodium vivax Duffy-Binding Protein journal April 2019
The entropic force generated by intrinsically disordered segments tunes protein function journal November 2018
Mouse and Human Monoclonal Antibodies Protect against Infection by Multiple Genotypes of Japanese Encephalitis Virus journal March 2018
Naturally Acquired Antibody Response to Malaria Transmission Blocking Vaccine Candidate Pvs230 Domain 1 journal October 2019
Duffy Antigen Expression in Erythroid Bone Marrow Precursor Cells of Genotypically Duffy Negative Individuals posted_content December 2018
Rapid and iterative genome editing in the malaria parasite Plasmodium knowlesi provides new tools for P. vivax research journal June 2019
Antibodies to Cryptic Epitopes in Distant Homologues Underpin a Mechanism of Heterologous Immunity between Plasmodium vivax PvDBP and Plasmodium falciparum VAR2CSA journal October 2019
Development of Blood Stage Malaria Vaccines book January 2019
Tracking Higher Order Protein Structure by Hydrogen-Deuterium Exchange Mass Spectrometry journal February 2019