Evidence map›Paper›PMID 20194590›Full record

ArticleInfection and immunity2010

Immunization with VAR2CSA-DBL5 recombinant protein elicits broadly cross-reactive antibodies to placental Plasmodium falciparum-infected erythrocytes.

Marion Avril, Megan M Cartwright, Marianne J Hathaway, Mirja Hommel, Salenna R Elliott, Kathryn Williamson, David L Narum, Patrick E Duffy, Michal Fried, James G Beeson and 1 more

Abstract read
In one paragraph

Article in Infection and immunity, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed.

  1. Article
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  4. Severe malaria: what's new on the pathogenesis front?International journal for parasitology · 2017
    Review
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  16. Vaccines for malaria: how close are we?Annual review of medicine · 2012
    Review
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors.

Marion AvrilSeattle Biomedical Research Institute, 307 Westlake Ave. N, Suite 500, Seattle, WA 98109-5219, USA.
Megan M Cartwright
Marianne J Hathaway
Mirja Hommel
Salenna R Elliott
Kathryn Williamson
David L Narum
Patrick E Duffy
Michal Fried
James G Beeson
Joseph D Smith

Funding

Malaria Pathogenesis in young children and vaccine discoveryZIAAI001134 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI DUFFY, PATRICK · 2010 to 2025
$11.3M
Intramural NIH HHS
6 · The paper itself

Abstract

Pregnancy-associated malaria is a severe clinical syndrome associated with the sequestration of Plasmodium falciparum-infected erythrocytes in the placenta. Placental binding is mediated by VAR2CSA, a member of the large and diverse P. falciparum erythrocyte membrane 1 (PfEMP1) protein family. To better understand if conserved regions in VAR2CSA can be targeted by antibodies, we immunized rabbits with VAR2CSA-DBL1 and -DBL5 recombinant proteins produced in Pichia pastoris and developed a panel of seven chondroitin sulfate A (CSA)-binding parasites from diverse geographic origins. Overall, no two parasites in the panel expressed the same VAR2CSA sequence. The DBL1 domains averaged 80% amino acid identity (range, 72 to 89%), and the DBL5 domains averaged 86% amino acid identity (range, 83 to 99%), similar to a broader sampling of VAR2CSA sequences from around the world. Whereas antibodies generated against the VAR2CSA-DBL1 recombinant protein had only limited breadth and reacted with three or four parasites in the panel, immunization with DBL5 recombinant proteins elicited broadly cross-reactive antibodies against all or most parasites in the panel, as well as to fresh clinical isolates from pregnant women. These findings demonstrate that the major PfEMP1 variant expressed by placental isolates exposes strain-transcendent epitopes that can be targeted by vaccination and may have application for pregnancy malaria vaccine development.

Indexed as

AdultAnimalsAntigens, ProtozoanCluster AnalysisErythrocytesFemaleHumansMalaria, FalciparumMalaria VaccinesMalePichiaPlacentaPlasmodium falciparumPregnancyRabbitsSequence Homology, Amino AcidAntigens, ProtozoanMalaria VaccinesVaccines, SyntheticVAR2CSA protein, Plasmodium falciparum

Identifiers

PMID20194590
PMCPMC2863527

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.