Evidence map›Paper›PMID 20585558›Full record

ArticlePLoS pathogens2010

Complement receptor 1 is a sialic acid-independent erythrocyte receptor of Plasmodium falciparum.

Carmenza Spadafora, Gordon A Awandare, Karen M Kopydlowski, Jozsef Czege, J Kathleen Moch, Robert W Finberg, George C Tsokos, José A Stoute

Open access · goldAbstract read
In one paragraph

Article in PLoS pathogens, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 59 papers.

0numbers the graph read from it
0cells of the map it votes in
59citing papers in PubMed
9.4field-weighted citation impact, top 2% of its field
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

59 citing papers in PubMed, 97 citations in OpenAlex.

  1. Article
  2. Article
  3. Cells · 2024
    Review
  4. Complement receptor 1 is the human erythrocyte receptor forProceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  5. Microwaves can kill malaria parasites non-thermally.Frontiers in cellular and infection microbiology · 2023
    Article
  6. Review
  7. Review
  8. Phenotypic characterization of GhanaianFrontiers in immunology · 2022
    Article
  9. Article
  10. Article
  11. Review
  12. Antiplasmodial activity ofJournal of parasitic diseases : official organ of the Indian Society for Parasitology · 2020
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review
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

8 authors at 5 institutions in 2 countries.

Carmenza SpadaforaDepartment of Medicine, the Uniformed Services University of the Health Sciences, Bethesda, Maryland, United States of America.
Gordon A Awandare
Karen M Kopydlowski
Jozsef Czege
J Kathleen Moch
Robert W Finberg
George C Tsokos
José A Stoute
Walter Reed Army Institute of Research · USCity of Knowledge · PAPennsylvania State University · USUniformed Services University of the Health Sciences · USUniversity of Massachusetts Chan Medical School · US

Funding

Role of Immune Complex in Severe Malarial AnemiaR01HL071502 · NHLBI · HENRY M. JACKSON FDN FOR THE ADV MIL/MED · PI STOUTE, JOSE ANTONIO · 2002 to 2005
$1.1M
Pediatric malaria research fellowship training programD43TW006239 · FIC · WALTER REED ARMY INSTITUTE OF RESEARCH · PI STOUTE, JOSE ANTONIO · 2003 to 2006
$398k
FIC NIH HHS D43 TW006239FIC NIH HHS D43 TW06239NHLBI NIH HHS HL 71502NHLBI NIH HHS R01 HL071502
6 · The paper itself

Abstract

Plasmodium falciparum is a highly lethal malaria parasite of humans. A major portion of its life cycle is dedicated to invading and multiplying inside erythrocytes. The molecular mechanisms of erythrocyte invasion are incompletely understood. P. falciparum depends heavily on sialic acid present on glycophorins to invade erythrocytes. However, a significant proportion of laboratory and field isolates are also able to invade erythrocytes in a sialic acid-independent manner. The identity of the erythrocyte sialic acid-independent receptor has been a mystery for decades. We report here that the complement receptor 1 (CR1) is a sialic acid-independent receptor for the invasion of erythrocytes by P. falciparum. We show that soluble CR1 (sCR1) as well as polyclonal and monoclonal antibodies against CR1 inhibit sialic acid-independent invasion in a variety of laboratory strains and wild isolates, and that merozoites interact directly with CR1 on the erythrocyte surface and with sCR1-coated microspheres. Also, the invasion of neuraminidase-treated erythrocytes correlates with the level of CR1 expression. Finally, both sialic acid-independent and dependent strains invade CR1 transgenic mouse erythrocytes preferentially over wild-type erythrocytes but invasion by the latter is more sensitive to neuraminidase. These results suggest that both sialic acid-dependent and independent strains interact with CR1 in the normal red cell during the invasion process. However, only sialic acid-independent strains can do so without the presence of glycophorin sialic acid. Our results close a longstanding and important gap in the understanding of the mechanism of erythrocyte invasion by P. falciparum that will eventually make possible the development of an effective blood stage vaccine.

Indexed as

AnimalsBlotting, WesternErythrocytesFlow CytometryFluorescent Antibody TechniqueHumansImmunoprecipitationMalaria, FalciparumMembrane GlycoproteinsMerozoitesMiceMice, Inbred C57BLMice, TransgenicN-Acetylneuraminic AcidPlasmodium falciparumReceptors, ComplementMembrane GlycoproteinsN-Acetylneuraminic AcidReceptors, ComplementReceptors, ImmunologicSialic Acid Binding Ig-like Lectin 1SIGLEC1 protein, humanSiglec1 protein, mouse

Identifiers

PMID20585558
PMCPMC2887475
OpenAlexW2122647378

What OpenQuestion holds

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Registered trials

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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.