Evidence map›Paper›PMID 19692477›Full record

ArticleJournal of virology2009

Broad neutralization of human immunodeficiency virus type 1 mediated by plasma antibodies against the gp41 membrane proximal external region.

Elin S Gray, Maphuti C Madiga, Penny L Moore, Koleka Mlisana, Salim S Abdool Karim, James M Binley, George M Shaw, John R Mascola, Lynn Morris

Open access · greenAbstract read
In one paragraph

Article in Journal of virology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 78 papers.

0numbers the graph read from it
0cells of the map it votes in
78citing papers in PubMed
4.8field-weighted citation impact, top 4% 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

78 citing papers in PubMed, 101 citations in OpenAlex.

  1. Trial
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  4. Under the Radar: Immune Evasion, Pathogenesis and Control of HIV Infection.International journal of molecular sciences · 2025
    Review
  5. Activation of CXCR3Journal of virology · 2025
    Article
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18 more citing papers are in PubMed but not listed here.

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

9 authors at 5 institutions in 2 countries.

Elin S GrayAIDS Virus Research Unit, National Institute for Communicable Diseases, Johannesburg, South Africa.
Maphuti C Madiga
Penny L Moore
Koleka Mlisana
Salim S Abdool Karim
James M Binley
George M Shaw
John R Mascola
Lynn Morris
National Institute for Communicable DiseasesCentre for the AIDS Programme of Research in South Africa · ZANational Institutes of Health · USTorrey Pines Institute For Molecular Studies · USUniversity of Alabama at Birmingham · US

Funding

The Viral Set Point in HIV-1 Subtype C InfectionU19AI051794 · NIAID · UNIVERSITY OF KWAZULU-NATAL · PI ABDOOL KARIM, SALIM S · 2002 to 2007
$22.5M
TUBERCULOSIS SUPPLEMENTD43TW000231 · FIC · COLUMBIA UNIV NEW YORK MORNINGSIDE · PI ABDOOL KARIM, QUARRAISHA · 1993 to 2014
$13.1M
Pure and Authentic HIV-1 Env ImmunogensR01AI093278 · NIAID · TORREY PINES INST FOR MOLECULAR STUDIES · PI BINLEY, JAMES M · 2011 to 2024
$11.6M
FIC NIH HHS D43 TW000231FIC NIH HHS D43TW00231NIAID NIH HHS AI51794NIAID NIH HHS R01 AI093278NIAID NIH HHS U19 AI051794Wellcome Trust 089933
6 · The paper itself

Abstract

We identified three cross-neutralizing plasma samples with high-titer anti-membrane proximal external region (MPER) peptide binding antibodies from among 156 chronically human immunodeficiency virus type 1-infected individuals. In order to establish if these antibodies were directly responsible for the observed neutralization breadth, we used MPER-coated magnetic beads to deplete plasmas of these specific antibodies. Depletion of anti-MPER antibodies from BB34, CAP206, and SAC21 resulted in 77%, 68%, and 46% decreases, respectively, in the number of viruses neutralized. Antibodies eluted from the beads showed neutralization profiles similar to those of the original plasmas, with potencies comparable to those of the known anti-MPER monoclonal antibodies (MAbs), 4E10, 2F5, and Z13e1. The anti-MPER neutralizing antibodies in BB34 were present in the immunoglobulin G3 subclass-enriched fraction. Alanine scanning of the MPER showed that the antibodies from these three plasmas had specificities distinct from those of the known MAbs, requiring one to three crucial residues at positions 670, 673, and 674. These data demonstrate the existence of MPER-specific cross-neutralizing antibodies in plasma, although the ability to elicit such potent antiviral antibodies during natural infection appears to be rare. Nevertheless, the identification of three novel antibody specificities within the MPER supports its further study as a promising target for vaccine design.

Indexed as

AntibodiesAdsorptionAmino Acid SequenceEpitope MappingHIV-1HIV Envelope Protein gp41HumansImmunomagnetic SeparationMolecular Sequence DataNeutralization TestsProtein Structure, TertiaryAntibodiesHIV Envelope Protein gp41

Identifiers

PMID19692477
PMCPMC2772769
OpenAlexW2109229894

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.