Evidence map›Paper›PMID 35548920›Full record

ArticleEMBO reports2022

Potent neutralization by monoclonal human IgM against SARS-CoV-2 is impaired by class switch.

Ilaria Callegari, Mika Schneider, Giuliano Berloffa, Tobias Mühlethaler, Sebastian Holdermann, Edoardo Galli, Tim Roloff, Renate Boss, Laura Infanti, Nina Khanna and 5 more

Open access · hybridAbstract read
In one paragraph

Article in EMBO reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.6field-weighted citation impact, top 15% 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

11 citing papers in PubMed, 18 citations in OpenAlex.

  1. Article
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  6. Defining and Studying B Cell Receptor and TCR Interactions.Journal of immunology (Baltimore, Md. : 1950) · 2023
    Article
  7. Review
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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

15 authors at 5 institutions in 3 countries.

Ilaria CallegariDepartment of Biomedicine, University of Basel and University Hospital Basel, Basel, Switzerland.ORCID 0000-0003-3361-3084
Mika SchneiderDepartment of Biomedicine, University of Basel and University Hospital Basel, Basel, Switzerland.
Giuliano BerloffaDepartment of Biomedicine, University of Basel and University Hospital Basel, Basel, Switzerland.ORCID 0000-0003-3152-9858
Tobias MühlethalerBiophysics Facility, Biozentrum, University of Basel, Basel, Switzerland.
Sebastian HoldermannDepartment of Biomedicine, University of Basel and University Hospital Basel, Basel, Switzerland.ORCID 0000-0003-0778-0030
Edoardo GalliDepartment of Biomedicine, University of Basel and University Hospital Basel, Basel, Switzerland.ORCID 0000-0002-9760-2643
Tim RoloffApplied Microbiology Research, Department of Biomedicine, University of Basel, Basel, Switzerland.
Renate BossFederal Food Safety and Veterinary Office, Bern, Switzerland.
Laura InfantiRegional Blood Transfusion Service, Swiss Red Cross, Basel, Switzerland.
Nina KhannaInfectious Diseases and Hospital Epidemiology, University Hospital Basel, Basel, Switzerland.
Adrian EgliApplied Microbiology Research, Department of Biomedicine, University of Basel, Basel, Switzerland.ORCID 0000-0002-3564-8603
Andreas BuserRegional Blood Transfusion Service, Swiss Red Cross, Basel, Switzerland.ORCID 0000-0002-7942-6746
Gert Zimmer *Institute of Virology and Immunology, Bern & Mittelhäusern, Switzerland.ORCID 0000-0002-2708-2507
Tobias Derfuss *Department of Biomedicine, University of Basel and University Hospital Basel, Basel, Switzerland.
Nicholas S R Sanderson *Department of Biomedicine, University of Basel and University Hospital Basel, Basel, Switzerland.ORCID 0000-0003-1711-7275
University of Basel · CHSwiss Red Cross · CHFederal Food Safety and Veterinary Office · CHUniversity Hospital of Basel · CHUniversity of Bern · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

To investigate the class-dependent properties of anti-viral IgM antibodies, we use membrane antigen capture activated cell sorting to isolate spike-protein-specific B cells from donors recently infected with SARS-CoV-2, allowing production of recombinant antibodies. We isolate 20, spike-protein-specific antibodies of classes IgM, IgG, and IgA, none of which shows any antigen-independent binding to human cells. Two antibodies of class IgM mediate virus neutralization at picomolar concentrations, but this potency is lost following artificial switch to IgG. Although, as expected, the IgG versions of the antibodies appear to have lower avidity than their IgM parents, this is not sufficient to explain the loss of potency.

Indexed as

COVID-19SARS-CoV-2Antibodies, MonoclonalAntibodies, ViralHumansImmunoglobulin GImmunoglobulin MAntibodies, MonoclonalAntibodies, ViralImmunoglobulin GImmunoglobulin MantibodiesB cellsclass switchMACACSmembrane antigen

Identifiers

PMID35548920
PMCPMC9253785
OpenAlexW4280501758

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.