Evidence map›Paper›PMID 34547822›Full record

ArticleEuropean journal of immunology2021

A surrogate cell-based SARS-CoV-2 spike blocking assay.

Wolfgang Schuh, Lena Baus, Tobit Steinmetz, Sebastian R Schulz, Leonie Weckwerth, Edith Roth, Manuela Hauke, Sara Krause, Patrick Morhart, Manfred Rauh and 6 more

Open access · hybridAbstract read
In one paragraph

Article in European journal of immunology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.3field-weighted citation impact, top 42% 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

3 citing papers in PubMed, 4 citations in OpenAlex.

  1. Article
  2. Article
  3. 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

16 authors at 3 institutions in 1 country.

Wolfgang SchuhDivision of Molecular Immunology, Department of Internal Medicine 3, Nikolaus-Fiebiger-Zentrum, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany.
Lena BausDivision of Molecular Immunology, Department of Internal Medicine 3, Nikolaus-Fiebiger-Zentrum, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany.
Tobit SteinmetzDivision of Molecular Immunology, Department of Internal Medicine 3, Nikolaus-Fiebiger-Zentrum, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany.
Sebastian R SchulzDivision of Molecular Immunology, Department of Internal Medicine 3, Nikolaus-Fiebiger-Zentrum, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany.
Leonie WeckwerthDivision of Molecular Immunology, Department of Internal Medicine 3, Nikolaus-Fiebiger-Zentrum, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany.
Edith RothDivision of Molecular Immunology, Department of Internal Medicine 3, Nikolaus-Fiebiger-Zentrum, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany.
Manuela HaukeDivision of Molecular Immunology, Department of Internal Medicine 3, Nikolaus-Fiebiger-Zentrum, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany.
Sara KrauseDivision of Molecular Immunology, Department of Internal Medicine 3, Nikolaus-Fiebiger-Zentrum, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany.
Patrick MorhartDivision of Molecular Pediatrics, Department of Pediatrics, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany.
Manfred RauhDivision of Molecular Pediatrics, Department of Pediatrics, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany.
Markus HoffmannInfection Biology Unit, German Primate Center-Leibniz Institute for Primate Research, Göttingen, Germany.
Niklas VesperInstitute of Biology III (Molecular Immunology), University of Freiburg, Freiburg, Germany.
Michael RethInstitute of Biology III (Molecular Immunology), University of Freiburg, Freiburg, Germany.
Holm SchneiderDivision of Molecular Pediatrics, Department of Pediatrics, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany.
Hans-Martin JäckDivision of Molecular Immunology, Department of Internal Medicine 3, Nikolaus-Fiebiger-Zentrum, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany.
Dirk MielenzDivision of Molecular Immunology, Department of Internal Medicine 3, Nikolaus-Fiebiger-Zentrum, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany.
Friedrich-Alexander-Universität Erlangen-Nürnberg · DEUniversity of Freiburg · DEGerman Primate Center · DE

Funding

BMBF 01KI2043ABMBF COVIMDeutsche Forschungsgemeinschaft TRR130/P02Deutsche Forschungsgemeinschaft TRR130/P03Deutsche Forschungsgemeinschaft TRR130/P09Deutsche Forschungsgemeinschaft TRR130/P28
6 · The paper itself

Abstract

To monitor infection by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and successful vaccination against coronavirus disease 2019 (COVID-19), the kinetics of neutralizing or blocking anti-SARS-CoV-2 antibody titers need to be assessed. Here, we report the development of a quick and inexpensive surrogate SARS-CoV-2 blocking assay (SUBA) using immobilized recombinant human angiotensin-converting enzyme 2 (hACE2) and human cells expressing the native form of surface SARS-CoV-2 spike protein. Spike protein-expressing cells bound to hACE2 in the absence or presence of blocking antibodies were quantified by measuring the optical density of cell-associated crystal violet in a spectrophotometer. The advantages are that SUBA is a fast and inexpensive assay, which does not require biosafety level 2- or 3-approved laboratories. Most importantly, SUBA detects blocking antibodies against the native trimeric cell-bound SARS-CoV-2 spike protein and can be rapidly adjusted to quickly pre-screen already approved therapeutic antibodies or sera from vaccinated individuals for their ACE2 blocking activities against any emerging SARS-CoV-2 variants.

Indexed as

Antibodies, BlockingAntibodies, NeutralizingAntibodies, ViralCOVID-19COVID-19 Serological TestingFlow CytometryHumansSARS-CoV-2Spike Glycoprotein, CoronavirusAntibodies, BlockingAntibodies, NeutralizingAntibodies, ViralSpike Glycoprotein, Coronavirusspike protein, SARS-CoV-2COVID-19hACE2SARS-CoV-2Spike proteinSurrogate blocking assay

Identifiers

PMID34547822
PMCPMC8646767
OpenAlexW3199860109

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.