Evidence map›Paper›PMID 34531417›Full record

ArticleScientific reports2021

A bioluminescent and homogeneous SARS-CoV-2 spike RBD and hACE2 interaction assay for antiviral screening and monitoring patient neutralizing antibody levels.

Juliano Alves, Laurie Engel, Renata de Vasconcelos Cabral, Eduardo L Rodrigues, Liane de Jesus Ribeiro, Luiza M Higa, Orlando da Costa Ferreira Júnior, Terezinha Marta P P Castiñeiras, Isabela de Carvalho Leitão, Amilcar Tanuri and 2 more

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
0.8field-weighted citation impact, top 25% 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

18 citing papers in PubMed, 18 citations in OpenAlex.

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  13. Anti-SARS-CoV-2 Activity ofMolecules (Basel, Switzerland) · 2023
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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

12 authors at 2 institutions in 2 countries.

Juliano AlvesR&D Department, Promega Corporation, Madison, WI, USA. juliano.alves@promega.com.
Laurie EngelR&D Department, Promega Corporation, Madison, WI, USA.
Renata de Vasconcelos CabralLaboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, Brazil.
Eduardo L RodriguesPromega Biotecnologia Do Brasil, São Paulo, Brazil.
Liane de Jesus RibeiroLaboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, Brazil.
Luiza M HigaLaboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, Brazil.
Orlando da Costa Ferreira JúniorLaboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, Brazil.
Terezinha Marta P P CastiñeirasDepartamento de Doenças Infecciosas E Parasitárias, Faculdade de Medicina, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, Brazil.
Isabela de Carvalho LeitãoInstituto de Biofísica Carlos Chagas Filho, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, Brazil.
Amilcar TanuriLaboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, Brazil.
Said A GoueliR&D Department, Promega Corporation, Madison, WI, USA.
Hicham ZegzoutiR&D Department, Promega Corporation, Madison, WI, USA. hicham.zegzouti@promega.com.
Universidade Federal do Rio de Janeiro · BRPromega (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Here we describe a homogeneous bioluminescent immunoassay based on the interaction between Fc-tagged SARS-CoV-2 Spike RBD and human ACE2, and its detection by secondary antibodies labeled with NanoLuc luciferase fragments LgBit and SmBit. The assay utility for the discovery of novel inhibitors was demonstrated with a panel of anti-RBD antibodies, ACE2-derived miniproteins and soluble ACE2. Studying the effect of RBD mutations on ACE2 binding showed that the N501Y mutation increased RBD apparent affinity toward ACE2 tenfold that resulted in escaping inhibition by some anti-RBD antibodies. In contrast, while E484K mutation did not highly change the binding affinity, it still escaped antibody inhibition likely due to changes in the epitope recognized by the antibody. Also, neutralizing antibodies (NAbs) from COVID-19 positive samples from two distinct regions (USA and Brazil) were successfully detected and the results further suggest the persistence of NAbs for at least 6 months post symptom onset. Finally, sera from vaccinated individuals were tested for NAbs and showed varying neutralizing activity after first and second doses, suggesting the assay can be used to assess immunity of vaccinated populations. Our results demonstrate the broad utility and ease of use of this methodology both for drug discovery and clinical research applications.

Indexed as

Angiotensin-Converting Enzyme 2Antibodies, NeutralizingAntibodies, ViralBrazilCOVID-19HumansLuciferasesLuminescent MeasurementsMutationProtein BindingProtein DomainsSARS-CoV-2Spike Glycoprotein, CoronavirusUnited StatesVaccinationACE2 protein, humanAngiotensin-Converting Enzyme 2Antibodies, NeutralizingAntibodies, ViralLuciferasesnanolucSpike Glycoprotein, Coronavirus

Identifiers

PMID34531417
PMCPMC8445915
OpenAlexW3201236410

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.