Evidence map›Paper›PMID 34909610›Full record

ArticleiScience2022

Functional evaluation of the P681H mutation on the proteolytic activation of the SARS-CoV-2 variant B.1.1.7 (Alpha) spike.

Bailey Lubinski, Maureen H V Fernandes, Laura Frazier, Tiffany Tang, Susan Daniel, Diego G Diel, Javier A Jaimes, Gary R Whittaker

Open access · goldAbstract read
In one paragraph

Article in iScience, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 151 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
151citing papers in PubMed, 2 pooled it
7.5field-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

151 citing papers in PubMed, 2 syntheses or guidelines pooled it, 126 citations in OpenAlex.

  1. Pooled it
  2. SARS-CoV-2 cell entry beyond the ACE2 receptor.Molecular biology reports · 2022
    Pooled it
  3. Article
  4. Review
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  11. Article
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  13. Article
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  15. Dynamic expedition of leading mutations in SARS-CoV-2 spike glycoproteins.Computational and structural biotechnology journal · 2024
    Article
  16. Article
  17. Dynamics of SARS-CoV-2 variants in West Africa: Insights into genomic surveillance in resource-constrained settings.Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases · 2024
    Review
  18. Article
  19. Review
  20. Review

91 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 1 institution in 1 country.

Bailey LubinskiDepartment of Microbiology & Immunology, College of Veterinary Medicine, Cornell University, 618 Tower Road, Ithaca, NY 14853, USA.
Maureen H V FernandesDepartment of Population Medicine, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA.
Laura FrazierDepartment of Microbiology & Immunology, College of Veterinary Medicine, Cornell University, 618 Tower Road, Ithaca, NY 14853, USA.
Tiffany TangRobert Frederick Smith School of Chemical & Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA.
Susan DanielRobert Frederick Smith School of Chemical & Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA.
Diego G DielDepartment of Population Medicine, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA.
Javier A JaimesDepartment of Microbiology & Immunology, College of Veterinary Medicine, Cornell University, 618 Tower Road, Ithaca, NY 14853, USA.
Gary R WhittakerDepartment of Microbiology & Immunology, College of Veterinary Medicine, Cornell University, 618 Tower Road, Ithaca, NY 14853, USA.
Cornell University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the agent causing the COVID-19 pandemic. SARS-CoV-2 B.1.1.7 (Alpha), a WHO variant of concern first identified in the United Kingdom in late 2020, contains several mutations including P681H in the spike S1/S2 cleavage site, which is predicted to increase cleavage by furin, potentially impacting the viral cell entry. Here, we studied the role of the P681H mutation in B.1.1.7 cell entry. We performed assays using fluorogenic peptides mimicking the Wuhan-Hu-1 and B.1.1.7 S1/S2 sequence and observed no significant difference in furin cleavage. Functional assays using pseudoparticles harboring SARS-CoV-2 spikes and cell-to-cell fusion assays demonstrated no differences between Wuhan-Hu-1, B.1.1.7, or a P681H point mutant. Likewise, we observed no differences in viral growth between USA-WA1/2020 and a B.1.1.7 isolate in cell culture. Our findings suggest that, although the B.1.1.7 P681H mutation may slightly increase S1/S2 cleavage, this does not significantly impact viral entry or cell-cell spread.

Indexed as

Virology

Identifiers

PMID34909610
PMCPMC8662955
OpenAlexW4200373171

What Socratic holds

Textmetadata
LicenceCC BY-NC-ND
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 Socratic graph.