Evidence map›Paper›PMID 32788194›Full record

ArticleJournal of virology2020

Optimized Pseudotyping Conditions for the SARS-COV-2 Spike Glycoprotein.

Marc C Johnson, Terri D Lyddon, Reinier Suarez, Braxton Salcedo, Mary LePique, Maddie Graham, Clifton Ricana, Carolyn Robinson, Detlef G Ritter

Open access · greenAbstract read
In one paragraph

Article in Journal of virology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 89 papers.

0numbers the graph read from it
0cells of the map it votes in
89citing papers in PubMed
3.2field-weighted citation impact, top 5% 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

89 citing papers in PubMed, 149 citations in OpenAlex.

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  20. Antiviral Effects of Secondary Metabolites fromPlants (Basel, Switzerland) · 2023
    Article

29 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 2 institutions in 1 country.

Marc C JohnsonDepartment of Molecular Microbiology and Immunology, University of Missouri School of Medicine, Christopher S. Bond Life Sciences Center, Columbia, Missouri, USA marcjohnson@missouri.edu.ORCID 0000-0002-6431-7133
Terri D LyddonDepartment of Molecular Microbiology and Immunology, University of Missouri School of Medicine, Christopher S. Bond Life Sciences Center, Columbia, Missouri, USA.
Reinier SuarezDepartment of Molecular Microbiology and Immunology, University of Missouri School of Medicine, Christopher S. Bond Life Sciences Center, Columbia, Missouri, USA.
Braxton SalcedoDepartment of Molecular Microbiology and Immunology, University of Missouri School of Medicine, Christopher S. Bond Life Sciences Center, Columbia, Missouri, USA.
Mary LePiqueDepartment of Molecular Microbiology and Immunology, University of Missouri School of Medicine, Christopher S. Bond Life Sciences Center, Columbia, Missouri, USA.
Maddie GrahamDepartment of Molecular Microbiology and Immunology, University of Missouri School of Medicine, Christopher S. Bond Life Sciences Center, Columbia, Missouri, USA.
Clifton RicanaDepartment of Molecular Microbiology and Immunology, University of Missouri School of Medicine, Christopher S. Bond Life Sciences Center, Columbia, Missouri, USA.ORCID 0000-0002-9733-9136
Carolyn RobinsonDepartment of Molecular Microbiology and Immunology, University of Missouri School of Medicine, Christopher S. Bond Life Sciences Center, Columbia, Missouri, USA.
Detlef G RitterDepartment of Anatomical and Clinical Pathology, MU Health Care, Columbia, Missouri, USA.
University of Missouri · USUniversity of Missouri Health System · US

Funding

Examining the role of IP6 in HIV-1 replicationR21AI143363 · NIAID · UNIVERSITY OF MISSOURI-COLUMBIA · PI JOHNSON, MARC C · 2019 to 2020
$418k
NIAID NIH HHS R21 AI143363
6 · The paper itself

Abstract

The severe acute respiratory syndrome coronavirus 2 (SARS-COV-2) Spike glycoprotein is solely responsible for binding to the host cell receptor and facilitating fusion between the viral and host membranes. The ability to generate viral particles pseudotyped with SARS-COV-2 Spike is useful for many types of studies, such as characterization of neutralizing antibodies or development of fusion-inhibiting small molecules. Here, we characterized the use of a codon-optimized SARS-COV-2 Spike glycoprotein for the generation of pseudotyped HIV-1, murine leukemia virus (MLV), and vesicular stomatitis virus (VSV) particles. The full-length Spike protein functioned inefficiently with all three systems but was enhanced over 10-fold by deleting the last 19 amino acids of the cytoplasmic tail. Infection of 293FT target cells was possible only if the cells were engineered to stably express the human angiotensin-converting enzyme 2 (ACE2) receptor, but stably introducing an additional copy of this receptor did not further enhance susceptibility. Stable introduction of the Spike-activating protease TMPRSS2 further enhanced susceptibility to infection by 5- to 10-fold. Replacement of the signal peptide of the Spike protein with an optimal signal peptide did not enhance or reduce infectious particle production. However, modifications D614G and R682Q further enhanced infectious particle production. With all enhancing elements combined, the titer of pseudotyped HIV-1 particles reached almost 10

Indexed as

Angiotensin-Converting Enzyme 2Antibodies, NeutralizingAntibodies, ViralBetacoronavirusCoronavirus InfectionsCOVID-19HEK293 CellsHIV-1HumansLeukemia Virus, MurinePandemicsPeptidyl-Dipeptidase APneumonia, ViralSARS-CoV-2Serine EndopeptidasesSpike Glycoprotein, CoronavirusACE2 protein, humanAngiotensin-Converting Enzyme 2Antibodies, NeutralizingAntibodies, ViralPeptidyl-Dipeptidase ASerine EndopeptidasesSpike Glycoprotein, Coronavirusspike protein, SARS-CoV-2TMPRSS2 protein, humanCOVID-19glycoproteinlentiviral vectorneutralization assaypseudotypesSARS-COV-2

Identifiers

PMID32788194
PMCPMC7565639
OpenAlexW3048571801

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.