Evidence map›Paper›PMID 34721846›Full record

ArticleClinical & translational immunology2021

Endothelial cells are not productively infected by SARS-CoV-2.

Lilian Schimmel, Keng Yih Chew, Claudia J Stocks, Teodor E Yordanov, Patricia Essebier, Arutha Kulasinghe, James Monkman, Anna Flavia Ribeiro Dos Santos Miggiolaro, Caroline Cooper, Lucia de Noronha and 5 more

Open access · goldAbstract read
In one paragraph

Article in Clinical & translational immunology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 81 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
81citing papers in PubMed, 2 pooled it
8.1field-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

81 citing papers in PubMed, 2 syntheses or guidelines pooled it, 141 citations in OpenAlex.

  1. Pooled it
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  7. Extra gene coding capacity of SARS-CoV-2 provides a virus engineering platform for in vitro and in vivo applications.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  8. Article
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  10. SARS-CoV-2 uptake and inflammatory response in senescent endothelial cells are regulated by the BSG/VEGFR2 pathway.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
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  20. Interactions of SARS-CoV-2 with Human Target Cells-A Metabolic View.International journal of molecular sciences · 2024
    Review

21 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

15 authors at 3 institutions in 2 countries.

Lilian SchimmelInstitute for Molecular Bioscience, Division of Cell and Developmental Biology The University of Queensland Brisbane QLD Australia.ORCID https://orcid.org/0000-0002-0569-0464
Keng Yih ChewSchool of Chemistry and Molecular Biosciences The University of Queensland Brisbane QLD Australia.
Claudia J StocksInstitute for Molecular Bioscience, Division of Cell and Developmental Biology The University of Queensland Brisbane QLD Australia.
Teodor E YordanovInstitute for Molecular Bioscience, Division of Cell and Developmental Biology The University of Queensland Brisbane QLD Australia.ORCID https://orcid.org/0000-0003-4801-0673
Patricia EssebierInstitute for Molecular Bioscience, Division of Cell and Developmental Biology The University of Queensland Brisbane QLD Australia.
Arutha KulasingheThe University of Queensland Diamantina Institute The University of Queensland Brisbane QLD Australia.ORCID https://orcid.org/0000-0003-3224-7350
James MonkmanSchool of Biomedical Science, Faculty of Health Queensland University of Technology Brisbane QLD Australia.
Anna Flavia Ribeiro Dos Santos MiggiolaroPostgraduate Program of Health Sciences School of Medicine Hospital Marcelino Champagnat - Pontifícia Universidade Católica do Paraná (PUCPR) Curitiba Brazil.
Caroline CooperPathology Queensland Princess Alexandra Hospital Brisbane QLD Australia.
Lucia de NoronhaSchool of Medicine & Center of Education, Research and Innovation Hospital Marcelino Champagnat - Pontifícia Universidade Católica do Paraná (PUCPR) Curitiba Brazil.
Kate SchroderInstitute for Molecular Bioscience, Division of Cell and Developmental Biology The University of Queensland Brisbane QLD Australia.ORCID https://orcid.org/0000-0001-9261-3805
Anne Karine LagendijkInstitute for Molecular Bioscience, Division of Cell and Developmental Biology The University of Queensland Brisbane QLD Australia.ORCID https://orcid.org/0000-0003-1246-1608
Larisa I LabzinInstitute for Molecular Bioscience, Division of Cell and Developmental Biology The University of Queensland Brisbane QLD Australia.ORCID https://orcid.org/0000-0001-9098-4493
Kirsty R ShortSchool of Chemistry and Molecular Biosciences The University of Queensland Brisbane QLD Australia.ORCID https://orcid.org/0000-0003-4963-6184
Emma J GordonInstitute for Molecular Bioscience, Division of Cell and Developmental Biology The University of Queensland Brisbane QLD Australia.ORCID https://orcid.org/0000-0003-4723-4173
The University of Queensland · AUPontifícia Universidade Católica do Paraná · BRQueensland University of Technology · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesThrombotic and microvascular complications are frequently seen in deceased COVID-19 patients. However, whether this is caused by direct viral infection of the endothelium or inflammation-induced endothelial activation remains highly contentious.

methodsHere, we use patient autopsy samples, primary human endothelial cells and an

resultsWe show that primary human endothelial cells express very low levels of the SARS-CoV-2 receptor ACE2 and the protease TMPRSS2, which blocks their capacity for productive viral infection, and limits their capacity to produce infectious virus. Accordingly, endothelial cells can only be infected when they overexpress ACE2, or are exposed to very high concentrations of SARS-CoV-2. We also show that SARS-CoV-2 does not infect endothelial cells in 3D vessels under flow conditions. We further demonstrate that in a co-culture model endothelial cells are not infected with SARS-CoV-2. Endothelial cells do however sense and respond to infection in the adjacent epithelial cells, increasing ICAM-1 expression and releasing pro-inflammatory cytokines.

conclusionsTaken together, these data suggest that

Indexed as

blood vesselsCOVID‐19endothelial cellsinflammationSARS‐CoV‐2

Identifiers

PMID34721846
PMCPMC8542944
OpenAlexW3209317839

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.