Evidence map›Paper›PMID 34807265›Full record

ArticleClinical science (London, England : 1979)2021

The SARS-CoV-2 Spike protein disrupts human cardiac pericytes function through CD147 receptor-mediated signalling: a potential non-infective mechanism of COVID-19 microvascular disease.

Elisa Avolio, Michele Carrabba, Rachel Milligan, Maia Kavanagh Williamson, Antonio P Beltrami, Kapil Gupta, Karen T Elvers, Monica Gamez, Rebecca R Foster, Kathleen Gillespie and 7 more

Erratum issuedOpen access · hybridAbstract read
In one paragraph

Article in Clinical science (London, England : 1979), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 96 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
96citing papers in PubMed, 3 pooled it
10.9field-weighted citation impact, top 1% 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

96 citing papers in PubMed, 3 syntheses or guidelines pooled it, 145 citations in OpenAlex.

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  9. "Bridging the clinical, molecular and genetic perspectives on myocarditis in post-COVID-19 era".International journal of cardiology. Cardiovascular risk and prevention · 2026
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  13. Molecular mechanisms of SARS-CoV-2 entry: implications for biomedical strategies.Microbiology and molecular biology reviews : MMBR · 2025
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36 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

17 authors at 3 institutions in 3 countries.

Elisa AvolioBristol Medical School, Translational Health Sciences, University of Bristol, Bristol, U.K.ORCID 0000-0003-4801-8480
Michele CarrabbaBristol Medical School, Translational Health Sciences, University of Bristol, Bristol, U.K.
Rachel MilliganSchool of Cellular and Molecular Medicine, University of Bristol, Bristol, U.K.
Maia Kavanagh WilliamsonSchool of Cellular and Molecular Medicine, University of Bristol, Bristol, U.K.
Antonio P BeltramiDepartment of Pathology, University of Udine, Udine, Italy.
Kapil GuptaSchool of Biochemistry, University of Bristol, Bristol, U.K.
Karen T ElversMedicines Discovery Institute, Cardiff University, Cardiff, U.K.
Monica GamezBristol Medical School, Translational Health Sciences, University of Bristol, Bristol, U.K.
Rebecca R FosterBristol Medical School, Translational Health Sciences, University of Bristol, Bristol, U.K.
Kathleen GillespieBristol Medical School, Translational Health Sciences, University of Bristol, Bristol, U.K.
Fergus HamiltonBristol Medical School, Translational Health Sciences, University of Bristol, Bristol, U.K.
David ArnoldBristol Medical School, Translational Health Sciences, University of Bristol, Bristol, U.K.
Imre BergerSchool of Biochemistry, University of Bristol, Bristol, U.K.ORCID 0000-0001-7518-9045
Andrew D DavidsonSchool of Cellular and Molecular Medicine, University of Bristol, Bristol, U.K.
Darryl HillSchool of Cellular and Molecular Medicine, University of Bristol, Bristol, U.K.
Massimo CaputoBristol Medical School, Translational Health Sciences, University of Bristol, Bristol, U.K.
Paolo MadedduBristol Medical School, Translational Health Sciences, University of Bristol, Bristol, U.K.
University of Bristol · GBUniversity of Udine · ITUniversity of Wales Institute Cardiff · SG

Funding

British Heart Foundation CH/17/1/32804British Heart Foundation PG/15/33/31394British Heart Foundation PG/20/10285Medical Research Council MR/T031921/1
6 · The paper itself

Abstract

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes a broad range of clinical responses including prominent microvascular damage. The capacity of SARS-CoV-2 to infect vascular cells is still debated. Additionally, the SARS-CoV-2 Spike (S) protein may act as a ligand to induce non-infective cellular stress. We tested this hypothesis in pericytes (PCs), which are reportedly reduced in the heart of patients with severe coronavirus disease-2019 (COVID-19). Here we newly show that the in vitro exposure of primary human cardiac PCs to the SARS-CoV-2 wildtype strain or the α and δ variants caused rare infection events. Exposure to the recombinant S protein alone elicited signalling and functional alterations, including: (1) increased migration, (2) reduced ability to support endothelial cell (EC) network formation on Matrigel, (3) secretion of pro-inflammatory molecules typically involved in the cytokine storm, and (4) production of pro-apoptotic factors causing EC death. Next, adopting a blocking strategy against the S protein receptors angiotensin-converting enzyme 2 (ACE2) and CD147, we discovered that the S protein stimulates the phosphorylation/activation of the extracellular signal-regulated kinase 1/2 (ERK1/2) through the CD147 receptor, but not ACE2, in PCs. The neutralisation of CD147, either using a blocking antibody or mRNA silencing, reduced ERK1/2 activation, and rescued PC function in the presence of the S protein. Immunoreactive S protein was detected in the peripheral blood of infected patients. In conclusion, our findings suggest that the S protein may prompt PC dysfunction, potentially contributing to microvascular injury. This mechanism may have clinical and therapeutic implications.

Indexed as

AdolescentAdultAgedAged, 80 and overAngiotensin-Converting Enzyme 2BasiginCaco-2 CellsCell DeathChildChild, PreschoolCOVID-19CytokinesFemaleHost-Pathogen InteractionsHumansInfantACE2 protein, humanAngiotensin-Converting Enzyme 2BasiginBSG protein, humanCytokinesSpike Glycoprotein, Coronavirusspike protein, SARS-CoV-2angiotensin converting enzyme 2CD147COVID-19Microvascular diseasepericyteSpike protein

Identifiers

PMID34807265
PMCPMC8674568
OpenAlexW3185945882

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.