Differential Effect of SARS-CoV-2 Spike Glycoprotein 1 on Human Bronchial and Alveolar Lung Mucosa Models: Implications for Pathogenicity.
Angiotensin-Converting Enzyme 2
/ metabolism
Bronchi
/ metabolism
Cytokines
/ metabolism
Gene Expression Profiling
Humans
Lung
/ metabolism
Models, Biological
Protein Interaction Domains and Motifs
Recombinant Proteins
/ chemistry
Respiratory Mucosa
/ metabolism
SARS-CoV-2
/ metabolism
Spike Glycoprotein, Coronavirus
/ chemistry
Toll-Like Receptor 2
/ metabolism
Toll-Like Receptor 4
/ metabolism
COVID-19
MERS (middle east respiratory syndrome)
SARS (severe acute respiratory syndrome)
SARS-CoV-2
coronavirus
fibrosis
lung
pulmonary
spike protein
Journal
Viruses
ISSN: 1999-4915
Titre abrégé: Viruses
Pays: Switzerland
ID NLM: 101509722
Informations de publication
Date de publication:
17 12 2021
17 12 2021
Historique:
received:
12
10
2021
revised:
10
12
2021
accepted:
11
12
2021
entrez:
28
12
2021
pubmed:
29
12
2021
medline:
7
1
2022
Statut:
epublish
Résumé
The SARS-CoV-2 spike protein mediates attachment of the virus to the host cell receptor and fusion between the virus and the cell membrane. The S1 subunit of the spike glycoprotein (S1 protein) contains the angiotensin converting enzyme 2 (ACE2) receptor binding domain. The SARS-CoV-2 variants of concern contain mutations in the S1 subunit. The spike protein is the primary target of neutralizing antibodies generated following infection, and constitutes the viral component of mRNA-based COVID-19 vaccines. Therefore, in this work we assessed the effect of exposure (24 h) to 10 nM SARS-CoV-2 recombinant S1 protein on physiologically relevant human bronchial (bro) and alveolar (alv) lung mucosa models cultured at air-liquid interface (ALI) ( Exposure to S1 protein induced the surface expression of ACE2, toll like receptor (TLR) 2, and TLR4 in both bro-ALI and alv-ALI models. Transcript expression analysis identified 117 (bro-ALI) and 97 (alv-ALI) differentially regulated genes ( In conclusion, we observed a typical anti-viral response in the bronchial model and a pro-fibrotic response in the alveolar model. The bro-ALI and alv-ALI models may serve as an easy and robust platform for assessing the pathogenicity of SARS-CoV-2 variants of concern at different lung regions.
Sections du résumé
BACKGROUND
The SARS-CoV-2 spike protein mediates attachment of the virus to the host cell receptor and fusion between the virus and the cell membrane. The S1 subunit of the spike glycoprotein (S1 protein) contains the angiotensin converting enzyme 2 (ACE2) receptor binding domain. The SARS-CoV-2 variants of concern contain mutations in the S1 subunit. The spike protein is the primary target of neutralizing antibodies generated following infection, and constitutes the viral component of mRNA-based COVID-19 vaccines.
METHODS
Therefore, in this work we assessed the effect of exposure (24 h) to 10 nM SARS-CoV-2 recombinant S1 protein on physiologically relevant human bronchial (bro) and alveolar (alv) lung mucosa models cultured at air-liquid interface (ALI) (
RESULTS
Exposure to S1 protein induced the surface expression of ACE2, toll like receptor (TLR) 2, and TLR4 in both bro-ALI and alv-ALI models. Transcript expression analysis identified 117 (bro-ALI) and 97 (alv-ALI) differentially regulated genes (
CONCLUSIONS
In conclusion, we observed a typical anti-viral response in the bronchial model and a pro-fibrotic response in the alveolar model. The bro-ALI and alv-ALI models may serve as an easy and robust platform for assessing the pathogenicity of SARS-CoV-2 variants of concern at different lung regions.
Identifiants
pubmed: 34960806
pii: v13122537
doi: 10.3390/v13122537
pmc: PMC8708014
pii:
doi:
Substances chimiques
Cytokines
0
Recombinant Proteins
0
Spike Glycoprotein, Coronavirus
0
TLR2 protein, human
0
TLR4 protein, human
0
Toll-Like Receptor 2
0
Toll-Like Receptor 4
0
spike protein, SARS-CoV-2
0
ACE2 protein, human
EC 3.4.17.23
Angiotensin-Converting Enzyme 2
EC 3.4.17.23
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : Swedish Research Council
ID : LP: 2018-03233
Organisme : IMM strategic grant
ID : SU-COVID (2020-2021)
Organisme : Swedish Heart Lung Foundation
ID : (KG: 20200776)
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