Cited by 584Neutrophil, Myeloperoxidase and Oxidative MechanismsInflammation biomarkers and pathwaysAntimicrobial Peptides and Activities

Molecular mechanisms of NET formation and degradation revealed by intravital imaging in the liver vasculature

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Kolaczkowska, Elzbieta, Jenne, Craig N., Surewaard, Bas G. J., Thanabalasuriar, Ajitha, Lee, Woo-Yong, Sanz, Maria-Jesus, Mowen, Kerri, Opdenakker, Ghislain +1 more·2015·Nature Communications

Abstract

Neutrophil extracellular traps (NETs) composed of DNA decorated with histones and proteases trap and kill bacteria but also injure host tissue. Here we show that during a bloodstream infection with methicillin-resistant Staphylococcus aureus , the majority of bacteria are sequestered immediately by hepatic Kupffer cells, resulting in transient increases in liver enzymes, focal ischaemic areas and a robust neutrophil infiltration into the liver. The neutrophils release NETs into the liver vasculature, which remain anchored to the vascular wall via von Willebrand factor and reveal significant neutrophil elastase (NE) proteolytic activity. Importantly, DNase although very effective at DNA removal, and somewhat effective at inhibiting NE proteolytic activity, fails to remove the majority of histones from the vessel wall and only partly reduces injury. By contrast, inhibition of NET production as modelled by PAD4-deficiency, or prevention of NET formation and proteolytic activity as modelled in NE −/− mice prevent collateral host tissue damage.

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Authors
Kolaczkowska, E., Jenne, C. N., Surewaard, B. G. J., Thanabalasuriar, A., Lee, W.-Y., Sanz, M.-J., Mowen, K., Opdenakker, G., & Kubes, P.
Affiliations
  • University of Calgary (CA)
  • Scripps Research Institute (US)
  • Rega Institute for Medical Research (BE)
Corresponding author
Kubes, Paul
Venue
Nature Communications
Published
2015-03-26
Volume
6
Issue
1
Pages
6673-6673
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2034808365
Cited by
584
References
63
Citations by year
2026: 38 · 2025: 53 · 2024: 55 · 2023: 57 · 2022: 61 · 2021: 67 · 2020: 63 · 2019: 58 · 2018: 50 · 2017: 39 · 2016: 38 · 2015: 5
FWCI
21.70
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Homo Politicus (Academy of Humanities and Economics in Lodz) (submittedVersion, cc-by-nc-nd)
  • Lirias (KU Leuven) (submittedVersion, cc-by)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
  • Alberta Innovates - Health Solutions
  • European Commission (273340, 627575)
  • Canada Research Chairs
  • Alberta Innovates
  • Canadian Institutes of Health Research
  • FP7 People: Marie-Curie Actions (FP7-PEOPLE-2013, FP7-PEOPLE-2013-IOF)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Neutrophil, Myeloperoxidase and Oxidative Mechanisms
  • Life Sciences › Immunology and Microbiology › Immunology › Inflammation biomarkers and pathways
  • Life Sciences › Immunology and Microbiology › Microbiology › Antimicrobial Peptides and Activities
Keywords
neutrophil extracellular traps, NET degradation, methicillin-resistant Staphylococcus aureus, bloodstream infection, Kupffer cells, liver vasculature, neutrophil elastase, DNase, histone removal, von Willebrand factor, PAD4, neutrophil infiltration, hepatic ischemia, host tissue damage, intravital imaging
MeSH terms
Protein-Arginine Deiminase Type 4, Animals, Deoxyribonucleases, Hepatic Artery, Hepatic Veins, Histones, Hydrolases, Kupffer Cells, Liver, Male, Staphylococcal Infections, von Willebrand Factor, Bacteremia, Mice, Knockout, Leukocyte Elastase, Neutrophil Infiltration, Mice, Methicillin-Resistant Staphylococcus aureus, Extracellular Traps

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