Cited by 2,103Neutrophil, Myeloperoxidase and Oxidative MechanismsAntimicrobial Peptides and ActivitiesBlood disorders and treatments

Neutrophil elastase and myeloperoxidase regulate the formation of neutrophil extracellular traps

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Papayannopoulos, Venizelos, Metzler, Kathleen D., Hakkim, Abdul, Zychlinsky, Arturo·2010·Journal of Cell Biology

Abstract

Neutrophils release decondensed chromatin termed neutrophil extracellular traps (NETs) to trap and kill pathogens extracellularly. Reactive oxygen species are required to initiate NET formation but the downstream molecular mechanism is unknown. We show that upon activation, neutrophil elastase (NE) escapes from azurophilic granules and translocates to the nucleus, where it partially degrades specific histones, promoting chromatin decondensation. Subsequently, myeloperoxidase synergizes with NE in driving chromatin decondensation independent of its enzymatic activity. Accordingly, NE knockout mice do not form NETs in a pulmonary model of Klebsiella pneumoniae infection, which suggests that this defect may contribute to the immune deficiency of these mice. This mechanism provides for a novel function for serine proteases and highly charged granular proteins in the regulation of chromatin density, and reveals that the oxidative burst induces a selective release of granular proteins into the cytoplasm through an unknown mechanism.

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Authors
Papayannopoulos, V., Metzler, K. D., Hakkim, A., & Zychlinsky, A.
Affiliations
Max Planck Institute for Infection Biology (DE)
Corresponding author
Zychlinsky, Arturo
Venue
Journal of Cell Biology
Published
2010-10-25
Volume
191
Issue
3
Pages
677-691
ISSN
  • 0021-9525 (ISSN-L)
  • 1540-8140
OpenAlex
W2115959782
Cited by
2,103
References
74
Citations by year
2026: 166 · 2025: 204 · 2024: 177 · 2023: 186 · 2022: 181 · 2021: 204 · 2020: 151 · 2019: 139 · 2018: 139 · 2017: 121 · 2016: 120 · 2015: 83 · 2014: 81 · 2013: 61 · 2012: 63
FWCI
20.45
Type
journal article
Language
en
Open access
Licence
cc-by-nc-sa
Locations
  • The Journal of Cell Biology (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
  • Max Planck Institute for Plasma Physics (submittedVersion, cc-by-nc-sa)
Funders
Max-Planck-Gesellschaft
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Neutrophil, Myeloperoxidase and Oxidative Mechanisms
  • Life Sciences › Immunology and Microbiology › Microbiology › Antimicrobial Peptides and Activities
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Blood disorders and treatments
Keywords
neutrophil elastase, myeloperoxidase, neutrophil extracellular traps, chromatin decondensation, histone degradation, neutrophil respiratory burst, serine protease, azurophilic granules, Klebsiella pneumoniae infection, neutrophil-mediated immunity, immunodeficiency
MeSH terms
Animals, Disease Models, Animal, Extracellular Space, Humans, Klebsiella Infections, Klebsiella pneumoniae, Peroxidase, Neutrophils, Reference Values, Mice, Knockout, Leukocyte Elastase, Mice

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