Cited by 638Phagocytosis and Immune RegulationFatty Acid Research and HealthEicosanoids and Hypertension Pharmacology

Cutting Edge: Lipoxins Rapidly Stimulate Nonphlogistic Phagocytosis of Apoptotic Neutrophils by Monocyte-Derived Macrophages

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Godson, Catherine, Mitchell, Siobhan, Harvey, Killeen, Petasis, Nicos A, Hogg, Nancy, Brady, Hugh R·2000·The Journal of Immunology

Abstract

Lipoxins (LX) are lipoxygenase-derived eicosanoids generated during inflammation. LX inhibit polymorphonuclear neutrophil (PMN) chemotaxis and adhesion and are putative braking signals for PMN-mediated tissue injury. In this study, we report that LXA4 promotes another important step in the resolution phase of inflammation, namely, phagocytosis of apoptotic PMN by monocyte-derived macrophages (Mφ). LXA4 triggered rapid, concentration-dependent uptake of apoptotic PMN. This bioactivity was shared by stable synthetic LXA4 analogues (picomolar concentrations) but not by other eicosanoids tested. LXA4-triggered phagocytosis did not provoke IL-8 or monocyte chemoattractant protein-1 release. LXA4-induced phagocytosis was attenuated by anti-CD36, αvβ3, and CD18 mAbs. LXA4-triggered PMN uptake was inhibited by pertussis toxin and by 8-bromo-cAMP and was mimicked by Rp-cAMP, a protein kinase A inhibitor. LXA4 attenuated PGE2-stimulated protein kinase A activation in Mφ. These results suggest that LXA4 is an endogenous stimulus for PMN clearance during inflammation and provide a novel rationale for using stable synthetic analogues as anti-inflammatory compounds in vivo.

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Authors
Godson, C., Mitchell, S., Harvey, K., Petasis, N. A., Hogg, N., & Brady, H. R.
Affiliations
  • University College Dublin (IE)
  • University of Southern California (US)
  • Imperial Cancer Research Fund , London ,
Venue
The Journal of Immunology
Published
2000-02
Volume
164
Issue
4
Pages
1663-1667
ISSN
  • 0022-1767 (ISSN-L)
  • 1550-6606
OpenAlex
W1531140346
Cited by
638
References
34
Citations by year
2026: 10 · 2025: 13 · 2024: 15 · 2023: 21 · 2022: 33 · 2021: 27 · 2020: 22 · 2019: 26 · 2018: 20 · 2017: 35 · 2016: 25 · 2015: 30 · 2014: 24 · 2013: 31 · 2012: 35
FWCI
5.42
Type
journal article
Language
en
Open access
Locations
  • The Journal of Immunology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Wellcome Trust
  • Enterprise Ireland
  • University College Dublin
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Phagocytosis and Immune Regulation
  • Health Sciences › Nursing › Nutrition and Dietetics › Fatty Acid Research and Health
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Eicosanoids and Hypertension Pharmacology
Keywords
lipoxins, lipoxin A4, apoptotic neutrophils, phagocytosis, monocyte-derived macrophages, inflammation resolution, eicosanoids, CD36, protein kinase A, pertussis toxin, neutrophil clearance
MeSH terms
Anti-Inflammatory Agents, Non-Steroidal, Cell Adhesion, Dose-Response Relationship, Immunologic, Humans, Hydroxyeicosatetraenoic Acids, Macrophages, Monocytes, Neutrophils, Phagocytosis, Apoptosis, Cyclic AMP-Dependent Protein Kinases, Molecular Mimicry, Lipoxins

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