Cited by 287Fatty Acid Research and HealthPhagocytosis and Immune RegulationEicosanoids and Hypertension Pharmacology

Lipoxins, Aspirin-Triggered Epi-Lipoxins, Lipoxin Stable Analogues, and the Resolution of Inflammation: Stimulation of Macrophage Phagocytosis of Apoptotic Neutrophils In Vivo

Mitchell, Siobhan, Thomas, Graham, Harvey, Killeen, Cottell, David, Reville, Keira, Berlasconi, Giovanni, Petasis, Nicos A., Erwig, Lars +4 more·2002·Journal of the American Society of Nephrology

Abstract

Lipoxins (LX) are eicosanoids with antiinflammatory activity in glomerulonephritis (GN) and inflammatory diseases, hypersensitivity, and ischemia reperfusion injury. It has been demonstrated that LXA(4) stimulates non-phlogistic phagocytosis of apoptotic polymorphonuclear neutrophils (PMN) by monocyte-derived macrophages (Mphi) in vitro, suggesting a role for LX as endogenous pro-resolution lipid mediators. It is here reported that LXA(4), LXB(4), the aspirin-triggered LX (ATL) epimer, 15-epi-LXB(4), and a stable synthetic analogue 15(R/S)-methyl-LXA(4) stimulate phagocytosis of exogenously administered excess apoptotic PMN by macrophages (M phi) in vivo in a classic model of acute inflammation, namely thioglycollate-induced peritonitis. Significant enhancement of phagocytosis in vivo was observed with 15-min exposure to LX and with intraperitoneal doses of LXA(4), LXB(4), 15(R/S)-methyl-LXA(4), and 15-epi-LXB(4) of 2.5 to 10 micro g/kg. Non-phlogistic LX-stimulated phagocytosis by M phi was sensitive to inhibition of PKC and PI 3-kinase and associated with increased production of transforming growth factor-beta(1) (TGF-beta(1)). LX-stimulated phagocytosis was not inhibited by phosphatidylserine receptor (PSR) antisera and was abolished by prior exposure of M phi to beta 1,3-glucan, suggesting a novel M phi-PMN recognition mechanism. Interestingly, the recently described peptide agonists of the LXA(4) receptor (MYFINITL and LESIFRSLLFRVM) stimulated phagocytosis through a process associated with increased TGF-beta(1) release. These data provide the first demonstration that LXA(4), LXB(4), ATL, and LX stable analogues rapidly promote M phi phagocytosis of PMN in vivo and support a role for LX as rapidly acting, pro-resolution signals in inflammation. Engagement of the LXR by LX generated during cell-cell interactions in inflammation and by endogenous LXR peptide agonists released from distressed cells may be an important stimulus for clearance of apoptotic cells and may be amenable to pharmacologic mimicry for therapeutic gain.

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Crossref · 10.1097/01.asn.0000032417.73640.72

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Authors
Mitchell, S., Thomas, G., Harvey, K., Cottell, D., Reville, K., Berlasconi, G., Petasis, N. A., Erwig, L., Rees, A. J., Savill, J., Brady, H. R., & Godson, C.
Affiliations
University College Dublin (IE)
Venue
Journal of the American Society of Nephrology
Published
2002-10
Volume
13
Issue
10
Pages
2497-2507
ISSN
1046-6673 (ISSN-L)
OpenAlex
W2153454088
Cited by
287
References
50
Citations by year
2026: 3 · 2025: 4 · 2024: 6 · 2023: 6 · 2022: 10 · 2021: 17 · 2020: 10 · 2019: 11 · 2018: 17 · 2017: 9 · 2016: 13 · 2015: 13 · 2014: 12 · 2013: 13 · 2012: 16
FWCI
11.40
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of the American Society of Nephrology (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Dental and Craniofacial Research (P01 DE 13499, P01DE013499)
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Fatty Acid Research and Health
  • Life Sciences › Immunology and Microbiology › Immunology › Phagocytosis and Immune Regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Eicosanoids and Hypertension Pharmacology
Keywords
lipoxins, aspirin-triggered lipoxins, inflammation resolution, phagocytosis, apoptotic neutrophils, macrophages, thioglycollate-induced peritonitis, TGF-β1, phosphatidylserine receptor, β-1,3-glucan, eicosanoids, acute inflammation, glomerulonephritis
MeSH terms
Cyclic AMP, Anti-Inflammatory Agents, Aspirin, Bone Marrow, Cells, Cultured, Drug Stability, Enzymes, Humans, Inflammation, Lipids, Macrophages, Neutrophils, Peptides, Phagocytosis, Phenotype, Receptors, Cell Surface, Eicosanoids, Apoptosis, Jumonji Domain-Containing Histone Demethylases

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