Cited by 452Wound Healing and TreatmentsImmune cells in cancerMacrophage Migration Inhibitory Factor

The phenotype of murine wound macrophages

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Daley, Jean M, Brancato, Samielle K, Thomay, Alan A, Reichner, Jonathan S, Albina, Jorge E·2009·Journal of Leukocyte Biology

Abstract

Wound macrophages exhibit a complex phenotype, which changes as the wound matures and develops independently of IL-4 or IL-13. The phenotype of wound macrophages has not been studied by direct examination of these cells, yet macrophages recruited to sites of injury are described as alternatively activated macrophages, requiring IL-4 or IL-13 for phenotypic expression. This study characterized wound macrophage phenotype in the PVA sponge wound model in mice. Eighty-five percent of wound macrophages isolated 1 day after injury expressed Gr-1, but only 20% of those isolated at 7 days expressed this antigen. Macrophages from 1-, 3-, and 7-day wounds expressed markers of alternative activation, including mannose receptor, dectin-1, arginase 1, and Ym1, but did not contain iNOS. Day 1 wound macrophages produced more TNF-α, more IL-6, and less TGF-β than Day 7 wound macrophages. Wound macrophages did not produce IL-10. The cytokines considered necessary for alternative activation of macrophages, IL-4 and IL-13, were not detected in the wound environment and were not produced by wound cells. Wound macrophages did not contain PStat6. Wound fluids inhibited IL-13-dependent phosphorylation of Stat6 and contained IL-13Rα2, a soluble decoy receptor for IL-13. The phenotype of wound macrophages was not altered in mice lacking IL-4Rα, which is required for Stat6-dependent signaling of IL-4 and IL-13. Wound macrophages exhibit a complex phenotype, which includes traits associated with alternative and classical activation and changes as the wound matures. The wound macrophage phenotype does not require IL-4 or IL-13.

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Crossref · 10.1189/jlb.0409236

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  • IL-4 and IL-13 are not necessary for modulating macrophage phenotypes in wounds in vivo.

    “As mentioned above, IL-4 and IL-13 are the canonical factors inducing the M2 phenotype, however, recent studies show that they are not necessary for modulating macrophage phenotypes in wounds in vivo [61, 62].”
  • Previous in vivo studies demonstrated concurrent expression of M1 and M2 markers, and enhanced expression of M2 markers has been associated with improved outcomes for implanted biologic scaffolds.

    “Previous in vivo studies demonstrated concurrent expression of M1 and M2 markers (37), and enhanced expression of M2 markers has been associated with improved outcomes for implanted biologic scaffolds (34).”
  • In a mouse wound-healing model, Mp expression of the M2a marker CD206 does not require IL-4 or IL-13 and does not correlate with TNF-α production.

    “For instance, in a mouse wound-healing model, Mp expression of the M2a marker CD206 does not require IL-4 or IL-13 and does not correlate, negatively or otherwise, with TNF-␣ production [33].”

    From Macrophage phenotypes during tissue repair (2013) · cites this paper as [33]

  • The M1-associated cytokines IL-1β, TNF-α, IL-6, and IL-12 are expressed by Mp during the first few hours to days after acute injury in numerous tissues, including skin, liver, kidney, and skeletal muscle.

    “The M1-associated cytokines IL-1␤, TNF-␣, IL-6, and IL-12 are expressed by Mp during the first few hours to days after acute injury in numerous tissues, including skin [33,60,61], liver [62], kidney [63], and skeletal muscle [57,64].”

    From Macrophage phenotypes during tissue repair (2013) · cites this paper as [33]

  • Although CD206, Ym1, and dectin-1 are expressed by murine subcutaneous wound Mp at 1, 3, and 7 days postinjury, these three M2a-associated proteins exhibit entirely different temporal patterns: CD206 increases somewhat with time, whereas Ym1 is expressed most highly at 1-day postinjury and then decreases, and dectin-1 expression remains constant.

    “However, although CD206, Ym1, and dectin-1 are expressed by murine subcutaneous wound Mp at 1, 3, and 7 days postinjury [33], these three M2a-associated proteins exhibit entirely different temporal patterns: CD206 increases somewhat with time, whereas Ym1 is expressed most highly at 1-day postinjury and then decreases, and dectin-1 expression remains constant [33].”

    From Macrophage phenotypes during tissue repair (2013) · cites this paper as [33]

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Authors
Daley, J. M., Brancato, S. K., Thomay, A. A., Reichner, J. S., & Albina, J. E.
Affiliations
Brown University (US)
Corresponding author
Daley, Jean M
Venue
Journal of Leukocyte Biology
Published
2009-10-22
Volume
87
Issue
1
Pages
59-67
ISSN
  • 0741-5400 (ISSN-L)
  • 1938-3673
OpenAlex
W2137178267
Cited by
452
References
34
Citations by year
2026: 14 · 2025: 15 · 2024: 26 · 2023: 18 · 2022: 30 · 2021: 37 · 2020: 23 · 2019: 32 · 2018: 32 · 2017: 22 · 2016: 32 · 2015: 36 · 2014: 32 · 2013: 39 · 2012: 27
FWCI
21.73
Type
journal article
Language
en
Open access
Locations
  • Journal of Leukocyte Biology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institutes of Health (GM-79227, GM-66194, GM-42859, T32GM-65085)
Topics
  • Health Sciences › Medicine › Rehabilitation › Wound Healing and Treatments
  • Life Sciences › Immunology and Microbiology › Immunology › Immune cells in cancer
  • Life Sciences › Immunology and Microbiology › Immunology › Macrophage Migration Inhibitory Factor
Keywords
macrophage phenotype, alternative activation, classical activation, IL-4, IL-13, STAT6 signaling, Gr-1, CD206, Dectin-1, arginase-1, Ym1, cytokine production, wound healing, IL-4 receptor alpha
MeSH terms
Mannose Receptor, Dectin-1, Animals, Exudates and Transudates, Foreign Bodies, Gelatin Sponge, Absorbable, Macrophage Activation, Macrophages, Male, Membrane Proteins, Nerve Tissue Proteins, Phenotype, Phosphorylation, Protein Processing, Post-Translational, Receptors, Cell Surface, Skin, Specific Pathogen-Free Organisms, Wound Healing, Biomarkers, Interleukin-4, Cytokines, Mice, Knockout, Interleukin-13, Receptors, Chemokine, Lectins, C-Type, Mannose-Binding Lectins, STAT6 Transcription Factor, Mice, Interleukin-4 Receptor alpha Subunit

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