Cited by 138Asthma and respiratory diseasesImmune cells in cancerIL-33, ST2, and ILC Pathways

Macrophages are critical to the maintenance of IL-13-dependent lung inflammation and fibrosis

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Borthwick, L A, Barron, L, Hart, K M, Vannella, K M, Thompson, R W, Oland, S, Cheever, A, Sciurba, J +3 more·2016·Mucosal Immunology

Abstract

The roles of macrophages in type 2-driven inflammation and fibrosis remain unclear. Here, using CD11b-diphtheria toxin receptor (DTR) transgenic mice and three models of interleukin 13 (IL-13)-dependent inflammation, fibrosis, and immunity, we show that CD11b(+) F4/80(+) Ly6C(+) macrophages are required for the maintenance of type 2 immunity within affected tissues but not secondary lymphoid organs. Direct depletion of macrophages during the maintenance or resolution phases of secondary Schistosoma mansoni egg-induced granuloma formation caused a profound decrease in inflammation, fibrosis, and type 2 gene expression. Additional studies with CD11c-DTR and CD11b/CD11c-DTR double-transgenic mice suggested that macrophages but not dendritic cells were critical. Mechanistically, macrophage depletion impaired effector CD4(+) T helper type 2 (Th2) cell homing and activation within the inflamed lung. Depletion of CD11b(+) F4/80(+) Ly6C(+) macrophages similarly reduced house dust mite-induced allergic lung inflammation and suppressed IL-13-dependent immunity to the nematode parasite Nippostrongylus brasiliensis. Consequently, therapeutic strategies targeting macrophages offer a novel approach to ameliorate established type 2 inflammatory diseases.

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  • TGF-β1 activity is believed to control tissue homeostasis in all mucosal surfaces, especially the intestine.

    “This has relevance to all mucosal surfaces, especially the intestine, where TGF-β1 activity is believed to control tissue homeostasis83–85.”

    From Fibrosis: from mechanisms to medicines (2020) · cites this paper as [83]

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Authors
Borthwick, L. A., Barron, L., Hart, K. M., Vannella, K. M., Thompson, R. W., Oland, S., Cheever, A., Sciurba, J., Ramalingam, T. R., Fisher, A. J., & Wynn, T. A.
Affiliations
  • National Institutes of Health (US)
  • Freeman Hospital (GB)
Corresponding author
Wynn, T A
Venue
Mucosal Immunology
Publisher
Elsevier BV
Published
2016-01
Volume
9
Issue
1
Pages
38-55
ISSN
1933-0219 (ISSN-L)
OpenAlex
W1989021802
Cited by
138
References
54
Citations by year
2026: 8 · 2025: 5 · 2024: 14 · 2023: 10 · 2022: 11 · 2021: 15 · 2020: 15 · 2019: 11 · 2018: 15 · 2017: 18 · 2016: 11 · 2015: 5
FWCI
12.03
Type
journal article
Language
en
Open access
Locations
  • Mucosal Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Newcastle University ePrints (Newcastle Univesity) (cc-by-nc)
Funders
  • European Commission
  • National Institutes of Health
  • National Institute of Allergy and Infectious Diseases (Z01AI000829)
Topics
  • Health Sciences › Medicine › Physiology › Asthma and respiratory diseases
  • Life Sciences › Immunology and Microbiology › Immunology › Immune cells in cancer
  • Life Sciences › Immunology and Microbiology › Immunology › IL-33, ST2, and ILC Pathways
Keywords
macrophages, IL-13, Th2 immune response, pulmonary fibrosis, lung inflammation, house dust mite allergy, Nippostrongylus brasiliensis, macrophage depletion, CD11b, F4/80, Ly6C, dendritic cells, macrophage-targeted therapy
MeSH terms
Animals, Antigens, Differentiation, Antigens, Ly, Fibrosis, Gene Expression Regulation, Lung, Mice, Transgenic, Nippostrongylus, Pneumonia, Schistosoma mansoni, Schistosomiasis mansoni, Signal Transduction, Macrophages, Alveolar, Strongylida Infections, Th2 Cells, Interleukin-13, CD11b Antigen, Pyroglyphidae, Mice, Heparin-binding EGF-like Growth Factor

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