Cited by 59Immune cells in cancerCytokine Signaling Pathways and InteractionsMast cells and histamine

Involvement of IGF-1 and Akt in M1/M2 activation state in bone marrow-derived macrophages

Barrett, James P., Minogue, Aedín M., Falvey, Aidan, Lynch, Marina A.·2015·Experimental Cell Research

Abstract

Macrophages can be polarised to adopt the M1 or M2 phenotype and functional outcomes of activation include altered secretion of immune molecules such as insulin-like growth factor (IGF)-1 as well as upregulation of cell surface molecules specifically associated with each state. Interleukin (IL)-4 mediates its effects through two receptors, the type I and II receptors and activation of these receptors results in phosphorylation of signal transducers and activators of transcription (STAT)6. JAK3 is activated as a consequence of ligation of the type I IL-4R, which participates in Akt activation. We set out to investigate the impact of perturbation of IGF-1 tone on IL-4- and interferon (IFN)γ-induced activation, the mechanisms by which this may occur and the contribution of type I IL-4R activation to adoption of the M2 state. The data presented here indicate that IL-4-induced activation of Akt is JAK3-dependent, enhanced by release of IGF-1 and necessary for full adoption of the M2 phenotype, since blocking IGF-1 activity blunts the ability of IL-4 to induce activation of Akt and to upregulate expression of some M2-associated molecules. In addition, differential control of the expression of mannose receptor (MRC1), arginase-1 (Arg-1), chitinase-3 like 3 (Chi3l3) and found in inflammatory zone 1 (FIZZ1) was observed. The IFNγ-induced decrease in IGF-1 was exacerbated by inhibition of phosphatidylinositol-3 (PI3) kinase, indicating that Akt may regulate its own activation via IGF-1. Overall, a deficit in IGF-1/Akt signalling is associated with decreased capacity to induce the M2 state and an increased responsiveness to IFNγ.

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Crossref · 10.1016/j.yexcr.2015.05.015

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Authors
Barrett, J. P., Minogue, A. M., Falvey, A., & Lynch, M. A.
Affiliations
Trinity College Dublin (IE)
Corresponding author
Minogue, Aedín M.
Venue
Experimental Cell Research
Publisher
Elsevier BV
Published
2015-07
Volume
335
Issue
2
Pages
258-268
ISSN
0014-4827 (ISSN-L)
OpenAlex
W773459996
Cited by
59
References
29
Citations by year
2026: 1 · 2025: 3 · 2024: 7 · 2023: 7 · 2022: 7 · 2021: 7 · 2020: 6 · 2019: 5 · 2018: 5 · 2017: 7 · 2016: 2 · 2015: 2
FWCI
2.62
Type
journal article
Language
en
Open access
closed
Locations
  • Experimental Cell Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
Science Foundation Ireland (07/IN.1/B949)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immune cells in cancer
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
  • Life Sciences › Immunology and Microbiology › Immunology › Mast cells and histamine
Keywords
insulin-like growth factor I, Akt signaling, macrophage polarization, M2 macrophages, M1 macrophages, bone marrow-derived macrophages, IL-4, JAK3, interferon-gamma, PI3K signaling, arginase-1, Fizz1, STAT6
MeSH terms
Animals, Cells, Cultured, Insulin-Like Growth Factor I, Macrophage Activation, Macrophages, Signal Transduction, Interleukin-4, Proto-Oncogene Proteins c-akt, Mice, Janus Kinase 3, Transcriptome

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