Cited by 23Immune cells in cancerPhagocytosis and Immune RegulationT-cell and B-cell Immunology

CD28 is expressed by macrophages with anti‐inflammatory potential and limits their T‐cell activating capacity

Estrada‐Capetillo, Lizbeth, Aragoneses‐Fenoll, Laura, Domínguez‐Soto, Ángeles, Fuentelsaz‐Romero, Sara, Nieto, Concha, Simón‐Fuentes, Miriam, Alonso, Bárbara, Portolés, Pilar +3 more·2021·European Journal of Immunology

Abstract

CD28 expression is generally considered to be T lymphocyte specific. We have previously shown CD28 mRNA expression in M-CSF-dependent anti-inflammatory monocyte-derived macrophages (M-MØ), and now demonstrate that CD28 cell surface expression is higher in M-MØ than in GM-CSF-dependent macrophages, and that macrophage CD28 expression is regulated by MAFB and activin A. In vivo, CD28 was found in tumor-associated macrophages and, to a lower extent, in pro-inflammatory synovial fluid macrophages from rheumatoid arthritis patients. Analysis of mouse macrophages confirmed Cd28 expression in bone-marrow derived M-MØ. Indeed, anti-CD28 antibodies triggered ERK1/2 phosphorylation in mouse M-MØ. At the functional level, Cd28KO M-MØ exhibited a significantly higher capacity to activate the OVA-specific proliferation of OT-II CD4 + T cells than WT M-MØ, as well as enhanced LPS-induced IL-6 production. Besides, the Cd28KO M-MØ transcriptome was significantly different from WT M-MØ regarding the expression IFN response, inflammatory response, and TGF-β signaling related gene sets. Therefore, defective CD28 expression in mouse macrophages associates to changes in gene expression profile, what might contribute to the altered functionality displayed by Cd28KO M-MØ. Thus, CD28 expression appears as a hallmark of anti-inflammatory macrophages and might be a target for immunotherapy.

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Crossref · 10.1002/eji.202048806

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  • CD28 has been reported in anti-inflammatory macrophages, where it was proposed as a marker of suppressive or regulatory macrophage polarization rather than conventional lymphocyte activation.

    “In peripheral myeloid biology, CD28 has been reported in anti-inflammatory macrophages, where it was proposed as a marker of suppressive or regulatory macrophage polarization rather than conventional lymphocyte activation [43].”
  • CD28 expression in a myeloid cell may mark an immunoregulatory state rather than a lineage error or sequencing artifact.

    “This precedent does not prove that microglial CD28 has the same function, but it makes the Ayata et al. finding more plausible: CD28 expression in a myeloid cell may mark an immunoregulatory state rather than a lineage error or sequencing artifact.”

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Authors
Estrada‐Capetillo, L., Aragoneses‐Fenoll, L., Domínguez‐Soto, Á., Fuentelsaz‐Romero, S., Nieto, C., Simón‐Fuentes, M., Alonso, B., Portolés, P., Corbí, A. L., Rojo, J. M., & Puig‐Kröger, A.
Affiliations
  • Hospital General Universitario Gregorio Marañón (ES)
  • Unidad de Inmunología Celular, Centro Nacional de Microbiología Instituto de Salud Carlos III Madrid Spain
  • Centro de Investigaciones Biológicas Margarita Salas (ES)
  • Unidad de InmunoMetabolismo e Inflamación, Instituto de Investigación Sanitaria Gregorio Marañón Hospital General Universitario Gregorio Marañón Madrid Spain
  • Centro de Investigaciones Biológicas Margarita Salas Madrid Spain
Corresponding author
Puig‐Kröger, Amaya
Venue
European Journal of Immunology
Publisher
Wiley
Published
2020-11-24
Volume
51
Issue
4
Pages
824-834
ISSN
  • 0014-2980 (ISSN-L)
  • 1521-4141
OpenAlex
W3103333209
Cited by
22
References
61
Citations by year
2026: 6 · 2025: 5 · 2024: 6 · 2023: 2 · 2022: 2
FWCI
0.35
Type
journal article
Language
en
Open access
closed
Locations
  • European Journal of Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • DIGITAL.CSIC (Spanish National Research Council (CSIC)) (submittedVersion)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immune cells in cancer
  • Life Sciences › Immunology and Microbiology › Immunology › Phagocytosis and Immune Regulation
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
Keywords
CD28, macrophages, anti-inflammatory macrophages, MAFB, activin A, tumor-associated macrophages, T cell activation, ERK1/2 phosphorylation, interleukin-6, TGF-beta signaling, macrophage transcriptome, immunotherapy targets
MeSH terms
Animals, Arthritis, Rheumatoid, Cells, Cultured, Humans, Inflammation, Lymphocyte Activation, Macrophages, Mice, Inbred C57BL, T-Lymphocytes, Signal Transduction, Gene Expression, CD28 Antigens, Mice, Knockout, Gene Expression Profiling, Activins, MafB Transcription Factor, Mice

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