Cited by 1,334Neutrophil, Myeloperoxidase and Oxidative MechanismsImmune cells in cancerInflammation biomarkers and pathways

Neutrophil: A Cell with Many Roles in Inflammation or Several Cell Types?

Open access
Rosales, Carlos·2018·Frontiers in Physiology

Abstract

Neutrophils are the most abundant leukocytes in the circulation, and have been regarded as first line of defense in the innate arm of the immune system. They capture and destroy invading microorganisms, through phagocytosis and intracellular degradation, release of granules, and formation of neutrophil extracellular traps after detecting pathogens. Neutrophils also participate as mediators of inflammation. The classical view for these leukocytes is that neutrophils constitute a homogenous population of terminally differentiated cells with a unique function. However, evidence accumulated in recent years, has revealed that neutrophils present a large phenotypic heterogeneity and functional versatility, which place neutrophils as important modulators of both inflammation and immune responses. Indeed, the roles played by neutrophils in homeostatic conditions as well as in pathological inflammation and immune processes are the focus of a renovated interest in neutrophil biology. In this review, I present the concept of neutrophil phenotypic and functional heterogeneity and describe several neutrophil subpopulations reported to date. I also discuss the role these subpopulations seem to play in homeostasis and disease.

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Crossref · 10.3389/fphys.2018.00113

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  • Anti-inflammatory N2 neutrophils are polarized by IL-8 and switch their secretomes to TGF-β, IL-10, and SDF-1α, which in turn promotes Tregs and alternatively activated M2 macrophages.

    “Anti-inflammatory N2 neutrophils are polarized by IL-8 and switch their secretomes to TGF-β, IL-10, and SDF-1α which in turn promotes Tregs and alternatively activated M2 macrophages [19, 39–41].”

    From Osteoimmunology of Fracture Healing. (2024) · cites this paper as [39]

    The ‘Neutrophil subpopulations in cancer’ section describes N2 tumor-associated neutrophils as immunosuppressive, but associates their N2 phenotype with TGF-β in tumor-bearing mice, not IL-8 polarization. The ‘Neutrophil subpopulations in inflammation’ section says a different subset, PMN-2, produces IL-10 and alternatively activates macrophages. Neither passage supports the claimed N2 secretome of TGF-β, IL-10, and SDF-1α or its promotion of Tregs. (LLM, conf=0.87)

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Authors
Rosales, C.
Affiliations
Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México (MX)
Corresponding author
Rosales, Carlos
Venue
Frontiers in Physiology
Published
2018-02-20
Volume
9
Pages
113-113
ISSN
1664-042X (ISSN-L)
OpenAlex
W2792366526
Cited by
1,334
References
206
Citations by year
2026: 104 · 2025: 162 · 2024: 207 · 2023: 236 · 2022: 196 · 2021: 196 · 2020: 142 · 2019: 67 · 2018: 22 · 2017: 1 · 2016: 1
FWCI
10.79
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Physiology (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Consejo Nacional de Ciencia y Tecnología (254434)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Neutrophil, Myeloperoxidase and Oxidative Mechanisms
  • Life Sciences › Immunology and Microbiology › Immunology › Immune cells in cancer
  • Life Sciences › Immunology and Microbiology › Immunology › Inflammation biomarkers and pathways
Keywords
neutrophils, neutrophil heterogeneity, neutrophil subpopulations, inflammation, innate immunity, neutrophil extracellular traps, phagocytosis, granule release, immune homeostasis

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