Cited by 89Acne and Rosacea Treatments and EffectsDermatology and Skin DiseasesImmune cells in cancer

Sebum lipids influence macrophage polarization and activation

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Lovászi, M., Mattii, M., Eyerich, K., Gácsi, A., Csányi, E., Kovács, D., Rühl, R., Szegedi, A. +5 more·2017·British Journal of Dermatology

Abstract

BACKGROUND: As lipids are known to regulate macrophage functions, it is reasonable to suppose that a sebocyte-macrophage axis mediated by sebum lipids may exist. OBJECTIVES: To investigate if sebocytes could contribute to the differentiation, polarization and function of macrophages with their secreted lipids. METHODS: Oil Red O lipid staining and Raman spectroscopy were used to assess the dermal lipid content and penetration. Immunohistochemistry was used to analyse the macrophage subsets. Human peripheral blood monocytes were differentiated in the presence of either supernatant from human SZ95 sebocytes or major sebum lipid components and activated with Propionibacterium acnes. Macrophage surface markers and their capacity to uptake fluorescein isothiocyanate-conjugated P. acnes were detected by fluorescence-activated cell sorting measurements. Cytokine protein levels were evaluated by enzyme-linked immunosorbent assay and Western blot analysis. RESULTS: Sebaceous gland-rich skin had an increased dermal lipid content vs. sebaceous gland-poor skin to which all the tested sebum component lipids could contribute by penetrating the dermoepidermal barrier. Of the lipids, oleic acid and linoleic acid promoted monocyte differentiation into alternatively activated macrophages. Moreover, linoleic acid also had an anti-inflammatory effect in P. acnes-activated macrophages, inhibiting the secretion of interleukin (IL)-1β, IL-6 and tumour necrosis factor (TNF)-α. Squalene, palmitic acid, stearic acid and oleic acid augmented the secretion of IL-1β, even in the absence of P. acnes, whereas oleic acid had a selective effect of inducing IL-1β but downregulating IL-6 and TNF-α secretion. CONCLUSIONS: Our results suggest a role for sebaceous glands in modulating innate immune responses via their secreted lipids that are of possible pathological and therapeutic relevance.

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  • Linoleic and oleic acid enhanced the ability of macrophages to phagocytose different particles as well as P. acnes bacteria.

    “Furthermore, these lipids also enhanced the ability of macrophages to phagocytose different particles as well as P. acnes bacteria.23”

    From Sebaceous-immunobiology is orchestrated by sebum lipids (2017) · cites this paper as [23]

    The section “Sebocyte-derived lipids contribute to the potential of macrophages to uptake P. acnes” (page unavailable) reports that linoleic and oleic acids increased macrophage uptake of P. acnes. It does not report uptake of different particles; the Phagocytosis assay section (page unavailable) likewise describes only P. acnes. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Lipid staining with Oil Red confirmed prominent differences in the lipid content of sebaceous gland-rich versus sebaceous gland-poor skin samples.

    “Moreover, lipid staining with Oil Red further confirmed prominent differences in the lipid content of sebaceous gland-rich vs sebaceous gland-poor skin samples.23”

    From Sebaceous-immunobiology is orchestrated by sebum lipids (2017) · cites this paper as [23]

  • Fatty acids exhibited a differential effect on the inflammatory response of P. acnes-activated macrophages.

    “Importantly, fatty acids exhibited a differential effect on the inflammatory response of P. acnes-activated macrophages.23”

    From Sebaceous-immunobiology is orchestrated by sebum lipids (2017) · cites this paper as [23]

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Authors
Lovászi, M., Mattii, M., Eyerich, K., Gácsi, A., Csányi, E., Kovács, D., Rühl, R., Szegedi, A., Kemény, L., Ståhle, M., Zouboulis, C. C., Eyerich, S., & Törőcsik, D.
Affiliations
  • University of Debrecen (HU)
  • Helmholtz Munich (DE)
  • Technical University of Munich (DE)
  • University of Szeged (HU)
  • Karolinska University Hospital (SE)
  • Medizinische Hochschule Brandenburg Theodor Fontane (DE)
Corresponding author
Törőcsik, D.
Venue
British Journal of Dermatology
Published
2017-11-28
Volume
177
Issue
6
Pages
1671-1682
ISSN
0007-0963 (ISSN-L)
OpenAlex
W2683693205
Cited by
88
References
51
Citations by year
2026: 7 · 2025: 10 · 2024: 11 · 2023: 16 · 2022: 9 · 2021: 10 · 2020: 6 · 2019: 10 · 2018: 8 · 2017: 1
FWCI
7.82
Type
journal article
Language
en
Open access
Locations
  • British Journal of Dermatology (publishedVersion)
  • PubMed (publishedVersion)
  • SZTE Publicatio Repozitórium (University of Szeged) (acceptedVersion)
  • University of Debrecen Electronic Archive (University of Debrecen) (submittedVersion, other-oa)
  • University of Debrecen Electronic Archive (University of Debrecen) (submittedVersion)
  • mediaTUM – the media and publications repository of the Technical University Munich (Technical University Munich) (submittedVersion)
  • Site cant be reached (submittedVersion)
  • PuSH - Publication Server of Helmholtz Zentrum München (submittedVersion)
Funders
  • Hungarian National Research Fund (OTKA NN117020)
  • FP7 People: Marie-Curie Actions
  • Emberi Eroforrások Minisztériuma (GINOP-2.3.2-15-2016-00050)
  • European Union
  • European Regional Development Fund
  • Fondation Acteria
  • Helmholtz-Gemeinschaft
Topics
  • Health Sciences › Medicine › Dermatology › Acne and Rosacea Treatments and Effects
  • Health Sciences › Medicine › Dermatology › Dermatology and Skin Diseases
  • Life Sciences › Immunology and Microbiology › Immunology › Immune cells in cancer
Keywords
sebum lipids, sebocytes, macrophage polarization, macrophage activation, oleic acid, linoleic acid, Propionibacterium acnes, M2 macrophages, sebaceous glands, innate immunity, IL-1β, interleukin-6, TNF-α
MeSH terms
Cell Differentiation, Humans, Immunity, Innate, Lipids, Macrophage Activation, Macrophages, Phagocytosis, Propionibacterium acnes, Sebaceous Glands, Sebum, Cytokines, Cell Polarity, Lipid Metabolism

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