Cited by 1,011Neuroinflammation and Neurodegeneration MechanismsCytokine Signaling Pathways and InteractionsT-cell and B-cell Immunology

IL-34 is a tissue-restricted ligand of CSF1R required for the development of Langerhans cells and microglia

Open access
Wang, Yaming, Szretter, Kristy J, Vermi, William, Gilfillan, Susan, Rossini, Cristina, Cella, Marina, Barrow, Alexander D, Diamond, Michael S +1 more·2012·Nature Immunology

Abstract

The differentiation of bone marrow-derived progenitor cells into monocytes, tissue macrophages and some dendritic cell (DC) subtypes requires the growth factor CSF1 and its receptor, CSF1R. Langerhans cells (LCs) and microglia develop from embryonic myeloid precursor cells that populate the epidermis and central nervous system (CNS) before birth. Notably, LCs and microglia are present in CSF1-deficient mice but absent from CSF1R-deficient mice. Here we investigated whether an alternative CSF1R ligand, interleukin 34 (IL-34), is responsible for this discrepancy. Through the use of IL-34-deficient (Il34(LacZ/LacZ)) reporter mice, we found that keratinocytes and neurons were the main sources of IL-34. Il34(LacZ/LacZ) mice selectively lacked LCs and microglia and responded poorly to skin antigens and viral infection of the CNS. Thus, IL-34 specifically directs the differentiation of myeloid cells in the skin epidermis and CNS.

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Crossref · 10.1038/ni.2360

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  • Langerhans cells are a unique cell population to the skin organ, where fate-mapping of macrophages demonstrates in situ proliferation to Langerhans cells in the skin during embryonic development.

    “Langerhans cells are a unique cell population to the skin organ, where fate‐mapping of macrophages demonstrates in situ proliferation to Langerhans cells in the skin during embryonic development.[ 78 , 79 , 80 , 81 ]”

    From Coordinated Development of Immune Cell Populations in Vascularized Skin Organoids from Human Induced Pluripotent Stem Cells (2025) · cites this paper as [80]

    The Introduction identifies Langerhans cells as resident cells of the epidermis, and the Results section 'The development of microglia and LCs require IL-34' says their primitive precursors populate the skin before birth and expand around birth (page unavailable). The paper does not report macrophage fate-mapping or demonstrate that macrophages proliferate in situ into Langerhans cells during embryonic development. (LLM, conf=0.85)

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  • Transcriptomic and proteomic analyses of microglial cells suggested a microglial homeostatic signature that is perturbed during aging and under pathological conditions.

    “Transcriptomic and proteomic analyses of microglial cells suggested a microglial homeostatic signature that is perturbed during aging and under pathological conditions48.”

    From A common haplotype lowers PU.1 expression in myeloid cells and delays onset of Alzheimer's disease (2017) · cites this paper as [48]

    The Results section on IL-34 deficiency and the Discussion address microglial abundance, CNS protection and possible roles in neurodegenerative pathology (page unavailable). Searches for transcriptomic or proteomic analyses, a homeostatic signature and aging found no passage addressing the claimed signature or its perturbation. (LLM, conf=0.77)

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  • Microglial survival and maintenance depend on cytokines including CSF1 and IL-34 and on transcription factors such as IRF8.

    “Microglial survival and maintenance depend on cytokines, including CSF1 and interleukin (IL)-3414, and on transcription factors such as IRF812.”

    From Microglia in neurodegeneration (2018) · cites this paper as [14]

  • Microglial development depends on CSF1R and on IRF8, which is essential for development of mature A2 microglial precursors.

    “the development of microglia is dependent on CSF1R, which transmits signals upon activation by its ligands CSF1 and IL-34 and serves as a survival factor68.”

    From Microglial signatures and their role in health and disease (2018) · cites this paper as [68]

  • CSF1 acting via CSF1R is important for microglial development, and IL-34 promotes tissue-specific signalling required for differentiation of skin myeloid cells and CNS microglia.

    “the cytokine CSF1, acting via its receptor CSF1R, is important for microglial development8.”

    From Microglial signatures and their role in health and disease (2018) · cites this paper as [68]

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Research works printed but not linked: 2

  1. [55]Kinoshita M Characterization of two F4/80-positive Kupffer cell subsets by their function and phenotype in mice J Hepatol 53 903 910 2010 20739085
  2. [61]Igyártó BZ Skin-resident murine dendritic cell subsets promote distinct and opposing antigen-specific T helper cell responses Immunity 35 260 272 2011 21782478 PMC3163010

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Authors
Wang, Y., Szretter, K. J., Vermi, W., Gilfillan, S., Rossini, C., Cella, M., Barrow, A. D., Diamond, M. S., & Colonna, M.
Affiliations
  • Washington University in St. Louis (US)
  • University of Brescia (IT)
Corresponding author
Colonna, Marco
Venue
Nature Immunology
Published
2012-06-24
Volume
13
Issue
8
Pages
753-760
ISSN
  • 1529-2908 (ISSN-L)
  • 1529-2916
OpenAlex
W1994581225
Cited by
1,011
References
59
Citations by year
2026: 57 · 2025: 68 · 2024: 74 · 2023: 73 · 2022: 77 · 2021: 91 · 2020: 80 · 2019: 96 · 2018: 64 · 2017: 72 · 2016: 63 · 2015: 59 · 2014: 76 · 2013: 49 · 2012: 12
FWCI
31.58
Type
journal article
Language
en
Open access
Locations
  • Nature Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Institutional Research Information System (Università degli Studi di Brescia) (submittedVersion, public-domain)
Funders
  • National Heart, Lung, and Blood Institute (HL097805, R01HL097805, T32HL007317)
  • National Institute of General Medical Sciences (GM77279, R01GM077279)
  • National Institute of Diabetes and Digestive and Kidney Diseases (P30DK020579)
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
Keywords
IL-34, CSF1R, Langerhans cells, microglia, keratinocytes, neurons, myeloid differentiation, dendritic cells, CSF-1, skin immunity
MeSH terms
Animals, Cell Differentiation, Central Nervous System, Interleukins, Langerhans Cells, Macrophages, Mice, Inbred C57BL, Neurons, Skin, West Nile Fever, West Nile virus, Keratinocytes, Macrophage Colony-Stimulating Factor, Receptor, Macrophage Colony-Stimulating Factor, Microglia, Mice, Knockout, Myeloid Cells, Myelopoiesis, Mice

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