Cited by 66Neuroinflammation and Neurodegeneration MechanismsNeurogenesis and neuroplasticity mechanismsPhagocytosis and Immune Regulation

Definition of a mouse microglial subset that regulates neuronal development and proinflammatory responses in the brain

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Shen, Xianli, Qiu, Yiguo, Wight, Andrew E., Kim, Hye-Jung, Cantor, Harvey·2022·Proceedings of the National Academy of Sciences

Abstract

Significance: CD11c + microglia enriched for osteopontin (OPN) expression appear at distinct stages of brain development, aging, and several neurodegenerative disorders. Whether coexpression of CD11c and OPN results from microglial activation or represents a part of a subset-specific genetic program is unknown. We find that this CD11c + microglial subset is formed before birth upon uptake of apoptotic neurons. Our analysis also suggests that it represents a stable subset that requires OPN to mediate engulfment of synaptic proteins, proliferate, and develop a proinflammatory phenotype. Definition of OPN-producing CD11c + microglia as a specialized microglial subset provides insight into the contribution of microglial differentiation to brain development and function in health and disease.

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Crossref · 10.1073/pnas.2116241119

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  • CD11c+ microglia are known to increase in chronic inflammatory and neurodegenerative conditions as well as during development.

    “CD11c+ microglia are known to increase in chronic inflammatory and neurodegenerative conditions as well as during development [76–83]”

    From PLCγ2 deficiency compromises systemic immune tolerance and erodes myelin homeostasis while enhancing oxidative metabolism in the mouse brain (2026) · cites this paper as [83]

    The Results section reports that CD11c+ microglia increase shortly after birth, and the Abstract identifies them in mouse models of neurodegenerative disease. The paper does not establish that their numbers increase in chronic inflammatory conditions; its Results instead show that inflammatory activating stimuli did not induce CD11c expression in CD11c− microglia. (LLM, conf=0.87)

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Authors
Shen, X., Qiu, Y., Wight, A. E., Kim, H.-J., & Cantor, H.
Affiliations
Harvard University (US)
Corresponding author
Cantor, Harvey
Venue
Proceedings of the National Academy of Sciences
Published
2022-02-17
Volume
119
Issue
8
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W4212911584
Cited by
58
References
35
Citations by year
2026: 8 · 2025: 15 · 2024: 16 · 2023: 16 · 2022: 3
FWCI
5.00
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Funders
  • HHS | NIH | National Institute of Allergy and Infectious Diseases (R01AI048125, R01AI037562)
  • American Association of Immunologists (Intersect Fellowship)
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Immunology and Microbiology › Immunology › Phagocytosis and Immune Regulation
Keywords
microglia, CD11c, osteopontin, brain development, neuronal development, microglial proliferation, pro-inflammatory phenotype, neuroinflammation, microglial differentiation, mice
MeSH terms
Animals, Brain, Female, Gene Expression Regulation, Inflammation, Macrophage Activation, Macrophages, Male, Mice, Inbred C57BL, Phagocytes, Gene Expression, Microglia, CD11 Antigens, Mice, Osteopontin, Neurogenesis, Transcriptome

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