Cited by 98Neuroinflammation and Neurodegeneration MechanismsGlycosylation and Glycoproteins ResearchPhagocytosis and Immune Regulation

Microglial CD33-related Siglec-E inhibits neurotoxicity by preventing the phagocytosis-associated oxidative burst

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Claude, Janine, Linnartz-Gerlach, Bettina, Kudin, Alexei P., Kunz, Wolfram S., Neumann, Harald·2013·The Journal of Neuroscience

Abstract

Sialic acid-binding Ig-like lectins (Siglecs) are members of the Ig superfamily that recognize sialic acid residues of glycoproteins. Siglec-E is a mouse CD33-related Siglec that preferentially binds to sialic acid residues of the cellular glycocalyx. Here, we demonstrate gene transcription and protein expression of Siglec-E by cultured mouse microglia. Siglec-E on microglia inhibited phagocytosis of neural debris and prevented the production of superoxide radicals induced by challenge with neural debris. Soluble extracellular Siglec-E receptor protein bound to the neural glycocalyx. Coculture of mouse microglia and neurons demonstrated a neuroprotective effect of microglial Siglec-E that was dependent on neuronal sialic acid residues. Increased neurotoxicity of microglia after knockdown of Siglece mRNA was neutralized by the reactive oxygen species scavenger Trolox. Data suggest that Siglec-E recognizes the intact neuronal glycocalyx and has neuroprotective function by preventing phagocytosis and the associated oxidative burst.

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Crossref · 10.1523/jneurosci.2211-13.2013

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Authors
Claude, J., Linnartz-Gerlach, B., Kudin, A. P., Kunz, W. S., & Neumann, H.
Affiliations
University of Bonn (DE)
Venue
The Journal of Neuroscience
Published
2013-11-13
Volume
33
Issue
46
Pages
18270-18276
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2082914905
Cited by
98
References
18
Citations by year
2026: 6 · 2025: 4 · 2024: 3 · 2023: 7 · 2022: 9 · 2021: 9 · 2020: 9 · 2019: 10 · 2018: 8 · 2017: 11 · 2016: 8 · 2015: 7 · 2014: 6
FWCI
3.92
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Deutsche Forschungsgemeinschaft (KFO177, SFB 704, FOR1336)
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Glycosylation and Glycoproteins Research
  • Life Sciences › Immunology and Microbiology › Immunology › Phagocytosis and Immune Regulation
Keywords
Siglec-E, CD33, microglia, sialic acid-binding lectins, neuroprotection, phagocytosis, respiratory burst, superoxide, reactive oxygen species, neurotoxicity, sialic acid
MeSH terms
Animals, Antigens, Differentiation, B-Lymphocyte, Cells, Cultured, Female, Male, Mice, Inbred C57BL, Neurons, Phagocytosis, Protein Binding, Antigens, CD, Respiratory Burst, Microglia, Neuroprotective Agents, Coculture Techniques, Mice, Sialic Acid Binding Ig-like Lectin 3

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