Cited by 103Neuroinflammation and Neurodegeneration MechanismsGenetics, Aging, and Longevity in Model OrganismsNeurogenesis and neuroplasticity mechanisms

Cx3cr1- deficient microglia exhibit a premature aging transcriptome

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Gyoneva, Stefka, Hosur, Raghavendra, Gosselin, David, Zhang, Baohong, Ouyang, Zhengyu, Cotleur, Anne C, Peterson, Michael, Allaire, Norm +8 more·2019·Life Science Alliance

Abstract

CX3CR1, one of the highest expressed genes in microglia in mice and humans, is implicated in numerous microglial functions. However, the molecular mechanisms underlying Cx3cr1 signaling are not well understood. Here, we analyzed transcriptomes of Cx3cr1- deficient microglia under varying conditions by RNA-sequencing (RNA-seq). In 2-mo-old mice, Cx3cr1 deletion resulted in the down-regulation of a subset of immune-related genes, without substantial epigenetic changes in markers of active chromatin. Surprisingly, Cx3cr1- deficient microglia from young mice exhibited a transcriptome consistent with that of aged Cx3cr1- sufficient animals, suggesting a premature aging transcriptomic signature. Immunohistochemical analysis of microglia in young and aged mice revealed that loss of Cx3cr1 modulates microglial morphology in a comparable fashion. Our results suggest that CX3CR1 may regulate microglial function in part by modulating the expression levels of a subset of inflammatory genes during chronological aging, making Cx3cr1 -deficient mice useful for studying aged microglia.

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Authors
Gyoneva, S., Hosur, R., Gosselin, D., Zhang, B., Ouyang, Z., Cotleur, A. C., Peterson, M., Allaire, N., Challa, R., Cullen, P., Roberts, C., Miao, K., Reynolds, T. L., Glass, C. K., Burkly, L., & Ransohoff, R. M.
Affiliations
  • Biogen (United States) (US)
  • University of California San Diego (US)
Corresponding author
  • Gyoneva, Stefka
  • Ransohoff, Richard M
Venue
Life Science Alliance
Published
2019-12
Volume
2
Issue
6
Pages
e201900453
ISSN
2575-1077 (ISSN-L)
OpenAlex
W2994105471
Cited by
103
References
68
Citations by year
2026: 13 · 2025: 12 · 2024: 11 · 2023: 12 · 2022: 23 · 2021: 25 · 2020: 7
FWCI
6.06
Type
journal article
Language
en
Open access
Locations
  • Life Science Alliance (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • eScholarship (California Digital Library) (submittedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by)
Funders
National Institute of Neurological Disorders and Stroke (R01NS096170)
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
Keywords
CX3CR1, microglia, premature aging, transcriptome, microglial aging, microglial morphology, inflammatory gene expression, active chromatin, neuroinflammation
MeSH terms
CX3C Chemokine Receptor 1, Genetic Profile, Animals, Disease Models, Animal, Female, Inflammation, Lipopolysaccharides, Male, Mice, Inbred C57BL, Mice, Transgenic, Neurons, Signal Transduction, Gene Deletion, Microglia, Mice, Knockout, Aging, Premature, Receptors, Chemokine, Mice, Transcriptome

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