Cited by 72Neuroinflammation and Neurodegeneration MechanismsNeurological Disease Mechanisms and TreatmentsIntracerebral and Subarachnoid Hemorrhage Research

Genome-wide transcriptomic analysis of microglia reveals impaired responses in aged mice after cerebral ischemia

Open access
Shi, Ligen, Rocha, Marcelo, Zhang, Wenting, Jiang, Ming, Li, Sicheng, Ye, Qing, Hassan, Sulaiman H, Liu, Liqiang +7 more·2020·Journal of Cerebral Blood Flow & Metabolism

Abstract

Senescence-associated alterations in microglia may have profound impact on cerebral homeostasis and stroke outcomes. However, the lack of a transcriptome-wide comparison between young and aged microglia in the context of ischemia limits our understanding of aging-related mechanisms. Herein, we performed RNA sequencing analysis of microglia purified from cerebral hemispheres of young adult (10-week-old) and aged (18-month-old) mice five days after distal middle cerebral artery occlusion or after sham operation. Considerable transcriptional differences were observed between young and aged microglia in healthy brains, indicating heightened chronic inflammation in aged microglia. Following stroke, the overall transcriptional activation was more robust (>13-fold in the number of genes upregulated) in young microglia than in aged microglia. Gene clusters with functional implications in immune inflammatory responses, immune cell chemotaxis, tissue remodeling, and cell-cell interactions were markedly activated in microglia of young but not aged stroke mice. Consistent with the genomic profiling predictions, post-stroke cerebral infiltration of peripheral immune cells was markedly decreased in aged mice compared to young mice. Moreover, post-ischemic aged microglia demonstrated reduced interaction with neighboring neurons and diminished polarity toward the infarct lesion. These alterations in microglial gene response and behavior may contribute to aging-driven vulnerability and poorer recovery after ischemic stroke.

Integrity signals

Registry

Crossref · 10.1177/0271678x20925655

Cites

78 of 78 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • CLEC7A is a disease-associated microglia gene that increases after TBI in mice, in a mouse model of Alzheimer's disease, and in aged microglia associated with neurodegenerative disease.

    “CLEC7A (FC = 2.02, p = 0.02) is a disease-associated microglia gene which has been shown to increase after TBI in mice [19], in a mouse model of AD [38, 56], and in aged microglia associated with neurodegenerative disease [135].”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Shi, L., Rocha, M., Zhang, W., Jiang, M., Li, S., Ye, Q., Hassan, S. H., Liu, L., Adair, M. N., Xu, J., Luo, J., Hu, X., Wechsler, L. R., Chen, J., & Shi, Y.
Affiliations
University of Pittsburgh (US)
Corresponding author
Shi, Yejie
Venue
Journal of Cerebral Blood Flow & Metabolism
Published
2020-05-21
Volume
40
Issue
1_suppl
Pages
S49-S66
ISSN
  • 0271-678X (ISSN-L)
  • 1559-7016
OpenAlex
W3026206677
Cited by
71
References
78
Citations by year
2026: 9 · 2025: 10 · 2024: 7 · 2023: 13 · 2022: 10 · 2021: 19 · 2020: 3
FWCI
4.35
Type
journal article
Language
en
Open access
Locations
  • Journal of Cerebral Blood Flow & Metabolism (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • U.S. Department of Veterans Affairs (I01 BX002495, I01BX003377)
  • National Cancer Institute (P30CA047904)
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Neuroscience › Neurology › Neurological Disease Mechanisms and Treatments
  • Health Sciences › Medicine › Neurology › Intracerebral and Subarachnoid Hemorrhage Research
Keywords
microglia, aging, ischemic stroke, cerebral ischemia, middle cerebral artery occlusion, microglial transcriptome, chronic inflammation, microglial polarization, peripheral immune cell infiltration, stroke recovery, senescence
MeSH terms
Aged, Animals, Brain Ischemia, Disease Models, Animal, Flow Cytometry, Humans, Male, Sequence Analysis, RNA, Microglia, Genomics, Mice, Transcriptome

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review