Cited by 63Prion Diseases and Protein MisfoldingNeuroinflammation and Neurodegeneration MechanismsAlzheimer's disease research and treatments

Prion infection of mouse brain reveals multiple new upregulated genes involved in neuroinflammation or signal transduction

Open access
Carroll, James A., Striebel, James F., Race, Brent, Phillips, Katie, Chesebro, Bruce·2015·Journal of Virology

Abstract

Gliosis is often a preclinical pathological finding in neurodegenerative diseases, including prion diseases, but the mechanisms facilitating gliosis and neuronal damage in these diseases are not understood. To expand our knowledge of the neuroinflammatory response in prion diseases, we assessed the expression of key genes and proteins involved in the inflammatory response and signal transduction in mouse brain at various times after scrapie infection. In brains of scrapie-infected mice at pre- and postclinical stages, we identified 15 previously unreported differentially expressed genes related to inflammation or activation of the STAT signal transduction pathway. Levels for the majority of differentially expressed genes increased with time postinfection. In quantitative immunoblotting experiments of STAT proteins, STAT1α, phosphorylated-STAT1α (pSTAT1α), and pSTAT3 were increased between 94 and 131 days postinfection (p.i.) in brains of mice infected with strain 22L. Furthermore, a select group of STAT-associated genes was increased preclinically during scrapie infection, suggesting early activation of the STAT signal transduction pathway. Comparison of inflammatory markers between mice infected with scrapie strains 22L and RML indicated that the inflammatory responses and gene expression profiles in the brains were strikingly similar, even though these scrapie strains infect different brain regions. The endogenous interleukin-1 receptor antagonist (IL-1Ra), an inflammatory marker, was newly identified as increasing preclinically in our model and therefore might influence scrapie pathogenesis in vivo. However, in IL-1Ra-deficient or overexpressor transgenic mice inoculated with scrapie, neither loss nor overexpression of IL-1Ra demonstrated any observable effect on gliosis, protease-resistant prion protein (PrPres) formation, disease tempo, pathology, or expression of the inflammatory genes analyzed. IMPORTANCE Prion infection leads to PrPres deposition, gliosis, and neuroinflammation in the central nervous system before signs of clinical illness. Using a scrapie mouse model of prion disease to assess various time points postinoculation, we identified 15 unreported genes that were increased in the brains of scrapie-infected mice and were associated with inflammation and/or JAK-STAT activation. Comparison of mice infected with two scrapie strains (22L and RML), which have dissimilar neuropathologies, indicated that the inflammatory responses and gene expression profiles in the brains were similar. Genes that increased prior to clinical signs might be involved in controlling scrapie infection or in facilitating damage to host tissues. We tested the possible role of the endogenous IL-1Ra, which was increased at 70 days p.i. In scrapie-infected mice deficient in or overexpressing IL-1Ra, there was no observable effect on gliosis, PrPres formation, disease tempo, pathology, or expression of inflammatory genes analyzed.

Integrity signals

Registry

Crossref · 10.1128/jvi.02952-14

Cites

99 of 99 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?

  • Several proinflammatory cytokines, including TNF α, IL 1α, and C1qa, are upregulated in the brain during the prion disease course.

    “Several proinflammatory cytokines are upregulated in the brain during the prion disease course including TNF α, IL 1α, and C1qa [46,69,70,71,72,73].”

    From Loss of Homeostatic Microglia Signature in Prion Diseases (2022) · cites this paper as [70]

  • Transcription of several genes encoding DAMP proteins and receptors such as Toll-like receptors or proteins of the complement cascade is increased in the brains of prion-infected mice.

    “In addition to the upregulation of PAMPs in prion diseases, the transcription of several genes encoding damage-associated molecular pattern (DAMP) proteins and receptors such as Toll-like receptors or proteins of the complement cascade are also increased in the brains of prion-infected mice [70,82].”

    From Loss of Homeostatic Microglia Signature in Prion Diseases (2022) · cites this paper as [70]

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Carroll, J. A., Striebel, J. F., Race, B., Phillips, K., & Chesebro, B.
Affiliations
National Institutes of Health (US)
Venue
Journal of Virology
Published
2015-02-15
Volume
89
Issue
4
Pages
2388-2404
ISSN
  • 0022-538X (ISSN-L)
  • 1098-5514
OpenAlex
W2095989144
Cited by
63
References
99
Citations by year
2026: 1 · 2025: 5 · 2024: 3 · 2023: 3 · 2022: 7 · 2021: 7 · 2020: 6 · 2019: 10 · 2018: 7 · 2017: 10 · 2016: 2 · 2015: 2
FWCI
1.91
Type
journal article
Language
en
Open access
Locations
  • Journal of Virology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute of Allergy and Infectious Diseases
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Prion Diseases and Protein Misfolding
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
Keywords
prion disease, scrapie, neuroinflammation, gliosis, JAK/STAT signaling, STAT1, STAT3, interleukin-1 receptor antagonist, differentially expressed genes, protease-resistant prion protein, gene expression profiling
MeSH terms
Animals, Brain, Disease Models, Animal, Female, Gliosis, Inflammation, Mice, Inbred C57BL, Mice, Transgenic, Scrapie, Signal Transduction, Neurodegenerative Diseases, Gene Expression Profiling

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