Cited by 45Prion Diseases and Protein MisfoldingNeuroinflammation and Neurodegeneration MechanismsAlzheimer's disease research and treatments

Accelerated Prion Replication in, but Prolonged Survival Times of, Prion-Infected CXCR3−/−Mice

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Riemer, Constanze, Schultz, Julia, Burwinkel, Michael, Schwarz, Anja, Mok, Simon W. F., Gültner, Sandra, Bamme, Theresa, Norley, Stephen +4 more·2008·Journal of Virology

Abstract

Prion diseases have a significant inflammatory component. Glia activation, which is associated with increased production of cytokines and chemokines, may play an important role in disease development. Among the chemokines upregulated highly and early upregulated during scrapie infections are ligands of CXCR3. To gain more insight into the role of CXCR3 in a prion model, CXCR3-deficient (CXCR3−/−) mice were infected intracerebrally with scrapie strain 139A and characterized in comparison to similarly infected wild-type controls. CXCR3−/−mice showed significantly prolonged survival times of up to 30 days on average. Surprisingly, however, they displayed accelerated accumulation of misfolded proteinase K-resistant prion protein PrP Sc and 20 times higher infectious prion titers than wild-type mice at the asymptomatic stage of the disease, indicating that these PrP isoforms may not be critical determinants of survival times. As demonstrated by immunohistochemistry, Western blotting, and gene expression analysis, CXCR3-deficient animals develop an excessive astrocytosis. However, microglia activation is reduced. Quantitative analysis of gliosis-associated gene expression alterations demonstrated reduced mRNA levels for a number of proinflammatory factors in CXCR3−/−compared to wild-type mice, indicating a weaker inflammatory response in the knockout mice. Taken together, this murine prion model identifies CXCR3 as disease-modifying host factor and indicates that inflammatory glial responses may act in concert with PrP Sc in disease development. Moreover, the results indicate that targeting CXCR3 for treatment of prion infections could prolong survival times, but the results also raise the concern that impairment of microglial migration by ablation or inhibition of CXCR3 could result in increased accumulation of misfolded PrP Sc.

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Crossref · 10.1128/jvi.01371-08

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  • CXCR3 knockout mice develop excessive astrocytosis.

    “Moreover, these mice developed excessive astrocytosis.”

    From Loss of Homeostatic Microglia Signature in Prion Diseases (2022) · cites this paper as [76]

  • Knockout of CXCR3 leads to accelerated PrPSc accumulation and increased prion infectivity titers, but prolonged survival in the mouse model.

    “In line with the proposed capacity of microglia to phagocytose PrPSc, the knockout of C-X-C chemokine receptor type 3 (CXCR3) led to accelerated PrPSc accumulation and increased prion infectivity titers, but prolonged survival in the mouse model [76].”

    From Loss of Homeostatic Microglia Signature in Prion Diseases (2022) · cites this paper as [76]

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Research works printed but not linked: 2

  1. [2]Beringue, V., M. Demoy, C. I. Lasmezas, B. Gouritin, C. Weingarten, J. P. Deslys, J. P. Andreux, P. Couvreur, and D. Dormont. 2000. Role of spleen macrophages in the clearance of scrapie agent early in pathogenesis. J. Pathol. 190495-502. [DOI] [PubMed] [Google Scholar]
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Authors
Riemer, C., Schultz, J., Burwinkel, M., Schwarz, A., Mok, S. W. F., Gültner, S., Bamme, T., Norley, S., van Landeghem, F., Lu, B., Gerard, C., & Baier, M.
Affiliations
  • Robert Koch Institute (DE)
  • Project Neurodegenerative Diseases, Robert-Koch-Institut, Nordufer 20, 13353 Berlin, Germany
  • Institute of Neuropathology, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany
  • Boston Children's Hospital (US)
Venue
Journal of Virology
Published
2008-12-15
Volume
82
Issue
24
Pages
12464-12471
ISSN
  • 0022-538X (ISSN-L)
  • 1098-5514
OpenAlex
W1975349024
Cited by
45
References
76
Citations by year
2025: 1 · 2024: 2 · 2023: 2 · 2022: 3 · 2021: 1 · 2020: 3 · 2019: 4 · 2018: 4 · 2017: 2 · 2016: 5 · 2014: 3 · 2013: 2 · 2012: 4
FWCI
1.23
Type
journal article
Language
en
Open access
Locations
  • Journal of Virology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
European Commission (LSHB-CT-2006-019090)
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, CXCR3, chemokines, prion replication, survival time, astrocyte activation, microglial activation, glial inflammation, prion protein, pro-inflammatory gene expression
MeSH terms
Animals, Gene Expression Regulation, Gliosis, Time Factors, Biomarkers, Survival Rate, Prion Diseases, Microglia, Mice, Knockout, Mice, Receptors, CXCR3

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