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Role of IFN-γ responsiveness in CD8 T cell-mediated viral clearance and demyelination in coronavirus-infected mice
Journal article   Open access   Peer reviewed

Role of IFN-γ responsiveness in CD8 T cell-mediated viral clearance and demyelination in coronavirus-infected mice

Steven P Templeton and Stanley Perlman
Journal of Neuroimmunology, Vol.194(1-2), pp.18-26
02/2008
DOI: 10.1016/j.jneuroim.2007.10.030
PMID: 18082272
url
https://doi.org/10.1016/j.jneuroim.2007.10.030View
Published (Version of record) Open Access

Abstract

Immunocompetent, but not RAG1−/− mice infected with MHV–JHM develop demyelination. Transferred CD8 T cell-enriched splenocytes reconstitute demyelination, and this ability is dependent on donor IFN-γ. We used IFN-γR1−/− mice to examine the target of IFN-γ in CD8 T cell-mediated demyelination. In IFN-γR1−/−RAG1−/− recipients, demyelination is decreased, but not eliminated, while viral titers are significantly increased when compared to IFN-γR1+/+RAG1−/− recipients. IFN-γR1−/− CD8 T cells retain virus-specific effector function regardless of IFN-γR1 expression. Although IFN-γR1 responsiveness is critical for maximal demyelination, increased levels of infectious virus coupled with adoptive transfer of CD8 T cells may result in myelin destruction independent of IFN-γR1 expression.
IFN-gamma Demyelination Viral infection CD8 T cells

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