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Viral induction of central nervous system innate immune responses

Academic Article
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Overview

authors

  • Rempel, J. D.
  • Quina, L. A.
  • Blakely-Gonzales, P. K.
  • Buchmeier, M. J.
  • Gruol, Donna

publication date

  • April 2005

journal

  • Journal of Virology  Journal

abstract

  • The ability of the central nervous system (CNS) to generate innate immune responses was investigated in an in vitro model of CNS infection. Cultures containing CNS cells were infected with mouse hepatitis virus-JHM, which causes fatal encephalitis in mice. Immunostaining indicated that viral infection had a limited effect on culture characteristics, overall cell survival, or cell morphology at the early postinfection times studied. Results from Affymetrix gene array analysis, assessed on RNA isolated from virally and sham-infected cultures, were compared with parallel protein assays for cytokine, chemokine, and cell surface markers. Of the 126 transcripts found to be differentially expressed between viral and sham infections, the majority were related to immunological responses. Virally induced increases in interleukin-6 and tumor necrosis factor alpha mRNA and protein expression correlated with the genomic induction of acute-phase proteins. Genomic and protein analysis indicated that viral infection resulted in prominent expression of neutrophil and macrophage chemotactic proteins. In addition, mRNA expression of nonclassical class I molecules H2-T10, -T17, -M2, and -Q10, were enhanced three- to fivefold in virus-infected cells compared to sham-infected cells. Thus, upon infection, resident brain cells induced a breadth of innate immune responses that could be vital in directing the outcome of the infection and, in vivo, would provide signals which would summon the peripheral immune system to respond to the infection. Further understanding of how these innate responses participate in immune protection or immunopathology in the CNS will be critical in efforts to intervene in severe encephalitis.

subject areas

  • Animals
  • Antigens, Surface
  • Cells, Cultured
  • Cerebellum
  • Chemokines
  • Cytokines
  • Gene Expression Profiling
  • Histocompatibility Antigens Class II
  • Immunity, Innate
  • Interleukin-6
  • Mice
  • Murine hepatitis virus
  • Neuroglia
  • Neurons
  • Oligonucleotide Array Sequence Analysis
  • RNA, Messenger
  • Tumor Necrosis Factor-alpha
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Identity

International Standard Serial Number (ISSN)

  • 0022-538X

Digital Object Identifier (DOI)

  • 10.1128/jvi.79.7.4369-4381.2005

PubMed ID

  • 15767437
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Additional Document Info

start page

  • 4369

end page

  • 4381

volume

  • 79

issue

  • 7

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