IL-12, while beneficial, is not essential for the host response to VSV encephalitis

David A. Chesler, Carol Shoshkes Reiss

Research output: Contribution to journalArticle

Abstract

In this report, the role of STAT4 and local production of interleukin (IL)-12 in the central nervous system (CNS) were examined during experimental vesicular stomatitis virus (VSV) encephalitis. We have previously shown that IL-12 treatment is beneficial both in vitro and in vivo during experimental VSV infection. This inhibition of VSV replication was dependent on the production of nitric oxide (NO) by the neuronal isoform of nitric oxide synthase (NOS-1). In vitro, IL-12 induces the phosphorylation and nuclear localization of STAT4 in neuroblastoma cell lines. STAT4 expression was not required for host survival or clearance of virus during experimental VSV encephalitis. Taken together, these data suggest that while neurons can respond directly to IL-12 in vitro by signaling through STAT4, STAT4 is not required for survival. It is likely that redundant innate host inflammatory cytokine responses compensate for the absence of IL-12 signaling.

Original languageEnglish (US)
Pages (from-to)92-97
Number of pages6
JournalJournal of Neuroimmunology
Volume131
Issue number1-2
DOIs
StatePublished - Oct 2002

Keywords

  • Host response
  • IL-12
  • VSV

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology
  • Neurology
  • Clinical Neurology

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