Myelomonocytic cell recruitment causes fatal CNS vascular injury during acute viral meningitis

Jiyun V. Kim, Silvia S. Kang, Michael L. Dustin, Dorian B. McGavern

Research output: Contribution to journalArticlepeer-review

235 Scopus citations

Abstract

Lymphocytic choriomeningitis virus infection of the mouse central nervous system (CNS) elicits fatal immunopathology through blood-brain barrier breakdown and convulsive seizures. Although lymphocytic-choriomeningitis-virus-specific cytotoxic T lymphocytes (CTLs) are essential for disease, their mechanism of action is not known. To gain insights into disease pathogenesis, we observed the dynamics of immune cells in the meninges by two-photon microscopy. Here we report visualization of motile CTLs and massive secondary recruitment of pathogenic monocytes and neutrophils that were required for vascular leakage and acute lethality. CTLs expressed multiple chemoattractants capable of recruiting myelomonocytic cells. We conclude that a CD8+ T-cell-dependent disorder can proceed in the absence of direct T-cell effector mechanisms and rely instead on CTL-recruited myelomonocytic cells.

Original languageEnglish (US)
Pages (from-to)191-195
Number of pages5
JournalNature
Volume457
Issue number7226
DOIs
StatePublished - Jan 8 2009

ASJC Scopus subject areas

  • General

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