alexa Neuronal CXCL10 directs CD8+ T-cell recruitment and control of West Nile virus encephalitis.
Immunology

Immunology

Journal of Clinical & Cellular Immunology

Author(s): Klein RS, Lin E, Zhang B, Luster AD, Tollett J,

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Abstract The activation and entry of antigen-specific CD8(+) T cells into the central nervous system is an essential step towards clearance of West Nile virus (WNV) from infected neurons. The molecular signals responsible for the directed migration of virus-specific T cells and their cellular sources are presently unknown. Here we demonstrate that in response to WNV infection, neurons secrete the chemokine CXCL10, which recruits effector T cells via the chemokine receptor CXCR3. Neutralization or a genetic deficiency of CXCL10 leads to a decrease in CXCR3(+) CD8(+) T-cell trafficking, an increase in viral burden in the brain, and enhanced morbidity and mortality. These data support a new paradigm in chemokine neurobiology, as neurons are not generally considered to generate antiviral immune responses, and CXCL10 may represent a novel neuroprotective agent in response to WNV infection in the central nervous system.
This article was published in J Virol and referenced in Journal of Clinical & Cellular Immunology

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