Invariant natural killer T cells act as an extravascular cytotoxic barrier for joint-invading Lyme Borrelia
NAGIOS: RODERIC FUNCIONANDO

Invariant natural killer T cells act as an extravascular cytotoxic barrier for joint-invading Lyme Borrelia

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Invariant natural killer T cells act as an extravascular cytotoxic barrier for joint-invading Lyme Borrelia

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Lee, Woo-Yong; Sanz Ferrando, María Jesús; Wong, Connie H. Y.; Hardy, Pierre-Olivier; Salman-Dilgimen, Aydan; Moriarty, Tara J.; Chaconas, George; Marques, Adriana; Krawetz, Roman; Mody, Christopher H.; Kubes, Paul
This document is a artículoDate2014

Este documento está disponible también en : http://hdl.handle.net/10550/44429
SignificanceInvariant natural killer T cells (iNKT) have been found primarily patrolling inside blood vessels in the liver, where they respond to bacterial glycolipids presented by CD1d on liver macrophages. We show joint iNKT cells are localized outside of blood vessels and respond directly to the joint-homing pathogen, Borrelia burgdorferi, which causes Lyme borreliosis using multichannel spinning-disk intravital microscopy. These iNKT cells interacted with B. burgdorferi at the vessel wall and disrupted its dissemination attempts into joints. Successful penetrance of B. burgdorferi out of the vasculature and into the joint tissue was met by a lethal attack by extravascular iNKT cells through a granzyme-dependent pathway. These results suggest a critical extravascular iNKT cell immune surveillance in joints that functions as a cytotoxic barrier.

    Proceedings of the National Academy of Sciences of the United States of America Vol. 111 Issue 38: pp. 13936-13941

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