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Splenic differentiation and emergence of CCR5+CXCL9+CXCL10+ monocyte-derived dendritic cells in the brain during cerebral malaria.


ABSTRACT: Dendritic cells have an important role in immune surveillance. After being exposed to microbial components, they migrate to secondary lymphoid organs and activate T lymphocytes. Here we show that during mouse malaria, splenic inflammatory monocytes differentiate into monocyte-derived dendritic cells (MO-DCs), which are CD11b+F4/80+CD11c+MHCIIhighDC-SIGNhighLy6c+ and express high levels of CCR5, CXCL9 and CXCL10 (CCR5+CXCL9/10+ MO-DCs). We propose that malaria-induced splenic MO-DCs take a reverse migratory route. After differentiation in the spleen, CCR5+CXCL9/10+ MO-DCs traffic to the brain in a CCR2-independent, CCR5-dependent manner, where they amplify the influx of CD8+ T lymphocytes, leading to a lethal neuropathological syndrome.

SUBMITTER: Hirako IC 

PROVIDER: S-EPMC5097164 | biostudies-literature | 2016 Nov

REPOSITORIES: biostudies-literature

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Splenic differentiation and emergence of CCR5<sup>+</sup>CXCL9<sup>+</sup>CXCL10<sup>+</sup> monocyte-derived dendritic cells in the brain during cerebral malaria.

Hirako Isabella C IC   Ataide Marco A MA   Faustino Lucas L   Assis Patricia A PA   Sorensen Elizabeth W EW   Ueta Hisashi H   Araújo Natalia M NM   Menezes Gustavo B GB   Luster Andrew D AD   Gazzinelli Ricardo T RT  

Nature communications 20161103


Dendritic cells have an important role in immune surveillance. After being exposed to microbial components, they migrate to secondary lymphoid organs and activate T lymphocytes. Here we show that during mouse malaria, splenic inflammatory monocytes differentiate into monocyte-derived dendritic cells (MO-DCs), which are CD11b<sup>+</sup>F4/80<sup>+</sup>CD11c<sup>+</sup>MHCII<sup>high</sup>DC-SIGN<sup>high</sup>Ly6c<sup>+</sup> and express high levels of CCR5, CXCL9 and CXCL10 (CCR5<sup>+</sup>CX  ...[more]

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