behavior of neutrophil granulocytes during toxoplasma gondii infection in the central nervous system

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ID: 129519
2017
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Abstract
Cerebral toxoplasmosis is characterized by activation of brain resident cells and recruitment of specific immune cell subsets from the periphery to the central nervous system (CNS). Our studies revealed that the rapidly invaded Ly6G+ neutrophil granulocytes are an early non-lymphoid source of interferon-gamma (IFN-γ), the cytokine known to be the major mediator of host resistance to Toxoplasma gondii (T. gondii). Upon selective depletion of Ly6G+ neutrophils, we detected reduced IFN-γ production and increased parasite burden in the CNS. Ablation of Ly6G+ cells resulted in diminished recruitment of Ly6Chi monocytes into the CNS, indicating a pronounced interplay. Additionally, we identified infiltrated Ly6G+ neutrophils to be a heterogeneous population. The Ly6G+CD62-LhiCXCR4+ subset released cathelicidin-related antimicrobial peptide (CRAMP), which can promote monocyte dynamics. On the other hand, the Ly6G+CD62-LloCXCR4+ subset produced IFN-γ to establish early inflammatory response. Collectively, our findings revealed that the recruited Ly6G+CXCR4+ neutrophil granulocytes display a heterogeneity in the CNS with a repertoire of effector functions crucial in parasite control and immune regulation upon experimental cerebral toxoplasmosis.
Reference Key
biswas2017frontiersbehavior Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Aindrila Biswas;Timothy French;Henning P. Düsedau;Nancy Mueller;Monika Riek-Burchardt;Anne Dudeck;Ute Bank;Thomas Schüler;Ildiko Rita Dunay
Journal electronic physician
Year 2017
DOI
10.3389/fcimb.2017.00259
URL
http://journal.frontiersin.org/article/10.3389/fcimb.2017.00259/full
Keywords
neuroinflammation toxoplasma gondii

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