Journal
IMMUNOBIOLOGY
Volume 218, Issue 6, Pages 910-923Publisher
ELSEVIER GMBH
DOI: 10.1016/j.imbio.2012.10.005
Keywords
Trypanosoma cruzi; Mice; Cytokines; Macrophages; Intracellular parasite
Categories
Funding
- Cluster of Excellence Inflammation-at-Interfaces [EXC306]
- MRC [G0700163] Funding Source: UKRI
- Medical Research Council [G0700163] Funding Source: researchfish
Ask authors/readers for more resources
The contribution of the IL-23-IL-17A pathway to resistance against extracellular bacterial infections is well established, whereas its role in immunity to intracellular pathogens is much less clear. To analyze the contribution of the IL-23-IL-17A-axis to resistance against Trypanosoma cruzi infection, we infected IL-23p19(-/-) mice and IL-17A(-/-) mice with T. cruzi. Both mouse strains were susceptible to T. cruzi infection despite strong Th1 immune responses. In vitro experiments revealed that IL-17A, but not IL-23, directly stimulates macrophages to internalize T. cruzi parasites by phagocytosis, which is in contrast to the active invasion process normally used by T. cruzi. In contrast to the active entry of parasites into macrophages, the IL-17A-driven phagocytosis prolonged residency of parasites in the endosomal/lysosomal compartment of the macrophage, which subsequently led to eradication of parasites. This IL-17A-dependent mechanism represents a novel function of IL-17A trapping pathogens in endosomal/lysosomal compartments and enhancing exposure time to antimicrobial effectors of the macrophage. (C) 2012 Elsevier GmbH. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available