Cutting edge: nucleotide-binding oligomerization domain 1-dependent responses account for murine resistance against Trypanosoma cruzi infection - PubMed (original) (raw)
. 2010 Feb 1;184(3):1148-52.
doi: 10.4049/jimmunol.0902254. Epub 2009 Dec 30.
Affiliations
- PMID: 20042586
- DOI: 10.4049/jimmunol.0902254
Cutting edge: nucleotide-binding oligomerization domain 1-dependent responses account for murine resistance against Trypanosoma cruzi infection
Grace K Silva et al. J Immunol. 2010.
Abstract
An effective innate immune recognition of the intracellular protozoan parasite Trypanosoma cruzi is critical for host resistance against Chagas disease, a severe and chronic illness that affects millions of people in Latin America. In this study, we evaluated the participation of nucleotide-binding oligomerization domain (Nod)-like receptor proteins in host response to T. cruzi infection and found that Nod1-dependent, but not Nod2-dependent, responses are required for host resistance against infection. Bone marrow-derived macrophages from Nod1(-/-) mice showed an impaired induction of NF-kappaB-dependent products in response to infection and failed to restrict T. cruzi infection in presence of IFN-gamma. Despite normal cytokine production in the sera, Nod1(-/-) mice were highly susceptible to T. cruzi infection, in a similar manner to MyD88(-/-) and NO synthase 2(-/-) mice. These studies indicate that Nod1-dependent responses account for host resistance against T. cruzi infection by mechanisms independent of cytokine production.
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