Transcriptomics

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A systems approach reveals MAVS signaling in myeloid cells as critical in resistance to Ebola virus in murine models of infection


ABSTRACT: The unprecedented 2013-16 outbreak of Ebola virus (EBOV) in West Africa resulted in over 11,300 human deaths. Host resistance to EBOV is thought to involve RIG-I-like receptor (RLR) signaling through the adaptor protein, mitochondrial antiviral signaling (MAVS), but role of RLR-MAVS in orchestrating anti-EBOV responses in vivo is not known. Here, we apply a systems approach to MAVS-deficient mice infected with either wild-type or mouse-adapted EBOV. MAVS controlled EBOV replication through expression of IFNα, IFN-stimulated genes, and regulation of inflammatory responses in the spleen, and prevented cell death in the liver, with macrophages implicated as a major cell-type influencing host resistance. A dominant role for RLR signaling in macrophages was confirmed following conditional deletion of MAVS in LysM+ myeloid cells. These findings reveal tissue-specific transcriptional pathways controlled by RLR signaling in resistance to EBOV, and suggest that EBOV adaptation to cause disease in mice is linked in part to increased antagonism of RLR-dependent signaling.

ORGANISM(S): Mus musculus

PROVIDER: GSE83309 | GEO | 2016/12/31

SECONDARY ACCESSION(S): PRJNA325529

REPOSITORIES: GEO

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