Murine Norovirus (MNV) infection results in anti-inflammatory response downstream of amino acids depletion in macrophages.

ABSTRACT: Purpose: Characterisation of MNV induced host genetic reprogramming and translational control exerted over the host response by comparison of available cytoplasmic transcripts and their association with polysomes. Results: RNaseq data showed an inadequate response to MNV infection downstream of MDA5 activation coupled with a cellular response to a metabolic stress. In particular, all 296 significantly regulated transcripts showed a strong correlation between a transcript availability in the cytoplasm and its recrutment to the polysomal fraction as addressed using the R package 'Anota2seq'. Genome annotation analyses using Cytoscape highlighted the host response to the viral infection but showed a cluster of genes involved in response to stress and the related intrinsic apoptotic pathways suggesting a prevalence of a metabolic stress response over the innate immune response to the viral replication. Conclusions: Our study provides the first understanding analysis of the host response to MNV at the level of available cytoplasmic mRNA and their recruitment to the actively translating fractions. It described an absence of translational control over the host innate immune response but highlight and inadequate NF-kB response correlating with an ectopic anti-inflammatory response to amino acid starvation.

ORGANISM(S): Mus musculus

PROVIDER: GSE168402 | GEO | 2021/07/14

REPOSITORIES: GEO