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XBP1s cutnrun


ABSTRACT: The unfolded protein response (UPR) has emerged as important signaling pathway mediating anti-viral defenses to Respiratory Syncytial Virus (RSV) infection. In this study, we examine how Inositol Requiring Enzyme (IREa X-Box Binding Protein spliced (XBP1s) arm of the Unfolded Protein Response (UPR) pathway controls the innate response integrating RNA-seq and Cleavage Under Targets and Release Using Nuclease (CUT&RUN) analyses. XBP1s binds to ~4.2 K high-confidence genomic binding sites. Surprisingly these map to only a small subset of IL10/cytokine genes. We further find that that RSV infection enhances XBP1s occupancy on 786 genomic sites enriched in AP1/Fra-1, RELA and SP1 binding sites controlling a core subset of cytokine regulatory factors genes including IFN response factor 1 (IRF1), CSF2, NFKB1A and DUSP10. Selective IRF1 knockdown experiments demonstrates its requirement in control of type I and -III IFNs and IFN-stimulated genes (ISGs) indicating these genes are indirectly regulated through IRF1 transactivation. We conclude that RSV modulates the XBP1 binding complex to the IRF1 epromoter, providing novel insight into how the IRE1-XBP1s pathway potentiates airway mucosal anti-viral responses.

ORGANISM(S): Homo sapiens

PROVIDER: GSE228328 | GEO | 2023/04/30

REPOSITORIES: GEO

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