Transcriptomics

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Type I Interferon Dependent Anti-viral Activity


ABSTRACT: Synthetic oligonucleotides (ODN) expressing CpG motifs trigger an innate immune response via TLR9. Multiple microarray analyses were performed to identify the global effects on gene expression of stimulating the CAL-1 human pDC line with different types of CpG ODN. Results show that a subset of genes characterized by shared anti-viral activity was consistently up-regulated by ODNs that otherwise mediate discrete functions. This group of genes was largely dependant on autocrine type I interferon (IFN) signaling, as their induction was blocked by neutralizing antibody targeting the type I IFN receptor. Coupling these experiments with a meta-analysis of other published works led to the identification of a set of 32 functionally conserved genes that was reproducibly activated by different types of CpG DNA in different species and cell types. Functionally, these 'core' genes support a type I IFN response to viral infection, and differ from genes up-regulated by only a single type of CpG ODN. These findings help define the conserved and sequence-specific patterns of gene activation triggered via TLR9 and improve our understanding of the immunomodulatory effects elicited by CpG ODN.

ORGANISM(S): Homo sapiens

PROVIDER: GSE30849 | GEO | 2012/07/01

SECONDARY ACCESSION(S): PRJNA144165

REPOSITORIES: GEO

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