Abstract:
:Type I interferon (IFN) induces the antiviral response in innate immunity. The type I IFN gene cloned from Japanese flounder (Paralichthys olivaceus) has a length of 1189 bp and consisting of 5 exons and 4 introns. In a phylogenetic tree of type I IFNs, Japanese flounder grouped with other Acanthopterygii. To gain insight into the transcriptional regulation of IFN gene, the 1.36 kb 5'-upstream region including numerous canonical motifs to bind transcription factors [for example, IFN regulatory factor (IRF)] was analyzed. In HINAE cells using a luciferase reporter assay, poly I:C-responsive transcriptional activity was found in the region from -634 to -179 bp. This region includes several IRF motifs. In the presence of poly I:C, overexpression of IRF3 and RLR strongly enhanced transcriptional activity. These results suggest that the transcriptional regulation of Japanese flounder type I IFN is regulated by IRF3 after triggering with dsRNA sensors.
journal_name
Dev Comp Immunoljournal_title
Developmental and comparative immunologyauthors
Ohtani M,Hikima J,Hwang SD,Morita T,Suzuki Y,Kato G,Kondo H,Hirono I,Jung TS,Aoki Tdoi
10.1016/j.dci.2011.10.008subject
Has Abstractpub_date
2012-04-01 00:00:00pages
697-706issue
4eissn
0145-305Xissn
1879-0089pii
S0145-305X(11)00292-8journal_volume
36pub_type
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