Fish Suppressors of Cytokine Signaling (SOCS): Gene Discovery, Modulation of Expression and Function

Tiehui Wang, Bartolomeo Gorgoglione, Tanja Maehr, Jason W Holland, Jose L González Vecino, Simon Wadsworth, Christopher J Secombes

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Abstract

The intracellular suppressors of cytokine signaling (SOCS) family members, including CISH and SOCS1 to 7 in mammals, are important regulators of cytokine signaling pathways. So far, the orthologues of all the eight mammalian SOCS members have been identified in fish, with several of them having multiple copies. Whilst fish CISH, SOCS3, and SOCS5 paralogues are possibly the result of the fish-specific whole genome duplication event, gene duplication or lineage-specific genome duplication may also contribute to some paralogues, as with the three trout SOCS2s and three zebrafish SOCS5s. Fish SOCS genes are broadly expressed and also show species-specific expression patterns. They can be upregulated by cytokines, such as IFN-γ, TNF-α, IL-1β, IL-6, and IL-21, by immune stimulants such as LPS, poly I:C, and PMA, as well as by viral, bacterial, and parasitic infections in member- and species-dependent manners. Initial functional studies demonstrate conserved mechanisms of fish SOCS action via JAK/STAT pathways.
Original languageEnglish
Article number905813
Number of pages20
JournalJournal of signal transduction
Volume2011
DOIs
Publication statusPublished - 2011

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