Abstract:
:The suppressor of cytokine signaling 1 (SOCS-1) protein is a critical regulator in the immune systems of humans and mammals, which functions classically as an inhibitor of the IFN signaling pathways. However, data on functional characterisation of SOCS-1 in ancient vertebrates are limited. In this study, we report the function of teleost SOCS-1s in IFN signaling in fish models (zebrafish and Tetraodon) and human cells. Structurally, teleost SOCS-1s share conserved functional domains with their mammalian counterparts. Functionally, teleost SOCS-1s could be significantly induced upon stimulation with IFN stimulants and zebrafish IFNφ1. Overexpression of teleost SOCS-1s could dramatically suppress IFNφ1-induced Mx, Viperin and PKZ activation in zebrafish, and IFN-induced ISG15 activation in HeLa cells. Furthermore, a SOCS-1 variant that lacks the KIR domain was also characterised. This study demonstrates the conserved negative regulatory role of teleost SOCS-1s in IFN signaling pathways, providing perspective into the functional conservation of SOCS-1 proteins during evolution.
journal_name
Dev Comp Immunoljournal_title
Developmental and comparative immunologyauthors
Nie L,Xiong R,Zhang YS,Zhu LY,Shao JZ,Xiang LXdoi
10.1016/j.dci.2013.10.007subject
Has Abstractpub_date
2014-03-01 00:00:00pages
23-9issue
1eissn
0145-305Xissn
1879-0089pii
S0145-305X(13)00298-Xjournal_volume
43pub_type
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