Functional, signalling and transcriptional differences of three distinct type I IFNs in a perciform fish, the mandarin fish Siniperca chuatsi

Teleost fish are unique in having type I and type II interferons (IFNs) only, and the type I IFNs are classified into Group one and Group two based on the presence of two or four cysteines respectively, and are further classified into seven subgroups. In the present study, three distinct type I IFNs...

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Bibliographic Details
Published in:Developmental & Comparative Immunology
Main Authors: Laghari, Zubair Ahmed, Chen, Shan Nan, Li, Li, Huang, Bei, Gan, Zhen, Zhou, Ying, Huo, Hui Jun, Hou, Jing, Nie, Pin
Format: Report
Language:English
Published: ELSEVIER SCI LTD 2018
Subjects:
Type I IFN
Cytokine receptor family B
CRFB
STAT1
STAT2
IRF3
IRF7
Teleost fish
Fisheries
Immunology
Zoology
KIDNEY NECROSIS VIRUS
INTERFERON REGULATORY FACTOR-3
CROAKER LARIMICHTHYS-CROCEA
INFECTIOUS SPLEEN
ATLANTIC SALMON
PARALICHTHYS-OLIVACEUS
JAPANESE FLOUNDER
ANTIVIRAL ACTIVITY
ORYZIAS-LATIPES
GENE-EXPRESSION
Atlantic salmon
Online Access:http://ir.ihb.ac.cn/handle/342005/30343
http://ir.ihb.ac.cn/handle/342005/30344
https://doi.org/10.1016/j.dci.2018.02.008
Description
Summary:Teleost fish are unique in having type I and type II interferons (IFNs) only, and the type I IFNs are classified into Group one and Group two based on the presence of two or four cysteines respectively, and are further classified into seven subgroups. In the present study, three distinct type I IFNs, IFNc, IFNd and IFNh, have been identified in the genome sequences of a perciform fish, the mandarin fish Siniperca chuatsi. These IFNs are induced following the stimulation of Polyinosinic polycytidylic acid (poly(I: C)) and Resiquimod (R848) either in vivo or in vitro. But, the infectious spleen and kidney necrosis virus (ISKNV) infection caused a delayed response of IFNs, which may be resulted from the viral inhibition of type I IFN production and related signalling. The three receptor subunits, cytokine receptor family B 1 (CRFB1), CRFB2 and CRFB5 are also expressed in a similar manner as observed for the IFNs, and IFNc, IFNd and IFNh use preferentially the receptor complex, CRFB2 and CRFB5, CRFB1 and CRFB5, CRFB1 and CRFB5 respectively for their effective signalling in the induction of IFN-stimulated genes (ISGs). Moreover, the IFNs are able to induce their own expression, and also the IRF3 and IRF7 expression, leading to the amplification of IFN cascade. It is further revealed that these three IFNs are transcribed differently by IRF7 and IRF3. The composition, function, signalling and transcription of type I IFNs have been investigated in detail in a teleost fish. (C) 2018 Elsevier Ltd. All rights reserved.

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