The Interaction of Mandarin Fish DDX41 with STING Evokes type I Interferon Responses Inhibiting Ranavirus Replication

DDX41 is an intracellular DNA sensor that evokes type I interferon (IFN-I) production via the adaptor stimulator of interferon gene (STING), triggering innate immune responses against viral infection. However, the regulatory mechanism of the DDX41-STING pathway in teleost fish remains unclear. The m...

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Main Authors: Xiao-Wei Qin, Zhi-Yong Luo, Wei-Qiang Pan, Jian He, Zhi-Min Li, Yang Yu, Chang Liu, Shao-Ping Weng, Jian-Guo He, Chang-Jun Guo
Format: Article
Language:English
Published: MDPI AG 2022-12-01
Series:Viruses
Subjects:
Online Access:https://www.mdpi.com/1999-4915/15/1/58
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author Xiao-Wei Qin
Zhi-Yong Luo
Wei-Qiang Pan
Jian He
Zhi-Min Li
Yang Yu
Chang Liu
Shao-Ping Weng
Jian-Guo He
Chang-Jun Guo
author_facet Xiao-Wei Qin
Zhi-Yong Luo
Wei-Qiang Pan
Jian He
Zhi-Min Li
Yang Yu
Chang Liu
Shao-Ping Weng
Jian-Guo He
Chang-Jun Guo
author_sort Xiao-Wei Qin
collection DOAJ
description DDX41 is an intracellular DNA sensor that evokes type I interferon (IFN-I) production via the adaptor stimulator of interferon gene (STING), triggering innate immune responses against viral infection. However, the regulatory mechanism of the DDX41-STING pathway in teleost fish remains unclear. The mandarin fish (<i>Siniperca chuatsi</i>) is a cultured freshwater fish species that is popular in China because of its high market value. With the development of a high-density cultural mode in mandarin fish, viral diseases have increased and seriously restricted the development of aquaculture, such as ranavirus and rhabdovirus. Herein, the role of mandarin fish DDX41 (<i>sc</i>DDX41) and its DEAD and HELIC domains in the antiviral innate immune response were investigated. The level of <i>sc</i>DDX41 expression was up-regulated following treatment with poly(dA:dT) or Mandarin fish ranavirus (MRV), suggesting that <i>sc</i>DDX41 might be involved in fish innate immunity. The overexpression of <i>sc</i>DDX41 significantly increased the expression levels of IFN-I, ISGs, and pro-inflammatory cytokine genes. Co-immunoprecipitation and pull-down assays showed that the DEAD domain of <i>sc</i>DDX41 recognized the IFN stimulatory DNA and interacted with STING to activate IFN-I signaling pathway. Interestingly, the HELIC domain of <i>sc</i>DDX41 could directly interact with the N-terminal of STING to induce the expression levels of <i>IFN-I</i> and <i>ISGs</i> genes. Furthermore, the <i>sc</i>DDX41 could enhance the <i>sc</i>STING-induced IFN-I immune response and significantly inhibit MRV replication. Our work would be beneficial to understand the roles of teleost fish DDX41 in the antiviral innate immune response.
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spelling doaj.art-16ae40dc423d4f70ac6c53f0eef4cf702023-12-01T01:07:31ZengMDPI AGViruses1999-49152022-12-011515810.3390/v15010058The Interaction of Mandarin Fish DDX41 with STING Evokes type I Interferon Responses Inhibiting Ranavirus ReplicationXiao-Wei Qin0Zhi-Yong Luo1Wei-Qiang Pan2Jian He3Zhi-Min Li4Yang Yu5Chang Liu6Shao-Ping Weng7Jian-Guo He8Chang-Jun Guo9State Key Laboratory for Biocontrol & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Marine Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, ChinaState Key Laboratory for Biocontrol & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Marine Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, ChinaState Key Laboratory for Biocontrol & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Marine Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, ChinaState Key Laboratory for Biocontrol & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Marine Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, ChinaState Key Laboratory for Biocontrol & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Marine Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, ChinaState Key Laboratory for Biocontrol & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Marine Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, ChinaState Key Laboratory for Biocontrol & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Marine Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, ChinaGuangdong Province Key Laboratory for Aquatic Economic Animals, and Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, ChinaState Key Laboratory for Biocontrol & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Marine Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, ChinaState Key Laboratory for Biocontrol & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Marine Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou 510275, ChinaDDX41 is an intracellular DNA sensor that evokes type I interferon (IFN-I) production via the adaptor stimulator of interferon gene (STING), triggering innate immune responses against viral infection. However, the regulatory mechanism of the DDX41-STING pathway in teleost fish remains unclear. The mandarin fish (<i>Siniperca chuatsi</i>) is a cultured freshwater fish species that is popular in China because of its high market value. With the development of a high-density cultural mode in mandarin fish, viral diseases have increased and seriously restricted the development of aquaculture, such as ranavirus and rhabdovirus. Herein, the role of mandarin fish DDX41 (<i>sc</i>DDX41) and its DEAD and HELIC domains in the antiviral innate immune response were investigated. The level of <i>sc</i>DDX41 expression was up-regulated following treatment with poly(dA:dT) or Mandarin fish ranavirus (MRV), suggesting that <i>sc</i>DDX41 might be involved in fish innate immunity. The overexpression of <i>sc</i>DDX41 significantly increased the expression levels of IFN-I, ISGs, and pro-inflammatory cytokine genes. Co-immunoprecipitation and pull-down assays showed that the DEAD domain of <i>sc</i>DDX41 recognized the IFN stimulatory DNA and interacted with STING to activate IFN-I signaling pathway. Interestingly, the HELIC domain of <i>sc</i>DDX41 could directly interact with the N-terminal of STING to induce the expression levels of <i>IFN-I</i> and <i>ISGs</i> genes. Furthermore, the <i>sc</i>DDX41 could enhance the <i>sc</i>STING-induced IFN-I immune response and significantly inhibit MRV replication. Our work would be beneficial to understand the roles of teleost fish DDX41 in the antiviral innate immune response.https://www.mdpi.com/1999-4915/15/1/58DDX41STINGranavirusinterferoninnate immunemandarin fish
spellingShingle Xiao-Wei Qin
Zhi-Yong Luo
Wei-Qiang Pan
Jian He
Zhi-Min Li
Yang Yu
Chang Liu
Shao-Ping Weng
Jian-Guo He
Chang-Jun Guo
The Interaction of Mandarin Fish DDX41 with STING Evokes type I Interferon Responses Inhibiting Ranavirus Replication
Viruses
DDX41
STING
ranavirus
interferon
innate immune
mandarin fish
title The Interaction of Mandarin Fish DDX41 with STING Evokes type I Interferon Responses Inhibiting Ranavirus Replication
title_full The Interaction of Mandarin Fish DDX41 with STING Evokes type I Interferon Responses Inhibiting Ranavirus Replication
title_fullStr The Interaction of Mandarin Fish DDX41 with STING Evokes type I Interferon Responses Inhibiting Ranavirus Replication
title_full_unstemmed The Interaction of Mandarin Fish DDX41 with STING Evokes type I Interferon Responses Inhibiting Ranavirus Replication
title_short The Interaction of Mandarin Fish DDX41 with STING Evokes type I Interferon Responses Inhibiting Ranavirus Replication
title_sort interaction of mandarin fish ddx41 with sting evokes type i interferon responses inhibiting ranavirus replication
topic DDX41
STING
ranavirus
interferon
innate immune
mandarin fish
url https://www.mdpi.com/1999-4915/15/1/58
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