Article (Scientific journals)
Inhibition of cGAS-STING-TBK1 signaling pathway by DP96R of ASFV China 2018/1
Wang, X.; Wu, Jing; Wu, Y. et al.
2018In Biochemical and Biophysical Research Communications, 506 (3), p. 437-443
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Keywords :
ASFV; DP96R; NF-κB; TBK1; Type I IFN; DP96R protein; I kappa B kinase beta; STING protein; TBK1 protein; MB21D1 protein, human; MPYS protein, human; TBK1 protein, human; African swine fever virus; Article; HEK293 cell line; Animals; Genes, Viral; HEK293 Cells; Humans; Interferon-beta; Membrane Proteins; NF-kappa B; Nucleotidyltransferases; Phosphorylation; Protein Domains; Protein-Serine-Threonine Kinases; Signal Transduction; Viral Proteins
Abstract :
[en] African swine fever virus (ASFV) is a highly pathogenic large DNA virus that causes African swine fever (ASF) in domestic pigs and European wild boars with mortality rate up to 100%. The DP96R gene of ASFV encodes one of the viral virulence factors, yet its action mechanism remains unknown. In this study, we report that DP96R of ASFV China 2018/1 strain subverts type I IFN production in cGAS sensing pathway. DP96R inhibited the cGAS/STING, and TBK1 but not IRF3-5D mediated IFN-β and ISRE promoters activation. Furthermore, DP96R selectively blocked the activation of NF-κB promoter induced by cGAS/STING, TBK1, and IKKβ, but not by overexpression of p65. Moreover, DP96R inhibited phosphorylation of TBK1 stimulated by cGAS/STING activation, and TBK1-induced antiviral response. Finally, truncated mutation analysis demonstrated that the region spanning amino acids 30 to 96 of DP96R was responsible for the inhibitory activity. To our knowledge, this is for the first time that DP96R of ASFV China 2018/1 is reported to negatively regulate type I IFN expression and NF-κB signaling by inhibiting both TBK1 and IKKβ, which plays an important role in virus immune evasion. © 2018 Elsevier Inc.
Disciplines :
Veterinary medicine & animal health
Author, co-author :
Wang, X.;  Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
Wu, Jing ;  Université de Liège - ULiège
Wu, Y.;  Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
Chen, H.;  Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, 200241, China
Zhang, S.;  Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, 130000, China
Li, J.;  Chinese Academy of Agricultural Sciences, Beijing, 100081, China
Xin, T.;  Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
Jia, H.;  Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
Hou, S.;  Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
Jiang, Y.;  Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
Zhu, H.;  Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
Guo, X.;  Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
Language :
English
Title :
Inhibition of cGAS-STING-TBK1 signaling pathway by DP96R of ASFV China 2018/1
Publication date :
2018
Journal title :
Biochemical and Biophysical Research Communications
ISSN :
0006-291X
eISSN :
1090-2104
Publisher :
Elsevier, Atlanta, United States - California
Volume :
506
Issue :
3
Pages :
437-443
Peer reviewed :
Peer reviewed
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