title: Quantitative proteomic analysis reveals that transmissible gastroenteritis virus activates the JAK-STAT1 signaling pathway.
abstract: Transmissible gastroenteritis virus (TGEV), a porcine enteropathogenic coronavirus, causes lethal watery diarrhea and severe dehydration in piglets. In this study, liquid chromatography-tandem mass spectrometry coupled to isobaric tags for relative and absolute quantification labeling was used to quantitatively identify differentially expressed cellular proteins after TGEV infection in PK-15 cells. In total, 162 differentially expressed cellular proteins were identified, including 60 upregulated proteins and 102 downregulated proteins. These differentially expressed proteins were involved in the cell cycle, cellular growth and proliferation, the innate immune response, etc. Interestingly, many upregulated proteins were associated with interferon signaling, especially signal transducer and activator of transcription 1 (STAT1) and interferon-stimulated genes (ISGs). Immunoblotting and real-time quantitative reverse transcription polymerase chain reaction demonstrated that TGEV infection induces STAT1 phosphorylation and nuclear translocation, as well as ISG expression. This study for the first time reveals that TGEV induces interferon signaling from the point of proteomic analysis.
authors.affiliation: Division of Animal Infectious Diseases, State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University , Wuhan, Hubei China.
authors.forename: Kang
authors.initials: K
authors.lastname: An
authors.forename: Liurong
authors.initials: L
authors.lastname: Fang
authors.forename: Rui
authors.initials: R
authors.lastname: Luo
authors.forename: Dang
authors.initials: D
authors.lastname: Wang
authors.forename: Lilan
authors.initials: L
authors.lastname: Xie
authors.forename: Jing
authors.initials: J
authors.lastname: Yang
authors.forename: Huanchun
authors.initials: H
authors.lastname: Chen
authors.forename: Shaobo
authors.initials: S
authors.lastname: Xiao
mesh_terms: D000818:Animals; D015153:Blotting, Western; D002460:Cell Line; D002853:Chromatography, Liquid; D015870:Gene Expression; D054884:Host-Pathogen Interactions; D053612:Janus Kinases / Q000235:genetics / Q000378:metabolism*; D007668:Kidney / Q000166:cytology / Q000378:metabolism / Q000821:virology; D018613:Microscopy, Confocal; D010766:Phosphorylation; D020543:Proteome / Q000032:analysis* / Q000235:genetics / Q000378:metabolism; D040901:Proteomics / Q000379:methods*; D020133:Reverse Transcriptase Polymerase Chain Reaction; D050794:STAT1 Transcription Factor / Q000235:genetics / Q000378:metabolism*; D015398:Signal Transduction; D013552:Swine; D053719:Tandem Mass Spectrometry; D005760:Transmissible gastroenteritis virus / Q000254:growth & development* / Q000502:physiology
chemical_list: D020543:Proteome; D050794:STAT1 Transcription Factor; D053612:Janus Kinases
keywords: interferon signaling; isobaric tags for relative and absolute quantitation (iTRAQ); proteomics; transmissible gastroenteritis virus (TGEV)