ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2017, Vol. 48 ›› Issue (7): 1288-1299.doi: 10.11843/j.issn.0366-6964.2017.07.013

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Analysis of Related Molecular Changes of Innate Immune Signaling Pathway in Porcine Reproductive and Respiratory Syndrome Virus Infected PAMs

LI Hua-wei1,4, CHEN Xin-xin2, ZHAO Meng-meng3, ZHOU En-min1, QIAO Song-lin2*, ZHANG Gai-ping1,2,3*   

  1. 1. College of Veterinary Medicine, Northwest A & F University, Yangling 712100, China;
    2. The Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China;
    3. College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, China;
    4. The Bioengineering Department, Henan University of Animal Husbandry and Economy, Zhengzhou 450046, China
  • Received:2017-01-09 Online:2017-07-23 Published:2017-07-23

Abstract:

This research was conducted to analyze the proteomic dynamic proteins of PRRSV-infected PAMs. In this study, Label-free LC-MS/MS was employed to quantitatively identify the differentially expressed proteins between PRRSV-infected PAMs and uninfected PAMs. Results were as follows:430 significantly altered proteins were identified after PRRSV infection. Among them, 171 proteins were up-regulated, and 259 proteins were down-regulated. These differentially expressed proteins are related to innate immunity, virus response and antigen presentation etc. Interestingly, many upregulated proteins were enriched in NF-κB, MAPK and RIG-1 signal pathway, including STAT1/2, OAS1/2, Mx1/2, ISG15/20, IFIT1/2/3/5; some proteins were enriched in MHCⅠand MHCⅡrelated signal pathways. Real-time quantitative reverse transcription polymerase chain reaction and Western blot analysis verifiedSTAT 1/2, OAS 1/2, CD 14, ISG, Mx1, IFIT genes and Mx1, IFIT3 proteins were significant up-regulated after PRRSV infection which were consistent with LC-MS/MS results. This study may accelerate our understanding of the mechanisms of PRRSV infection.

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