ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2016, Vol. 47 ›› Issue (3): 536-542.doi: 10.11843/j.issn.0366-6964.2016.03.016

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The Influence of BVDV on Immunophenotype and Th1/Th2 Cytokine Secretion of Bovine Peripheral Blood-derived Dendritic Cells

LIU Jin-ling1,WEI Shu2,ZHAO Yu-jun1,HE Jian-bin1*   

  1. (1.College of Animal Science and Veterinary Medicine,Shenyang Agricultural University,Shenyang 110866,China;2.The Preventive Center of Animal Disease of Liaoning Province,Shenyang 110164,China)
  • Received:2015-05-20 Online:2016-03-23 Published:2016-03-23

Abstract:

The objective of this study was to investigate the influence of BVDV on the cell maturation and cytokine level of Th1 and Th2 type in dendritic cells (DC) derived from bovine peripheral blood,and to further reveal the immune mechanism of BVDV infection.The monocytes from bovine peripheral blood were separated and induced into DCs,and then were co-cultured with BVDV.The cell morphology and the expression of MHCⅡ,CD80 and CD40 on DCs were observed by microscopy and flow cytometry respectively,the semi-quantitative RT-PCR was used to analyze IL-12p40 of Th1 type cytokines and IL-10 of Th2 at mRNA levels.The results showed that DCs had typical morphology and immunophenotype with 93.81% purity.Post BVDV infection,the MHCII molecules,CD40 molecules and CD80 molecules were greatly lower than that of the control groups,the differences were statistically significant (P<0.01). IL-12p40 mRNA level was down-regulated,while IL-10 mRNA level was up-regulated,the differences were significant (P<0.05) compared with the control groups.These results indicated that BVDV infection to DC plays an important role on maturation and regulating the balance of Th1/Th2.

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