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Porcine parvovirus infection activates inflammatory cytokine production through Toll-like receptor 9 and NF-kappa B signaling pathways in porcine kidney cells

文献类型: 外文期刊

作者: Zhou, Yong 1 ; Jin, Xiao-hui 1 ; Jing, Ya-xing 2 ; Song, Yue 2 ; He, Xiao-xiang 1 ; Zheng, Lan-Lan 2 ; Wang, Ya-bin 2 ; W 1 ;

作者机构: 1.Henan Agr Univ, Coll Anim Sci & Vet Med, 63 Nongye Rd, Zhengzhou 450002, Henan, Peoples R China

2.Key Lab Animderived Food Safety Henan Prov, Zhengzhou 450002, Henan, Peoples R China

3.Henan Acad Agr Sci, Henan Prov Key Lab Anim Immunol, Minist Agr, Key Lab Anim Immunol, Zhengzhou 450002, Hena

关键词: Porcine parvovirus;IL-6;NF-kappa B signaling pathway;Toll-like receptor

期刊名称:VETERINARY MICROBIOLOGY ( 影响因子:3.293; 五年影响因子:3.599 )

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收录情况: SCI

摘要: Porcine parvovirus virus (PPV) is an animal virus that has caused high economic losses for the swine industry worldwide. Previous studies demonstrated that PPV infection induced significant production of interleukin 6 (IL-6) in vitro and in vivo. However, the inflammatory cytokines and specific signaling pathways induced during PPV infection remain largely unknown. In the present study, we analyzed the expression levels of IL-6 in PPV-infected porcine kidney 15 (PK-15) and the results showed that PPV infection induced the increase of IL-6 mRNA expression in a dose-dependent manner. We also detected the expression of toll-like receptor 9 (TLR9) signaling proteins in the mRNA expressing level, when compared with the control group, the TLR9 expression in mRNA level increased at 24 h in PK-15 cells after PPV infection and reached the peak level at 48 h. In addition, the transcript profile of nuclear factor kappa B (NF-kappa B) signal pathway relating genes (MyD88, IRAK1, TRAF6, TAK1 alpha, I kappa B kappa B and NF-kappa B) expression levels increased at different times. Furthermore, to verify the IL-6 expression was specific with the TLR9 expression and then by activating the NF-kappa B signal pathway, TLR9 and NF-kappa B specific inhibitors were applied during PPV infection, separately, the result indicated that the expression of IL-6 was decreased after inhibitor treatment. Taken together, PPV infection significantly induced IL-6 expression and this induction depended on NF-kappa B activation and TLR9 signaling pathways in PK-15 cell.

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