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P38 mitogen-activated protein kinase promotes Wnt/beta-catenin signaling by impeding Dickkofp-1 expression during Haemophilus parasuis infection

文献类型: 外文期刊

作者: Hua, Kexin 1 ; Gong, Huimin 1 ; Xu, Qingrong 1 ; Li, Tingting 4 ; Ma, Bin 1 ; Li, Yangjie 1 ; He, Rongrong 1 ; Bi, Dingre 1 ;

作者机构: 1.Huazhong Agr Univ, State Key Lab Agr Microbiol, Wuhan, Peoples R China

2.Huazhong Agr Univ, Coll Vet Med, Wuhan, Peoples R China

3.Huazhong Agr Univ, Hubei Prov Key Lab Prevent Vet Med, Wuhan, Peoples R China

4.Hubei Anim Dis Prevent & Control Ctr, Wuhan, Peoples R China

关键词: p38 MAPK; Wnt/beta-catenin; DKK-1; Crosstalk; Haemophilus parasuis

期刊名称:CYTOKINE ( 影响因子:3.861; 五年影响因子:4.257 )

ISSN: 1043-4666

年卷期: 2020 年 136 卷

页码:

收录情况: SCI

摘要: Haemophilus parasuis induces severe acute systemic infection in pigs, characterized by fibrinous polyserositis, polyarthritis and meningitis. Our previous study demonstrated that H. parasuis induced the activation of p38 mitogen-activated protein kinase (MAPK) pathway, increasing the expression of proinflammatory genes and mediating H. parasuis-induced inflammation. Moreover, Wnt/beta-catenin signaling activation induced by H. parasuis disrupts the adherens junction between epithelial cells and initiates the epithelial-mesenchymal transition (EMT). In the present study, p38 MAPK was found to be involved in the accumulation of nuclear location of beta-catenin during H. parasuis infection in PK-15 and NPTr cells, via modulating the expression of dickkofp-1 (DKK-1), a negative regulator of Wnt/beta-catenin signaling. We generated DKK-1 knockout cell lines by CRISPR/Cas9-mediated genome editing in PK-15 and NPTr cells, and found that knockout of DKK-1 led to the dysfunction of p38 MAPK in regulating Wnt/beta-catenin signaling activity in H. parasuis-infected cells. Furthermore, p38 MAPK activity was independent of the activation of Wnt/beta-catenin signaling during H. parasuis infection. This is the first study to explore the crosstalk between p38 MAPK and Wnt/beta-catenin signaling during H. parasuis infection. It provides a more comprehensive view of intracellular signaling pathways during pathogenic bacteria-induced acute inflammation.

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