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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