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The Pseudomonas aeruginosa Secreted Protein PA3611 Promotes Bronchial Epithelial Cell Epithelial-Mesenchymal Transition via Integrin αvß6-Mediated TGF-ß1-Induced p38/NF-κB Pathway Activation.
Shu, Lei; Chen, Sixia; Lin, Shaoqing; Lin, Huan; Shao, Yan; Yao, Jing; Qu, Lili; Zhang, Yunshi; Liu, Xing; Du, Xingran; Deng, Kaili; Chen, Xiaolin; Feng, Ganzhu.
Afiliación
  • Shu L; Department of Pulmonary and Critical Care Medicine, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China.
  • Chen S; Department of Respiratory Medicine, Sir Run Run Shaw Hospital, Nanjing Medical University, Nanjing, China.
  • Lin S; Department of Pulmonary and Critical Care Medicine, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China.
  • Lin H; Tongji Hospital, Tongji University School of Medicine, Tongji University, Shanghai, China.
  • Shao Y; Department of Pulmonary and Critical Care Medicine, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China.
  • Yao J; Department of Pulmonary and Critical Care Medicine, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China.
  • Qu L; Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China.
  • Zhang Y; Department of Pulmonary and Critical Care Medicine, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China.
  • Liu X; Laboratory Medicine Center, The Second Affiliated Hospital, Nanjing Medical University, Nanjing, China.
  • Du X; Department of Tuberculosis, Xuzhou Infectious Disease Hospital, Xuzhou, China.
  • Deng K; Department of Respiratory Medicine, The Affiliated Suqian Hospital of Xuzhou Medical University, Suqian, China.
  • Chen X; Department of Infectious Diseases, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China.
  • Feng G; Department of Respiratory Medicine, Sir Run Run Shaw Hospital, Nanjing Medical University, Nanjing, China.
Front Microbiol ; 12: 763749, 2021.
Article en En | MEDLINE | ID: mdl-35197937
Pseudomonas aeruginosa (PA) is an important pathogen that has been proven to colonize and cause infection in the respiratory tract of patients with structural lung diseases and to lead to bronchial fibrosis. The development of pulmonary fibrosis is a complication of PA colonization of the airway, resulting from repeated infection, damage and repair of the epithelium. Bronchial epithelial cell epithelial-mesenchymal transition (EMT) plays a vital role in bronchial fibrosis. To date, research on bronchial epithelial cell EMT caused by PA-secreted virulence factors has not been reported. Here, we found that PA3611 protein stimulation induced bronchial epithelial cell EMT with mesenchymal cell marker upregulation and epithelial cell marker downregulation. Moreover, integrin αvß6 expression and TGF-ß1 secretion were markedly increased, and p38 MAPK phosphorylation and NF-κB p65 subunit phosphorylation were markedly enhanced. Further research revealed that PA3611 promoted EMT via integrin αvß6-mediated TGF-ß1-induced p38/NF-κB pathway activation. The function of PA3611 was also verified in PA-infected rats, and the results showed that ΔPA3611 reduced lung inflammation and EMT. Overall, our results revealed that PA3611 promoted EMT via integrin αvß6-mediated TGF-ß1-induced p38/NF-κB pathway activation, suggesting that PA3611 acts as a crucial virulence factor in bronchial epithelial cell EMT and is a potential target for the clinical treatment of bronchial EMT and fibrosis caused by chronic PA infection.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Front Microbiol Año: 2021 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Front Microbiol Año: 2021 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza