Mesomycoplasma hyopneumoniae lipoprotein Mhp390 serves as a plasminogen receptor mediating extracellular matrix degradation and respiratory epithelial cells injury
文献类型： 外文期刊
作者： Liu, Wei 1 ; Ye, Liying 1 ; Yang, Keli 1 ; Yan, Xingyu 2 ; Gao, Ting 1 ; Yuan, Fangyan 1 ; Guo, Rui 1 ; Liu, Zewen 1 ; Li, Chang 1 ; Wu, Qiong 1 ; Zhu, Jiajia 1 ; Tian, Yongxiang 1 ; Tang, Bo 2 ; Song, Qiqi 3 ; Zhou, Danna 1 ;
作者机构： 1.Hubei Acad Agr Sci, Minist Agr & Rural Affairs, Key Lab Prevent & Control Agents Anim Bacteriosis, Inst Anim Husb & Vet,Hubei Prov Key Lab Anim Patho, Wuhan 430070, Peoples R China
2.GuoTai Taizhou Ctr Technol Innovat Vet Biol, Taizhou 225300, Peoples R China
3.Tianjin Agr Univ, Coll Anim Sci & Vet Med, Tianjin Key Lab Agr Anim Breeding & Hlth Husb, Tianjin 300384, Peoples R China
关键词：
期刊名称：VETERINARY RESEARCH （ 影响因子：3.5； 五年影响因子：4.0 ）
ISSN： 0928-4249
年卷期： 2025 年 56 卷 1 期
页码：
收录情况： SCI
摘要： The destruction of the respiratory barrier caused by Mesomycoplasma (Mycoplasma) hyopneumoniae plays a pivotal role in facilitating secondary infections by other respiratory pathogens. However, the pathogenesis of M. hyopneumoniae breaching the respiratory barrier to establish infection remains largely elusive. In this study, the role of Mhp390 encoded by M. hyopneumoniae in invasion of the respiratory tract barrier, including extracellular matrix and tracheal epithelial cells, were investigated through the Transwell assay. Our finding indicated that M. hyopneumoniae may exploit the host fibrinolytic system via Mhp390 to accumulate activated plasmin outside its membrane, thereby breaching the respiratory tract barrier and facilitating the progression of infection. Furthermore, the key functional domains within Mhp390 involved in its interaction with host plasminogen were determined by using truncated mutation techniques. Collectively, these findings will enhance our understanding of the mechanism underlying respiratory barrier invasion by M. hyopneumoniae thereby providing new theoretical basis for the development of novel vaccines and effective control strategies against secondary infection.
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