Outer Membrane Lipoprotein Lip40 Modulates Adherence, Colonization, and Virulence of Actinobacillus pleuropneumoniae.

Outer Membrane Lipoprotein Lip40 Modulates Adherence, Colonization, and Virulence of Actinobacillus pleuropneumoniae.
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外膜脂蛋白 Lip40 调节胸膜肺炎放线杆菌的粘附、定植和毒力

DOI:
10.3389/fmicb.2018.01472
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发表时间:
2018
影响因子:
5.2
通讯作者:
Qi C
Qi C
中科院分区:
生物学2区
文献类型:
--
作者:
Liu J;Cao Y;Gao L;Zhang L;Gong S;Yang J;Zhao H;Yang D;Zhao J;Meng J;Gao Q;Qi C

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细菌脂蛋白是一组具有多种功能的膜蛋白,其中许多是致病菌的毒力因子。在本研究中,我们研究了外膜脂蛋白Lip40在胸膜肺炎放线杆菌发病机制中的作用。构建了缺失Lip40的突变株(Δlip40)和互补株(CΔlip40)。Δ lip 40表现出对St. Jude猪肺细胞的粘附性降低。与野生型和互补菌株相比,Δlip40突变体定殖小鼠肺组织的能力显著受损。此外,感染测定显示,感染Δlip40的猪显示较少的临床体征和肺部病变,表明Lip40有助于猪胸膜肺炎的发展。总的来说,我们的数据表明Lip40参与了A.胸膜肺炎
Bacterial lipoproteins are a set of membrane proteins with various functions; many of which are virulence factors of pathogenic bacteria. In the present study, we investigated the role of an outer membrane lipoprotein Lip40 in the pathogenesis of Actinobacillus pleuropneumoniae. A mutant strain (Δlip40) lacking Lip40 and a complemented strain (CΔlip40) were constructed. Δlip40 exhibited reduced adherence to the St. Jude porcine lung cells. The ability of the Δlip40 mutant to colonize the mouse lung tissues was significantly impaired compared to that of the wild type and complementation strains. Furthermore, an infection assay revealed that pigs infected with Δlip40 showed fewer clinical signs and lung lesions, indicating that Lip40 contributed to the development of porcine pleuropneumonia. Collectively, our data suggest that Lip40 is involved in the virulence of A. pleuropneumoniae.
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