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缺乏溶菌酶的猪链球菌特定突变体的产生与特性分析

Generation and characterization of a defined mutant of Streptococcus suis lacking suilysin.

作者信息

Allen A G, Bolitho S, Lindsay H, Khan S, Bryant C, Norton P, Ward P, Leigh J, Morgan J, Riches H, Eastty S, Maskell D

机构信息

Centre for Veterinary Science, Department of Clinical Veterinary Medicine, University of Cambridge, Cambridge CB3 0ES, United Kingdom.

出版信息

Infect Immun. 2001 Apr;69(4):2732-5. doi: 10.1128/IAI.69.4.2732-2735.2001.

DOI:10.1128/IAI.69.4.2732-2735.2001
PMID:11254643
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC98215/
Abstract

A defined allelic-replacement mutant of the sly gene, encoding a thiol-activated cytolysin, from a European isolate of Streptococcus suis serotype 2 was generated and characterized. Unlike the parental strain, it is nonhemolytic, noncytotoxic for cultured macrophage-like cells, avirulent in a mouse infection model, yet only slightly attenuated in a porcine model of systemic infection.

摘要

构建并鉴定了一株来自欧洲2型猪链球菌分离株的sly基因(编码一种硫醇激活的溶细胞素)的明确等位基因替换突变体。与亲本菌株不同,它不溶血,对培养的巨噬细胞样细胞无细胞毒性,在小鼠感染模型中无毒力,但在猪全身感染模型中仅略有减毒。

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本文引用的文献

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Streptococcus suis serotype 2 interactions with human brain microvascular endothelial cells.猪链球菌2型与人脑微血管内皮细胞的相互作用。
Infect Immun. 2000 Feb;68(2):637-43. doi: 10.1128/IAI.68.2.637-643.2000.
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Epithelial invasion and cell lysis by virulent strains of Streptococcus suis is enhanced by the presence of suilysin.猪链球菌强毒株的上皮侵袭和细胞裂解因溶菌酶的存在而增强。
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Heat-killed Streptococcus suis capsular type 2 strains stimulate tumor necrosis factor alpha and interleukin-6 production by murine macrophages.热灭活的2型猪链球菌菌株可刺激小鼠巨噬细胞产生肿瘤坏死因子α和白细胞介素-6。
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Identification, purification, and characterization of a thiol-activated hemolysin (suilysin) of Streptococcus suis.猪链球菌硫醇激活溶血素(猪溶素)的鉴定、纯化及特性分析
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The limited role of pneumolysin in the pathogenesis of pneumococcal meningitis.肺炎溶血素在肺炎球菌性脑膜炎发病机制中的作用有限。
J Infect Dis. 1995 Sep;172(3):805-9. doi: 10.1093/infdis/172.3.805.