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
Centre for Veterinary Science, Department of Clinical Veterinary Medicine, University of Cambridge, Cambridge CB3 0ES, United Kingdom.
Infect Immun. 2001 Apr;69(4):2732-5. doi: 10.1128/IAI.69.4.2732-2735.2001.
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.
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。