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Bioluminescence imaging to track bacterial dissemination of Yersinia pestis using different routes of infection in mice

机译:生物发光成像可追踪鼠疫耶尔森氏菌在小鼠中的不同感染途径的细菌传播情况

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摘要

BackgroundPlague is caused by Yersinia pestis, a bacterium that disseminates inside of the host at remarkably high rates. Plague bacilli disrupt normal immune responses in the host allowing for systematic spread that is fatal if left untreated. How Y. pestis disseminates from the site of infection to deeper tissues is unknown. Dissemination studies for plague are typically performed in mice by determining the bacterial burden in specific organs at various time points. To follow bacterial dissemination during plague infections in mice we tested the possibility of using bioluminescence imaging (BLI), an alternative non-invasive approach. Fully virulent Y. pestis was transformed with a plasmid containing the luxCDABE genes, making it able to produce light; this lux-expressing strain was used to infect mice by subcutaneous, intradermal or intranasal inoculation.
机译:背景瘟疫是由鼠疫耶尔森菌引起的,鼠疫耶尔森菌是一种以极高的速度传播到宿主内部的细菌。鼠疫杆菌会破坏宿主的正常免疫反应,从而导致系统传播,如果不及时治疗,将会致命。鼠疫耶尔森氏菌如何从感染部位扩散到更深的组织尚不清楚。鼠疫的传播研究通常在小鼠中通过确定不同时间点特定器官的细菌负担来进行。为了追踪鼠疫感染期间细菌的传播,我们测试了使用生物发光成像(BLI)(另一种非侵入性方法)的可能性。用含有luxCDABE基因的质粒转化完全有毒的鼠疫耶尔森氏菌,使其能够发光。该表达lux的菌株用于通过皮下,皮内或鼻内接种来感染小鼠。

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