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JoVE Encyclopedia of Experiments
Microbiology
利用生物发光技术在小鼠模型中实时成像细菌感染
利用生物发光技术在小鼠模型中实时成像细菌感染
Encyclopedia of Experiments
Microbiology
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Encyclopedia of Experiments Microbiology
Real-Time Imaging of Bacterial Infection in a Mouse Model Using Bioluminescence

利用生物发光技术在小鼠模型中实时成像细菌感染

Protocol
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02:12 min
December 12, 2025
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Please note that some of the translations on this page are AI generated. Click here for the English version.

Transcript

以一只被预先感染的致病细菌株的麻醉小鼠为例,该菌株经过基因改造表达基因整合的生物发光纵子。

纵子编码荧光素酶和合成其底物的多酶复合物。

荧光素酶催化与这些底物的反应,产生可见的发光。

将小鼠仰卧在成像舱的温度稳定平台上,并在成像过程中保持麻醉状态。

利用成像系统捕捉小鼠的生物发光和相应的X射线图像。

生物发光图像显示细菌感染的范围,而X光图像则为感染定位提供解剖参考。

影像检查后,将老鼠放回笼中,等待恢复。

定期拍摄生物发光图像,以监测细菌感染的实时进展。

随着时间推移,生物发光信号在不同部位的存在证实了感染在宿主体内的传播。

要拍摄动物,需通过设置相机参数并加热舞台来准备成像系统。将氧气流量设为每分钟1.5升,异氟醚为3.5%,然后将小鼠移入麻醉舱,然后进入温度稳定阶段,麻醉后进行。将小鼠仰卧,双臂伸展,并在成像时装上鼻锥,施用2.5%异氟醚。

关上门,拍摄生物发光图像和小鼠的X光片。成像完成后,将老鼠放回笼子并监测。它应该在3到5分钟内恢复意识。

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