MycoLight 活细菌荧光成像试剂盒
Ex (nm) | 498 | Em (nm) | 526 |
分子量 | - | 溶剂 | - |
存储条件 | - |
MycoLight 活细菌荧光成像试剂盒是美国AAT Bioquest生产的用于检测细菌的试剂盒,MycoLight 活细菌荧光成像套件提供了一种简便方法,可通过荧光显微镜可视化活细菌。 MycoLight 520是一种非荧光酯酶底物,可扩散到革兰氏阳性菌和革兰氏阴性菌中。 通过细菌细胞内非特异性酯酶水解后,会产生绿色荧光产物,并在细菌内积累。 与常用的酯酶底物CFDA和CFDA-AM相比,该试剂盒可提供更明亮,更稳定的信号,具有更低的背景和更容易的染色方案。百萤生物是AAT Bioquest的中国代理商,为您提供优质的MycoLight 活细菌荧光成像试剂盒。
适用仪器
荧光显微镜 | |
Ex: | 488 nm |
Em: | 530 nm |
推荐孔板: | 黑色透明底板 |
通道: | FITC 通道 |
样品实验方案
简要概述
1.准备100X染料储备溶液
2.准备细菌样品
3.添加MycoLight 520
4.将细菌样品与MycoLight 520信号增强剂在黑暗中于37°C孵育5-10分钟或在室温下孵育60分钟
5.通过带有FITC滤光片组的荧光显微镜分析样品
溶液配制
1.储备溶液配制
所有未使用的储备溶液应分为一次性使用的等分试样,并在制备后储存在-20°C下。 避免重复冻融循环。
1.1MycoLight 520储备液(100X):
将100 uL DMSO(组分D)添加到MycoLight 520(组分A)小瓶中,制成100X储备液。
样品示例及操作
1.准备细菌样品,浓度范围为106到108个细胞/ ml。在适当的培养基中使细菌生长到对数后期。通过以10,000 x g离心10分钟除去培养基,然后将沉淀重新悬浮在测定缓冲液(组分C)中。注意:在波长= 600 nm(OD600)处测量细菌培养物的光密度,以确定细胞数。对于大肠杆菌培养,OD600 = 1.0等于8 x 108细胞/ ml。
2.根据需要用测试化合物处理细胞。通过以10,000 x g离心10分钟来去除处理液,然后将沉淀物重新悬浮在适量的测定缓冲液(组分C)中,以使处理过的样品中细菌的浓度与活菌浓度相同。注意:开始治疗之前,请确定细菌培养物的浓度。注意:死细菌可以作为阴性对照,建议使用70%乙醇杀死细菌30分钟,然后煮沸60分钟。
3.将1 µL 100X MycoLight 520储备液和10 µL 10X Signal Enhancer(组分B)加到90 µL的测定缓冲液细菌样品中。
4.充分混合并在黑暗中于37°C孵育5-10分钟,或在室温孵育60分钟,以获得佳染色效果。
5.使用荧光显微镜通过FITC(Ex / Em = 488/530 nm)通道监控细菌的荧光。注意:相同的方案也可用于酶标仪检测。
参考文献
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