JC-1样品分析方案
概述
用测试化合物制备细胞
添加JC-1工作溶液(100μL/孔用于96孔板或25μL/孔用于384孔板)在室温或37℃孵育1小时
移除JC-1工作溶液
读取 Ex / Em = 490 / 525nm和490 / 590nm处的荧光强度
注意:以下是我们推荐的活细胞方案。该方案仅提供指南,实际情况应根据您的具体实验进行调整修改。
1.准备JC-1工作溶液:
1.1在高质量无水DMSO中制备2至10 mM JC-1的储备液。 应随用随配及时使用或等分配制,应将使用剩余的溶液等分并在<-20℃冷冻。
注意:避免反复冻融循环,避免光照。
1.2制备1X JC-1工作溶液:在实验当天,将JC-1固体溶解在DMSO中或将等分试样的JC-1储备溶液解冻至室温。在Hanks和20 mM Hepes缓冲液(HHBS)或其他缓冲液(pH 7)和0.02%Pluronic®F-127中制备10至30μM1XJC-1工作溶液。
注意:JC-1不溶于水,因此它会在溶液中聚集。 建议在将JC-1工作溶液加载到微孔板之前对其进行过滤。
2.用荧光酶标仪进行JC-1检测:
2.1用测试化合物细胞培养所需的一段时间(例如,Jurkat细胞可以用喜树碱处理4-6小时)以诱导细胞凋亡。对于空白孔(没有细胞的培养基),加入相应量的化合物缓冲液。
2.2将100μL/孔的96孔板或25μL/孔的384孔板的JC-1工作溶液(来自步骤1.2)加入到细胞板中。
2.3将JC-1加载在37℃,5%CO2培养箱中培养15-60分钟。
注意:适当的孵育时间取决于所使用的单个细胞类型和细胞浓度,每个实验的孵育时间需要根据相应实验进行控制。
2.4从平板上取下JC-1工作溶液,用HHBS或其他缓冲液清洗细胞。 将100μL/孔的96孔板或25μL/孔的384孔HHBS板加回到细胞板中。
2.5监测Ex / Em = 490 / 525nm和490 / 590nm处的荧光变化以进行比率分析。
3.用荧光显微镜或流式细胞仪进行JC-1测定:
3.1用测试化合物细胞培养所需的一段时间(例如,Jurkat细胞可以用喜树碱处理4-6小时)以诱导细胞凋亡。
3.2离心细胞,每管取1-5×105个细胞。
3.3在500μLJC-1工作溶液中重悬细胞(来自步骤1.2)。
3.4在室温或37°C下避光孵育10至30分钟。
3.5用HHBS或其他缓冲液洗涤细胞。将细胞重悬于500μLHHBS中以获得每管1-5×105个细胞。
3.6用荧光显微镜(使用FITC和TRITC滤光片)或流式细胞仪(使用FL1和FL2通道)观察Ex / Em = 490 / 525nm和490 / 590nm处的荧光变化。
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