适用仪器

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荧光显微镜
激发：	FITC滤波片组
发射：	FITC滤波片组
推荐孔板：	黑色透明

样品实验方案

简要概述

1.使用96孔板的密度为5×10⁴至2×10⁵细胞/ 100 μL /孔的待测化合物制备细胞
2.加入等体积的ApoSight Caspase 3/7底物工作溶液
3.在5％CO₂培养箱中于37°C孵育60分钟
4.用HHBS洗涤细胞1-2次
5.使用带有530/30 nm滤波片（FITC通道）的流式细胞仪或带有FITC滤波片组的荧光显微镜分析细胞

 

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。

 

样品示例及操作

悬浮培养中诱导细胞凋亡的实例

1.用2μg/ mL喜树碱处理Jurkat细胞3小时
2.用1μM星形孢菌素处理Jurkat细胞3-4小时
3.用4μg/ mL喜树碱处理HL-60细胞4小时
4.用1μM星形孢菌素处理HL-60细胞4小时。
注意，应对每个细胞系进行单独评估，以确定诱导凋亡的最佳细胞密度。

 

荧光显微镜的样品方案

1.用5×10⁴至2×10⁵个细胞/ 100 μL /孔/ 96孔板的密度制备含待测化合物的细胞。
2.向细胞中加入等体积的Caspase 3/7底物工作溶液（100 μL /孔/ 96孔板）。
3.在5％CO₂培养箱中于37°C孵育60分钟。
4.用HHBS或您选择的缓冲液洗涤细胞1-2次。
5.使用FITC滤波片组的荧光显微镜成像。

 

图示

图1.使用ApoSight 绿色胱天蛋白酶3/7底物检测Jurkat细胞中胱天蛋白酶3/7活性。将Jurkat细胞（200,000个细胞/孔/ 96孔板）用1μM星形孢菌素或DMSO处理4小时。将细胞与Caspase 3/7底物工作溶液在37°C下孵育1小时。使用FITC滤波片组，用荧光显微镜拍摄图像。

 

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