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- 文献和实验
- 技术资料
- 抗体英文名:
7-AAD
- 规格:
2ml
Brand BD Pharmingen™
Application Flow cytometry (Routinely Tested)
Description
7-Amino-Actinomycin D (7-AAD) is a convenient, ready-to-use nucleic acid dye that can be used in place of propidium iodide (PI) for the exclusion of nonviable cells in flow cytometric assays. The advantage of 7-AAD over PI is the ability to be used in conjunction with phycoerythrin (PE)- and fluorescein isothiocyanate (FITC)-labelled monoclonal antibodies in 2-color analysis, with minimal spectral overlap between 7-AAD, PE and FITC fluorescence emissions. The 7-AAD fluorescence is detected in the far red range of the spectrum (650 nm long-pass filter). This reagent is used as a viability probe for methods of dead cell exclusion, based on light scatter and uptake of 7-AAD as detected in FL3. This reagent does not require dilution. Suggested quantity to use: 5 µl (0.25 µg)/test (1x10^6 cells) and incubate for 10 minutes before analysis.
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文献和实验Annexin V/7-AAD Staining in Keratinocytes
by labeled annexin V. Late apoptotic cells and necrotic cells lose their cell membrane integrity and are permeable to vital dyes such as 7-AAD (DNA intercalator).
FlowJo 等软件进行补偿。下面以 12 μM 的喜树碱处理 293 悬浮细胞 4 h 的结果为例演示如何用 FlowJo(版本号:v10.6.2)进行补偿调节,此处分别介绍自动补偿和手动补偿。 (一)、数据导入和分析 1. 选中需要分析的样本,直接将其拖进软件中,四个文件分别是 KB(空白组)、PE(PE 单染管)、AAD(7-AAD 单染管)、PE + AAD(实验组)。 2. 双击「空白组」,可以看到采集的最原始的数据,圈出需要分析
Q:Annexin V 凋亡检测试剂盒的原理是什么? A:Annexin V 是一种钙离子依赖性磷脂结合蛋白,与磷脂酰丝氨酸 PS 有高度亲和力,可通过细胞外侧暴露的 PS 与凋亡早期细胞胞膜结合,将 Annexin V 标记荧光染料如 FITC 利用流式细胞仪或荧光显微镜可检测细胞凋亡。 碘化丙啶(Propidium Iodide, PI)或 7-AAD 可与双链 DNA 特异性结合,并产生强烈的荧光,正常情况下无法透过细胞膜。由于凋亡晚期或坏死细胞膜丧失完整性,核染料 PI 或 7-AAD
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