Pacific Blue™ 膜联蛋白 V/SYTOX™ AADvanced™ 细胞凋亡试剂盒,用于流式细胞分析
Pacific Blue™ 膜联蛋白 V/SYTOX™ AADvanced™ 细胞凋亡试剂盒,用于流式细胞分析
Invitrogen™

Pacific Blue™ 膜联蛋白 V/SYTOX™ AADvanced™ 细胞凋亡试剂盒,用于流式细胞分析

This product detects the externalization of phosphatidylserine in apoptotic cells using recombinant annexin V conjugated to violet-fluorescent Pacific Blue™ dye了解更多信息
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货号数量
A351361 kit
货号 A35136
价格(CNY)
4,450.00
Online Exclusive
Ends: 31-Dec-2025
5,913.00
共减 1,463.00 (25%)
Each
添加至购物车
数量:
1 kit
价格(CNY)
4,450.00
Online Exclusive
Ends: 31-Dec-2025
5,913.00
共减 1,463.00 (25%)
Each
添加至购物车
This product detects the externalization of phosphatidylserine in apoptotic cells using recombinant annexin V conjugated to violet-fluorescent Pacific Blue™ dye and dead cells using SYTOX™ AADvanced™ stain. After staining a cell population with Pacific Blue™, annexin V and SYTOX™ AADvanced™, apoptotic cells show violet fluorescence, dead cells show red fluorescence, and live cells show little or no fluorescence. These populations are easily distinguished by a flow cytometer with the 405 nm and 488 nm lines for excitation. There is very little spectral overlap between the two dyes, therefore very little compensation is needed. Each kit contains sufficient reagents for approximately 50 flow cytometry tests.

View a selection guide for all apoptosis assays for flow cytometry.
仅供科研使用。不可用于诊断程序。
规格
激发/发射Pacific Blue™:415⁄455,SYTOX™ AADvanced™:546⁄647
流式细胞仪激光线路405、488
适用于(应用)流式细胞分析
适用于(设备)流式细胞仪
反应次数50
产品类型细胞凋亡试剂盒
数量1 kit
运输条件湿冰
偶联物Pacific Blue™,SYTOX™ AADvanced™ 死细胞染色剂
产品规格管装
Unit SizeEach
内容与储存
含一小瓶膜联蛋白 V Pacific Blue™ 偶联物 (250 µL)、一小瓶 SYTOX™ AADvanced™ 死细胞染色、一瓶膜联蛋白结合缓冲液(5X 溶液,15 mL)和一小瓶 DMSO (100 µL)。

避光储存在冰箱 (2–8°C) 中。

常见问题解答 (FAQ)

我用胰蛋白酶消化贴壁细胞并用膜联蛋白V标记,现在甚至在对照的未处理细胞中,流式数据结果都显示出高比例的细胞凋亡,这是什么原因所致?

使用胰蛋白酶消化或机械刮擦细胞暂时破坏质膜,使得膜联蛋白V结合到细胞膜胞内面上的磷脂酰丝氨酸,导致假阳性染色。胰蛋白酶消化/机械刮擦后,让细胞在最佳的细胞培养条件和培养基中复苏约30分钟,从而在染色前恢复细胞膜完整性。对于轻微粘连细胞系,例如HeLa和NIH 3T3,还可使用无酶处理方法,例如使用Gibco 细胞溶解缓冲液(货号13151014)。

我能在成像实验中检测膜联蛋白V染色么?

膜联蛋白V染色一般不用于成像实验;而是流式细胞仪分析的最佳试剂。所有的细胞染色程度都会相近,因此很难从暗的非凋亡细胞中分辨出相对明亮的膜联蛋白V染色的细胞。使用我们的CellEvent Caspase 3/7 或Image-iT LIVE Caspase检测试剂盒检测caspase酶活化,这是用于成像实验检测凋亡的最佳方法。

流式细胞仪分析时,我应该在什么时候用膜联蛋白V染色粘连细胞?在胰蛋白酶消化前或后?

先用胰蛋白酶消化,用膜联蛋白V偶联染料染色之前,在合适的细胞培养条件和培养基中复苏约30分钟。用胰蛋白酶消化或机械刮擦细胞暂时打乱了质膜,使得膜联蛋白V连接到细胞膜的胞内面上的磷脂酰丝氨酸,因此导致假阳性染色。对于轻微粘连细胞系例如HeLa和NIH 3T3,您可以使用低强度(无酶)的解离产品如Gibco Cell Dissociation Buffer(货号13151014)。

我能固定膜联蛋白V标记的细胞么?

膜联蛋白V染色分析最好在是活细胞上进行。如果您需要固定您的细胞并用于分析,用3.7%甲醛在含有钙和镁的PBS溶液中固定可以维持连接。透化作用后信号不会保留,因此膜联蛋白V染色无法与内部抗体标记兼容。 

I want to study apoptosis using an Annexin V conjugate, but with adherent cells via microscopy instead of flow cytometry. Can this be done?

It has been done, but we don‘t recommend it. Both healthy cells and apoptotic cells possess phosphatidylserine on the cell surface, which can be detected with Annexin V, but apoptotic cells have significantly more of it. You can easily tell the difference between these two populations with flow cytometry, because flow cytometers are more sensitive and have a higher throughput. But with a microscope, you cannot always tell the difference, especially for adherent cells. Instead, for microscopy, we recommend a different technique, such as detecting caspases with CellEvent Caspase Detection Reagents.

Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.