CellTrace™ Oregon Green™ 488 羧基二乙酸酯、琥珀酰亚胺酯(羧基-DFFDA、SE)、细胞渗透性、混合异构体
CellTrace™ Oregon Green™ 488 羧基二乙酸酯、琥珀酰亚胺酯(羧基-DFFDA、SE)、细胞渗透性、混合异构体
Invitrogen™

CellTrace™ Oregon Green™ 488 羧基二乙酸酯、琥珀酰亚胺酯(羧基-DFFDA、SE)、细胞渗透性、混合异构体

Like CFDA SE, CellTrace™ Oregon Green® 488 (carboxy-DFFDA SE) should be a useful tool for following proliferating cells. This Oregon了解更多信息
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货号数量
C3455520 x 50 μg
货号 C34555
价格(CNY)
5,020.00
飞享价
Ends: 31-Dec-2025
6,670.00
共减 1,650.00 (25%)
Each
添加至购物车
数量:
20 x 50 μg
价格(CNY)
5,020.00
飞享价
Ends: 31-Dec-2025
6,670.00
共减 1,650.00 (25%)
Each
添加至购物车
Like CFDA SE, CellTrace™ Oregon Green® 488 (carboxy-DFFDA SE) should be a useful tool for following proliferating cells. This Oregon Green® 488 probe passively diffuses into cells, where it is colorless and nonfluorescent until its acetate groups are removed by intracellular esterases to yield a highly fluorescent, amine-reactive dye. Upon reaction with intracellular amines, the probe forms Oregon Green® 488 conjugates that are well-retained by cells. Unlike fluorescein conjugates, Oregon Green® 488 conjugates exhibit bright, photostable green fluorescence that is independent of pH at typical cellular pH values (pH-6-8).
仅供科研使用。不可用于诊断程序。
规格
检测方法荧光
染料类型Oregon Green™ 488
形式实心
数量20 x 50 μg
试剂类型细胞追踪剂化合物、细胞标记试剂
运输条件室温
溶解度DMSO(二甲亚砜)
发射488
适用于(应用)细胞活力与增殖
适用于(设备)荧光显微镜, 流式细胞仪
产品线CellTrace、Oregon Green
产品类型羧基-DFFDA SE
Unit SizeEach
内容与储存
包含20瓶 Oregon Green™ 488 羧酸二乙酸酯、SE(50 μ克/瓶)。 储存在冰箱中 (-5 - -30°C) 并避光。

常见问题解答 (FAQ)

我储存了CellTrace细胞增殖试剂的DMSO储液。相比于新鲜溶解的染料储液,我所获得的细胞信号较差。为何这种产品储存后会失效?

我们提供小份的CellTrace试剂,强烈建议您丢弃任何未用的DMSO染料储液。CellTrace试剂有乙酰酯基团,可以覆盖染料的电荷使得它们可以透过细胞,并且琥珀酰亚胺酯胺反应分子允许共价结合到细胞组件,可长时间滞留。如果储存环境中中含有水,乙酰酯和琥珀酰亚胺酯都易于水解。DMSO是吸水性的,因此极易从大气中吸收水。如果您必须要储存自己的染料储备液,需要使用高质量的无水DMSO储液(且不能经常打开),并将小瓶密封放置于密封的含有干燥剂的地方,尽可能保持DMSO/染料储液干燥。 

我使用CellTrace细胞增殖试剂时无法获得清晰分离的细胞增殖峰,如何改善峰分离效果?

以下为有助于实现均一染色,明亮、清晰的亲代增殖峰的建议:

•临使用前,使用试剂盒附带的DMSO或高质量无水DMSO溶解CellTrace染料储备液,获得最佳的反应活性和细胞透性。
•在PBS或其他无胺、无蛋白生理学缓冲液染色,不要在培养基中染色。
•从单细胞悬液开始染色,并在染色过程中轻轻摇动细胞。
•通过在冷的培养基中孵育细胞5分钟,快速去除未结合的染料,之后用预热培养基洗涤洗细胞两遍。
•在检测体系中引入死细胞染料,并仅对活细胞设门限。
•尽可能多地分析每个样品中的细胞。
•流体动力聚焦细胞流式细胞仪使用低的流动速率。
•CellTrace染料最好的染色浓度通常介于1-10 µM之间,但针对某些类型细胞的最佳浓度会存在差异。观察不同稀释度的染色剂的染色结果,确定您的细胞最适宜的染色浓度。
•某些类型的细胞吸收染料后的染色强度分布范围较广。如果您的细胞也是这种情况,则需要首先分选染色的未刺激亲本细胞,从而选择出一个窄的峰分布。

我能储存CellTrace试剂的储备液么且你们建议如何储存?

我们提供小份的CellTrace试剂并强烈建议丢弃任何未用的DMSO染料储备液。CellTrace试剂有二醋酸基团可以封闭染料的电荷,使得它们可以透过细胞并且琥珀酰亚胺酯胺反应基团可允许长时间滞留。如果储存环境中含有水,二醋酸盐和琥珀酰亚胺酯都易于水解。DMSO是吸水性的因此极易从大气中吸收水。如果您必须要储存您的染料储备液,您需要使用高质量的无水DMSO储备液,不能经常打开且将小瓶密封放置于密封的含有干燥剂的地方来保持DMSO/染料储备液尽可能的干燥。-20°C保存。在短时间内尽快使用。

CellTrace细胞增殖试剂工作原理是什么?

CellTrace细胞增殖试剂是一种细胞透过型染料,胞内酯酶可将其分解产生高荧光化合物并可以共价地结合到细胞内的胺类上,将染料附着于多种细胞内组分并产生稳定的信号。这些试剂毒性很小并对多种细胞增殖活性的影响很小。 

我想用核酸染料来追踪我的细胞,比如DAPI或者Hoechst染料。您有什么建议吗?

这是不推荐的。这些染料与DNA和RNA的结合会影响核酸的正常功能,扰乱转录和增殖。诸如CellTracker染料或Qtracker试剂在不严重扰乱细胞正常活动的条件下对其进行追踪。如果您仍需要使用核酸染料进行标记且细胞是哺乳动物和非血液来源的话,CellLight 细胞核试剂可通过瞬时转染进入细胞,在核表达蛋白上表达GFP或RFP长达数天而不影响其功能。

引用和文献 (4)

引用和文献
Abstract
Method for assessment of viability and morphological changes of bacteria in the early stage of colony formation on a simulated natural environment.
Authors:Shimomura Y, Ohno R, Kawai F, Kimbara K
Journal:Appl Environ Microbiol
PubMed ID:16820503
'A quantitative analysis of changes in the physiological status of bacterial cells is a fundamental type of study in microbiological research. We devised a method for measuring the viability of bacteria in the early stage of colony formation on a simulated natural environment. In this method, a solid medium containing ... More
Functional capacity of Mycobacterium tuberculosis-specific T cell responses in humans is associated with mycobacterial load.
Authors:Day CL, Abrahams DA, Lerumo L, Janse van Rensburg E, Stone L, O'rie T, Pienaar B, de Kock M, Kaplan G, Mahomed H, Dheda K, Hanekom WA,
Journal:J Immunol
PubMed ID:21775682
'High Ag load in chronic viral infections has been associated with impairment of Ag-specific T cell responses; however, the relationship between Ag load in chronic Mycobacterium tuberculosis infection and functional capacity of M. tuberculosis-specific T cells in humans is not clear. We compared M. tuberculosis-specific T cell-associated cytokine production and ... More
Three-dimensional culture for expansion and differentiation of mouse embryonic stem cells.
Authors:Liu H, Collins SF, Suggs LJ,
Journal:Biomaterials
PubMed ID:16860386
'Differentiation of embryonic stem (ES) cells typically requires cell-cell aggregation in the form of embryoid bodies (EBs). This process is not very well controlled and final cell numbers can be limited by EB agglomeration and the inability to drive differentiation towards a desired cell type. This study compares three-dimensional (3D) ... More
Myosin light chain kinase mediates transcellular intravasation of breast cancer cells through the underlying endothelial cells: a three-dimensional FRET study.
Authors:Khuon S, Liang L, Dettman RW, Sporn PH, Wysolmerski RB, Chew TL,
Journal:J Cell Sci
PubMed ID:20067998
'The transient and localized signaling events between invasive breast cancer cells and the underlying endothelial cells have remained poorly characterized. We report a novel approach integrating vascular engineering with three-dimensional time-lapse fluorescence resonance energy transfer (FRET) imaging to dissect how endothelial myosin light chain kinase (MLCK) is modulated during tumor ... More