DRAQ7 (0.3mM) 远红外DNA染料

DRAQ7;DRAQ5;Anthraquinone dye 蒽醌染料;DNA染料;7-AAD;碘化丙啶(PI);细胞活力分析;TMRM 线粒体膜电位探针;

DRAQ7是一种不具细胞通透性的远红外DNA染料,仅对死细胞和透化细胞的核染色,能与其它常见的标记染料(比如:GFP或FITC)联合使用。DRAQ7是一种理想工具用于研究死细胞或膜受损细胞,因其不用进入完整膜结构的活细胞。DRAQ7是碘化丙啶(PI)和7-AAD的理想替代品,因其不能被紫外激发,且与PE/PE同源物没有发射光重叠。

DRAQ7的关键特征包括:1)快速染色死细胞或透化细胞的dsDNA/核;2)低光漂白;3)适用于绝大多数细胞,真核和原核来源:哺乳动物、细菌、寄生虫、植物等;4)长期培养无毒性;5)能与活细胞染料结合使用;6)流式细胞检测中与常见的FITC/GFP+PE结合实验无需做荧光补偿;7)不用清洗或RNase处理;

染料特性

1)   外观:液体(0.3mM)

2)   激发波长:最理想633和647nm处(Eλmax= 599/644nm); 次理想488,514,568nm处(仅适用于流式分析)

3)   发射波长(取决于仪器):665nm至红外(Emλmax= 678nm/697nm,掺入 dsDNA)

          与可见光区比如:GFP和FITC,最小重叠;发射滤片可能包括:695L, 715LP 或780 LP

3)与紫外/可见光荧光素的多波长成像:与DNA结合后没有荧光增强;低光漂白效应;兼容于流式细胞仪、激光扫描细胞仪和共聚焦显微镜的光学;以及基于灯泡的荧光显微镜。

保存与运输方法

保存:2-8°C避光保存,2年有效。不可冻存!

运输:室温运输。

注意事项

1)DRAQ7是Biostatus Limited的商标名。

2)荧光染料都存在淬灭的问题,保存和操作过程中注意避光。

3)为了您的安全和健康,请穿实验服并戴一次性手套操作。

染色步骤(悬浮细胞的活力染色)

1)对于每个样本,用PBS重悬细胞使其密度约为5×105细胞/ml。叠氮钠影响DRAQ7染色,建议用PBS(不含钙镁或叠氮钠)或细胞培养基(不含叠氮钠)来染色。

2)加入适量DRAQ7(0.3mM)到所需浓度。推荐做浓度滴定来确定最佳的工作浓度。用于流式细胞仪和显微成像检测,通常1:100的稀释倍数(3µM)能获得良好的染色结果。

3)室温避光孵育10-15min。不需清洗。

4)流式细胞仪分析。对于流式分析,当使用蓝色激光器激发,染料用PerCP-Cy5.5或PerCP-eFluor 710的滤片设置来观察;当使用红色激光器激发,染料用Cy5的BP或LP滤片设置来观察。另,当进行荧光显微镜分析,最好用黄-红光激发。用比如:695L, 715LP 或780 LP的远红长通滤片来观察。

延伸阅读(DRAQ7的动力学活力分析)

文献来源:Wlodkowic D, Akagi J, Dobrucki J, et al. Kinetic viability assays using DRAQ7 probe. Curr Protoc Cytom. 2013;Chapter 9:10.1002/0471142956.cy0941s65. doi:10.1002/0471142956.cy0941s65

实验1)DRAQ7实时染色(Real-time DRAQ7 staining)

①在合适的容器比如微量滴定板或细胞培养瓶内接种或分散细胞到培养基;

②加10μl DRAQ7储存液(浓度:300μM)到每1000μl细胞悬液(染料终浓度为3μM);

③轻轻混匀使染料均匀分散在溶液内;

④在含DRAQ7的情况下使细胞生长高达5天(37℃,5% CO2);

⑤定期收集染色样本用于流式分析;【细胞体积至少符合流式细胞仪分析要求的最低样本体积100-150μl】;

⑥不用清洗直接用流式细胞仪分析,用488nm激发器或633-647nm激发器,发射波长>660 nm。

关于DRAQ7的重要信息:DRAQ7培养高达5天对人细胞系无毒性,在高达20μM DRAQ7的体系内培养细胞,对细胞增殖、细胞周期、活力无明显干扰,且对药物比如抗肿瘤化合物或凋亡诱导剂没有反应。

结果呈现:

Figure 1 Assessment of live, early apoptotic and late apoptotic/necrotic cells based on stainability with plasma membrane permeability marker DRAQ7. Analysis was based on real-time labeling of THP-1 cells with 3 μM of DRAQ7. Bivariate dot plots DRAQ7 vs. forward scatter (FS) enable discrimination of live (DRAQ7−; green gate), early apoptotic (DRAQ7dim; blue gate) and late apoptotic/necrotic (DRAQ7+; red gate) subpopulations. DRAQ7 probe was excited using 633 nm laser and logarithmically amplified fluorescence signals were collected using 660 nm long-pass filter.

实验2)DRAQ7和线粒体膜电位敏感探针TMRM双重实时评估细胞死亡(Two color real-time assay with DRAQ7 and TMRM)

①在合适的容器比如微量滴定板或细胞培养瓶内接种或分散细胞到培养基;

②加10μl DRAQ7储存液(浓度:300μM)到每1000μl细胞悬液(染料终浓度为3μM);

③加15μl TMRM工作液(浓度:10μM)到每1000μl细胞悬液(染料终浓度为150nM);

④轻轻混匀使染料均匀分散在溶液内;

⑤在含DRAQ7和TMRM两种染料的情况下使细胞生长高达5天(37℃,5% CO2);

⑥定期收集染色样本用于流式分析;【细胞体积至少符合流式细胞仪分析要求的最低样本体积100-150μl】;

⑦不用清洗直接用流式细胞仪分析,用488nm激发器和633-647nm激发器,发射波长分别搜集575nm(TMRM)和>660 nm(DRAQ7)的信号。

重要信息:DRAQ7和TMRM两种染料都能被488nm激发器激发。两者相邻通道间的光谱重叠很小,如两者都用488nm激发器来激发,可能需做一些小补偿调整。DRAQ7荧光能用标准APC 660nm宽带滤片观察,当用633nm激发器来激发,避免使用任何荧光补偿。调整对数放大尺度来区分活细胞(明亮的TMRM+/DRAQ7−)、凋亡细胞(TMRMlow/DRAQ7−)、具受损质膜的晚期凋亡/坏死细胞(TMRMlow/DRAQ7+)。在一些细胞体系,可能有必要优化DRAQ7和TMRM浓度,以及PMT电压在不同的细胞时间中获得最大的分辨率。

Figure 2 Discrimination of viable, apoptotic and late apoptotic/necrotic cells based on Δψm marker

 tetramethylrhodamine methyl ester (TMRM) and plasma membrane permeability marker DRAQ7. Analysis was based on real-time labeling of THP-1 cells with 3 μM of DRAQ7 and 150 nm of TMRM. Bivariate dot plots DRAQ7 vs. TMRM enable discrimination of live (TMRM+/DRAQ7−; green gate), early apoptotic (TMRMlow/DRAQ7dim; blue gate) and late apoptotic/necrotic (TMRMlow/DRAQ7+; red gate) subpopulations. DRAQ7 probe was excited using 633 nm laser and logarithmically amplified fluorescence signals were collected using 660 nm long-pass filter. TMRM was excited using 488 nm laser and logarithmically amplified fluorescence signals were collected using 575 nm long-pass filter. Debris signals were excluded electronically by setting the proper low threshold.

相关产品

名称 规格
Ethidium Bromide (EB)溴化乙锭 1g
EB (10 mg/ml in Water) EB水溶液(10 mg/ml) 5ml
Propidium Iodide碘化丙啶(粉末) 10mg
Propidium Iodide (1mg/ml)碘化丙啶(1mg/ml) 1ml
Ethidium Monoazide Bromide (EMA)叠氮溴化乙锭 5mg
Ethidium Homodimer 1 (EthD-1)溴乙啡锭二聚体1 1mg
Ethidium Homodimer 3 (EthD-3)溴乙啡锭二聚体3 1mg
7-AAD (7-Aminoactinomycin D) 7-氨基放线菌素D 1mg
Acridine Orange Hydrochloride吖啶橙盐酸盐 1g
DRAQ5 (5mM)远红外DNA染料 50µl
Propidium Monoazide (PMA)叠氮溴化丙锭 1mg
LDS 751 Nucleic Acid Stain核酸染色剂 25mg
DRAQ7 (0.3mM)远红外DNA染料 250µl

 

DRAQ7 (0.3mM) 远红外DNA染料 细胞活力分析;TMRM 线粒体膜电位探针

DRAQ7;DRAQ5;Anthraquinone dye 蒽醌染料;DNA染料;7-AAD;碘化丙啶(PI);细胞活力分析;TMRM 线粒体膜电位探针;

产品描述

DRAQ7是一种不具细胞通透性的远红外DNA染料,仅对死细胞和透化细胞的核染色,能与其它常见的标记染料(比如:GFP或FITC)联合使用。DRAQ7是一种理想工具用于研究死细胞或膜受损细胞,因其不用进入完整膜结构的活细胞。DRAQ7是碘化丙啶(PI)和7-AAD的理想替代品,因其不能被紫外激发,且与PE/PE同源物没有发射光重叠。

DRAQ7的关键特征包括:1)快速染色死细胞或透化细胞的dsDNA/核;2)低光漂白;3)适用于绝大多数细胞,真核和原核来源:哺乳动物、细菌、寄生虫、植物等;4)长期培养无毒性;5)能与活细胞染料结合使用;6)流式细胞检测中与常见的FITC/GFP+PE结合实验无需做荧光补偿;7)不用清洗或RNase处理;

染料特性

1)   外观:液体(0.3mM)

2)   激发波长:最理想633和647nm处(Eλmax= 599/644nm); 次理想488,514,568nm处(仅适用于流式分析)

3)   发射波长(取决于仪器):665nm至红外(Emλmax= 678nm/697nm,掺入 dsDNA)

          与可见光区比如:GFP和FITC,最小重叠;发射滤片可能包括:695L, 715LP 或780 LP

3)与紫外/可见光荧光素的多波长成像:与DNA结合后没有荧光增强;低光漂白效应;兼容于流式细胞仪、激光扫描细胞仪和共聚焦显微镜的光学;以及基于灯泡的荧光显微镜。

保存与运输方法

保存:2-8°C避光保存,2年有效。不可冻存!

运输:室温运输。

注意事项

1)DRAQ7是Biostatus Limited的商标名。

2)荧光染料都存在淬灭的问题,保存和操作过程中注意避光。

3)为了您的安全和健康,请穿实验服并戴一次性手套操作。

染色步骤(悬浮细胞的活力染色)

1)对于每个样本,用PBS重悬细胞使其密度约为5×105细胞/ml。叠氮钠影响DRAQ7染色,建议用PBS(不含钙镁或叠氮钠)或细胞培养基(不含叠氮钠)来染色。

2)加入适量DRAQ7(0.3mM)到所需浓度。推荐做浓度滴定来确定最佳的工作浓度。用于流式细胞仪和显微成像检测,通常1:100的稀释倍数(3µM)能获得良好的染色结果。

3)室温避光孵育10-15min。不需清洗。

4)流式细胞仪分析。对于流式分析,当使用蓝色激光器激发,染料用PerCP-Cy5.5或PerCP-eFluor 710的滤片设置来观察;当使用红色激光器激发,染料用Cy5的BP或LP滤片设置来观察。另,当进行荧光显微镜分析,最好用黄-红光激发。用比如:695L, 715LP 或780 LP的远红长通滤片来观察。

延伸阅读(DRAQ7的动力学活力分析)

文献来源:Wlodkowic D, Akagi J, Dobrucki J, et al. Kinetic viability assays using DRAQ7 probe. Curr Protoc Cytom. 2013;Chapter 9:10.1002/0471142956.cy0941s65. doi:10.1002/0471142956.cy0941s65

实验1)DRAQ7实时染色(Real-time DRAQ7 staining)

①在合适的容器比如微量滴定板或细胞培养瓶内接种或分散细胞到培养基;

②加10μl DRAQ7储存液(浓度:300μM)到每1000μl细胞悬液(染料终浓度为3μM);

③轻轻混匀使染料均匀分散在溶液内;

④在含DRAQ7的情况下使细胞生长高达5天(37℃,5% CO2);

⑤定期收集染色样本用于流式分析;【细胞体积至少符合流式细胞仪分析要求的最低样本体积100-150μl】;

⑥不用清洗直接用流式细胞仪分析,用488nm激发器或633-647nm激发器,发射波长>660 nm。

关于DRAQ7的重要信息:DRAQ7培养高达5天对人细胞系无毒性,在高达20μM DRAQ7的体系内培养细胞,对细胞增殖、细胞周期、活力无明显干扰,且对药物比如抗肿瘤化合物或凋亡诱导剂没有反应。

结果呈现:

Figure 1 Assessment of live, early apoptotic and late apoptotic/necrotic cells based on stainability with plasma membrane permeability marker DRAQ7. Analysis was based on real-time labeling of THP-1 cells with 3 μM of DRAQ7. Bivariate dot plots DRAQ7 vs. forward scatter (FS) enable discrimination of live (DRAQ7−; green gate), early apoptotic (DRAQ7dim; blue gate) and late apoptotic/necrotic (DRAQ7+; red gate) subpopulations. DRAQ7 probe was excited using 633 nm laser and logarithmically amplified fluorescence signals were collected using 660 nm long-pass filter.

实验2)DRAQ7和线粒体膜电位敏感探针TMRM双重实时评估细胞死亡(Two color real-time assay with DRAQ7 and TMRM)

①在合适的容器比如微量滴定板或细胞培养瓶内接种或分散细胞到培养基;

②加10μl DRAQ7储存液(浓度:300μM)到每1000μl细胞悬液(染料终浓度为3μM);

③加15μl TMRM工作液(浓度:10μM)到每1000μl细胞悬液(染料终浓度为150nM);

④轻轻混匀使染料均匀分散在溶液内;

⑤在含DRAQ7和TMRM两种染料的情况下使细胞生长高达5天(37℃,5% CO2);

⑥定期收集染色样本用于流式分析;【细胞体积至少符合流式细胞仪分析要求的最低样本体积100-150μl】;

⑦不用清洗直接用流式细胞仪分析,用488nm激发器和633-647nm激发器,发射波长分别搜集575nm(TMRM)和>660 nm(DRAQ7)的信号。

重要信息:DRAQ7和TMRM两种染料都能被488nm激发器激发。两者相邻通道间的光谱重叠很小,如两者都用488nm激发器来激发,可能需做一些小补偿调整。DRAQ7荧光能用标准APC 660nm宽带滤片观察,当用633nm激发器来激发,避免使用任何荧光补偿。调整对数放大尺度来区分活细胞(明亮的TMRM+/DRAQ7−)、凋亡细胞(TMRMlow/DRAQ7−)、具受损质膜的晚期凋亡/坏死细胞(TMRMlow/DRAQ7+)。在一些细胞体系,可能有必要优化DRAQ7和TMRM浓度,以及PMT电压在不同的细胞时间中获得最大的分辨率。

Figure 2 Discrimination of viable, apoptotic and late apoptotic/necrotic cells based on Δψm marker

 tetramethylrhodamine methyl ester (TMRM) and plasma membrane permeability marker DRAQ7. Analysis was based on real-time labeling of THP-1 cells with 3 μM of DRAQ7 and 150 nm of TMRM. Bivariate dot plots DRAQ7 vs. TMRM enable discrimination of live (TMRM+/DRAQ7−; green gate), early apoptotic (TMRMlow/DRAQ7dim; blue gate) and late apoptotic/necrotic (TMRMlow/DRAQ7+; red gate) subpopulations. DRAQ7 probe was excited using 633 nm laser and logarithmically amplified fluorescence signals were collected using 660 nm long-pass filter. TMRM was excited using 488 nm laser and logarithmically amplified fluorescence signals were collected using 575 nm long-pass filter. Debris signals were excluded electronically by setting the proper low threshold.

相关产品

名称 规格
Ethidium Bromide (EB)溴化乙锭 1g
EB (10 mg/ml in Water) EB水溶液(10 mg/ml) 5ml
Propidium Iodide碘化丙啶(粉末) 10mg
Propidium Iodide (1mg/ml)碘化丙啶(1mg/ml) 1ml
Ethidium Monoazide Bromide (EMA)叠氮溴化乙锭 5mg
Ethidium Homodimer 1 (EthD-1)溴乙啡锭二聚体1 1mg
Ethidium Homodimer 3 (EthD-3)溴乙啡锭二聚体3 1mg
7-AAD (7-Aminoactinomycin D) 7-氨基放线菌素D 1mg
Acridine Orange Hydrochloride吖啶橙盐酸盐 1g
DRAQ5 (5mM)远红外DNA染料 50µl
Propidium Monoazide (PMA)叠氮溴化丙锭 1mg
LDS 751 Nucleic Acid Stain核酸染色剂 25mg
DRAQ7 (0.3mM)远红外DNA染料 250µl

 

DRAQ5 (5mM) 远红外DNA染料

DRAQ5;DRAQ7;Anthraquinone dye 蒽醌染料;DNA染料;7-AAD;细胞周期分析;染色体倍性分析;有核/无核细胞区分;

产品信息

产品名称

产品编号 规格

DRAQ5 (5mM)远红外DNA染料

MX4219-50UL 50µl

DRAQ5 (5mM)远红外DNA染料 MX4219-200UL 200µl

产品描述

DRAQ5是一种细胞通透性的远红外DNA染料,能联合其它常见的标记染料比如:GFP或FITC,用于固定或非固定/活细胞的染色。与任何其它细胞通透性的DNA嵌入染料一样,DRAQ5在长期实验中可能抑制细胞分裂,需测定染料可能的任何效应。

DRAQ5能用于流式细胞仪、活细胞成像和基于细胞的各种实验,DRAQ5高度兼容于许多仪器平台上的标准实验方案。DRAQ5染色包含这些优势:1)以便捷的即用型水溶性溶液形式提供;2)能被活细胞快速摄取,提供高水平的细胞核辨别力;3)无光漂白效应;4)适用于绝大多数细胞,真核和原核来源:哺乳动物、细菌、寄生虫、植物等;5) 流式细胞检测中与常见的FITC/GFP+PE结合实验无需做荧光补偿;6)不需要RNase处理;7)与DNA结合后没有荧光增强,因此,测量的荧光与细胞内的核DNA量呈比例和化学计量比。测量不到mtDNA结合,与RNA结合可忽略。8)兼容于台式流式细胞仪、激光扫描细胞仪和非紫外激光扫描和基于灯泡的共聚焦显微镜。

染料特性

1)   化学名称:1, 5-bis{[2-(di-methylamino)ethyl]amino}-4, 8-dihydroxyanthracene-9, 10-dione 1,5-双{[2-(二甲基氨基)乙基]氨基}-4, 8-二羟基蒽-9,10-二酮

2)   分子量:412.54

3)   激发波长:最理想647nm处(Eλmax= 646 nm); 次理想488,514,568和633nm处

4)   发射波长(取决于仪器):665nm至红外(Emλmax= 681nm/697nm,掺入 dsDNA)

          与可见光区比如:GFP和FITC,最小重叠;发射滤片可能包括:695L, 715LP 或780 LP

保存与运输方法

保存:2-8°C避光保存,2年有效。不可冻存!

运输:室温运输。

注意事项

1)DRAQ5(5mM)不可冻存,但冻存会导致染料析出,且很难(不可能)重溶回溶液。

2)DRAQ5是Biostatus Limited的商标名。

3)荧光染料都存在淬灭的问题,保存和操作过程中注意避光。

4)为了您的安全和健康,请穿实验服并戴一次性手套操作。

染色步骤

1)根据所需步骤执行表面染色;

2)PBS清洗细胞两次。叠氮钠影响DRAQ5染色,建议用PBS(不含钙镁或叠氮钠)或细胞培养基来染色。

3)稀释DRAQ5到所需浓度。推荐做浓度滴定来确定最佳的工作浓度。用于流式细胞仪和显微成像检测, 1:200~1:1000的稀释倍数(5-25µM)能获得良好的染色结果。

4)室温避光孵育10-15min。

5)用装有633红色激发器的细胞仪进行细胞分析。做细胞周期分析时,用带680LP或715LP滤片的Alexa 700通道可能有助于分辨发射峰。

延伸阅读(比较PI和DRAQ5的细胞周期分析)

Yuan C. M. et al. DRAQ5-Based DNA content analysis of hematolymphoid cell subpopulations discriminated by surface antigens and light scatter properties. Cytometry B 58, 47–52 (2004).

DNA Staining

For DRAQ5 staining, 3 × 105 cells in 250 μL of PBS, previously stained for surface antigens were incubated with 2 μL of DRAQ5 for 5 min at room temperature and protected from bright light.

For PI staining, reagents from CycleTEST Plus (BD), were used according to manufacturer’s recommendations. In summary, cells were exposed to a trypsin solution for 10 min at room temperature, followed by a solution containing trypsin and RNAse A, and subsequently incubated in PI for 10 min at 4°C at a final concentration of 125 μg/ml.

Data Acquisition

Cells were acquired on a FACSCalibur four-color flow cytometer (BD) equipped with both a 488-nm argon laser and a 635-nm diode laser. The data were acquired using CellQuest software (BD). Acquisition of the whole sample was performed without gating to exclude cell doublets and debris. The total number of cells collected in each case ranged from 40 × 103 to 50 × 103.

Data Analysis

For DRAQ5 and PI comparisons, DNA cell cycle analysis was performed on unselected populations. DRAQ5-based DNA content analysis of discrete marrow subpopulations was performed by identifying and selecting those subpopulations by CD45 expression and side scatter properties. The following cell types were identified: lymphocytes, monocytes, mature granulocytes, immature granulocytes, nucleated erythroid cells, and early precursors (blast region). The latter population was defined by CD34 expression, along with intensity of CD45 expression and side scatter. Each subpopulation’s data were saved as separate Flow Cytometry Standard files using CellQuest software (BD), and analyzed for cell cycle phases using Modfit LT 3.1 (Verity Software House, Topsham, MA).

DNA content analysis included determination of the mean channel fluorescence and the coefficient of variation (CV) of the G1 peaks, number of cell doublets, and S-phase fractions. All data were generated using the Autoanalysis function of the Modfit LT 3.1 program, with active aggregates and debris modeling, according to software manufacturer’s recommendations. Paired t-test was used for statistical calculations.

For the purposes of data display and creation of figures, dot plots were generated using WinMDI 2.8 (Joe Trotter, Scripps Institute).

Table 1. Comparison Between DRAQ5 and PI Derived Cell Cycle Analysis Parameters in a Variety of Hematolymphoid Samples

Coefficient of variation of G0/G1peak S-phase (%) Cell doublets (%)
PI DRAQ5 PI DRAQ5 PI DRAQ5
Mean 2.9 4.3 8.9 7.8 1.7 1.2
SD 0.55 0.61 5.56 5.13 0.8 0.7
P value (paired t-test) <0.0005 0.4 <0.003

Figure 1

Examples of two cases stained in duplicate with DRAQ5 and PI. The first case exhibits a single G0/G1 peak (A) and the second case exhibits two G0/G1 peaks (B), representing aneuploidy. CV1 corresponds to the first G0/G1 peak located approximately at channel 50 and CV2 corresponds to the second G0/G1 peak (aneuploid G0/G1 peak). DRAQ5 produces slightly larger CVs than PI in both cases (A,B). An identical DNA index (DI) of the second G0/G1 peak (B) was obtained with both DRAQ5 and PI staining.

常见问题

1)DRAQ5能用于哪种细胞类型的染色?

2)DRAQ5用于哪些类型的实验?

3)如果检测样本内含更多细胞,需要加入更多的DRAQ5?

4)DRAQ5能染色线粒体或RNA?

5)为什么DRAQ5染色的细胞不需要清洗?

6)DRAQ5染色可用抗荧光封片剂?

答:是的。

7)如果DRAQ5用于活细胞染色,可以做长期实验吗?

答:不行。

8)哪些荧光素能与DRAQ5同时使用?

9)DRAQ5工作液能保存多久?

答:建议稀释后的DRAQ5工作液尽快使用,不要保存工作液。

相关产品

货号 名称 规格
MF0756-1G Ethidium Bromide (EB)溴化乙锭 1g
MF0756-5ML EB (10 mg/ml in Water) EB水溶液(10 mg/ml) 5ml
MX4205-10MG Propidium Iodide碘化丙啶(粉末) 10mg
MX4205-1ML Propidium Iodide (1mg/ml)碘化丙啶(1mg/ml) 1ml
MX4212-5MG Ethidium Monoazide Bromide (EMA)叠氮溴化乙锭 5mg
MX4213-1MG Ethidium Homodimer 1 (EthD-1)溴乙啡锭二聚体1 1mg
MX4214-1MG Ethidium Homodimer 3 (EthD-3)溴乙啡锭二聚体3 1mg
MX4215-1MG 7-AAD (7-Aminoactinomycin D) 7-氨基放线菌素D 1mg
MX4217-1G Acridine Orange Hydrochloride吖啶橙盐酸盐 1g
MX4219-50UL DRAQ5 (5mM)远红外DNA染料 50µl
MX4220-1MG Propidium Monoazide (PMA)叠氮溴化丙锭 1mg
MX4235-25MG LDS 751 Nucleic Acid Stain核酸染色剂 25mg
MX4237-250UL DRAQ7 (0.3mM)远红外DNA染料 250µl

DRAQ5 (5mM) 远红外DNA染料

DRAQ5;DRAQ7;Anthraquinone dye 蒽醌染料;DNA染料;7-AAD;细胞周期分析;染色体倍性分析;有核/无核细胞区分;

产品信息

产品名称

产品编号 规格

DRAQ5 (5mM)远红外DNA染料

MX4219-50UL 50µl

DRAQ5 (5mM)远红外DNA染料 MX4219-200UL 200µl

产品描述

DRAQ5是一种细胞通透性的远红外DNA染料,能联合其它常见的标记染料比如:GFP或FITC,用于固定或非固定/活细胞的染色。与任何其它细胞通透性的DNA嵌入染料一样,DRAQ5在长期实验中可能抑制细胞分裂,需测定染料可能的任何效应。

DRAQ5能用于流式细胞仪、活细胞成像和基于细胞的各种实验,DRAQ5高度兼容于许多仪器平台上的标准实验方案。DRAQ5染色包含这些优势:1)以便捷的即用型水溶性溶液形式提供;2)能被活细胞快速摄取,提供高水平的细胞核辨别力;3)无光漂白效应;4)适用于绝大多数细胞,真核和原核来源:哺乳动物、细菌、寄生虫、植物等;5) 流式细胞检测中与常见的FITC/GFP+PE结合实验无需做荧光补偿;6)不需要RNase处理;7)与DNA结合后没有荧光增强,因此,测量的荧光与细胞内的核DNA量呈比例和化学计量比。测量不到mtDNA结合,与RNA结合可忽略。8)兼容于台式流式细胞仪、激光扫描细胞仪和非紫外激光扫描和基于灯泡的共聚焦显微镜。

染料特性

1)   化学名称:1, 5-bis{[2-(di-methylamino)ethyl]amino}-4, 8-dihydroxyanthracene-9, 10-dione 1,5-双{[2-(二甲基氨基)乙基]氨基}-4, 8-二羟基蒽-9,10-二酮

2)   分子量:412.54

3)   激发波长:最理想647nm处(Eλmax= 646 nm); 次理想488,514,568和633nm处

4)   发射波长(取决于仪器):665nm至红外(Emλmax= 681nm/697nm,掺入 dsDNA)

          与可见光区比如:GFP和FITC,最小重叠;发射滤片可能包括:695L, 715LP 或780 LP

保存与运输方法

保存:2-8°C避光保存,2年有效。不可冻存!

运输:室温运输。

注意事项

1)DRAQ5(5mM)不可冻存,但冻存会导致染料析出,且很难(不可能)重溶回溶液。

2)DRAQ5是Biostatus Limited的商标名。

3)荧光染料都存在淬灭的问题,保存和操作过程中注意避光。

4)为了您的安全和健康,请穿实验服并戴一次性手套操作。

染色步骤

1)根据所需步骤执行表面染色;

2)PBS清洗细胞两次。叠氮钠影响DRAQ5染色,建议用PBS(不含钙镁或叠氮钠)或细胞培养基来染色。

3)稀释DRAQ5到所需浓度。推荐做浓度滴定来确定最佳的工作浓度。用于流式细胞仪和显微成像检测, 1:200~1:1000的稀释倍数(5-25µM)能获得良好的染色结果。

4)室温避光孵育10-15min。

5)用装有633红色激发器的细胞仪进行细胞分析。做细胞周期分析时,用带680LP或715LP滤片的Alexa 700通道可能有助于分辨发射峰。

延伸阅读(比较PI和DRAQ5的细胞周期分析)

Yuan C. M. et al. DRAQ5-Based DNA content analysis of hematolymphoid cell subpopulations discriminated by surface antigens and light scatter properties. Cytometry B 58, 47–52 (2004).

DNA Staining

For DRAQ5 staining, 3 × 105 cells in 250 μL of PBS, previously stained for surface antigens were incubated with 2 μL of DRAQ5 for 5 min at room temperature and protected from bright light.

For PI staining, reagents from CycleTEST Plus (BD), were used according to manufacturer’s recommendations. In summary, cells were exposed to a trypsin solution for 10 min at room temperature, followed by a solution containing trypsin and RNAse A, and subsequently incubated in PI for 10 min at 4°C at a final concentration of 125 μg/ml.

Data Acquisition

Cells were acquired on a FACSCalibur four-color flow cytometer (BD) equipped with both a 488-nm argon laser and a 635-nm diode laser. The data were acquired using CellQuest software (BD). Acquisition of the whole sample was performed without gating to exclude cell doublets and debris. The total number of cells collected in each case ranged from 40 × 103 to 50 × 103.

Data Analysis

For DRAQ5 and PI comparisons, DNA cell cycle analysis was performed on unselected populations. DRAQ5-based DNA content analysis of discrete marrow subpopulations was performed by identifying and selecting those subpopulations by CD45 expression and side scatter properties. The following cell types were identified: lymphocytes, monocytes, mature granulocytes, immature granulocytes, nucleated erythroid cells, and early precursors (blast region). The latter population was defined by CD34 expression, along with intensity of CD45 expression and side scatter. Each subpopulation’s data were saved as separate Flow Cytometry Standard files using CellQuest software (BD), and analyzed for cell cycle phases using Modfit LT 3.1 (Verity Software House, Topsham, MA).

DNA content analysis included determination of the mean channel fluorescence and the coefficient of variation (CV) of the G1 peaks, number of cell doublets, and S-phase fractions. All data were generated using the Autoanalysis function of the Modfit LT 3.1 program, with active aggregates and debris modeling, according to software manufacturer’s recommendations. Paired t-test was used for statistical calculations.

For the purposes of data display and creation of figures, dot plots were generated using WinMDI 2.8 (Joe Trotter, Scripps Institute).

Table 1. Comparison Between DRAQ5 and PI Derived Cell Cycle Analysis Parameters in a Variety of Hematolymphoid Samples

Coefficient of variation of G0/G1peak S-phase (%) Cell doublets (%)
PI DRAQ5 PI DRAQ5 PI DRAQ5
Mean 2.9 4.3 8.9 7.8 1.7 1.2
SD 0.55 0.61 5.56 5.13 0.8 0.7
P value (paired t-test) <0.0005 0.4 <0.003

Figure 1

Examples of two cases stained in duplicate with DRAQ5 and PI. The first case exhibits a single G0/G1 peak (A) and the second case exhibits two G0/G1 peaks (B), representing aneuploidy. CV1 corresponds to the first G0/G1 peak located approximately at channel 50 and CV2 corresponds to the second G0/G1 peak (aneuploid G0/G1 peak). DRAQ5 produces slightly larger CVs than PI in both cases (A,B). An identical DNA index (DI) of the second G0/G1 peak (B) was obtained with both DRAQ5 and PI staining.

常见问题

1)DRAQ5能用于哪种细胞类型的染色?

2)DRAQ5用于哪些类型的实验?

3)如果检测样本内含更多细胞,需要加入更多的DRAQ5?

4)DRAQ5能染色线粒体或RNA?

5)为什么DRAQ5染色的细胞不需要清洗?

6)DRAQ5染色可用抗荧光封片剂?

答:是的。

7)如果DRAQ5用于活细胞染色,可以做长期实验吗?

答:不行。

8)哪些荧光素能与DRAQ5同时使用?

9)DRAQ5工作液能保存多久?

答:建议稀释后的DRAQ5工作液尽快使用,不要保存工作液。

相关产品

货号 名称 规格
MF0756-1G Ethidium Bromide (EB)溴化乙锭 1g
MF0756-5ML EB (10 mg/ml in Water) EB水溶液(10 mg/ml) 5ml
MX4205-10MG Propidium Iodide碘化丙啶(粉末) 10mg
MX4205-1ML Propidium Iodide (1mg/ml)碘化丙啶(1mg/ml) 1ml
MX4212-5MG Ethidium Monoazide Bromide (EMA)叠氮溴化乙锭 5mg
MX4213-1MG Ethidium Homodimer 1 (EthD-1)溴乙啡锭二聚体1 1mg
MX4214-1MG Ethidium Homodimer 3 (EthD-3)溴乙啡锭二聚体3 1mg
MX4215-1MG 7-AAD (7-Aminoactinomycin D) 7-氨基放线菌素D 1mg
MX4217-1G Acridine Orange Hydrochloride吖啶橙盐酸盐 1g
MX4219-50UL DRAQ5 (5mM)远红外DNA染料 50µl
MX4220-1MG Propidium Monoazide (PMA)叠氮溴化丙锭 1mg
MX4235-25MG LDS 751 Nucleic Acid Stain核酸染色剂 25mg
MX4237-250UL DRAQ7 (0.3mM)远红外DNA染料 250µl

DRAQ5;252903-95-0

DRAQ5 是一种蒽醌染料,对双链 DNA 具有高亲和力。 它是一种可渗透膜的染料,可以标记活细胞或固定/死细胞。 在流式细胞术中,这种染料可用于区分有核细胞和无核细胞。 DRAQ5还可用于报告核 DNA 含量以进行倍性和细胞周期分析,因为它以化学计量方式结合 DNA。 在荧光显微镜下,它可以用作核复染剂。

产品名称 DRAQ5;252903-95-0
目录号 910818
中文名称 远红外荧光活细胞 DNA 染料
英文名称 DRAQ5
CAS 252903-95-0
分子式 C22H28N4O4
分子量 412.49
存储条件 -20°干燥避光
保存时间 一年
Ex/Em(nm) 646/697