使用序列特异性探针进行快速的多重两步法RT-PCR,适用于基因表达分析

  • 灵敏检测单管中的多个目标
  • 快速获得结果,可节省多达50%的时间
  • 无需优化,即可成功进行多重PCR
  • 准确区分起始量相近的模板

应用QuantiFast Multiplex PCR Kit可在单管内通过多重两步法real-time PCR对多至4个cDNA进行快速、可靠的定量检测。Q-Bond和优化的预混液促进快速多重real-time PCR的进行,适用于快速或标准PCR仪。即用型预混液中的热启动酶和独特的PCR缓冲液可确保在所有real-time PCR仪上进行灵敏的qPCR,无需优化。有两种规格的试剂盒:QuantiFast Multiplex PCR Kit适用于需要ROX染料进行荧光信号校准的PCR仪,QuantiFast Multiplex PCR +R Kit适用于其他所有PCR仪。为便于使用,预混液可保存在2–8°C。

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QuantiFast Multiplex PCR Kit (80)
Trial kit for 80 x 25 µl reactions: 1 ml 2x QuantiFast Multiplex PCR Master Mix (with ROX dye), 2 ml RNase-Free Water
204652
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QuantiFast Multiplex PCR Kit (400)
For 400 x 25 µl reactions: 3 x 1.7 ml 2x QuantiFast Multiplex PCR Master Mix (with ROX dye), 2 x 2 ml RNase-Free Water
204654
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QuantiFast Multiplex PCR Kit (2000)
For 2000 x 25 µl reactions: 25 ml 2x QuantiFast Multiplex PCR Master Mix (with ROX dye), 20 ml RNase-Free Water
204656
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QuantiFast Multiplex PCR +R Kit (80)
Trial kit for 80 x 25 µl reactions: 1 ml 2x QuantiFast Multiplex PCR Master Mix (without ROX dye), 45 µl ROX Dye Solution, 2 ml RNase-Free Water
204752
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QuantiFast Multiplex PCR +R Kit (400)
For 400 x 25 µl reactions: 3 x 1.7 ml 2x QuantiFast Multiplex PCR Master Mix (without ROX dye), 210 µl ROX Dye Solution, 2 x 2 ml RNase-Free Water
204754
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QuantiFast Multiplex PCR +R Kit (2000)
For 2000 x 25 µl reactions: 25 ml 2x QuantiFast Multiplex PCR Master Mix (without ROX dye), 1.05 ml ROX Dye Solution, 20 ml RNase-Free Water
204756
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QuantiFast Multiplex PCR +R Kit (4000)
For 4000 x 25 µl reactions: 2 x 25 ml 2x QuantiFast Multiplex PCR Master Mix (without ROX dye), 2 x 1.05 ml ROX Dye Solution, 20 ml RNase-Free Water
204757
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QuantiFast Multiplex PCR Kits are intended for molecular biology applications. These products are not intended for the diagnosis, prevention, or treatment of a disease.


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Significantly reduced PCR times.|Sensitive duplex PCR and wide dynamic range.|Comparable results in triplex and singleplex PCR.|Uncompromised sensitivity.|Fast primer annealing.|QIAGEN multiplex kits.|Unique PCR buffer.|Linear CT values over twofold decreases in template.|
QuantiFast Multiplex Kits reduce total PCR run time by up to 50% in real-time two-step RT-PCR (40 cycles run; comparison with QuantiTect Multiplex Kits). I: iCycler iQ; L1: LightCycler 480; L2: LightCycler 2.0; A1: ABI PRISM 7900; A2: Applied Biosystems 7500 Fast System; M: Mx3005P.
|Duplicate reactions were run on the Applied Biosystems 7500 Fast System using a DNA template mix providing 108 copies of β-actin (data shown in insets) and 106 to 10 copies of RPS27A (a ribosomal protein). The [A] QuantiFast Multiplex PCR +R Kit showed clearly higher sensitivity than the [B] duplex PCR kit from Supplier AII, enabling the cycler in fast-cycling mode to detect 10 copies of target and quantify over 6 log dilutions of template.|Triplex and singleplex PCR were carried out on the LightCycler 480 using the QuantiFast Multiplex PCR +R Kit and Primer Express designed TaqMan assays for [A] RPS27A (a ribosomal protein), [B] GAPDH (a housekeeping gene), and [C] UBC (a housekeeping gene). The template was HeLa cell cDNA (10 ng, 1 ng, or 0.1 ng), and reactions were run in duplicate. The comparable CT values for triplex PCR (colored curves) and singleplex PCR (gray curves) demonstrate the reliability of triplex PCR with the QuantiFast Multiplex PCR +R Kit when analyzing targets of differing abundance.|4-plex, real-time PCR was carried out using the QuantiFast Multiplex PCR +R Kit and Primer Express designed TaqMan assays on the Applied Biosystems 7500 Fast System. Triplicate reactions were run using 10 ng Ramos cell line cDNA.|[A] Q-Bond in QuantiFast Buffer allows the DNA polymerase and primer to bind as a single complex, reducing the annealing time to a few seconds. In addition, the unique buffer composition supports the melting of DNA, reducing denaturation and extension times. [B] Without Q-Bond, the primer and polymerase bind sequentially to the template, increasing annealing time.|QuantiFast Multiplex PCR Kits provide a simple procedure for quantitative, multiplex, real-time PCR. In contrast to current methods, the kits eliminate the need for optimization of the concentrations of primers, Mg2+, and Taq DNA polymerase, even for difficult assays (e.g., assays in which the copy number of the target gene is much smaller than that for the reference gene).|[A] NH4+ ions prevent nonspecific primers from annealing to the template. [B] Synthetic Factor MP, an innovative PCR additive, increases the local concentration of primers at the template. Together with K+ and other cations, Factor MP stabilizes specifically bound primers, allowing efficient primer extension by HotStarTaq Plus DNA Polymerase.|Duplex and singleplex PCR were carried out using the QuantiFast Multiplex PCR +R Kit and assays for the t(8;14) chromosomal translocation and for GAPDH on the Applied Biosystems 7500 Fast System. Quadruplicate reactions were run using genomic DNA from the Ramos cell line as template (twofold dilutions from 10 ng to 0.625 ng). CT values increased linearly by 1 CT value with decrease in template dilution for both the [A] singleplex and [B] duplex reactions, demonstrating the ability of the kit to precisely discriminate between small differences in template amount.|
Performance

随QuantiFast Multiplex PCR Kit提供的特制的预混液可快速构建多重反应,得到的多重PCR反应结果可与单重PCR反应结果相媲美(参见"Comparable results in triplex and singleplex PCR")。该试剂盒可清楚区分模板量的细微差别。即使模板量仅有两倍的差别,该试剂盒也能精确定量丰度差别较大的2个靶基因(参见"Linear CT values over twofold decreases in template")。

QuantiFast Multiplex PCR Kits可节省多达50%的PCR反应时间,让您更快获得结果(参见"Significantly reduced PCR times")。只需60分钟,即可检测到低至10个拷贝的靶基因(参见"Sensitive duplex PCR and a wide dynamic range")。您可极大地提高样本通量或与其它使用者有效地共享PCR仪。该试剂盒可对多达4个靶基因进行快速、多重real-time PCR,且不会影响PCR效果(参见"Uncompromised sensitivity")。

Principle

QuantiFast Multiplex PCR Kits可在标准或快速PCR仪上快速、灵敏的获得反应结果,无需优化(参见"QIAGEN multiplex kits")。特制的快速PCR缓冲液含有新型Q-Bond成分,可明显缩短变性、退火和延伸的时间(参见"Fast primer annealing")。

在同一个反应中同时扩增对照和靶基因,而非分开反应,减少了操作误差,提高了检测的可靠性。QuantiFast Multiplex PCR Buffer 含有平衡配比的K+和NH4+以及独特的MP因子,二者可促进引物、探针与核酸模板的稳定高效结合,确保高效的PCR反应(参见"Unique PCR buffer")此外,HotStarTaq Plus DNA Polymerase要求严谨的热启动,可阻止非特异性产物的形成。

2x QuantiFast Multiplex PCR Kit的成分*
成分 特点 优势
HotStarTaq Plus DNA Polymerase 95ºC加热5分钟活化 在室温进行qPCR反应体系构建
QuantiFast Multiplex PCR Buffer 平衡的NH4+和K+离子配比 引物探针的特异性结合确保获得可靠结果
合成的MP因子 在单管中可靠的对至多4个基因进行多重分析
独特的Q-Bond添加剂 PCR运行时间缩短,更快获得结果,一天内可完成更多PCR反应
ROX染料 对Applied Biosystems和Agilent PCR仪进行荧光信号的校准 对需要ROX染料的PCR仪进行校准,不影响PCR反应结果
*也含有dNTP混合液(dATP、dCTP、dGTP和dTTP)。 ROX染料或者在预混液中,或者另外提供。
Procedure

QuantiFast Multiplex PCR Kit含有即用型预混液,无需优化反应及循环条件。只需将cDNA和引物探针对加入预混液中,按照操作手册进行实验,即可快速获得可靠的结果,适用于所有real-time PCR仪。试剂盒提供两种形式:预混液中含有或不含荧光校正用的ROX染料,可用于所有PCR仪(参见下表)。由于ROX浓度经优化,即使是低拷贝数也可通过数据自动分析进行检测。

选择合适的QuantiFast Multiplex PCR Kit
ROX染料试剂盒 适用的PCR仪
混合在预混液中 QuantiFast Multiplex PCR Kit 除Applied Biosystems 7500外的所有Applied Biosystems仪器
单独装在管中 QuantiFast Multiplex PCR +R Kit Applied Biosystems 7500、Bio-Rad、Cepheid、Eppendorf、QIAGEN、Roche、Agilent和其他供应商的PCR仪

为获得最佳的两步法real-time RT-PCR结果,我们建议使用QuantiTect Reverse Transcription Kit合成cDNA。该试剂盒可在20分钟进行快速cDNA合成,并去除基因组DNA污染。

QuantiFast Probe Assays利用序列特异性水解探针检测技术,是适合全基因组的预制试剂。 随QuantiFast Multiplex PCR Kit提供,可确保在双染两步法real-time RT-PCR反应中获得可靠结果。 

Applications

QuantiFast Multiplex PCR Kit可用在各种real-time PCR仪上对cDNA进行多重基因表达分析,适用仪器包括Agilent、Applied Biosystems、Bio-Rad、Cepheid、Eppendorf和Roche的PCR仪。在Rotor-Gene Q实时荧光定量PCR分析仪或其他Rotor-Gene PCR仪上使用时,我们推荐使用专为快速PCR研发的Rotor-Gene Multiplex PCR Kit。

Feature
Specifications
Applications Quantification of cDNA or genomic DNA targets in a multiplex real-time PCR
Reaction type Real-time two-step RT-PCR
Real-time or endpoint Real-time
Sample/target type cDNA, DNA
Single or multiplex Multiplex
SYBR Green I or sequence-specific probes Sequence-specific probes
Thermal cycler Real-time cyclers dedicated for multiplex PCR (e.g., most Applied Biosystems real-time PCR cyclers, Roche LightCycler® 480, iCycler iQ®, Rotor-Gene)
With or without ROX Available with ROX in master mix and with ROX as separate vial

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Kit Handbooks
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For quantitative, multiplex, real-time PCR and two-step RT-PCR with fast cycling using sequence-specific probes
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