For real-time PCR and two-step RT-PCR using SYBR Green
High PCR specificity with integrated hot start
Reliable quantification of low-abundance transcripts
Accurate quantification over several logs of template
Available with or without uracil-N-glycosylase (UNG)
No need to optimize reaction and cycling conditions
The QuantiTect SYBR Green PCR Kit provides highly specific quantification of gDNA and cDNA targets by real-time PCR and two-step RT-PCR using SYBR Green I detection. The combination of a hot start and a unique qPCR buffer system ensures highly specific and sensitive real-time quantification of gDNA and cDNA targets. The dNTP mix includes dUTP, allowing optional treatment with UNG. For convenience, the master mix can be stored at 2–8°C.
For 200 x 50 µl reactions: 3 x 1.7 ml 2x QuantiTect SYBR Green PCR Master Mix, 100 µl UNG Solution, 2 x 2 ml RNase-Free Water
QuantiTect SYBR® Green PCR Kits are intended for molecular biology applications. These products are not intended for the diagnosis, prevention, or treatment of a disease.
Highly sensitive quantification on the ABI PRISM 7700.
Template ranging from 1 x 106 to 5 copies of a plasmid containing a human CFTR gene fragment (in a background of 50 ng maize genomic DNA with no CFTR gene) was amplified on the ABI PRISM 7700. CFTR (cystic fibrosis transmembrane conductance regulator) is a cAMP-regulated chloride channel. NTC: No template control.
Specific quantification over a wide linear range.
Dilutions of human leukocyte cDNA were analyzed using the QuantiTect Primer Assay for human BAX and the indicated kits on the Rotor-Gene 3000. Highly specific quantification with the QuantiTect Kit and Assay is demonstrated by the single peak in melting curve analysis and the flat curve for the NTC reaction. NTC: No template control. Norm. Fluoro.: Normalized fluorescence.
Specific and sensitive quantification.
Dilutions of human leukocyte cDNA were analyzed using the QuantiTect Primer Assay for human IL8 and the indicated kits on the Applied Biosystems 7500. Only the combination of QuantiTect Kit and Assay provided highly specific quantification, as demonstrated by the single peak in melting curve analysis and the flat curve for the NTC reaction. NTC: No template control.
High specificity in real-time PCR.
SYBR® Green-based real-time PCR with UNG pretreatment was carried out using either [A] the QuantiTect SYBR® Green PCR +UNG Kit or [B] a kit and UNG from Supplier R. Reactions were run in duplicate on the LightCycler 480 using 10-fold dilutions of human leukocyte cDNA (100 ng to 100 pg) and a QuantiTect Primer Assay for Myc (a protooncogene). Melting curve analysis (see insets) revealed higher PCR specificity with the QuantiTect Kit than with the kit from Supplier R.
Performance
QuantiTect SYBR Green PCR Kits allow specific quantification over a wide linear range (see figure "Specific quantification over a wide linear range"). HotStarTaq DNA Polymerase provides the most stringent hot start compared with other polymerases, further increasing the specificity of the reaction (see figure "Highly specific amplification"). The unique composition of PCR buffer and HotStarTaq DNA Polymerase enable quantification of even low-abundance transcripts — as few as 5 copies of a target can be accurately detected (see figure "Highly sensitive quantification"). When used in combination with the QuantiTect Reverse Transcription Kit and QuantiTect Primer Assays, the QuantiTect SYBR Green PCR Kit delivers sensitive and reliable results (see figure "Specific and sensitive quantification").
The combination of the specially optimized UNG solution and the proven PCR master mix in the QuantiTect SYBR Green PCR +UNG Kit ensures effective elimination of carried-over PCR products together with reliable quantification of target sequences (see figure "High specificity in real-time PCR").
Principle
QuantiTect SYBR Green PCR Kits contain an optimized, ready-to-use master mix for highly specific and sensitive real-time quantification cDNA targets using SYBR Green I. The fluorescent dye SYBR Green I in the master mix enables the analysis of many different targets without having to synthesize target-specific labeled probes. A balanced combination of K+ and NH4+ ions in the PCR buffer promotes specific primer annealing and enables high PCR specificity and sensitivity (see figure "Specific primer annealing"). In addition, HotStarTaq DNA Polymerase provides a stringent hot start, preventing the formation of nonspecific products.
QuantiTect SYBR Green PCR master mix also contains dUTP, enabling pretreatment with uracil-N-glycosylase (UNG) prior to starting PCR, which ensures that any contaminating PCR products do not affect subsequent PCR reactions.
Components of 2x QuantiTect SYBR Green PCR Kit
Component
Features
Benefits
HotStarTaq DNA Polymerase
15 min activation at 95ºC
Set-up of qPCR reactions at room temperature
QuantiTect SYBR Green PCR Buffer
Balanced combination of NH4+ and K+ ions
Specific primer annealing ensures reliable PCR results
dNTP mix
Includes dUTP, which partially replaces dTTP and enables optional UNG treatment of reactions
Eliminates contamination from carryover of PCR products by optional UNG treatment
SYBR Green I dye
Yields a strong fluorescent signal upon binding double-stranded DNA
Highly sensitive quantification
ROX dye
For normalization of fluorescent signals on Applied Biosystems and, optionally, Agilent instruments
Precise quantification on cyclers that require ROX dye. Does not interfere with reactions on other real-time cyclers
Procedure
QuantiTect SYBR Green PCR Kits overcome the need for optimization of reaction conditions, which can be tedious and time-consuming. Simply add primers and DNA template to the ready-to-use PCR master mix, and start the reaction (see flowchart "Two-step RT-PCR"). Follow the protocol in the handbook to get fast and reliable results on any real-time cycler. If required, reactions can be pretreated with uracil-N-glycosylase (UNG) to eliminate carryover of PCR products from previous reactions.
For optimal results in real-time two-step RT-PCR, we recommend synthesizing cDNA using the QuantiTect Reverse Transcription Kit. The kit provides fast cDNA synthesis in just 20 minutes with integrated removal of genomic DNA contamination.
Highly specific results in gene expression analysis are guaranteed when QuantiTect SYBR Green PCR Kits are used in combination with QuantiTect Primer Assays. These are genomewide, bioinformatically validated primer sets for detecting transcripts from human, mouse, rat, and many other species. QuantiTect Primer Assays can be easily ordered online at GeneGlobe.
Applications
The QuantiTect SYBR Green PCR Kit is for use in gene expression analysis of cDNA targets and quantitative gDNA analysis. QuantiTect SYBR Green PCR Kits are compatible with all available real-time cyclers, including instruments from Applied Biosystems, Bio-Rad, Cepheid, Eppendorf, Roche, and Agilent. For the Rotor-Gene Q and other Rotor-Gene cyclers, we recommend using the Rotor-Gene SYBR Green PCR Kit, which has been specially developed for fast cycling on these instruments.
Features
Specifications
Applications
Real-time quantification of genomic DNA or cDNA targets
For 200 x 20 µl reactions: 4 x 100 µl 7x gDNA Wipeout Buffer, 4 x 50 µl Quantiscript Reverse Transcriptase, 4 x 200 µl 5x Quantiscript RT Buffer, 4 x 50 µl RT Primer Mix, 4 x 1.9 ml RNase-Free Water
For 100 x 50 µl reactions: QIAGEN OneStep RT-PCR Enzyme Mix (1 x 200 µl), 5x QIAGEN OneStep RT-PCR Buffer (1 x 1 ml), dNTP Mix (1 x 200 µl, 10 mM each), 5x Q-Solution (1 x 2 ml), RNase-Free Water (2 x 1.9 ml)
