SCRIPT Direct RT-qPCR ProbesMaster highROX

Robust real-time RT-PCR master mix with ROX

for highly sensitive and specific amplification directly from tissue, swabs or blood

Catálogo Nº Apresentação Preço (R$) Comprar
PCR-529S 2 x 1,25 ml (250 reactions x 20 μl)Sob demanda Adicionar ao Carrinho
PCR-529L 10 x 1,25 ml (1250 reactions x 20 μl)Sob demanda Adicionar ao Carrinho

For general laboratory use.

Envio: shipped on gel packs

Condições de armazenamento: store at -20 °C
avoid freeze/thaw cycles
stable at 4 °C for up to 4 weeks

Validade: 12 months

Forma: liquid

Concentração: 2x

Descrição:
SCRIPT Direct RT-qPCR ProbesMaster highROX is designed for quantitative real-time analysis of target RNA directly from animal- or plant tissue, swabs and blood. The mix allows robust amplification avoiding the requirement of any prior RNA purification procedures.
The mix is recommended for use with dual-labeled fluorescent probes, e.g. TaqMan®, Molecular Beacon or Scorpion probes. It provides a powerful tool for multiplex-quantification of sample RNA in a broad dynamic range with exceptional sensitivity and precision.
The mix contains all reagents required for RT-qPCR (except template, primer and labeled fluorescent probe) in a premixed 2 x concentrated ready-to-use solution. High robustness, reliability and sensitivity of the mix are based on a genetically engineered reverse transcriptase and an antibody-blocked hot start polymerase in combination with an optimized and well-balanced buffer system.
The mix ensures fast and easy preparation with a minimum of pipetting steps and is specially recommended for:
Direct amplification of target RNA from various tissues samplesDirect detection of viral or bacterial RNA in nasal or throat swabsDirect PCR from blood samplesPoint-of-Care diagnostics
Multiplexing Capability
Real-time RT-PCR technology based on dual-labeled DNA probes provides a high sensitive and specific RT-PCR system with multiplexing capability. The simultaneous detection of multiple targets in a single tube requires a primer/probe set for each target amplification. Sequences and concentrations of primers and probes should be optimized to avoid mutual influence, secondary structures and primer-dimer formations. Amplification of each target is detected in a separate fluorescence channel.

ROX Reference Dye
SCRIPT Direct RT-qPCR ProbesMaster highROX contains 500 nM ROX passive reference dye in the final assay. The dye does not take part in the PCR reaction but allows normalization for non-PCR related signal variation and provides a baseline in multiplex reactions. The reaction chemistry of the kit is optimized for real-time cyclers that are compatible with the evaluation of the ROX reference signal.

Contente:
SCRIPT Direct RT-qPCR ProbesMaster highROX
2x conc. mix of Reverse Transcriptase, antibody-blocked Hot Start polymerase, dNTPs, ROX, reaction buffer, additives and stabilizers

Extraction Buffer (Please handle with care and wear personal protective equipment!)
10x conc.

PCR-grade Water

Procedure
Before starting, take reagents out from fridge and allow to thaw completely. Vortex all reagents briefly and spin down the liquids.

1. Sample preparation
1.a Blood Samples / Liquid Samples
Dilute 10x Extraction Buffer to 1x concentrated Buffer with PCR-grade water.Transfer 2 μl of the Blood/Liquid Sample into a tube containing 100 μl to 200 μl of 1x concentrated Extraction Buffer (a dilution of Blood 1:50 to 1:100 in 1x Extraction Buffer is recommended).Close the tube and vortex for 15 secIncubate the tube at room temperature (20-25 °C) for 2-3 min.Transfer 1-2 μl of the supernatant into a 20 μl RT-qPCR assay or 2-5 μl into a 50 μl RT-qPCR assay (see table for Preparation of the RT-qPCR Assay below).
1.b Samples from nasal or throat swabs
Dilute 10x Extraction Buffer to 1x concentrated Buffer with PCR-grade water.Transfer 200 μl 1x Extraction Buffer into a 1.5 ml microtubeCut off the cotton tip with the collected nasal or throat swab and place it in the micro tubeClose the tube and vortex for 15 secIncubate at room temperature (20-25 °C) for 2-3 minRemove the cotton tip and squeeze it out at the rim of the tubeCentrifuge briefly and transfer 1-2 μl of the supernatant into a 20 μl RT-qPCR assay or 2-5 μl into a 50 μl RT-qPCR assay (see table for Preparation of the RT-qPCR Assay below).
1.c Samples from Animal or Plant Tissue
Dilute 10x Extraction Buffer to 1x concentrated Buffer with PCR-grade water.Prepare a small piece from animal or plant tissue not exceeding 8 mm in diameterCrack plant seeds to less than 1 mm in diameter using a BeadBeater, Tissue Lyser or small hammerPlace the sample in a 1.5 ml microtubeAdd 1x concentrated Extraction Buffer to the tissue sample as following:
Sample size (diameter)||1-2 mm||3-4 mm||5-8 mm
1x Extraction Buffer||50 μl||100 μl||200 μl
Mix briefly by tapping or vortexing and make sure that the sample is soaked with Extraction BufferIncubate at room temperature (20-25 °C) for 3 minCentrifuge briefly and transfer 1-2 μl of the supernatant into a 20 μl RT-qPCR assay or 2-5 μl into a 50 μl RT-qPCR assay (see table for Preparation of the RT-qPCR Assay below).
2. Preparation of the RT-qPCR Assay
Preparation of a master mix is crucial in quantitative PCR reactions to reduce pipetting errors. Prepare a master mix of all components except template as specified below. A reaction volume of 20-50 μl is recommended for most real-time instruments. Pipet with sterile filter tips and minimize the exposure of the labeled DNA probe to light. Perform the setup in an area separate from DNA preparation or analysis. No-template controls should be included in all amplifications.
component||stock conc.||final conc.||20 μlassay||50 μlassay
SCRIPT Direct RT-qPCR ProbesMaster highROX||2x||1x||10 μl||25 μl
Extracted Sample||-||-||1-2 μl||2-5 μl
Forward Primer 11)||10 μM||300 nM||0.6 μl||1.5 μl
Reverse Primer 11)||10 μM||300 nM||0.6 μl||1.5 μl
TaqMan® / Dual Labeled Probe 11)||10 μM||200 nM||0.4 μl||1 μl
Forward Primer 22)||10 μM||300 nM||0.6 μl||1.5 μl
Reverse Primer 22)||10 μM||300 nM||0.6 μl||1.5 μl
TaqMan® / Dual Labeled Probe 22)||10 μM||200 nM||0.4 μl||1 μl
PCR-grade water||-||-||fill up to20 μl||fill up to50 μl
1) The optimal concentration for primers and probe may vary from 100 to 500 nM and should be optimized for each new assay set-up
2) Required only for multiplex PCR applications

Mix the tubes briefly and spin down to remove bubbles.3. RT-PCR Cycling
Switch on the real-time PCR cycler and set all cycling parameters as recommended in the table below. Place the vials into the instrument and start the program.
Reversetranscription3)||50-55 °C||10-15 min||1x
Initialdenaturation||95 °C||5 min||1x
DenaturationAnnealing and elongation||95 °C60-65 °C 4)||15 sec30-60 sec5)||35-45x
3) A reverse transcription time of 10 min is recommended for optimal amplicon lengths between 100 and 200 bp. Longer amplicons up to 500 bp may require a prolonged incubation of 15 min. Add 3 min for each additional 100 bp. The optimal temperature depends on the structural features of the RNA. Increase the temperature to 55°C for difficult templates with high secondary structure. Note that optimal reaction time and temperature should be adjusted for each particular RNA.
4) The annealing temperature depends on the melting temperature of the primers.
5) The elongation time depends on the length of the amplicon. A time of 30 sec is sufficient for fragments < 500 bp.

To obtain optimal specificity and amplification results an individual optimization of the recommended parameters is recommended for each particular sample/primer pair.

4. Data AnalysisCalculate ct-values and evaluate the data according to the instruction of the cycler and requirements of the experiment/application.