Performance:
The RT-qPCR kit ensures fast and easy
preparation with a minimum of pipetting steps and is highly recommended for:
• direct detection of RNA viral pathogens in various
tissues
• direct amplification of target RNA from sample
materials
• point-of-care Diagnostics
• Simultanly detection of multiple targets (multiplex PCR)
Description:
The kit is recommended for use with Dual Labelled Fluorescent Probes, e.g. TaqMan®, Molecular Beacons or FRET probes but can also be used without fluorescent probes
in standard PCR assays. The kit contains an enzyme mixture including a genetically engineered reverse transcriptase and an antibody-inhibited Taq polymerase. The 2x conc. reaction mix
contains ultrapure dNTPs and an unique buffer system optimized to resist various PCR inhibitors in impurified sample material.
One.Direct.Step RT-qPCR for Probes is designed for
quantitative real-time analysis of target RNA directly from whole blood, swabs and animal- or plant tissue without the requirement of any prior RNA purification steps! Easy
protocol.
shipping and storage: transportation with blue ice; storage @ -20°C; for at least 16 months (stable @ +4°C up to 4 weeks), avoid frequently
freeze/thaw cycles
Manufactured and quality-controlled in accordance with ISO 9001:2000
Tags:
ProbeMastermix, Direct RT-PCR, SCRIPT PCR Mastermix, Real-time PCR Mastermix for direct reverse transcription from wole blood, nasal swaps
- Direct RT-PCR: Amplification directly from blood or from Nasal or Throat swabs
- The RT-realtime PCR Kit is based on a genetically engineered reverse transcriptase;
- for improved efficiency, thermostability and specivicity; structured and long cDNA fragments;
Final price excl. shipping costs3
Kit content:
Extraction Buffer: 1x concentrated
Direct Enzyme: Mix of engineered reverse transcriptase, mAB-inhibited hot start polymerase, dNTPs,
reaction buffers, enhancers and additives
PCR-grade Water
Optional: ROX Dye
Easy Preparation (e.g. 50 µl reaction volume)
1. Whole Blood (not treated heparin-, EDTA- or
citrate-treated whole blood)
• Add 2-5 µl whole blood (for 50 µl reaction volume)
without any pre-treatment directly to the RT-PCR assay.
2. Swab Samples from nasal or swaps
• fill 200 µl Extraction Buffer in a 1,5 ml Tube
• Cut the tip with nasal or throat swap and put to micro
tube and vortex about 15-20 sec
• let absorb and incubate at room temperature for about
3 min
• press the tip of the swap to the wall of the microtube
and take it out
• centrifuge the tube extensively and transfer, for a 50µl
reaction volume, 2-5 µl of the supernatant to your RT-
PCR assay.
3. Animal or Plant Tissue
samples
• Prepare a small piece from animal or plant tissue not
exceeding 8 mm in diameter.
• Crack plant seeds to less than 1 mm in diameter using
a cell-disrupter, Tissue-lyser or small hammer.
• Add 1x Extraction Buffer to the tissue sample using:
Sample size
1-2 mm - 50 µl
3-4 mm - 100 µl
5-8 mm - 200 µl
• mix Extraction Buffer and sample briefly and
incubate for about 3 min at room temperature
• Centrifuge extensively and and transfer 2-5 µl (for
50 µl reaction volume) of the supernatant to your
RT-qPCR assay
Preparation of the RT-PCR Assay
Add the following components to a nuclease-free microtube. Pipette on ice and mix the components by pipetting gently up and down.
Component | stock conc. | final conc. | 20 µl assay | 50 µl assay |
RT-qPCR enzyme mix | 2x | 1x | 10 µl | 25 µl |
Sample, whole blood or extracted |
- | - | 1-2 µl |
2-5 µl
|
Forward primer Xn 1.) |
10 µM | 300 nM | 0,6 µl | 1,5 µl |
Reverse Primer Xn 1.) |
10 µM | 300 nM | 0,6 µl | 1,5 µl |
Dual labelled probe / TaqMan Xn 1.)
|
10 µl | 200 nM | 0,4 µl | 1 µl |
optional ROX | 25 µM | 500nM | 0,4 µl |
1 µl |
PCR- grade water |
- |
- | up to 20 µl |
up to 50 µl |
1.) for each PCR-Target (Multiplex PCR) take Xn+1 primers and the related amount of TaqMan probe
Note: For each primer on have to optimize the best assay parameters. The optimal primer can vary from 100 - 500 nM.
Reverse transcription and thermal cycling:
Place the vials into a real-time PCR cycler and start the following program.
reverse transcription | 50-55 °C | 10-15 min | 1x |
initial denaturation | 95 °C | 5 min | 1x |
denaturation | 95 °C | 15 sec | 35-45x |
annealing and elongation | 60-65 °C 2) | 1 min 3) | 35-45x |
Protocol for standard PCR cycler combined with gel - based DNA analysis the following cycling protocol is recommended:
reverse transcription 2.) |
50 °C | up to 30 min | 1x |
initial denaturation |
95 °C | 3-5 min |
1x |
denaturation |
95 °C | 15 sec | 35-45x |
annealing 3.) 4.) | 55-65 °C ) | 1 min 3) | 35-45x |
elongation | 67 °C | 1 min/kb | 35-45x |
final elongation | 67 °C | 5 min | 1x |
2.) 10 min for amplicons < 200 bp; each 100 bp fragment length need about 3 min longer incubation time
3.)The annealing temperature depends on the melting temperature of the primers.
4.) The elongation time depends on the length of the amplicon. A time of 1 min for a fragment of 1,000 bp is recommended.
Note:
For optimal specificity and amplification an individual optimization of the recommended parameters may be necessary. Note that optimal reaction times and temperatures should be adjusted for each
particular sample/primer pair.