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Products
Store at 4°C upon arrival for up to 6 months.
PCR technology has become one of the most potent molecular biological tools in the last few decades. However, biological samples collected from different materials often contain various PCR inhibitors that can interfere with PCR amplification. PCR inhibitors are a diverse group of compounds that inhibit the amplification of DNA through the polymerase chain reaction (PCR). PCR inhibitors generally exert their effects by directly binding the active site of a DNA polymerase to cause decreased sensitivity or complete failures of the DNA amplification. Therefore, removing PCR inhibitors from the DNA extracts before the PCR amplification is vital for all downstream applications.
The protocol is straightforward and fast: one tube, one step, and one minute (Fig.1). Add the magnetic beads directly to the pre-purified DNA samples and vortex or pipette to capture and remove the impurities. After vortexing/pipetting, the beads are magnetically removed, while the supernatant contains the purified and ready-to-run products. Unlike standard bind-wash-elute protocol, this convenient procedure does not contain traces of organic solvents, chaotropic salts, or EDTA and is almost 100% DNA recovery. The beads enable 96 samples to be processed simultaneously in less than 10 minutes with cost-effective lab vortex mixers.
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Simple Protocol: No liquid transfer, One-tube, One-step
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Ultrafast: One-minute manual protocol or less than 10-minutes vortex (96 samples)
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Higher purity and recovery > 90% DNA (> 50bp)
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Cost-effective: Eliminates columns, filters, laborious repeat pipetting, and ethanol
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High throughput: Compatible with many different automated liquid handling systems
Handling and Storage:
The following protocol is an example. The beads and sample volume can be rational Scale-up (or down) as needed. Do not use buffers containing organic solvents.
Equipment
Item
Magnetic Rack for centrifuge tube
** Based on sample volume, the user can choose one of the following magnetic Racks
Source
• BcMag™ Rack-2 for holding two individual 1.5 ml centrifuge tubes (Bioclone, Cat. No. MS-01)
• BcMag™ Rack-6 for holding six individual 1.5 ml centrifuge tubes (Bioclone, Cat. No. MS-02)
• BcMag™ Rack-24 for holding twenty-four individual 1.5-2.0 ml centrifuge tubes (Bioclone, Cat. No. MS-03)
• BcMag™ Rack-50 for holding one 50 ml centrifuge tube, one 15 ml centrifuge tube, and four individual 1.5 ml centrifuge tubes (Bioclone, Cat. No. MS-04)
Item
BcMag™ 96-well Plate Magnetic Rack.
Source
• BcMa™ 96-well Plate Magnetic Rack (side-pull) compatible with 96-well PCR plate and 96-well microplate or other compatible Racks (Bioclone, Cat. No. MS-06)
Item
Adjustable Single and Multichannel pipettes
Item
Centrifuge with swinging bucket
Addition items are required if using 96-well PCR plates / tubes
Vortex Mixer
** The user can also use other compatible vortex mixers. However, the Time and speed should be optimized, and the mixer should be: Orbit ≥1.5 mm-4 mm, Speed ≥ 2000 rpm
Eppendorf™ MixMate™
Eppendorf, Cat. No. 5353000529
Tube Holder PCR 96
Eppendorf, Cat. No. 022674005
Tube Holder 1.5/2.0 mL, for 24 × 1.5 mL or 2.0 mL
Eppendorf, Cat. No. 022674048
Smart Mixer, Multi Shaker
BenchTop Lab Systems, Cat. No. 5353000529
1.5/2.0 mL centrifuge tube
96-well PCR Plates or 8-Strip PCR Tubes
Addition Items Are Required If Using 96-Well Microplates
Fisher Scientific™ Microplate Advanced Vortex Mixers
Fisher, Cat. No. 02-216-101
OHAUS Microplate Vortex Mixers
OHAUS, Cat. No. 30392160
Vortex Mixer
** The user can also use other compatible vortex mixers. However, the time and speed should be optimized, and the mixer should be Orbit ≥1.5 mm-4 mm, Speed≥ 800 rpm
Clear Flat-Bottom Non-Binding Assay Microplates
Items
Magnetic Rack for centrifuge tube
** Based on sample volume, the user can choose one of the following magnetic Racks
Source
●
BcMag™ Rack-2 for holding two individual 1.5 ml centrifuge tubes (Bioclone, Cat. No. MS-01)
●
BcMag™ Rack-6 for holding six individual 1.5 ml centrifuge tubes (Bioclone, Cat. No. MS-02)
●
BcMag™ Rack-24 for holding twenty-four individual 1.5-2.0 ml centrifuge tubes (Bioclone, Cat. No. MS-03)
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BcMag™ Rack-50 for holding one 50 ml centrifuge tube, one 15 ml centrifuge tube, and four individual 1.5 ml centrifuge tubes (Bioclone, Cat. No. MS-04)
BcMag™ 96-well Plate Magnetic Rack
●
BcMa™ 96-well Plate Magnetic Rack (side-pull) compatible with 96-well PCR plate and 96-well microplate or other compatible Racks (Bioclone, Cat. No. MS-06)
Adjustable Single and Multichannel pipettes
Centrifuge with swinging bucket
Addition items are required if using 96-well PCR plates/tubes
Vortex Mixer
** The user can also use other compatible vortex mixers. However, the Time and Speed should be optimized, and the mixer should be: Orbit ≥1.5 mm-4 mm, Speed ≥ 2000 rpm
Eppendorf™ MixMate™
Tube Holder PCR 96
Tube Holder 1.5/2.0 mL, for 24 × 1.5 mL or 2.0 mL
Smart Mixer, Multi Shaker
Eppendorf, Cat. No. 5353000529
Eppendorf, Cat. No. 022674005
Eppendorf, Cat. No. 022674048
BenchTop Lab Systems, Cat. No. 5353000529
Eppendorf™ MixMate™
Tube Holder PCR 96
Tube Holder 1.5/2.0 mL, for 24 × 1.5 mL or 2.0 mL
Eppendorf, Cat. No. 5353000529
Eppendorf, Cat. No. 022674005
BenchTop Lab Systems, Cat. No. 5353000529
1.5/2.0 mL centrifuge tube
96-well PCR Plates or 8-Strip PCR Tubes
PCR plates/tubes
! IMPORTANT ! If using other tubes or PCR plates, make sure that the well diameter at the bottom of the conical section of PCR Tubes or PCR plates must be ≥2.5mm.
Addition items are required if using 96-well microplates
Fisher Scientific™ Microplate Advanced Vortex Mixers
OHAUS Microplate Vortex Mixers
Fisher, Cat. No. 02-216-101
OHAUS, Cat. No. 30392160
Fisher Scientific™ Microplate Advanced Vortex Mixers
Fisher, Cat. No. 02-216-101
OHAUS Microplate Vortex Mixers
OHAUS, Cat. No. 30392160
Vortex Mixer
** The user can also use other compatible vortex mixers. However, the time and speed should be optimized, and the mixer should be Orbit ≥1.5 mm-4 mm, Speed≥ 800 rpm
Clear Flat-bottom Non-Binding Assay Microplates
Procedure
1.
Transfer 100µl premix beads solution (Table 2) to the sample to a new well of 96well PCR plate or 0.2ml PCR tube and add the sample.
2.
Add 10µl magnetic beads to a 100 µl pre-purified DNA sample.
! IMPORTANT ! Users need to optimize the ratio of beads, and the concentration of the PCR inhibitors since the concentration of the inhibitors varies from sample to sample.
3.
Mix the sample with beads for 1 minute by slowly pipetting up and down 20-25 times or by vortex mixer at 2000 rpm for 5 minutes.
4.
Place the sample plate or tube on the magnetic separation plate for 30 seconds or until the solution is clear.
5.
Transfer the supernatant to a clean plate /tube while the sample plate remains on the magnetic separation plate. The sample is ready for downstream applications.
1.
Poddar SK, Sawyer MH, Connor JD. Effect of inhibitors in clinical specimens on Taq and Tth DNA polymerase-based PCR amplification of influenza A virus. J Med Microbiol. 1998 Dec;47(12):1131-5.
2.
Kaltenboeck B, Wang C. Advances in real-time PCR: application to clinical laboratory diagnostics. Adv Clin Chem. 2005;40:219-59.
3.
Alaeddini R. Forensic implications of PCR inhibition – A review. Forensic Sci Int Genet. 2012 May;6(3):297-305.
4.
Al-Soud WA, Rådström P. Purification and characterization of PCR-inhibitory components in blood cells. J Clin Microbiol. 2001 Feb;39(2):485-93.
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