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Automation-Robotics Product Profiles

Wizard® MagneSil™ PCR Clean-Up System

The Wizard® MagneSil™ PCR Clean-Up System is designed to remove impurities from PCR reactions, resulting in high quality and yield of double-stranded PCR products. This novel system removes primers and non-targeted amplification products, such as primer-dimers and excess nucleotides, from PCR reactions. The system is designed to be automated on laboratory robotic systems for unattended purification.

Figure 1

Automated purification of PCR samples on a Beckman Coulter Biomek® FX with the Wizard® MagneSil™ PCR Clean-Up System.

PCR clean-up is performed using Promega’s unique MagneSil™ Paramagnetic Particles and the MagnaBot® Magnetic Separation Device (Cat.# V8151). This innovative device is designed for use on robotic platforms.

The MagneSil™ PCR Clean-Up procedure is fast and reliable. PCR products bind to MagneSil™ Particles in the presence of guanidine hydrochloride and remain tightly bound during washing. Purified DNA is eluted in water and may be used for automated fluorescent sequencing and microarray spotting.

FEATURES

Utilizes MagneSil™ Magnetic Particle Technology
DNA capture is performed using MagneSil™ paramagnetic particles.  No centrifugation or vacuum required.

Full Automation
The system offers the distinct advantage of complete walk-away automation. Process multiple plates without user intervention.

Figure 2

Automated purification of PCR products using the MagneSil™ PCR Clean-Up System on the Beckman Coulter Biomek® FX.


Qualified for Fluorescent Sequencing and Microarray Analysis
The MagneSil™ PCR Clean-Up System purifies PCR products for use in a number of molecular biology applications including fluorescent sequencing and microarray analysis.

Figure 3

The Wizard® MagneSil™ PCR Clean-Up System reproducibly purifies a 1,000bp PCR product for fluorescent sequencing. The purified PCR product was sequenced using an ABI PRISM® BigDye™ Terminator Cycle Sequencing Kit. The sequencing reactions were then cleaned up using the Wizard® MagneSil™ Sequencing Reaction Clean-Up System (Cat.# A1830). The purified PCR product was sequenced using an ABI PRISM® BigDye™ Terminator Cycle Sequencing Kit. The sequencing reactions were then cleaned up using the Wizard® MagneSil™ Sequencing Reaction Clean-Up System (Cat.# A1830).

Figure 4

Successful microarray production from PCR probes purified with the Wizard® MagneSil™ PCR Clean-Up System.300bp Kanamycin RT-PCR products were purified using Wizard® MagneSil™ PCR Clean-Up System, serially diluted and spotted in replicate for production of control microarrays. Image represents sample quadrants of Cy®3 (green) and Cy®5 (red) target hybridizations. The system provides consistently high yields, spot morphology, and hybridization efficiency.

Consistent Performance
Remove lower molecular weight DNA, including primers and primer-dimers, up to 100bp. Primer removal is consistently greater than 98%.

Figure 6
Recovery of PCR products by size. PCR samples (100µl) using either PCR Master Mix (Cat.# M7505) or AmpliTaq® DNA Polymerase (Perkin Elmer) were purified using the Wizard® MagneSil™ PCR Clean-Up System manually. The yield of each PCR product was determined by agarose gel electrophoresis on a 1% agarose gel stained with ethidium bromide. The gel was imaged and bands were quantitated using a Molecular Dynamics FluorImager®. These samples consisted of a single size product with no primer-dimers or primers visible on the gel. The purified PCR products were normalized to an equivalent amount of starting material. The mean and standard deviation of 12 individual determinations for each product size is shown.

Reproducible Results
The Wizard® MagneSil™ PCR Clean-Up System has been used to purify PCR products from 150bp up to 23kb in size. Demanding molecular biology applications, such as fluorescent sequencing and microarray analysis, require robust results from a wide size range of PCR products. Greater than 80% recovery can be obtained with fragments larger than 500bp.

Figure 7
The Wizard® MagneSil™ PCR Clean-Up System removes primer-dimers from PCR products with high yield and consistent results.  A titration of unpurified prothrombin PCR product is shown before purification (100%, 50%, 25%, 12.5% and 6.25% of the PCR sample). The ~100bp primer-dimers are visible in these lanes. Eight replicates purified using the Wizard® MagneSil™ PCR Clean-Up System show the 506bp prothrombin PCR product with no visible primer-dimers. The ethidium bromide-stained 1% agarose gel was imaged using an Alpha Innotech FluorChem™ fluorescence imaging system.  Lane M, 100bp DNA Ladder (Cat.# G2101).