The First Effective Whole Genome Amplification

In: Bioscience, Diagnostics, DNA

Unlimited DNA from a few cells.

The
growing trend to study disease and drug response at the molecular level
has focused attention on DNA as a precious resource. Multiple Displacement
Amplification (MDA) technology developed by MSI enables the first effective
whole genome amplification method. The MDA method is a quantum leap over
other currently available whole genome amplification methods, which are
based on PCR
The MSI MDA method rapidly amplifies the genome with comprehensive loci
coverage and minimal bias between any loci, yielding 10+kb fragments in
a simple, scalable reaction.

The MSI MDA technology platform for whole genome amplification can transform
the current practice of sample preparation and sample archiving for genetic
testing.

  • Comprehensive coverage and 10+kb fragments expand applications
  • Increased accuracy provides amplified material true to the original
  • Simplified method eliminates sample preparation step
  • Provides assay-ready DNA

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    The MDA technology platform for whole genome
    amplification enables:

    • A virtually unlimited number of tests per sample
    • Use of smaller samples, such as buccal swabs, mouthwash, and finger prick
    • Use of DNA from alternative sources, such as biopsies and needle aspirates
    • An increase in the practice of archiving DNA for additional testing or re-testing
    • Amplification directly from whole blood and cells

    Optimal coverage and minimal bias

    Comprehensive coverage of all gene sequences and unprecedented low bias expand range of downstream applications.

    Accuracy

    Use of enzyme with very high proofreading capability yields amplified DNA true to original sequence, enabling high-performance assays such as SNP, genotyping.

    Scalability

    Larger quantities of DNA generated by increasing reaction volume, enables large-scale studies such as high-density genotyping.

    Sample prep steps eliminated

    MDA method is carried out directly on crude lysed cells, whole blood, buccal swabs, and other biological samples, eliminating costly, time-consuming DNA purification steps.

    Assay-ready

    Contaminants effectively diluted out, replacing need for DNA purification and allowing downstream applications to be performed with no inhibitory effects.

    High throughput

    Ideally suited for 96-well-plate automated systems with no centrifugation and/or filtrations needed.

    Long fragments

    DNA generated in excess of 10kb in length, enabling molecular biology methods such as RFLP.

    VITAL
    CHARACTERISTICS:

    Sample
    Targets
    • Genomic DNA, whole blood, buffy coats,
      buccal swabs, mouthwash, and cultured cells

    Amount
    • 1µl blood, single cheek swab, sub-ng gDNA

    Lysis
    Procedures
    • 10-minute one-step lysis

    Yield
    • 50µg DNA from a few genomic copies
      in a 100µl reaction

    • Scalable to 10mg DNA yield from
      large-scale reaction

    • Consistent yield independent of amount
      of starting sample

    Reaction
    Time
    • 6 hours or overnight
    Coverage
    • All loci represented at approximately same level
      as in starting genomic DNA target, no more than

      6-fold difference

    • Only highly repetitive sequences lost, such as
      centromere and telomere repeats
    Assay-ready
    DNA
    • PCR-based assays, such as SBE, TaqMan,
      restriction enzyme digestion, and STRs

    • Southern analysis, including RFLP

    • DNA sequencing

    TaqMan is a registered trademark of Roche Molecular
    Systems


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