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Filtration Isolation of Nucleic Acids: A Simple and Rapid DNA Extraction Method
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A rapid high-resolution method for resolving DNA topoisomers.

Lesley A Mitchenall1, Rachel E Hipkin2,3, Michael M Piperakis1,4

  • 1Department of Biological Chemistry, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, UK.

BMC Research Notes
|January 18, 2018
PubMed
Summary
This summary is machine-generated.

The QIAxcel Advanced System offers superior resolution and speed for separating DNA topoisomers compared to traditional gel electrophoresis. This high-throughput capillary electrophoresis method is cost-effective and ideal for analyzing DNA topoisomer distributions.

Keywords:
Capillary electrophoresisDNA topoisomerasesMinicirclesPlasmids

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Area of Science:

  • Molecular Biology
  • Biotechnology
  • Genetics

Background:

  • Agarose gel electrophoresis is a standard method for DNA analysis, including separating plasmid DNA topoisomers.
  • However, gel electrophoresis has limitations in throughput and efficiency for analyzing DNA topoisomerases.

Purpose of the Study:

  • To evaluate the QIAxcel Advanced System, a capillary electrophoresis platform, for DNA topoisomer separation.
  • To compare its performance against traditional agarose gel electrophoresis.

Main Methods:

  • Preparation of various DNA topoisomers, including plasmids pBR322, pUC19, and a DNA minicircle.
  • Separation and analysis of these topoisomers using both agarose gel electrophoresis and the QIAxcel Advanced System.

Main Results:

  • The QIAxcel Advanced System demonstrated superior resolution in separating DNA topoisomers.
  • Quantitative analysis of topoisomer distributions was straightforward and efficient.
  • The QIAxcel system showed advantages in speed, resolution, and cost-effectiveness.

Conclusions:

  • The QIAxcel Advanced System is a high-throughput, efficient alternative to gel electrophoresis for DNA topoisomer analysis.
  • This technique is applicable to various DNA circle sizes and can be adapted for drug screening against topoisomerase targets.