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Related Experiment Video

Updated: May 3, 2026

Primer Extension Capture: Targeted Sequence Retrieval from Heavily Degraded DNA Sources
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Random-primed, Phi29 DNA polymerase-based whole genome amplification.

John R Nelson1

  • 1GE Global Research, Niskayuna, New York.

Current Protocols in Molecular Biology
|February 11, 2014
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Summary

Whole-genome amplification using multiple displacement amplification (MDA) creates vast amounts of DNA from small samples. This isothermal reaction with Phi29 DNA polymerase and random primers offers high yields and extensive genomic coverage.

Keywords:
Phi29 DNA polymeraseisothermal amplificationmultiple displacement amplification (MDA)whole-genome amplification (WGA)

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Area of Science:

  • Molecular Biology
  • Genomics
  • Biotechnology

Background:

  • Trace DNA samples pose challenges in genomic research.
  • Limited DNA availability can hinder downstream analyses.
  • Whole-genome amplification is crucial for amplifying minute DNA quantities.

Purpose of the Study:

  • To explain the principles of multiple displacement amplification (MDA).
  • To describe the application of MDA for whole-genome amplification.
  • To review the use of commercial MDA kits.

Main Methods:

  • Utilizes Phi29 DNA polymerase.
  • Employs random hexamer primers.
  • Performs isothermal amplification of linear DNA molecules.

Main Results:

  • Generates potentially unlimited genomic material.
  • Achieves extensive amplification coverage of the genome.
  • Produces extremely long DNA fragments with high yields.

Conclusions:

  • MDA is a powerful technique for amplifying trace DNA samples.
  • The method provides unbiased amplification and high-quality DNA products.
  • Commercial kits facilitate the practical application of MDA in research.