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Related Concept Videos

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DNA isolation protocols can be fast and straightforward or complex and time-consuming depending on the type and quality of DNA required for further processing. For example, plasmid DNA extraction is a bit more complicated than genomic DNA extraction because of the need for an appropriate lysis method to separate plasmid DNA from gDNA during isolation. However, for specific applications, such as long-range DNA sequencing that require a good yield of high- quality DNA samples, we need to follow...
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Related Experiment Video

Updated: Sep 26, 2025

Optimized Bone Sampling Protocols for the Retrieval of Ancient DNA from Archaeological Remains
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Development and Optimization of a Silica Column-Based Extraction Protocol for Ancient DNA.

Marianne Dehasque1,2,3, Patrícia Pečnerová4, Vendela Kempe Lagerholm1,5

  • 1Centre for Palaeogenetics, Svante Arrhenius väg 20C, 10691 Stockholm, Sweden.

Genes
|April 23, 2022
PubMed
Summary

Optimizing ancient DNA extraction is crucial for palaeogenomics. This study found MinElute columns and lower uracil treatment concentrations improve DNA recovery and reduce damage in ancient specimens.

Keywords:
DNA extractionancient DNAbonehigh-throughput sequencingwoolly mammoth

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Area of Science:

  • Palaeogenomics
  • Molecular Biology
  • Biochemistry

Background:

  • Retrieving endogenous DNA from ancient specimens is vital for palaeogenomic research.
  • Current ancient DNA (aDNA) extraction methods often lack systematic optimization, relying on anecdotal evidence.

Purpose of the Study:

  • To systematically test and optimize a silica column-based extraction protocol for improved endogenous DNA yield from ancient specimens.
  • To evaluate the effectiveness of different pretreatment steps, DNA recovery columns, and uracil treatment concentrations.

Main Methods:

  • Systematic testing of pretreatment methods (bleach wash, predigestion) on permafrost bone and tooth powder.
  • Comparative analysis of MinElute, QIAquick, and Vivaspin columns for aDNA recovery efficiency.
  • Evaluation of uracil-specific excision reagent (USER) enzyme concentrations for DNA damage removal.

Main Results:

  • Neither bleach wash nor predigestion significantly enhanced DNA sequencing efficiency.
  • MinElute columns demonstrated higher efficiency for aDNA extraction compared to QIAquick columns.
  • Vivaspin columns with different molecular weight cut-offs showed no significant difference in recovery.
  • Uracil treatment effectively reduced DNA damage at 0.15 U/µL, a lower concentration than typically used.

Conclusions:

  • The optimized protocol, particularly the use of MinElute columns and reduced uracil treatment, enhances endogenous DNA retrieval from ancient samples.
  • Systematic experimental validation is superior to anecdotal modifications for improving aDNA extraction protocols.
  • This research provides a more efficient and reliable method for advancing palaeogenomic studies.