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Related Experiment Video

Updated: Apr 27, 2026

Methyl-binding DNA capture Sequencing for Patient Tissues
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Published on: October 31, 2016

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Next-generation sequencing approach to epigenetic-based tissue source attribution.

Craig M Bartling1, Mark E Hester, Julianne Bartz

  • 1Battelle Memorial Institute, Columbus, OH, USA.

Electrophoresis
|July 2, 2014
PubMed
Summary
This summary is machine-generated.

This study presents a new next-generation sequencing (NGS) method for DNA methylation analysis to identify the tissue source of forensic evidence. The method accurately attributed tissue types from samples like blood and saliva.

Keywords:
DNAEpigeneticMethylationSequencingTissue

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Area of Science:

  • Forensic Science
  • Molecular Biology
  • Genetics

Background:

  • Determining the tissue origin of biological samples is crucial for forensic investigations.
  • Existing methods for tissue source attribution have limitations.
  • DNA methylation patterns offer a promising avenue for tissue-specific identification.

Purpose of the Study:

  • To adapt a capillary electrophoresis (CE)-based DNA methylation analysis for next-generation sequencing (NGS).
  • To develop a robust NGS method for accurate tissue source attribution of forensic samples.
  • To assess the compatibility of this methylation-based method with existing Short Tandem Repeat (STR) analysis workflows.

Main Methods:

  • DNA samples (1 ng) from four tissue types (semen, saliva, skin epidermis, blood) were analyzed.
  • Methylation-sensitive restriction endonuclease Hha1 digestion was performed, followed by PCR amplification of ten methylated loci.
  • Products were prepared as NGS libraries, multiplexed with barcodes, sequenced on an Illumina MiSeq, and analyzed using a k-Nearest Neighbor algorithm.

Main Results:

  • The developed NGS method achieved a high concordance rate of 15 out of 16 for tissue source attribution.
  • The method demonstrated accuracy across diverse sample types, including semen, saliva, skin epidermis, and blood.
  • The protocol was designed for compatibility with established NGS workflows for STR analysis in forensic laboratories.

Conclusions:

  • The NGS-based DNA methylation profiling method is highly accurate for forensic tissue source attribution.
  • This approach holds potential as a confirmatory test when used alongside other NGS forensic protocols.
  • Further validation and testing are recommended for practical implementation in forensic laboratories.