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Whole Human Mitochondrial DNA Sequencing.

Igor V Ovchinnikov1, Mathew J Malek2, Katelyn Kjelland2

  • 1Department of Biology, University of North Dakota, Starcher Hall, 10 Cornell Street Stop 9010, Grand Forks, ND, 58202, USA. igor.ovtchinnikov@email.und.edu.

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|June 5, 2016
PubMed
Summary
This summary is machine-generated.

This study presents a new two-round PCR method for whole mitochondrial genome sequencing from degraded forensic samples. The technique successfully analyzed ancient saliva DNA, offering improved identification capabilities for crime scene investigations.

Keywords:
DNA sequencingMultiplex PCRSimplex PCRWhole mtDNA

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Area of Science:

  • Forensic Science
  • Molecular Biology
  • Genetics

Background:

  • Mitochondrial DNA (mtDNA) analysis is crucial for identifying biological evidence from crime scenes and human remains.
  • Sequencing hypervariable regions of mtDNA is common, but whole genome sequencing provides more discriminating profiles.
  • Existing methods for amplifying and sequencing whole mtDNA from forensic samples vary.

Purpose of the Study:

  • To describe a novel two-round PCR method for whole mitochondrial genome sequencing.
  • To evaluate the method's efficacy on aged and potentially degraded forensic specimens.
  • To offer a more robust approach for forensic identification using mtDNA.

Main Methods:

  • A two-round Polymerase Chain Reaction (PCR) approach was developed, combining multiplex and simplex PCR.
  • The method was applied to analyze mitochondrial genomes from archival saliva samples stored on FTA® cards for 10 years.
  • No special protection was required for sample preservation and transportation.

Main Results:

  • The described two-round PCR method successfully generated whole mitochondrial genome profiles from old saliva samples.
  • The analysis was performed on samples preserved for a decade without special protective measures.
  • The technique demonstrated the potential for analyzing degraded biological specimens.

Conclusions:

  • The developed two-round PCR method is effective for whole mitochondrial genome sequencing from aged forensic samples.
  • This technique offers a valuable tool for forensic identification, especially when dealing with degraded DNA.
  • The method may be adaptable for analyzing other types of old biological specimens with modifications for DNA degradation levels.