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Pilot validation of on-field STR typing and human identity testing by MinION nanopore sequencing
Yuan Luo1, Jiarong Zhang2,3, Ming Ni4
1Laboratory of Clinical Medicine, Air Force Medical Center, Air Force Medical University, PLA, Beijing, P. R. China.
Electrophoresis
|February 15, 2024
Summary
Portable nanopore sequencing can now identify individuals in the field. This technology, using Oxford Nanopore Technologies, enables rapid DNA analysis for forensic medicine applications at accident sites.
Area of Science:
- Forensic Science
- Genomics
- Biotechnology
Background:
- Nanopore sequencing offers advantages like portability and real-time analysis for forensic applications.
- Current methods for field-based individual identification face limitations in speed and accessibility.
Purpose of the Study:
- To demonstrate the feasibility of using nanopore sequencing for on-site individual identification.
- To assess the performance of a portable nanopore sequencing system for forensic DNA analysis.
Main Methods:
- A portable detection box integrated a nanopore MinION MK1B device for field use.
- Short tandem repeat (STR) loci were analyzed for individual identification.
- Double-blinded experiments were conducted to validate genotyping accuracy.
Main Results:
- Individual identification of 12 samples was achieved within 24 hours by analyzing 23 STR loci.
- Genotyping success rate was 95.3% for 1150 genotypes, with an accuracy rate of 86.87%.
- The accuracy of STR genotyping was verified against a gold standard method.
Conclusions:
- Nanopore sequencing platforms are feasible for field-based individual identification in forensic medicine.
- Further advancements in bioinformatics and sequencing technology will enhance real-time identification capabilities.
- The developed portable system shows promise for rapid DNA analysis at accident scenes.
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