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STR-typing of ancient skeletal remains: which multiplex-PCR kit is the best?
Melanie Harder1, Rebecca Renneberg, Patrick Meyer
1Institute of Legal Medicine, University Hospital Schleswig-Holstein, Campus Kiel, Arnold-Heller-Strasse 12, Kiel, Germany.
Aim:
To comparatively test nine co mmercially available short tandem repeat (STR)-multiplex kits (PowerPlex 16, 16HS, ES, ESI17, ESX17, S5 [all Promega]; AmpFiSTR Identifiler, NGM and SEfiler [all Applied Biosystems]) for their efficiency and applicability to analyze ancient and thus highly degraded DNA samples.
Methods:
Fifteen human skeletal remains from the late medieval age were obtained and analyzed using the nine polymerase chain reaction assays with slightly modified protocols. Data were systematically compared to find the most meaningful and sensitive assay.
Results:
The ESI, ESX, and NGM kits showed the best overall results regarding amplification success, detection rate, identification of heterozygous alleles, sex determination, and reproducibility of the obtained data.
Conclusion:
Since application of these three kits enables the employment of different primer sequences for all the investigated amplicons, a combined application is recommended for best possible and--most importantly--reliable genetic analysis of ancient skeletal material or otherwise highly degraded samples, e.g., from forensic cases.
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