Recovery of DNA from bone without demineralization

Iyavoo, Sasitaran and Goodwin, William H orcid iconORCID: 0000-0002-3632-3552 (2022) Recovery of DNA from bone without demineralization. Forensic Science International: Genetics Supplement Series .

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This study assessed the performance of five different DNA extraction methods for the recovery of DNA from bone: ChargeSwitch® gDNA Plant Kit, DNA IQTM System Kit, DNeasy® Blood & Tissue Kit, PrepFiler® BTA Forensic DNA Extraction Kit and phenol-chloroform-isoamyl alcohol. DNA was extracted from pig rib and femur bones that was fresh, had undergone surface decomposition for three months, and had undergone surface decomposition for one year. Extracted DNA was analyzed using real-time PCR and amplification of an in-house PCR multiplex that assessed the quality and quantity of DNA and for the presence of inhibitors.
The phenol-chloroform-based method consistently yielded the highest amounts of DNA and DNA IQ the lowest; however, all methods produced relatively high yields of DNA from both pig rib and femur samples that could be amplified without any detected inhibition.
The data demonstrate that with reasonable quality bone samples any of the tested methods can isolate DNA that can be successfully analyzed. The effective use of internal PCR controls is also demonstrated.

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