Abstract
AimTo obtain individual Y-short tandem repeat (STR) profiles in a multi-suspect sexual assault case.MethodsWe used laser cut microdissection to capture the single sperm cell in the multi-contributor semen sample, combined with the low volume polymerase chain reaction (LV-PCR) method to genotype the single sperm cell profiles using the Yfiler® kit. Consensus DNA profiles were generated from 5 replicate experiments.ResultsNinety-four parallel LV-PCRs were performed and 41 reactions (44%) produced Y-STR profiles with more than nine loci. Three individual Y-STR profiles were successfully obtained.ConclusionThe three Y haplotype units matched three known perpetrators’ genotypes. Our results showed that single sperm cells Y-STR analysis was a powerful method for analyzing multi-donor semen mixture sample.
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