Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6553748 | Forensic Science International: Genetics | 2015 | 9 Pages |
Abstract
We tested this approach on two-person and four-person whole blood mixtures where one contributor possessed an HLA allele (A*02) that was not shared by other contributors to the mixture. Results showed that hybridization of the mixture with a fluorescently-labeled antibody probe complimentary to the A*02 allele's protein product created a cell population with a distinct optical profile that could be easily differentiated from other cells in the mixture. After sorting the cells with FACS, genetic analysis showed that the STR profile of this cell population was consistent with that of the contributor who possessed the A*02 allele. Minor peaks from the A*02 negative contributor(s) were observed but could be easily distinguished from the profile generated from A*02 positive cells. Overall, this indicates that HLA antibody probes coupled to FACS may be an effective approach for generating STR profiles of individual contributors from forensic mixtures.
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Authors
Lee Dean, Ye Jin Kwon, M. Katherine Philpott, Cristina E. Stanciu, Sarah J. Seashols-Williams, Tracey Dawson Cruz, Jamie Sturgill, Christopher J. Ehrhardt,