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Bio-Inspired Magnetic Beads for Isolation of Sperm from Heterogenous Samples in Forensic Applications

NCJ Number
Forensic Science International-Genetics Volume: 52 Dated: 2021 Pages: 102451
F. Inci; et al
Date Published

This article presents a new technique that leverages the integration of a bio-inspired oligosaccharide (i.e., SialylLewisX) with magnetic beads that provides a rapid, inexpensive, and easy-to-use strategy that can potentially be adapted with current differential extraction practice in forensics labs.


Rapid and efficient processing of sexual assault evidence will accelerate forensic investigation and decrease casework backlogs. The standardized protocols currently used in forensic laboratories require the continued innovation to handle the increasing number and complexity of samples being submitted to forensic labs. The proposed platform (i) selectively captures sperm; (ii) is sensitive within the forensic cut-off; (iii) provides a cost effective solution that can be automated with existing laboratory platforms; and (iv) handles small volumes of sample (∼200 μL). This strategy can rapidly isolate sperm within 25 minutes of total processing that will prepare the extracted sample for downstream forensic analysis and ultimately help accelerate forensic investigation and reduce casework backlogs. (Publisher Abstract)