Abstract
Forensic DNA analysis of semen-vaginal fluid mixed stains is essential and necessary in sexual assault cases. Here, we used a magnetic bead conjugated acrosin binding protein (ACRBP) antibody to separate and enrich sperm cells from mixed stains. Previously, western blotting indicated that ACRBP was specifically expressed in sperm cells, but not in female blood and epithelial cells, while immunofluorescence data showed ACRBP was localized to the acrosome in sperm cells. In our study, sperm were separated from mixed samples at three sperm cell/female buccal epithelial cell ratios (103:103; 103:104; and 103:105) using a magnetic bead conjugated ACRBP antibody. Subsequently, 23 autosomal short tandem repeat (STR) loci were amplified using the Huaxia™ Platinum PCR Amplification System and genotyped using capillary electrophoresis. The genotyping success rate for STR loci was 90% when the sperm to female buccal epithelial cell ratio was > 1:100 in mixed samples. Our results suggest that the magnetic bead conjugated ACRBP antibody is effective for isolating sperm cells in sexual assault cases.
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References
Tan Y et al (2018) Two-person DNA mixture interpretation based on a novel set of SNP-STR markers. Forensic Sci Int Genet 37:37–45
Andersen MM et al (2015) Identifying the most likely contributors to a Y-STR mixture using the discrete Laplace method. Forensic Sci Int Genet 15:76–83
Bieber FR et al (2016) Evaluation of forensic DNA mixture evidence: protocol for evaluation, interpretation, and statistical calculations using the combined probability of inclusion. BMC Genet 17(1):125
Riman S, Iyer H, Vallone PM (2021) Examining performance and likelihood ratios for two likelihood ratio systems using the PROVEDIt dataset. PLoS ONE 16(9):e0256714
Coble MD, Bright JA (2019) Probabilistic genotyping software: an overview. Forensic Sci Int Genet 38:219–224
Moretti TR et al (2017) Internal validation of STRmix for the interpretation of single source and mixed DNA profiles. Forensic Sci Int Genet 29:126–144
Timken MD, Klein SB, Buoncristiani MR (2018) Improving the efficacy of the standard DNA differential extraction method for sexual assault evidence. Forensic Sci Int Genet 34:170–177
Xu Y et al (2016) Fluorescence- and magnetic-activated cell sorting strategies to separate spermatozoa involving plural contributors from biological mixtures for human identification. Sci Rep 6:36515
Dean L et al (2015) Separation of uncompromised whole blood mixtures for single source STR profiling using fluorescently-labeled human leukocyte antigen (HLA) probes and fluorescence activated cell sorting (FACS). Forensic Sci Int Genet 17:8–16
Vandewoestyne M, Deforce D (2010) Laser capture microdissection in forensic research: a review. Int J Legal Med 124(6):513–521
Cerri N et al (2003) Mixed stains from sexual assault cases: autosomal or Y-chromosome short tandem repeats? Croat Med J 44(3):289–292
Andersen MM, Balding DJ (2017) How convincing is a matching Y-chromosome profile? PLoS Genet 13(11):e1007028
Kannourakis G, Bol S (1987) Fractionation of normal and beta-thalassemic human hemopoietic progenitor cells by immunomagnetic beads. Exp Hematol 15(11):1103–1108
Ravelo KM, Andersen ND, Monje PV (2018) Magnetic-activated cell sorting for the fast and efficient separation of human and rodent Schwann cells from mixed cell populations. Methods Mol Biol 1739:87–109
Li XB et al (2014) Magnetic bead-based separation of sperm from buccal epithelial cells using a monoclonal antibody against MOSPD3. Int J Legal Med 128(6):905–911
Zhao XC et al (2016) Isolating sperm from cell mixtures using magnetic beads coupled with an anti-PH-20 antibody for forensic DNA analysis. PLoS ONE 11(7):e0159401
Lin L et al (2021) Cancer-testis antigen ACRBP expression and serum immunoreactivity in ovarian cancer: its association with prognosis. Immun Inflamm Dis 9(4):1759–1770
Tanphaichitr N et al (2015) Remodeling of the plasma membrane in preparation for sperm-egg recognition: roles of acrosomal proteins. Asian J Androl 17(4):574–582
Walsh PS, Metzger DA, Higushi R (1991) Chelex 100 as a medium for simple extraction of DNA for PCR-based typing from forensic material. BioTechniques 10(4):506–13
Li W et al (2020) Forensic characteristics and phylogenetic analyses of one branch of Tai-Kadai language-speaking Hainan Hlai (Ha Hlai) via 23 autosomal STRs included in the Huaxia() Platinum System. Mol Genet Genomic Med 8(10):e1462
Johnson KL et al (2004) Interlaboratory comparison of fetal male DNA detection from common maternal plasma samples by real-time PCR. Clin Chem 50(3):516–521
Hansen MH, Clausen FB, Dziegiel MH (2012) Increased Y-chromosome detection by SRY duplexing. Fetal Diagn Ther 31(3):185–190
Grosjean F, Favre M, Castella V (2022) Comparison between MACSprep forensic sperm microbead kit and Erase Sperm Isolation kit for the enrichment of sperm fractions recovered from sexual assault samples. Int J Legal Med. https://doi.org/10.1007/s00414-022-02861-7
Wu D et al (2009) Validation of Differential Extraction Kit in forensic sexual assault cases. Fa Yi Xue Za Zhi 25(6):440–442
Iwanaga A et al (2008) Ablation of the scaffold protein JLP causes reduced fertility in male mice. Transgenic Res 17(6):1045–1058
Ribas-Maynou J et al (2015) Nuclear degraded sperm subpopulation is affected by poor chromatin compaction and nuclease activity. Andrologia 47(3):286–294
Chen J, Feng W, Zhan F (2019) Separation and forensic identification of sperm from cell mixtures using anti-hLCN6 monoclonal antibody coupled magnetic beads. Sheng Wu Gong Cheng Xue Bao 35(1):150–158
Huang G et al (2021) Removal of 1,2-benzanthracene via the intercalation of 1,2-benzanthracene with DNA and magnetic bead-based separation. Nucleosides Nucleotides Nucleic Acids 40(2):137–156
Hansenova Manaskova S et al (2016) Comparison of non-magnetic and magnetic beads in bead-based assays. J Immunol Methods 436:29–33
Funding
This study was supported by Open Project of Shanghai Key Laboratory of Forensic Medicine and Judicial Expertise by the Ministry of Justice Key Laboratory (No. KF202110) and Basic Scientific Research Project of the Ministry of Public Security (No. 3242020014).
This study was approved by the Ethics Committee of China Medical University. All the participants were included after providing the written informed consent.
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Li, Xn., Xu, Fl., Zheng, Jl. et al. Magnetic bead-based separation of sperm cells from semen-vaginal fluid mixed stains using an anti-ACRBP antibody. Int J Legal Med 137, 511–518 (2023). https://doi.org/10.1007/s00414-022-02917-8
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DOI: https://doi.org/10.1007/s00414-022-02917-8