1
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Bathrick AS, Norsworthy S, Plaza DT, McCormick MN, Slack D, Ramotowski RS. DNA recovery after sequential processing of latent fingerprints on black polyethylene plastic. J Forensic Sci 2024; 69:993-1001. [PMID: 38402545 DOI: 10.1111/1556-4029.15498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 02/12/2024] [Accepted: 02/12/2024] [Indexed: 02/26/2024]
Abstract
Latent fingerprints on plastic substrates can be visualized by using sequential treatments to enhance the contrast between the fingerprint residues and underlying substrate; however, the extent to which these processes affect subsequent DNA analysis is mostly unknown. Latent fingerprints deposited on black plastic by one donor were visualized with single-process fingerprint powders (i.e., white powder, bichromatic powder, or bichromatic magnetic powder) or sequential treatments (i.e., laser → reflected ultraviolet imaging system (RUVIS) → CA fuming → RUVIS → Rhodamine 6G, Ardrox, and MBD (RAM) or CA fuming → RAM/laser → bichromatic magnetic powder). Samples were examined after the addition of each treatment. DNA was collected using cotton swabs, extracted, quantified, and amplified. DNA yields, peak heights, number of alleles obtained, and percentage of DNA profiles eligible for CODIS upload were examined. Latent fingerprints processed with the laser and up to three sequential treatments generated DNA profiles with significantly higher peaks heights than those of the untreated samples. Fingerprints processed with the laser and up to two sequential treatments generated DNA profiles with significantly more alleles. All methods beginning with laser enhancement generated more CODIS-eligible profiles. Additional research is needed to determine the extent to which initial laser enhancement impacts the success of downstream DNA profiling results. Although DNA profile development is not guaranteed due to the variable quantities of DNA contained within latent fingerprints, the selection of an appropriate latent fingerprint visualization method could maximize both fingerprint detection and the generation of CODIS-eligible DNA profiles.
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Affiliation(s)
| | - Sarah Norsworthy
- Forensic Technology Center of Excellence, RTI International, Research Triangle Park, North Carolina, USA
| | | | - Mallory N McCormick
- Forensic Services Division, United States Secret Service, Washington, DC, USA
| | - Donia Slack
- Forensic Technology Center of Excellence, RTI International, Research Triangle Park, North Carolina, USA
| | - Robert S Ramotowski
- Forensic Services Division, United States Secret Service, Washington, DC, USA
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2
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Jansson L, Siti C, Hedell R, Forsberg C, Ansell R, Hedman J. Assessing the consistency of shedder status under various experimental conditions. Forensic Sci Int Genet 2024; 69:103002. [PMID: 38176092 DOI: 10.1016/j.fsigen.2023.103002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 12/15/2023] [Accepted: 12/16/2023] [Indexed: 01/06/2024]
Abstract
Shedder status is defined as the propensity of an individual to leave DNA behind on touched items or surfaces and has been suggested as one of the major factors influencing DNA transfer. However, little is known about whether shedder status is a constant property of an individual across multiple measurements or when the environmental conditions are changed. We have assessed DNA depositions of six males on 20 occasions to acquire a reference data set and to classify the participants into high, intermediate, or low shedders. This data set was also used to investigate how the probability of a correct shedder status classification changed when the number of DNA deposition measurements increased. Individual sweat rates were measured with a VapoMeter and data regarding hygiene routines were collected through a questionnaire on each sampling occasion. Next, we investigated how changes in the experimental conditions such as seasonal variation, hygiene routines, the temperature of the touched object, and repeated handling of an object influenced the DNA shedding. Additionally, we assessed DNA collected from the face and from T-shirts worn by the six participants to explore whether shedder status may be associated with the relative amount of DNA obtained from other body parts. Our results indicate that shedder status is a stable property across different seasons and different temperatures of handled objects. The relative DNA amounts obtained from repeatedly handled tubes, worn T-shirts, and from faces reflected the shedder status of the participants. We suggest that an individual's shedder status is highly influenced by the DNA levels on other body parts than hands, accumulating on the palms by frequently touching e.g., the face or previously handled items harboring self-DNA. Assessing physiological differences between the participants revealed that there were no associations between DNA shedding and individual sweat rates.
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Affiliation(s)
- Linda Jansson
- National Forensic Centre, Swedish Police Authority, Linköping, Sweden; Applied Microbiology, Department of Chemistry, Lund University, Lund, Sweden
| | - Chiara Siti
- Applied Microbiology, Department of Chemistry, Lund University, Lund, Sweden
| | - Ronny Hedell
- National Forensic Centre, Swedish Police Authority, Linköping, Sweden
| | | | - Ricky Ansell
- National Forensic Centre, Swedish Police Authority, Linköping, Sweden; Department of Physics, Chemistry and Biology, IFM, Linköping University, Linköping, Sweden
| | - Johannes Hedman
- National Forensic Centre, Swedish Police Authority, Linköping, Sweden; Applied Microbiology, Department of Chemistry, Lund University, Lund, Sweden.
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3
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Nou XA, Voigt CA. Sentinel cells programmed to respond to environmental DNA including human sequences. Nat Chem Biol 2024; 20:211-220. [PMID: 37770697 DOI: 10.1038/s41589-023-01431-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 08/31/2023] [Indexed: 09/30/2023]
Abstract
Monitoring environmental DNA can track the presence of organisms, from viruses to animals, but requires continuous sampling of transient sequences from a complex milieu. Here we designed living sentinels using Bacillus subtilis to report the uptake of a DNA sequence after matching it to a preencoded target. Overexpression of ComK increased DNA uptake 3,000-fold, allowing for femtomolar detection in samples dominated by background DNA. This capability was demonstrated using human sequences containing single-nucleotide polymorphisms (SNPs) associated with facial features. Sequences were recorded with high efficiency and were protected from nucleases for weeks. The SNP could be determined by sequencing or in vivo using CRISPR interference to turn on reporter expression in response to a specific base. Multiple SNPs were recorded by one cell or through a consortium in which each member recorded a different sequence. Sentinel cells could surveil for specific sequences over long periods of time for applications spanning forensics, ecology and epidemiology.
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Affiliation(s)
- Xuefei Angelina Nou
- Synthetic Biology Center, Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Christopher A Voigt
- Synthetic Biology Center, Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
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4
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Sessa F, Pomara C, Esposito M, Grassi P, Cocimano G, Salerno M. Indirect DNA Transfer and Forensic Implications: A Literature Review. Genes (Basel) 2023; 14:2153. [PMID: 38136975 PMCID: PMC10742555 DOI: 10.3390/genes14122153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 11/22/2023] [Accepted: 11/27/2023] [Indexed: 12/24/2023] Open
Abstract
Progress in DNA profiling techniques has made it possible to detect even the minimum amount of DNA at a crime scene (i.e., a complete DNA profile can be produced using as little as 100 pg of DNA, equivalent to only 15-20 human cells), leading to new defense strategies. While the evidence of a DNA trace is seldom challenged in court by a defendant's legal team, concerns are often raised about how the DNA was transferred to the location of the crime. This review aims to provide an up-to-date overview of the experimental work carried out focusing on indirect DNA transfer, analyzing each selected paper, the experimental method, the sampling technique, the extraction protocol, and the main results. Scopus and Web of Science databases were used as the search engines, including 49 papers. Based on the results of this review, one of the factors that influence secondary transfer is the amount of DNA shed by different individuals. Another factor is the type and duration of contact between individuals or objects (generally, more intimate or prolonged contact results in more DNA transfer). A third factor is the nature and quality of the DNA source. However, there are exceptions and variations depending on individual characteristics and environmental conditions. Considering that secondary transfer depends on multiple factors that interact with each other in unpredictable ways, it should be considered a complex and dynamic phenomenon that can affect forensic investigation in various ways, for example, placing a subject at a crime scene who has never been there. Correct methods and protocols are required to detect and prevent secondary transfer from compromising forensic evidence, as well as the correct interpretation through Bayesian networks. In this context, the definition of well-designed experimental studies combined with the use of new forensic techniques could improve our knowledge in this challenging field, reinforcing the value of DNA evidence in criminal trials.
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Affiliation(s)
- Francesco Sessa
- Department of Medical, Surgical and Advanced Technologies “G.F. Ingrassia”, University of Catania, 95121 Catania, Italy; (C.P.); (M.S.)
| | - Cristoforo Pomara
- Department of Medical, Surgical and Advanced Technologies “G.F. Ingrassia”, University of Catania, 95121 Catania, Italy; (C.P.); (M.S.)
| | | | - Patrizia Grassi
- “Vittorio Emanuele” Hospital, University of Catania, 95121 Catania, Italy;
| | - Giuseppe Cocimano
- Department of Mental and Physical Health and Preventive Medicine, University of Campania “Vanvitelli”, 80121 Napoli, Italy;
| | - Monica Salerno
- Department of Medical, Surgical and Advanced Technologies “G.F. Ingrassia”, University of Catania, 95121 Catania, Italy; (C.P.); (M.S.)
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5
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Recipon M, Agniel R, Leroy-Dudal J, Fritz T, Carreiras F, Hermitte F, Hubac S, Gallet O, Kellouche S. Targeting cell-derived markers to improve the detection of invisible biological traces for the purpose of genetic-based criminal identification. Sci Rep 2023; 13:18105. [PMID: 37872292 PMCID: PMC10593828 DOI: 10.1038/s41598-023-45366-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 10/18/2023] [Indexed: 10/25/2023] Open
Abstract
At a crime scene, investigators are faced with a multitude of traces. Among them, biological traces are of primary interest for the rapid genetic-based identification of individuals. "Touch DNA" consists of invisible biological traces left by the simple contact of a person's skin with objects. To date, these traces remain undetectable with the current methods available in the field. This study proposes a proof-of-concept for the original detection of touch DNA by targeting cell-derived fragments in addition to DNA. More specifically, adhesive-structure proteins (laminin, keratin) as well as carbohydrate patterns (mannose, galactose) have been detected with keratinocyte cells derived from a skin and fingermark touch-DNA model over two months in outdoor conditions. Better still, this combinatory detection strategy is compatible with DNA profiling. This proof-of-concept work paves the way for the optimization of tools that can detect touch DNA, which remains a real challenge in helping investigators and the delivery of justice.
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Affiliation(s)
- Mathilde Recipon
- Equipe de Recherche sur les Relations Matrice Extracellulaire-Cellules, ERRMECe, (EA1391), Groupe Matrice Extracellulaire et Physiopathologie (MECuP), Institut des Matériaux, I-MAT (FD4122), CY Cergy Paris Université, Neuville sur Oise, France.
- Institut de Recherche Criminelle de la Gendarmerie Nationale, Cergy-Pontoise, France.
| | - Rémy Agniel
- Equipe de Recherche sur les Relations Matrice Extracellulaire-Cellules, ERRMECe, (EA1391), Groupe Matrice Extracellulaire et Physiopathologie (MECuP), Institut des Matériaux, I-MAT (FD4122), CY Cergy Paris Université, Neuville sur Oise, France
| | - Johanne Leroy-Dudal
- Equipe de Recherche sur les Relations Matrice Extracellulaire-Cellules, ERRMECe, (EA1391), Groupe Matrice Extracellulaire et Physiopathologie (MECuP), Institut des Matériaux, I-MAT (FD4122), CY Cergy Paris Université, Neuville sur Oise, France
| | - Thibaud Fritz
- Institut de Recherche Criminelle de la Gendarmerie Nationale, Cergy-Pontoise, France
| | - Franck Carreiras
- Equipe de Recherche sur les Relations Matrice Extracellulaire-Cellules, ERRMECe, (EA1391), Groupe Matrice Extracellulaire et Physiopathologie (MECuP), Institut des Matériaux, I-MAT (FD4122), CY Cergy Paris Université, Neuville sur Oise, France
| | - Francis Hermitte
- Institut de Recherche Criminelle de la Gendarmerie Nationale, Cergy-Pontoise, France
| | - Sylvain Hubac
- Institut de Recherche Criminelle de la Gendarmerie Nationale, Cergy-Pontoise, France
| | - Olivier Gallet
- Equipe de Recherche sur les Relations Matrice Extracellulaire-Cellules, ERRMECe, (EA1391), Groupe Matrice Extracellulaire et Physiopathologie (MECuP), Institut des Matériaux, I-MAT (FD4122), CY Cergy Paris Université, Neuville sur Oise, France
| | - Sabrina Kellouche
- Equipe de Recherche sur les Relations Matrice Extracellulaire-Cellules, ERRMECe, (EA1391), Groupe Matrice Extracellulaire et Physiopathologie (MECuP), Institut des Matériaux, I-MAT (FD4122), CY Cergy Paris Université, Neuville sur Oise, France
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6
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Carlin M, Nickel R, Halstead K, Viray J, Hall A, Ehrlich A. Quantifying DNA loss in laboratory-created latent prints due to fingerprint processing. Forensic Sci Int 2023; 344:111595. [PMID: 36805977 DOI: 10.1016/j.forsciint.2023.111595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 12/16/2022] [Accepted: 02/01/2023] [Indexed: 02/05/2023]
Abstract
Fingerprints, which are associated with touch samples, typically contain a limited amount of DNA. The amount of available DNA can be further reduced when the same touch samples undergo fingerprint processing [1]. The fingerprint development process consists of high-powered lighting (inherent luminescence and UV light) and chemical compounds (ninhydrin, black powder, cyanoacrylate, and rhodamine 6 G) which could reduce DNA quality and quantity. Therefore, forensic scientists often must select one type of analysis over the other due to the destructive nature of processing. DNA and latent fingerprinting are both useful sources for identification, although both can produce partial results. A partial DNA profile may only contain a few alleles, limiting the ability to identify a potential suspect to perform comparisons. A partial fingerprint generally means that only a very small part of the fingerprint is present, which makes comparisons difficult. Because partial results are common, combining data from both fingerprinting and DNA analysis would increase the confidence of an identification of a person. Significant research has been performed to determine if a DNA profile can be obtained from latent processed fingerprints; however, there has yet to be research done in a standardized manner. In this study, we used standardized mock "fingerprints" in order to reduce fingerprint DNA variability and specifically focused on DNA quantitation after each step in the fingerprinting process. Results suggest that latent print processing techniques used on non-porous surfaces (plastic, duct-tape, metal, and rubber) do not affect DNA quantity or quality. In contrast, ninhydrin, a chemical used for processing fingerprints present on porous surfaces (wood and paper), significantly reduced DNA recovery. Together these results suggest that DNA can still be performed on latent print processed items, unless ninhydrin has been used.
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Affiliation(s)
- Madison Carlin
- Forensic Sciences Graduate Group, University of California, Davis, CA, USA; Sacramento County District Attorney's Laboratory of Forensic Services, Sacramento, CA, USA; Michigan State Police, Forensic Science Division, Grand Rapids, MI, USA
| | - Ryan Nickel
- Sacramento County District Attorney's Laboratory of Forensic Services, Sacramento, CA, USA
| | | | - Joy Viray
- Sacramento County District Attorney's Laboratory of Forensic Services, Sacramento, CA, USA
| | - Ashley Hall
- Forensic Sciences Graduate Group, University of California, Davis, CA, USA
| | - Allison Ehrlich
- Forensic Sciences Graduate Group, University of California, Davis, CA, USA; Department of Environmental Toxicology, University of California, Davis, CA, USA.
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7
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von Máriássy D, Reibke R, Verbeek M, Gätjens B, Schiller R, Anslinger K. STR typing of skin swabs from individuals after an allogeneic hematopoietic stem cell transplantation. Int J Legal Med 2023; 137:227-236. [PMID: 35657433 PMCID: PMC9816181 DOI: 10.1007/s00414-022-02847-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 05/27/2022] [Indexed: 01/11/2023]
Abstract
One of the pre-requisites for forensic DNA analysis is the fact that all nucleated cells of a person carry the same genetic information. However, this is not the case for individuals who have received an allogeneic hematopoietic stem cell or bone marrow transplantation, as all new cells formed by the bone marrow no longer show the genetic information of the recipient but that of the donor, while all other cells still carry the original information before transplantation. Thus, STR typing of a blood sample after successful transplantation yields a DNA profile that differs from the recipient's original profile and corresponds to the donor genotype instead. Evidence from a routine case suggests that transplanted individuals may show donor alleles in skin swabs, as well. In order to examine this issue more closely, various skin swabs from 28 patients who have received an allogeneic hematopoietic stem cell transplantation were examined in this study. Swabs from the right and left palm, the back of the hand, one of the two upper arms, and the neck were collected from each person. Ninety-one of the 140 resulting swabs delivered useful results. All of those samples showed mixtures of recipient and donor DNA with different mixture ratios and the proportions of donor and recipient alleles revealed inter- and intra-individual differences. Those results were discussed with respect to graft versus host disease.
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Affiliation(s)
- Dagmar von Máriássy
- Institute of Legal Medicine, Ludwig-Maximilians-University, Nußbaumstr. 26, 80336, Munich, Germany.
| | - Roland Reibke
- Department of Internal Medicine I, Klinikum Bad Trissl, Oberaudorf, Germany
| | - Mareike Verbeek
- Department of Internal Medicine III, Klinikum Rechts Der Isar, Technische Universität München, Munich, Germany
| | - Britta Gätjens
- Institute of Legal Medicine, Ludwig-Maximilians-University, Nußbaumstr. 26, 80336, Munich, Germany
| | - Roberta Schiller
- Institute of Legal Medicine, Ludwig-Maximilians-University, Nußbaumstr. 26, 80336, Munich, Germany
| | - Katja Anslinger
- Institute of Legal Medicine, Ludwig-Maximilians-University, Nußbaumstr. 26, 80336, Munich, Germany
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8
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Qian X, Li Z, Zhou Z, Qian J, Yao Y, Shao C, Tang Q, Xie J. Investigation of Linear Amplification Using Abasic Site-Containing Primers Coupled to Routine STR Typing for LT-DNA Analysis. Genes (Basel) 2022; 13:genes13081386. [PMID: 36011297 PMCID: PMC9407227 DOI: 10.3390/genes13081386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 07/31/2022] [Accepted: 08/01/2022] [Indexed: 12/10/2022] Open
Abstract
Obtaining a full short tandem repeat (STR) profile from a low template DNA (LT-DNA) still presents a challenge for conventional methods due to significant stochastic effects and polymerase slippage. A novel amplification method with a lower cost and higher accuracy is required to improve the DNA amount. Previous studies suggested that DNA polymerases without bypass activity could not perform processive DNA synthesis beyond abasic sites in vitro and our results showed a lack of bypass activity for Phusion, Pfu and KAPA DNA polymerases in this study. Based on this feature, we developed a novel linear amplification method, termed Linear Aamplification for double-stranded DNA using primers with abasic sites near 3′ end (abLAFD), to limit the replication error. The amplification efficiency was evaluated by qPCR analysis with a result of approximately a 130-fold increase in target DNA. In a LT-DNA analysis, the abLAFD method can be employed as a pre-PCR. Similar to nested PCRs, primer sets used for the abLAFD method were designed as external primers suitable for commercial multiplex STR amplification assays. The practical performance of the abLAFD method was evaluated by coupling it to a routine PP21 STR analysis using 50 pg and 25 pg DNA. Compared to reference profiles, all abLAFD profiles showed significantly recovered alleles, increased average peak height and heterozygote balance with a comparable stutter ratio. Altogether, our results support the theory that the abLAFD method is a promising strategy coupled to STR typing for forensic LT-DNA analysis.
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Affiliation(s)
- Xiaoqin Qian
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Zhimin Li
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Zhihan Zhou
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Jinglei Qian
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Yining Yao
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Chengchen Shao
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Qiqun Tang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Jianhui Xie
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
- Correspondence: ; Tel.: +86-021-54237403
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9
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Elwick K, Gauthier Q, Rink S, Cropper E, Kavlick MF. Recovery of DNA from fired and unfired cartridge casings: comparison of two DNA collection methods. Forensic Sci Int Genet 2022; 59:102726. [PMID: 35660851 DOI: 10.1016/j.fsigen.2022.102726] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 04/22/2022] [Accepted: 05/17/2022] [Indexed: 01/14/2023]
Abstract
For over 10 years, various studies have attempted to increase the recovery of DNA from ammunition by modifying the DNA collection, extraction, purification, and amplification procedures, with varying levels of success. This study focused on the "soaking" method of Montpetit & O'Donnell [1] and the "rinse-and-swab" method of Bille et al. [2]. First, testing for the presence of exogenous DNA, 210 boxed cartridges (brass, steel, and nickel-plated) from nine manufacturers were swabbed and DNA was extracted, concentrated, and quantified. Extracts that quantified > 0 ng/µL (44 of 210) were amplified and genotyped with GlobalFiler™. Of those, only one extract yielded two alleles indicating that the manufacturing and packaging of ammunition was virtually DNA free. Next, to obtain a baseline comparison of two DNA collection methods on a non-metallic substrate and identify a suitable number of cells to spot on cartridges, different DNA input amounts of primary human adult epidermal keratinocytes (HEKa) were tested. Thereafter, 300 brass and 300 nickel-plated, cartridges were spotted with HEKa cells containing ~5 ng of DNA, fired or unfired, and processed with either method. Finally, five methods representing hybrids of the soaking and rinse-and-swab methods were tested to determine if variations of those methods could be used to increase DNA yield and recovery. The results show that the soaking method consistently yielded more DNA than the rinse-and-swab method from a non-metallic substrate. However, the comparison study demonstrated that both methods performed comparably for cartridges. On average, the soaking method recovered 0.25 ng of DNA (5.1% recovery) and the rinse-and-swab method recovered 0.28 ng (5.8% recovery). However, average recoveries were significantly different among three analysts and considerable variation in yields were observed, possibly due to storage time. Furthermore, consistent with prior reports, the DNA recovered from brass casings was only 16% of that recovered from nickel-plated casings and the average yield of DNA from fired casings was reduced to 67% of unfired casings. Moreover, DNA extracts from brass or nickel-plated casings did not appear to contain amplification inhibitors and only 30/596 appeared severely degraded. Finally, both the published rinse-and-swab and soaking methods yielded more DNA than all modifications of the two methods. Overall, both methods yielded equivalent DNA quantities. Additionally, recovery of DNA from any given cartridge casing may be dependent on storage time as well as the skill, proficiency, and experience of the analyst and may reflect stochastic effects, particularly for casings containing low copy and/or degraded DNA.
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Affiliation(s)
- Kyleen Elwick
- Visiting Scientist Program, Federal Bureau of Investigation Laboratory Division, Research and Support Unit, 2501 Investigation Parkway, Quantico, VA 22135, USA
| | - Quentin Gauthier
- Visiting Scientist Program, Federal Bureau of Investigation Laboratory Division, Research and Support Unit, 2501 Investigation Parkway, Quantico, VA 22135, USA
| | - Stephanie Rink
- Visiting Scientist Program, Federal Bureau of Investigation Laboratory Division, Research and Support Unit, 2501 Investigation Parkway, Quantico, VA 22135, USA
| | - Emily Cropper
- Visiting Scientist Program, Federal Bureau of Investigation Laboratory Division, Research and Support Unit, 2501 Investigation Parkway, Quantico, VA 22135, USA
| | - Mark F Kavlick
- Federal Bureau of Investigation Laboratory Division, Research and Support Unit, 2501 Investigation Parkway, Quantico, VA 22135, USA.
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10
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Poetsch M, Markwerth P, Konrad H, Bajanowski T, Helmus J. About the influence of environmental factors on the persistence of DNA - a long-term study. Int J Legal Med 2022; 136:687-693. [PMID: 35195781 PMCID: PMC9005405 DOI: 10.1007/s00414-022-02800-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 02/09/2022] [Indexed: 11/05/2022]
Abstract
DNA persistence and DNA transfer are important features in the assessment of a crime scene. The question how long DNA may persist at a certain location is similarly important as the one how the DNA has been transferred to this location. Depending on the source of the DNA as well as the conditions at the crime scene, the answer to this question is quite difficult. In this study, persistence of DNA from epithelial abrasions, blood cells, and saliva cells in indoor and outdoor scenarios has been investigated with regard to exposure time and exposure conditions including sunlight, temperature, and humidity in summer and winter scenarios. Overall, we generated 338 epithelial samples, 572 blood samples, and 572 saliva samples. A complete profile of the cell/DNA donor after exposure could be obtained in 47%, 65%, and 58% of epithelial abrasions, blood samples, and saliva samples, respectively. Regarding blood samples, there were no differences between supporting materials cloth and plastic; however, the percentage of complete profiles was higher for saliva samples on plastic and for epithelial samples on cloth. In indoor scenarios, complete profiles could be recovered from nearly all blood and saliva samples up to 9 months, whereas the amount of epithelial complete profiles already started to decline after 3 months. In outdoor scenarios, we observed a tipping point at an exposure time of 3 months. Blood and saliva samples collected after this period displayed complete profiles in less than 25% of samples. After 12 months, no outdoor sample showed a complete profile. The results of this study facilitate decisions on the relevance of recovered DNA from crime scenes.
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Affiliation(s)
- Micaela Poetsch
- Institute of Legal Medicine, University Hospital Essen, Hufelandstr. 55, 45122, Essen, Germany.
| | - Philipp Markwerth
- Institute of Legal Medicine, University Hospital Essen, Hufelandstr. 55, 45122, Essen, Germany
| | - Helen Konrad
- Institute of Legal Medicine, University Hospital Essen, Hufelandstr. 55, 45122, Essen, Germany
| | - Thomas Bajanowski
- Institute of Legal Medicine, University Hospital Essen, Hufelandstr. 55, 45122, Essen, Germany
| | - Janine Helmus
- Institute of Legal Medicine, University Hospital Essen, Hufelandstr. 55, 45122, Essen, Germany
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11
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DNA deposited in whole thumbprints: a reproducibility study. Forensic Sci Int Genet 2022; 58:102683. [DOI: 10.1016/j.fsigen.2022.102683] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 02/21/2022] [Accepted: 02/24/2022] [Indexed: 01/27/2023]
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12
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Khare V, Singla A. A review on the advancements in chemical examination of composition of latent fingerprint residues. EGYPTIAN JOURNAL OF FORENSIC SCIENCES 2022. [DOI: 10.1186/s41935-021-00262-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
There are notable developments in the field of DNA analysis and recognition, still fingerprint analysis remains the most preferred approach for obtaining substantial forensic evidences. The identification of individuals through pattern comparison has been used through ages, but it becomes less effective when the pattern is blurred, partial in nature or not found in database. Thus, recent advances in analytical techniques over the last decade will provide additional information to the evidence. In the view of forensic investigations, the compilation of individual chemical profiles with the pattern would enhance the evidentiary value of the latent fingerprints.
Main body
The review has been divided into different parts, describing the various influencing factors which affect the chemical composition of a fingerprint, i.e., lifestyle and occupation, age of an individual, types of substrate on which fingerprint is deposited, environmental conditions, contaminants, and the various advanced instrumental techniques utilized till now in the detection of chemical constituents of fingerprint have been discussed.
Conclusion
The present work aims to enlighten the missing gaps of knowledge in elucidating the detailed chemical composition of fingerprints and highlight the various analytical techniques used till date. Though, there are several analytical techniques employed till date to explicate the constituents of fingerprints, detailed information is still lacking. Therefore, advanced future research is need of the hour for identification of the fingerprints and determining their aging kinetics.
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13
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Ruprecht R, Suter R, Manganelli M, Wehrli A, Ender M, Jung B. Collection of evidence from the reverse side of self-adhesive stamps: A combined approach to obtain dactyloscopic and DNA evidence. Forensic Sci Int 2021; 330:111123. [PMID: 34883300 DOI: 10.1016/j.forsciint.2021.111123] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 11/18/2021] [Accepted: 11/21/2021] [Indexed: 11/29/2022]
Abstract
The commonly applied method for the examination of self-adhesive stamps mainly focuses on DNA-profiling while neglecting potential fingerprint evidence. In our preliminary study it was shown that in an uncontrolled environment, fingerprints are transferred from the adhesive side of stamps onto the envelope within the first two days after application. Fingerprints can therefore be examined independently after the separation of the stamp from the envelope. The aim of this study was to develop a novel approach, which enables the combination of fingerprint development and the analysis of DNA traces originating from the same evidence, and to implement this into routine processes. Furthermore, this approach was compared with the edge fragment approach, the commonly applied standard method in our laboratory. The results showed that the novel approach is very beneficial for forensic examination of self-adhesive postage stamps on letters. Moreover, it enables parallel evaluation of dactyloscopic and DNA evidence without having an increased risk of contamination, PCR interference or altering of the fingerprint. The chance of obtaining useful forensic evidence for downstream database searching was increased from 50.0% to 83.3%. This novel method was shown to be valuable for the parallel evaluation of dactyloscopic and DNA trace material originating from the same evidence.
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Affiliation(s)
- Rahel Ruprecht
- Institut für Rechtsmedizin Aargau, Kantonsspital Aarau AG, Aarau, Switzerland.
| | - Roger Suter
- Kriminaltechnik, Kantonspolizei Aargau, Aarau, Switzerland
| | | | - Andreas Wehrli
- Institut für Rechtsmedizin Aargau, Kantonsspital Aarau AG, Aarau, Switzerland
| | - Miriam Ender
- Institut für Rechtsmedizin Aargau, Kantonsspital Aarau AG, Aarau, Switzerland
| | - Balthasar Jung
- Kriminaltechnik, Kantonspolizei Aargau, Aarau, Switzerland
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14
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Jansson L, Swensson M, Gifvars E, Hedell R, Forsberg C, Ansell R, Hedman J. Individual shedder status and the origin of touch DNA. Forensic Sci Int Genet 2021; 56:102626. [PMID: 34781198 DOI: 10.1016/j.fsigen.2021.102626] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 10/27/2021] [Accepted: 10/27/2021] [Indexed: 11/17/2022]
Abstract
Due to improved laboratory techniques, touched surfaces and items are increasingly employed as sources of forensic DNA evidence. This has urged a need to better understand the mechanisms of DNA transfer between individuals. Shedder status (i.e. the propensity to leave DNA behind) has been identified as one major factor regulating DNA transfer. It is known that some individuals tend to shed more DNA than others, but the mechanisms behind shedder status are largely unknown. By comparing the amounts of DNA deposited from active hands (i.e. used "as usual") and inactive hands (i.e. not allowed to touch anything), we show that some of the self-DNA deposited from hands is likely to have accumulated on hands from other parts of the body or previously handled items (active hands: 2.1 ± 2.7 ng, inactive hands: 0.83 ± 1.1 ng, paired t-test: p = 0.014, n = 27 pairs of hands). Further investigation showed that individual levels of deposited DNA are highly associated with the level of DNA accumulation on the skin of the face (Pearson's correlation: r = 0.90, p < 0.00001 and Spearman's ranked correlation: rs = 0.56, p = 0.0016, n = 29). We hypothesized that individual differences in sebum secretion levels could influence the amount of DNA accumulation in facial areas, but no such correlation was seen (Pearson's correlation: r = - 0.13, p = 0.66, n = 14). Neither was there any correlation between DNA levels on hands or forehead and the time since hand or face wash. We propose that the amount of self-DNA deposited from hands is highly influenced by the individual levels of accumulated facial DNA, and that cells/DNA is often transferred to hands by touching or rubbing one's face.
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Affiliation(s)
- Linda Jansson
- National Forensic Centre, Swedish Police Authority, Linköping, Sweden; Applied Microbiology, Department of Chemistry, Lund University, Lund, Sweden
| | - Marie Swensson
- Applied Microbiology, Department of Chemistry, Lund University, Lund, Sweden
| | - Emma Gifvars
- Applied Microbiology, Department of Chemistry, Lund University, Lund, Sweden
| | - Ronny Hedell
- National Forensic Centre, Swedish Police Authority, Linköping, Sweden
| | | | - Ricky Ansell
- National Forensic Centre, Swedish Police Authority, Linköping, Sweden; Department of Physics, Chemistry and Biology, IFM, Linköping University, Linköping, Sweden
| | - Johannes Hedman
- National Forensic Centre, Swedish Police Authority, Linköping, Sweden; Applied Microbiology, Department of Chemistry, Lund University, Lund, Sweden.
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15
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Einsatz der Cyanacrylat-Bedampfungspistole Hussa zur Visualisierung daktyloskopischer und humanbiologischer Spuren am Tatort – Eine Validierungsstudie. Rechtsmedizin (Berl) 2021. [DOI: 10.1007/s00194-021-00538-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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16
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Bathrick AS, Norsworthy S, Plaza DT, McCormick MN, Slack D, Ramotowski RS. DNA recovery after sequential processing of latent fingerprints on copy paper. J Forensic Sci 2021; 67:149-160. [PMID: 34498754 PMCID: PMC9291209 DOI: 10.1111/1556-4029.14881] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 07/22/2021] [Accepted: 08/17/2021] [Indexed: 12/01/2022]
Abstract
Forensic examiners must determine whether both latent fingerprint development and DNA profiling can be performed on the same area of an evidence item and, if only one is possible, which examination offers the best chance for identification. Latent fingerprints can be enhanced by targeting different components of fingerprint residues with sequential chemical treatments. This study investigated the effects of single-reagent and sequential latent fingerprint development processes on downstream DNA analysis to determine the point at which latent fingerprint development should be stopped to allow for DNA recovery. Latent fingerprints deposited on copy paper by one donor were developed using three sequential processes: 1,8-diazafluoren-9-one (DFO) → ninhydrin → physical developer (PD); 1,2-indanedione-zinc (IND-Zn) → ninhydrin → PD; and IND-Zn → ninhydrin → Oil Red O (ORO) → PD. Samples were examined after the addition of each chemical treatment. DNA was collected with cotton swabs, extracted, quantified, and amplified. DNA yields, peak heights, number of alleles obtained, and percentage of DNA profiles eligible for CODIS upload were examined. DNA profiles were obtained with varying degrees of success, depending on the number and type of treatments used for latent fingerprint development. The treatments that were found to be the least harmful to downstream DNA analysis were IND-Zn and IND-Zn/laser, and the most detrimental treatments were DFO, DFO/laser, and PD. In general, as the number of treatments increase, the opportunities for DNA loss or damage also increase, and it is preferable to use fewer treatments when developing latent fingerprints prior to downstream DNA processing.
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Affiliation(s)
| | - Sarah Norsworthy
- Forensic Technology Center of Excellence, RTI International, Research Triangle Park, NC, USA
| | | | - Mallory N McCormick
- Forensic Services Division, United States Secret Service, Washington, DC, USA
| | - Donia Slack
- Forensic Technology Center of Excellence, RTI International, Research Triangle Park, NC, USA
| | - Robert S Ramotowski
- Forensic Services Division, United States Secret Service, Washington, DC, USA
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17
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Tiedge TM, Nagachar N, Wendt FR, Lakhtakia A, Roy R. High-throughput DNA sequencing of environmentally insulted latent fingerprints after visualization with nanoscale columnar-thin-film technique. Sci Justice 2021; 61:505-515. [PMID: 34482930 DOI: 10.1016/j.scijus.2021.06.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 04/17/2021] [Accepted: 06/05/2021] [Indexed: 11/19/2022]
Abstract
The goals of this study were to (a) ascertain human identity capabilities of DNA obtained from latent fingerprints that have been first environmentally insulted and then developed by the deposition of a columnar thin film (CTF), and (b) to determine if the CTF process and material are detrimental to single nucleotide polymorphism (SNP) analysis. Fingerprints were deposited on five different types of substrates and aged for one day, 7 days or 30 days while being environmentally insulted under one of the four conditions: 16.6 °C and 60% relative humidity (RH) (Condition A), 24.5 °C and 60% RH (Condition B), 35 °C and 67% RH (Condition C) and a cold condition (Condition D). Then CTF technique was then on 59% of these fingerprints. DNA samples from 805 fingerprints were extracted, quantified, subjected to manual library preparation using the Precision ID Identity Panel, and underwent high-throughput sequencing. The Ion S5™ platform was employed to sequence 124 SNP amplicons. SNPs were successfully sequenced from 802/805 samples. Total read depth was consistent across environmental conditions, and majority of samples had 100% profile completeness and 100% concordance. Anecdotally, libraries that were amplified with a higher cycle number had more 'Major Allele Frequency' flags compared to samples amplified with 23 cycle numbers, possibly due to stochastic effects. Neither the substrates nor the CTF process and materials inhibit downstream DNA analysis. DNA of low quality and quantity from the chosen samples can be sequenced using the Precision ID Identity Panel on the Ion S5™ platform which performed well, however, a different approach may be needed if spurious alleles are suspected.
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Affiliation(s)
- Teresa M Tiedge
- Forensic Science Program and Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, PA 16802, USA
| | - Nivedita Nagachar
- Forensic Science Program and Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, PA 16802, USA
| | - Frank R Wendt
- Department of Psychiatry, Yale University School of Medicine & VA CT Healthcare System, New Haven, CT 06511, USA
| | - Akhlesh Lakhtakia
- Materials Research Institute and Department of Engineering Science and Mechanics, Pennsylvania State University, University Park, PA 16802, USA
| | - Reena Roy
- Forensic Science Program and Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, PA 16802, USA.
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18
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Shedder status: Exploring means of determination. Sci Justice 2021; 61:391-400. [DOI: 10.1016/j.scijus.2021.03.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 03/09/2021] [Accepted: 03/13/2021] [Indexed: 01/29/2023]
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19
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Burrill J, Hotta R, Daniel B, Frascione N. Accumulation of endogenous and exogenous nucleic acids in "Touch DNA" components on hands. Electrophoresis 2021; 42:1594-1604. [PMID: 34080688 DOI: 10.1002/elps.202000371] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 05/07/2021] [Accepted: 05/20/2021] [Indexed: 02/03/2023]
Abstract
Successful forensic DNA profiling from handled items is increasingly routine in casework. This "touch DNA" is thought to contain both cellular and acellular nucleic acid sources. However, there is little clarity on the origins or characteristics of this material. The cellular component consists of anucleate, terminally differentiated corneocytes (assumed to lack DNA), and the occasional nucleated cell. The acellular DNA source is fragmentary, presumably cell breakdown products. This study examines the relative contributions each component makes to the hand-secretions (endogenous) and hand-accumulations (exogenous) by recovering rinses from the inside and outside of worn gloves. Additionally, cellular and acellular DNA was measured at timepoints up to 2 h after hand washing, both with and without interim contact. Microscopic examination confirmed cell morphology and presence of nucleic acids. Following the novel application of a hair keratinocyte lysis method and plasma-DNA fragment purification to hand rinse samples, DNA profiles were generated from both fractions. Exogenous cell-free DNA is shown to be a significant source of touch DNA, which reaccumulates quickly, although its amplifiable nuclear alleles are limited. Endogenous DNA is mostly cellular in origin and provides more allelic information consistently over time.
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Affiliation(s)
- Julia Burrill
- King's Forensics, Department of Analytical, Environmental & Forensic Sciences, School of Population Health & Environmental Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Rachel Hotta
- King's Forensics, Department of Analytical, Environmental & Forensic Sciences, School of Population Health & Environmental Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Barbara Daniel
- King's Forensics, Department of Analytical, Environmental & Forensic Sciences, School of Population Health & Environmental Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Nunzianda Frascione
- King's Forensics, Department of Analytical, Environmental & Forensic Sciences, School of Population Health & Environmental Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
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20
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Schmidt M, Bamberg M, Dierig L, Kunz SN, Wiegand P. The diversity of shedder tests and a novel factor that affects DNA transfer. Int J Legal Med 2021; 135:1267-1280. [PMID: 33783604 DOI: 10.1007/s00414-021-02533-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 02/10/2021] [Indexed: 01/27/2023]
Abstract
Since the first shedder test was formulated almost 20 years ago, a plethora of different test strategies has emerged. The amount of data generated so far is considerable. However, because of the limited reproducibility of its results, the reliability of the shedder concept is frequently questioned. This study provides a literature overview of applied shedder tests that capture the diversity of the concept. It is pointed out to what extent different classification criteria, workflows, and trace evaluation can impair the classification outcome. The robustness of shedder status was assessed by applying a promising approach established by Fonneløp et al. (Forensic Sci Int Genet 29:48-60, 21). Data provide similar results to those in recent studies but also ambiguous shedder classifications. The applied shedder test was adapted based on our own as well as the reviewed data. With novel classification parameters, promising results were achieved. This study reveals uncertainties and inconsistencies of the shedder concept. Recommendations for harmonization and transparency are proposed. Implementation of the recommendations may result in an increased impact on casework and transfer studies, including activity-level assessments. Furthermore, this study shows that moisturizers affect participants' shedder status as well as DNA transfer. The impact appears to remain relevant even 60 min post ointment application but depends greatly on the type of moisturizer applied.
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Affiliation(s)
- Max Schmidt
- Institute of Legal Medicine, University Ulm, Albert-Einstein-Allee 23, 89081, Ulm, Germany.
| | - Malte Bamberg
- Institute of Legal Medicine, University Ulm, Albert-Einstein-Allee 23, 89081, Ulm, Germany
| | - Lisa Dierig
- Institute of Legal Medicine, University Ulm, Albert-Einstein-Allee 23, 89081, Ulm, Germany
| | - Sebastian N Kunz
- Institute of Legal Medicine, University Ulm, Albert-Einstein-Allee 23, 89081, Ulm, Germany
| | - Peter Wiegand
- Institute of Legal Medicine, University Ulm, Albert-Einstein-Allee 23, 89081, Ulm, Germany
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21
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Martin B, Linacre A. Direct PCR: A review of use and limitations. Sci Justice 2020; 60:303-310. [PMID: 32650932 DOI: 10.1016/j.scijus.2020.04.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 02/17/2020] [Accepted: 04/05/2020] [Indexed: 10/24/2022]
Affiliation(s)
- Belinda Martin
- College of Science and Engineering, Flinders University, SA 5042, Australia.
| | - Adrian Linacre
- College of Science and Engineering, Flinders University, SA 5042, Australia
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22
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Burrill J, Daniel B, Frascione N. Illuminating touch deposits through cellular characterization of hand rinses and body fluids with nucleic acid fluorescence. Forensic Sci Int Genet 2020; 46:102269. [PMID: 32155589 DOI: 10.1016/j.fsigen.2020.102269] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 02/20/2020] [Accepted: 02/29/2020] [Indexed: 12/23/2022]
Abstract
Forensic DNA typing from touched or handled items in routine casework is increasing as the sensitivity of detection techniques improves. Our understanding of the cellular/acellular content of touch deposits and the origins of the DNA therein is still limited. This work explores the cellular content of rinses from washed and unwashed hands, as well as saliva, nasal and eye washes which could be sources of transferred DNA onto hands. Flow cytometry and microscopic examination were used to detect granularity, size and nucleic acid fluorescence data. Cellular content did not vary significantly within an individual, although some differences were observed between donors. Saliva contained populations of nucleated epithelia as well as smaller cells and debris, all positive for DNA. Hand rinses consisted almost entirely of anucleate corneocytes, many of which also stained positive for nucleic acids. These data raise questions about shed corneocyte DNA content previously assumed to be negligible.
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Affiliation(s)
- Julia Burrill
- King's Forensics, Department of Analytical, Environmental & Forensic Sciences, School of Population Health & Environmental Sciences, King's College London, Franklin-Wilkins Building, 4.122, 150 Stamford Street, London SE1 9NH, United Kingdom.
| | - Barbara Daniel
- King's Forensics, Department of Analytical, Environmental & Forensic Sciences, School of Population Health & Environmental Sciences, King's College London, Franklin-Wilkins Building, 4.122, 150 Stamford Street, London SE1 9NH, United Kingdom.
| | - Nunzianda Frascione
- King's Forensics, Department of Analytical, Environmental & Forensic Sciences, School of Population Health & Environmental Sciences, King's College London, Franklin-Wilkins Building, 4.122, 150 Stamford Street, London SE1 9NH, United Kingdom.
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23
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Dierig L, Schmidt M, Wiegand P. Looking for the pinpoint: Optimizing identification, recovery and DNA extraction of micro traces in forensic casework. Forensic Sci Int Genet 2020; 44:102191. [DOI: 10.1016/j.fsigen.2019.102191] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 10/08/2019] [Accepted: 10/17/2019] [Indexed: 12/17/2022]
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24
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Fridman C, Gonçalves FT, Francisco DO. Efficiency of Casework Direct Kit for extraction of touch DNA samples obtained from cars steering wheels. FORENSIC SCIENCE INTERNATIONAL GENETICS SUPPLEMENT SERIES 2019. [DOI: 10.1016/j.fsigss.2019.09.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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25
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Tang J, Ostrander J, Wickenheiser R, Hall A. Touch DNA in forensic science: The use of laboratory-created eccrine fingerprints to quantify DNA loss. Forensic Sci Int Synerg 2019; 2:1-16. [PMID: 32411992 PMCID: PMC7219128 DOI: 10.1016/j.fsisyn.2019.10.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 10/17/2019] [Accepted: 10/18/2019] [Indexed: 12/13/2022]
Abstract
Touch samples typically contain a limited quantity of DNA, which can be further reduced during collection and analysis. It is not clear, however, at which point(s) the majority of the DNA is lost because there is not a reliable positive control to track the quantity of DNA through the analysis procedures. To take the first step in bridging this gap, we established a set of laboratory-created eccrine, or mock, fingerprints containing known quantities of DNA. Next, we defined a set of process controls to quantify loss at key fail points in the collection/extraction procedures, analyzing a total of 1200 mock fingerprints deposited on four different surfaces. We quantified DNA loss to the surface, the swab and at extraction, completing the evaluation with ANOVA. With better understanding of DNA yields and the mechanisms of loss, targeted process improvements will bring touch DNA samples into even more routine use with standardized, optimized procedures.
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Affiliation(s)
- Jessica Tang
- University of Chicago at Illinois, Department of Biopharmaceutical Sciences, 833 S. Wood St, Chicago, IL, 60612, USA
| | - Jennifer Ostrander
- University of Chicago at Illinois, Department of Biopharmaceutical Sciences, 833 S. Wood St, Chicago, IL, 60612, USA
| | - Ray Wickenheiser
- New York State Police Crime Lab System, 1220 Washington Avenue, Building 30, Albany, NY, 12226, USA
| | - Ashley Hall
- University of Chicago at Illinois, Department of Biopharmaceutical Sciences, 833 S. Wood St, Chicago, IL, 60612, USA
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26
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Romano CG, Mangiaracina R, Donato L, D’Angelo R, Scimone C, Sidoti A. Aged fingerprints for DNA profile: First report of successful typing. Forensic Sci Int 2019; 302:109905. [DOI: 10.1016/j.forsciint.2019.109905] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 06/12/2019] [Accepted: 07/07/2019] [Indexed: 11/25/2022]
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27
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Comte J, Baechler S, Gervaix J, Lock E, Milon MP, Delémont O, Castella V. Touch DNA collection - Performance of four different swabs. Forensic Sci Int Genet 2019; 43:102113. [PMID: 31525724 DOI: 10.1016/j.fsigen.2019.06.014] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 05/18/2019] [Accepted: 06/18/2019] [Indexed: 12/28/2022]
Abstract
A collaborative study conducted by three police forensic units, a DNA laboratory, and a forensic academic institute was undertaken in order to compare the performance of four different swabs in controlled and quasi-operational conditions. For this purpose, a reference swab (Prionics cardboard evidence collection kit) currently used within the police forensic units and 3 challenger swabs (COPAN 4N6FLOQSwabs™ (Genetics variety), Puritan FAB-MINI-AP and Sarstedt Forensic Swab) were used for collecting DNA traces from previously used items (referred as "touch DNA" in this article) including on 60 collars, 60 screwdrivers and 60 steering wheels obtained from volunteers. For each comparison, the surface considered was divided into two equal components; one was sampled with the reference swab and the other with one of the three challenger swabs. This lead to a total of 360 samples. Conclusions were consistent within the four operational partners. From a practical point of view, the COPAN 4N6FLOQSwabs™ (Genetics variety) was judged the most convenient to use. Furthermore, it allowed the recovery of significantly more DNA from collars (0.65 vs 0.13 ng/μL) and steering wheels (2.82 vs 1.77 ng/μL), and a similar amount of DNA from screwdrivers (0.032 vs 0.026 ng/μL) compared with the Prionics reference swab. The two other challenger swabs provided results that were not significantly different from the reference swab, except for the Puritan swab, whose performance was significantly lower for steering wheels (0.37 vs 0.58 ng/μL). As part of a conservation study, 50 μL of a blood dilution (1/4 with PBS) was deposited on a total of 105 COPAN (Genetics and Crime Scene varieties), Prionics and Sarstedt swabs. They were stored within a cupboard at room temperature. The integrity of the recovered DNA was evaluated with NGM SElect™ DNA profiles after different time-spans ranging from 1 day to 12 months by comparing the height difference of the peaks occurring at the shortest and longest loci, respectively. DNA seemed to remain stable, except when using the COPAN 4N6FLOQSwabs™ treated with an antimicrobial agent (Crime scene variety), which resulted in significant DNA degradation. Following these tests, the COPAN 4N6FLOQSwabs™ (Genetics variety), a model with a desiccant, was selected for further testing in fully operational conditions.
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Affiliation(s)
- Jennifer Comte
- Unité de Génétique Forensique, Centre Universitaire Romand de Médecine Légale, Centre Hospitalier Universitaire Vaudois et Université de Lausanne, Ch. de la Vulliette 4, 1000 Lausanne 25, Switzerland
| | - Simon Baechler
- Service forensique, Police neuchâteloise, Rue des Poudrières 14, 2006 Neuchâtel, Switzerland; Ecole des Sciences Criminelles, Université de Lausanne, UNIL-Batochime, 1015 Lausanne, Switzerland; Laboratoire de Recherche en Criminalistique, Université du Québec à Trois-Rivières, 3351 Bd des Forges, Trois-Rivières G8Z 4M3, Canada
| | - Joelle Gervaix
- Unité de Génétique Forensique, Centre Universitaire Romand de Médecine Légale, Centre Hospitalier Universitaire Vaudois et Université de Lausanne, Ch. de la Vulliette 4, 1000 Lausanne 25, Switzerland
| | - Eric Lock
- Departement de la sécurité et de l'économie, Police judiciaire, Section Forensique, Bd Carl-Vogt 17-19, 1205 Genève, Switzerland
| | - Marie-Pierre Milon
- Police de Sûreté, Brigade de police scientifique, Route de la Blécherette 101, 1014 Lausanne, Switzerland
| | - Olivier Delémont
- Ecole des Sciences Criminelles, Université de Lausanne, UNIL-Batochime, 1015 Lausanne, Switzerland
| | - Vincent Castella
- Unité de Génétique Forensique, Centre Universitaire Romand de Médecine Légale, Centre Hospitalier Universitaire Vaudois et Université de Lausanne, Ch. de la Vulliette 4, 1000 Lausanne 25, Switzerland.
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28
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A review of trace “Touch DNA” deposits: Variability factors and an exploration of cellular composition. Forensic Sci Int Genet 2019; 39:8-18. [DOI: 10.1016/j.fsigen.2018.11.019] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 11/14/2018] [Accepted: 11/26/2018] [Indexed: 02/07/2023]
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29
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Falkena K, Hoveling RJ, van Weert A, Lambrechts SA, van Leeuwen TG, Aalders MC, van Dam A. Prediction of DNA concentration in fingermarks using autofluorescence properties. Forensic Sci Int 2019; 295:128-136. [DOI: 10.1016/j.forsciint.2018.12.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 12/03/2018] [Indexed: 01/23/2023]
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30
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van Oorschot RA, Szkuta B, Meakin GE, Kokshoorn B, Goray M. DNA transfer in forensic science: A review. Forensic Sci Int Genet 2019; 38:140-166. [DOI: 10.1016/j.fsigen.2018.10.014] [Citation(s) in RCA: 128] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 10/19/2018] [Accepted: 10/22/2018] [Indexed: 02/07/2023]
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31
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Ibrahim SF. Human skin identification using specific gene marker at different storage temperatures. EGYPTIAN JOURNAL OF FORENSIC SCIENCES 2018. [DOI: 10.1186/s41935-018-0059-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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32
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Shedding light on shedders. Forensic Sci Int Genet 2018; 36:20-25. [DOI: 10.1016/j.fsigen.2018.06.004] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 06/04/2018] [Accepted: 06/05/2018] [Indexed: 11/18/2022]
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33
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Subhani Z, Daniel B, Frascione N. DNA Profiles from Fingerprint Lifts—Enhancing the Evidential Value of Fingermarks Through Successful DNA Typing. J Forensic Sci 2018; 64:201-206. [DOI: 10.1111/1556-4029.13830] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 04/23/2018] [Accepted: 05/08/2018] [Indexed: 11/29/2022]
Affiliation(s)
- Zuhaib Subhani
- Department of AnalyticalEnvironmental and Forensic SciencesSchool of Population Health & Environmental SciencesFaculty of Life Sciences & Medicine, King's College London 150 Stamford Street London SE1 9NH U.K
| | - Barbara Daniel
- Department of AnalyticalEnvironmental and Forensic SciencesSchool of Population Health & Environmental SciencesFaculty of Life Sciences & Medicine, King's College London 150 Stamford Street London SE1 9NH U.K
| | - Nunzianda Frascione
- Department of AnalyticalEnvironmental and Forensic SciencesSchool of Population Health & Environmental SciencesFaculty of Life Sciences & Medicine, King's College London 150 Stamford Street London SE1 9NH U.K
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34
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Cavanaugh SE, Bathrick AS. Direct PCR amplification of forensic touch and other challenging DNA samples: A review. Forensic Sci Int Genet 2018; 32:40-49. [DOI: 10.1016/j.fsigen.2017.10.005] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 10/11/2017] [Accepted: 10/16/2017] [Indexed: 01/08/2023]
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Sharma V, Chow HY, Siegel D, Wurmbach E. Qualitative and quantitative assessment of Illumina's forensic STR and SNP kits on MiSeq FGx™. PLoS One 2017; 12:e0187932. [PMID: 29121662 PMCID: PMC5679668 DOI: 10.1371/journal.pone.0187932] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 10/27/2017] [Indexed: 11/30/2022] Open
Abstract
Massively parallel sequencing (MPS) is a powerful tool transforming DNA analysis in multiple fields ranging from medicine, to environmental science, to evolutionary biology. In forensic applications, MPS offers the ability to significantly increase the discriminatory power of human identification as well as aid in mixture deconvolution. However, before the benefits of any new technology can be employed, a thorough evaluation of its quality, consistency, sensitivity, and specificity must be rigorously evaluated in order to gain a detailed understanding of the technique including sources of error, error rates, and other restrictions/limitations. This extensive study assessed the performance of Illumina’s MiSeq FGx MPS system and ForenSeq™ kit in nine experimental runs including 314 reaction samples. In-depth data analysis evaluated the consequences of different assay conditions on test results. Variables included: sample numbers per run, targets per run, DNA input per sample, and replications. Results are presented as heat maps revealing patterns for each locus. Data analysis focused on read numbers (allele coverage), drop-outs, drop-ins, and sequence analysis. The study revealed that loci with high read numbers performed better and resulted in fewer drop-outs and well balanced heterozygous alleles. Several loci were prone to drop-outs which led to falsely typed homozygotes and therefore to genotype errors. Sequence analysis of allele drop-in typically revealed a single nucleotide change (deletion, insertion, or substitution). Analyses of sequences, no template controls, and spurious alleles suggest no contamination during library preparation, pooling, and sequencing, but indicate that sequencing or PCR errors may have occurred due to DNA polymerase infidelities. Finally, we found utilizing Illumina’s FGx System at recommended conditions does not guarantee 100% outcomes for all samples tested, including the positive control, and required manual editing due to low read numbers and/or allele drop-in. These findings are important for progressing towards implementation of MPS in forensic DNA testing.
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Affiliation(s)
- Vishakha Sharma
- Department of Forensic Biology, Office of Chief Medical Examiner, New York, NY, United States of America
| | - Hoi Yan Chow
- Department of Forensic Biology, Office of Chief Medical Examiner, New York, NY, United States of America
| | - Donald Siegel
- Department of Forensic Biology, Office of Chief Medical Examiner, New York, NY, United States of America
| | - Elisa Wurmbach
- Department of Forensic Biology, Office of Chief Medical Examiner, New York, NY, United States of America
- * E-mail:
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36
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Templeton JE, Taylor D, Handt O, Linacre A. Typing DNA profiles from previously enhanced fingerprints using direct PCR. Forensic Sci Int Genet 2017; 29:276-282. [DOI: 10.1016/j.fsigen.2017.05.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 03/27/2017] [Accepted: 05/19/2017] [Indexed: 01/13/2023]
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37
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Wang C, Stanciu CE, Ehrhardt CJ, Yadavalli VK. Nanoscale characterization of forensically relevant epithelial cells and surface associated extracellular DNA. Forensic Sci Int 2017; 277:252-258. [PMID: 28672218 DOI: 10.1016/j.forsciint.2017.06.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 05/18/2017] [Accepted: 06/18/2017] [Indexed: 01/03/2023]
Abstract
Atomic force microscopy provides a novel morphological and physico-chemical perspective to analyze epithelial cell samples in forensic investigations. As a nanoscale, single cell tool, it allows the investigation of scarce samples in a non-destructive fashion. Using chemical force spectroscopy, it permits the identification of specific functional groups or surface molecules. Of specific interest is the presence of extracellular DNA (eDNA) on the surface of epithelial cells that line the exterior skin and interior cavities of human bodies, and can transfer onto surfaces through contact with skin and saliva. To date, this eDNA has only been measured a bulk level. Here, using nanoscale imaging, we first describe the unique differences between keratinized epithelial cells and non-keratinized buccal cells. Then via a force mapping technique, we show how eDNA can be spatially located and quantified on the cell surface. Our results suggest that presence and relative quantity of surface-associated, extracellular DNA signatures can be analyzed on individual epithelial cells from different tissue sources, providing a new tool in the forensic analysis of touch samples.
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Affiliation(s)
- Congzhou Wang
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Cristina E Stanciu
- Department of Forensic Science, Virginia Commonwealth University, Richmond, VA, USA
| | | | - Vamsi K Yadavalli
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, VA, USA.
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38
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Brunelle E, Le AM, Huynh C, Wingfield K, Halámková L, Agudelo J, Halámek J. Coomassie Brilliant Blue G-250 Dye: An Application for Forensic Fingerprint Analysis. Anal Chem 2017; 89:4314-4319. [DOI: 10.1021/acs.analchem.7b00510] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Erica Brunelle
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, United States
| | - Anh Minh Le
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, United States
| | - Crystal Huynh
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, United States
| | - Kelly Wingfield
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, United States
| | - Lenka Halámková
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, United States
| | - Juliana Agudelo
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, United States
| | - Jan Halámek
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, United States
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39
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Albujja MH, Bin Dukhyil AA, Chaudhary AR, Kassab AC, Refaat AM, Babu SR, Okla MK, Kumar S. Evaluation of Skin Surface as an Alternative Source of Reference DNA Samples: A Pilot Study. J Forensic Sci 2017; 63:227-233. [DOI: 10.1111/1556-4029.13468] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 01/11/2017] [Accepted: 01/16/2017] [Indexed: 11/27/2022]
Affiliation(s)
- Mohammed H. Albujja
- College of Forensic Sciences; Naif Arab University for Security Sciences; P.O. Box: 6830 Riyadh 11452 Saudi Arabia
| | - Abdul Aziz Bin Dukhyil
- College of Applied Medical Sciences; Majmaah University; P.O. Box: 1816 Majmaah 11952 Saudi Arabia
| | - Abdul Rauf Chaudhary
- College of Forensic Sciences; Naif Arab University for Security Sciences; P.O. Box: 6830 Riyadh 11452 Saudi Arabia
| | - Ahmed Ch. Kassab
- College of Forensic Sciences; Naif Arab University for Security Sciences; P.O. Box: 6830 Riyadh 11452 Saudi Arabia
| | - Ahmed M. Refaat
- College of Forensic Sciences; Naif Arab University for Security Sciences; P.O. Box: 6830 Riyadh 11452 Saudi Arabia
| | - Saranya Ramesh Babu
- College of Forensic Sciences; Naif Arab University for Security Sciences; P.O. Box: 6830 Riyadh 11452 Saudi Arabia
| | - Mohammad K. Okla
- College of Science; King Saud University; P.O. Box: 2455 Riyadh 11451 Saudi Arabia
| | - Sachil Kumar
- College of Forensic Sciences; Naif Arab University for Security Sciences; P.O. Box: 6830 Riyadh 11452 Saudi Arabia
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40
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Persistence of touch DNA on burglary-related tools. Int J Legal Med 2017; 131:941-953. [DOI: 10.1007/s00414-017-1551-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 01/27/2017] [Indexed: 11/26/2022]
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41
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Ostojic L, Wurmbach E. Analysis of fingerprint samples, testing various conditions, for forensic DNA identification. Sci Justice 2017; 57:35-40. [DOI: 10.1016/j.scijus.2016.08.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 08/25/2016] [Accepted: 08/30/2016] [Indexed: 01/28/2023]
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42
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Fieldhouse S, Oravcova E, Walton-Williams L. The effect of DNA recovery on the subsequent quality of latent fingermarks. Forensic Sci Int 2016; 267:78-88. [DOI: 10.1016/j.forsciint.2016.08.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 07/14/2016] [Accepted: 08/02/2016] [Indexed: 10/21/2022]
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43
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Goray M, Ballantyne KN, Szkuta B, van Oorschot RA. Cale CM, Earll ME, Latham KE, Bush GL. Could Secondary DNA Transfer Falsely Place Someone at the Scene of a Crime? J Forensic Sci 2016;61(1):196-203. J Forensic Sci 2016; 61:1396-8. [DOI: 10.1111/1556-4029.13156] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mariya Goray
- Victoria Police Forensic Services Department; 31 Forensic Drive Macleod Vic. 3085 Australia
| | - Kaye N. Ballantyne
- Office of the Chief Forensic Scientist; Victoria Police Forensic Services Department; 31 Forensic Drive Macleod Vic. 3085 Australia
- School of Psychology and Public Health; La Trobe University; Bundoora Vic. 3086 Australia
| | - Bianca Szkuta
- Office of the Chief Forensic Scientist; Victoria Police Forensic Services Department; 31 Forensic Drive Macleod Vic. 3085 Australia
- Centre for Chemistry and Biotechnology; School of Life and Environmental Sciences; Deakin University; Locked Bag 20000 Geelong Vic. 3220 Australia
| | - Roland A.H. van Oorschot
- Office of the Chief Forensic Scientist; Victoria Police Forensic Services Department; 31 Forensic Drive Macleod Vic. 3085 Australia
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44
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Affiliation(s)
- Cynthia M. Cale
- Human Biology Program; University of Indianapolis; 1400 East Hanna Avenue Indianapolis IN 46227
- Strand Analytical Laboratories; 5770 Decatur Blvd Indianapolis IN 46241
| | - Krista E. Latham
- Human Biology Program; University of Indianapolis; 1400 East Hanna Avenue Indianapolis IN 46227
| | - Gay L. Bush
- Strand Analytical Laboratories; 5770 Decatur Blvd Indianapolis IN 46241
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45
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Oldoni F, Castella V, Hall D. Shedding light on the relative DNA contribution of two persons handling the same object. Forensic Sci Int Genet 2016; 24:148-157. [DOI: 10.1016/j.fsigen.2016.07.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 06/11/2016] [Accepted: 07/05/2016] [Indexed: 10/21/2022]
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46
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Analyse von Hautkontaktspuren in der forensischen Genetik unter besonderer Berücksichtigung ihrer Entstehung und Spurenentnahme. Rechtsmedizin (Berl) 2016. [DOI: 10.1007/s00194-016-0110-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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47
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Analyse von Hautkontaktspuren in der forensischen Genetik unter besonderer Berücksichtigung von Kontamination und Transferszenarien. Rechtsmedizin (Berl) 2016. [DOI: 10.1007/s00194-016-0115-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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48
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Goray M, Fowler S, Szkuta B, van Oorschot R. Shedder status—An analysis of self and non-self DNA in multiple handprints deposited by the same individuals over time. Forensic Sci Int Genet 2016; 23:190-196. [DOI: 10.1016/j.fsigen.2016.05.005] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 04/14/2016] [Accepted: 05/09/2016] [Indexed: 01/25/2023]
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49
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van Dam A, van Beek FT, Aalders MC, van Leeuwen TG, Lambrechts SA. Techniques that acquire donor profiling information from fingermarks — A review. Sci Justice 2016; 56:143-54. [DOI: 10.1016/j.scijus.2015.12.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 11/30/2015] [Accepted: 12/12/2015] [Indexed: 10/22/2022]
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50
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Brunelle E, Huynh C, Le AM, Halámková L, Agudelo J, Halámek J. New Horizons for Ninhydrin: Colorimetric Determination of Gender from Fingerprints. Anal Chem 2016; 88:2413-20. [DOI: 10.1021/acs.analchem.5b04473] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Erica Brunelle
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, United States
| | - Crystal Huynh
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, United States
| | - Anh Minh Le
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, United States
| | - Lenka Halámková
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, United States
| | - Juliana Agudelo
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, United States
| | - Jan Halámek
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, United States
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