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Almohammed EK, Hadi A, Al-Asmakh M, Lazim H. The Qatari population's genetic structure and gene flow as revealed by the Y chromosome. PLoS One 2023; 18:e0290844. [PMID: 37656680 PMCID: PMC10473524 DOI: 10.1371/journal.pone.0290844] [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: 05/16/2023] [Accepted: 08/16/2023] [Indexed: 09/03/2023] Open
Abstract
The Y-chromosome has been widely used in forensic genetic applications and human population genetic studies due to its uniparental origins. A large database on the Qatari population was created for comparison with other databases from the Arabian Peninsula, the Middle East, and Africa. We provide a study of 23 Y-STR loci included in PowerPlex Y23 (Promega, USA) that were genotyped to produce haplotypes in 379 unrelated males from Qatar, a country at the crossroads of migration patterns. Overall, the most polymorphic locus provided by the Promega kit was DYS458, with a genetic diversity value of 0.85 and a haplotype diversity of 0.998924. Athey's Haplogroup Predictor tool was used to predict haplogroups from Y-STR haplotypes in the Qatari population. In a median-joining network, the haplogroup J1 predominance (49%) in Qatar generated a star-like expansion cluster. The graph of population Q-matrix was developed using Y-STR data from 38 Middle Eastern and 97 African populations (11,305 individuals), and it demonstrated a stronger sub-grouping of countries within each ethnic group and showed the effect of Arabs on the indigenous Berbers of North Africa. The estimated migration rate between the Qatari and other Arabian populations was inferred using Bayesian coalescence theory in the Migrate-n program. According to the Gene Flow study, the main migration route was from Yemen to Kuwait through Qatar. Our research, using the PowerPlex Y23 database, shows the importance of gene diversity, as well as regional and social structuring, in determining the utility of demographic and forensic databases.
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Affiliation(s)
- Eida Khalaf Almohammed
- Ministry of Interior of Qatar, Doha, Qatar
- Department of Biomedical Sciences, College of Health Sciences, QU Health, Qatar University, Doha, Qatar
| | - Abdullah Hadi
- University of Central Lancashire Medical School, Preston, United Kingdom
| | - Maha Al-Asmakh
- Department of Biomedical Sciences, College of Health Sciences, QU Health, Qatar University, Doha, Qatar
| | - Hayder Lazim
- School of Medicine, Faculty of Health, Social Care and Medicine (FHSCM), Edge Hill University, Ormskirk, United Kingdom
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Thompson JM. Amplification of Extracted DNA and Direct Amplification with the PowerPlex ® Y23 System. Methods Mol Biol 2023; 2685:227-239. [PMID: 37439985 DOI: 10.1007/978-1-0716-3295-6_14] [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] [Indexed: 07/14/2023]
Abstract
The PowerPlex® Y23 System offered by Promega Corporation contains 23 Y-STR loci (DYS19, DYS385a/b, DYS389I/II, DYS390, DYS391, DYS392, DYS393, DYS437, DYS438, DYS439, DYS448, DYS456, DYS458, DYS481, DYS533, DYS549, DYS570, DYS576, DYS635, DYS643, and Y-GATA-H4). The PowerPlex® Y23 System is designed to amplify DNA from purified extracts as well as direct amplification from substrates used to collect database samples (e.g., swabs and storage cards). Protocols are provided for full-volume reactions for DNA extracts, as well as half-volume reactions for direct amplifications from different substrates.
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Development and validation of a new multiplex for upgrading Y-STRs population databases from 12 to 23 markers and its forensic casework application. Sci Rep 2022; 12:21734. [PMID: 36526709 PMCID: PMC9758231 DOI: 10.1038/s41598-022-25785-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 12/05/2022] [Indexed: 12/23/2022] Open
Abstract
Y chromosomal short tandem repeats (Y-STRs) are used in forensic investigations as a useful complementary tool to autosomal markers. The ongoing development of new kits with an increasing number of markers makes it necessary to update populations typed in the Y-STR Haplotype Reference Database to reach at least 23 Y-STRs. A novel Y-STR multiplex panel was developed to offer a cost-efficient alternative to update Y-STR haplotypes from 12 to 23 loci. This panel includes the eleven markers, DYS448, DYS456, DYS458, DYS635, Y-GATA H4, DYS576, DYS481, DYS549, DYS533, DYS570 and DYS643, as well as DYS385a/b for traceability purpose. Developmental validation of this panel was conducted following the recommendations of the Scientific Working Group on DNA Analysis Methods (SWGDAM), showing high sensitivity, tolerance to common inhibitors as well as high species specificity. It was efficient for degraded DNA samples and for detection of male mixtures. When applying it for extending the current data of the Ibiza population, both the discrimination capacity and the haplotype diversity increased from 0.5952 to 0.9048 and from 0.9808 to 0.9977, respectively. Together, the study demonstrates the suitability of this panel in forensic casework.
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Ikram MS, Mehmood T, Rakha A, Akhtar S, Khan MIM, Al-Qahtani WS, Safhi FA, Hadi S, Wang CC, Adnan A. Genetic diversity and forensic application of Y-filer STRs in four major ethnic groups of Pakistan. BMC Genomics 2022; 23:788. [PMID: 36451116 PMCID: PMC9714238 DOI: 10.1186/s12864-022-09028-z] [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: 06/12/2022] [Accepted: 09/14/2022] [Indexed: 12/05/2022] Open
Abstract
17 Y-chromosomal STRs which are part of the Yfiler Amplification Kit were investigated in 493 unrelated Pakistani individuals belonging to the Punjabi, Sindhi, Baloch, and Pathan ethnic groups. We have assessed the forensic parameters and population genetic structure for each group. Among the 493 unrelated individuals from four ethnic groups (128 Baloch, 122 Pathan, 108 Punjabi, and 135 Sindhi), 82 haplotypes were observed with haplotype diversity (HD) of 0.9906 in Baloch, 102 haplotypes with HD value of 0.9957 in Pathans, 80 haplotypes with HD value of 0.9924 in Punjabi, and 105 haplotypes with HD value of 0.9945 in the Sindhi population. The overall gene diversity for Baloch, Pathan, Punjabi, and Sindhi populations was 0.6367, 0.6479, 0.6657, and 0.6112, respectively. The results had shown us that Pakistani populations do not have a unique set of genes but share the genetic affinity with regional (Central Asia and Northern India) populations. The observed low gene diversity (heterozygosity) values may be because of endogamy trends and this observation is equally supported by the results of forensic parameters which are mostly static across 4 combinations (minimal STRs, extended 11 Y-STRs, Powerplex 12 Y System, and Yfiler 17 Y-STRs) of STRs in these four populations.
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Affiliation(s)
- Muhammad Salman Ikram
- grid.12955.3a0000 0001 2264 7233Department of Anthropology and Ethnology, Institute of Anthropology, School of Sociology and Anthropology, Xiamen University, Xiamen, China ,grid.412782.a0000 0004 0609 4693Institute of Chemistry, University of Sargodha, Sargodha, 40100 Punjab Pakistan
| | - Tahir Mehmood
- grid.412782.a0000 0004 0609 4693Institute of Chemistry, University of Sargodha, Sargodha, 40100 Punjab Pakistan ,grid.11173.350000 0001 0670 519XCentre for Applied and Molecular Biology (CAMB), University of the Punjab, Lahore, 53700 Punjab Pakistan
| | - Allah Rakha
- grid.412956.d0000 0004 0609 0537Department of Forensic Sciences, University of Health Sciences, Lahore, 54600 Pakistan
| | - Sareen Akhtar
- grid.412956.d0000 0004 0609 0537Department of Forensic Sciences, University of Health Sciences, Lahore, 54600 Pakistan
| | | | - Wedad Saeed Al-Qahtani
- grid.472319.a0000 0001 0708 9739Department of Forensic Sciences, College of Criminal Justice, Naïf Arab University of Security Sciences, Riyadh, 11452 Kingdom of Saudi Arabia
| | - Fatmah Ahmed Safhi
- grid.449346.80000 0004 0501 7602Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671 Saudi Arabia
| | - Sibte Hadi
- grid.472319.a0000 0001 0708 9739Department of Forensic Sciences, College of Criminal Justice, Naïf Arab University of Security Sciences, Riyadh, 11452 Kingdom of Saudi Arabia
| | - Chuan-Chao Wang
- grid.12955.3a0000 0001 2264 7233Department of Anthropology and Ethnology, Institute of Anthropology, School of Sociology and Anthropology, Xiamen University, Xiamen, China
| | - Atif Adnan
- grid.12955.3a0000 0001 2264 7233Department of Anthropology and Ethnology, Institute of Anthropology, School of Sociology and Anthropology, Xiamen University, Xiamen, China ,grid.472319.a0000 0001 0708 9739Department of Forensic Sciences, College of Criminal Justice, Naïf Arab University of Security Sciences, Riyadh, 11452 Kingdom of Saudi Arabia
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He G, Adnan A, Al-Qahtani WS, Safhi FA, Yeh HY, Hadi S, Wang CC, Wang M, Liu C, Yao J. Genetic admixture history and forensic characteristics of Tibeto-Burman-speaking Qiang people explored via the newly developed Y-STR panel and genome-wide SNP data. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.939659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Fine-scale patterns of population genetic structure and diversity of ethnolinguistically diverse populations are important for biogeographical ancestry inference, kinship testing, and development and validation of new kits focused on forensic personal identification. Analyses focused on forensic markers and genome-wide single nucleotide polymorphism (SNP) data can provide new insights into the origin, admixture processes, and forensic characteristics of targeted populations. Qiang people had a large sample size among Tibeto-Burmanspeaking populations, which widely resided in the middle latitude of the Tibetan Plateau. However, their genetic structure and forensic features have remained uncharacterized because of the paucity of comprehensive genetic analyses. Here, we first developed and validated the forensic performance of the AGCU-Y30 Y-short tandem repeats (STR) panel, which contains slowly and moderately mutating Y-STRs, and then we conducted comprehensive population genetic analyses based on Y-STRs and genome-wide SNPs to explore the admixture history of Qiang people and their neighbors. The validated results of this panel showed that the new Y-STR kit was sensitive and robust enough for forensic applications. Haplotype diversity (HD) ranging from 0.9932 to 0.9996 and allelic frequencies ranging from 0.001946 to 0.8326 in 514 Qiang people demonstrated that all included markers were highly polymorphic in Tibeto-Burman people. Population genetic analyses based on Y-STRs [RST, FST, multidimensional scaling (MDS) analysis, neighboring-joining (NJ) tree, principal component analysis (PCA), and median-joining network (MJN)] revealed that the Qiang people harbored a paternally close relationship with lowland Tibetan-Yi corridor populations. Furthermore, we conducted a comprehensive population admixture analysis among modern and ancient Eurasian populations based on genome-wide shared SNPs. We found that the Qiang people were a genetically admixed population and showed closest relationship with Tibetan and Neolithic Yellow River farmers. Admixture modeling showed that Qiang people shared the primary ancestry related to Tibetan, supporting the hypothesis of common origin between Tibetan and Qiang people from North China.
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Mutation analysis for newly suggested 30 Y-STR loci with high mutation rates in Chinese father-son pairs. Sci Rep 2022; 12:15680. [PMID: 36127390 PMCID: PMC9489694 DOI: 10.1038/s41598-022-20014-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 09/07/2022] [Indexed: 11/08/2022] Open
Abstract
Rapidly mutating Y-STRs (RM Y-STRs) harbor great potential to distinguish male relatives and achieve male identification. However, forensic applications were greatly limited by the small number of the initially identified 14 RM Y-STRs. Recently, with the emergence of 12 novel RM Y-STRs, an integrated panel named RMplex was introduced, which contains all 26 RM Y-STRs and four fast mutating Y-STRs (FM Y-STRs). To obtain the first data on the mutation rates and father-son differentiation rates of the 30 newly proposed Y-STRs in Chinese populations, we performed an empirical mutation study on 307 DNA-confirmed Chinese paternal pairs. Previously reported mutation rates for 14 RM Y-STRs in Chinese and European populations were pooled and merged with our data. The highest meiosis number for the two groups reached 4771 and 2687, respectively. Five loci showed significant differences between the populations (DYS570, DYS399S1, DYS547, DYS612, and DYF403S1b). For the new panel covering 30 Y-STR loci, our results show extensive differences in the mutation rates between the two populations, as well. 10 RM Y-STR loci showed relatively low mutation rates (10-3-10-2 per meiosis) and 2 FM Y-STR loci had rapid mutation rates (> 10-2 per meiosis) in the Chinese population. Several-fold differences in mutation rates were found in nine Y-STR loci between the Chinese and reference populations, with two loci having significantly higher mutation rates and one locus with a significantly lower mutation rate in the Chinese population (P < 0.05). Eighteen RM Y-STRs (> 10-2 per meiosis), 8 FM Y-STR loci (5×10-3-10-2 per meiosis), 3 moderately mutating Y-STRs (MM Y-STRs, 10-3-5×10-3 per meiosis), and one locus with no observed mutation events were identified in the Chinese population. 40.06% of the Chinese paternity pairs were discriminated with RMplex while only 20.84% with the initial 14 RM Y-STRs, indicating that RMplex is beneficial for distinguishing paternally related males. Future studies on populations of different genetic backgrounds are necessary to obtain comprehensive estimates of mutation rates at these new loci.
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Nazir S, Adnan A, Rehman RA, Al-Qahtani WS, Alsaleh AB, Al-Harthi HS, Safhi FA, Almheiri R, Lootah R, Alreyami A, Almarri I, Wang CC, Rakha A, Hadi S. Mutation Rate Analysis of RM Y-STRs in Deep-Rooted Multi-Generational Punjabi Pedigrees from Pakistan. Genes (Basel) 2022; 13:genes13081403. [PMID: 36011314 PMCID: PMC9407599 DOI: 10.3390/genes13081403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 08/03/2022] [Indexed: 11/30/2022] Open
Abstract
Y chromosome short tandem repeat polymorphisms (Y-STRs) are important in many areas of human genetics. Y chromosomal STRs, being normally utilized in the field of forensics, exhibit low haplotype diversity in consanguineous populations and fail to discriminate among male relatives from the same pedigree. Rapidly mutating Y-STRs (RM Y-STRs) have received much attention in the past decade. These 13 RM Y-STRs have high mutation rates (>10−2) and have considerably higher haplotype diversity and discrimination capacity than conventionally used Y-STRs, showing remarkable power when it comes to differentiation in paternal lineages in endogamous populations. Previously, we analyzed two to four generations of 99 pedigrees with 1568 pairs of men covering one to six meioses from all over Pakistan and 216 male relatives from 18 deep-rooted endogamous Sindhi pedigrees covering one to seven meioses. Here, we present 861 pairs of men from 62 endogamous pedigrees covering one to six meioses from the Punjabi population of Punjab, Pakistan. Mutations were frequently observed at DYF399 and DYF403, while no mutation was observed at DYS526a/b. The rate of differentiation ranged from 29.70% (first meiosis) to 80.95% (fifth meiosis), while overall (first to sixth meiosis) differentiation was 59.46%. Combining previously published data with newly generated data, the overall differentiation rate was 38.79% based on 5176 pairs of men related by 1−20 meioses, while Yfiler differentiation was 9.24% based on 3864 pairs. Using father−son pair data from the present and previous studies, we also provide updated RM Y-STR mutation rates.
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Affiliation(s)
- Shahid Nazir
- Department of Forensic Sciences, University of Health Sciences, Lahore 54600, Pakistan
| | - Atif Adnan
- Department of Anthropology and Ethnology, Institute of Anthropology, School of Sociology and Anthropology, Xiamen University, Xiamen 361005, China
- Department of Forensic Sciences, College of Criminal Justice, Naïf Arab University of Security Sciences, Riyadh 11452, Saudi Arabia
- Correspondence: (A.A.); (C.-C.W.); (A.R.); (S.H.)
| | - Rahat Abdul Rehman
- Department of Forensic Sciences, University of Health Sciences, Lahore 54600, Pakistan
| | - Wedad Saeed Al-Qahtani
- Department of Forensic Sciences, College of Criminal Justice, Naïf Arab University of Security Sciences, Riyadh 11452, Saudi Arabia
| | - Abrar B. Alsaleh
- Department of Forensic Sciences, College of Criminal Justice, Naïf Arab University of Security Sciences, Riyadh 11452, Saudi Arabia
| | - Hussam S. Al-Harthi
- Prince Sultan Military Medical City, Makkah Al Mukarramah Road, Al-Sulimaniyah, Riyadh 12233, Saudi Arabia
| | - Fatmah Ahmed Safhi
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Reem Almheiri
- General Department of Forensic Sciences and Criminology, Dubai Police General Headquarters, Dubai 1493, United Arab Emirates
| | - Reem Lootah
- General Department of Forensic Sciences and Criminology, Dubai Police General Headquarters, Dubai 1493, United Arab Emirates
| | - Afra Alreyami
- General Department of Forensic Sciences and Criminology, Dubai Police General Headquarters, Dubai 1493, United Arab Emirates
| | - Imran Almarri
- General Department of Forensic Sciences and Criminology, Dubai Police General Headquarters, Dubai 1493, United Arab Emirates
| | - Chuan-Chao Wang
- Department of Anthropology and Ethnology, Institute of Anthropology, School of Sociology and Anthropology, Xiamen University, Xiamen 361005, China
- Correspondence: (A.A.); (C.-C.W.); (A.R.); (S.H.)
| | - Allah Rakha
- Department of Forensic Sciences, University of Health Sciences, Lahore 54600, Pakistan
- Correspondence: (A.A.); (C.-C.W.); (A.R.); (S.H.)
| | - Sibte Hadi
- Department of Forensic Sciences, College of Criminal Justice, Naïf Arab University of Security Sciences, Riyadh 11452, Saudi Arabia
- Correspondence: (A.A.); (C.-C.W.); (A.R.); (S.H.)
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Huffman K, Hanson E, Ballantyne J. Cell Subsampling Recovers Probative DNA Profile Information from Unresolvable/Undetectable Minor Donors in Mixtures. Genes (Basel) 2022; 13:genes13071117. [PMID: 35885899 PMCID: PMC9321018 DOI: 10.3390/genes13071117] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/13/2022] [Accepted: 06/20/2022] [Indexed: 02/04/2023] Open
Abstract
When a minor DNA component to a binary mixture is present at a weight ratio of approximately 1:50 or less, the presence of this minor donor is undetectable (or barely detectable) by standard mixture deconvolution approaches. In an attempt to retrieve probative minor donor DNA profile information, multiple quintuple cell subsamples were collected from a 1:50 DNA mixture using direct single cell subsampling (DSCS) paired with probabilistic genotyping (PG), the latter validated for use with single or few cells. DSCS employs a simplified micromanipulation technique paired with an enhanced DNA profiling approach, involving direct cell lysis and a sensitive PCR process, to genotype individual cells. Multiple five-cell subsamples were used to interrogate sufficient cells from the mixture such that some of the created 5-cell “mini-mixture” subsamples contained a cell from the minor donor. The latter mini-mixture subsamples, which now comprised weight ratios of 1:4 as opposed to the bulk mixture 1:50, were analyzed with the PG systems STRmixTM and EuroForMix resulting in a significant probative gain of information, (LR ≅ 1011, compared to standard bulk mixture PG methods, LR ≅ 101–102).
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Affiliation(s)
- Kaitlin Huffman
- Graduate Program in Chemistry, Department of Chemistry, University of Central Florida, P.O. Box 162366, Orlando, FL 32816-2366, USA; (K.H.); (E.H.)
| | - Erin Hanson
- Graduate Program in Chemistry, Department of Chemistry, University of Central Florida, P.O. Box 162366, Orlando, FL 32816-2366, USA; (K.H.); (E.H.)
- National Center for Forensic Science, P.O. Box 162367, Orlando, FL 32816-2367, USA
| | - Jack Ballantyne
- Graduate Program in Chemistry, Department of Chemistry, University of Central Florida, P.O. Box 162366, Orlando, FL 32816-2366, USA; (K.H.); (E.H.)
- National Center for Forensic Science, P.O. Box 162367, Orlando, FL 32816-2367, USA
- Correspondence:
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de Knijff P. On the Forensic Use of Y-Chromosome Polymorphisms. Genes (Basel) 2022; 13:genes13050898. [PMID: 35627283 PMCID: PMC9141910 DOI: 10.3390/genes13050898] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/09/2022] [Accepted: 05/13/2022] [Indexed: 12/26/2022] Open
Abstract
Nowadays, the use of Y-chromosome polymorphisms forms an essential part of many forensic DNA investigations. However, this was not always the case. Only since 1992 have we seen that some forensic scientists started to have an interest in this chromosome. In this review, I will sketch a brief history focusing on the forensic use of Y-chromosome polymorphisms. Before describing the various applications of short-tandem repeats (STRs) and single nucleotide polymorphisms (SNPs) on the Y-chromosome, I will discuss a few often ignored aspects influencing proper use and interpretation of Y-chromosome information: (i) genotyping Y-SNPs and Y-STRs, (ii) Y-STR haplotypes shared identical by state (IBS) or identical by descent (IBD), and (iii) Y-haplotype database frequencies.
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Affiliation(s)
- Peter de Knijff
- Department of Human Genetics, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands
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Panda M, Kumawat R, Dixit S, Sharma AN, Shankar H, Chaubey G, Shrivastava P. Forensic features and phylogenetic analyses of the population of Nayagarh (Odisha), India using 23 Y-STRs. Ann Hum Biol 2022; 49:54-68. [PMID: 35499241 DOI: 10.1080/03014460.2022.2039762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
AIM The present study was designed to explore the STR diversity and genomic history of the inhabitants of Nayagarh district of Odisha, India. We also tested the proficiency of the most recent, new generation PowerPlexR Y23 multiplex system for forensic characterisation and to decipher the phylogenetic affinities. SUBJECTS AND METHODS The genetic diversity and polymorphism among 236 healthy unrelated male volunteers from Nayagarh district of Odisha, India was investigated. This investigation was carried out via 23 Y-chromosomal STRs using capillary electrophoresis. RESULT A total 223 unique haplotypes were reported. Discrimination capacity (DC), gene diversity (GD) and power of discrimination (PD) were observed as 0.945, 0.999999999998333, and 0.99999999999794, respectively. Polymorphic information content (PIC) and matching probability (PM) were reported as 0.999999999925535 and 2.06 × 10-12, respectively. Simultaneously, the haplogroup analysis characterised with C2, E1b1a, E1b1b, G2a, H1, I2a, J2a, J2b, L, O, O1, O2, Q, R1a, R2, and T haplogroups, disclosing the possible geographical relatedness of the studied population to different areas of the world. CONCLUSION Phylogenetic analysis with previously reported Indian and Asian populations showed the genetic closeness of the studied population to different Indian populations and the Bangladeshi population of Dhaka, whereas the Bhotra population of Odisha and Han population of China showed much less genetic affinity.
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Affiliation(s)
- Muktikanta Panda
- Department of Home (Police), DNA Fingerprinting Unit, State Forensic Science Laboratory, Government of MP, Sagar, India.,Department of Anthropology, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, Madhya Pradesh, India
| | - Ramkishan Kumawat
- DNA Division, State Forensic Science Laboratory, Jaipur, Rajasthan, India
| | - Shivani Dixit
- Department of Home (Police), DNA Fingerprinting Unit, State Forensic Science Laboratory, Government of MP, Sagar, India
| | - Awdhesh Narayan Sharma
- Department of Anthropology, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, Madhya Pradesh, India
| | - Hari Shankar
- Department of Home (Police), DNA Fingerprinting Unit, State Forensic Science Laboratory, Government of MP, Sagar, India
| | - Gyaneshwer Chaubey
- Department of Zoology, Cytogenetics Laboratory, Banaras Hindu University, Varanasi, India
| | - Pankaj Shrivastava
- Department of Home (Police), DNA Fingerprinting Unit, State Forensic Science Laboratory, Government of MP, Sagar, India.,Department of Anthropology, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, Madhya Pradesh, India
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Wei X, Song F, Wang X, Wang S, Jiang L, Zhang K, Zhou Y, Wang Z, Liao M, Zha L, Luo H. Validation of the AGCU Expressmarker 20 + 20Y Kit: A 6-dye multiplex assay for forensic application. Forensic Sci Int 2022; 336:111342. [DOI: 10.1016/j.forsciint.2022.111342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 04/15/2022] [Accepted: 05/07/2022] [Indexed: 11/04/2022]
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12
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Zho Z, Zhou Y, Li Z, Yao Y, Yang Q, Qian J, Shao C, Qian X, Sun K, Tang Q, Xie J. Identification and assessment of a subset of Y-SNPs with recurrent mutation for forensic purpose. Forensic Sci Int 2022; 334:111270. [DOI: 10.1016/j.forsciint.2022.111270] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 01/18/2022] [Accepted: 03/09/2022] [Indexed: 11/26/2022]
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Li XN, Adnan A, Hadi S, Al-Qahtani WS, Alwaili MA, Alshaya DS, Jalal AS, Amer SAM, Jin F. Genetic characterization of the highlander Tibetan population from Qinghai-Tibet Plateau revealed by X chromosomal STRs. PLoS One 2022; 17:e0271769. [PMID: 35926061 PMCID: PMC9352086 DOI: 10.1371/journal.pone.0271769] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 05/17/2022] [Indexed: 01/20/2023] Open
Abstract
Tibetans are considered an East Asian ethnic group and primarily live in the high Tibetan plateau, the western Sichuan and Yunnan mountains of central and southern China, and areas throughout the Himalayas and around the Tibetan plateau. These people exhibit rare molecular machinery that allows them to adapt to hypoxic environments in the Qinghai-Tibet Plateau and make them a potential candidate for providing insights related to medical genetic, molecular medicine and human population studies. In the current study, we have genotyped 549 individuals with Investigator Argus X-12 Kit. For 12 X-STRs, a total of 174 unique alleles were found, among them DXS10134 and DXS10135 were the most polymorphic loci. All of the loci were in Hardy-Weinberg Equilibrium (HWE). The numbers of observed haplotypes in Highlander Tibetans males were 161,112, 96 and 108, respectively, whereas haplotype diversities (HD) were 0.9959, 0.9880, 0.9809 and 0.9873, respectively. The combined discrimination power for males (PDm) was 0.999 999 99701 and for females (PDf) was 0.999 999 999 999 9958. This study represents an extensive report on X chromosomal STR markers variation in the Highlander Tibetans population for forensic applications and population genetic studies.
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Affiliation(s)
- Xiao-na Li
- School of Fundamental Sciences, China Medical University, Shenyang, Liaoning, P.R. China
| | - Atif Adnan
- Department of Forensic Sciences, College of Criminal Justice, Naif Universsity of Security Sciences, Riyadh, Kingdom of Saudi Arabia
- * E-mail: (FJ); (AA)
| | - Sibte Hadi
- Department of Forensic Sciences, College of Criminal Justice, Naif Universsity of Security Sciences, Riyadh, Kingdom of Saudi Arabia
| | - Wedad Saeed Al-Qahtani
- Department of Forensic Sciences, College of Criminal Justice, Naif Universsity of Security Sciences, Riyadh, Kingdom of Saudi Arabia
| | - Maha Abdullah Alwaili
- Department of Biology, Collage of Sciences, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Dalal S. Alshaya
- Department of Biology, Collage of Sciences, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Areej S. Jalal
- Department of Biology, Collage of Sciences, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Sayed A. M. Amer
- Department of Forensic Sciences, College of Criminal Justice, Naif Universsity of Security Sciences, Riyadh, Kingdom of Saudi Arabia
| | - Feng Jin
- Department of Breast Surgery, The First Hospital of China Medical University, Shenyang, Liaoning, P.R. China
- * E-mail: (FJ); (AA)
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14
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Fan H, Zeng Y, Wu W, Liu H, Xu Q, Du W, Hao H, Liu C, Ren W, Wu W, Chen L, Liu C. The Y-STR landscape of coastal southeastern Han: Forensic characteristics, haplotype analyses, mutation rates, and population genetics. Electrophoresis 2021; 42:1578-1593. [PMID: 34018209 DOI: 10.1002/elps.202100037] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 04/16/2021] [Accepted: 05/15/2021] [Indexed: 11/09/2022]
Abstract
The Y-STR landscape of Coastal Southeastern Han (CSEH) living in Chinese southeast areas (including Guangdong, Fujian, and Zhejiang provinces) is still unclear. We investigated 62 Y-STR markers in a reasonably large number of 1021 unrelated males and 1027 DNA-confirmed father-son pairs to broaden the genetic backgrounds of CSEH. In total, 85 null alleles, 121 off-ladder alleles, and 95 copy number variants were observed, and 1012 distinct haplotypes were determined with the overall HD and DC values of 0.999974 and 0.9912. We observed 369 mutations in 76 099 meiotic transfers, and the average estimated Y-STR mutation rate was 4.85 × 10-3 (95% CI, 4.4 × 10-3 -5.4 × 10-3 ). The Spearman correlation analyses indicated that GD values (R2 = 0.6548) and average allele sizes (R2 = 0.5989) have positive correlations with Y-STR mutation rates. Our RM Y-STR set including 8 candidate RM Y-STRs, of which DYS534, DYS630, and DYS713 are new candidates in CSEH, distinguished 18.52% of father-son pairs. This study also clarified the population structures of CSEH which isolated in population-mixed South China relatively. The strategy, SM Y-STRs for familial searching and RM Y-STRs for individual identification regionally, could be applicable based on enough knowledge of the Y-STR mutability of different populations.
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Affiliation(s)
- Haoliang Fan
- School of Forensic Medicine, Southern Medical University, Guangzhou, P. R. China
| | - Ying Zeng
- School of Forensic Medicine, Southern Medical University, Guangzhou, P. R. China
| | - Weiwei Wu
- Zhejiang Key Laboratory of Forensic Science and Technology, Institute of Forensic Science of Zhejiang Provincial Public Security Bureau, Hangzhou, P. R. China
| | - Hong Liu
- Guangzhou Forensic Science Institute, Guangzhou, P. R. China
| | - Quyi Xu
- Guangzhou Forensic Science Institute, Guangzhou, P. R. China
| | - Weian Du
- School of Forensic Medicine, Southern Medical University, Guangzhou, P. R. China
| | - Honglei Hao
- Zhejiang Key Laboratory of Forensic Science and Technology, Institute of Forensic Science of Zhejiang Provincial Public Security Bureau, Hangzhou, P. R. China
| | - Changhui Liu
- Guangzhou Forensic Science Institute, Guangzhou, P. R. China
| | - Wenyan Ren
- Zhejiang Key Laboratory of Forensic Science and Technology, Institute of Forensic Science of Zhejiang Provincial Public Security Bureau, Hangzhou, P. R. China
| | - Weibin Wu
- School of Forensic Medicine, Southern Medical University, Guangzhou, P. R. China
| | - Ling Chen
- School of Forensic Medicine, Southern Medical University, Guangzhou, P. R. China
| | - Chao Liu
- School of Forensic Medicine, Southern Medical University, Guangzhou, P. R. China.,Guangzhou Forensic Science Institute, Guangzhou, P. R. China
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15
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Luo C, Duan L, Li Y, Xie Q, Wang L, Ru K, Nazir S, Jawad M, Zhao Y, Wang F, Du Z, Peng D, Wen SQ, Qiu P, Fan H. Insights From Y-STRs: Forensic Characteristics, Genetic Affinities, and Linguistic Classifications of Guangdong Hakka and She Groups. Front Genet 2021; 12:676917. [PMID: 34108995 PMCID: PMC8181459 DOI: 10.3389/fgene.2021.676917] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 04/06/2021] [Indexed: 12/02/2022] Open
Abstract
Guangdong province is situated in the south of China with a population size of 113.46 million. Hakka is officially recognized as a branch of Han Chinese, and She is the official minority group in mainland China. There are approximately 25 million Hakka people who mainly live in the East and North regions of China, while there are only 0.7 million She people. The genetic characterization and forensic parameters of these two groups are poorly defined (She) or still need to be explored (Hakka). In this study, we have genotyped 475 unrelated Guangdong males (260 Hakka and 215 She) with Promega PowerPlex® Y23 System. A total of 176 and 155 different alleles were observed across all 23 Y-STRs for Guangdong Hakka (with a range of allele frequencies from 0.0038 to 0.7423) and Guangdong She (0.0047–0.8605), respectively. The gene diversity ranged from 0.4877 to 0.9671 (Guangdong Hakka) and 0.3277–0.9526 (Guangdong She), while the haplotype diversities were 0.9994 and 0.9939 for Guangdong Hakka and Guangdong She, with discrimination capacity values of 0.8885 and 0.5674, respectively. With reference to geographical and linguistic scales, the phylogenetic analyses showed us that Guangdong Hakka has a close relationship with Southern Han, and the genetic pool of Guangdong Hakka was influenced by surrounding Han populations. The predominant haplogroups of the Guangdong She group were O2-M122 and O2a2a1a2-M7, while Guangdong She clustered with other Tibeto-Burman language-speaking populations (Guizhou Tujia and Hunan Tujia), which shows us that the Guangdong She group is one of the branches of Tibeto-Burman populations and the Huonie dialect of She languages may be a branch of Tibeto-Burman language families.
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Affiliation(s)
- Chunfang Luo
- School of Forensic Medicine, Southern Medical University, Guangzhou, China.,Heyuan Municipal Public Security Bureau, Heyuan, China
| | - Lizhong Duan
- Beijing Municipal Public Security Bureau, Beijing, China
| | - Yanning Li
- School of Forensic Medicine, Southern Medical University, Guangzhou, China.,School of Basic Medicine, Gannan Medical University, Ganzhou, China
| | - Qiqian Xie
- School of Forensic Medicine, Southern Medical University, Guangzhou, China
| | - Lingxiang Wang
- Institute of Archaeological Science, Fudan University, Shanghai, China
| | - Kai Ru
- Institute of Archaeological Science, Fudan University, Shanghai, China
| | - Shahid Nazir
- Department of Forensic Sciences, University of Health Sciences, Lahore, Pakistan
| | - Muhammad Jawad
- Department of Forensic Sciences, University of Health Sciences, Lahore, Pakistan
| | - Yifeng Zhao
- Nanjing Zhenghong Judicial Identification Institute, Nanjing, China
| | - Fenfen Wang
- First Clinical Medical College, Hainan Medical University, Haikou, China
| | - Zhengming Du
- First Clinical Medical College, Hainan Medical University, Haikou, China
| | - Dehua Peng
- Heyuan Municipal Public Security Bureau, Heyuan, China
| | - Shao-Qing Wen
- Institute of Archaeological Science, Fudan University, Shanghai, China
| | - Pingming Qiu
- School of Forensic Medicine, Southern Medical University, Guangzhou, China
| | - Haoliang Fan
- School of Forensic Medicine, Southern Medical University, Guangzhou, China.,Institute of Archaeological Science, Fudan University, Shanghai, China.,School of Basic Medicine and Life Science, Hainan Medical University, Haikou, China
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16
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Song Z, Wang Q, Zhang H, Tang J, Wang Q, Zhang H, Yang M, Ji J, Ren Z, Wu Y, Huang J. Genetic structure and forensic characterization of 36 Y-chromosomal STR loci in Tibeto-Burman-speaking Yi population. Mol Genet Genomic Med 2021; 9:e1572. [PMID: 33448700 PMCID: PMC8077142 DOI: 10.1002/mgg3.1572] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 11/05/2020] [Accepted: 11/20/2020] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Male-specifically inherited Y-STRs have been widely used in population genetics and forensic investigations. METHODS We genotyped and analyzed Y chromosome haplotypes of 408 unrelated Tibeto-Burman-speaking Yi male individuals from Guizhou using Goldeneye® Y-PLUS kit. Population comparisons between the Guizhou Yi and 67 reference groups were performed via the AMOVA, MDS, and phylogenetic relationship reconstruction. RESULTS A total of 389 alleles and 396 haplotypes could be detected, and the allelic frequencies ranged from 0.0025 to 0.9875. The haplotype diversity, random match probability, and discrimination capacity values were 0.9999, 0.0026, and 0.9900, respectively. The gene diversity (GD) of 36 Y-STR loci in the studied group ranged from 0.0248 (DYS645) to 0.9601 (DYS385a/b). Our newly genotyped Yi samples show a close affinity with other Tibeto-Burman speaking groups in China and Southeast Asia. CONCLUSIONS The population stratification was almost consistent with the geographic distribution and language-family, both among Chinese and worldwide ethnic groups. Our data may provide useful information for paternal lineage in the forensic application and population genetics, as well as evidence for archaeological and historical research.
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Affiliation(s)
- Zhengyang Song
- Department of Forensic MedicineGuizhou Medical UniversityGuiyangChina
| | - Qian Wang
- Guiyang Judicial Expertise Center of Public SecurityGuiyangChina
| | - Han Zhang
- Department of Forensic MedicineGuizhou Medical UniversityGuiyangChina
| | - Jing Tang
- Guiyang Judicial Expertise Center of Public SecurityGuiyangChina
| | - Qiyan Wang
- Department of Forensic MedicineGuizhou Medical UniversityGuiyangChina
| | - Hongling Zhang
- Department of Forensic MedicineGuizhou Medical UniversityGuiyangChina
| | - Meiqing Yang
- Department of Forensic MedicineGuizhou Medical UniversityGuiyangChina
| | - Jingyan Ji
- Department of Forensic MedicineGuizhou Medical UniversityGuiyangChina
| | - Zheng Ren
- Department of Forensic MedicineGuizhou Medical UniversityGuiyangChina
| | - Yan Wu
- Department of Forensic MedicineGuizhou Medical UniversityGuiyangChina
| | - Jiang Huang
- Department of Forensic MedicineGuizhou Medical UniversityGuiyangChina
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17
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Diao Y, Adnan A, Lin Q, Sun C, Wang L. Genetic characterisation and forensic importance of 20 Y-STRs in Han population from Anshan, Northeast of China. Ann Hum Biol 2020; 47:478-482. [PMID: 32530317 DOI: 10.1080/03014460.2020.1781930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
BACKGROUND With a population of over 1.4 billion and 56 ethnic groups, China is the largest country in the world in terms of population. Han is the main ethnic group of China (93%). AIM To provide genetic data of Y chromosomal STRs from Anshan City, Northeast of China, for the first time, which will serve as a reference database for forensic and population studies. SUBJECTS AND METHODS We report data of 20 Y-chromosomal short tandem repeats (YSTRs) genotyped with the Goldeneye® 20Y kit in 270 Han individuals residing in Anshan City of China. RESULTS A total of 170 alleles were observed on 20 Y-STRs. The gene diversities varied from 0.3460 (DYS391) to 0.9692 (DYS385). Overall haplotype diversity was almost 1 with 261 unique haplotypes, while the discrimination capacity (DC) was 0.9814. Pairwise Rst and Fst genetic analyses, MDS plot, N-J tree and PCA showed the genetic structure of Anshan Han population was significantly different from other minority groups like Tibetans and Kazakhs. CONCLUSIONS Results of this study showed that Goldeneye® 20Y system loci have strong discriminatory power in the Anshan Han population of China which makes this kit suitable for forensic applications in this ethnic group.
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Affiliation(s)
- Yefang Diao
- Teaching Affairs Office, International Education School China Medical University, Shenyang, Liaoning, P.R. China
| | - Atif Adnan
- Department of Human Anatomy, College of Basic Medical Science, China Medical University, Shenyang, Liaoning, P.R. China
| | - Qin Lin
- Department of Human Anatomy, College of Basic Medical Science, China Medical University, Shenyang, Liaoning, P.R. China
| | - Chang Sun
- MOE Key Laboratory of Contemporary Anthropology, Fudan University, Shanghai, China
| | - Lie Wang
- Department of Social Medicine, School of Public Health, China Medical University, Shenyang, Liaoning, P.R. China
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18
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Tang J, Yang M, Wang X, Wang Q, Wang Q, Zhang H, Qian E, Zhang H, Ji J, Ren Z, Wu Y, Huang J. Genetic structure and forensic characterisation of 36 Y-chromosomal STR loci in Hmong-Mien-speaking Miao population. Ann Hum Biol 2020; 47:541-548. [PMID: 32597239 DOI: 10.1080/03014460.2020.1788159] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
BACKGROUND Y-chromosomal short tandem repeats (Y-STRs) are widely used in paternity identification, pedigree investigation, and human population genetic history. AIM To investigate the Y-STR polymorphisms in a typical Miao population, and explore the genetic differentiation between the Miao population and reference groups. SUBJECTS AND METHODS We detected 36 Y-STRs genotyping in 455 unrelated Miao individuals from Guizhou province, and analysed genetic differentiation between the Miao population and 76 reference groups. RESULTS A total of 369 alleles were obtained, and the allele frequencies ranged from 0.0022 to 0.9802. In addition, the haplotype diversity, random match probability, and discrimination capacity values were 0.99997, 0.0022, and 0.9934, respectively. Moreover, the genetic relationships between Guizhou Miao and 76 ethnic populations showed that the population stratification was almost consistent with geographic distribution and language-family. CONCLUSIONS The 36 Y-STR loci in this study have good polymorphism distributions in the Guizhou Miao population, and therefore would be a useful tool in forensic identification and male parentage testing and even pedigree investigation.
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Affiliation(s)
- Jing Tang
- Guiyang Judicial Expertise Center of Public Security, Guiyang, Guizhou, China
| | - Meiqing Yang
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, China
| | - Xiaojuan Wang
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, China
| | - Qian Wang
- Guiyang Judicial Expertise Center of Public Security, Guiyang, Guizhou, China
| | - Qiyan Wang
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, China
| | - Hongling Zhang
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, China
| | - Enfang Qian
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, China
| | - Han Zhang
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, China
| | - Jingyan Ji
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, China
| | - Zheng Ren
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, China
| | - Yan Wu
- Guiyang Judicial Expertise Center of Public Security, Guiyang, Guizhou, China
| | - Jiang Huang
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, China
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19
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Zhou Y, Yao Y, Liu B, Yang Q, Zhou Z, Shao C, Li S, Tang Q, Xie J. Characterizing Y-STRs in the Evaluation of Population Differentiation Using the Mean of Allele Frequency Difference between Populations. Genes (Basel) 2020; 11:genes11050566. [PMID: 32438591 PMCID: PMC7290957 DOI: 10.3390/genes11050566] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/18/2020] [Accepted: 05/13/2020] [Indexed: 01/17/2023] Open
Abstract
Y-chromosomal short tandem repeats (Y-STRs) are widely used in human research for the evaluation of population substructure or population differentiation. Previous studies show that several haplotype sets can be used for the evaluation of population differentiation. However, little is known about whether each Y-STR in these sets performs well during this procedure. In this study, a total of 20,927 haplotypes of a Yfiler Plus set were collected from 41 global populations. Different configurations were observed in multidimensional scaling (MDS) plots based on pairwise genetic distances evaluated using a Yfiler set and a Yfiler Plus set, respectively. Subsequently, 23 single-copy Y-STRs were characterized in the evaluation of population differentiation using the mean of allele frequency difference (mAFD) between populations. Our results indicated that DYS392 had the largest mAFD value (0.3802) and YGATAH4 had the smallest value (0.1845). On the whole, larger pairwise genetic distances could be obtained using the set with the top fifteen markers from these 23 single-copy Y-STRs, and clear clustering or separation of populations could be observed in the MDS plot in comparison with those using the set with the minimum fifteen markers. In conclusion, the mAFD value is reliable to characterize Y-STRs for efficiency in the evaluation of population differentiation.
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Affiliation(s)
- Yuxiang Zhou
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China; (Y.Z.); (Y.Y.); (B.L.); (Q.Y.); (Z.Z.); (C.S.)
| | - Yining Yao
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China; (Y.Z.); (Y.Y.); (B.L.); (Q.Y.); (Z.Z.); (C.S.)
| | - Baonian Liu
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China; (Y.Z.); (Y.Y.); (B.L.); (Q.Y.); (Z.Z.); (C.S.)
| | - Qinrui Yang
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China; (Y.Z.); (Y.Y.); (B.L.); (Q.Y.); (Z.Z.); (C.S.)
| | - Zhihan Zhou
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China; (Y.Z.); (Y.Y.); (B.L.); (Q.Y.); (Z.Z.); (C.S.)
| | - Chengchen Shao
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China; (Y.Z.); (Y.Y.); (B.L.); (Q.Y.); (Z.Z.); (C.S.)
| | - Shilin Li
- Ministry of Education Key Laboratory of Contemporary Anthropology and State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai 200433, 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; (Y.Z.); (Y.Y.); (B.L.); (Q.Y.); (Z.Z.); (C.S.)
- Correspondence: ; Tel.: +86-21-54237569
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20
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Yin C, Ren Y, Adnan A, Tian J, Guo K, Xia M, He Z, Zhai D, Chen X, Wang L, Li X, Qin X, Li S, Jin L. Title: Developmental validation of Y-SNP pedigree tagging system: A panel via quick ARMS PCR. Forensic Sci Int Genet 2020; 46:102271. [DOI: 10.1016/j.fsigen.2020.102271] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 03/01/2020] [Accepted: 03/02/2020] [Indexed: 11/26/2022]
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21
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Ay M, Serin A, Canan H, Cekin N. Haplotype data for the 12 RM Y-STR loci in a Syrian population. FORENSIC SCIENCE INTERNATIONAL GENETICS SUPPLEMENT SERIES 2019. [DOI: 10.1016/j.fsigss.2019.09.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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22
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Lang M, Song F, Ye Y, Xie M, Zhu H, Wang Z, Hou Y. Sequence characterization of microvariant alleles at DYS627 and DYS458. FORENSIC SCIENCE INTERNATIONAL GENETICS SUPPLEMENT SERIES 2019. [DOI: 10.1016/j.fsigss.2019.09.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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23
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Luo Y, Wu Y, Qian E, Wang Q, Wang Q, Zhang H, Wang X, Zhang H, Yang M, Ji J, Ren Z, Zhang Y, Tang J, Huang J. Population genetic analysis of 36 Y-chromosomal STRs yields comprehensive insights into the forensic features and phylogenetic relationship of Chinese Tai-Kadai-speaking Bouyei. PLoS One 2019; 14:e0224601. [PMID: 31703068 PMCID: PMC6839857 DOI: 10.1371/journal.pone.0224601] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 10/17/2019] [Indexed: 11/18/2022] Open
Abstract
Male-specifically inherited Y-STRs, harboring the features of haploidy and lack of crossing over, have gained considerable attention in population genetics and forensic investigations. Goldeneye® Y-PLUS kit was a recently developed amplification system focused on the genetic diversity of 36 Y-chromosomal short tandem repeats (Y-STRs) in East Asians. However, no population data and corresponding forensic features were reported in China. Here, 36 Y-STRs were first genotyped in 400 unrelated healthy Tai-Kadai-speaking Bouyei male individuals. A total of 371 alleles and 396 haplotypes could be detected, and the allelic frequencies ranged from 0.0025 to 0.9875. The haplotype diversity, random match probability and discrimination capacity values were 0.9999, 0.0026 and 0.9900, respectively. The gene diversity (GD) of 36 Y-STR loci in the studied group ranged from 0.0248 (DYS645) to 0.9601 (DYS385a/b). Population comparisons between the Guizhou Bouyei and 80 reference groups were performed via the AMOVA, MDS, and phylogenetic relationship reconstruction. The results showed that the population stratification was almost consistent with the geographic distribution and language-family, both among Chinese and worldwide ethnic groups. Our newly genotyped Bouyei samples show a close affinity with other Tai-Kadai-speaking groups in China and Southeast Asia. Our data may provide useful information for paternal lineage in the forensic application and population genetics, as well as evidence for archaeological and historical research.
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Affiliation(s)
- Ya Luo
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, China
| | - Yan Wu
- Guiyang Judicial Expertise Center of Public Security, Guiyang, Guizhou, China
| | - Enfang Qian
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, China
| | - Qian Wang
- Guiyang Judicial Expertise Center of Public Security, Guiyang, Guizhou, China
| | - Qiyan Wang
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, China
| | - Hongling Zhang
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, China
| | - Xiaojuan Wang
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, China
| | - Han Zhang
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, China
| | - Meiqing Yang
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, China
| | - Jingyan Ji
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, China
| | - Zheng Ren
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, China
| | - Ying Zhang
- Guiyang Judicial Expertise Center of Public Security, Guiyang, Guizhou, China
| | - Jing Tang
- Guiyang Judicial Expertise Center of Public Security, Guiyang, Guizhou, China
- * E-mail: (JT); (JH)
| | - Jiang Huang
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, China
- * E-mail: (JT); (JH)
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24
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Henry J, Scandrett L. Assessment of the Yfiler® Plus PCR amplification kit for the detection of male DNA in semen-negative sexual assault cases. Sci Justice 2019; 59:480-485. [PMID: 31472792 DOI: 10.1016/j.scijus.2019.05.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 04/29/2019] [Accepted: 05/06/2019] [Indexed: 11/19/2022]
Abstract
The ability to detect male epithelial cells deposited during digital penetration or penile penetration without ejaculation is limited by the sensitivity of the Y-STR profiling kit. In this study, the relative profiling success of the Thermofisher Yfiler® Plus kit was compared to its predecessor, AmpFlSTR Yfiler®, for 104 semen-negative sexual assault samples from casework at Forensic Science SA, Adelaide, South Australia. Yfiler Plus generated allele information in 25% more samples than Yfiler and gave a higher recovery of informative alleles in all but two samples where detectable male DNA was present. Where a profile was obtained in both kits, 92% of samples gave a higher percentage of informative loci with Yfiler Plus compared to Yfiler. Yfiler Plus also resolved DNA mixtures in 15 samples as compared to 1 sample with Yfiler. Detection of male DNA with the Quantifiler™ Trio DNA Quantification kit was shown to correlate with a successful profiling outcome with Yfiler Plus. The success of profiling with Yfiler Plus was independent of the time elapsed between the alleged offence and the sample being collected, the type of sexual penetration which occurred, and the anatomical origin of the sample.
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Affiliation(s)
- Julianne Henry
- Forensic Science SA, GPO Box 2790, Adelaide, South Australia 5001, Australia; College of Science and Engineering, Flinders University of South Australia, GPO Box 2100, Adelaide, South Australia 5001, Australia.
| | - Lenara Scandrett
- Forensic Science SA, GPO Box 2790, Adelaide, South Australia 5001, Australia.
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25
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Adnan A, Rakha A, Ameen F, Alarfaj AA, Almansob A, Wang CC, Lu J, Xing J. Genetic structure and forensic characteristics of Saraiki population from Southern Punjab, Pakistan, revealed by 20 Y-chromosomal STRs. Int J Legal Med 2019; 134:977-979. [PMID: 31392415 DOI: 10.1007/s00414-019-02138-6] [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: 05/30/2019] [Accepted: 07/29/2019] [Indexed: 10/26/2022]
Abstract
Pakistan harbors more than 18 major ethnic groups which speak 60 different languages. People speaking Saraiki languages are known as Saraiki or Multani. They are mainly residents of Southern Punjab including Multan, Dear Ghazi Khan, Rajanpur, and Rahim Yar khan. Here, we reported the data of 20 Y-chromosomal short tandem repeats (Y-STRs) genotyped with the Goldeneye® 20Y kit in 154 unrelated Saraiki individuals. We observed 141 different haplotypes on 20 Y-STR loci and the gene diversity (GD) ranged from 0.6566 (DYS448) to 0.9538 (DYS385a, b). The overall haplotype diversity was 0.9989 at 20 Y-STRs loci. Furthermore, we performed population genetic analyses by including data from 26 other South Asian populations. The presented haplotype data was recently included in the Y-Chromosome Haplotype Reference Database (YHRD) for future forensic and other usage.
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Affiliation(s)
- Atif Adnan
- Department of Human Anatomy, School of Basic Medicine, China Medical University, Shenyang, 110122, China.
| | - Allah Rakha
- Department of Forensic Sciences, University of Health Sciences, Lahore, 54000, Pakistan
| | - Fuad Ameen
- Department of Botany & Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Abdullah A Alarfaj
- Department of Botany & Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - A Almansob
- Department of Botany & Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Chuan-Chao Wang
- Department of Anthropology and Ethnology, Xiamen University, Xiamen, 361005, China
| | - Jie Lu
- Department of Human Anatomy, School of Basic Medicine, China Medical University, Shenyang, 110122, China.
| | - Jiaxin Xing
- Department of Forensic Genetics and Biology, School of Forensic Medicine, China Medical University, Shenyang, 110122, China.
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Xuan JF, Adnan A, Khan RA, Xing JX, Yao J, Wang BJ. Population genetics of 19 Y-STR loci in Yanbian Korean samples from China. Ann Hum Genet 2018; 83:134-140. [PMID: 30506867 DOI: 10.1111/ahg.12296] [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: 06/14/2018] [Revised: 10/18/2018] [Accepted: 11/20/2018] [Indexed: 11/28/2022]
Abstract
BACKGROUND China harbors 56 ethnic groups, including Korean, with a population size of approximately 1.92 million at the 2010 census. Most of the Koreans live in Northeastern parts of China, including Jilin (59.64%), Heilongjiang (20.21%), and Liaoning (12.55%) provinces, and the rest are spread to other parts of China. Koreans across China share a common culture, which is similar to Korea. METHODS We have explored the genetic characteristics of 20 Y-chromosomal short tandem repeat (Y-STR) loci in 252 unrelated Chinese Korean male individuals from Jilin Province, using a Goldeneye 20Y amplification kit. Moreover, phylogenetic analysis was performed between the Korean population and other relevant populations based on the Y-STR haplotypes. RESULTS We have found 237 different haplotypes among 252 unrelated individuals. The haplotype frequencies ranged from 0.0238 to 0.0040, while gene diversity ranged from 0.9666 (DYS385a/b) to 0.2260 (DYS391). The random match probability was 0.0048, the haplotype diversity was 0.9992 ± 0.0006 and discrimination capacity was 0.9405. Population comparison revealed that Korean populations are lining up together with other Korean populations from East Asia. CONCLUSION Our results showed that the 20 Y-STR loci in the Yanbian Korean population are valuable for forensic application and human genetics. The Yanbian Koreans have lined up with other Korean population from China and Korea while showing significant differences from other East Asian populations.
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Affiliation(s)
- Jin-Feng Xuan
- School of Forensic Medicine, China Medical University, Shenyang, 110122, China
| | - Atif Adnan
- School of Forensic Medicine, China Medical University, Shenyang, 110122, China
| | - Rehan Ali Khan
- School of International Education, China Medical University, Shenyang, 110122, China
| | - Jia-Xin Xing
- School of Forensic Medicine, China Medical University, Shenyang, 110122, China
| | - Jun Yao
- School of Forensic Medicine, China Medical University, Shenyang, 110122, China
| | - Bao-Jie Wang
- School of Forensic Medicine, China Medical University, Shenyang, 110122, China
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Oh S, Kim J, Park S, Kim S, Lee K, Lee YH, Lim SK, Lee H. Prediction of Y haplogroup by polymerase chain reaction-reverse blot hybridization assay. Genes Genomics 2018; 41:297-304. [PMID: 30456526 DOI: 10.1007/s13258-018-0761-6] [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: 06/19/2018] [Accepted: 10/30/2018] [Indexed: 11/28/2022]
Abstract
BACKGROUND The analysis of Y-SNPs from crime scene samples is helpful for investigators in narrowing down suspects by predicting biogeographical ancestry. OBJECTIVE In this study, a PCR-reverse blot hybridization assay (REBA) for predicting Y-chromosome haplogroups was employed to determine the major haplogroups worldwide, including AB, DE, C, C3, F, K, NO, O, O2, and O3 and evaluated. METHODS The REBA detects nine biallelic Y chromosome markers (M9, M89, M122, M145, M175, M214, M217, P31, and RPS4Y711) simultaneously using multiple probes. RESULTS The REBA for Y-single nucleotide polymorphisms (SNP) genotyping was performed using 40 DNA samples from Asians-14 Koreans, 10 Indonesians, six Chineses, six Thais, and four Mongolians. 40 Asian samples were identified as haplogroup O2 (40%), O3 (32.5%), C3 (17.5%), O (7.5%) and K (2.5%). These cases were confirmed by DNA sequence analysis (κ = 1.00; P < 0.001). CONCLUSION PCR-REBA is a rapid and reliable method that complements other SNP detection methods. Therefore, implementing REBA for Y-SNP testing may be a useful tool in predicting Y-chromosome haplogroups.
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Affiliation(s)
- Sehee Oh
- Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University, 1 Yonseidae-gil, Wonju-si, Gangwon-do, 26493, Republic of Korea
- Forensic DNA Division, National Forensic Service, 10 Ipchun-ro, Wonju, Gangwon, Republic of Korea
| | - Jungho Kim
- Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University, 1 Yonseidae-gil, Wonju-si, Gangwon-do, 26493, Republic of Korea
| | - Sunyoung Park
- Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University, 1 Yonseidae-gil, Wonju-si, Gangwon-do, 26493, Republic of Korea
| | - Seoyong Kim
- Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University, 1 Yonseidae-gil, Wonju-si, Gangwon-do, 26493, Republic of Korea
| | - Kyungmyung Lee
- Forensic DNA Division, National Forensic Service, 10 Ipchun-ro, Wonju, Gangwon, Republic of Korea
| | - Yang-Han Lee
- Forensic DNA Division, National Forensic Service, 10 Ipchun-ro, Wonju, Gangwon, Republic of Korea
| | - Si-Keun Lim
- Forensic DNA Division, National Forensic Service, 10 Ipchun-ro, Wonju, Gangwon, Republic of Korea.
| | - Hyeyoung Lee
- Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University, 1 Yonseidae-gil, Wonju-si, Gangwon-do, 26493, Republic of Korea.
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Genetic characterization of Y-chromosomal STRs in Hazara ethnic group of Pakistan and confirmation of DYS448 null allele. Int J Legal Med 2018; 133:789-793. [DOI: 10.1007/s00414-018-1962-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 10/24/2018] [Indexed: 10/28/2022]
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Wang Q, Jin B, An G, Zhong Q, Chen M, Luo X, Li Z, Jiang Y, Liang W, Zhang L. Rapidly mutating Y-STRs study in Chinese Yi population. Int J Legal Med 2018; 133:45-50. [PMID: 30062654 DOI: 10.1007/s00414-018-1894-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Accepted: 07/17/2018] [Indexed: 12/01/2022]
Abstract
Y-chromosomal short tandem repeats (Y-STRs) have been widely used in forensic analysis and population genetics. With low to moderate mutation rates, conventional Y-STR panels, including commercially available Y-STR kits, enable the identification of male pedigrees but typically fail to differentiate related male individuals. The introduction of rapidly mutating Y-chromosomal short tandem repeats (RM Y-STRs) with higher mutation rates (μ > 10-2) has been demonstrated to increase the discrimination capacity of unrelated men and the differentiation rate of related men compared with standard Y-STRs. To date, several studies have been performed worldwide. Here, 260 father-son pairs from Chinese Yi population were investigated, and 18.8% of them were differentiated with the 13 RM Y-STR markers, which was close to the theoretical estimate of 19.5% based on the mutation rates of these markers. Among the 57 mutations observed, repeat gains were more common than repeat losses (1.48:1), and one-step mutations were more common than two-step mutations (27.5:1). Locus-specific mutation rates ranged from < 3.85 × 10-3 (95% CI 0.00-1.41 × 10-2) to 3.85 × 10-2 (95% CI 1.86 × 10-2-6.96 × 10-2), with an average mutation rate of 1.46 × 10-2 (95% CI 1.11 × 10-2-1.89 × 10-2). Furthermore, we combined the father-son pair data from the present study with the data from the previous studies, generating an overall mutation rate of 1.70 × 10-2. The high differentiation rate obtained in the present study indicates the suitability of RM Y-STRs to distinguish paternal lineages in Chinese Yi population.
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Affiliation(s)
- Qian Wang
- Department of Forensic Genetics, West China School of Basic Sciences and Forensic Medicine, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Bo Jin
- Department of Forensic Genetics, West China School of Basic Sciences and Forensic Medicine, Sichuan University, Chengdu, 610041, Sichuan, China.,Department of Forensic Medicine, North Sichuan Medical College, Nanchong, 637000, Sichuan, China.,Forensic Science Service Center, North Sichuan Medical College, Nanchong, 637000, Sichuan, China
| | - Gang An
- Sichuan Forest Forensic Center, Chengdu, 610041, Sichuan, China
| | - Qian Zhong
- Sichuan Forest Forensic Center, Chengdu, 610041, Sichuan, China
| | - Meijun Chen
- Sichuan Forest Forensic Center, Chengdu, 610041, Sichuan, China
| | - Xiaoying Luo
- Sichuan Forest Forensic Center, Chengdu, 610041, Sichuan, China
| | - Zhilong Li
- Department of Forensic Genetics, West China School of Basic Sciences and Forensic Medicine, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Youjing Jiang
- Department of Forensic Genetics, West China School of Basic Sciences and Forensic Medicine, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Weibo Liang
- Department of Forensic Genetics, West China School of Basic Sciences and Forensic Medicine, Sichuan University, Chengdu, 610041, Sichuan, China.
| | - Lin Zhang
- Department of Forensic Genetics, West China School of Basic Sciences and Forensic Medicine, Sichuan University, Chengdu, 610041, Sichuan, China.
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30
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He H, Zha L, Cai J, Huang J. The forensic value of X-linked markers in mixed-male DNA analysis. Int J Legal Med 2018; 132:1281-1285. [PMID: 29728767 DOI: 10.1007/s00414-018-1841-5] [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: 01/14/2018] [Accepted: 04/03/2018] [Indexed: 11/28/2022]
Abstract
Autosomal genetic markers and Y chromosome markers have been widely applied in analysis of mixed stains at crime scenes by forensic scientists. However, true genotype combinations are often difficult to distinguish using autosomal markers when similar amounts of DNA are contributed by multiple donors. In addition, specific individuals cannot be determined by Y chromosomal markers because male relatives share the same Y chromosome. X-linked markers, possessing characteristics somewhere intermediate between autosomes and the Y chromosome, are less universally applied in criminal casework. In this paper, X markers are proposed to apply to male mixtures because their true genes can be more easily and accurately recognized than the decision of the genotypes of AS markers. In this study, an actual two-man mixed stain from a forensic case file and simulated male-mixed DNA were examined simultaneously with the X markers and autosomal markers. Finally, the actual mixture was separated successfully by the X markers, although it was unresolved by AS-STRs, and the separation ratio of the simulated mixture was much higher using Chr X tools than with AS methods. We believe X-linked markers provide significant advantages in individual discrimination of male mixtures that should be further applied to forensic work.
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Affiliation(s)
- HaiJun He
- Department of Forensic Pathology, College of Forensic Medicine, Xi'an Jiaotong University, Xi'an, Shanxi Province, People's Republic of China.,Criminal Investigation Division, Changsha Public Security Bureaus, Changsha, 410004, Hunan, People's Republic of China
| | - Lagabaiyila Zha
- Department of Forensic Sciences, School of Basic Medicine, Central South University, Changsha, Hunan, People's Republic of China
| | - JinHong Cai
- Department of Forensic Genetics, Brain Hospital of Hunan Province, Hunan University of Chinese Medicine, Changsha, 410007, People's Republic of China
| | - Jian Huang
- Department of Forensic Genetics, Brain Hospital of Hunan Province, Hunan University of Chinese Medicine, Changsha, 410007, People's Republic of China.
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Zhou Y, Shao C, Li L, Zhang Y, Liu B, Yang Q, Tang Q, Li S, Xie J. Genetic analysis of 29 Y-STR loci in the Chinese Han population from Shanghai. Forensic Sci Int Genet 2018; 32:e1-e4. [DOI: 10.1016/j.fsigen.2017.11.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Revised: 09/27/2017] [Accepted: 11/09/2017] [Indexed: 10/18/2022]
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32
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Ullah S, Garg RK, Noor F. DNA perspectives of fixed and paraffin embedded human tissues as resource materials for the identification. EGYPTIAN JOURNAL OF FORENSIC SCIENCES 2017. [DOI: 10.1186/s41935-017-0027-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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33
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Liu Z, Jia D, Zhang J, Li C, Zhang X, Yang Y, Yang M, Chen M, Yu Z, Wang Y, Yan J. Inconsistent genotyping call at DYS389 locus and implications for interpretation. Int J Legal Med 2017; 132:1043-1048. [PMID: 29177704 DOI: 10.1007/s00414-017-1735-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Accepted: 11/08/2017] [Indexed: 11/26/2022]
Abstract
The male-specific Y chromosome short tandem repeat (STR) locus is used widely in forensic case, which are useful molecular tool to providing the biological evidence for male/female mixture and paternal lineage cases. The Y-STR analysis has been greatly facilitated by advent of commercial multiplex kit. However, even with well-designed robust multiplex kit, abnormal genotyping profile may be observed when encountering with mutations, such as deletion/duplication within the target region or mutation at the primer binding site. In this study, a single-allele shift by five nucleotides for the DYS389I marker between the AmpFlSTR® Yfiler® and Yfiler® Plus PCR amplification kits while the same allele count for DYS389II was observed in eight unrelated Chinese male individuals. After further investigations by re-amplified with three additional multiplex kits, sanger, and next-generation sequencing, the discordance was finally proven caused by existing rare mutation in those sample, which contained two adjacent SNPs only one base apart in the sequence. This paper describes the molecular basis of the discordance at DYS389I genotyping between different commercial multiplex kits and could provide available information for enhancing of interpretation of abnormal Y-STR genotyping in forensic practice.
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Affiliation(s)
- Zhiyong Liu
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, NO.1 Beichen West Road, Chaoyang District, 100101, Beijing, People's Republic of China
- University of Chinese Academy of Sciences, 100049, Beijing, People's Republic of China
| | - Dongtao Jia
- Nantong Bureau of Public Safety, 226000, Nantong, Jiangsu, People's Republic of China
| | - Jingjing Zhang
- Beijing 3i Forensics Technology Co., Ltd, 100192, Beijing, People's Republic of China
| | - Chen Li
- Beijing Microread Genetics Co., Ltd, 100089, Beijing, People's Republic of China
| | - Xi Zhang
- Beijing 3i Forensics Technology Co., Ltd, 100192, Beijing, People's Republic of China
| | - Yaran Yang
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, NO.1 Beichen West Road, Chaoyang District, 100101, Beijing, People's Republic of China
| | - Meng Yang
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, NO.1 Beichen West Road, Chaoyang District, 100101, Beijing, People's Republic of China
| | - Man Chen
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, NO.1 Beichen West Road, Chaoyang District, 100101, Beijing, People's Republic of China
- University of Chinese Academy of Sciences, 100049, Beijing, People's Republic of China
| | - Zailiang Yu
- Beijing Microread Genetics Co., Ltd, 100089, Beijing, People's Republic of China
| | - Yan Wang
- Beijing 3i Forensics Technology Co., Ltd, 100192, Beijing, People's Republic of China
| | - Jiangwei Yan
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, NO.1 Beichen West Road, Chaoyang District, 100101, Beijing, People's Republic of China.
- University of Chinese Academy of Sciences, 100049, Beijing, People's Republic of China.
- Shanxi Medical University, 030009, Taiyuan, People's Republic of China.
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Tan Y, Wang L, Wang H, Tian H, Li Z, Wang Q, Jian H, Cao S, Liang W, Zhang L. An investigation of a set of DIP-STR markers to detect unbalanced DNA mixtures among the southwest Chinese Han population. Forensic Sci Int Genet 2017; 31:34-39. [PMID: 28826062 DOI: 10.1016/j.fsigen.2017.08.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 08/09/2017] [Accepted: 08/11/2017] [Indexed: 11/19/2022]
Abstract
The resolution of DNA mixtures is still a difficult problem that is worthy of further study. A common method applied for analysing mixtures is the use of autosomal STR markers as well as related calculation software based on genotypes; however, these markers have a limitation in detecting minor DNA in unbalanced mixtures if major DNA constitutes over 95% of the stain. Novel biomarkers, such as Y-STR, DIP-STR and SNP-STR, have been shown to perform well in distinguishing DNA donors in this type of mixture. DIP-STR can successfully target minor DNA in 1000-fold background DNA using two separate allele-specific primers. However, whether this method can successfully detect minor DNA primarily depends on the distribution of the DIPs in a population. Until now, only Swiss population data have been reported; therefore in this study, we selected 10 DIP-STR markers that performed well in the Swiss population and investigated whether these markers were also useful among the southwest Chinese Han population. The allele frequencies were estimated based on 152 samples, and six of the ten DIP-STR makers had a relatively high probability of informative markers (I value), which indicated their potential usefulness in the southwest Chinese Han population. A comparative study of DIP-STR markers and autosomal STR markers demonstrated that DIP-STR markers detected minor DNA at a ratio of 1:1000, while autosomal STR markers often failed to genotype minor DNA because of strong background noises caused by large amount of major DNA. However, the discrimination power was not high enough using these six DIPs alone. Therefore, we suggest that development of a panel with more loci is imperative and that a panel combined with DIP-STR and SNP-STR markers may be a possible way to achieve better discrimination power.
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Affiliation(s)
- Yu Tan
- Department of Forensic Genetics, West China School of Basic Science and Forensic Medicine, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Li Wang
- Department of Forensic Genetics, West China School of Basic Science and Forensic Medicine, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Hui Wang
- Institute of Forensic Science, Chengdu Public Security Bureau,Chengdu, 610081, Sichuan, China
| | - Huan Tian
- Department of Forensic Genetics, West China School of Basic Science and Forensic Medicine, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Zhilong Li
- Department of Forensic Genetics, West China School of Basic Science and Forensic Medicine, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Qian Wang
- Department of Forensic Genetics, West China School of Basic Science and Forensic Medicine, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Hui Jian
- Department of Forensic Genetics, West China School of Basic Science and Forensic Medicine, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Shuqiang Cao
- Department of Forensic Genetics, West China School of Basic Science and Forensic Medicine, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Weibo Liang
- Department of Forensic Genetics, West China School of Basic Science and Forensic Medicine, Sichuan University, Chengdu, 610041, Sichuan, China.
| | - Lin Zhang
- Department of Forensic Genetics, West China School of Basic Science and Forensic Medicine, Sichuan University, Chengdu, 610041, Sichuan, China.
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35
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Zander J, Rothe J, Dapprich J, Nagy M. New application for haplotype-specific extraction: Separation of mitochondrial DNA mixtures. Forensic Sci Int Genet 2017; 29:242-249. [DOI: 10.1016/j.fsigen.2017.05.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 04/10/2017] [Accepted: 05/01/2017] [Indexed: 10/19/2022]
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36
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Khan K, Siddiqi MH, Abbas M, Almas M, Idrees M. Forensic applications of Y chromosomal properties. Leg Med (Tokyo) 2017; 26:86-91. [DOI: 10.1016/j.legalmed.2017.04.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 04/08/2017] [Accepted: 04/15/2017] [Indexed: 01/17/2023]
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37
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Adnan A, Ralf A, Rakha A, Kousouri N, Kayser M. Improving empirical evidence on differentiating closely related men with RM Y-STRs: A comprehensive pedigree study from Pakistan. Forensic Sci Int Genet 2016; 25:45-51. [DOI: 10.1016/j.fsigen.2016.07.005] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 06/07/2016] [Accepted: 07/07/2016] [Indexed: 11/17/2022]
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38
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Liu H, Li X, Mulero J, Carbonaro A, Short M, Ge J. A convenient guideline to determine if two Y-STR profiles are from the same lineage. Electrophoresis 2016; 37:1659-68. [DOI: 10.1002/elps.201500566] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Revised: 02/22/2016] [Accepted: 03/24/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Hai Liu
- The Institute of Forensic Science and Technology; Henan Provincial Public Security Bureau; Zhengzhou P. R. China
| | - Xiaoyang Li
- The Institute of Forensic Science and Technology; Henan Provincial Public Security Bureau; Zhengzhou P. R. China
| | - Julio Mulero
- Human Identification Division; Thermo Fisher Scientific; South San Francisco CA USA
| | - Andrea Carbonaro
- Human Identification Division; Thermo Fisher Scientific; South San Francisco CA USA
| | - Marc Short
- Human Identification Division; Thermo Fisher Scientific; South San Francisco CA USA
| | - Jianye Ge
- Human Identification Division; Thermo Fisher Scientific; South San Francisco CA USA
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Mautoni C, Astolphi RD, Mello RB, Soares-Vieira JA, Silva MS, Almeida Prado Oliveira Sousa ML, Bittencourt EA, Iwamura ESM. Stains of ejaculated pre and post-vasectomy: Purity and sufficient quantity of recovered DNA after 10 years of storage. FORENSIC SCIENCE INTERNATIONAL GENETICS SUPPLEMENT SERIES 2015. [DOI: 10.1016/j.fsigss.2015.09.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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40
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Forensic typing of short tandem repeat markers on the X and Y chromosomes. Forensic Sci Int Genet 2015; 18:140-51. [DOI: 10.1016/j.fsigen.2015.03.013] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 03/22/2015] [Accepted: 03/24/2015] [Indexed: 11/17/2022]
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41
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Purps J, Geppert M, Nagy M, Roewer L. Validation of a combined autosomal/Y-chromosomal STR approach for analyzing typical biological stains in sexual-assault cases. Forensic Sci Int Genet 2015; 19:238-242. [PMID: 26280567 DOI: 10.1016/j.fsigen.2015.08.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 07/23/2015] [Accepted: 08/05/2015] [Indexed: 11/26/2022]
Abstract
DNA testing is an established part of the investigation and prosecution of sexual assault. The primary purpose of DNA evidence is to identify a suspect and/or to demonstrate sexual contact. However, due to highly uneven proportions of female and male DNA in typical stains, routine autosomal analysis often fails to detect the DNA of the assailant. To evaluate the forensic efficiency of the combined application of autosomal and Y-chromosomal short tandem repeat (STR) markers, we present a large retrospective casework study of probative evidence collected in sexual-assault cases. We investigated up to 39 STR markers by testing combinations of the 16-locus NGMSElect kit with both the 23-locus PowerPlex Y23 and the 17-locus Yfiler kit. Using this dual approach we analyzed DNA extracts from 2077 biological stains collected in 287 cases over 30 months. To assess the outcome of the combined approach in comparison to stand-alone autosomal analysis we evaluated informative DNA profiles. Our investigation revealed that Y-STR analysis added up to 21% additional, highly informative (complete, single-source) profiles to the set of reportable autosomal STR profiles for typical stains collected in sexual-assault cases. Detection of multiple male contributors was approximately three times more likely with Y-chromosomal profiling than with autosomal STR profiling. In summary, 1/10 cases would have remained inconclusive (and could have been dismissed) if Y-STR analysis had been omitted from DNA profiling in sexual-assault cases.
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Affiliation(s)
- Josephine Purps
- Department Forensic Genetics, Institute of Legal Medicine and Forensic Sciences, Charité-Universitätsmedizin Berlin, Germany
| | - Maria Geppert
- Department Forensic Genetics, Institute of Legal Medicine and Forensic Sciences, Charité-Universitätsmedizin Berlin, Germany
| | - Marion Nagy
- Department Forensic Genetics, Institute of Legal Medicine and Forensic Sciences, Charité-Universitätsmedizin Berlin, Germany
| | - Lutz Roewer
- Department Forensic Genetics, Institute of Legal Medicine and Forensic Sciences, Charité-Universitätsmedizin Berlin, Germany.
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42
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McDonald A, Jones E, Lewis J, O'Rourke P. Y-STR analysis of digital and/or penile penetration cases with no detected spermatozoa. Forensic Sci Int Genet 2014; 15:84-9. [PMID: 25458926 DOI: 10.1016/j.fsigen.2014.10.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 10/15/2014] [Indexed: 11/29/2022]
Abstract
This forensic casework trial involved Yfiler(®) testing samples from 47 digital and/or penile penetration cases where the medical examination had occurred within 48h of the alleged incident and no spermatozoa had been detected following Sperm Elution(©). 30% of these cases yielded at least one Y-STR profile comprising three or more alleles per profile and 21% yielded at least one Y-STR profile of ten or more alleles per profile. This trial further investigated the persistence of male DNA in different case types, the location of samples submitted for testing and whether samples from different locations benefit from being combined prior to testing. The data supports the use of Y-STR profiling to provide scientific evidence to investigate whether the alleged sexual activity had occurred as well as to obtain probative evidence in spermatozoa negative penetration cases.
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Affiliation(s)
- Andrew McDonald
- Cellmark Forensic Services, Abingdon, England, United Kingdom.
| | - Emma Jones
- Cellmark Forensic Services, Abingdon, England, United Kingdom
| | - Jennie Lewis
- Cellmark Forensic Services, Abingdon, England, United Kingdom
| | - Paula O'Rourke
- Cellmark Forensic Services, Chorley, England, United Kingdom
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43
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Estimating Y-STR allelic drop-out rates and adjusting for interlocus balances. Forensic Sci Int Genet 2013; 7:327-36. [DOI: 10.1016/j.fsigen.2013.01.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2012] [Revised: 01/17/2013] [Accepted: 01/28/2013] [Indexed: 11/18/2022]
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44
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45
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He JD, Peng MS, Quang HH, Dang KP, Trieu AV, Wu SF, Jin JQ, Murphy RW, Yao YG, Zhang YP. Patrilineal perspective on the Austronesian diffusion in Mainland Southeast Asia. PLoS One 2012; 7:e36437. [PMID: 22586471 PMCID: PMC3346718 DOI: 10.1371/journal.pone.0036437] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2011] [Accepted: 04/02/2012] [Indexed: 01/22/2023] Open
Abstract
The Cham people are the major Austronesian speakers of Mainland Southeast Asia (MSEA) and the reconstruction of the Cham population history can provide insights into their diffusion. In this study, we analyzed non-recombining region of the Y chromosome markers of 177 unrelated males from four populations in MSEA, including 59 Cham, 76 Kinh, 25 Lao, and 17 Thai individuals. Incorporating published data from mitochondrial DNA (mtDNA), our results indicated that, in general, the Chams are an indigenous Southeast Asian population. The origin of the Cham people involves the genetic admixture of the Austronesian immigrants from Island Southeast Asia (ISEA) with the local populations in MSEA. Discordance between the overall patterns of Y chromosome and mtDNA in the Chams is evidenced by the presence of some Y chromosome lineages that prevail in South Asians. Our results suggest that male-mediated dispersals via the spread of religions and business trade might play an important role in shaping the patrilineal gene pool of the Cham people.
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Affiliation(s)
- Jun-Dong He
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
- School of Life Sciences, University of Science and Technology of China, Hefei, China
- KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming, China
| | - Min-Sheng Peng
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
- KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming, China
- Graduate University of the Chinese Academy of Sciences, Beijing, China
| | - Huy Ho Quang
- Department of Immunology, Hanoi Medical University, Hanoi, Vietnam
| | - Khoa Pham Dang
- Department of Immunology, Hanoi Medical University, Hanoi, Vietnam
| | - An Vu Trieu
- Department of Immunology, Hanoi Medical University, Hanoi, Vietnam
| | - Shi-Fang Wu
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - Jie-Qiong Jin
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - Robert W. Murphy
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
- Centre for Biodiversity and Conservation Biology, Royal Ontario Museum, Toronto, Canada
| | - Yong-Gang Yao
- Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - Ya-Ping Zhang
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
- KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming, China
- Laboratory for Conservation and Utilization of Bio-resource, Yunnan University, Kunming, China
- * E-mail:
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46
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Ballantyne KN, Keerl V, Wollstein A, Choi Y, Zuniga SB, Ralf A, Vermeulen M, de Knijff P, Kayser M. A new future of forensic Y-chromosome analysis: Rapidly mutating Y-STRs for differentiating male relatives and paternal lineages. Forensic Sci Int Genet 2012; 6:208-18. [DOI: 10.1016/j.fsigen.2011.04.017] [Citation(s) in RCA: 148] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2011] [Revised: 04/08/2011] [Accepted: 04/27/2011] [Indexed: 10/18/2022]
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47
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Huang D, Shi S, Zhu C, Yi S, Ma W, Wang H, Li H. Y-haplotype Screening of Local Patrilineages Followed by Autosomal STR Typing Can Detect Likely Perpetrators in Some Populations. J Forensic Sci 2011; 56:1340-2. [DOI: 10.1111/j.1556-4029.2011.01830.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Muro T, Iida R, Fujihara J, Yasuda T, Watanabe Y, Imamura S, Nakamura H, Kimura-Kataoka K, Yuasa I, Toga T, Takeshita H. Simultaneous determination of seven informative Y chromosome SNPs to differentiate East Asian, European, and African populations. Leg Med (Tokyo) 2011; 13:134-41. [DOI: 10.1016/j.legalmed.2011.01.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2010] [Revised: 01/04/2011] [Accepted: 01/04/2011] [Indexed: 11/27/2022]
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Weiler NEC, Matai AS, Sijen T. Extended PCR conditions to reduce drop-out frequencies in low template STR typing including unequal mixtures. Forensic Sci Int Genet 2011; 6:102-7. [PMID: 21454145 DOI: 10.1016/j.fsigen.2011.03.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Revised: 02/08/2011] [Accepted: 03/04/2011] [Indexed: 11/17/2022]
Abstract
Forensic laboratories employ various approaches to obtain short tandem repeat (STR) profiles from minimal traces (<100 pg DNA input). Most approaches aim to sensitize DNA profiling by increasing the amplification level by a higher cycle number or enlarging the amount of PCR products analyzed during capillary electrophoresis. These methods have limitations when unequal mixtures are genotyped, since the major component will be over-amplified or over-loaded. This study explores an alternative strategy for improved detection of the minor components in low template (LT) DNA typing that may be better suited for the detection of the minor component in mixtures. The strategy increases the PCR amplification efficiency by extending the primer annealing time several folds. When the AmpFℓSTR(®) Identifiler(®) amplification parameters are changed to an annealing time of 20 min during all 28 cycles, the drop-out frequency is reduced for both pristine DNA and single or multiple donor mock case work samples. In addition, increased peak heights and slightly more drop-ins are observed while the heterozygous peak balance remains similar as with the conventional Identifiler protocol. By this extended protocol, full DNA profiles were obtained from only 12 sperm heads (which corresponds to 36 pg of DNA) that were collected by laser micro dissection. Notwithstanding the improved detection, allele drop-outs do persist, albeit in lower frequencies. Thus a LT interpretation strategy such as deducing consensus profiles from multiple independent amplifications is appropriate. The use of extended PCR conditions represents a general approach to improve detection of unequal mixtures as shown using four commercially available kits (AmpFℓSTR(®) Identifiler, SEfiler Plus, NGM and Yfiler). The extended PCR protocol seems to amplify more of the molecules in LT samples during PCR, which results in a lower drop-out frequency.
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Affiliation(s)
- Natalie E C Weiler
- Netherlands Forensic Institute, Laan van Ypenburg 6, The Hague 2497GB, The Netherlands
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Vandewoestyne M, Deforce D. Laser capture microdissection in forensic research: a review. Int J Legal Med 2010; 124:513-21. [PMID: 20680318 PMCID: PMC2952761 DOI: 10.1007/s00414-010-0499-4] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2010] [Accepted: 07/20/2010] [Indexed: 11/30/2022]
Abstract
In forensic sciences, short tandem repeat (STR) analysis has become the prime tool for DNA-based identification of the donor(s) of biological stains and/or traces. Many traces, however, contain cells and, hence, DNA, from more than a single individual, giving rise to mixed genotypes and the subsequent difficulties in interpreting the results. An even more challenging situation occurs when cells of a victim are much more abundant than the cells of the perpetrator. Therefore, the forensic community seeks to improve cell-separation methods in order to generate single-donor cell populations from a mixed trace in order to facilitate DNA typing and identification. Laser capture microdissection (LCM) offers a valuable tool for precise separation of specific cells. This review summarises all possible forensic applications of LCM, gives an overview of the staining and detection options, including automated detection and retrieval of cells of interest, and reviews the DNA extraction protocols compatible with LCM of cells from forensic samples.
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Affiliation(s)
- Mado Vandewoestyne
- Laboratory of Pharmaceutical Biotechnology, Faculty of Pharmaceutical Sciences, Ghent University, Harelbekestraat 72, 9000, Ghent, Belgium
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