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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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Khacha-Ananda S, Mahawong P. Genetic analysis of 12 X-short tandem repeats loci in a northern Thai population. MEDICINE, SCIENCE, AND THE LAW 2021; 61:34-43. [PMID: 33045921 DOI: 10.1177/0025802420965000] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Short tandem repeats (STRs) are widely used as DNA markers in paternity testing and criminal investigations because of their high genetic polymorphism among individuals in population. However, many factors influence genetic variations of STRs. Therefore, understanding STR information within individual populations could provide database and scientifically reliable STR genotyping for forensic genetic purposes. We aimed to examine allele frequencies of X-STRs, including some forensic parameters, in a northern Thai population. A retrospective descriptive study was conducted by collecting X-STR data from unrelated individuals living in a northern region of Thailand. The allele frequency and forensic parameters - for example polymorphism information content (PIC), power of discrimination in females and males (PDf and PDm), mean exclusion chance (MEC) and haplotype frequency - were calculated. The Hardy-Weinberg equilibrium was analysed. A total of 132 alleles were observed, with corresponding allele frequency ranging from 0.0064 to 0.4904. The PIC of all loci was >0.6, representing high genetic polymorphism, except DXS8378 and DXS7423. Notably, DXS10135 was the most diverse loci with the highest PD and MEC, while DXS7423 was the least polymorphic marker with the lowest PD and MEC. The highest haplotype diversity in male data was on linkage group III (DXS10101-DXS10103-HPRTB) by 0.9895. The genetic distance analysis demonstrated that the northern Thai population had a close relationship with Taiwanese (DA = 0.023). There are no significant deviations among the Hardy-Weinberg equilibrium except DXS10148. This study has established a northern Thai X-STRs reference database to be used as a tool for forensic genetic purposes.
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Affiliation(s)
- Supakit Khacha-Ananda
- Department of Forensic Medicine, Faculty of Medicine, Chiang Mai University, Thailand
| | - Phatcharin Mahawong
- Department of Forensic Medicine, Faculty of Medicine, Chiang Mai University, Thailand
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Xing J, Adnan A, Rakha A, Kasim K, Noor A, Xuan J, Zhang X, Yao J, McNevin D, Wang B. Genetic analysis of 12 X-STRs for forensic purposes in Liaoning Manchu population from China. Gene 2018; 683:153-158. [PMID: 30326331 DOI: 10.1016/j.gene.2018.10.020] [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: 06/14/2018] [Revised: 10/04/2018] [Accepted: 10/09/2018] [Indexed: 11/29/2022]
Abstract
X-chromosomal short tandem repeats (X-STRs) have been widely used in forensic practice involving complicated cases of kinship and also play an increasingly important role in population genetics. X-STRs have been studied in regional populations of China but there is a lack of data for the Manchu population. In this study, we have investigated the forensic genetic properties of 12 X-STRs in the Investigator Argus X-12 Kit (QIAGEN, Hilden, Germany) in 772 Manchu (male = 514, female = 258) individuals from the Xiuyan and Huanren Manchu autonomous counties of Liaoning province. We observed a total of 166 alleles at 12 X-STR loci with allele frequencies ranging from 0.001295to 0.615285. The most polymorphic locus was DXS10135 with 24 alleles while DXS7423 was the least polymorphic locus with 5 alleles. We found significant linkage disequilibrium (LD) between the following pairs of markers for males: DXS10103/DXS10101, DXS10135/DXS10146, DXS10101/DXS10148, DXS10135/DXS10148, DXS7423/DXS10148 and DXS10079/DXS10148. For females, LD was only observed for DXS10103/DXS10101. The combined power of discrimination was 0.9999999979699 for males and 0.999999999999998 for females. The numbers of observed haplotypes in Manchu males were 310, 172, 182 and 172 in four linkage groups; LG1, LG2, LG3 and LG4, respectively, however, these linkage groups did not form stable haplotypes as indicated by linkage equilibrium (LE) of STRs within the groups and significant LD between the groups. This study represents an extensive report on X-STR marker variation in the Manchu population for forensic applications and population genetic studies.
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Affiliation(s)
- Jiaxin Xing
- Department of Forensic Genetics, School of Forensic Medicine, China Medical University Shenyang, Liaoning 110122, China
| | - Atif Adnan
- Department of Forensic Genetics, School of Forensic Medicine, China Medical University Shenyang, Liaoning 110122, China.
| | - Allah Rakha
- Department of Forensic Science, University of Health Sciences, Lahore 54000, Pakistan
| | - Kadirya Kasim
- Department of Forensic Genetics, School of Forensic Medicine, China Medical University Shenyang, Liaoning 110122, China
| | - Anam Noor
- Department of Forensic Science, University of Health Sciences, Lahore 54000, Pakistan
| | - Jinfeng Xuan
- Department of Forensic Genetics, School of Forensic Medicine, China Medical University Shenyang, Liaoning 110122, China
| | - Xicen Zhang
- Department of Forensic Genetics, School of Forensic Medicine, China Medical University Shenyang, Liaoning 110122, China
| | - Jun Yao
- Department of Forensic Genetics, School of Forensic Medicine, China Medical University Shenyang, Liaoning 110122, China
| | - Dennis McNevin
- Centre for Forensic Science, School of Mathematical and Physical Sciences, University of Technology Sydney, Australia
| | - Baojie Wang
- Department of Forensic Genetics, School of Forensic Medicine, China Medical University Shenyang, Liaoning 110122, China.
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Investigation of 12 X-STR loci in Mongolian and Eastern Han populations of China with comparison to other populations. Sci Rep 2018. [PMID: 29523825 PMCID: PMC5844901 DOI: 10.1038/s41598-018-22665-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Due to the unique inheritance pattern, X-chromosomal short tandem repeats (X-STRs) have several advantages in complex kinship cases, such as deficiency cases or grandparent-grandchild and half-sisters testing. In our study, 541 unrelated individuals gathered from Mongolian and Eastern Chinese Han populations were successfully genotyped using the Investigator Argus X-12 kit. We calculated allele/haplotype frequencies and other forensic parameters of the two populations and further explored their genetic distance with already published Chinese populations and six global populations. Our results showed that the 12 X-STR markers were highly informative in the two populations when compared with nine other Chinese populations: significant differences were found at several loci. Geographically neighboring populations or different ethnic groups within the same area appeared to have closer evolutionary relationships. We also analyzed population genetic structure by performing clustering with the STRUCTURE program and Principal Coordinate Analysis (PCoA), and we found that the Chinese and other populations enrolled in this study could be distinguished. Furthermore, Mongolian males were distinguishable from the other studied males by a moderate genetic distance. Our study also expanded the X-STR database, which could facilitate the appropriate application of the 12 X-STR markers in the forensic field in China.
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