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Prakhun N, Muisuk K, Kampuansai J, Srikummool M, Pittayaporn P, Ruangchai S, Kutanan W, Tungpairojwong N. Genetic variability of 23 autosomal STRs in Austroasiatic-speaking populations from Thailand. Mol Genet Genomics 2024; 299:80. [PMID: 39172145 DOI: 10.1007/s00438-024-02175-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 08/02/2024] [Indexed: 08/23/2024]
Abstract
Austroasiatic (AA) speakers constitute around 4% of the population of Thailand, while the majority (89.4%) speak Kra-Dai (KD) languages. Previous forensic and population genetic studies in various Thai populations have employed a limited number of short tandem repeats (STRs). This study aims to expand the investigation of the genetic makeup of AA populations in Thailand and their relationship to KD populations using a larger number of autosomal STRs with the VeriFiler™ Plus PCR Amplification Kit. We generated 593 new genotypes from AA-speaking groups and combined them with previously reported data from AA and KD groups. A total of 1,129 genotypes across 23 STR loci were used to construct the largest allelic frequency profile for Thai and Lao populations. However, several loci deviated from Hardy-Weinberg equilibrium, likely due to the reduced genetic diversity in some highland populations, which should be considered in forensic investigations. Beyond forensic applications, our findings reveal genetic differences between AA-speaking groups in Northern and Northeastern Thailand. The AA groups from Northeastern Thailand exhibit greater genetic homogeneity and diversity, likely due to population interactions. In contrast, reduced diversity and increased heterogeneity in AA groups from Northern Thailand are possibly driven by genetic drift and cultural and geographic isolation. In conclusion, we emphasize the usefulness of increasing the number of autosomal STRs in forensic and anthropological genetic studies. Additional Y-STR and X-STR data from various AA-speaking groups in Thailand would further enhance and strengthen forensic STR databases in the region.
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Grants
- the Institute of Suvarnabhumi Studies, Thailand Academy of Social Sciences, Humanities and Arts (TASSHA), Ministry of Higher Education, Science, Research, and Innovation the Institute of Suvarnabhumi Studies, Thailand Academy of Social Sciences, Humanities and Arts (TASSHA), Ministry of Higher Education, Science, Research, and Innovation
- R2566C051 the Global and Frontier Research University Fund, Naresuan University
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Affiliation(s)
- Nonglak Prakhun
- Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Kanha Muisuk
- Department of Forensic Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Jatupol Kampuansai
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Metawee Srikummool
- Department of Biochemistry, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Pittayawat Pittayaporn
- Department of Linguistics & Center of Excellence in Southeast Asian Linguistics, Faculty of Arts, Chulalongkorn University, Bangkok, Thailand
| | - Sukhum Ruangchai
- Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Wibhu Kutanan
- Department of Biology, Faculty of Science, Naresuan University, Phitsanulok, Thailand.
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Srithawong S, Muisuk K, Prakhun N, Tungpairojwong N, Kutanan W. Forensic efficiency and genetic polymorphisms of 12 X-chromosomal STR loci in Northeastern Thai populations. Mol Genet Genomics 2024; 299:42. [PMID: 38568251 DOI: 10.1007/s00438-024-02134-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Accepted: 03/07/2024] [Indexed: 04/05/2024]
Abstract
Northeastern Thailand comprises one-third of the country and is home to various populations, with Lao Isan constituting the majority, while others are considered minority groups. Previous studies on forensic short tandem repeats (STRs) in Thailand predominantly focused on autosomal STRs but there was a paucity of X-STRs, exclusively reported from the North and Central regions of the country. In this study, we have newly established a 12 X-STRs from a total of 896 samples from Northeastern Thailand, encompassing Lao Isan as the major group in the region, alongside nine minor populations (Khmer, Mon, Nyahkur, Bru, Kuy, Phutai, Kalueang, Nyaw, and Saek). Across all ten populations, the combined powers of discrimination in both genders were high and the combined mean exclusion chance (MEC) indices calculated for deficiency, normal trio and duo cases were also high (> 0.99999). DXS10148 emerged as the most informative marker, while DXS7423 was identified as the least informative. Genetic comparison based on X-STRs frequency supported genetic distinction of cerain minor groups such as Kuy, Saek and Nyahkur from other northeastern Thai groups as well as genetic differences according to the geographic region of Thai groups (Northeast, North and Central). In sum, the overall results on population genetics are in agreement with earlier reports on other genetic systems, indicating the informativeness of X-STRs for use in anthropological genetics studies. From a forensic perspective, despite the limitations of small sample sizes for minority groups, the present results contribute to filling the gap in the reference X-STRs database of the major group Lao Isan, providing valuable frequency data for forensic applications in Thailand and neighboring countries.
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Affiliation(s)
- Suparat Srithawong
- Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Kanha Muisuk
- Department of Forensic Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Nonglak Prakhun
- Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | | | - Wibhu Kutanan
- Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand.
- Department of Biology, Faculty of Science, Naresuan University, Pitsanulok, Thailand.
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Than KZ, Muisuk K, Woravatin W, Suwannapoom C, Srikummool M, Srithawong S, Lorphengsy S, Kutanan W. Genetic Structure and Forensic Utility of 23 Autosomal STRs of the Ethnic Lao Groups From Laos and Thailand. Front Genet 2022; 13:954586. [PMID: 35873476 PMCID: PMC9300924 DOI: 10.3389/fgene.2022.954586] [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: 05/27/2022] [Accepted: 06/20/2022] [Indexed: 11/30/2022] Open
Abstract
The Lao Isan and Laotian are the major groups in the area of present-day northeastern Thailand and Laos, respectively. Several previous genetic and forensic studies indicated an admixed genetic structure of Lao Isan with the local Austroasiatic speaking groups, e.g. Khmer, whereas there is a paucity of reporting Laotian’s forensic short tandem repeats (STRs). Here, we newly generated 451 genotypes of seven Lao Isan and three Laotian populations (two Lao Lum and one Lao Thoeng) using 23 autosomal STRs embedded in VerifilerTM plus PCR Amplification kit. We reported allelic frequency and forensic parameters in different dataset: combined ethnic Lao groups, combined Lao Isan populations and combined Laotians. Overall, the forensic parameter results indicate that this set of STRs is suitable for forensic investigation. The anthropological results revealed the genetic homogeneity of Tai-Kadai speaking Lao groups from Thailand and Laos, consistent with previous studies, while the Austroasiatic speaking groups from southern Laos showed genetic relatedness to both Lao Isan and Khmer. In sum, STRs allelic frequency results can provide the genetic backgrounds of populations which is useful for anthropological research and also strengthens the regional forensic database in both countries.
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Affiliation(s)
- Khaing Zin Than
- Biological Science Program, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Kanha Muisuk
- Department of Forensic Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Wipada Woravatin
- Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | | | - Metawee Srikummool
- Department of Biochemistry, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Suparat Srithawong
- Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Sengvilay Lorphengsy
- The Biotechnology and Ecology Institute Ministry of Science and Technology, Vientiane, Laos
| | - Wibhu Kutanan
- Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
- *Correspondence: Wibhu Kutanan,
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Forensic and genetic characterizations of diverse southern Thai populations based on 15 autosomal STRs. Sci Rep 2022; 12:655. [PMID: 35027632 PMCID: PMC8758738 DOI: 10.1038/s41598-021-04646-1] [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: 09/21/2021] [Accepted: 12/23/2021] [Indexed: 11/08/2022] Open
Abstract
Southern Thailand is home to various populations; the Moklen, Moken and Urak Lawoi’ sea nomads and Maniq negrito are the minority, while the southern Thai groups (Buddhist and Muslim) are the majority. Although previous studies have generated forensic STR dataset for major groups, such data of the southern Thai minority have not been included; here we generated a regional forensic database of southern Thailand. We newly genotyped common 15 autosomal STRs in 184 unrelated southern Thais, including all minorities and majorities. When combined with previously published data of major southern Thais, this provides a total of 334 southern Thai samples. The forensic parameter results show appropriate values for personal identification and paternity testing; the probability of excluding paternity is 0.99999622, and the combined discrimination power is 0.999999999999999. Probably driven by genetic drift and/or isolation with small census size, we found genetic distinction of the Maniq and sea nomads from the major groups, which were closer to the Malay and central Thais than the other Thai groups. The allelic frequency results can strength the regional forensic database in southern Thailand and also provide useful information for anthropological perspective.
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Tran LH, Chu PTM, Nguyen TH, La HV, Nguyen HTH, Tran HT, Nguyen HM, Hoang H, Chu HH. Genetic structure and population connection of two Bouyei populations in northern Vietnam based on short tandem repeat analysis. Am J Hum Biol 2021; 34:e23702. [PMID: 34784439 DOI: 10.1002/ajhb.23702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 10/05/2021] [Accepted: 11/01/2021] [Indexed: 11/07/2022] Open
Abstract
OBJECTIVES Genetic characteristics were investigated based on short tandem repeat (STR) data to assess the relationship between two Vietnamese Bouyei populations in Vietnam. METHODS We collected hair and buccal swab samples from two separate Bouyei populations in the mountainous region of Northern Vietnam, which are the Bo Y in Ha Giang Province and the Tu Di in Lao Cai Province. The study included data of 23 autosomal and 27 Y-chromosome STRs loci of 96 unrelated participants from a total Vietnamese Bouyei population of under 3300 individuals. RESULTS The results showed that these STR markers are valuable for differentiation of individuals and human genetic studies in Vietnamese Bouyei populations. Genetic analysis indicated that Tu Di and Bo Y people were from the same Bouyei population in China. CONCLUSIONS The results supported the official historical records of the region and the classification of the Vietnamese government. Furthermore, the genetic data provided in this study will be helpful in investigating the genetic genealogy evolution and settlement or migration patterns of the Bouyei populations in Vietnam.
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Affiliation(s)
- Linh Huyen Tran
- National Key Laboratory of Gene Technology, Institute of Biotechnology (IBT), Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | | | - Trang Hong Nguyen
- National Key Laboratory of Gene Technology, Institute of Biotechnology (IBT), Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Hong Viet La
- Hanoi Pedagogical University 2, Vinh Phuc, Vietnam
| | - Hanh Thi Hong Nguyen
- National Key Laboratory of Gene Technology, Institute of Biotechnology (IBT), Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Hoai Thu Tran
- National Key Laboratory of Gene Technology, Institute of Biotechnology (IBT), Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | | | - Ha Hoang
- National Key Laboratory of Gene Technology, Institute of Biotechnology (IBT), Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam.,Centre of DNA Identification, IBT, VAST, Hanoi, Vietnam
| | - Hoang Ha Chu
- National Key Laboratory of Gene Technology, Institute of Biotechnology (IBT), Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam.,Graduate University of Science and Technology, VAST, Hanoi, Vietnam
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Kutanan W, Liu D, Kampuansai J, Srikummool M, Srithawong S, Shoocongdej R, Sangkhano S, Ruangchai S, Pittayaporn P, Arias L, Stoneking M. Reconstructing the Human Genetic History of Mainland Southeast Asia: Insights from Genome-Wide Data from Thailand and Laos. Mol Biol Evol 2021; 38:3459-3477. [PMID: 33905512 PMCID: PMC8321548 DOI: 10.1093/molbev/msab124] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Thailand and Laos, located in the center of Mainland Southeast Asia (MSEA), harbor diverse ethnolinguistic groups encompassing all five language families of MSEA: Tai-Kadai (TK), Austroasiatic (AA), Sino-Tibetan (ST), Hmong-Mien (HM), and Austronesian (AN). Previous genetic studies of Thai/Lao populations have focused almost exclusively on uniparental markers and there is a paucity of genome-wide studies. We therefore generated genome-wide SNP data for 33 ethnolinguistic groups, belonging to the five MSEA language families from Thailand and Laos, and analyzed these together with data from modern Asian populations and SEA ancient samples. Overall, we find genetic structure according to language family, albeit with heterogeneity in the AA-, HM-, and ST-speaking groups, and in the hill tribes, that reflects both population interactions and genetic drift. For the TK speaking groups, we find localized genetic structure that is driven by different levels of interaction with other groups in the same geographic region. Several Thai groups exhibit admixture from South Asia, which we date to ∼600-1000 years ago, corresponding to a time of intensive international trade networks that had a major cultural impact on Thailand. An AN group from Southern Thailand shows both South Asian admixture as well as overall affinities with AA-speaking groups in the region, suggesting an impact of cultural diffusion. Overall, we provide the first detailed insights into the genetic profiles of Thai/Lao ethnolinguistic groups, which should be helpful for reconstructing human genetic history in MSEA and selecting populations for participation in ongoing whole genome sequence and biomedical studies.
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Affiliation(s)
- Wibhu Kutanan
- Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Dang Liu
- Department of Evolutionary Genetics, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
| | - Jatupol Kampuansai
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand.,Research Center in Bioresources for Agriculture, Industry and Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Metawee Srikummool
- Department of Biochemistry, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Suparat Srithawong
- Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Rasmi Shoocongdej
- Department of Archaeology, Faculty of Archaeology, Silpakorn University, Bangkok, Thailand
| | - Sukrit Sangkhano
- School of Public Health, Walailak University, Nakhon Si Thammarat, Thailand
| | - Sukhum Ruangchai
- Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Pittayawat Pittayaporn
- Department of Linguistics and Southeast Asian Linguistics Research Unit, Faculty of Arts, Chulalongkorn University, Bangkok, Thailand
| | - Leonardo Arias
- Department of Evolutionary Genetics, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany.,Centre for Linguistics, Faculty of Humanities, Leiden University, Leiden, The Netherlands
| | - Mark Stoneking
- Department of Evolutionary Genetics, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
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Mawan A, Prakhun N, Muisuk K, Srithawong S, Srikummool M, Kampuansai J, Shoocongdej R, Inta A, Ruangchai S, Kutanan W. Autosomal Microsatellite Investigation Reveals Multiple Genetic Components of the Highlanders from Thailand. Genes (Basel) 2021; 12:383. [PMID: 33800398 PMCID: PMC8000784 DOI: 10.3390/genes12030383] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/02/2021] [Accepted: 03/03/2021] [Indexed: 11/18/2022] Open
Abstract
The hill tribes of northern Thailand comprise nine officially recognized groups: the Austroasiatic-speaking (AA) Khmu, Htin and Lawa; the Hmong-Mien-speaking (HM) IuMien and Hmong; and the Sino-Tibetan-speaking (ST) Akha, Karen, Lahu and Lisu. Except the Lawa, the rest of the hill tribes migrated into their present habitats only very recently. The Thai hill tribes were of much interest to research groups focusing on study of cultural and genetic variation because of their unique languages and cultures. So far, there have been several genetic studies of the Thai hill tribes. However, complete forensic microsatellite database of the Thai hill tribes is still lacking. To construct such database, we newly generated 654 genotypes of 15 microsatellites commonly used in forensic investigation that belong to all the nine hill tribes and also non-hill tribe highlanders from northern Thailand. We also combined 329 genotypes from previous studies of northern Thai populations bringing to a total of 983 genotypes, which were then subjected to genetic structure and population relationships analyses. Our overall results indicated homogenous genetic structure within the HM- and Tai-Kadai (TK)-speaking groups, large genetic divergence of the HM-speaking Hmong but not IuMien from the other Thai groups, and genetic heterogeneity within the ST- and AA-speaking groups, reflecting different population interactions and admixtures. In addition to establishing genetic relationships within and among these populations, our finding, which provides a more complete picture of the forensic microsatellite database of the multiple Thai highland dwellers, would not only serve to expand and strengthen forensic investigation in Thailand, but would also benefit its neighboring countries of Laos and Myanmar, from which many of the Thai hill tribes originated and where large populations of these ethnic groups still reside.
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Affiliation(s)
- Aornpriya Mawan
- Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand; (A.M.); (N.P.); (S.S.)
| | - Nonglak Prakhun
- Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand; (A.M.); (N.P.); (S.S.)
| | - Kanha Muisuk
- Department of Forensic Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand;
| | - Suparat Srithawong
- Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand; (A.M.); (N.P.); (S.S.)
| | - Metawee Srikummool
- Department of Biochemistry, Faculty of Medical Science, Naresuan University, Phitsanulok 65000, Thailand;
| | - Jatupol Kampuansai
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50202, Thailand; (J.K.); (A.I.)
- Research Center in Bioresources for Agriculture, Industry and Medicine, Chiang Mai University, Chiang Mai 50202, Thailand
| | - Rasmi Shoocongdej
- Department of Archaeology, Faculty of Archaeology, Silpakorn University, Bangkok 10200, Thailand;
| | - Angkhana Inta
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50202, Thailand; (J.K.); (A.I.)
- Research Center in Bioresources for Agriculture, Industry and Medicine, Chiang Mai University, Chiang Mai 50202, Thailand
| | - Sukhum Ruangchai
- Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand;
| | - Wibhu Kutanan
- Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand; (A.M.); (N.P.); (S.S.)
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Close genetic relationship between central Thai and Mon people in Thailand revealed by autosomal microsatellites. Int J Legal Med 2020; 135:445-448. [PMID: 32281021 DOI: 10.1007/s00414-020-02290-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 03/30/2020] [Indexed: 10/24/2022]
Abstract
Central Thailand is home to diverse populations with the central Thai constituting the major group, while the Mon, who migrated from southern Myanmar, are sparsely distributed within the region. A total of 338 individuals of eight central Thai (246 samples) and three Mon populations (92 samples) were newly genotyped. When combined with our previously published Mon data, this provides a total of 139 Mon samples. We found genetic similarity between the central Thai and Mon and weak sub-structuring among Thais from central, northern, and northeastern Thailand. The forensic parameter results show high discrimination values which are appropriate for forensic personal identification and paternity testing in both the central Thai and Mon; the probabilities of excluding paternity are 0.999999112 and 0.999999031, respectively, and the combined discrimination power is 0.9999999999999999999999 in both groups. This regional allelic frequency on forensic microsatellites may serve as a useful reference for further forensic investigations in both Thailand and Myanmar.
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