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Karafet TM, Osipova LP, Savina OV, Hallmark B, Hammer MF. Siberian genetic diversity reveals complex origins of the Samoyedic-speaking populations. Am J Hum Biol 2018; 30:e23194. [PMID: 30408262 DOI: 10.1002/ajhb.23194] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Revised: 08/26/2018] [Accepted: 09/23/2018] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVES We examined autosomal genome-wide SNPs and Y-chromosome data from 15 Siberian and 12 reference populations to study the affinities of Siberian populations, and to address hypotheses about the origin of the Samoyed peoples. METHODS Samples were genotyped for 567 096 autosomal SNPs and 147 Y-chromosome polymorphic sites. For several analyses, we used 281 093 SNPs from the intersection of our data with publicly available ancient Siberian samples. To examine genetic relatedness among populations, we applied PCA, FST , TreeMix, and ADMIXTURE analyses. To explore the potential effect of demography and evolutionary processes, the distribution of ROH and IBD sharing within population were studied. RESULTS Analyses of autosomal and Y-chromosome data reveal high differentiation of the Siberian groups. The Siberian populations have a large proportion of their genome in ROH and IBD segments. Several populations (ie, Nganasans, Evenks, Yukagirs, and Koryaks) do not appear to have experienced admixture with other Siberian populations (ie, producing only positive f3), while for the other tested populations the composition of mixing sources always included Nganasans or Evenks. The Nganasans from the Taymyr Peninsula demonstrate the greatest level of shared shorter ROH and IBD with nearly all other Siberian populations. CONCLUSIONS Autosomal SNP and Y-chromosome data demonstrate that Samoyedic populations differ significantly in their genetic composition. Genetic relationship is observed only between Forest and Tundra Nentsi. Selkups are affiliated with the Kets from the Yenisey River, while the Nganasans are separated from their linguistic neighbors, showing closer affinities with the Evenks and Yukagirs.
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Affiliation(s)
- Tatiana M Karafet
- ARL Division of Biotechnology, University of Arizona, Tucson, Arizona
| | - Ludmila P Osipova
- Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia.,Novosibirsk State University, Novosibirsk, Russia
| | - Olga V Savina
- ARL Division of Biotechnology, University of Arizona, Tucson, Arizona
| | - Brian Hallmark
- Interdisciplinary Program in Statistics, University of Arizona, Tucson, Arizona
| | - Michael F Hammer
- ARL Division of Biotechnology, University of Arizona, Tucson, Arizona.,Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, Arizona
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Hu P, Hu B, Qin YH, Lu L, Li ZQ, Tao LQ, Pei Q, Chen J. Serum lipid abnormalities are not associated with apoB 3' VNTR polymorphism in nephrotic children. GENETICS AND MOLECULAR RESEARCH 2013; 12:765-74. [PMID: 23546960 DOI: 10.4238/2013.march.13.5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Apolipoprotein B (apoB) gene 3' variable number of tandem repeat (VNTR) is highly variable, and therefore can be an informative marker for associative analysis of lipid metabolism. This is the first report focusing on a possible association of apoB VNTR polymorphism with nephrotic hyperlipidemia. Genomic DNA was extracted from 500 children with primary nephrotic syndrome (PNS) and 500 healthy controls. The apoB genotype was determined by PCR analysis. Allele size distribution followed a unimodal curve, with the main peak at the hypervariable element 35 (HVE35); the most prevalent genotype was HVE35/35 in both control and PNS children. The genotype and allele distributions of apoB variants in PNS children were not significantly different from controls. There was significant variation in serum lipid profiles among different genotypes in control children. Individuals with the long (L) allele exhibited significantly higher total cholesterol, low-density lipoprotein cholesterol (LDL-C) and apoB levels than those with the medium (M) or short (S) allele; consequently, M/L carriers had significantly higher total cholesterol, LDL-C and apoB concentrations than did S/S, S/M, S/L, or M/M carriers. However, in PNS children, no significant differences in serum lipid levels were observed among individuals with different genotypes and alleles of apoB 3' VNTR. We conclude that hyperlipidemia in nephrotic children is not associated with apoB 3' VNTR polymorphism.
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Affiliation(s)
- P Hu
- Department of Pediatrics, First Affiliated Hospital, Anhui Medical University, Hefei, China.
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Khrunin AV, Khokhrin DV, Filippova IN, Esko T, Nelis M, Bebyakova NA, Bolotova NL, Klovins J, Nikitina-Zake L, Rehnström K, Ripatti S, Schreiber S, Franke A, Macek M, Krulišová V, Lubinski J, Metspalu A, Limborska SA. A genome-wide analysis of populations from European Russia reveals a new pole of genetic diversity in northern Europe. PLoS One 2013; 8:e58552. [PMID: 23505534 PMCID: PMC3591355 DOI: 10.1371/journal.pone.0058552] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Accepted: 02/06/2013] [Indexed: 11/18/2022] Open
Abstract
Several studies examined the fine-scale structure of human genetic variation in Europe. However, the European sets analyzed represent mainly northern, western, central, and southern Europe. Here, we report an analysis of approximately 166,000 single nucleotide polymorphisms in populations from eastern (northeastern) Europe: four Russian populations from European Russia, and three populations from the northernmost Finno-Ugric ethnicities (Veps and two contrast groups of Komi people). These were compared with several reference European samples, including Finns, Estonians, Latvians, Poles, Czechs, Germans, and Italians. The results obtained demonstrated genetic heterogeneity of populations living in the region studied. Russians from the central part of European Russia (Tver, Murom, and Kursk) exhibited similarities with populations from central-eastern Europe, and were distant from Russian sample from the northern Russia (Mezen district, Archangelsk region). Komi samples, especially Izhemski Komi, were significantly different from all other populations studied. These can be considered as a second pole of genetic diversity in northern Europe (in addition to the pole, occupied by Finns), as they had a distinct ancestry component. Russians from Mezen and the Finnic-speaking Veps were positioned between the two poles, but differed from each other in the proportions of Komi and Finnic ancestries. In general, our data provides a more complete genetic map of Europe accounting for the diversity in its most eastern (northeastern) populations.
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Affiliation(s)
- Andrey V Khrunin
- Department of Molecular Bases of Human Genetics, Institute of Molecular Genetics, Russian Academy of Sciences, Moscow, Russia.
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Khrunin AV, Firsov SY, Limborska SA. Polymorphisms of DNA repair genes ERCC2 and XRCC1 in populations of Russia. RUSS J GENET+ 2011. [DOI: 10.1134/s1022795411110081] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Limborska SA, Khrunin AV, Flegontova OV, Tasitz VA, Verbenko DA. Specificity of genetic diversity in D1S80 revealed by SNP-VNTR haplotyping. Ann Hum Biol 2011; 38:564-9. [PMID: 21834750 DOI: 10.3109/03014460.2011.568003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
BACKGROUND The allele frequency patterns of the D1S80 variable number tandem repeat (VNTR) locus have been shown to be multimodal in many different human populations. AIM To explore the complex allele distribution of the D1S80 polymorphic locus in different populations comparing the derived single nucleotide polymorphism (SNP) rs16824398-D1S80 haplotype frequencies in samples of European (Russians), Asian (Yakuts) and sub-Saharan African origin. SUBJECTS AND METHODS The D1S80 locus together with its 5'-flanking region including SNP rs16824398 was amplified using allele-specific polymerase chain reaction (PCR). RESULTS Haplotype phase determination sub-divided the total D1S80 allele spectrum into two allele sets marked by the corresponding SNP rs16824398 alleles. In non-African samples, the most frequent D1S80 alleles had 24 and 18 repeats that were associated with different SNP backgrounds (T and G alleles, respectively). Both combinations also occurred in Africans, but these samples exhibited an expanded spectrum of VNTR alleles on both SNP backgrounds. CONCLUSIONS The sub-division of the D1S80 allele spectrum shape on the linked SNP background is indicative of populations of the main human groups. The reported differences in D1S80 allele spectra between populations of different ethnic origins can be explained by the ratios of chromosomes with T and G alleles.
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Affiliation(s)
- Svetlana A Limborska
- Institute of Molecular Genetics, Russian Academy of Sciences, Kurchatov sq., 2 Moscow 123182, Russia
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Mirabal S, Regueiro M, Cadenas AM, Cavalli-Sforza LL, Underhill PA, Verbenko DA, Limborska SA, Herrera RJ. Y-chromosome distribution within the geo-linguistic landscape of northwestern Russia. Eur J Hum Genet 2009; 17:1260-73. [PMID: 19259129 PMCID: PMC2986641 DOI: 10.1038/ejhg.2009.6] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2008] [Revised: 01/09/2009] [Accepted: 01/14/2009] [Indexed: 11/09/2022] Open
Abstract
Populations of northeastern Europe and the Uralic mountain range are found in close geographic proximity, but they have been subject to different demographic histories. The current study attempts to better understand the genetic paternal relationships of ethnic groups residing in these regions. We have performed high-resolution haplotyping of 236 Y-chromosomes from populations in northwestern Russia and the Uralic mountains, and compared them to relevant previously published data. Haplotype variation and age estimation analyses using 15 Y-STR loci were conducted for samples within the N1b, N1c1 and R1a1 single-nucleotide polymorphism backgrounds. Our results suggest that although most genetic relationships throughout Eurasia are dependent on geographic proximity, members of the Uralic and Slavic linguistic families and subfamilies, yield significant correlations at both levels of comparison making it difficult to denote either linguistics or geographic proximity as the basis for their genetic substrata. Expansion times for haplogroup R1a1 date approximately to 18,000 YBP, and age estimates along with Network topology of populations found at opposite poles of its range (Eastern Europe and South Asia) indicate that two separate haplotypic foci exist within this haplogroup. Data based on haplogroup N1b challenge earlier findings and suggest that the mutation may have occurred in the Uralic range rather than in Siberia and much earlier than has been proposed (12.9+/-4.1 instead of 5.2+/-2.7 kya). In addition, age and variance estimates for haplogroup N1c1 suggest that populations from the western Urals may have been genetically influenced by a dispersal from northeastern Europe (eg, eastern Slavs) rather than the converse.
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Affiliation(s)
- Sheyla Mirabal
- Department of Molecular and Human Genetics, College of Medicine, Florida International University, Miami, FL, USA
| | - Maria Regueiro
- Department of Molecular and Human Genetics, College of Medicine, Florida International University, Miami, FL, USA
| | - Alicia M Cadenas
- Department of Molecular and Human Genetics, College of Medicine, Florida International University, Miami, FL, USA
| | | | | | - Dmitry A Verbenko
- Institute of Molecular Genetics, Russian Academy of Sciences, Moscow, Russia
| | | | - Rene J Herrera
- Department of Molecular and Human Genetics, College of Medicine, Florida International University, Miami, FL, USA
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Flegontova OV, Khrunin AV, Lylova OI, Tarskaia LA, Spitsyn VA, Mikulich AI, Limborska SA. Haplotype frequencies at the DRD2 locus in populations of the East European Plain. BMC Genet 2009; 10:62. [PMID: 19793394 PMCID: PMC2765450 DOI: 10.1186/1471-2156-10-62] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2009] [Accepted: 09/30/2009] [Indexed: 11/18/2022] Open
Abstract
Background It was demonstrated previously that the three-locus RFLP haplotype, TaqI B-TaqI D-TaqI A (B-D-A), at the DRD2 locus constitutes a powerful genetic marker and probably reflects the most ancient dispersal of anatomically modern humans. Results We investigated TaqI B, BclI, MboI, TaqI D, and TaqI A RFLPs in 17 contemporary populations of the East European Plain and Siberia. Most of these populations belong to the Indo-European or Uralic language families. We identified three common haplotypes, which occurred in more than 90% of chromosomes investigated. The frequencies of the haplotypes differed according to linguistic and geographical affiliation. Conclusion Populations in the northwestern (Byelorussians from Mjadel'), northern (Russians from Mezen' and Oshevensk), and eastern (Russians from Puchezh) parts of the East European Plain had relatively high frequencies of haplotype B2-D2-A2, which may reflect admixture with Uralic-speaking populations that inhabited all of these regions in the Early Middle Ages.
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Affiliation(s)
- Olga V Flegontova
- Department of Human Molecular Genetics, Institute of Molecular Genetics, Russian Academy of Sciences, Moscow, Russia.
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