1
|
García-Ortiz H, Barajas-Olmos F, Contreras-Cubas C, Reynolds AW, Flores-Huacuja M, Snow M, Ramos-Madrigal J, Mendoza-Caamal E, Baca P, López-Escobar TA, Bolnick DA, Flores-Martínez SE, Ortiz-Lopez R, Kostic AD, Villafan-Bernal JR, Galaviz-Hernández C, Centeno-Cruz F, García-Zapién AG, Monge-Cázares T, Lazalde-Ramos BP, Loeza-Becerra F, Abrahantes-Pérez MDC, Rangel-Villalobos H, Sosa-Macías M, Rojas-Martínez A, Martínez-Hernández A, Orozco L. Unraveling Signatures of Local Adaptation among Indigenous Groups from Mexico. Genes (Basel) 2022; 13:genes13122251. [PMID: 36553518 PMCID: PMC9778281 DOI: 10.3390/genes13122251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 11/05/2022] [Accepted: 11/15/2022] [Indexed: 12/03/2022] Open
Abstract
Few studies have addressed how selective pressures have shaped the genetic structure of the current Native American populations, and they have mostly limited their inferences to admixed Latin American populations. Here, we searched for local adaptation signals, based on integrated haplotype scores and population branch statistics, in 325 Mexican Indigenous individuals with at least 99% Native American ancestry from five previously defined geographical regions. Although each region exhibited its own local adaptation profile, only PPARG and AJAP1, both negative regulators of the Wnt/β catenin signaling pathway, showed significant adaptation signals in all the tested regions. Several signals were found, mainly in the genes related to the metabolic processes and immune response. A pathway enrichment analysis revealed the overrepresentation of selected genes related to several biological phenotypes/conditions, such as the immune response and metabolic pathways, in agreement with previous studies, suggesting that immunological and metabolic pressures are major drivers of human adaptation. Genes related to the gut microbiome measurements were overrepresented in all the regions, highlighting the importance of studying how humans have coevolved with the microbial communities that colonize them. Our results provide a further explanation of the human evolutionary history in response to environmental pressures in this region.
Collapse
Affiliation(s)
- Humberto García-Ortiz
- Instituto Nacional de Medicina Genómica, Tlalpan, Mexico City 14610, Mexico
- Correspondence:
| | | | | | | | | | - Meradeth Snow
- Department of Anthropology, University of Montana, Missoula, MT 59812, USA
| | - Jazmín Ramos-Madrigal
- Section for Evolutionary Genomics, The GLOBE Institute, The University of Copenhagen, Øster Farimagsgade 5A, 1352 Copenhagen, Denmark
| | | | - Paulina Baca
- Instituto Nacional de Medicina Genómica, Tlalpan, Mexico City 14610, Mexico
| | | | - Deborah A. Bolnick
- Department of Anthropology and Institute for Systems Genomics, University of Connecticut, Storrs, CT 06269-3003, USA
| | - Silvia Esperanza Flores-Martínez
- División de Medicina Molecular, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social (IMSS), Guadalajara 44340, Mexico
| | - Rocio Ortiz-Lopez
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud and Insitute for Obesity Research, Monterrey 64700, Mexico
- Centro de Investigacion y Desarrollo en Ciencias de la Salud, Universidad Autonoma de Nuevo Leon, Monterrey 64460, Mexico
| | | | | | | | | | - Alejandra Guadalupe García-Zapién
- Departamento de Farmacobiología, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Guadalajara 44430, Mexico
| | | | | | | | | | - Héctor Rangel-Villalobos
- Instituto de Investigación en Genética Molecular, Universidad de Guadalajara Ocotlán, Ocotlán 44100, Mexico
| | | | - Augusto Rojas-Martínez
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud and Insitute for Obesity Research, Monterrey 64700, Mexico
- Centro de Investigacion y Desarrollo en Ciencias de la Salud, Universidad Autonoma de Nuevo Leon, Monterrey 64460, Mexico
| | | | - Lorena Orozco
- Instituto Nacional de Medicina Genómica, Tlalpan, Mexico City 14610, Mexico
| |
Collapse
|
2
|
Tournebize R, Chu G, Moorjani P. Reconstructing the history of founder events using genome-wide patterns of allele sharing across individuals. PLoS Genet 2022; 18:e1010243. [PMID: 35737729 PMCID: PMC9223333 DOI: 10.1371/journal.pgen.1010243] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Accepted: 05/08/2022] [Indexed: 11/30/2022] Open
Abstract
Founder events play a critical role in shaping genetic diversity, fitness and disease risk in a population. Yet our understanding of the prevalence and distribution of founder events in humans and other species remains incomplete, as most existing methods require large sample sizes or phased genomes. Thus, we developed ASCEND that measures the correlation in allele sharing between pairs of individuals across the genome to infer the age and strength of founder events. We show that ASCEND can reliably estimate the parameters of founder events under a range of demographic scenarios. We then apply ASCEND to two species with contrasting evolutionary histories: ~460 worldwide human populations and ~40 modern dog breeds. In humans, we find that over half of the analyzed populations have evidence for recent founder events, associated with geographic isolation, modes of sustenance, or cultural practices such as endogamy. Notably, island populations have lower population sizes than continental groups and most hunter-gatherer, nomadic and indigenous groups have evidence of recent founder events. Many present-day groups––including Native Americans, Oceanians and South Asians––have experienced more extreme founder events than Ashkenazi Jews who have high rates of recessive diseases due their known history of founder events. Using ancient genomes, we show that the strength of founder events differs markedly across geographic regions and time––with three major founder events related to the peopling of Americas and a trend in decreasing strength of founder events in Europe following the Neolithic transition and steppe migrations. In dogs, we estimate extreme founder events in most breeds that occurred in the last 25 generations, concordant with the establishment of many dog breeds during the Victorian times. Our analysis highlights a widespread history of founder events in humans and dogs and elucidates some of the demographic and cultural practices related to these events. A founder event occurs when small numbers of ancestral individuals give rise to a large fraction of the population. Founder events reduce genetic variation and increase the risk of recessive diseases. Despite their importance in evolutionary and disease studies, we still only have a limited comprehension of their prevalence and properties in humans and other species, as most existing methods require large sample sizes or phased genomes. Here, we present a flexible method, ASCEND, to infer the timing and the strength of founder events that is suitable for sparse datasets with few samples or limited coverage. ASCEND provides reliable estimates across a wide range of demographic scenarios. By applying it to data from two species (humans and dogs), we document a widespread history of recent founder events in both species and provide insights about the demographic processes related to these events. Our analysis helps to identify groups with strong founder events that should be prioritized for future studies as they offer a unique opportunity for biological discovery and reducing disease burden through mapping of recessive disease-causing genes and pathways, as previously shown in studies of Ashkenazi Jews and Finns.
Collapse
Affiliation(s)
- Rémi Tournebize
- Department of Molecular and Cell Biology, University of California, Berkeley, California, United States of America
- Center for Computational Biology, University of California, Berkeley, California, United States of America
- * E-mail: (RT); (PM)
| | - Gillian Chu
- Department of Electrical Engineering and Computer Science, University of California, Berkeley, California, United States of America
| | - Priya Moorjani
- Department of Molecular and Cell Biology, University of California, Berkeley, California, United States of America
- Center for Computational Biology, University of California, Berkeley, California, United States of America
- * E-mail: (RT); (PM)
| |
Collapse
|
3
|
The genomic landscape of Mexican Indigenous populations brings insights into the peopling of the Americas. Nat Commun 2021; 12:5942. [PMID: 34642312 PMCID: PMC8511047 DOI: 10.1038/s41467-021-26188-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 09/22/2021] [Indexed: 12/30/2022] Open
Abstract
The genetic makeup of Indigenous populations inhabiting Mexico has been strongly influenced by geography and demographic history. Here, we perform a genome-wide analysis of 716 newly genotyped individuals from 60 of the 68 recognized ethnic groups in Mexico. We show that the genetic structure of these populations is strongly influenced by geography, and our demographic reconstructions suggest a decline in the population size of all tested populations in the last 15-30 generations. We find evidence that Aridoamerican and Mesoamerican populations diverged roughly 4-9.9 ka, around the time when sedentary farming started in Mesoamerica. Comparisons with ancient genomes indicate that the Upward Sun River 1 (USR1) individual is an outgroup to Mexican/South American Indigenous populations, whereas Anzick-1 was more closely related to Mesoamerican/South American populations than to those from Aridoamerica, showing an even more complex history of divergence than recognized so far.
Collapse
|
4
|
Yilmaz F, Null M, Astling D, Yu HC, Cole J, Santorico SA, Hallgrimsson B, Manyama M, Spritz RA, Hendricks AE, Shaikh TH. Genome-wide copy number variations in a large cohort of bantu African children. BMC Med Genomics 2021; 14:129. [PMID: 34001112 PMCID: PMC8130444 DOI: 10.1186/s12920-021-00978-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 05/06/2021] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Copy number variations (CNVs) account for a substantial proportion of inter-individual genomic variation. However, a majority of genomic variation studies have focused on single-nucleotide variations (SNVs), with limited genome-wide analysis of CNVs in large cohorts, especially in populations that are under-represented in genetic studies including people of African descent. METHODS We carried out a genome-wide copy number analysis in > 3400 healthy Bantu Africans from Tanzania. Signal intensity data from high density (> 2.5 million probes) genotyping arrays were used for CNV calling with three algorithms including PennCNV, DNAcopy and VanillaICE. Stringent quality metrics and filtering criteria were applied to obtain high confidence CNVs. RESULTS We identified over 400,000 CNVs larger than 1 kilobase (kb), for an average of 120 CNVs (SE = 2.57) per individual. We detected 866 large CNVs (≥ 300 kb), some of which overlapped genomic regions previously associated with multiple congenital anomaly syndromes, including Prader-Willi/Angelman syndrome (Type1) and 22q11.2 deletion syndrome. Furthermore, several of the common CNVs seen in our cohort (≥ 5%) overlap genes previously associated with developmental disorders. CONCLUSIONS These findings may help refine the phenotypic outcomes and penetrance of variations affecting genes and genomic regions previously implicated in diseases. Our study provides one of the largest datasets of CNVs from individuals of African ancestry, enabling improved clinical evaluation and disease association of CNVs observed in research and clinical studies in African populations.
Collapse
Affiliation(s)
- Feyza Yilmaz
- Integrative and Systems Biology Program, University of Colorado Denver, Denver, USA
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, USA
| | - Megan Null
- Department of Mathematical and Statistical Sciences, University of Colorado Denver, Denver, USA
| | - David Astling
- Department of Biochemistry and Molecular Genetics, University of Colorado School of Medicine, Aurora, USA
| | - Hung-Chun Yu
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, USA
| | - Joanne Cole
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, USA
- Human Medical Genetics and Genomics Program, University of Colorado School of Medicine, Aurora, USA
| | - Stephanie A Santorico
- Department of Mathematical and Statistical Sciences, University of Colorado Denver, Denver, USA
- Human Medical Genetics and Genomics Program, University of Colorado School of Medicine, Aurora, USA
- Biostatistics and Informatics, Colorado School of Public Health, Aurora, USA
| | - Benedikt Hallgrimsson
- Department of Cell Biology and Anatomy, Cumming School of Medicine and Alberta, Children's Hospital Research Institute, University of Calgary, Calgary, Canada
| | - Mange Manyama
- Anatomy in Radiology, Weill Cornell Medicine-Qatar, Doha, Qatar
| | - Richard A Spritz
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, USA
- Human Medical Genetics and Genomics Program, University of Colorado School of Medicine, Aurora, USA
| | - Audrey E Hendricks
- Department of Mathematical and Statistical Sciences, University of Colorado Denver, Denver, USA
- Human Medical Genetics and Genomics Program, University of Colorado School of Medicine, Aurora, USA
- Biostatistics and Informatics, Colorado School of Public Health, Aurora, USA
| | - Tamim H Shaikh
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, USA.
- Human Medical Genetics and Genomics Program, University of Colorado School of Medicine, Aurora, USA.
| |
Collapse
|
5
|
|
6
|
Wagner JK, Colwell C, Claw KG, Stone AC, Bolnick DA, Hawks J, Brothers KB, Garrison NA. Fostering Responsible Research on Ancient DNA. Am J Hum Genet 2020; 107:183-195. [PMID: 32763189 PMCID: PMC7413888 DOI: 10.1016/j.ajhg.2020.06.017] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Anticipating and addressing the social implications of scientific work is a fundamental responsibility of all scientists. However, expectations for ethically sound practices can evolve over time as the implications of science come to be better understood. Contemporary researchers who work with ancient human remains, including those who conduct ancient DNA research, face precisely this challenge as it becomes clear that practices such as community engagement are needed to address the important social implications of this work. To foster and promote ethical engagement between researchers and communities, we offer five practical recommendations for ancient DNA researchers: (1) formally consult with communities; (2) address cultural and ethical considerations; (3) engage communities and support capacity building; (4) develop plans to report results and manage data; and (5) develop plans for long-term responsibility and stewardship. Ultimately, every member of a research team has an important role in fostering ethical research on ancient DNA.
Collapse
Affiliation(s)
- Jennifer K Wagner
- Professional Practice and Social Implications Committee (formerly the Social Issues Committee), American Society of Human Genetics, Bethesda, MD 20814, USA; Responsible Ancient DNA Research Working Group, American Society of Human Genetics, Bethesda, MD 20814, USA; Center for Translational Bioethics and Health Care Policy, Geisinger, Danville, PA 17822, USA.
| | - Chip Colwell
- Responsible Ancient DNA Research Working Group, American Society of Human Genetics, Bethesda, MD 20814, USA; Department of Anthropology, Denver Museum of Nature and Science, Denver, CO 80205, USA
| | - Katrina G Claw
- Responsible Ancient DNA Research Working Group, American Society of Human Genetics, Bethesda, MD 20814, USA; Division of Biomedical Informatics and Personalized Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Anne C Stone
- Responsible Ancient DNA Research Working Group, American Society of Human Genetics, Bethesda, MD 20814, USA; School of Human Evolution and Social Change, Arizona State University, Tempe, AZ 85287, USA
| | - Deborah A Bolnick
- Responsible Ancient DNA Research Working Group, American Society of Human Genetics, Bethesda, MD 20814, USA; Department of Anthropology, University of Connecticut, Storrs, CT 06269, USA; Institute for Systems Genomics, University of Connecticut, Storrs, CT 06269, USA
| | - John Hawks
- Responsible Ancient DNA Research Working Group, American Society of Human Genetics, Bethesda, MD 20814, USA; Department of Anthropology, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Kyle B Brothers
- Professional Practice and Social Implications Committee (formerly the Social Issues Committee), American Society of Human Genetics, Bethesda, MD 20814, USA; Responsible Ancient DNA Research Working Group, American Society of Human Genetics, Bethesda, MD 20814, USA; Department of Pediatrics, University of Louisville, Louisville, KY 40202, USA
| | - Nanibaa' A Garrison
- Professional Practice and Social Implications Committee (formerly the Social Issues Committee), American Society of Human Genetics, Bethesda, MD 20814, USA; Responsible Ancient DNA Research Working Group, American Society of Human Genetics, Bethesda, MD 20814, USA; Institute for Society and Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA; Institute for Precision Health, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| |
Collapse
|
7
|
Strauss M, Acosta-Herrera M, Alcaraz A, Casares-Marfil D, Bosch-Nicolau P, Lo Presti MS, Molina I, González CI, Martín J. Association of IL18 genetic polymorphisms with Chagas disease in Latin American populations. PLoS Negl Trop Dis 2019; 13:e0007859. [PMID: 31751351 PMCID: PMC6894881 DOI: 10.1371/journal.pntd.0007859] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 12/05/2019] [Accepted: 10/21/2019] [Indexed: 12/14/2022] Open
Abstract
Host genetic factors have been suggested to play an important role in the susceptibility to Chagas disease. Given the influence of interleukin 18 (IL-18) in the development of the disease, in the present study, we analyzed three IL18 genetic variants (rs2043055, rs1946518, rs360719) regarding the predisposition to Trypanosoma cruzi infection and the development of chronic Chagas cardiomyopathy (CCC), in different Latin America populations. Genetic data of 3,608 patients from Colombia, Bolivia, Argentina, and Brazil were meta-analyzed to validate previous findings with increased statistical power. Seropositive and seronegative individuals were compared for T. cruzi infection susceptibility. In the Colombian cohort, the allelic frequencies of the three variants showed a significant association, with adjustment for sex and age, and also after applying multiple testing adjustments. Among the Colombian and Argentinean cohorts, rs360719 showed a significant genetic effect in a fixed-effects meta-analysis after a Bonferroni correction (OR: 0.76, CI: 0.66-0.89, P = 0.001). For CCC, the rs2043055 showed an association with protection from cardiomyopathy in the Colombian cohort (OR: 0.79, CI: 0.64-0.99, P = 0.037), with adjustment for sex and age, and after applying multiple testing adjustments. The meta-analysis of the CCC vs. asymptomatic patients from the four cohorts showed no evidence of association. In conclusion, our results validated the association found previously in the Colombian cohort suggesting that IL18 rs360719 plays an important role in the susceptibility to T. cruzi infection and no evidence of association was found between the IL18 genetic variants and CCC in the Latin American population studied.
Collapse
Affiliation(s)
- Mariana Strauss
- Centro de Estudios e Investigación de la Enfermedad de Chagas y Leishmaniasis, FCM, INICSA-CONICET-UNC, Córdoba, Argentina
| | | | - Alexia Alcaraz
- Instituto de Parasitología y Biomedicina López-Neyra, IPBLN-CSIC, PTS Granada, Granada, España
| | - Desiré Casares-Marfil
- Instituto de Parasitología y Biomedicina López-Neyra, IPBLN-CSIC, PTS Granada, Granada, España
| | - Pau Bosch-Nicolau
- Unidad de Medicina Tropical y Salud Internacional Hospital Universitari Vall d'Hebron, PROSICS, Barcelona, España
| | - María Silvina Lo Presti
- Centro de Estudios e Investigación de la Enfermedad de Chagas y Leishmaniasis, FCM, INICSA-CONICET-UNC, Córdoba, Argentina
| | - Israel Molina
- Unidad de Medicina Tropical y Salud Internacional Hospital Universitari Vall d'Hebron, PROSICS, Barcelona, España
| | | | - Javier Martín
- Instituto de Parasitología y Biomedicina López-Neyra, IPBLN-CSIC, PTS Granada, Granada, España
| |
Collapse
|
8
|
Gnecchi-Ruscone GA, Sarno S, De Fanti S, Gianvincenzo L, Giuliani C, Boattini A, Bortolini E, Di Corcia T, Sanchez Mellado C, Dàvila Francia TJ, Gentilini D, Di Blasio AM, Di Cosimo P, Cilli E, Gonzalez-Martin A, Franceschi C, Franceschi ZA, Rickards O, Sazzini M, Luiselli D, Pettener D. Dissecting the Pre-Columbian Genomic Ancestry of Native Americans along the Andes-Amazonia Divide. Mol Biol Evol 2019; 36:1254-1269. [PMID: 30895292 PMCID: PMC6526910 DOI: 10.1093/molbev/msz066] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Extensive European and African admixture coupled with loss of Amerindian lineages makes the reconstruction of pre-Columbian history of Native Americans based on present-day genomes extremely challenging. Still open questions remain about the dispersals that occurred throughout the continent after the initial peopling from the Beringia, especially concerning the number and dynamics of diffusions into South America. Indeed, if environmental and historical factors contributed to shape distinct gene pools in the Andes and Amazonia, the origins of this East-West genetic structure and the extension of further interactions between populations residing along this divide are still not well understood. To this end, we generated new high-resolution genome-wide data for 229 individuals representative of one Central and ten South Amerindian ethnic groups from Mexico, Peru, Bolivia, and Argentina. Low levels of European and African admixture in the sampled individuals allowed the application of fine-scale haplotype-based methods and demographic modeling approaches. These analyses revealed highly specific Native American genetic ancestries and great intragroup homogeneity, along with limited traces of gene flow mainly from the Andes into Peruvian Amazonians. Substantial amount of genetic drift differentially experienced by the considered populations underlined distinct patterns of recent inbreeding or prolonged isolation. Overall, our results support the hypothesis that all non-Andean South Americans are compatible with descending from a common lineage, while we found low support for common Mesoamerican ancestors of both Andeans and other South American groups. These findings suggest extensive back-migrations into Central America from non-Andean sources or conceal distinct peopling events into the Southern Continent.
Collapse
Affiliation(s)
- Guido Alberto Gnecchi-Ruscone
- Laboratory of Molecular Anthropology and Centre for Genome Biology, Department of Biological, Geological and Environmental Sciences, University of Bologna, Bologna, Italy.,Department of Archaeogenetics, Max Planck Institute for the Science of Human History, Jena, Germany
| | - Stefania Sarno
- Laboratory of Molecular Anthropology and Centre for Genome Biology, Department of Biological, Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| | - Sara De Fanti
- Laboratory of Molecular Anthropology and Centre for Genome Biology, Department of Biological, Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| | - Laura Gianvincenzo
- Laboratory of Molecular Anthropology and Centre for Genome Biology, Department of Biological, Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| | - Cristina Giuliani
- Laboratory of Molecular Anthropology and Centre for Genome Biology, Department of Biological, Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| | - Alessio Boattini
- Laboratory of Molecular Anthropology and Centre for Genome Biology, Department of Biological, Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| | - Eugenio Bortolini
- Department of Cultural Heritage, University of Bologna, Ravenna, Italy
| | - Tullia Di Corcia
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | - Cesar Sanchez Mellado
- Faculty of Intercultural Education and Humanity, National Intercultural University of Amazon, Ucayali, Peru
| | | | - Davide Gentilini
- Center for Biomedical Research and Technologies, Italian Auxologic Institute IRCCS, Milan, Italy
| | - Anna Maria Di Blasio
- Center for Biomedical Research and Technologies, Italian Auxologic Institute IRCCS, Milan, Italy
| | | | - Elisabetta Cilli
- Department of Cultural Heritage, University of Bologna, Ravenna, Italy
| | - Antonio Gonzalez-Martin
- Department of Zoology and Physical Anthropology, Complutense University of Madrid, Madrid, Spain
| | - Claudio Franceschi
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | | | - Olga Rickards
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | - Marco Sazzini
- Laboratory of Molecular Anthropology and Centre for Genome Biology, Department of Biological, Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| | - Donata Luiselli
- Department of Cultural Heritage, University of Bologna, Ravenna, Italy
| | - Davide Pettener
- Laboratory of Molecular Anthropology and Centre for Genome Biology, Department of Biological, Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| |
Collapse
|
9
|
Demand for larger Y-STR reference databases in ethnic melting-pot countries: Argentina as a test case. Int J Legal Med 2019; 133:1309-1320. [PMID: 30737602 DOI: 10.1007/s00414-019-02012-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 01/24/2019] [Indexed: 10/27/2022]
Abstract
The Y chromosome behaves as a single locus. Its genetic information is useful in forensic casework, deficiency kinship testing, and population genetics studies. Continuous increases of loci number within commercial kits forced modification of worldwide reference databases. In Pan American countries, like Argentina, diverse parental ethnic groups contributed to the extant admixed urban populations. We report 509 additional haplotypes of 23 Y-STRs from donors inhabiting urban areas of six Argentinean provinces: Buenos Aires, Santiago del Estero, Santa Cruz, Rio Negro, Santa Fe, and Formosa. To better understand the demographic landscape of the admixed urban paternal lineages, structural analysis was performed using published data from other Argentinean provinces. AMOVA by Rst distance and inferred haplogroups by two predictive online software methods based on haplotypes yielded complementary results with respect to detected population structure, probably due to the different proportions of the Native American Q3-M3 haplogroup in the studied samples. This situation, which is common to most North, Meso, and South American countries, underscores the need for the additional step of typing specific SNPs for haplogroup diagnosis. We propose organizing Y-STR haplotype reference databases according to the most frequent haplogroups detected in a given admixed population.
Collapse
|