1
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Sahle Y, Firew GA, Pearson OM, Stynder DD, Beyin A. MIS 3 innovative behavior and highland occupation during a stable wet episode in the Lake Tana paleoclimate record, Ethiopia. Sci Rep 2024; 14:17038. [PMID: 39048619 PMCID: PMC11269595 DOI: 10.1038/s41598-024-67743-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Accepted: 07/15/2024] [Indexed: 07/27/2024] Open
Abstract
Securely dated archaeological sites from key regions and periods are critical for understanding early modern human adaptive responses to past environmental change. Here, we report new radiocarbon dates of > 42,000 cal years BP for an intensive human occupation of Gorgora rockshelter in the Ethiopian Highlands. We also document the development of innovative technologies and symbolic behaviors starting around this time. The evidenced occupation and behavioral patterns coincide with the onset and persistence of a stable wet phase in the geographically proximate high-resolution core record of Lake Tana. Range expansion into montane habitats and the subsequent development of innovative technologies and behaviors are consistent with population dispersal waves within Africa and beyond during wetter phases ~ 60-40 thousand years ago (ka).
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Affiliation(s)
- Yonatan Sahle
- Department of Archaeology, University of Cape Town, Rondebosch, 7701, South Africa.
- Department of History & Heritage Management, Arba Minch University, PO Box 21, Arba Minch, Ethiopia.
| | - Gedef A Firew
- Department of History & Heritage Management, Bahir Dar University, PO Box 79, Bahir Dar, Ethiopia
| | - Osbjorn M Pearson
- Department of Anthropology, University of New Mexico, Albuquerque, NM87131, USA
| | - Deano D Stynder
- Department of Archaeology, University of Cape Town, Rondebosch, 7701, South Africa
| | - Amanuel Beyin
- Department of Anthropology, University of Louisville, Louisville, KY, 40292, USA
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2
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Frynta D, Elmi HSA, Janovcová M, Rudolfová V, Štolhoferová I, Rexová K, Král D, Sommer D, Berti DA, Landová E, Frýdlová P. Are vipers prototypic fear-evoking snakes? A cross-cultural comparison of Somalis and Czechs. Front Psychol 2023; 14:1233667. [PMID: 37928591 PMCID: PMC10620321 DOI: 10.3389/fpsyg.2023.1233667] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 09/08/2023] [Indexed: 11/07/2023] Open
Abstract
Snakes are known as highly fear-evoking animals, eliciting preferential attention and fast detection in humans. We examined the human fear response to snakes in the context of both current and evolutionary experiences, conducting our research in the cradle of humankind, the Horn of Africa. This region is characterized by the frequent occurrence of various snake species, including deadly venomous viperids (adders) and elapids (cobras and mambas). We conducted experiments in Somaliland and compared the results with data from Czech respondents to address the still unresolved questions: To which extent is human fear of snakes affected by evolutionary or current experience and local culture? Can people of both nationalities recognize venomous snakes as a category, or are they only afraid of certain species that are most dangerous in a given area? Are respondents of both nationalities equally afraid of deadly snakes from both families (Viperidae, Elapidae)? We employed a well-established picture-sorting approach, consisting of 48 snake species belonging to four distinct groups. Our results revealed significant agreement among Somali as well as Czech respondents. We found a highly significant effect of the stimulus on perceived fear in both populations. Vipers appeared to be the most salient stimuli in both populations, as they occupied the highest positions according to the reported level of subjectively perceived fear. The position of vipers strongly contrasts with the fear ranking of deadly venomous elapids, which were in lower positions. Fear scores of vipers were significantly higher in both populations, and their best predictor was the body width of the snake. The evolutionary, cultural, and cognitive aspects of this phenomenon are discussed.
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Affiliation(s)
- Daniel Frynta
- Department of Zoology, Faculty of Science, Charles University, Prague, Czechia
| | - Hassan Sh Abdirahman Elmi
- Department of Zoology, Faculty of Science, Charles University, Prague, Czechia
- Department of Biology, Faculty of Education, Amoud University, Borama, Somalia
| | - Markéta Janovcová
- Department of Zoology, Faculty of Science, Charles University, Prague, Czechia
| | - Veronika Rudolfová
- Department of Zoology, Faculty of Science, Charles University, Prague, Czechia
| | - Iveta Štolhoferová
- Department of Zoology, Faculty of Science, Charles University, Prague, Czechia
| | - Kateřina Rexová
- Department of Zoology, Faculty of Science, Charles University, Prague, Czechia
| | - David Král
- Department of Zoology, Faculty of Science, Charles University, Prague, Czechia
| | - David Sommer
- Department of Zoology, Faculty of Science, Charles University, Prague, Czechia
| | - Daniel Alex Berti
- Department of Zoology, Faculty of Science, Charles University, Prague, Czechia
| | - Eva Landová
- Department of Zoology, Faculty of Science, Charles University, Prague, Czechia
| | - Petra Frýdlová
- Department of Zoology, Faculty of Science, Charles University, Prague, Czechia
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3
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Smith CJ, Ashford JW. Apolipoprotein ɛ4-Associated Protection Against Pediatric Enteric Infections is a Survival Advantage in Pre-Industrial Populations. J Alzheimers Dis 2023:JAD221218. [PMID: 37125551 DOI: 10.3233/jad-221218] [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: 05/02/2023]
Abstract
Until 300,000 years ago, ancestors of modern humans ubiquitously carried the apolipoprotein E (APOE) ɛ4/ɛ4 genotype, when the ɛ3 allele mutated from the ancestral ɛ4, which elevates the risk of Alzheimer's disease. Modern humans living today predominantly carry the ɛ3 allele, which provides protection against heart disease and dementia in long-lived populations. The ancestral ɛ4 allele has been highly preserved in isolated populations in tropical and Arctic regions with high pathogen burdens, e.g., helminths. Early humans experienced serious enteric infections that exerted evolutionary selection pressure, and factors that mitigate infant and childhood mortality from enteric infections also exert selection pressure. Some bacteria can exploit the host's defensive inflammatory response to colonize and invade the host. Pathogen-induced inflammation associated with infant and childhood diarrhea can damage the gut wall long after the invading organisms are no longer present. Inflammation not only resides in the mucosal wall, but also induces systemic inflammation. Baseline systemic inflammation is lower in ɛ4 carriers, yet ɛ4 carriers display a stronger host inflammatory response that reduces pathogen burdens, increasing infant and early childhood survival. Evolutionary selection of the ɛ3 allele likely occurred after humans moved into temperate zones with lower pathogen burdens, unrelated to protection from Alzheimer's disease.
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Affiliation(s)
| | - J Wesson Ashford
- Stanford University and VA Palo Alto Health Care System, Palo Alto, CA, USA
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4
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Phylogeography of Sub-Saharan Mitochondrial Lineages Outside Africa Highlights the Roles of the Holocene Climate Changes and the Atlantic Slave Trade. Int J Mol Sci 2022; 23:ijms23169219. [PMID: 36012483 PMCID: PMC9408831 DOI: 10.3390/ijms23169219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/14/2022] [Accepted: 08/15/2022] [Indexed: 12/03/2022] Open
Abstract
Despite the importance of ancient DNA for understanding human prehistoric dispersals, poor survival means that data remain sparse for many areas in the tropics, including in Africa. In such instances, analysis of contemporary genomes remains invaluable. One promising approach is founder analysis, which identifies and dates migration events in non-recombining systems. However, it has yet to be fully exploited as its application remains controversial. Here, we test the approach by evaluating the age of sub-Saharan mitogenome lineages sampled outside Africa. The analysis confirms that such lineages in the Americas date to recent centuries—the time of the Atlantic slave trade—thereby validating the approach. By contrast, in North Africa, Southwestern Asia and Europe, roughly half of the dispersal signal dates to the early Holocene, during the “greening” of the Sahara. We elaborate these results by showing that the main source regions for the two main dispersal episodes are distinct. For the recent dispersal, the major source was West Africa, but with two exceptions: South America, where the fraction from Southern Africa was greater, and Southwest Asia, where Eastern Africa was the primary source. These observations show the potential of founder analysis as both a supplement and complement to ancient DNA studies.
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5
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Joerin-Luque IA, Augusto DG, Calonga-Solís V, de Almeida RC, Lopes CVG, Petzl-Erler ML, Beltrame MH. Uniparental markers reveal new insights on subcontinental ancestry and sex-biased admixture in Brazil. Mol Genet Genomics 2022; 297:419-435. [DOI: 10.1007/s00438-022-01857-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 01/04/2022] [Indexed: 10/19/2022]
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6
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African genetic diversity and adaptation inform a precision medicine agenda. Nat Rev Genet 2021; 22:284-306. [PMID: 33432191 DOI: 10.1038/s41576-020-00306-8] [Citation(s) in RCA: 66] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/02/2020] [Indexed: 01/29/2023]
Abstract
The deep evolutionary history of African populations, since the emergence of modern humans more than 300,000 years ago, has resulted in high genetic diversity and considerable population structure. Selected genetic variants have increased in frequency due to environmental adaptation, but recent exposures to novel pathogens and changes in lifestyle render some of them with properties leading to present health liabilities. The unique discoverability potential from African genomic studies promises invaluable contributions to understanding the genomic and molecular basis of health and disease. Globally, African populations are understudied, and precision medicine approaches are largely based on data from European and Asian-ancestry populations, which limits the transferability of findings to the continent of Africa. Africa needs innovative precision medicine solutions based on African data that use knowledge and implementation strategies aligned to its climatic, cultural, economic and genomic diversity.
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7
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Uren C, Hoal EG, Möller M. Mycobacterium tuberculosis complex and human coadaptation: a two-way street complicating host susceptibility to TB. Hum Mol Genet 2020; 30:R146-R153. [PMID: 33258469 DOI: 10.1093/hmg/ddaa254] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 11/09/2020] [Accepted: 11/26/2020] [Indexed: 11/14/2022] Open
Abstract
For centuries, the Mycobacterium tuberculosis complex (MTBC) has infected numerous populations, both human and non-human, causing symptomatic tuberculosis (TB) in some hosts. Research investigating the MTBC and how it has evolved with its host over time is sparse and has not resulted in many significant findings. There are even fewer studies investigating adaptation of the human host susceptibility to TB and these have largely focused on genome-wide association and candidate gene association studies. However, results emanating from these association studies are rarely replicated and appear to be population specific. It is, therefore, necessary to relook at the approach taken to investigate the relationship between the MTBC and the human host. Understanding that the evolution of the pathogen is coupled to the evolution of the host might be the missing link needed to effectively investigate their relationship. We hypothesize that this knowledge will bolster future efforts in combating the disease.
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Affiliation(s)
- Caitlin Uren
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, 8000 Cape Town, South Africa.,Centre for Bioinformatics and Computational Biology, Stellenbosch University, 7602 Stellenbosch, South Africa
| | - Eileen G Hoal
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, 8000 Cape Town, South Africa
| | - Marlo Möller
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, 8000 Cape Town, South Africa.,Centre for Bioinformatics and Computational Biology, Stellenbosch University, 7602 Stellenbosch, South Africa
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8
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Hanis Zainal Abidin NW, Mohd Nor N, Sundararajulu P, Zafarina Z. Understanding the genetic history of Malay populations in Peninsular Malaysia via KIR genes diversity. Am J Hum Biol 2020; 33:e23545. [PMID: 33289243 DOI: 10.1002/ajhb.23545] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 11/06/2020] [Accepted: 11/18/2020] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVES Killer cell immunoglobulin-like receptor (KIR) genes with high polymorphism at genotypic levels are important in providing immune defense and have been expanded towards human population genetics. The aim of this study is to provide supporting information from this new biomarker to strengthen the comprehension of genetic history of the complex Malay population. METHODS KIR genotyping for 213 unadmixed Malay individuals from six subethnic groups (Acheh, Bugis, Champa, Mandailing, Minang and Kedah) was carried out using PCR-SSP (sequence specific primers) method in 16 independent reactions. RESULTS The most frequent KIR genotype observed is AA1, followed by AB4 and AB5. Five genotypes; AA1, AB4, AB5, AB7 and AB8 were shared among all Malay subethnic groups. The highest frequency of KIR haplotype A was observed in Minang Malays, whereas Acheh and Kedah Malays carry a balanced distribution of A and B KIR haplotypes. PCA for the KIR genes clearly illustrated six ethnogeographical population clusters; Africans, Amerindian, Northeast Asian, South Asian, Oceania and Southeast Asian populations. All six Malay subethnic groups fell within the Southeast Asian cluster. CONCLUSIONS The complex array of KIR genotypes observed in the Malays indicates their historical interactions with various populations, especially with the Chinese, Indians and Orang Asli. This study has demonstrated the potential of KIR genes as a genetic marker for deducing population structure and genetic relationship between populations.
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Affiliation(s)
| | - Norazmi Mohd Nor
- Human Identification/DNA Unit, School of Health Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Panneerchelvam Sundararajulu
- Human Identification/DNA Unit, School of Health Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Zainuddin Zafarina
- Analytical Biochemistry Research Centre, Universiti Sains Malaysia, 11800, USM, Penang, Malaysia
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9
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Searching for the roots of the first free African American community. Sci Rep 2020; 10:20634. [PMID: 33244039 PMCID: PMC7691995 DOI: 10.1038/s41598-020-77608-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 11/13/2020] [Indexed: 11/30/2022] Open
Abstract
San Basilio de Palenque is an Afro-descendant community near Cartagena, Colombia, founded in the sixteenth century. The recognition of the historical and cultural importance of Palenque has promoted several studies, namely concerning the African roots of its first inhabitants. To deepen the knowledge of the origin and diversity of the Palenque parental lineages, we analysed a sample of 81 individuals for the entire mtDNA Control Region as well as 92 individuals for 27 Y-STRs and 95 for 51 Y-SNPs. The results confirmed the strong isolation of the Palenque, with some degree of influx of Native American maternal lineages, and a European admixture exclusively mediated by men. Due to the high genetic drift observed, a pairwise FST analysis with available data on African populations proved to be inadequate for determining population affinities. In contrast, when a phylogenetic approach was used, it was possible to infer the phylogeographic origin of some lineages in Palenque. Contradicting previous studies indicating a single African origin, our results evidence parental genetic contributions from widely different African regions.
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10
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Inlamea OF, Soares P, Ikuta CY, Heinemann MB, Achá SJ, Machado A, Ferreira Neto JS, Correia-Neves M, Rito T. Evolutionary analysis of Mycobacterium bovis genotypes across Africa suggests co-evolution with livestock and humans. PLoS Negl Trop Dis 2020; 14:e0008081. [PMID: 32119671 PMCID: PMC7077849 DOI: 10.1371/journal.pntd.0008081] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 03/17/2020] [Accepted: 01/22/2020] [Indexed: 01/05/2023] Open
Abstract
Mycobacterium bovis is the pathogenic agent responsible for bovine tuberculosis (bTB), a zoonotic disease affecting mostly cattle, but also transmittable to humans and wildlife. Genetic studies on M. bovis allow to detect possible routes of bTB transmission and the identification of genetic reservoirs that may provide an essential framework for public health action. We used a database with 1235 M. bovis genotypes collected from different regions in Africa with 45 new Mozambican samples. Our analyses, based on phylogeographic and population genetics’ approaches, allowed to identify two clear trends. First, the genetic diversity of M. bovis is geographically clustered across the continent, with the only incidences of long-distance sharing of genotypes, between South Africa and Algeria, likely due to recent European introductions. Second, there is a broad gradient of diversity from Northern to Southern Africa with a diversity focus on the proximity to the Near East, where M. bovis likely emerged with animal domestication in the last 10,000 years. Diversity indices are higher in Eastern Africa, followed successively by Northern, Central, Southern and Western Africa, roughly correlating with the regional archaeological records of introduction of animal domesticates. Given this scenario M. bovis in Africa was probably established millennia ago following a concomitant spread with cattle, sheep and goat. Such scenario could translate into long-term locally adapted lineages across Africa. This work describes a novel scenario for the spread of M. bovis in Africa using the available genetic data, opening the field to further studies using higher resolution genomic data. We describe the genetic diversity distribution in Africa of the pathogen Mycobacterium bovis, the responsible for bovine tuberculosis, mostly present in cattle but also transmittable to other animals including humans. This diversity is geographically clustered within the African continent meaning that the genetic diversity was established through independent evolution within different areas. Higher diversity values of M. bovis are found in Eastern and Northern Africa, followed by Central Africa, with Western and Southern Africa displaying the lowest diversity. These levels of diversity correlate well with the introduction of domesticated livestock in the different regions of Africa, following their domestication in the Near East 10,000 ago. We hypothesize that M. bovis emerged in the Near East and it was carried across Africa together with domesticated animals and people that developed herding practices and biological tolerance for digesting milk in adulthood. Such scenario implies a strong evolution and co-evolution of M. bovis across Africa leading to locally adapted strains that could prove a challenge for public health actions.
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Affiliation(s)
- Osvaldo Frederico Inlamea
- Programa de pós-graduação Ciência Para o desenvolvimento (PGCD)–Instituto Gulbenkian de Ciência–Portugal
- Faculdade de Medicina Veterinária e Zootecnia (VPS-FMVZ), Universidade de São Paulo, USP–Brasil
- Instituto Nacional de Saúde, Ministério de Saúde, Moçambique
- Faculdade de Veterinária (FAVET), Universidade Eduardo Mondlane, Maputo, Moçambique
- * E-mail: (OFI); (TR)
| | - Pedro Soares
- Centre of Molecular and Environmental Biology (CBMA), School of Sciences, University of Minho, Braga, Portugal
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Braga, Portugal
| | - Cassia Yumi Ikuta
- Faculdade de Medicina Veterinária e Zootecnia (VPS-FMVZ), Universidade de São Paulo, USP–Brasil
| | - Marcos Bryan Heinemann
- Faculdade de Medicina Veterinária e Zootecnia (VPS-FMVZ), Universidade de São Paulo, USP–Brasil
| | - Sara Juma Achá
- Direcção de Ciências Animais, Instituto de Investigação Agrária de Moçambique, Ministério de Agricultura e Segurança Alimentar, Maputo, Moçambique
| | - Adelina Machado
- Faculdade de Veterinária (FAVET), Universidade Eduardo Mondlane, Maputo, Moçambique
| | | | - Margarida Correia-Neves
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
- ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Teresa Rito
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
- ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal
- * E-mail: (OFI); (TR)
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11
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Chaichoompu K, Abegaz F, Cavadas B, Fernandes V, Müller-Myhsok B, Pereira L, Van Steen K. A different view on fine-scale population structure in Western African populations. Hum Genet 2020; 139:45-59. [PMID: 31630246 PMCID: PMC6942040 DOI: 10.1007/s00439-019-02069-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 10/09/2019] [Indexed: 01/03/2023]
Abstract
Due to its long genetic evolutionary history, Africans exhibit more genetic variation than any other population in the world. Their genetic diversity further lends itself to subdivisions of Africans into groups of individuals with a genetic similarity of varying degrees of granularity. It remains challenging to detect fine-scale structure in a computationally efficient and meaningful way. In this paper, we present a proof-of-concept of a novel fine-scale population structure detection tool with Western African samples. These samples consist of 1396 individuals from 25 ethnic groups (two groups are African American descendants). The strategy is based on a recently developed tool called IPCAPS. IPCAPS, or Iterative Pruning to CApture Population Structure, is a genetic divisive clustering strategy that enhances iterative pruning PCA, is robust to outliers and does not require a priori computation of haplotypes. Our strategy identified in total 12 groups and 6 groups were revealed as fine-scale structure detected in the samples from Cameroon, Gambia, Mali, Southwest USA, and Barbados. Our finding helped to explain evolutionary processes in the analyzed West African samples and raise awareness for fine-scale structure resolution when conducting genome-wide association and interaction studies.
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Affiliation(s)
- Kridsadakorn Chaichoompu
- GIGA-R Medical Genomics-BIO3, University of Liege, Avenue de l’Hôpital 11, 4000 Liege, Belgium
- Max Planck Institute of Psychiatry, 80804 Munich, Germany
| | - Fentaw Abegaz
- GIGA-R Medical Genomics-BIO3, University of Liege, Avenue de l’Hôpital 11, 4000 Liege, Belgium
| | - Bruno Cavadas
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto (i3S), Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Rua Júlio Amaral de Carvalho, 45, 4200-135 Porto, Portugal
| | - Verónica Fernandes
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto (i3S), Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Rua Júlio Amaral de Carvalho, 45, 4200-135 Porto, Portugal
| | | | - Luísa Pereira
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto (i3S), Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Rua Júlio Amaral de Carvalho, 45, 4200-135 Porto, Portugal
| | - Kristel Van Steen
- GIGA-R Medical Genomics-BIO3, University of Liege, Avenue de l’Hôpital 11, 4000 Liege, Belgium
- WELBIO (Walloon Excellence in Lifesciences and Biotechnology), Avenue Pasteur 6, 1300 Wavre, Belgium
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12
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Carroll C. The Performance Gap in Sport Can Help Determine Which Movements Were Most Essential to Human Evolution. Front Physiol 2019; 10:1412. [PMID: 31803066 PMCID: PMC6877502 DOI: 10.3389/fphys.2019.01412] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 10/31/2019] [Indexed: 11/13/2022] Open
Abstract
Men outperform women in sports that require muscular strength and endurance, but the magnitude of this performance gap (PG) does not appear to be constant; that is, the PG between men and women is greater in some sports than it is in others. Here, we examine the size of this gap within the realm of track and field by comparing the top 50 world-record performances of men to the top 50 records set by women in a number of long-distance running, medium-distance running, short-distance running, and jumping events. While women do not perform at the level of men in any track and field event, the magnitude of the PG trends up or down depending on the type of event. Jumping events exhibit a larger gap between the sexes than do running events, and short-distance running events show a smaller disparity between the sexes than do medium- or long-distance running events. This difference suggests that general sexual dimorphism does not explain why female performance is relatively closer to male performance at some track and field events than others. We hypothesize that this trend can be explained by the presence of sex-blind musculoskeletal adaptations (SBMA's), which accumulate over generations to reduce the size of the PG in certain movements. We conclude that the selection trend favoring in humans should be explored further to determine whether the PG in sport can indeed be used to determine movements to which the human body is adapted.
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13
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Chan EKF, Timmermann A, Baldi BF, Moore AE, Lyons RJ, Lee SS, Kalsbeek AMF, Petersen DC, Rautenbach H, Förtsch HEA, Bornman MSR, Hayes VM. Human origins in a southern African palaeo-wetland and first migrations. Nature 2019; 575:185-189. [PMID: 31659339 DOI: 10.1038/s41586-019-1714-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 09/24/2019] [Indexed: 01/17/2023]
Abstract
Anatomically modern humans originated in Africa around 200 thousand years ago (ka)1-4. Although some of the oldest skeletal remains suggest an eastern African origin2, southern Africa is home to contemporary populations that represent the earliest branch of human genetic phylogeny5,6. Here we generate, to our knowledge, the largest resource for the poorly represented and deepest-rooting maternal L0 mitochondrial DNA branch (198 new mitogenomes for a total of 1,217 mitogenomes) from contemporary southern Africans and show the geographical isolation of L0d1'2, L0k and L0g KhoeSan descendants south of the Zambezi river in Africa. By establishing mitogenomic timelines, frequencies and dispersals, we show that the L0 lineage emerged within the residual Makgadikgadi-Okavango palaeo-wetland of southern Africa7, approximately 200 ka (95% confidence interval, 240-165 ka). Genetic divergence points to a sustained 70,000-year-long existence of the L0 lineage before an out-of-homeland northeast-southwest dispersal between 130 and 110 ka. Palaeo-climate proxy and model data suggest that increased humidity opened green corridors, first to the northeast then to the southwest. Subsequent drying of the homeland corresponds to a sustained effective population size (L0k), whereas wet-dry cycles and probable adaptation to marine foraging allowed the southwestern migrants to achieve population growth (L0d1'2), as supported by extensive south-coastal archaeological evidence8-10. Taken together, we propose a southern African origin of anatomically modern humans with sustained homeland occupation before the first migrations of people that appear to have been driven by regional climate changes.
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Affiliation(s)
- Eva K F Chan
- Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, New South Wales, Australia.,St Vincent's Clinical School, University of New South Wales, Sydney, New South Wales, Australia
| | - Axel Timmermann
- Center for Climate Physics, Institute for Basic Science, Busan, South Korea. .,Pusan National University, Busan, South Korea.
| | - Benedetta F Baldi
- Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, New South Wales, Australia
| | - Andy E Moore
- Department of Geology, Rhodes University, Grahamstown, South Africa
| | - Ruth J Lyons
- Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, New South Wales, Australia
| | - Sun-Seon Lee
- Center for Climate Physics, Institute for Basic Science, Busan, South Korea.,Pusan National University, Busan, South Korea
| | - Anton M F Kalsbeek
- Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, New South Wales, Australia
| | - Desiree C Petersen
- Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, New South Wales, Australia.,The Centre for Proteomic and Genomic Research, Cape Town, South Africa
| | - Hannes Rautenbach
- Climate Change and Variability, South African Weather Service, Pretoria, South Africa.,School of Health Systems and Public Health, University of Pretoria, Pretoria, South Africa.,Akademia, Johannesburg, South Africa
| | | | - M S Riana Bornman
- School of Health Systems and Public Health, University of Pretoria, Pretoria, South Africa
| | - Vanessa M Hayes
- Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, New South Wales, Australia. .,St Vincent's Clinical School, University of New South Wales, Sydney, New South Wales, Australia. .,School of Health Systems and Public Health, University of Pretoria, Pretoria, South Africa. .,Faculty of Health Sciences, University of Limpopo, Sovenga, South Africa. .,Central Clinical School, University of Sydney, Sydney, New South Wales, Australia.
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14
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Fleskes RE, Bruwelheide KS, West FL, Owsley DW, Griffith DR, Barca KG, Cabana GS, Schurr TG. Ancient DNA and bioarchaeological perspectives on European and African diversity and relationships on the colonial Delaware frontier. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2019; 170:232-245. [PMID: 31270812 DOI: 10.1002/ajpa.23887] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 06/07/2019] [Accepted: 06/13/2019] [Indexed: 07/13/2024]
Abstract
OBJECTIVES Ancient DNA (aDNA) and standard osteological analyses applied to 11 skeletons at a late 17th to early 18th century farmstead site in Delaware to investigate the biological and social factors of settlement and slavery in colonial America. MATERIALS AND METHODS Osteological analysis and mitochondrial DNA (mtDNA) sequencing were conducted for all individuals and the resulting data contextualized with archaeological and documentary evidence. RESULTS Individuals of European and African descent were spatially separated in this colonial cemetery. The skeletal remains exhibited differences in osteological features and maternal genetic ancestry. A specific mtDNA haplotype appeared in a subset of the European-descended individuals suggesting they were maternally related. Individuals of African descent were not maternally related, and instead showed a diversity of haplotypes affiliated with present-day Western, Central, and Eastern regions of Africa. DISCUSSION Along with the bioarchaeological and documentary evidence, the aDNA findings contribute to our understanding of life on the colonial Delaware frontier. Evidence of maternal relatedness among European-descended individuals at the site demonstrates kin-based settlements in 17th century Delaware and provides preliminary identifications of individuals. The maternal genetic diversity of the individuals with African descent aligns with the routes of the trans-Atlantic slave trade but broadens our understanding of the ancestries of persons involved in it. Burial positioning, osteological pathology, and lack of maternal kinship among individuals of African descent provide tangible evidence for the emergence of racialized labor and society in Delaware during the late 17th century.
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Affiliation(s)
- Raquel E Fleskes
- Department of Anthropology, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Karin S Bruwelheide
- Department of Anthropology, Smithsonian Institution, National Museum of Natural History, Washington, D.C
| | - Frankie L West
- Department of Anthropology, University of Tennessee, Knoxville, Tennessee
| | - Douglas W Owsley
- Department of Anthropology, Smithsonian Institution, National Museum of Natural History, Washington, D.C
| | | | - Kathryn G Barca
- Department of Anthropology, Smithsonian Institution, National Museum of Natural History, Washington, D.C
| | - Graciela S Cabana
- Department of Anthropology, University of Tennessee, Knoxville, Tennessee
| | - Theodore G Schurr
- Department of Anthropology, University of Pennsylvania, Philadelphia, Pennsylvania
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15
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Semenza JC, Ebi KL. Climate change impact on migration, travel, travel destinations and the tourism industry. J Travel Med 2019; 26:5445924. [PMID: 30976790 PMCID: PMC7107585 DOI: 10.1093/jtm/taz026] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 04/02/2019] [Accepted: 04/05/2019] [Indexed: 12/19/2022]
Abstract
Background: Climate change is not only increasing ambient temperature but also accelerating the frequency, duration and intensity of extreme weather and climate events, such as heavy precipitation and droughts, and causing sea level rise, which can lead to population displacement. Climate change-related reductions in land productivity and habitability and in food and water security can also interact with demographic, economic and social factors to increase migration. In addition to migration, climate change has also implications for travel and the risk of disease. This article discusses the impact of climate change on migration and travel with implications for public health practice. Methods: Literature review. Results: Migrants may be at increased risk of communicable and non-communicable diseases, due to factors in their country of origin and their country of destination or conditions that they experience during migration. Although migration has not been a significant driver of communicable disease outbreaks to date, public health authorities need to ensure that effective screening and vaccination programmes for priority communicable diseases are in place.Population growth coupled with socio-economic development is increasing travel and tourism, and advances in technology have increased global connectivity and reduced the time required to cover long distances. At the same time, as a result of climate change, many temperate regions, including high-income countries, are now suitable for vector-borne disease transmission. This is providing opportunities for importation of vectors and pathogens from endemic areas that can lead to cases or outbreaks of communicable diseases with which health professionals may be unfamiliar. Conclusion: Health systems need to be prepared for the potential population health consequences of migration, travel and tourism and the impact of climate change on these. Integrated surveillance, early detection of cases and other public health interventions are critical to protect population health and prevent and control communicabledisease outbreaks.
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Affiliation(s)
- Jan C Semenza
- Scientific Assessment Section, European Centre for Disease Prevention and Control (ECDC), Gustav III:s boulevard 40, Solna, Sweden
| | - Kristie L Ebi
- Department of Global Health, University of Washington, PO Box 354695, Suite 2330, Seattle, WA, USA
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16
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Kaufman BA, Picard M, Sondheimer N. Mitochondrial DNA, nuclear context, and the risk for carcinogenesis. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2019; 60:455-462. [PMID: 29332303 PMCID: PMC6045969 DOI: 10.1002/em.22169] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 11/25/2017] [Accepted: 12/20/2017] [Indexed: 05/05/2023]
Abstract
The inheritance of mitochondrial DNA (mtDNA) from mother to child is complicated by differences in the stability of the mitochondrial genome. Although the germ line mtDNA is protected through the minimization of replication between generations, sequence variation can occur either through mutation or due to changes in the ratio between distinct genomes that are present in the mother (known as heteroplasmy). Thus, the unpredictability in transgenerational inheritance of mtDNA may cause the emergence of pathogenic mitochondrial and cellular phenotypes in offspring. Studies of the role of mitochondrial metabolism in cancer have a long and rich history, but recent evidence strongly suggests that changes in mitochondrial genotype and phenotype play a significant role in the initiation, progression and treatment of cancer. At the intersection of these two fields lies the potential for emerging mtDNA mutations to drive carcinogenesis in the offspring. In this review, we suggest that this facet of transgenerational carcinogenesis remains underexplored and is a potentially important contributor to cancer. Environ. Mol. Mutagen. 60:455-462, 2019. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Brett A. Kaufman
- Center for Metabolism and Mitochondrial Medicine, Division of Cardiology, Vascular Medicine Institute, Department of Medicine, University of Pittsburgh Medical School, Pittsburgh, PA (USA)
| | - Martin Picard
- Department of Psychiatry, Division of Behavioral Medicine, Columbia University Medical Center, New York, NY 10032 USA
- Department of Neurology, H. Houston Merritt Center, Columbia Translational Neuroscience Initiative, Columbia University Medical Center, New York, NY 10032 USA
- Columbia Aging Center, Columbia University Mailman School of Public Health, New York, NY 10032 USA
| | - Neal Sondheimer
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, Toronto, ON, Canada M5G1X8
- Department of Paediatrics, The University of Toronto School of Medicine, Toronto, ON, Canada M5G1X8
- Correspondence to: Neal Sondheimer, 555 University Avenue, Toronto ON M5G 1X8, p – 416-813-7654 x 301480, f – 416-813-5345,
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17
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Kleisner K, Pokorný Š, Čížková M, Froment A, Černý V. Nomadic pastoralists and sedentary farmers of the Sahel/Savannah Belt of Africa in the light of geometric morphometrics based on facial portraits. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2019; 169:632-645. [DOI: 10.1002/ajpa.23845] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 04/09/2019] [Accepted: 04/15/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Karel Kleisner
- Department of Philosophy and History of Science, Faculty of ScienceCharles University Prague Czech Republic
| | - Šimon Pokorný
- Department of Philosophy and History of Science, Faculty of ScienceCharles University Prague Czech Republic
| | - Martina Čížková
- Department of Anthropology and Human Genetics, Faculty of ScienceCharles University Prague Czech Republic
- Archaeogenetics LaboratoryInstitute of Archaeology of the Academy of Sciences of the Czech Republic Prague Czech Republic
| | - Alain Froment
- UMR 208‐PalocIRD‐MNHN, Musée de l'Homme Paris France
| | - Viktor Černý
- Department of Anthropology and Human Genetics, Faculty of ScienceCharles University Prague Czech Republic
- Archaeogenetics LaboratoryInstitute of Archaeology of the Academy of Sciences of the Czech Republic Prague Czech Republic
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18
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A dispersal of Homo sapiens from southern to eastern Africa immediately preceded the out-of-Africa migration. Sci Rep 2019; 9:4728. [PMID: 30894612 PMCID: PMC6426877 DOI: 10.1038/s41598-019-41176-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 02/19/2019] [Indexed: 01/08/2023] Open
Abstract
Africa was the birth-place of Homo sapiens and has the earliest evidence for symbolic behaviour and complex technologies. The best-attested early flowering of these distinctive features was in a glacial refuge zone on the southern coast 100–70 ka, with fewer indications in eastern Africa until after 70 ka. Yet it was eastern Africa, not the south, that witnessed the first major demographic expansion, ~70–60 ka, which led to the peopling of the rest of the world. One possible explanation is that important cultural traits were transmitted from south to east at this time. Here we identify a mitochondrial signal of such a dispersal soon after ~70 ka – the only time in the last 200,000 years that humid climate conditions encompassed southern and tropical Africa. This dispersal immediately preceded the out-of-Africa expansions, potentially providing the trigger for these expansions by transmitting significant cultural elements from the southern African refuge.
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19
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Macaulay V, Soares P, Richards MB. Rectifying long-standing misconceptions about the ρ statistic for molecular dating. PLoS One 2019; 14:e0212311. [PMID: 30779770 PMCID: PMC6380571 DOI: 10.1371/journal.pone.0212311] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 01/19/2019] [Indexed: 01/01/2023] Open
Abstract
When divided by a given mutation rate, the ρ (rho) statistic provides a simple estimator of the age of a clade within a phylogenetic tree by averaging the number of mutations from each sample in the clade to its root. However, a long-standing critique of the use of ρ in genetic dating has been quite often cited. Here we show that the critique is unfounded. We demonstrate by a formal mathematical argument and illustrate with a simulation study that ρ estimates are unbiased and also that ρ and maximum likelihood estimates do not differ in any systematic fashion. We also demonstrate that the claim that the associated confidence intervals commonly estimate the uncertainty inappropriately is flawed since it relies on a means of calculating standard errors that is not used by any other researchers, whereas an established expression for the standard error is largely unproblematic. We conclude that ρ dating, alongside approaches such as maximum likelihood (ML) and Bayesian inference, remains a useful tool for genetic dating.
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Affiliation(s)
- Vincent Macaulay
- School of Mathematics and Statistics, University of Glasgow, Glasgow, United Kingdom
| | - Pedro Soares
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, Braga, Portugal
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Campus de Gualtar, Braga, Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal
- * E-mail:
| | - Martin B. Richards
- Department of Biological Sciences, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, United Kingdom
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20
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Oliveira M, Ferreira J, Fernandes V, Sakuntabhai A, Pereira L. Host ancestry and dengue fever: from mapping of candidate genes to prediction of worldwide genetic risk. Future Virol 2018. [DOI: 10.2217/fvl-2018-0073] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Prevalence of many complex diseases, including dengue disease, is not even across the world. Dengue is endemic in several overpopulated urban centers in poor Asian and American countries, representing a risk to two-thirds of the human population. High-throughput genomic screenings and new algorithms of admixture mapping are allowing confirming that ancestry plays a major role in dengue disease. Allele and haplotype candidate frequencies display high heterogeneity between population groups, especially in comparison with Africans. Genetic risk evaluation testifies African ancestry protection against the more severe forms of the disease, most probably due to natural selection of protective variants. European genetic predisposition is identical to the Asian for severer forms, but lower for mild dengue fever.
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Affiliation(s)
- Marisa Oliveira
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), 4200-135 Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, 4050-313 Porto, Portugal
- Institut Pasteur, Functional Genetics of Infectious Diseases Unit, 75015 Paris, France
| | - Joana Ferreira
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), 4200-135 Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, 4050-313 Porto, Portugal
| | - Verónica Fernandes
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), 4200-135 Porto, Portugal
| | - Anavaj Sakuntabhai
- Institut Pasteur, Functional Genetics of Infectious Diseases Unit, 75015 Paris, France
- Pasteur Kyoto International Joint Research Unit for Integrative Vaccinomics, Kyoto, Japan
- CNRS, Unité de Recherche Associée 3012, 75015 Paris, France
| | - Luisa Pereira
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), 4200-135 Porto, Portugal
- Departamento de Patologia, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal
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21
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Blegen N, Jicha BR, McBrearty S. A new tephrochronology for early diverse stone tool technologies and long-distance raw material transport in the Middle to Late Pleistocene Kapthurin Formation, East Africa. J Hum Evol 2018; 121:75-103. [DOI: 10.1016/j.jhevol.2018.03.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 03/14/2018] [Accepted: 03/20/2018] [Indexed: 10/16/2022]
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22
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Cabrera VM, Marrero P, Abu-Amero KK, Larruga JM. Carriers of mitochondrial DNA macrohaplogroup L3 basal lineages migrated back to Africa from Asia around 70,000 years ago. BMC Evol Biol 2018; 18:98. [PMID: 29921229 PMCID: PMC6009813 DOI: 10.1186/s12862-018-1211-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 06/05/2018] [Indexed: 11/15/2022] Open
Abstract
Background The main unequivocal conclusion after three decades of phylogeographic mtDNA studies is the African origin of all extant modern humans. In addition, a southern coastal route has been argued for to explain the Eurasian colonization of these African pioneers. Based on the age of macrohaplogroup L3, from which all maternal Eurasian and the majority of African lineages originated, the out-of-Africa event has been dated around 60-70 kya. On the opposite side, we have proposed a northern route through Central Asia across the Levant for that expansion and, consistent with the fossil record, we have dated it around 125 kya. To help bridge differences between the molecular and fossil record ages, in this article we assess the possibility that mtDNA macrohaplogroup L3 matured in Eurasia and returned to Africa as basal L3 lineages around 70 kya. Results The coalescence ages of all Eurasian (M,N) and African (L3 ) lineages, both around 71 kya, are not significantly different. The oldest M and N Eurasian clades are found in southeastern Asia instead near of Africa as expected by the southern route hypothesis. The split of the Y-chromosome composite DE haplogroup is very similar to the age of mtDNA L3. An Eurasian origin and back migration to Africa has been proposed for the African Y-chromosome haplogroup E. Inside Africa, frequency distributions of maternal L3 and paternal E lineages are positively correlated. This correlation is not fully explained by geographic or ethnic affinities. This correlation rather seems to be the result of a joint and global replacement of the old autochthonous male and female African lineages by the new Eurasian incomers. Conclusions These results are congruent with a model proposing an out-of-Africa migration into Asia, following a northern route, of early anatomically modern humans carrying pre-L3 mtDNA lineages around 125 kya, subsequent diversification of pre-L3 into the basal lineages of L3, a return to Africa of Eurasian fully modern humans around 70 kya carrying the basal L3 lineages and the subsequent diversification of Eurasian-remaining L3 lineages into the M and N lineages in the outside-of-Africa context, and a second Eurasian global expansion by 60 kya, most probably, out of southeast Asia. Climatic conditions and the presence of Neanderthals and other hominins might have played significant roles in these human movements. Moreover, recent studies based on ancient DNA and whole-genome sequencing are also compatible with this hypothesis. Electronic supplementary material The online version of this article (10.1186/s12862-018-1211-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Vicente M Cabrera
- Departamento de Genética, Facultad de Biología, Universidad de La Laguna, E-38271 La Laguna, Tenerife, Spain.
| | - Patricia Marrero
- Research Support General Service, E-38271, La Laguna, Tenerife, Spain
| | - Khaled K Abu-Amero
- Glaucoma Research Chair, Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, Saudi Arabia.,Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, Chicago, IL, USA
| | - Jose M Larruga
- Departamento de Genética, Facultad de Biología, Universidad de La Laguna, E-38271 La Laguna, Tenerife, Spain
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23
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Oliveira M, Saraiva DP, Cavadas B, Fernandes V, Pedro N, Casademont I, Koeth F, Alshamali F, Harich N, Cherni L, Sierra B, Guzman MG, Sakuntabhai A, Pereira L. Population genetics-informed meta-analysis in seven genes associated with risk to dengue fever disease. INFECTION GENETICS AND EVOLUTION 2018; 62:60-72. [PMID: 29673983 DOI: 10.1016/j.meegid.2018.04.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 04/02/2018] [Accepted: 04/13/2018] [Indexed: 12/30/2022]
Abstract
Population genetics theory predicted that rare frequent markers would be the main contributors for heritability of complex diseases, but meta-analyses of genome-wide association studies are revealing otherwise common markers, present in all population groups, as the identified candidate genes. In this work, we applied a population-genetics informed meta-analysis to 10 markers located in seven genes said to be associated with dengue fever disease. Seven markers (in PLCE1, CD32, CD209, OAS1 and OAS3 genes) have high-frequency and the other three (in MICB and TNFA genes) have intermediate frequency. Most of these markers have high discriminatory power between population groups, but their frequencies follow the rules of genetic drift, and seem to have not been under strong selective pressure. There was a good agreement in directional consistency across trans-ethnic association signals, in East Asian and Latin American cohorts, with heterogeneity generated by randomness between studies and especially by low sample sizes. This led to confirm the following significant associations: with DF, odds ratio of 0.67 for TNFA-rs1800629-A; with DHF, 0.82 for CD32-rs1801274-G; with DSS, 0.55 for OAS3-rs2285933-G, 0.80 for PLCE1-rs2274223-G and 1.32 for MICB-rs3132468-C. The overall genetic risks confirmed sub-Saharan African populations and descendants as the best protected against the severer forms of the disease, while Southeast and Northeast Asians are the least protected ones. European and close neighbours are the best protected against dengue fever, while, again, Southeast and Northeast Asians are the least protected ones. These risk scores provide important predictive information for the largely naïve European and North American regions, as well as for Africa where misdiagnosis with other hemorrhagic diseases is of concern.
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Affiliation(s)
- Marisa Oliveira
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), 4200-135 Porto, Portugal; Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, 4050-313 Porto, Portugal; Institut Pasteur, Functional Genetics of Infectious Diseases Unit, 75724 Paris Cedex 15, France
| | - Diana P Saraiva
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), 4200-135 Porto, Portugal; Institut Pasteur, Functional Genetics of Infectious Diseases Unit, 75724 Paris Cedex 15, France
| | - Bruno Cavadas
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), 4200-135 Porto, Portugal; Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, 4050-313 Porto, Portugal
| | - Verónica Fernandes
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), 4200-135 Porto, Portugal
| | - Nicole Pedro
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), 4200-135 Porto, Portugal
| | - Isabelle Casademont
- Institut Pasteur, Functional Genetics of Infectious Diseases Unit, 75724 Paris Cedex 15, France; Pasteur Kyoto International Joint Research Unit for Integrative Vaccinomics, Kyoto, Japan
| | - Fanny Koeth
- Institut Pasteur, Functional Genetics of Infectious Diseases Unit, 75724 Paris Cedex 15, France; Pasteur Kyoto International Joint Research Unit for Integrative Vaccinomics, Kyoto, Japan
| | - Farida Alshamali
- General Department of Forensic Sciences and Criminology, Dubai Police General Headquarters, PO Box 1493, Dubai, United Arab Emirates
| | - Nourdin Harich
- Laboratoire des Sciences Anthropogénétiques et Biotechnologies, Départment de Biologie, Université Chouaïb Doukkali, El Jadida 24000, Morocco
| | - Lotfi Cherni
- Laboratory of Genetics, Immunology and Human Pathology, Faculté de Sciences de Tunis, Université de Tunis El Manar, Tunis 2092, Tunisia; Tunis and High Institute of Biotechnology, University of Monastir, 5000 Monastir, Tunisia
| | - Beatriz Sierra
- Virology Department, PAHO/WHO Collaborating Center for the Study of Dengue and its Vector, Pedro Kourí Institute of Tropical Medicine (IPK), 601 Havana, Cuba
| | - Maria G Guzman
- Virology Department, PAHO/WHO Collaborating Center for the Study of Dengue and its Vector, Pedro Kourí Institute of Tropical Medicine (IPK), 601 Havana, Cuba
| | - Anavaj Sakuntabhai
- Institut Pasteur, Functional Genetics of Infectious Diseases Unit, 75724 Paris Cedex 15, France; Pasteur Kyoto International Joint Research Unit for Integrative Vaccinomics, Kyoto, Japan; CNRS UMR2000: Génomique évolutive, modélisation et santé (GEMS), Paris, France
| | - Luisa Pereira
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), 4200-135 Porto, Portugal; Faculdade de Medicina da Universidade do Porto, Portugal.
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24
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Shriner D, Tekola-Ayele F, Adeyemo A, Rotimi CN. Genetic Ancestry of Hadza and Sandawe Peoples Reveals Ancient Population Structure in Africa. Genome Biol Evol 2018; 10:875-882. [PMID: 29608727 PMCID: PMC5863221 DOI: 10.1093/gbe/evy051] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/05/2018] [Indexed: 12/19/2022] Open
Abstract
The Hadza and Sandawe populations in present-day Tanzania speak languages containing click sounds and therefore thought to be distantly related to southern African Khoisan languages. We analyzed genome-wide genotype data for individuals sampled from the Hadza and Sandawe populations in the context of a global data set of 3,528 individuals from 163 ethno-linguistic groups. We found that Hadza and Sandawe individuals share ancestry distinct from and most closely related to Omotic ancestry; share Khoisan ancestry with populations such as ≠Khomani, Karretjie, and Ju/'hoansi in southern Africa; share Niger-Congo ancestry with populations such as Yoruba from Nigeria and Luhya from Kenya, consistent with migration associated with the Bantu Expansion; and share Cushitic ancestry with Somali, multiple Ethiopian populations, the Maasai population in Kenya, and the Nama population in Namibia. We detected evidence for low levels of Arabian, Nilo-Saharan, and Pygmy ancestries in a minority of individuals. Our results indicate that west Eurasian ancestry in eastern Africa is more precisely the Arabian parent of Cushitic ancestry. Relative to the Out-of-Africa migrations, Hadza ancestry emerged early whereas Sandawe ancestry emerged late.
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Affiliation(s)
- Daniel Shriner
- Center for Research on Genomics and Global Health, National Human Genome Research Institute, Bethesda, Maryland
| | - Fasil Tekola-Ayele
- Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, Maryland
| | - Adebowale Adeyemo
- Center for Research on Genomics and Global Health, National Human Genome Research Institute, Bethesda, Maryland
| | - Charles N Rotimi
- Center for Research on Genomics and Global Health, National Human Genome Research Institute, Bethesda, Maryland
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25
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Pereira JB, Costa MD, Vieira D, Pala M, Bamford L, Harich N, Cherni L, Alshamali F, Hatina J, Rychkov S, Stefanescu G, King T, Torroni A, Soares P, Pereira L, Richards MB. Reconciling evidence from ancient and contemporary genomes: a major source for the European Neolithic within Mediterranean Europe. Proc Biol Sci 2018; 284:rspb.2016.1976. [PMID: 28330913 DOI: 10.1098/rspb.2016.1976] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 02/14/2017] [Indexed: 11/12/2022] Open
Abstract
Important gaps remain in our understanding of the spread of farming into Europe, due partly to apparent contradictions between studies of contemporary genetic variation and ancient DNA. It seems clear that farming was introduced into central, northern, and eastern Europe from the south by pioneer colonization. It is often argued that these dispersals originated in the Near East, where the potential source genetic pool resembles that of the early European farmers, but clear ancient DNA evidence from Mediterranean Europe is lacking, and there are suggestions that Mediterranean Europe may have resembled the Near East more than the rest of Europe in the Mesolithic. Here, we test this proposal by dating mitogenome founder lineages from the Near East in different regions of Europe. We find that whereas the lineages date mainly to the Neolithic in central Europe and Iberia, they largely date to the Late Glacial period in central/eastern Mediterranean Europe. This supports a scenario in which the genetic pool of Mediterranean Europe was partly a result of Late Glacial expansions from a Near Eastern refuge, and that this formed an important source pool for subsequent Neolithic expansions into the rest of Europe.
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Affiliation(s)
- Joana B Pereira
- Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK.,Instituto de Investigacão e Inovacão em Saúde (i3S), Universidade do Porto, Porto 4200-135, Portugal.,Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto 4200-465, Portugal
| | - Marta D Costa
- Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK.,Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto 4200-465, Portugal.,Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.,ICVS/3Bs-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Daniel Vieira
- Department of Biology, CBMA (Centre of Molecular and Environmental Biology), University of Minho, Braga, Portugal
| | - Maria Pala
- Department of Biological Sciences, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK
| | - Lisa Bamford
- Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK
| | - Nourdin Harich
- Laboratoire d'Anthropogenetique, Department de Biologie, Universite Chouaib Doukkali, El Jadida 24000, Morocco
| | - Lotfi Cherni
- Laboratory of Genetics, Immunology and Human Pathology, Faculté de Sciences de Tunis, Université de Tunis El Manar, Tunis 2092, Tunisia.,Tunis and High Institute of Biotechnology, University of Monastir, 5000 Monastir, Tunisia
| | - Farida Alshamali
- General Department of Forensic Sciences and Criminology, Dubai Police General Headquarters, Dubai 1493, United Arab Emirates
| | - Jiři Hatina
- Medical Faculty in Pilsen, Institute of Biology, Charles University, Pilsen, Czech Republic
| | | | | | - Turi King
- Department of Genetics, University of Leicester, Adrian Building, University Road, Leicester LE1 7RH, UK
| | - Antonio Torroni
- Dipartimento di Biologia e Biotecnologie 'L. Spallanzani', Università di Pavia, Pavia, Italy
| | - Pedro Soares
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto 4200-465, Portugal.,Department of Biology, CBMA (Centre of Molecular and Environmental Biology), University of Minho, Braga, Portugal
| | - Luísa Pereira
- Instituto de Investigacão e Inovacão em Saúde (i3S), Universidade do Porto, Porto 4200-135, Portugal.,Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto 4200-465, Portugal.,Faculdade de Medicina da Universidade do Porto, Porto 4200-319, Portugal
| | - Martin B Richards
- Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK .,Department of Biological Sciences, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK
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26
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Ajanovska RJ, Jakovski Z, Risteski S, Jovanovic H, Pavlovski G, Stankov A, Poposka V, Duma A. African L0a mtDNA haplogroup in Republic of Macedonia. FORENSIC SCIENCE INTERNATIONAL GENETICS SUPPLEMENT SERIES 2017. [DOI: 10.1016/j.fsigss.2017.09.130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Abstract
Although situated ∼400 km from the east coast of Africa, Madagascar exhibits cultural, linguistic, and genetic traits from both Southeast Asia and Eastern Africa. The settlement history remains contentious; we therefore used a grid-based approach to sample at high resolution the genomic diversity (including maternal lineages, paternal lineages, and genome-wide data) across 257 villages and 2,704 Malagasy individuals. We find a common Bantu and Austronesian descent for all Malagasy individuals with a limited paternal contribution from Europe and the Middle East. Admixture and demographic growth happened recently, suggesting a rapid settlement of Madagascar during the last millennium. However, the distribution of African and Asian ancestry across the island reveals that the admixture was sex biased and happened heterogeneously across Madagascar, suggesting independent colonization of Madagascar from Africa and Asia rather than settlement by an already admixed population. In addition, there are geographic influences on the present genomic diversity, independent of the admixture, showing that a few centuries is sufficient to produce detectable genetic structure in human populations.
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Houldcroft CJ, Ramond JB, Rifkin RF, Underdown SJ. Migrating microbes: what pathogens can tell us about population movements and human evolution. Ann Hum Biol 2017; 44:397-407. [PMID: 28511559 DOI: 10.1080/03014460.2017.1325515] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
BACKGROUND The biology of human migration can be observed from the co-evolutionary relationship with infectious diseases. While many pathogens are brief, unpleasant visitors to human bodies, others have the ability to become life-long human passengers. The story of a pathogen's genetic code may, therefore, provide insight into the history of its human host. The evolution and distribution of disease in Africa is of particular interest, because of the deep history of human evolution in Africa, the presence of a variety of non-human primates, and tropical reservoirs of emerging infectious diseases. METHODS This study explores which pathogens leave traces in the archaeological record, and whether there are realistic prospects that these pathogens can be recovered from sub-Saharan African archaeological contexts. RESULTS Three stories are then presented of germs on a journey. The first is the story of HIV's spread on the back of colonialism and the railway networks over the last 150 years. The second involves the spread of Schistosoma mansoni, a parasite which shares its history with the trans-Atlantic slave trade and the origins of fresh-water fishing. Finally, we discuss the tantalising hints of hominin migration and interaction found in the genome of human herpes simplex virus 2. CONCLUSIONS Evidence from modern African pathogen genomes can provide data on human behaviour and migration in deep time and contribute to the improvement of human quality-of-life and longevity.
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Affiliation(s)
- Charlotte J Houldcroft
- a Department of Archaeology and Anthropology, Division of Biological Anthropology , University of Cambridge , Cambridge , UK.,b McDonald Institute of Archaeological Research, University of Cambridge , Cambridge , UK
| | - Jean-Baptiste Ramond
- c Department of Genetics , Centre for Microbial Ecology and Genomics, Genomic Research Institute, University of Pretoria , Hatfield , South Africa
| | - Riaan F Rifkin
- c Department of Genetics , Centre for Microbial Ecology and Genomics, Genomic Research Institute, University of Pretoria , Hatfield , South Africa
| | - Simon J Underdown
- d Department of Anthropology & Geography, Human Origins and Palaeoenvironmental Research Group (HOPE) , Oxford Brookes University , Oxford , UK.,e Leverhulme Centre for Human Evolutionary Studies , Henry Wellcome Building , Cambridge , UK
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29
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Silva M, Oliveira M, Vieira D, Brandão A, Rito T, Pereira JB, Fraser RM, Hudson B, Gandini F, Edwards C, Pala M, Koch J, Wilson JF, Pereira L, Richards MB, Soares P. A genetic chronology for the Indian Subcontinent points to heavily sex-biased dispersals. BMC Evol Biol 2017; 17:88. [PMID: 28335724 PMCID: PMC5364613 DOI: 10.1186/s12862-017-0936-9] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 03/14/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND India is a patchwork of tribal and non-tribal populations that speak many different languages from various language families. Indo-European, spoken across northern and central India, and also in Pakistan and Bangladesh, has been frequently connected to the so-called "Indo-Aryan invasions" from Central Asia ~3.5 ka and the establishment of the caste system, but the extent of immigration at this time remains extremely controversial. South India, on the other hand, is dominated by Dravidian languages. India displays a high level of endogamy due to its strict social boundaries, and high genetic drift as a result of long-term isolation which, together with a very complex history, makes the genetic study of Indian populations challenging. RESULTS We have combined a detailed, high-resolution mitogenome analysis with summaries of autosomal data and Y-chromosome lineages to establish a settlement chronology for the Indian Subcontinent. Maternal lineages document the earliest settlement ~55-65 ka (thousand years ago), and major population shifts in the later Pleistocene that explain previous dating discrepancies and neutrality violation. Whilst current genome-wide analyses conflate all dispersals from Southwest and Central Asia, we were able to tease out from the mitogenome data distinct dispersal episodes dating from between the Last Glacial Maximum to the Bronze Age. Moreover, we found an extremely marked sex bias by comparing the different genetic systems. CONCLUSIONS Maternal lineages primarily reflect earlier, pre-Holocene processes, and paternal lineages predominantly episodes within the last 10 ka. In particular, genetic influx from Central Asia in the Bronze Age was strongly male-driven, consistent with the patriarchal, patrilocal and patrilineal social structure attributed to the inferred pastoralist early Indo-European society. This was part of a much wider process of Indo-European expansion, with an ultimate source in the Pontic-Caspian region, which carried closely related Y-chromosome lineages, a smaller fraction of autosomal genome-wide variation and an even smaller fraction of mitogenomes across a vast swathe of Eurasia between 5 and 3.5 ka.
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Affiliation(s)
- Marina Silva
- Department of Biological Sciences, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - Marisa Oliveira
- i3S (Instituto de Investigação e Inovação em Saúde, Universidade do Porto), R. Alfredo Allen 208, 4200-135, Porto, Portugal.,IPATIMUP (Instituto de Patologia e Imunologia Molecular da Universidade do Porto), Rua Júlio Amaral de Carvalho 45, 4200-135, Porto, Portugal
| | - Daniel Vieira
- Department of Informatics, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.,CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Andreia Brandão
- i3S (Instituto de Investigação e Inovação em Saúde, Universidade do Porto), R. Alfredo Allen 208, 4200-135, Porto, Portugal.,IPATIMUP (Instituto de Patologia e Imunologia Molecular da Universidade do Porto), Rua Júlio Amaral de Carvalho 45, 4200-135, Porto, Portugal
| | - Teresa Rito
- i3S (Instituto de Investigação e Inovação em Saúde, Universidade do Porto), R. Alfredo Allen 208, 4200-135, Porto, Portugal.,Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.,ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Joana B Pereira
- i3S (Instituto de Investigação e Inovação em Saúde, Universidade do Porto), R. Alfredo Allen 208, 4200-135, Porto, Portugal.,IPATIMUP (Instituto de Patologia e Imunologia Molecular da Universidade do Porto), Rua Júlio Amaral de Carvalho 45, 4200-135, Porto, Portugal
| | - Ross M Fraser
- Centre for Global Health Research, Usher Institute of Population Health Sciences and Informatics, University of Edinburgh, Teviot Place, Edinburgh, EH8 9AG, Scotland, UK.,Synpromics Ltd, Nine Edinburgh Bioquarter, Edinburgh, EH16 4UX, UK
| | - Bob Hudson
- Archaeology Department, University of Sydney, Sydney, NSW, 2006, Australia
| | - Francesca Gandini
- Department of Biological Sciences, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - Ceiridwen Edwards
- Department of Biological Sciences, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - Maria Pala
- Department of Biological Sciences, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - John Koch
- University of Wales Centre for Advanced Welsh and Celtic Studies, National Library of Wales, Aberystwyth, SY23 3HH, Wales, UK
| | - James F Wilson
- Centre for Global Health Research, Usher Institute of Population Health Sciences and Informatics, University of Edinburgh, Teviot Place, Edinburgh, EH8 9AG, Scotland, UK.,MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh, EH4 2XU, Scotland, UK
| | - Luísa Pereira
- i3S (Instituto de Investigação e Inovação em Saúde, Universidade do Porto), R. Alfredo Allen 208, 4200-135, Porto, Portugal.,IPATIMUP (Instituto de Patologia e Imunologia Molecular da Universidade do Porto), Rua Júlio Amaral de Carvalho 45, 4200-135, Porto, Portugal
| | - Martin B Richards
- Department of Biological Sciences, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK.
| | - Pedro Soares
- IPATIMUP (Instituto de Patologia e Imunologia Molecular da Universidade do Porto), Rua Júlio Amaral de Carvalho 45, 4200-135, Porto, Portugal. .,CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.
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30
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Uren C, Möller M, van Helden PD, Henn BM, Hoal EG. Population structure and infectious disease risk in southern Africa. Mol Genet Genomics 2017; 292:499-509. [PMID: 28229227 DOI: 10.1007/s00438-017-1296-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 02/01/2017] [Indexed: 02/06/2023]
Abstract
The KhoeSan populations are the earliest known indigenous inhabitants of southern Africa. The relatively recent expansion of Bantu-speaking agropastoralists, as well as European colonial settlement along the south-west coast, dramatically changed patterns of genetic diversity in a region which had been largely isolated for thousands of years. Owing to this unique history, population structure in southern Africa reflects both the underlying KhoeSan genetic diversity as well as differential recent admixture. This population structure has a wide range of biomedical and sociocultural implications; such as changes in disease risk profiles. Here, we consolidate information from various population genetic studies that characterize admixture patterns in southern Africa with an aim to better understand differences in adverse disease phenotypes observed among groups. Our review confirms that ancestry has a direct impact on an individual's immune response to infectious diseases. In addition, we emphasize the importance of collaborative research, especially for populations in southern Africa that have a high incidence of potentially fatal infectious diseases such as HIV and tuberculosis.
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Affiliation(s)
- Caitlin Uren
- SA MRC Centre for TB Research, DST/NRF Centre of Excellence for Biomedical Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medical and Health Sciences, Stellenbosch University, Tygerberg, Parow, 7500, South Africa
| | - Marlo Möller
- SA MRC Centre for TB Research, DST/NRF Centre of Excellence for Biomedical Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medical and Health Sciences, Stellenbosch University, Tygerberg, Parow, 7500, South Africa
| | - Paul D van Helden
- SA MRC Centre for TB Research, DST/NRF Centre of Excellence for Biomedical Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medical and Health Sciences, Stellenbosch University, Tygerberg, Parow, 7500, South Africa
| | - Brenna M Henn
- Department of Ecology and Evolution, Stony Brook University, Stony Brook, NY, 11794, USA
| | - Eileen G Hoal
- SA MRC Centre for TB Research, DST/NRF Centre of Excellence for Biomedical Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medical and Health Sciences, Stellenbosch University, Tygerberg, Parow, 7500, South Africa.
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31
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Azar A, Devlin K, Mell JC, Giovannetti T, Pirrone V, Nonnemacher MR, Passic S, Kercher K, Williams JW, Jacobson JM, Wigdahl B, Dampier W, Libon DJ, Sell C. Mitochondrial Haplogroup Influences Motor Function in Long-Term HIV-1-Infected Individuals. PLoS One 2016; 11:e0163772. [PMID: 27711166 PMCID: PMC5053473 DOI: 10.1371/journal.pone.0163772] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 09/14/2016] [Indexed: 12/19/2022] Open
Abstract
Evolutionary divergence of the mitochondrial genome has given rise to distinct haplogroups. These haplogroups have arisen in specific geographical locations and are responsible for subtle functional changes in the mitochondria that may provide an evolutionary advantage in a given environment. Based on these functional differences, haplogroups could define disease susceptibility in chronic settings. In this study, we undertook a detailed neuropsychological analysis of a cohort of long-term HIV-1-infected individuals in conjunction with sequencing of their mitochondrial genomes. Stepwise regression analysis showed that the best model for predicting both working memory and declarative memory were age and years since diagnosis. In contrast, years since diagnosis and sub-haplogroup were significantly predictive of psychomotor speed. Consistent with this, patients with haplogroup L3e obtained better scores on psychomotor speed and dexterity tasks when compared to the remainder of the cohort, suggesting that this haplogroup provides a protective advantage when faced with the combined stress of HIV-1 infection and long-term antiretroviral therapies. Differential performance on declarative memory tasks was noted for individuals with other sub-L haplogroups, but these differences were not as robust as the association between L3e and psychomotor speed and dexterity tasks. This work provides evidence that mitochondrial haplogroup is related to neuropsychological test performance among patients in chronic disease settings such as HIV-1 infection.
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Affiliation(s)
- Ashley Azar
- Department of Pathology, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Kathryn Devlin
- Department of Psychology, Temple University, Philadelphia, Pennsylvania, United States of America
| | - Joshua Chang Mell
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
- Center for Genomic Sciences, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Tania Giovannetti
- Department of Psychology, Temple University, Philadelphia, Pennsylvania, United States of America
| | - Vanessa Pirrone
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
- Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Michael R. Nonnemacher
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
- Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Shendra Passic
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
- Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Katherine Kercher
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
- Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Jean W. Williams
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
- Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Jeffery M. Jacobson
- Department of Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States of America
- Department of Neuroscience, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States of America
| | - Brian Wigdahl
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
- Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
- Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America
| | - William Dampier
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
- Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
| | - David J. Libon
- Department of Geriatrics and Gerontology, New Jersey Institute for Successful Aging, School of Osteopathic Medicine, Rowan University, Stratford, New Jersey, United States of America
| | - Christian Sell
- Department of Pathology, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
- * E-mail:
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32
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Tryon CA, Faith JT. A demographic perspective on the Middle to Later Stone Age transition from Nasera rockshelter, Tanzania. Philos Trans R Soc Lond B Biol Sci 2016; 371:20150238. [PMID: 27298469 PMCID: PMC4920295 DOI: 10.1098/rstb.2015.0238] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/06/2016] [Indexed: 11/12/2022] Open
Abstract
Increased population density is among the proposed drivers of the behavioural changes culminating in the Middle to Later Stone Age (MSA-LSA) transition and human dispersals from East Africa, but reliable archaeological measures of demographic change are lacking. We use Late Pleistocene-Holocene lithic and faunal data from Nasera rockshelter (Tanzania) to show progressive declines in residential mobility-a variable linked to population density-and technological shifts, the latter associated with environmental changes. These data suggest that the MSA-LSA transition is part of a long-term pattern of changes in residential mobility and technology that reflect human responses to increased population density, with dispersals potentially marking a complementary response to larger populations.This article is part of the themed issue 'Major transitions in human evolution'.
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Affiliation(s)
- Christian A Tryon
- Department of Anthropology, Harvard University, 11 Divinity Avenue, Cambridge, MA 02138, USA
| | - J Tyler Faith
- School of Social Science, University of Queensland, Michie Building (Level 3), Brisbane, Queensland 4072, Australia
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33
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Crevecoeur I, Brooks A, Ribot I, Cornelissen E, Semal P. Late Stone Age human remains from Ishango (Democratic Republic of Congo): New insights on Late Pleistocene modern human diversity in Africa. J Hum Evol 2016; 96:35-57. [PMID: 27343771 DOI: 10.1016/j.jhevol.2016.04.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Revised: 04/08/2016] [Accepted: 04/19/2016] [Indexed: 12/11/2022]
Abstract
Although questions of modern human origins and dispersal are subject to intense research within and outside Africa, the processes of modern human diversification during the Late Pleistocene are most often discussed within the context of recent human genetic data. This situation is due largely to the dearth of human fossil remains dating to the final Pleistocene in Africa and their almost total absence from West and Central Africa, thus limiting our perception of modern human diversification within Africa before the Holocene. Here, we present a morphometric comparative analysis of the earliest Late Pleistocene modern human remains from the Central African site of Ishango in the Democratic Republic of Congo. The early Late Stone Age layer (eLSA) of this site, dated to the Last Glacial Maximum (25-20 Ky), contains more than one hundred fragmentary human remains. The exceptional associated archaeological context suggests these remains derived from a community of hunter-fisher-gatherers exhibiting complex social and cognitive behaviors including substantial reliance on aquatic resources, development of fishing technology, possible mathematical notations and repetitive use of space, likely on a seasonal basis. Comparisons with large samples of Late Pleistocene and early Holocene modern human fossils from Africa and Eurasia show that the Ishango human remains exhibit distinctive characteristics and a higher phenotypic diversity in contrast to recent African populations. In many aspects, as is true for the inner ear conformation, these eLSA human remains have more affinities with Middle to early Late Pleistocene fossils worldwide than with extant local African populations. In addition, cross-sectional geometric properties of the long bones are consistent with archaeological evidence suggesting reduced terrestrial mobility resulting from greater investment in and use of aquatic resources. Our results on the Ishango human remains provide insights into past African modern human diversity and adaptation that are consistent with genetic theories about the deep sub-structure of Late Pleistocene African populations and their complex evolutionary history of isolation and diversification.
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Affiliation(s)
- I Crevecoeur
- UMR 5199 PACEA, CNRS, Université de Bordeaux, Pessac, France.
| | - A Brooks
- Department of Anthropology, George Washington University, Washington DC, USA
| | - I Ribot
- Département d'Anthropologie, Université de Montréal, Montréal, Canada
| | - E Cornelissen
- Culturele Antropologie/Prehistorie en Archeologie, Koninklijk Museum voor Midden-Afrika (KMMA), Tervuren, Belgium
| | - P Semal
- Scientific Service of Heritage, Royal Belgian Institute of Natural Sciences (RBINS), Brussels, Belgium
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34
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López S, van Dorp L, Hellenthal G. Human Dispersal Out of Africa: A Lasting Debate. Evol Bioinform Online 2016; 11:57-68. [PMID: 27127403 PMCID: PMC4844272 DOI: 10.4137/ebo.s33489] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Revised: 02/21/2016] [Accepted: 02/21/2016] [Indexed: 01/01/2023] Open
Abstract
Unraveling the first migrations of anatomically modern humans out of Africa has invoked great interest among researchers from a wide range of disciplines. Available fossil, archeological, and climatic data offer many hypotheses, and as such genetics, with the advent of genome-wide genotyping and sequencing techniques and an increase in the availability of ancient samples, offers another important tool for testing theories relating to our own history. In this review, we report the ongoing debates regarding how and when our ancestors left Africa, how many waves of dispersal there were and what geographical routes were taken. We explore the validity of each, using current genetic literature coupled with some of the key archeological findings.
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Affiliation(s)
- Saioa López
- Department of Genetics, Evolution and Environment, University College London, London, UK
| | - Lucy van Dorp
- Department of Genetics, Evolution and Environment, University College London, London, UK
- Centre for Mathematics and Physics in the Life Sciences and Experimental Biology (CoMPLEX), University College London, London, UK
| | - Garrett Hellenthal
- Department of Genetics, Evolution and Environment, University College London, London, UK
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35
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Hsieh P, Veeramah KR, Lachance J, Tishkoff SA, Wall JD, Hammer MF, Gutenkunst RN. Whole-genome sequence analyses of Western Central African Pygmy hunter-gatherers reveal a complex demographic history and identify candidate genes under positive natural selection. Genome Res 2016; 26:279-90. [PMID: 26888263 PMCID: PMC4772011 DOI: 10.1101/gr.192971.115] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 01/07/2016] [Indexed: 12/20/2022]
Abstract
African Pygmies practicing a mobile hunter-gatherer lifestyle are phenotypically and genetically diverged from other anatomically modern humans, and they likely experienced strong selective pressures due to their unique lifestyle in the Central African rainforest. To identify genomic targets of adaptation, we sequenced the genomes of four Biaka Pygmies from the Central African Republic and jointly analyzed these data with the genome sequences of three Baka Pygmies from Cameroon and nine Yoruba famers. To account for the complex demographic history of these populations that includes both isolation and gene flow, we fit models using the joint allele frequency spectrum and validated them using independent approaches. Our two best-fit models both suggest ancient divergence between the ancestors of the farmers and Pygmies, 90,000 or 150,000 yr ago. We also find that bidirectional asymmetric gene flow is statistically better supported than a single pulse of unidirectional gene flow from farmers to Pygmies, as previously suggested. We then applied complementary statistics to scan the genome for evidence of selective sweeps and polygenic selection. We found that conventional statistical outlier approaches were biased toward identifying candidates in regions of high mutation or low recombination rate. To avoid this bias, we assigned P-values for candidates using whole-genome simulations incorporating demography and variation in both recombination and mutation rates. We found that genes and gene sets involved in muscle development, bone synthesis, immunity, reproduction, cell signaling and development, and energy metabolism are likely to be targets of positive natural selection in Western African Pygmies or their recent ancestors.
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Affiliation(s)
- PingHsun Hsieh
- Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, Arizona 85721, USA
| | - Krishna R Veeramah
- Arizona Research Laboratories Division of Biotechnology, University of Arizona, Tucson, Arizona 85721, USA; Department of Ecology and Evolution, Stony Brook University, Stony Brook, New York 11794, USA
| | - Joseph Lachance
- Department of Biology and Genetics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA; Department of Biology, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - Sarah A Tishkoff
- Department of Biology and Genetics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Jeffrey D Wall
- Institute for Human Genetics, University of California, San Francisco, California 94143, USA
| | - Michael F Hammer
- Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, Arizona 85721, USA; Arizona Research Laboratories Division of Biotechnology, University of Arizona, Tucson, Arizona 85721, USA
| | - Ryan N Gutenkunst
- Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, Arizona 85721, USA; Department of Molecular and Cellular Biology, University of Arizona, Tucson, Arizona 85721, USA
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Brandão A, Eng KK, Rito T, Cavadas B, Bulbeck D, Gandini F, Pala M, Mormina M, Hudson B, White J, Ko TM, Saidin M, Zafarina Z, Oppenheimer S, Richards MB, Pereira L, Soares P. Quantifying the legacy of the Chinese Neolithic on the maternal genetic heritage of Taiwan and Island Southeast Asia. Hum Genet 2016; 135:363-376. [PMID: 26875094 PMCID: PMC4796337 DOI: 10.1007/s00439-016-1640-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 01/21/2016] [Indexed: 12/30/2022]
Abstract
There has been a long-standing debate concerning the extent to which the spread of Neolithic ceramics and Malay-Polynesian languages in Island Southeast Asia (ISEA) were coupled to an agriculturally driven demic dispersal out of Taiwan 4000 years ago (4 ka). We previously addressed this question using founder analysis of mitochondrial DNA (mtDNA) control-region sequences to identify major lineage clusters most likely to have dispersed from Taiwan into ISEA, proposing that the dispersal had a relatively minor impact on the extant genetic structure of ISEA, and that the role of agriculture in the expansion of the Austronesian languages was therefore likely to have been correspondingly minor. Here we test these conclusions by sequencing whole mtDNAs from across Taiwan and ISEA, using their higher chronological precision to resolve the overall proportion that participated in the "out-of-Taiwan" mid-Holocene dispersal as opposed to earlier, postglacial expansions in the Early Holocene. We show that, in total, about 20% of mtDNA lineages in the modern ISEA pool result from the "out-of-Taiwan" dispersal, with most of the remainder signifying earlier processes, mainly due to sea-level rises after the Last Glacial Maximum. Notably, we show that every one of these founder clusters previously entered Taiwan from China, 6-7 ka, where rice-farming originated, and remained distinct from the indigenous Taiwanese population until after the subsequent dispersal into ISEA.
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Affiliation(s)
- Andreia Brandão
- IPATIMUP (Institute of Molecular Pathology and Immunology of the University of Porto), Rua Dr. Roberto Frias s/n, 4200-465, Porto, Portugal
- i3S (Instituto de Investigação e Inovação em Saúde, Universidade do Porto), 4200, Porto, Portugal
- Department of Biological Sciences, School of Applied Sciences, University of Huddersfield Queensgate, Huddersfield, HD1 3DH, UK
- ICBAS (Instituto Ciências Biomédicas Abel Salazar), Universidade do Porto, Rua de Jorge Viterbo Ferreira n.º 228, 4050-313, Porto, Portugal
| | - Ken Khong Eng
- Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, UK
- Centre for Global Archaeological Research, Universiti Sains Malaysia, 11800, Penang, Malaysia
| | - Teresa Rito
- IPATIMUP (Institute of Molecular Pathology and Immunology of the University of Porto), Rua Dr. Roberto Frias s/n, 4200-465, Porto, Portugal
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Bruno Cavadas
- IPATIMUP (Institute of Molecular Pathology and Immunology of the University of Porto), Rua Dr. Roberto Frias s/n, 4200-465, Porto, Portugal
- i3S (Instituto de Investigação e Inovação em Saúde, Universidade do Porto), 4200, Porto, Portugal
| | - David Bulbeck
- Department of Archaeology and Natural History, College of Asia and the Pacific, The Australian National University, Acton ACT, Canberra, 2601, Australia
| | - Francesca Gandini
- Department of Biological Sciences, School of Applied Sciences, University of Huddersfield Queensgate, Huddersfield, HD1 3DH, UK
| | - Maria Pala
- Department of Biological Sciences, School of Applied Sciences, University of Huddersfield Queensgate, Huddersfield, HD1 3DH, UK
| | - Maru Mormina
- Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, UK
- Department of Applied Social Studies, University of Winchester, Sparkford Road, Winchester, SO22 4NR, UK
| | - Bob Hudson
- Archaeology Department, University of Sydney, New South Wales, 2006, Australia
| | - Joyce White
- Department of Anthropology, University of Pennsylvania Museum, 3260 South St., Philadelphia, USA
| | - Tsang-Ming Ko
- Department of Obstetrics and Gynecology, National Taiwan University, Roosevelt Rd., Taipei, 10617, Taiwan
| | - Mokhtar Saidin
- Centre for Global Archaeological Research, Universiti Sains Malaysia, 11800, Penang, Malaysia
| | - Zainuddin Zafarina
- Malaysian Institute of Pharmaceuticals and Nutraceuticals Malaysia, National Institutes of Biotechnology Malaysia, Penang, Malaysia
- Human Identification Unit, School of Health Sciences, Health Campus, Universiti Sains Malaysia, Kelantan, Malaysia
| | - Stephen Oppenheimer
- School of Anthropology, Institute of Human Sciences, The Pauling Centre, University of Oxford, 58a Banbury Road, Oxford, OX2 6QS, UK
| | - Martin B Richards
- Department of Biological Sciences, School of Applied Sciences, University of Huddersfield Queensgate, Huddersfield, HD1 3DH, UK.
- Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, UK.
| | - Luísa Pereira
- IPATIMUP (Institute of Molecular Pathology and Immunology of the University of Porto), Rua Dr. Roberto Frias s/n, 4200-465, Porto, Portugal
- i3S (Instituto de Investigação e Inovação em Saúde, Universidade do Porto), 4200, Porto, Portugal
- Faculty of Medicine, University of Porto, Al. Prof. Hernâni Monteiro, 4200-319, Porto, Portugal
| | - Pedro Soares
- IPATIMUP (Institute of Molecular Pathology and Immunology of the University of Porto), Rua Dr. Roberto Frias s/n, 4200-465, Porto, Portugal
- i3S (Instituto de Investigação e Inovação em Saúde, Universidade do Porto), 4200, Porto, Portugal
- Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, UK
- Department of Biology, CBMA (Centre of Molecular and Environmental Biology), University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
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Resolving the ancestry of Austronesian-speaking populations. Hum Genet 2016; 135:309-26. [PMID: 26781090 PMCID: PMC4757630 DOI: 10.1007/s00439-015-1620-z] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2015] [Accepted: 11/18/2015] [Indexed: 01/17/2023]
Abstract
There are two very different interpretations of the prehistory of Island Southeast Asia (ISEA), with genetic evidence invoked in support of both. The "out-of-Taiwan" model proposes a major Late Holocene expansion of Neolithic Austronesian speakers from Taiwan. An alternative, proposing that Late Glacial/postglacial sea-level rises triggered largely autochthonous dispersals, accounts for some otherwise enigmatic genetic patterns, but fails to explain the Austronesian language dispersal. Combining mitochondrial DNA (mtDNA), Y-chromosome and genome-wide data, we performed the most comprehensive analysis of the region to date, obtaining highly consistent results across all three systems and allowing us to reconcile the models. We infer a primarily common ancestry for Taiwan/ISEA populations established before the Neolithic, but also detected clear signals of two minor Late Holocene migrations, probably representing Neolithic input from both Mainland Southeast Asia and South China, via Taiwan. This latter may therefore have mediated the Austronesian language dispersal, implying small-scale migration and language shift rather than large-scale expansion.
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38
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Triska P, Soares P, Patin E, Fernandes V, Cerny V, Pereira L. Extensive Admixture and Selective Pressure Across the Sahel Belt. Genome Biol Evol 2015; 7:3484-95. [PMID: 26614524 PMCID: PMC4700964 DOI: 10.1093/gbe/evv236] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Genome-wide studies of African populations have the potential to reveal powerful insights into the evolution of our species, as these diverse populations have been exposed to intense selective pressures imposed by infectious diseases, diet, and environmental factors. Within Africa, the Sahel Belt extensively overlaps the geographical center of several endemic infections such as malaria, trypanosomiasis, meningitis, and hemorrhagic fevers. We screened 2.5 million single nucleotide polymorphisms in 161 individuals from 13 Sahelian populations, which together with published data cover Western, Central, and Eastern Sahel, and include both nomadic and sedentary groups. We confirmed the role of this Belt as a main corridor for human migrations across the continent. Strong admixture was observed in both Central and Eastern Sahelian populations, with North Africans and Near Eastern/Arabians, respectively, but it was inexistent in Western Sahelian populations. Genome-wide local ancestry inference in admixed Sahelian populations revealed several candidate regions that were significantly enriched for non-autochthonous haplotypes, and many showed to be under positive selection. The DARC gene region in Arabs and Nubians was enriched for African ancestry, whereas the RAB3GAP1/LCT/MCM6 region in Oromo, the TAS2R gene family in Fulani, and the ALMS1/NAT8 in Turkana and Samburu were enriched for non-African ancestry. Signals of positive selection varied in terms of geographic amplitude. Some genomic regions were selected across the Belt, the most striking example being the malaria-related DARC gene. Others were Western-specific (oxytocin, calcium, and heart pathways), Eastern-specific (lipid pathways), or even population-restricted (TAS2R genes in Fulani, which may reflect sexual selection).
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Affiliation(s)
- Petr Triska
- Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Porto, Portugal Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal Instituto de Ciências Biomédicas Abel Salazar da Universidade do Porto (ICBAS), Porto, Portugal
| | - Pedro Soares
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal Department of Biology, CBMA (Centre of Molecular and Environmental Biology), University of Minho, Braga, Portugal
| | - Etienne Patin
- Unit of Human Evolutionary Genetics, Institut Pasteur, Paris, France Centre National de la Recherche Scientifique, Paris, France
| | - Veronica Fernandes
- Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Porto, Portugal Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal
| | - Viktor Cerny
- Archaeogenetics Laboratory, Institute of Archaeology of the Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Luisa Pereira
- Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Porto, Portugal Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal Faculdade de Medicina da Universidade do Porto, Porto, Portugal
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Hernández CL, Soares P, Dugoujon JM, Novelletto A, Rodríguez JN, Rito T, Oliveira M, Melhaoui M, Baali A, Pereira L, Calderón R. Early Holocenic and Historic mtDNA African Signatures in the Iberian Peninsula: The Andalusian Region as a Paradigm. PLoS One 2015; 10:e0139784. [PMID: 26509580 PMCID: PMC4624789 DOI: 10.1371/journal.pone.0139784] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 09/17/2015] [Indexed: 11/18/2022] Open
Abstract
Determining the timing, identity and direction of migrations in the Mediterranean Basin, the role of "migratory routes" in and among regions of Africa, Europe and Asia, and the effects of sex-specific behaviors of population movements have important implications for our understanding of the present human genetic diversity. A crucial component of the Mediterranean world is its westernmost region. Clear features of transcontinental ancient contacts between North African and Iberian populations surrounding the maritime region of Gibraltar Strait have been identified from archeological data. The attempt to discern origin and dates of migration between close geographically related regions has been a challenge in the field of uniparental-based population genetics. Mitochondrial DNA (mtDNA) studies have been focused on surveying the H1, H3 and V lineages when trying to ascertain north-south migrations, and U6 and L in the opposite direction, assuming that those lineages are good proxies for the ancestry of each side of the Mediterranean. To this end, in the present work we have screened entire mtDNA sequences belonging to U6, M1 and L haplogroups in Andalusians--from Huelva and Granada provinces--and Moroccan Berbers. We present here pioneer data and interpretations on the role of NW Africa and the Iberian Peninsula regarding the time of origin, number of founders and expansion directions of these specific markers. The estimated entrance of the North African U6 lineages into Iberia at 10 ky correlates well with other L African clades, indicating that U6 and some L lineages moved together from Africa to Iberia in the Early Holocene. Still, founder analysis highlights that the high sharing of lineages between North Africa and Iberia results from a complex process continued through time, impairing simplistic interpretations. In particular, our work supports the existence of an ancient, frequently denied, bridge connecting the Maghreb and Andalusia.
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Affiliation(s)
- Candela L. Hernández
- Departamento de Zoología y Antropología Física, Facultad de Biología, Universidad Complutense, Madrid, Spain
| | - Pedro Soares
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Braga, Portugal
| | - Jean M. Dugoujon
- CNRS UMR 5288 Laboratoire d’Anthropologie Moléculaire et d’Imagerie de Synthèse (AMIS), Université Paul Sabatier Toulouse III, 31073 Toulouse, France
| | - Andrea Novelletto
- Dipartimento di Biologia, Università Tor Vergata di Rome, Rome, Italy
| | | | - Teresa Rito
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal
| | - Marisa Oliveira
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal
| | | | - Abdellatif Baali
- Faculté des Sciences Semlalia de Marrakech (FSSM), Université Cadi Ayyad, Marrakech, Morocco
| | - Luisa Pereira
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- Faculdade de Medicina da Universidade do Porto, Porto, Portugal
| | - Rosario Calderón
- Departamento de Zoología y Antropología Física, Facultad de Biología, Universidad Complutense, Madrid, Spain
- * E-mail:
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Cerezo M, Gusmão L, Černý V, Uddin N, Syndercombe-Court D, Gómez-Carballa A, Göbel T, Schneider PM, Salas A. Comprehensive Analysis of Pan-African Mitochondrial DNA Variation Provides New Insights into Continental Variation and Demography. J Genet Genomics 2015; 43:133-43. [PMID: 27020033 DOI: 10.1016/j.jgg.2015.09.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 07/30/2015] [Accepted: 09/15/2015] [Indexed: 01/15/2023]
Abstract
Africa is the cradle of all human beings, and although it has been the focus of a number of genetic studies, there are many questions that remain unresolved. We have performed one of the largest and most comprehensive meta-analyses of mitochondrial DNA (mtDNA) lineages carried out in the African continent to date. We generated high-throughput mtDNA single nucleotide polymorphism (SNP) data (230 SNPs) from 2024 Africans, where more than 500 of them were additionally genotyped for the control region. These data were analyzed together with over 12,700 control region profiles collected from the literature, representing more than 300 population samples from Africa. Insights into the African homeland of humans are discussed. Phylogeographic patterns for the African continent are shown at a high phylogeographic resolution as well as at the population and regional levels. The deepest branch of the mtDNA tree, haplogroup L0, shows the highest sub-haplogroup diversity in Southeast and East Africa, suggesting this region as the homeland for modern humans. Several demographic estimates point to the coast as a facilitator of human migration in Africa, but the data indicate complex patterns, perhaps mirroring the effect of recent continental-scaled demographic events in re-shaping African mtDNA variability.
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Affiliation(s)
- María Cerezo
- Unidade de Xenética, Departamento de Anatomía Patolóxica e Ciencias Forenses, Instituto de Medicina Legal, Facultade de Medicina, Universidade de Santiago de Compostela, Galicia 15782, Spain; The Wellcome Trust Sanger Institute, Hinxton CB10 1SA, UK
| | - Leonor Gusmão
- DNA Diagnostic Laboratory, Institute of Biology, State University of Rio de Janeiro, Rio de Janeiro 20550-900, Brazil; IPATIMUP Institute of Molecular Pathology and Immunology of the University of Porto, Porto 4200-465, Portugal
| | - Viktor Černý
- Archaeogenetics Laboratory, Institute of Archaeology of the Academy of Sciences of the Czech Republic, Prague 118-01, Czech Republic
| | - Nabeel Uddin
- Faculty of Life Sciences and Medicine, King's College London, London SE1 9NH, UK
| | | | - Alberto Gómez-Carballa
- Unidade de Xenética, Departamento de Anatomía Patolóxica e Ciencias Forenses, Instituto de Medicina Legal, Facultade de Medicina, Universidade de Santiago de Compostela, Galicia 15782, Spain
| | - Tanja Göbel
- Institute of Legal Medicine, Medical Faculty, University of Cologne, Cologne D-50823, Germany
| | - Peter M Schneider
- Institute of Legal Medicine, Medical Faculty, University of Cologne, Cologne D-50823, Germany
| | - Antonio Salas
- Unidade de Xenética, Departamento de Anatomía Patolóxica e Ciencias Forenses, Instituto de Medicina Legal, Facultade de Medicina, Universidade de Santiago de Compostela, Galicia 15782, Spain.
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41
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Cavadas B, Soares P, Camacho R, Brandão A, Costa MD, Fernandes V, Pereira JB, Rito T, Samuels DC, Pereira L. Fine Time Scaling of Purifying Selection on Human Nonsynonymous mtDNA Mutations Based on the Worldwide Population Tree and Mother-Child Pairs. Hum Mutat 2015; 36:1100-11. [DOI: 10.1002/humu.22849] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 07/20/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Bruno Cavadas
- Instituto de Investigação e Inovação em Saúde (i3S); Universidade do Porto; Porto 4200-135 Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP); Porto 4200-465 Portugal
| | - Pedro Soares
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP); Porto 4200-465 Portugal
- Department of Biology; CBMA (Centre of Molecular and Environmental Biology); University of Minho; Braga 4704-553 Portugal
| | - Rui Camacho
- INESC TEC; Porto 4200-465 Portugal
- Departamento de Engenharia Informática; Faculdade de Engenharia da Universidade do Porto; Porto 4200-465 Portugal
| | - Andreia Brandão
- Instituto de Investigação e Inovação em Saúde (i3S); Universidade do Porto; Porto 4200-135 Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP); Porto 4200-465 Portugal
- Instituto de Ciências Biomédicas Abel Salazar da Universidade do Porto (ICBAS); Porto 4050-313 Portugal
| | - Marta D. Costa
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP); Porto 4200-465 Portugal
| | - Verónica Fernandes
- Instituto de Investigação e Inovação em Saúde (i3S); Universidade do Porto; Porto 4200-135 Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP); Porto 4200-465 Portugal
| | - Joana B. Pereira
- Instituto de Investigação e Inovação em Saúde (i3S); Universidade do Porto; Porto 4200-135 Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP); Porto 4200-465 Portugal
| | - Teresa Rito
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP); Porto 4200-465 Portugal
| | - David C. Samuels
- Vanderbilt Genetics Institute; Department of Molecular Physiology and Biophysics; Vanderbilt University Medical Center; Nashville Tennessee 37232-0700
| | - Luisa Pereira
- Instituto de Investigação e Inovação em Saúde (i3S); Universidade do Porto; Porto 4200-135 Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP); Porto 4200-465 Portugal
- Faculdade de Medicina da Universidade do Porto; Porto 4200-319 Portugal
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42
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Whole mitochondrial genome genetic diversity in an Estonian population sample. Int J Legal Med 2015; 130:67-71. [PMID: 26289416 DOI: 10.1007/s00414-015-1249-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Accepted: 08/12/2015] [Indexed: 10/23/2022]
Abstract
Mitochondrial DNA is a useful marker for population studies, human identification, and forensic analysis. Commonly used hypervariable regions I and II (HVI/HVII) were reported to contain as little as 25% of mitochondrial DNA variants and therefore the majority of power of discrimination of mitochondrial DNA resides in the coding region. Massively parallel sequencing technology enables entire mitochondrial genome sequencing. In this study, buccal swabs were collected from 114 unrelated Estonians and whole mitochondrial genome sequences were generated using the Illumina MiSeq system. The results are concordant with previous mtDNA control region reports of high haplogroup HV and U frequencies (47.4 and 23.7% in this study, respectively) in the Estonian population. One sample with the Northern Asian haplogroup D was detected. The genetic diversity of the Estonian population sample was estimated to be 99.67 and 95.85%, for mtGenome and HVI/HVII data, respectively. The random match probability for mtGenome data was 1.20 versus 4.99% for HVI/HVII. The nucleotide mean pairwise difference was 27 ± 11 for mtGenome and 7 ± 3 for HVI/HVII data. These data describe the genetic diversity of the Estonian population sample and emphasize the power of discrimination of the entire mitochondrial genome over the hypervariable regions.
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43
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Trombetta B, D'Atanasio E, Massaia A, Myres NM, Scozzari R, Cruciani F, Novelletto A. Regional Differences in the Accumulation of SNPs on the Male-Specific Portion of the Human Y Chromosome Replicate Autosomal Patterns: Implications for Genetic Dating. PLoS One 2015; 10:e0134646. [PMID: 26226630 PMCID: PMC4520482 DOI: 10.1371/journal.pone.0134646] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Accepted: 07/10/2015] [Indexed: 12/21/2022] Open
Abstract
Factors affecting the rate and pattern of the mutational process are being identified for human autosomes, but the same relationships for the male specific portion of the Y chromosome (MSY) are not established. We considered 3,390 mutations occurring in 19 sequence bins identified by sequencing 1.5 Mb of the MSY from each of 104 present-day chromosomes. The occurrence of mutations was not proportional to the amount of sequenced bases in each bin, with a 2-fold variation. The regression of the number of mutations per unit sequence against a number of indicators of the genomic features of each bin, revealed the same fundamental patterns as in the autosomes. By considering the sequences of the same region from two precisely dated ancient specimens, we obtained a calibrated region-specific substitution rate of 0.716 × 10-9/site/year. Despite its lack of recombination and other peculiar features, the MSY then resembles the autosomes in displaying a marked regional heterogeneity of the mutation rate. An immediate implication is that a given figure for the substitution rate only makes sense if bound to a specific DNA region. By strictly applying this principle we obtained an unbiased estimate of the antiquity of lineages relevant to the genetic history of the human Y chromosome. In particular, the two deepest nodes of the tree highlight the survival, in Central-Western Africa, of lineages whose coalescence (291 ky, 95% C.I. 253-343) predates the emergence of anatomically modern features in the fossil record.
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Affiliation(s)
- Beniamino Trombetta
- Dipartimento di Biologia e Biotecnologie “C. Darwin”, Sapienza Università di Roma, Rome, Italy
| | - Eugenia D'Atanasio
- Dipartimento di Biologia e Biotecnologie “C. Darwin”, Sapienza Università di Roma, Rome, Italy
| | - Andrea Massaia
- Dipartimento di Biologia e Biotecnologie “C. Darwin”, Sapienza Università di Roma, Rome, Italy
| | | | - Rosaria Scozzari
- Dipartimento di Biologia e Biotecnologie “C. Darwin”, Sapienza Università di Roma, Rome, Italy
| | - Fulvio Cruciani
- Dipartimento di Biologia e Biotecnologie “C. Darwin”, Sapienza Università di Roma, Rome, Italy
- Istituto di Biologia e Patologia Molecolari, Consiglio Nazionale delle Ricerche, Rome, Italy
| | - Andrea Novelletto
- Dipartimento di Biologia, Università di Roma “Tor Vergata”, Rome, Italy
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60,000 years of interactions between Central and Eastern Africa documented by major African mitochondrial haplogroup L2. Sci Rep 2015. [PMID: 26211407 PMCID: PMC4515592 DOI: 10.1038/srep12526] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Mitochondrial DNA (mtDNA) haplogroup L2 originated in Western Africa but is nowadays spread across the entire continent. L2 movements were previously postulated to be related to the Bantu expansion, but L2 expansions eastwards probably occurred much earlier. By reconstructing the phylogeny of L2 (44 new complete sequences) we provide insights on the complex net of within-African migrations in the last 60 thousand years (ka). Results show that lineages in Southern Africa cluster with Western/Central African lineages at a recent time scale, whereas, eastern lineages seem to be substantially more ancient. Three moments of expansion from a Central African source are associated to L2: (1) one migration at 70–50 ka into Eastern or Southern Africa, (2) postglacial movements (15–10 ka) into Eastern Africa; and (3) the southward Bantu Expansion in the last 5 ka. The complementary population and L0a phylogeography analyses indicate no strong evidence of mtDNA gene flow between eastern and southern populations during the later movement, suggesting low admixture between Eastern African populations and the Bantu migrants. This implies that, at least in the early stages, the Bantu expansion was mainly a demic diffusion with little incorporation of local populations.
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Gomes V, Pala M, Salas A, Álvarez-Iglesias V, Amorim A, Gómez-Carballa A, Carracedo Á, Clarke DJ, Hill C, Mormina M, Shaw MA, Dunne DW, Pereira R, Pereira V, Prata MJ, Sánchez-Diz P, Rito T, Soares P, Gusmão L, Richards MB. Mosaic maternal ancestry in the Great Lakes region of East Africa. Hum Genet 2015; 134:1013-27. [PMID: 26188410 DOI: 10.1007/s00439-015-1583-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 07/04/2015] [Indexed: 01/21/2023]
Abstract
The Great Lakes lie within a region of East Africa with very high human genetic diversity, home of many ethno-linguistic groups usually assumed to be the product of a small number of major dispersals. However, our knowledge of these dispersals relies primarily on the inferences of historical, linguistics and oral traditions, with attempts to match up the archaeological evidence where possible. This is an obvious area to which archaeogenetics can contribute, yet Uganda, at the heart of these developments, has not been studied for mitochondrial DNA (mtDNA) variation. Here, we compare mtDNA lineages at this putative genetic crossroads across 409 representatives of the major language groups: Bantu speakers and Eastern and Western Nilotic speakers. We show that Uganda harbours one of the highest mtDNA diversities within and between linguistic groups, with the various groups significantly differentiated from each other. Despite an inferred linguistic origin in South Sudan, the data from the two Nilotic-speaking groups point to a much more complex history, involving not only possible dispersals from Sudan and the Horn but also large-scale assimilation of autochthonous lineages within East Africa and even Uganda itself. The Eastern Nilotic group also carries signals characteristic of West-Central Africa, primarily due to Bantu influence, whereas a much stronger signal in the Western Nilotic group suggests direct West-Central African ancestry. Bantu speakers share lineages with both Nilotic groups, and also harbour East African lineages not found in Western Nilotic speakers, likely due to assimilating indigenous populations since arriving in the region ~3000 years ago.
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Affiliation(s)
- Verónica Gomes
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
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Paleoenvironmental context of the Middle Stone Age record from Karungu, Lake Victoria Basin, Kenya, and its implications for human and faunal dispersals in East Africa. J Hum Evol 2015; 83:28-45. [DOI: 10.1016/j.jhevol.2015.03.004] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 03/11/2015] [Accepted: 03/12/2015] [Indexed: 01/12/2023]
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Maternal ancestry and population history from whole mitochondrial genomes. INVESTIGATIVE GENETICS 2015; 6:3. [PMID: 25798216 PMCID: PMC4367903 DOI: 10.1186/s13323-015-0022-2] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Accepted: 02/04/2015] [Indexed: 01/12/2023]
Abstract
MtDNA has been a widely used tool in human evolutionary and population genetic studies over the past three decades. Its maternal inheritance and lack of recombination have offered the opportunity to explore genealogical relationships among individuals and to study the frequency differences of matrilineal clades among human populations at continental and regional scales. The whole mtDNA genome sequencing delivers molecular resolution that is sufficient to distinguish patterns that have arisen over thousands of years. However, mutation rate is highly variable among the functional and non-coding domains of mtDNA which makes it challenging to obtain accurate split dates of the mitochondrial clades. Due to the shallow coalescent time of mitochondrial TMRCA at approximately 100 to 200 thousand years (ky), mtDNA data have only limited power to inform us about the more distant past and the early stages of human evolutionary history. The variation shared by mitochondrial genomes of individuals drawn from different continents outside Africa has been used to illuminate the details of the colonization process of the Old World, whereas regional patterns of variation have been at the focus of studies addressing questions of a more recent time scale. In the era of whole nuclear genome sequencing, mitochondrial genomes are continuing to be informative as a unique tool for the assessment of female-specific aspects of the demographic history of human populations.
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48
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Fernandes V, Triska P, Pereira JB, Alshamali F, Rito T, Machado A, Fajkošová Z, Cavadas B, Černý V, Soares P, Richards MB, Pereira L. Genetic stratigraphy of key demographic events in Arabia. PLoS One 2015; 10:e0118625. [PMID: 25738654 PMCID: PMC4349752 DOI: 10.1371/journal.pone.0118625] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Accepted: 01/21/2015] [Indexed: 01/01/2023] Open
Abstract
At the crossroads between Africa and Eurasia, Arabia is necessarily a melting pot, its peoples enriched by successive gene flow over the generations. Estimating the timing and impact of these multiple migrations are important steps in reconstructing the key demographic events in the human history. However, current methods based on genome-wide information identify admixture events inefficiently, tending to estimate only the more recent ages, as here in the case of admixture events across the Red Sea (∼8–37 generations for African input into Arabia, and 30–90 generations for “back-to-Africa” migrations). An mtDNA-based founder analysis, corroborated by detailed analysis of the whole-mtDNA genome, affords an alternative means by which to identify, date and quantify multiple migration events at greater time depths, across the full range of modern human history, albeit for the maternal line of descent only. In Arabia, this approach enables us to infer several major pulses of dispersal between the Near East and Arabia, most likely via the Gulf corridor. Although some relict lineages survive in Arabia from the time of the out-of-Africa dispersal, 60 ka, the major episodes in the peopling of the Peninsula took place from north to south in the Late Glacial and, to a lesser extent, the immediate post-glacial/Neolithic. Exchanges across the Red Sea were mainly due to the Arab slave trade and maritime dominance (from ∼2.5 ka to very recent times), but had already begun by the early Holocene, fuelled by the establishment of maritime networks since ∼8 ka. The main “back-to-Africa” migrations, again undetected by genome-wide dating analyses, occurred in the Late Glacial period for introductions into eastern Africa, whilst the Neolithic was more significant for migrations towards North Africa.
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Affiliation(s)
- Verónica Fernandes
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal
- School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
| | - Petr Triska
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal
- Instituto de Ciências Biomédicas da Universidade do Porto (ICBAS), Porto, Portugal
| | - Joana B. Pereira
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal
- School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
| | - Farida Alshamali
- General Department of Forensic Sciences and Criminology, Dubai Police General Headquarters, Dubai, United Arab Emirates
| | - Teresa Rito
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal
| | - Alison Machado
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal
| | - Zuzana Fajkošová
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal
- Archaeogenetics Laboratory, Institute of Archaeology of the Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Bruno Cavadas
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal
| | - Viktor Černý
- Archaeogenetics Laboratory, Institute of Archaeology of the Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Pedro Soares
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal
| | - Martin B. Richards
- School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
- Department of Biological Sciences, School of Applied Sciences, University of Huddersfield, Huddersfield, United Kingdom
| | - Luísa Pereira
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal
- Faculdade de Medicina da Universidade do Porto, Porto, Portugal
- * E-mail:
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Tryon CA, Crevecoeur I, Faith JT, Ekshtain R, Nivens J, Patterson D, Mbua EN, Spoor F. Late Pleistocene age and archaeological context for the hominin calvaria from GvJm-22 (Lukenya Hill, Kenya). Proc Natl Acad Sci U S A 2015; 112:2682-7. [PMID: 25730861 PMCID: PMC4352791 DOI: 10.1073/pnas.1417909112] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Kenya National Museums Lukenya Hill Hominid 1 (KNM-LH 1) is a Homo sapiens partial calvaria from site GvJm-22 at Lukenya Hill, Kenya, associated with Later Stone Age (LSA) archaeological deposits. KNM-LH 1 is securely dated to the Late Pleistocene, and samples a time and region important for understanding the origins of modern human diversity. A revised chronology based on 26 accelerator mass spectrometry radiocarbon dates on ostrich eggshells indicates an age range of 23,576-22,887 y B.P. for KNM-LH 1, confirming prior attribution to the Last Glacial Maximum. Additional dates extend the maximum age for archaeological deposits at GvJm-22 to >46,000 y B.P. (>46 kya). These dates are consistent with new analyses identifying both Middle Stone Age and LSA lithic technologies at the site, making GvJm-22 a rare eastern African record of major human behavioral shifts during the Late Pleistocene. Comparative morphometric analyses of the KNM-LH 1 cranium document the temporal and spatial complexity of early modern human morphological variability. Features of cranial shape distinguish KNM-LH 1 and other Middle and Late Pleistocene African fossils from crania of recent Africans and samples from Holocene LSA and European Upper Paleolithic sites.
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Affiliation(s)
- Christian A Tryon
- Department of Anthropology, Harvard University, Cambridge, MA 02138;
| | - Isabelle Crevecoeur
- Unité Mixte de Recherche 5199, de la Préhistoire à l'Actuel: Culture, Environnement, et Anthropologie, Centre National de la Recherche Scientifique, Université de Bordeaux, 33615 Talence, France
| | - J Tyler Faith
- Archaeology Program, School of Social Science, University of Queensland, Brisbane, QLD 4072, Australia
| | - Ravid Ekshtain
- Department of Anthropology, Harvard University, Cambridge, MA 02138
| | - Joelle Nivens
- Department of Anthropology, New York University, New York, NY 10003
| | - David Patterson
- Center for the Advanced Study of Hominid Paleobiology, Department of Anthropology, The George Washington University, Washington, DC 20052
| | - Emma N Mbua
- National Museums of Kenya, Nairobi, Kenya 00100
| | - Fred Spoor
- Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, D-04103, Leipzig, Germany; and Department of Cell and Developmental Biology, University College London, WC1E 6BT London, United Kingdom
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50
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Pereira L, Soares P, Triska P, Rito T, van der Waerden A, Li B, Radivojac P, Samuels DC. Global human frequencies of predicted nuclear pathogenic variants and the role played by protein hydrophobicity in pathogenicity potential. Sci Rep 2014; 4:7155. [PMID: 25412673 PMCID: PMC4239565 DOI: 10.1038/srep07155] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 11/05/2014] [Indexed: 11/30/2022] Open
Abstract
Mitochondrial proteins are coded by nuclear (nDNA) and mitochondrial (mtDNA) genes, implying a complex cross-talk between the two genomes. Here we investigated the diversity displayed in 104 nuclear-coded mitochondrial proteins from 1,092 individuals from the 1000 Genomes dataset, in order to evaluate if these genes are under the effects of purifying selection and how that selection compares with their mitochondrial encoded counterparts. Only the very rare variants (frequency < 0.1%) in these nDNA genes are indistinguishable from a random set from all possible variants in terms of predicted pathogenicity score, but more frequent variants display distinct signs of purifying selection. Comparisons of selection strength indicate stronger selection in the mtDNA genes compared to this set of nDNA genes, accounted for by the high hydrophobicity of the proteins coded by the mtDNA. Most of the predicted pathogenic variants in the nDNA genes were restricted to a single continental population. The proportion of individuals having at least one potential pathogenic mutation in this gene set was significantly lower in Europeans than in Africans and Asians. This difference may reflect demographic asymmetries, since African and Asian populations experienced main expansions in middle Holocene, while in Europeans the main expansions occurred earlier in the post-glacial period.
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Affiliation(s)
- Luísa Pereira
- 1] Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto 4200-465, Portugal [2] Faculdade de Medicina da Universidade do Porto, Porto 4200-319, Portugal
| | - Pedro Soares
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto 4200-465, Portugal
| | - Petr Triska
- 1] Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto 4200-465, Portugal [2] Instituto de Ciências Biomédicas da Universidade do Porto (ICBAS), Porto 4050-313, Portugal
| | - Teresa Rito
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto 4200-465, Portugal
| | - Agnes van der Waerden
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto 4200-465, Portugal
| | - Biao Li
- School of Informatics and Computing, Indiana University, Bloomington, IN 47405, USA
| | - Predrag Radivojac
- School of Informatics and Computing, Indiana University, Bloomington, IN 47405, USA
| | - David C Samuels
- Center for Human Genetics Research, Department of Molecular Physiology and Biophysics, Vanderbilt University Medical Center, Nashville, TN 37232-0700, USA
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