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Mastrangelo S, Biscarini F, Riggio S, Ragatzu M, Spaterna A, Cendron F, Ciampolini R. Genome-wide association study for morphological and hunting-behavior traits in Braque Français Type Pyrénées dogs: A preliminary study. Vet J 2024; 306:106189. [PMID: 38945428 DOI: 10.1016/j.tvjl.2024.106189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 06/21/2024] [Accepted: 06/24/2024] [Indexed: 07/02/2024]
Abstract
High-throughput genotyping offers great potential to increase our understanding of the genomic basis of canid variation. Braque Français Type Pyrénées (BRA) are smart, agile, and friendly dogs originally developed for tracking, hunting, and retrieving feathered game. On a population of 44 unrelated BRA dogs, single nucleotide polymorphism (SNP) genotype data from the CanineHD Whole-Genome Genotyping BeadChip and evaluation scores for 12 traits related to morphology and hunting performance were available. After quality filtering, 95,859 SNPs on the 38 dog autosomes (CFA) were retained. Phenotypic scores were expressed on a scale from 1 (worst) to 6 (best) and were mostly poorly to moderately correlated except for some morphological traits (e.g. r = 0.81 between the conformation of the head and that of the eye). From GWAS, a total of 378 SNP-phenotype associations with posterior odds of association > 1 have been detected. The strongest associations were found for the eye conformation, for the skull/muzzle ratio, and for connection to the hunter. These included both new and previously identified markers and genes potentially involved with type and behavior traits in BRA. Six of the significant markers mapped within SETDB2, a gene known to be related to pointing behavior in dogs. These results advance our understanding of the genetic basis for morphology and hunting behavior in dogs and identify new variants which are potential targets for further research.
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Affiliation(s)
- Salvatore Mastrangelo
- Dipartimento Scienze Agrarie, Alimentari e Forestali, Università degli Studi di Palermo, 90128 Palermo, Italy
| | - Filippo Biscarini
- Istituto di Biologia e Biotecnologia Agraria, Consiglio Nazionale delle Ricerche (CNR-IBBA), 20133 Milano, Italy.
| | - Silvia Riggio
- Dipartimento Scienze Agrarie, Alimentari e Forestali, Università degli Studi di Palermo, 90128 Palermo, Italy
| | - Marco Ragatzu
- Club Italiano Braque Francais Type Pyrénées dogs, 58011 Capalbio (GR), Italy
| | - Andrea Spaterna
- Scuola di Scienze Mediche Veterinarie, Università di Camerino, 62024 Matelica, MC, Italy
| | - Filippo Cendron
- Department of Agronomy, Food, Natural resources, Animals and Environment (DAFNAE), University of Padova, Viale dell'Università 16, 35020 Legnaro (PD), Italy
| | - Roberta Ciampolini
- Dipartimento di Scienze Veterinarie, Università di Pisa, 56124 Pisa, Italy
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Bionda A, Cortellari M, Liotta L, Crepaldi P. The Shepherd and the Hunter: A Genomic Comparison of Italian Dog Breeds. Animals (Basel) 2023; 13:2438. [PMID: 37570247 PMCID: PMC10417656 DOI: 10.3390/ani13152438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 07/24/2023] [Accepted: 07/25/2023] [Indexed: 08/13/2023] Open
Abstract
Shepherd and hunting dogs have undergone divergent selection for specific tasks, resulting in distinct phenotypic and behavioural differences. Italy is home to numerous recognized and unrecognized breeds of both types, providing an opportunity to compare them genomically. In this study, we analysed SNP data obtained from the CanineHD BeadChip, encompassing 116 hunting dogs (representing 6 breeds) and 158 shepherd dogs (representing 9 breeds). We explored the population structure, genomic background, and phylogenetic relationships among the breeds. To compare the two groups, we employed three complementary methods for selection signature detection: FST, XP-EHH, and ROH. Our results reveal a clear differentiation between shepherd and hunting dogs as well as between gun dogs vs. hounds and guardian vs. herding shepherd dogs. The genomic regions distinguishing these groups harbour several genes associated with domestication and behavioural traits, including gregariousness (WBSRC17) and aggressiveness (CDH12 and HTT). Additionally, genes related to morphology, such as size and coat colour (ASIP and TYRP1) and texture (RSPO2), were identified. This comparative genomic analysis sheds light on the genetic underpinnings of the phenotypic and behavioural variations observed in Italian hunting and shepherd dogs.
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Affiliation(s)
- Arianna Bionda
- Dipartimento di Scienze Agrarie e Ambientali—Produzione, Territorio, Agroenergia, University of Milano, Via Celoria 2, 20133 Milano, Italy; (A.B.); (P.C.)
| | - Matteo Cortellari
- Dipartimento di Scienze Agrarie e Ambientali—Produzione, Territorio, Agroenergia, University of Milano, Via Celoria 2, 20133 Milano, Italy; (A.B.); (P.C.)
| | - Luigi Liotta
- Dipartimento di Scienze Veterinarie, University of Messina, Viale Palatucci 13, 98168 Messina, Italy;
| | - Paola Crepaldi
- Dipartimento di Scienze Agrarie e Ambientali—Produzione, Territorio, Agroenergia, University of Milano, Via Celoria 2, 20133 Milano, Italy; (A.B.); (P.C.)
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Perfilyeva A, Bespalova K, Bespalov S, Begmanova M, Kuzovleva Y, Vishnyakova O, Nazarenko I, Abylkassymova G, Perfilyeva Y, Plakhov K, Djansugurova L, Bekmanov B. Homozygosity mapping in the Kazakh national dog breed Tazy. Sci Rep 2023; 13:10735. [PMID: 37400480 DOI: 10.1038/s41598-023-37990-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 06/30/2023] [Indexed: 07/05/2023] Open
Abstract
The Tazy is a breed of sighthound common in Kazakhstan. The identification of runs of homozygosity (ROH) is an informative approach to assessing the history and possible patterns of directional selection pressure. To our knowledge, the present study is the first to provide an overview of the ROH pattern in the Tazy dogs from a genome-wide perspective. The ROH of the Tazy was found to be mainly composed of shorter segments (1-2 Mb), accounting for approximately 67% of the total ROH. The estimated ROH-based inbreeding coefficients (FROH) ranged from 0.028 to 0.058 with a mean of 0.057. Five genomic regions under positive selection were identified on chromosomes 18, 22, and 25. The regions on chromosomes 18 and 22 may be breed specific, while the region on chromosome 22 overlaps with regions of hunting traits in other hunting dog breeds. Among the 12 candidate genes located in these regions, the gene CAB39L may be a candidate that affects running speed and endurance of the Tazy dog. Eight genes could belong to an evolutionarily conserved complex as they were clustered in a large protein network with strong linkages. The results may enable effective interventions when incorporated into conservation planning and selection of the Tazy breed.
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Affiliation(s)
- Anastassiya Perfilyeva
- Department of Molecular Genetics, Institute of Genetics and Physiology, 050060, Almaty, Kazakhstan
| | - Kira Bespalova
- Department of Molecular Genetics, Institute of Genetics and Physiology, 050060, Almaty, Kazakhstan.
- Department of Biology and Biotechnology, Al-Farabi Kazakh National University, 050040, Almaty, Kazakhstan.
| | - Sergey Bespalov
- Department of Theriology, Institute of Zoology, 050060, Almaty, Kazakhstan
| | - Mamura Begmanova
- Department of Molecular Genetics, Institute of Genetics and Physiology, 050060, Almaty, Kazakhstan
| | - Yelena Kuzovleva
- Department of Molecular Genetics, Institute of Genetics and Physiology, 050060, Almaty, Kazakhstan
| | - Olga Vishnyakova
- Republican Federation of Public Associations of Hunters and Hunting Societies "Kansonar", 050008, Almaty, Kazakhstan
| | - Inna Nazarenko
- Republican Federation of Public Associations of Hunters and Hunting Societies "Kansonar", 020000, Astana, Kazakhstan
| | - Gulnar Abylkassymova
- Department of Molecular Genetics, Institute of Genetics and Physiology, 050060, Almaty, Kazakhstan
| | - Yuliya Perfilyeva
- Laboratory of Molecular Immunology and Immunobiotechnology, M.A. Aitkhozhin's Institute of Molecular Biology and Biochemistry, 050012, Almaty, Kazakhstan
| | - Konstantin Plakhov
- Laboratory of Biocenology and Hunting Management, Institute of Zoology, 050060, Almaty, Kazakhstan
| | - Leyla Djansugurova
- Department of Molecular Genetics, Institute of Genetics and Physiology, 050060, Almaty, Kazakhstan
| | - Bakhytzhan Bekmanov
- Department of Molecular Genetics, Institute of Genetics and Physiology, 050060, Almaty, Kazakhstan
- Department of Biology and Biotechnology, Al-Farabi Kazakh National University, 050040, Almaty, Kazakhstan
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Bionda A, Cortellari M, Bigi D, Chiofalo V, Liotta L, Crepaldi P. Selection Signatures in Italian Livestock Guardian and Herding Shepherd Dogs. Vet Sci 2022; 10:3. [PMID: 36669004 PMCID: PMC9862740 DOI: 10.3390/vetsci10010003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/14/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022] Open
Abstract
Livestock guardian (LGD) and herding shepherd (HSD) dogs have distinct morphological and behavioural characteristics, long selected by farmers and breeders, to accomplish different tasks. This study aimed to find the genomic regions that best differentiate and characterise Italian LGD and HSD. Genomic data of 158 dogs of four LGD and five HSD breeds, obtained with the 170K canine SNPchip, were collected. The two groups were compared using FST and XP-EHH analyses, identifying regions containing 29 genes. Moreover, 16 islands of runs of homozygosity were found in LGD, and 15 in HSD; 4 of them were partially shared. Among the genes found that better differentiated HSD and LGD, several were associated with dog domestication and behavioural aspects; particularly, MSRB3 and LLPH were linked to herding behaviour in previous studies. Others, DYSK, MAP2K5, and RYR, were related to body size and muscle development. Prick ears prevailed in sampled HSD, and drop ears in LGD; this explains the identification of WIF1 and MSRB3 genes. Unexpectedly, a number of genes were also associated with eye development and functionality. These results shed further light on the differences that human selection introduced in dogs aimed at different duties, even in a limited geographic area such as Italy.
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Affiliation(s)
- Arianna Bionda
- Department of Agricultural and Environmental Sciences, Milan University, Via Celoria 2, 20133 Milan, Italy
| | - Matteo Cortellari
- Department of Agricultural and Environmental Sciences, Milan University, Via Celoria 2, 20133 Milan, Italy
| | - Daniele Bigi
- Department of Agricultural and Food Science and Technology (DISTAL), University of Bologna, Viale Fanin 46, 40127 Bologna, Italy
| | - Vincenzo Chiofalo
- Department of Veterinary Sciences, Messina University, Viale Palatucci 13, 98168 Messina, Italy
- Consortium of Research for Meat Chain and Agrifood (CoRFilCarni), Viale Palatucci 13, 98168 Messina, Italy
| | - Luigi Liotta
- Department of Veterinary Sciences, Messina University, Viale Palatucci 13, 98168 Messina, Italy
| | - Paola Crepaldi
- Department of Agricultural and Environmental Sciences, Milan University, Via Celoria 2, 20133 Milan, Italy
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Yu Y, Liu L, Windig J, Bosse M, Groenen MAM, Crooijmans RPMA. Unique genetic signature and selection footprints in Dutch population of German Longhaired Pointer dogs. Anim Genet 2022; 53:829-840. [PMID: 35993291 PMCID: PMC9804189 DOI: 10.1111/age.13253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 08/03/2022] [Accepted: 08/03/2022] [Indexed: 01/05/2023]
Abstract
The German Longhaired Pointer (GLP) breed is a versatile pointer dog breed. In the current study, we investigated the genetic diversity of these dogs based on SNP array data and compared it to 11 other pointer setter breeds. The results show that GLPs have a relatively low level of inbreeding among these pointer breeds. In addition, with the availability of pedigree information of the GLPs, we demonstrate that the correlation between pedigree-based inbreeding and genotype-based inbreeding coefficients was high (R = 0.89 and 0.85). By investigating population structure between these 12 pointer setter breeds we showed that GLP is a breed distinct from other pointers and shares common ancestry with a few other pointing breeds. Finally, we identified selection signatures in GLPs using the runs of homozygosity islands method. The most significant runs of homozygosity island was detected on chromosome 30 harboring the genes RYR3, FMN1, and GREM1. The RYR3 gene plays a role in skeletal muscle contraction while the FMN1 and GREM1 genes are involved in limb development. The selection on these three genes could have contributed to the excellent athletic performance of GLPs, which is an extremely important characteristic for this hunting dog.
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Affiliation(s)
- Yun Yu
- Animal Breeding and GenomicsWageningen University & ResearchWageningenThe Netherlands
| | - Langqing Liu
- Division of Evolutionary Biology, Faculty of BiologyLudwig‐Maximilians‐Universität (LMU) MünchenPlanegg‐MartinsriedGermany
| | - Jack Windig
- Animal Breeding and GenomicsWageningen University & ResearchWageningenThe Netherlands,Centre for Genetic Resources the NetherlandsWageningen University & ResearchWageningenThe Netherlands
| | - Mirte Bosse
- Animal Breeding and GenomicsWageningen University & ResearchWageningenThe Netherlands,Amsterdam Institute for Life and Environment (A‐Life)Vrije Universiteit AmsterdamAmsterdamThe Netherlands
| | - Martien A. M. Groenen
- Animal Breeding and GenomicsWageningen University & ResearchWageningenThe Netherlands
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Djurkin Kušec I, Bošković I, Zorc M, Gvozdanović K, Škorput D, Dovč P, Kušec G. Genomic Characterization of the Istrian Shorthaired Hound. Animals (Basel) 2020; 10:ani10112013. [PMID: 33139624 PMCID: PMC7693797 DOI: 10.3390/ani10112013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 10/28/2020] [Accepted: 10/29/2020] [Indexed: 02/07/2023] Open
Abstract
Istrian shorthaired hound is an old indigenous Croatian dog breed with historical traces of its origin, which date back to the 14th century. Due to its intelligence and great hunting abilities, it is considered an excellent hunting dog. Despite its ancient origin, there is no data on genetic diversity, population structure, and degree of inbreeding that could be used for advanced management and conservation of this breed. Our study aimed to provide a high-resolution population structure of the Istrian shorthaired hound using a 220K HD SNP array, to compare the obtained data with the genealogical records and to place the breed in a broader context of world dog populations. Relatively high population size and low inbreeding coefficient estimated from genealogical data indicate a preserved genetic diversity in this breed. The principle component analysis, the NeighborNet network, and TreeMix were used to determine the genetic relationship between the Istrian shorthaired hound and other breeds. The Istrian shorthaired hound was found to be genetically related to Italian hunting dogs sharing the same branch with the Segugio Italiano a Pelo Raso and Segugio Italiano a Pelo Forte. The ADMIXTURE analysis indicated that the Istrian shorthaired hound could be involved in the development of some other hunting dog breeds. The estimated effective population size (Ne) based on SNP data was similar to Ne calculated from genealogical data indicating the absence of bottlenecks and well-balanced use of breeding animals. The low genomic inbreeding coefficient, together with the higher number of short runs of homozygosity, observed in the Istrian shorthaired hound, confirms the ancient origin of the breed based on historical documents. The analysis of selective sweeps identified genomic regions with the strongest selection signals in the vicinity of the genes associated with cognitive performance and behavior. Genome analysis proved to be a useful tool for estimating population parameters and can be implemented in the conservation plan for this indigenous breed.
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Affiliation(s)
- Ivona Djurkin Kušec
- Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia; (I.D.K.); (I.B.); (K.G.); (G.K.)
| | - Ivica Bošković
- Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia; (I.D.K.); (I.B.); (K.G.); (G.K.)
| | - Minja Zorc
- Department of Animal Science, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia;
- Correspondence:
| | - Kristina Gvozdanović
- Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia; (I.D.K.); (I.B.); (K.G.); (G.K.)
| | - Dubravko Škorput
- Faculty of Agriculture, University of Zagreb, Svetošimunska cesta 25, 10000 Zagreb, Croatia;
| | - Peter Dovč
- Department of Animal Science, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia;
| | - Goran Kušec
- Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia; (I.D.K.); (I.B.); (K.G.); (G.K.)
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Ashbrook DG, Mulligan MK, Williams RW. Post-genomic behavioral genetics: From revolution to routine. GENES, BRAIN, AND BEHAVIOR 2018; 17:e12441. [PMID: 29193773 PMCID: PMC5876106 DOI: 10.1111/gbb.12441] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 11/02/2017] [Accepted: 11/20/2017] [Indexed: 12/16/2022]
Abstract
What was once expensive and revolutionary-full-genome sequence-is now affordable and routine. Costs will continue to drop, opening up new frontiers in behavioral genetics. This shift in costs from the genome to the phenome is most notable in large clinical studies of behavior and associated diseases in cohorts that exceed hundreds of thousands of subjects. Examples include the Women's Health Initiative (www.whi.org), the Million Veterans Program (www. RESEARCH va.gov/MVP), the 100 000 Genomes Project (genomicsengland.co.uk) and commercial efforts such as those by deCode (www.decode.com) and 23andme (www.23andme.com). The same transition is happening in experimental neuro- and behavioral genetics, and sample sizes of many hundreds of cases are becoming routine (www.genenetwork.org, www.mousephenotyping.org). There are two major consequences of this new affordability of massive omics datasets: (1) it is now far more practical to explore genetic modulation of behavioral differences and the key role of gene-by-environment interactions. Researchers are already doing the hard part-the quantitative analysis of behavior. Adding the omics component can provide powerful links to molecules, cells, circuits and even better treatment. (2) There is an acute need to highlight and train behavioral scientists in how best to exploit new omics approaches. This review addresses this second issue and highlights several new trends and opportunities that will be of interest to experts in animal and human behaviors.
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Affiliation(s)
- D G Ashbrook
- Department of Genetics, Genomics and Informatics, University of Tennessee Health Sciences Center, College of Medicine, Memphis, Tennessee
| | - M K Mulligan
- Department of Genetics, Genomics and Informatics, University of Tennessee Health Sciences Center, College of Medicine, Memphis, Tennessee
| | - R W Williams
- Department of Genetics, Genomics and Informatics, University of Tennessee Health Sciences Center, College of Medicine, Memphis, Tennessee
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Talenti A, Dreger DL, Frattini S, Polli M, Marelli S, Harris AC, Liotta L, Cocco R, Hogan AN, Bigi D, Caniglia R, Parker HG, Pagnacco G, Ostrander EA, Crepaldi P. Studies of modern Italian dog populations reveal multiple patterns for domestic breed evolution. Ecol Evol 2018; 8:2911-2925. [PMID: 29531705 PMCID: PMC5838073 DOI: 10.1002/ece3.3842] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 12/27/2017] [Indexed: 01/16/2023] Open
Abstract
Through thousands of years of breeding and strong human selection, the dog (Canis lupus familiaris) exists today within hundreds of closed populations throughout the world, each with defined phenotypes. A singular geographic region with broad diversity in dog breeds presents an interesting opportunity to observe potential mechanisms of breed formation. Italy claims 14 internationally recognized dog breeds, with numerous additional local varieties. To determine the relationship among Italian dog populations, we integrated genetic data from 263 dogs representing 23 closed dog populations from Italy, seven Apennine gray wolves, and an established dataset of 161 globally recognized dog breeds, applying multiple genetic methods to characterize the modes by which breeds are formed within a single geographic region. Our consideration of each of five genetic analyses reveals a series of development events that mirror historical modes of breed formation, but with variations unique to the codevelopment of early dog and human populations. Using 142,840 genome-wide SNPs and a dataset of 1,609 canines, representing 182 breeds and 16 wild canids, we identified breed development routes for the Italian breeds that included divergence from common populations for a specific purpose, admixture of regional stock with that from other regions, and isolated selection of local stock with specific attributes.
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Affiliation(s)
- Andrea Talenti
- Dipartimento di Medicina VeterinariaUniversità di MilanoMilanoItaly
| | - Dayna L. Dreger
- National Human Genome Research InstituteNational Institutes of HealthBethesdaMDUSA
| | - Stefano Frattini
- Dipartimento di Medicina VeterinariaUniversità di MilanoMilanoItaly
| | - Michele Polli
- Dipartimento di Medicina VeterinariaUniversità di MilanoMilanoItaly
| | - Stefano Marelli
- Dipartimento di Medicina VeterinariaUniversità di MilanoMilanoItaly
| | - Alexander C. Harris
- National Human Genome Research InstituteNational Institutes of HealthBethesdaMDUSA
| | - Luigi Liotta
- Dipartimento di Scienze VeterinarieUniversity of MessinaMessinaItaly
| | - Raffaella Cocco
- Dipartimento di Medicina VeterinariaUniversity of SassariSassariItaly
| | - Andrew N. Hogan
- National Human Genome Research InstituteNational Institutes of HealthBethesdaMDUSA
| | - Daniele Bigi
- Dipartimento di Scienza e Tecnologie Agro‐AlimentariAlma Mater Studiorum University of BolognaBolognaItaly
| | - Romolo Caniglia
- Area per la Genetica della ConservazioneIstituto Superiore per la Protezione e la Ricerca AmbientaleOzzano dell'EmiliaBolognaItaly
| | - Heidi G. Parker
- National Human Genome Research InstituteNational Institutes of HealthBethesdaMDUSA
| | - Giulio Pagnacco
- Dipartimento di Medicina VeterinariaUniversità di MilanoMilanoItaly
| | - Elaine A. Ostrander
- National Human Genome Research InstituteNational Institutes of HealthBethesdaMDUSA
| | - Paola Crepaldi
- Dipartimento di Medicina VeterinariaUniversità di MilanoMilanoItaly
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Ostrander EA, Wayne RK, Freedman AH, Davis BW. Demographic history, selection and functional diversity of the canine genome. Nat Rev Genet 2017; 18:705-720. [DOI: 10.1038/nrg.2017.67] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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10
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Ocklenburg S, Arning L, Gerding WM, Hengstler JG, Epplen JT, Güntürkün O, Beste C, Akkad DA. Left-Right Axis Differentiation and Functional Lateralization: a Haplotype in the Methyltransferase Encoding Gene SETDB2 Might Mediate Handedness in Healthy Adults. Mol Neurobiol 2015; 53:6355-6361. [PMID: 26572639 DOI: 10.1007/s12035-015-9534-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 11/08/2015] [Indexed: 11/28/2022]
Abstract
Handedness is a multifactorial trait, and genes contributing to the differentiation of the left-right axis during embryogenesis have been identified as a major gene group associated with this trait. The methyltransferase SETDB2 (SET domain, bifurcated 2) has been shown to regulate structural left-right asymmetry in the vertebrate central nervous system by suppressing fgf8 expression. Here, we investigated the relation of genetic variation in SETDB2-and its paralogue SETDB1-with different handedness phenotypes in 950 healthy adult participants. We identified a haplotype on SETDB2 for which homozygous individuals showed a significantly lower lateralization quotient for handedness than the rest of the cohort after correction for multiple comparisons. Moreover, direction of handedness was significantly associated with genetic variation in this haplotype. This effect was mainly, but not exclusively, driven by the sequence variation rs4942830, as individuals homozygous for the A allele of this single nucleotide polymorphism had a significantly lower lateralization quotient than individuals with at least one T allele. These findings further confirm a role of genetic pathways relevant for structural left-right axis differentiation for functional lateralization. Moreover, as the protein encoded by SETDB2 regulates gene expression epigenetically by histone H3 methylation, our findings highlight the importance of investigating the role of epigenetic modulations of gene expression in relation to handedness.
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Affiliation(s)
- Sebastian Ocklenburg
- Institute of Cognitive Neuroscience, Biopsychology, Department of Psychology, Ruhr-University, 44780, Bochum, Germany.
| | - Larissa Arning
- Department of Human Genetics, Ruhr-University, 44780, Bochum, Germany
| | - Wanda M Gerding
- Department of Human Genetics, Ruhr-University, 44780, Bochum, Germany
| | - Jan G Hengstler
- Leibniz Research Centre for Working Environment and Human Factors (IfADo), 44139, Dortmund, Germany
| | - Jörg T Epplen
- Department of Human Genetics, Ruhr-University, 44780, Bochum, Germany
- Faculty of Health, University Witten-Herdecke, 58448, Witten, Germany
| | - Onur Güntürkün
- Institute of Cognitive Neuroscience, Biopsychology, Department of Psychology, Ruhr-University, 44780, Bochum, Germany
| | - Christian Beste
- Cognitive Neurophysiology, Department of Child and Adolescent Psychiatry, Faculty of Medicine of the TU Dresden, 01309, Dresden, Germany
| | - Denis A Akkad
- Department of Human Genetics, Ruhr-University, 44780, Bochum, Germany
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