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Mochizuki H, Estrada AJ, Boggess M. Assessment of Y chromosome copy number alterations in non-neoplastic and neoplastic leukocytes of male dogs. Vet J 2024; 304:106088. [PMID: 38412887 DOI: 10.1016/j.tvjl.2024.106088] [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: 08/21/2023] [Revised: 02/22/2024] [Accepted: 02/23/2024] [Indexed: 02/29/2024]
Abstract
The loss of the Y chromosome (ChrY), also known as LOY, is a common genetic alteration observed in men. It occurs in non-neoplastic cells as an age-related change as well as in neoplastic cells of various cancer types. While well-documented in humans, LOY has not been extensively studied in non-human mammals. In this study, we developed simple digital PCR-based assays to assess the copy number of ChrY relative to the X chromosome (ChrX) and chromosome 8 (Chr8) to evaluate ChrY numerical alterations in male canine DNA specimens. Using these assays, we analyzed non-neoplastic leukocytes from 162 male dogs without hematopoietic neoplasia to investigate the occurrence of age-related LOY in non-neoplastic leukocytes. Additionally, we examined 101 tumor DNA specimens obtained from male dogs diagnosed with various types of lymphoma and leukemia to determine whether copy number alterations of the ChrY occur in canine hematopoietic cancers. Analysis of the 162 non-neoplastic leukocyte DNA specimens from male dogs of varying ages revealed a consistent ∼1:1 ChrY:ChrX ratio. This suggests that age-related LOY in non-neoplastic leukocytes is rare or absent in dogs. Conversely, a decreased or increased ChrY:ChrX ratio was detected in canine neoplastic leukocytes at varying frequencies across different canine hematopoietic malignancies (P = 0.01, Fisher's exact test). Notably, a higher incidence of LOY was observed in more aggressive cancer types. To determine if this relative LOY to ChrX was caused by changes in ChrY or ChrX, we further analyzed their relative copy numbers using Chr8 as a reference. Loss of ChrX relative to Chr8 was found in 21% (9/41) of B-cell lymphomas and 6% (1/18) of non-T-zone/high-grade T-cell lymphomas. In contrast, a subset (29%, 4/14) of T-cell chronic lymphocytic leukemia showed gain of ChrX relative to Chr8. Notably, no relative LOY to Chr8 was detected indolent hematopoietic cancers such as T-zone lymphoma (0/9) and chronic lymphocytic leukemia of B-cell (0/11) and T-cell origins (0/14). However, relative LOY to Chr8 was present in more aggressive canine hematopoietic cancers, with incidences of 24% (10/41) in B-cell lymphoma, 44% (8/18) in non-T-zone/high-grade T-cell lymphoma, and 75% (6/8) in acute leukemia. This study highlights both similarities and differences in LOY between human and canine non-neoplastic and neoplastic leukocytes. It underscores the need for further research into the role of ChrY in canine health and disease, as well as the significance of LOY across various species.
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Affiliation(s)
- H Mochizuki
- Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA; Comparative Medicine Institute, North Carolina State University, Raleigh, NC, USA.
| | - A J Estrada
- Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA
| | - M Boggess
- Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA
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Kuznetsova IL, Uralsky LI, Tyazhelova TV, Andreeva TV, Rogaev EI. Mosaic loss of the Y chromosome in human neurodegenerative and oncological diseases. Vavilovskii Zhurnal Genet Selektsii 2023; 27:502-511. [PMID: 37808213 PMCID: PMC10551935 DOI: 10.18699/vjgb-23-61] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/14/2023] [Accepted: 02/14/2023] [Indexed: 10/10/2023] Open
Abstract
The development of new biomarkers for prediction and early detection of human diseases, as well as for monitoring the response to therapy is one of the most relevant areas of modern human genetics and genomics. Until recently, it was believed that the function of human Y chromosome genes was limited to determining sex and controlling spermatogenesis. Thanks to occurance of large databases of the genome-wide association study (GWAS), there has been a transition to the use of large samples for analyzing genetic changes in both normal and pathological conditions. This has made it possible to assess the association of mosaic aneuploidy of the Y chromosome in somatic cells with a shorter lifespan in men compared to women. Based on data from the UK Biobank, an association was found between mosaic loss of the Y chromosome (mLOY) in peripheral blood leukocytes and the age of men over 70, as well as a number of oncological, cardiac, metabolic, neurodegenerative, and psychiatric diseases. As a result, mLOY in peripheral blood cells has been considered a potential marker of biological age in men and as a marker of certain age-related diseases. Currently, numerous associations have been identified between mLOY and genes based on GWAS and transcriptomes in affected tissues. However, the exact cause of mLOY and the impact and consequences of this phenomenon at the whole organism level have not been established. In particular, it is unclear whether aneuploidy of the Y chromosome in blood cells may affect the development of pathologies that manifest in other organs, such as the brain in Alzheimer's disease, or whether it is a neutral biomarker of general genomic instability. This review examines the main pathologies and genetic factors associated with mLOY, as well as the hypotheses regarding their interplay. Special attention is given to recent studies on mLOY in brain cells in Alzheimer's disease.
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Affiliation(s)
- I L Kuznetsova
- Vavilov Institute of General Genetics, Russian Academy of Sciences, Department of Genomics and Human Genetics, Moscow, Russia Sirius University of Science and Technology, Scientific Center for Genetics and Life Sciences, Sochi, Russia
| | - L I Uralsky
- Vavilov Institute of General Genetics, Russian Academy of Sciences, Department of Genomics and Human Genetics, Moscow, Russia Sirius University of Science and Technology, Scientific Center for Genetics and Life Sciences, Sochi, Russia
| | - T V Tyazhelova
- Vavilov Institute of General Genetics, Russian Academy of Sciences, Department of Genomics and Human Genetics, Moscow, Russia
| | - T V Andreeva
- Vavilov Institute of General Genetics, Russian Academy of Sciences, Department of Genomics and Human Genetics, Moscow, Russia Sirius University of Science and Technology, Scientific Center for Genetics and Life Sciences, Sochi, Russia Lomonosov Moscow State University, Center for Genetics and Genetic Technologies, Faculty of Biology, Moscow, Russia
| | - E I Rogaev
- Vavilov Institute of General Genetics, Russian Academy of Sciences, Department of Genomics and Human Genetics, Moscow, Russia Sirius University of Science and Technology, Scientific Center for Genetics and Life Sciences, Sochi, Russia Lomonosov Moscow State University, Center for Genetics and Genetic Technologies, Faculty of Biology, Moscow, Russia
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Eales JM, Maan AA, Xu X, Michoel T, Hallast P, Batini C, Zadik D, Prestes PR, Molina E, Denniff M, Schroeder J, Bjorkegren JLM, Thompson J, Maffia P, Guzik TJ, Keavney B, Jobling MA, Samani NJ, Charchar FJ, Tomaszewski M. Human Y Chromosome Exerts Pleiotropic Effects on Susceptibility to Atherosclerosis. Arterioscler Thromb Vasc Biol 2019; 39:2386-2401. [PMID: 31644355 PMCID: PMC6818981 DOI: 10.1161/atvbaha.119.312405] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Supplemental Digital Content is available in the text. The male-specific region of the Y chromosome (MSY) remains one of the most unexplored regions of the genome. We sought to examine how the genetic variants of the MSY influence male susceptibility to coronary artery disease (CAD) and atherosclerosis.
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Affiliation(s)
- James M Eales
- From the Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, University of Manchester, United Kingdom (J.M.E., A.A.M., X.X., B.K., M.T.)
| | - Akhlaq A Maan
- From the Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, University of Manchester, United Kingdom (J.M.E., A.A.M., X.X., B.K., M.T.)
| | - Xiaoguang Xu
- From the Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, University of Manchester, United Kingdom (J.M.E., A.A.M., X.X., B.K., M.T.)
| | - Tom Michoel
- The Roslin Institute, The University of Edinburgh, United Kingdom (T.M.).,Computational Biology Unit and Department of Informatics, University of Bergen, Norway (T.M.)
| | - Pille Hallast
- Institute of Biomedicine and Translational Medicine, University of Tartu, Estonia (P.H.)
| | - Chiara Batini
- Department of Health Sciences (C.B., J.T.), University of Leicester, United Kingdom
| | - Daniel Zadik
- Department of Genetics and Genome Biology (D.Z., M.A.J.), University of Leicester, United Kingdom
| | - Priscilla R Prestes
- School of Health and Life Sciences, Federation University Australia, Ballarat, Victoria (P.R.P., E.M., F.J.C.)
| | - Elsa Molina
- School of Health and Life Sciences, Federation University Australia, Ballarat, Victoria (P.R.P., E.M., F.J.C.)
| | - Matthew Denniff
- Department of Cardiovascular Sciences (M.D., N.J.S., F.J.C.), University of Leicester, United Kingdom
| | - Juliane Schroeder
- Centre for Immunobiology, Institute of Infection, Immunity and Inflammation (J.S., P.M.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom.,Institute of Cardiovascular and Medical Sciences (J.S., P.M., T.J.G.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom
| | - Johan L M Bjorkegren
- Department of Genetics and Genomic Sciences, Icahn Institute for Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY (J.L.M.B.)
| | - John Thompson
- Department of Health Sciences (C.B., J.T.), University of Leicester, United Kingdom
| | - Pasquale Maffia
- Centre for Immunobiology, Institute of Infection, Immunity and Inflammation (J.S., P.M.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom.,Institute of Cardiovascular and Medical Sciences (J.S., P.M., T.J.G.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom.,Department of Pharmacy, University of Naples Federico II, Italy (P.M.)
| | - Tomasz J Guzik
- Institute of Cardiovascular and Medical Sciences (J.S., P.M., T.J.G.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom.,Jagiellonian University College of Medicine, Kraków, Poland (T.J.G.)
| | - Bernard Keavney
- From the Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, University of Manchester, United Kingdom (J.M.E., A.A.M., X.X., B.K., M.T.).,Division of Medicine, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, United Kingdom (B.K., M.T.)
| | - Mark A Jobling
- Department of Genetics and Genome Biology (D.Z., M.A.J.), University of Leicester, United Kingdom
| | - Nilesh J Samani
- Department of Cardiovascular Sciences (M.D., N.J.S., F.J.C.), University of Leicester, United Kingdom.,NIHR Leicester Biomedical Research Centre, United Kingdom (N.J.S.)
| | - Fadi J Charchar
- Department of Cardiovascular Sciences (M.D., N.J.S., F.J.C.), University of Leicester, United Kingdom.,School of Health and Life Sciences, Federation University Australia, Ballarat, Victoria (P.R.P., E.M., F.J.C.).,Department of Physiology, University of Melbourne, Parkville, Victoria, Australia (F.J.C.)
| | - Maciej Tomaszewski
- From the Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, University of Manchester, United Kingdom (J.M.E., A.A.M., X.X., B.K., M.T.).,Division of Medicine, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, United Kingdom (B.K., M.T.)
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Larmuseau MHD, Ottoni C. Mediterranean Y-chromosome 2.0-why the Y in the Mediterranean is still relevant in the postgenomic era. Ann Hum Biol 2018; 45:20-33. [PMID: 29382278 DOI: 10.1080/03014460.2017.1402956] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
CONTEXT Due to its unique paternal inheritance, the Y-chromosome has been a highly popular marker among population geneticists for over two decades. Recently, the advent of cost-effective genome-wide methods has unlocked information-rich autosomal genomic data, paving the way to the postgenomic era. This seems to have announced the decreasing popularity of investigating Y-chromosome variation, which provides only the paternal perspective of human ancestries and is strongly influenced by genetic drift and social behaviour. OBJECTIVE For this special issue on population genetics of the Mediterranean, the aim was to demonstrate that the Y-chromosome still provides important insights in the postgenomic era and in a time when ancient genomes are becoming exponentially available. METHODS A systematic literature search on Y-chromosomal studies in the Mediterranean was performed. RESULTS Several applications of Y-chromosomal analysis with future opportunities are formulated and illustrated with studies on Mediterranean populations. CONCLUSIONS There will be no reduced interest in Y-chromosomal studies going from reconstruction of male-specific demographic events to ancient DNA applications, surname history and population-wide estimations of extra-pair paternity rates. Moreover, more initiatives are required to collect population genetic data of Y-chromosomal markers for forensic research, and to include Y-chromosomal data in GWAS investigations and studies on male infertility.
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Affiliation(s)
- Maarten H D Larmuseau
- a KU Leuven, Forensic Biomedical Sciences , Department of Imaging & Pathology , Leuven , Belgium.,b KU Leuven, Laboratory of Socioecology and Social Evolution , Department of Biology , Leuven , Belgium
| | - Claudio Ottoni
- c Centre for Ecological and Evolutionary Synthesis (CEES), Department of Biosciences , University of Oslo , Oslo , Norway
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Defining Y-SNP variation among the Flemish population (Western Europe) by full genome sequencing. Forensic Sci Int Genet 2017; 31:e12-e16. [PMID: 29089250 DOI: 10.1016/j.fsigen.2017.10.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 10/10/2017] [Accepted: 10/24/2017] [Indexed: 12/27/2022]
Abstract
Y-chromosomal single nucleotide polymorphisms (Y-SNPs) represent a powerful tool in forensic research and casework, especially for inferring paternal ancestry of unknown perpetrators and unidentified bodies. However, the wealth of recently discovered Y-SNPs, the 'jungle' of different evolutionary lineage trees and nomenclatures, and the lack of population-wide data of many phylogenetically mapped Y-SNPs, limits the use of Y-SNPs in routine forensic approaches. Recently, a concise reference phylogeny of the human Y chromosome, the 'Minimal Reference Y-tree', was introduced aiming to provide a stable phylogeny with optimal global discrimination capacity by including the most resolving Y-SNPs. Here, we obtained a representative sample of 270 whole-genome sequences (WGS) to grasp the Y-SNP variation within the autochthonous Flemish population (Belgium, Western Europe) according to this reference Y-tree. The high quality of the Y-SNP calling was guaranteed for the WGS sample as well as its representativeness for the Flemish population based on the comparison of the main haplogroup frequencies with those from earlier studies on Flanders and the Netherlands. The 270 Flemish Y chromosomes were assigned to 98 different sub-haplogroups of the Minimal Reference Y-tree, showing its high potential of discrimination and confirming the spectrum of evolutionary lineages within Western Europe in general and within Flanders in particular. The full database with all Y-SNP calls of the Flemish sample is public available for future updates including forensic and population genetic studies. New initiatives to categorise Y-SNP variation in other populations according to the reference phylogeny of the Y chromosome are highly encouraged for forensic applications. Recommendations to realise such future population sample sets are discussed based on this study.
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