1
|
Saenz Hinojosa S, Adrian Jinam T, Hosomichi K, Romero VI. HLA allelic diversity in the Waorani population of Ecuador: Its significance to their ancestry and migration. Hum Immunol 2024; 85:110771. [PMID: 38443236 DOI: 10.1016/j.humimm.2024.110771] [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: 07/31/2023] [Revised: 02/09/2024] [Accepted: 02/28/2024] [Indexed: 03/07/2024]
Abstract
The Waorani, an isolated indigenous tribe in Ecuador, have long been characterized by limited genetic diversity, with few studies delving into their genetic background. Human Leukocyte Antigen (HLA) genes which are located in the human major histocompatibility complex (MHC) provides valuable insights into population evolution due to its highly polymorphic nature. However, little is known about the HLA diversity and ancestry of the Waorani population. In this study, we sequenced eight HLA genes using Next Generation Sequencing (NGS) from 134 Waorani individuals and obtained up to four-field HLA allele resolution. Cluster and phylogenetic analysis show that the Waorani are genetically distant from other Ecuador populations, but instead show genetic affinities with the Puyanawa and Terena tribes from Brazil, as well as the Mixe tribe from Mexico. The identification of alleles common within the Waorani population, previously linked to specific health conditions, notably paves the way for future association analyses. This extensive study, employing Next-Generation Sequencing (NGS) technology, significantly enriches the sparse and segmented understanding of HLA diversity in the South American region. Our findings enhance the global comprehension of human genetic diversity and underscore the value of studying indigenous populations. Such research is vital for deepening our insights into human migration patterns and evolutionary processes.
Collapse
Affiliation(s)
| | - Timothy Adrian Jinam
- Department of Para-Clinical Sciences, Faculty of Medicine & Health Sciences, University Malaysia Sarawak, Malaysia
| | - Kazuyoshi Hosomichi
- Laboratory of Computational Genomics, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
| | - Vanessa I Romero
- School of Medicine, Universidad San Francisco de Quito, Quito, Ecuador.
| |
Collapse
|
2
|
Lancaster AK, Single RM, Mack SJ, Sochat V, Mariani MP, Webster GD. PyPop: a mature open-source software pipeline for population genomics. Front Immunol 2024; 15:1378512. [PMID: 38629078 PMCID: PMC11019567 DOI: 10.3389/fimmu.2024.1378512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 03/08/2024] [Indexed: 04/19/2024] Open
Abstract
Python for Population Genomics (PyPop) is a software package that processes genotype and allele data and performs large-scale population genetic analyses on highly polymorphic multi-locus genotype data. In particular, PyPop tests data conformity to Hardy-Weinberg equilibrium expectations, performs Ewens-Watterson tests for selection, estimates haplotype frequencies, measures linkage disequilibrium, and tests significance. Standardized means of performing these tests is key for contemporary studies of evolutionary biology and population genetics, and these tests are central to genetic studies of disease association as well. Here, we present PyPop 1.0.0, a new major release of the package, which implements new features using the more robust infrastructure of GitHub, and is distributed via the industry-standard Python Package Index. New features include implementation of the asymmetric linkage disequilibrium measures and, of particular interest to the immunogenetics research communities, support for modern nomenclature, including colon-delimited allele names, and improvements to meta-analysis features for aggregating outputs for multiple populations. Code available at: https://zenodo.org/records/10080668 and https://github.com/alexlancaster/pypop.
Collapse
Affiliation(s)
- Alexander K. Lancaster
- Amber Biology LLC, Cambridge, MA, United States
- Ronin Institute, Montclair, NJ, United States
- Institute for Globally Distributed Open Research and Education (IGDORE), Cambridge, MA, United States
| | - Richard M. Single
- Department of Mathematics and Statistics, University of Vermont, Burlington, VT, United States
| | - Steven J. Mack
- Department of Pediatrics, University of California, San Francisco, Oakland, CA, United States
| | - Vanessa Sochat
- Livermore Computing, Lawrence Livermore National Laboratory, Livermore, CA, United States
| | - Michael P. Mariani
- Department of Mathematics and Statistics, University of Vermont, Burlington, VT, United States
- Mariani Systems LLC, Hanover, NH, United States
| | - Gordon D. Webster
- Amber Biology LLC, Cambridge, MA, United States
- Ronin Institute, Montclair, NJ, United States
| |
Collapse
|
3
|
Shiina T, Kulski JK. HLA Genetics for the Human Diseases. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1444:237-258. [PMID: 38467984 DOI: 10.1007/978-981-99-9781-7_16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
Highly polymorphic human leukocyte antigen (HLA) molecules (alleles) expressed by different classical HLA class I and class II genes have crucial roles in the regulation of innate and adaptive immune responses, transplant rejection and in the pathogenesis of numerous infectious and autoimmune diseases. To date, over 35,000 HLA alleles have been published from the IPD-IMGT/HLA database, and specific HLA alleles and HLA haplotypes have been reported to be associated with more than 100 different diseases and phenotypes. Next generation sequencing (NGS) technology developed in recent years has provided breakthroughs in various HLA genomic/gene studies and transplant medicine. In this chapter, we review the current information on the HLA genomic structure and polymorphisms, as well as the genetic context in which numerous disease associations have been identified in this region.
Collapse
Affiliation(s)
| | - Jerzy K Kulski
- Tokai University School of Medicine, Isehara, Japan
- School of Biomedical Sciences, The University of Western Australia, Nedlands, Western Australia, Australia
| |
Collapse
|
4
|
Alper CA, Dawkins RL, Kulski JK, Larsen CE, Lloyd SS. Editorial: Population genomic architecture: Conserved polymorphic sequences (CPSs), not linkage disequilibrium. Front Genet 2023; 14:1140350. [PMID: 36777737 PMCID: PMC9911302 DOI: 10.3389/fgene.2023.1140350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Accepted: 01/17/2023] [Indexed: 01/28/2023] Open
Affiliation(s)
- Chester A. Alper
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, MA, United States,Department of Pediatrics, Harvard Medical School, Boston, MA, United States,*Correspondence: Chester A. Alper, ; Roger L. Dawkins, ; Jerzy K. Kulski, ; Charles E. Larsen, ; Sally S. Lloyd,
| | - Roger L. Dawkins
- CY O’Connor ERADE Village Foundation, North Dandalup, WA, Australia,*Correspondence: Chester A. Alper, ; Roger L. Dawkins, ; Jerzy K. Kulski, ; Charles E. Larsen, ; Sally S. Lloyd,
| | - Jerzy K. Kulski
- Department of Molecular Life Sciences, Division of Basic Medical Science and Molecular Medicine, Tokai University School of Medicine, Isehara, Japan,*Correspondence: Chester A. Alper, ; Roger L. Dawkins, ; Jerzy K. Kulski, ; Charles E. Larsen, ; Sally S. Lloyd,
| | - Charles E. Larsen
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, MA, United States,Department of Pediatrics, Harvard Medical School, Boston, MA, United States,*Correspondence: Chester A. Alper, ; Roger L. Dawkins, ; Jerzy K. Kulski, ; Charles E. Larsen, ; Sally S. Lloyd,
| | - Sally S. Lloyd
- CY O’Connor ERADE Village Foundation, North Dandalup, WA, Australia,*Correspondence: Chester A. Alper, ; Roger L. Dawkins, ; Jerzy K. Kulski, ; Charles E. Larsen, ; Sally S. Lloyd,
| |
Collapse
|
5
|
Kulski JK, Suzuki S, Shiina T. Human leukocyte antigen super-locus: nexus of genomic supergenes, SNPs, indels, transcripts, and haplotypes. Hum Genome Var 2022; 9:49. [PMID: 36543786 PMCID: PMC9772353 DOI: 10.1038/s41439-022-00226-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 11/08/2022] [Accepted: 11/15/2022] [Indexed: 12/24/2022] Open
Abstract
The human Major Histocompatibility Complex (MHC) or Human Leukocyte Antigen (HLA) super-locus is a highly polymorphic genomic region that encodes more than 140 coding genes including the transplantation and immune regulatory molecules. It receives special attention for genetic investigation because of its important role in the regulation of innate and adaptive immune responses and its strong association with numerous infectious and/or autoimmune diseases. In recent years, MHC genotyping and haplotyping using Sanger sequencing and next-generation sequencing (NGS) methods have produced many hundreds of genomic sequences of the HLA super-locus for comparative studies of the genetic architecture and diversity between the same and different haplotypes. In this special issue on 'The Current Landscape of HLA Genomics and Genetics', we provide a short review of some of the recent analytical developments used to investigate the SNP polymorphisms, structural variants (indels), transcription and haplotypes of the HLA super-locus. This review highlights the importance of using reference cell-lines, population studies, and NGS methods to improve and update our understanding of the mechanisms, architectural structures and combinations of human MHC genomic alleles (SNPs and indels) that better define and characterise haplotypes and their association with various phenotypes and diseases.
Collapse
Affiliation(s)
- Jerzy K Kulski
- Department of Molecular Life Science, Tokai University School of Medicine, Isehara, Kanagawa, Japan.
| | - Shingo Suzuki
- Department of Molecular Life Science, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Takashi Shiina
- Department of Molecular Life Science, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| |
Collapse
|
6
|
Alnaqbi H, Tay GK, Chehadeh SEH, Alsafar H. Characterizing the diversity of MHC conserved extended haplotypes using families from the United Arab Emirates. Sci Rep 2022; 12:7165. [PMID: 35504942 PMCID: PMC9065074 DOI: 10.1038/s41598-022-11256-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 04/20/2022] [Indexed: 11/19/2022] Open
Abstract
Aside from its anthropological relevance, the characterization of the allele frequencies of genes in the human Major Histocompatibility Complex (MHC) and the combination of these alleles that make up MHC conserved extended haplotypes (CEHs) is necessary for histocompatibility matching in transplantation as well as mapping disease association loci. The structure and content of the MHC region in Middle Eastern populations remain poorly characterized, posing challenges when establishing disease association studies in ethnic groups that inhabit the region and reducing the capacity to translate genetic research into clinical practice. This study was conceived to address a gap of knowledge, aiming to characterize CEHs in the United Arab Emirates (UAE) population through segregation analysis of high-resolution, pedigree-phased, MHC haplotypes derived from 41 families. Twenty per cent (20.5%) of the total haplotype pool derived from this study cohort were identified as putative CEHs in the UAE population. These consisted of CEHs that have been previously detected in other ethnic groups, including the South Asian CEH 8.2 [HLA- C*07:02-B*08:01-DRB1*03:01-DQA1*05:01-DQB1*02:01 (H.F. 0.094)] and the common East Asian CEH 58.1 [HLA- C*03:02-B*58:01-DRB1*03:01- DQA1*05:01-DQB1*02:01 (H.F. 0.024)]. Additionally, three novel CEHs were identified in the current cohort, including HLA- C*15:02-B*40:06-DRB1*16:02-DQB1*05:02 (H.F. 0.035), HLA- C*16:02-B*51:01-DRB1*16:01-DQA1*01:02-DQB1*05:02 (H.F. 0.029), and HLA- C*03:02-B*58:01-DRB1*16:01-DQA1*01:02-DQB1*05:02 (H.F. 0.024). Overall, the results indicate a substantial gene flow with neighbouring ethnic groups in the contemporary UAE population including South Asian, East Asian, African, and European populations. Importantly, alleles and haplotypes that have been previously associated with autoimmune diseases (e.g., Type 1 Diabetes) were also present. In this regard, this study emphasizes that an appreciation for ethnic differences can provide insights into subpopulation-specific disease-related polymorphisms, which has remained a difficult endeavour.
Collapse
Affiliation(s)
- Halima Alnaqbi
- Center for Biotechnology, Khalifa University of Science and Technology, P.O. BOX 127788, Abu Dhabi, UAE.,Department of Biomedical Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Guan K Tay
- Center for Biotechnology, Khalifa University of Science and Technology, P.O. BOX 127788, Abu Dhabi, UAE.,Division of Psychiatry, UWA Medical School, The University of Western Australia, Perth, WA, Australia.,School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia
| | - Sarah El Hajj Chehadeh
- Center for Biotechnology, Khalifa University of Science and Technology, P.O. BOX 127788, Abu Dhabi, UAE.,Department of Pharmacology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Habiba Alsafar
- Center for Biotechnology, Khalifa University of Science and Technology, P.O. BOX 127788, Abu Dhabi, UAE. .,Department of Biomedical Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates. .,Department of Genetics and Molecular Biology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates.
| |
Collapse
|
7
|
Cun Y, Shi L, Kulski JK, Liu S, Yang J, Tao Y, Zhang X, Shi L, Yao Y. Haplotypic Associations and Differentiation of MHC Class II Polymorphic Alu Insertions at Five Loci With HLA-DRB1 Alleles in 12 Minority Ethnic Populations in China. Front Genet 2021; 12:636236. [PMID: 34305999 PMCID: PMC8292818 DOI: 10.3389/fgene.2021.636236] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 06/08/2021] [Indexed: 01/11/2023] Open
Abstract
The analysis of polymorphic variations in the human major histocompatibility complex (MHC) class II genomic region on the short-arm of chromosome 6 is a scientific enquiry to better understand the diversity in population structure and the effects of evolutionary processes such as recombination, mutation, genetic drift, demographic history, and natural selection. In order to investigate associations between the polymorphisms of HLA-DRB1 gene and recent Alu insertions (POALINs) in the HLA class II region, we genotyped HLA-DRB1 and five Alu loci (AluDPB2, AluDQA2, AluDQA1, AluDRB1, AluORF10), and determined their allele frequencies and haplotypic associations in 12 minority ethnic populations in China. There were 42 different HLA-DRB1 alleles for ethnic Chinese ranging from 12 alleles in the Jinuo to 28 in the Yugur with only DRB1∗08:03, DRB1∗09:01, DRB1∗12:02, DRB1∗14:01, DRB1∗15:01, and DRB1∗15:02 present in all ethnic groups. The POALINs varied in frequency between 0.279 and 0.514 for AluDPB2, 0 and 0.127 for AluDQA2, 0.777 and 0.995 for AluDQA1, 0.1 and 0.455 for AluDRB1 and 0.084 and 0.368 for AluORF10. By comparing the data of the five-loci POALIN in 13 Chinese ethnic populations (including Han-Yunnan published data) against Japanese and Caucasian published data, marked differences were observed between the populations at the allelic or haplotypic levels. Five POALIN loci were in significant linkage disequilibrium with HLA-DRB1 in different populations and AluDQA1 had the highest percentage association with most of the HLA-DRB1 alleles, whereas the nearby AluDRB1 indel was strongly haplotypic for only DRB1∗01, DRB1∗10, DRB1∗15 and DRB1∗16. There were 30 five-locus POALIN haplotypes inferred in all populations with H5 (no Alu insertions except for AluDQA1) and H21 (only AluDPB2 and AluDQA1 insertions) as the two predominant haplotypes. Neighbor joining trees and principal component analyses of the Alu and HLA-DRB1 polymorphisms showed that genetic diversity of these genomic markers is associated strongly with the population characteristics of language family, migration and sociality. This comparative study of HLA-DRB1 alleles and multilocus, lineage POALIN frequencies of Chinese ethnic populations confirmed that POALINs whether investigated alone or together with the HLA class II alleles are informative genetic and evolutionary markers for the identification of allele and haplotype lineages and genetic variations within the same and/or different populations.
Collapse
Affiliation(s)
- Yina Cun
- Department of Immunogenetics, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, China
| | - Lei Shi
- Department of Immunogenetics, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, China
| | - Jerzy K Kulski
- Faculty of Health and Medical Sciences, University of Western Australia Medical School, Crawley, WA, Australia
| | - Shuyuan Liu
- Department of Immunogenetics, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, China
| | - Jia Yang
- Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Disease, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, China
| | - Yufen Tao
- Department of Immunogenetics, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, China
| | - Xinwen Zhang
- Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Disease, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, China
| | - Li Shi
- Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Disease, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, China
| | - Yufeng Yao
- Department of Immunogenetics, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, China
| |
Collapse
|
8
|
Abeid SN, Motrane M, Farhane H, Harich N. Human population genetics of Comoros islanders: Alu polymorphisms and the peopling of the three major islands. GENE REPORTS 2021. [DOI: 10.1016/j.genrep.2020.100927] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
9
|
Genomic Diversity of the Major Histocompatibility Complex in Health and Disease. Cells 2019; 8:cells8101270. [PMID: 31627481 PMCID: PMC6830316 DOI: 10.3390/cells8101270] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 10/14/2019] [Indexed: 12/20/2022] Open
|