Detecting Genetic Ancestry and Adaptation in the Taiwanese Han People
| Autor: | Chen-Yang Shen, Mei-Ling Kang, Shu-Miaw Chaw, Chia-Ni Hsiung, Chun-Yu Chen, Yun-Hua Lo, Hou-Wei Chu, Chien-Hsiun Chen, Yoko Satta, Chiao-Feng Lin, Jun-Hun Loo, Mei Hsuan Lee, Chia-Wei Peng, Han-Yu Wang, Marie Lin, Cheng-Jui Lin, Kung-Ping Lin, Show-Ling Yang, Quintin Liu, Wen Ya Ko, Hsueh-Chien Cheng |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Candidate gene
Genetic genealogy Population adaptation Biology Southeast asian AcademicSubjects/SCI01180 03 medical and health sciences 0302 clinical medicine Genetics education Molecular Biology Genotyping Ecology Evolution Behavior and Systematics Discoveries 030304 developmental biology 0303 health sciences education.field_of_study Natural selection ancestry Taiwanese Han Haplotype AcademicSubjects/SCI01130 natural selection Evolutionary biology admixture Adaptation 030217 neurology & neurosurgery |
| Zdroj: | Molecular Biology and Evolution |
| ISSN: | 1537-1719 0737-4038 |
| Popis: | The Taiwanese people are composed of diverse indigenous populations and the Taiwanese Han. About 95% of the Taiwanese identify themselves as Taiwanese Han, but this may not be a homogeneous population because they migrated to the island from various regions of continental East Asia over a period of 400 years. Little is known about the underlying patterns of genetic ancestry, population admixture, and evolutionary adaptation in the Taiwanese Han people. Here, we analyzed the whole-genome single-nucleotide polymorphism genotyping data from 14,401 individuals of Taiwanese Han collected by the Taiwan Biobank and the whole-genome sequencing data for a subset of 772 people. We detected four major genetic ancestries with distinct geographic distributions (i.e., Northern, Southeastern, Japonic, and Island Southeast Asian ancestries) and signatures of population mixture contributing to the genomes of Taiwanese Han. We further scanned for signatures of positive natural selection that caused unusually long-range haplotypes and elevations of hitchhiked variants. As a result, we identified 16 candidate loci in which selection signals can be unambiguously localized at five single genes: CTNNA2, LRP1B, CSNK1G3, ASTN2, and NEO1. Statistical associations were examined in 16 metabolic-related traits to further elucidate the functional effects of each candidate gene. All five genes appear to have pleiotropic connections to various types of disease susceptibility and significant associations with at least one metabolic-related trait. Together, our results provide critical insights for understanding the evolutionary history and adaption of the Taiwanese Han population. |
| Databáze: | OpenAIRE |
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