Vincenzo Iannuzzi, Stefania Sarno, Marco Sazzini, Paolo Abondio, Claudia Sala, Maria Giulia Bacalini, Davide Gentilini, Luciano Calzari, Federica Masciotta, Paolo Garagnani, Gastone Castellani, Edgardo Moretti, Maria Cristina Dasso, Federica Sevini, Zelda Alice Franceschi, Claudio Franceschi, Davide Pettener, Donata Luiselli, Cristina Giuliani
{"title":"Wichí和阿根廷Criollos的表观遗传衰老差异:来自基因组历史和生态学的见解。","authors":"Vincenzo Iannuzzi, Stefania Sarno, Marco Sazzini, Paolo Abondio, Claudia Sala, Maria Giulia Bacalini, Davide Gentilini, Luciano Calzari, Federica Masciotta, Paolo Garagnani, Gastone Castellani, Edgardo Moretti, Maria Cristina Dasso, Federica Sevini, Zelda Alice Franceschi, Claudio Franceschi, Davide Pettener, Donata Luiselli, Cristina Giuliani","doi":"10.1093/emph/eoad034","DOIUrl":null,"url":null,"abstract":"<p><strong>Background and objectives: </strong>Epigenetic estimators based on DNA methylation levels have emerged as promising biomarkers of human aging. These estimators exhibit natural variations across human groups, but data about indigenous populations remain underrepresented in research. This study aims to investigate differences in epigenetic estimators between two distinct human populations, both residing in the Gran Chaco region of Argentina, the Native-American Wichí, and admixed Criollos who are descendants of intermarriages between Native Americans and the first European colonizers, using a population genetic approach.</p><p><strong>Methodology: </strong>We analyzed 24 Wichí (mean age: 39.2 ± 12.9 yo) and 24 Criollos (mean age: 41.1 ± 14.0 yo) for DNA methylation levels using the Infinium MethylationEPIC (Illumina) to calculate 16 epigenetic estimators. Additionally, we examined genome-wide genetic variation using the HumanOmniExpress BeadChip (Illumina) to gain insights into the genetic history of these populations.</p><p><strong>Results: </strong>Our results indicate that Native-American Wichí are epigenetically older compared to Criollos according to five epigenetic estimators. Analyses within the Criollos population reveal that global ancestry does not influence the differences observed, while local (chromosomal) ancestry shows positive associations between specific SNPs located in genomic regions over-represented by Native-American ancestry and measures of epigenetic age acceleration (AgeAccelHannum). Furthermore, we demonstrate that differences in population ecologies also contribute to observed epigenetic differences.</p><p><strong>Conclusions and implications: </strong>Overall, our study suggests that while the genomic history may partially account for the observed epigenetic differences, non-genetic factors, such as lifestyle and ecological factors, play a substantial role in the variability of epigenetic estimators, thereby contributing to variations in human epigenetic aging.</p>","PeriodicalId":12156,"journal":{"name":"Evolution, Medicine, and Public Health","volume":null,"pages":null},"PeriodicalIF":3.3000,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10632719/pdf/","citationCount":"0","resultStr":"{\"title\":\"Epigenetic aging differences between Wichí and Criollos from Argentina: Insights from genomic history and ecology.\",\"authors\":\"Vincenzo Iannuzzi, Stefania Sarno, Marco Sazzini, Paolo Abondio, Claudia Sala, Maria Giulia Bacalini, Davide Gentilini, Luciano Calzari, Federica Masciotta, Paolo Garagnani, Gastone Castellani, Edgardo Moretti, Maria Cristina Dasso, Federica Sevini, Zelda Alice Franceschi, Claudio Franceschi, Davide Pettener, Donata Luiselli, Cristina Giuliani\",\"doi\":\"10.1093/emph/eoad034\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Background and objectives: </strong>Epigenetic estimators based on DNA methylation levels have emerged as promising biomarkers of human aging. These estimators exhibit natural variations across human groups, but data about indigenous populations remain underrepresented in research. This study aims to investigate differences in epigenetic estimators between two distinct human populations, both residing in the Gran Chaco region of Argentina, the Native-American Wichí, and admixed Criollos who are descendants of intermarriages between Native Americans and the first European colonizers, using a population genetic approach.</p><p><strong>Methodology: </strong>We analyzed 24 Wichí (mean age: 39.2 ± 12.9 yo) and 24 Criollos (mean age: 41.1 ± 14.0 yo) for DNA methylation levels using the Infinium MethylationEPIC (Illumina) to calculate 16 epigenetic estimators. Additionally, we examined genome-wide genetic variation using the HumanOmniExpress BeadChip (Illumina) to gain insights into the genetic history of these populations.</p><p><strong>Results: </strong>Our results indicate that Native-American Wichí are epigenetically older compared to Criollos according to five epigenetic estimators. Analyses within the Criollos population reveal that global ancestry does not influence the differences observed, while local (chromosomal) ancestry shows positive associations between specific SNPs located in genomic regions over-represented by Native-American ancestry and measures of epigenetic age acceleration (AgeAccelHannum). 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Epigenetic aging differences between Wichí and Criollos from Argentina: Insights from genomic history and ecology.
Background and objectives: Epigenetic estimators based on DNA methylation levels have emerged as promising biomarkers of human aging. These estimators exhibit natural variations across human groups, but data about indigenous populations remain underrepresented in research. This study aims to investigate differences in epigenetic estimators between two distinct human populations, both residing in the Gran Chaco region of Argentina, the Native-American Wichí, and admixed Criollos who are descendants of intermarriages between Native Americans and the first European colonizers, using a population genetic approach.
Methodology: We analyzed 24 Wichí (mean age: 39.2 ± 12.9 yo) and 24 Criollos (mean age: 41.1 ± 14.0 yo) for DNA methylation levels using the Infinium MethylationEPIC (Illumina) to calculate 16 epigenetic estimators. Additionally, we examined genome-wide genetic variation using the HumanOmniExpress BeadChip (Illumina) to gain insights into the genetic history of these populations.
Results: Our results indicate that Native-American Wichí are epigenetically older compared to Criollos according to five epigenetic estimators. Analyses within the Criollos population reveal that global ancestry does not influence the differences observed, while local (chromosomal) ancestry shows positive associations between specific SNPs located in genomic regions over-represented by Native-American ancestry and measures of epigenetic age acceleration (AgeAccelHannum). Furthermore, we demonstrate that differences in population ecologies also contribute to observed epigenetic differences.
Conclusions and implications: Overall, our study suggests that while the genomic history may partially account for the observed epigenetic differences, non-genetic factors, such as lifestyle and ecological factors, play a substantial role in the variability of epigenetic estimators, thereby contributing to variations in human epigenetic aging.
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Founded by Stephen Stearns in 2013, Evolution, Medicine, and Public Health is an open access journal that publishes original, rigorous applications of evolutionary science to issues in medicine and public health. It aims to connect evolutionary biology with the health sciences to produce insights that may reduce suffering and save lives. Because evolutionary biology is a basic science that reaches across many disciplines, this journal is open to contributions on a broad range of topics.
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