{"title":"男女双胞胎 X 染色体上的 DNA 甲基化变异与年龄有关","authors":"Qihua Tan, Hikmat Alo, Marianne Nygaard, Mette Sørensen, Alisa Saleh, Jonas Mengel-From, Kaare Christensen","doi":"10.3390/epigenomes8040043","DOIUrl":null,"url":null,"abstract":"<p><p>We aimed to explore the age-dependent epigenetic variability on the X-chromosome with consideration of X-chromosome inactivation by applying a sex-stratified regression analysis to DNA methylation array data on X-linked CpGs in aging identical twins. We found 13 X-linked CpGs showing age-related significant increase in variability in males (FDR < 0.05) but none in females. In females, we found a significantly higher proportion of CpGs showing increased variability with age among nominally significant (<i>p</i> < 0.05) CpGs under inactivation, but not among CpGs escaping inactivation. Survival analysis showed a slight trend of correlation by directional change in the variable CpGs with mortality in males. Compared with females, the male X-chromosome can be more vulnerable to epigenetic instability during aging.</p>","PeriodicalId":55768,"journal":{"name":"Epigenomes","volume":"8 4","pages":""},"PeriodicalIF":2.5000,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Age-Dependent DNA Methylation Variability on the X-Chromosome in Male and Female Twins.\",\"authors\":\"Qihua Tan, Hikmat Alo, Marianne Nygaard, Mette Sørensen, Alisa Saleh, Jonas Mengel-From, Kaare Christensen\",\"doi\":\"10.3390/epigenomes8040043\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>We aimed to explore the age-dependent epigenetic variability on the X-chromosome with consideration of X-chromosome inactivation by applying a sex-stratified regression analysis to DNA methylation array data on X-linked CpGs in aging identical twins. We found 13 X-linked CpGs showing age-related significant increase in variability in males (FDR < 0.05) but none in females. In females, we found a significantly higher proportion of CpGs showing increased variability with age among nominally significant (<i>p</i> < 0.05) CpGs under inactivation, but not among CpGs escaping inactivation. Survival analysis showed a slight trend of correlation by directional change in the variable CpGs with mortality in males. Compared with females, the male X-chromosome can be more vulnerable to epigenetic instability during aging.</p>\",\"PeriodicalId\":55768,\"journal\":{\"name\":\"Epigenomes\",\"volume\":\"8 4\",\"pages\":\"\"},\"PeriodicalIF\":2.5000,\"publicationDate\":\"2024-11-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Epigenomes\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.3390/epigenomes8040043\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"GENETICS & HEREDITY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Epigenomes","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3390/epigenomes8040043","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"GENETICS & HEREDITY","Score":null,"Total":0}
引用次数: 0
摘要
我们的目的是通过对老龄同卵双胞胎 X 连锁 CpGs 的 DNA 甲基化阵列数据进行性别分层回归分析，在考虑 X 染色体失活的情况下，探索 X 染色体上与年龄相关的表观遗传变异。我们发现有 13 个 X 连锁 CpGs 在男性中出现了与年龄相关的显著变异性增加（FDR < 0.05），但在女性中却没有发现。在女性中，我们发现在名义上显著（p < 0.05）的失活 CpGs 中，随年龄变异性增加的 CpGs 比例明显更高，但在逃脱失活的 CpGs 中则没有。存活率分析表明，可变 CpGs 的方向性变化与男性的死亡率有轻微的相关趋势。与女性相比，男性的X染色体在衰老过程中更容易受到表观遗传不稳定性的影响。
Age-Dependent DNA Methylation Variability on the X-Chromosome in Male and Female Twins.
We aimed to explore the age-dependent epigenetic variability on the X-chromosome with consideration of X-chromosome inactivation by applying a sex-stratified regression analysis to DNA methylation array data on X-linked CpGs in aging identical twins. We found 13 X-linked CpGs showing age-related significant increase in variability in males (FDR < 0.05) but none in females. In females, we found a significantly higher proportion of CpGs showing increased variability with age among nominally significant (p < 0.05) CpGs under inactivation, but not among CpGs escaping inactivation. Survival analysis showed a slight trend of correlation by directional change in the variable CpGs with mortality in males. Compared with females, the male X-chromosome can be more vulnerable to epigenetic instability during aging.
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