对环境中毒物暴露的综合性转录基因和表观基因洞察:塔吉特II资源
Bo A Zhang1,2, Benpeng Miao3, Shuhua Fu1,2
1Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63108, USA.
bioRxiv : the preprint server for biology
|August 6, 2025
概括
早期接触有毒化学物质会导致表观基因组和转录基因组的持久变化. 转录II的基因组和表观基因组调节器 (TaRGET II) 研究的毒素暴露和反应为了解疾病的这些分子基础提供了资源.
科学领域:
- 环境表观遗传学和毒理学
- 基因组学和转录基因组学
- 疾病的病原发生 疾病的病原发生
背景情况:
- 环境中毒物会破坏基因调节,影响整个生命周期的健康.
- 了解早期暴露于有毒物质的长期分子影响对于预防疾病至关重要.
研究的目的:
- 在生命早期暴露后,各种环境毒素引起的持久表观基因组和转录基因组变化的特征.
- 创建一个全面的,公开可访问的资源,用于研究有毒剂引起的疾病的分子基础.
主要方法:
- 转录II的基因组和表观基因组调节器的毒素暴露和反应 (TaRGET II) 联盟从纵向小鼠研究中生成了表观基因组和转录基因组数据.
- 从不同生命阶段 (断奶,成年) 的多种组织 (肝脏,大脑,肺,心脏,血液) 收集数据.
- 分析了对一组有毒物质的分子反应,包括,,BPA,DEHP,TBT,TCDD和PM2.5.
主要成果:
- 在表观基因组和转录基因组资料中观察到持久的,毒素特异性的和取决于性别的变化.
- 显著的变化包括基因表达中断 (14,908个基因),修改的染色质可访问性 (87,409个元素),DNA甲基化变化 (113,186个区域) 和基因组修改转移.
- 一张高分辨率的地图详细说明了环境暴露如何重编程表观基因组和转录基因组.
结论:
- 早期的环境毒素暴露会导致持久的分子变化,这有助于疾病风险.
- 目标II资源为研究环境毒素引起的疾病机制提供了有价值的工具.
- 通过ToxiTaRGET数据库向公众提供数据,有助于进一步研究环境健康问题.
关键词:
通过DNA甲基化.疾病的发育起源 (DOHaD)基质子的修改 基质子的修改有毒性与表观遗传学(As) 是一种.双甲 (BPA) 是一种在这种情况下,染色染色素二氧化物 (TCDD) 的使用.基因表达的基因表达方式(Pb) 的使用.颗粒物 (PM2.5) 颗粒物 (PM2.5) 颗粒物 (PM2.5) 颗粒物 (PM2.5) 颗粒物 (PM2.5) 颗粒物 (PM2.5) 颗粒物 (PM2.5) 颗粒物 (PM2.5) 颗粒物甲甲酸盐 (DEHP) 的使用三乙 (TBT) 的使用.更多相关视频
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