了解青春期定时的遗传复杂性,跨过等位基因频谱
Katherine A Kentistou1, Lena R Kaisinger1, Stasa Stankovic1
1MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Institute of Metabolic Science, Cambridge Biomedical Campus, Cambridge, UK.
Nature genetics
|July 1, 2024
概括
对80万名女性的基因分析确定了1080个初潮时的年龄信号,影响了青春期的时间和相关的健康风险. ZNF483修改多基因风险效应的罕见变体.
科学领域:
- 遗传学 遗传学 是一个
- 生殖生物学 生殖生物学
- 内分泌学 在内分泌学.
背景情况:
- 青春期的时间表显示出显著的变化,影响长期的健康结果.
- 了解青春期时间的遗传结构对于识别相关的健康风险至关重要.
研究的目的:
- 进行大规模的,多祖先的遗传分析,以确定与初潮时的年龄相关的遗传位置.
- 调查罕见变异和特定基因在调节青春期时间中的作用.
- 探索潜在的生物学途径,将生殖时间与晚年健康联系起来.
主要方法:
- 在约80万名女性中进行全基因组关联研究 (GWAS),以确定初潮时年龄的常见变异信号.
- 在约20万名妇女中分析了罕见的功能丧失变体.
- 变异对基因映射和小鼠性腺激素释放激素神经元RNA测序.
主要成果:
- 确定了1080个初经年龄的遗传信号,解释了11%的特征变异.
- 极端多基因风险得分与延迟和早发性期的风险显著增加有关.
- 罕见的ZNF483变体消除了多基因风险的影响;GPR83参与了MC3R信号传递.
- 鉴定了665个基因,包括GPR83,并建议卵巢储备,DNA损伤反应和青春期时间之间的联系.
结论:
- 大规模的遗传研究显示,遗传对青春期的时间有很大的影响.
- 常见和罕见的遗传变异都起着关键的作用,具有潜在的相互作用.
- 涉及营养感知,DNA损伤反应和身体大小的机制可能会将生殖时间与健康联系起来.
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