与出生体重的罕见变异关联确定了参与脂肪组织调节,胎盘功能和胰岛素样生长因子信号传递的基因
Katherine A Kentistou1, Brandon E M Lim2, Lena R Kaisinger1
1MRC Epidemiology Unit, Box 285 Institute of Metabolic Science, University of Cambridge School of Clinical Medicine, Cambridge, UK.
Nature communications
|January 14, 2025
概括
罕见的遗传变异显著影响人类的出生体重,影响胎儿生长和长期健康. 这项研究确定了参与脂肪组织调节和胎盘功能的关键基因,提供了新的生物学见解.
科学领域:
- 遗传学 遗传学 是一个
- 人体生理学 人体生理学
- 发展生物学 发展生物学
背景情况:
- 人类出生体重是胎儿生长和长期健康的关键指标.
- 了解出生体重的遗传基础对于识别潜在的健康风险和干预措施至关重要.
- 以前的研究,包括全基因组关联研究 (GWAS),已经确定了与出生体重相关的一些遗传位置.
研究的目的:
- 研究罕见遗传变异对人类出生体重的影响.
- 识别特定的基因及其作用,考虑胎儿和母亲的影响.
- 提供对胎儿生长及其长期健康影响的生物学见解.
主要方法:
- 利用了多达234,675名参与者的整个外因组测序数据.
- 通过崩罕见的蛋白质截断和有害的误解变体进行基因负担测试.
- 分析了对出生体重的影响,考虑仅胎儿,仅母亲和综合影响.
主要成果:
- 确定了9个影响出生体重的基因,其中5个仅对胎儿有影响,1个仅对母亲有影响,3个具有两者的影响.
- 在一个独立的样本中确认了相关性,其中4个基因之前与GWAS有关.
- 突出显示的基因涉及胰岛素样生长因子信号传递 (IGF1R,PAPPA2),脂肪组织调节 (PPARG,INHBE,ACVR1C) 和胎盘功能/高血压 (NOS3,NRK,ADAMTS8).
结论:
- 罕见的编码变体在调节胎儿脂肪组织和胎儿胎盘血管生成方面发挥着重要作用,从而确定出生体重.
- 这些发现进一步证明了胰岛素类生长因子在人类发育中的关键作用.
- 这项研究阐明了出生体重的新型遗传决定因素,对胎儿生长和成人健康有潜在影响.
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