具有进化特征的非编码区域的罕见变异有助于自闭症谱系障碍风险
Taehwan Shin1, Janet H T Song1, Michael Kosicki2
1Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA; Allen Discovery Center for Human Brain Evolution, Boston, MA 02115, USA; Department of Neurology, Harvard Medical School, Boston, MA 02115, USA; Howard Hughes Medical Institute, Boston Children's Hospital, Boston, MA 02115, USA.
Cell genomics
|July 17, 2024
概括
非编码区域的罕见遗传变异,包括人类加速区域 (HAR) 和神经增强剂,在具有共同祖先的家庭中显著促进自闭症谱系障碍 (ASD) 风险. 这些发现强调了基因调节在ASD病因学中的作用.
科学领域:
- 遗传学 是一个遗传学.
- 神经科学是一个神经科学.
- 进化生物学 进化生物学
背景情况:
- 自闭症谱系障碍 (ASD) 的遗传基础仍然不完全理解,特别是非编码DNA的贡献.
- 非编码区域,如人类加速区域 (HAR) 和神经增强剂,在基因调节和大脑发育中起着关键作用.
研究的目的:
- 研究特定非编码DNA区域在自闭症谱系障碍 (ASD) 病因学中的作用.
- 分析人类加速区域 (HARs),VISTA增强剂 (VE) 和保存的非编码元素 (CNEs) 对ASD风险的贡献.
主要方法:
- 分析了来自16600多个样本的向和全基因组数据,其中包括超过4900名ASD试验者.
- 检查简单和多重家族的变异遗传模式,重点关注来自共同祖先的家族的试验者.
主要成果:
- 罕见的,可能是衰退的,HARs,VE和CNE的遗传变异在与共同祖先的家庭中大大增加了ASD风险.
- 这些非编码变体在简单家族中贡献的贡献很小或很少.
- 在IL1RAPL1附近的HAR和OTX1和SIM1附近的VE中确定了患者变异,表明增强剂活性发生变化.
结论:
- 人类进化和保存的非编码区域都与ASD风险有关.
- 这些非编码区域的监管变化可能会调节社会行为,为ASD提供潜在的机制.
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