编码神经元发育中的关键参与者ZFHX3的Haploinsufficiency导致综合征性智力障碍
María Del Rocío Pérez Baca1, Eva Z Jacobs1, Lies Vantomme1
1Center for Medical Genetics Ghent, Department of Biomolecular Medicine, Ghent University Hospital, 9000 Ghent, Belgium; Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium.
American journal of human genetics
|February 27, 2024
概括
ZFHX3中的功能丧失变体会导致综合征性智力障碍 (ID) 和自闭症谱系障碍. 这一发现将ZFHX3与神经发育障碍联系起来,并揭示了与这些疾病相关的特定DNA甲基化特征.
科学领域:
- 遗传学 是一个遗传学.
- 神经科学是一个神经科学.
- 发育生物学 发展生物学
背景情况:
- 神经发育障碍 (NDD) 源于大脑发育和功能受损.
- 智力障碍 (ID) 和自闭症谱系障碍 (ASD) 是具有复杂遗传基础的关键NDD.
- 转录因子ZFHX3在细胞分化和癌症中起作用.
研究的目的:
- 为了确定综合征性智力障碍的遗传原因.
- 研究ZFHX3在神经发育障碍中的作用.
- 描述与ZFHX3功能丧失相关的临床和分子特征.
主要方法:
- 对42名患有ZFHX3蛋白质截断变异或缺失的个体的分析.
- 临床表型包括智力障碍,自闭症,面部特征和身体特征.
- 整体血液的DNA甲基化分析.
- 在神经元分化过程中评估ZFHX3核丰度.
- 同免疫沉和ChIP-seq用于识别ZFHX3相互作用伙伴和结合部位.
主要成果:
- 在ZFHX3中功能丧失 (LoF) 变体被确定为综合征性ID的原因.
- 受影响的个体表现出可变的ID,自闭症,明显的面部特征,矮身,和手腕.
- ZFHX3 LoF与血液中的特定DNA甲基化概况有关.
- 在大脑发育和神经元分化过程中,ZFHX3的丰度增加.
- ZFHX3与染色体重塑和mRNA处理复合体相互作用,并与神经系统发育基因促进体结合.
结论:
- 在ZFHX3中功能丧失的变体是综合征性智力障碍的新奇原因.
- ZFHX3在人类大脑发育和神经元功能中起着至关重要的作用.
- 确定ZFHX3相关甲基化概况可以作为诊断生物标志物.
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