新的ANKRD17变种涉及到智力障碍和自闭症谱系障碍中的突触和线粒体干扰
Dan Xia1, Yuanyuan Xu2,3, Zhanwen He4
1Cellular and Molecular Diagnostics Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510220, China.
Journal of neurodevelopmental disorders
|July 3, 2025
概括
新的ANKRD17基因变异与智力障碍 (ID) 和自闭症谱系障碍 (ASD) 有关. 鼠标模型显示,Ankrd17缺乏会影响社会行为和线粒体功能,这对于这些神经发育障碍至关重要.
科学领域:
- 遗传学和神经发育障碍 遗传学和神经发育障碍
- 疾病的分子机制.
背景情况:
- 建议ANKRD17基因参与智力障碍 (ID) 和自闭症谱系障碍 (ASD),但根本机制尚不清楚.
- ANKRD17中的遗传变异越来越多地被认为是神经发育状况的原因.
研究的目的:
- 通过识别和表征新的遗传变异来调查ANKRD17在ID和ASD中的作用.
- 阐明将ANKRD17功能障碍与神经发育缺陷联系起来的分子机制.
主要方法:
- 三种全外体序列测序 (Trio-WES) 和染色体微阵列分析 (CMA) 用于在两个无关的病例中确定 de novo ANKRD17 变体.
- 采用小鼠模型来研究Ankrd17的行为和分子后果的Haploinsufficiency和Knockdown.
主要成果:
- 确定了两个与新出现的异合体ANKRD17变体有无关的病例:病例1的微删除和病例2的无意义变体.
- 在小鼠中,Ankrd17的哈普隆缺陷导致社会行为缺陷,空间学习和记忆受损,焦虑增加.
- 在小鼠模型中,ANKRD17的淘汰导致突触蛋白质的失调,线粒体功能受损,神经回路受损.
结论:
- 这些发现扩大了ANKRD17相关疾病的已知遗传和表型谱,包括ID和ASD.
- 线粒体功能障碍被强调为ANKRD17相关的ID和ASD病理生理学的关键因素.
- ANKRD17在神经发育,突触功能和线粒体平衡中发挥着重要作用.
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