在GSK3B中单基因功能丧失变异导致自闭症和发育迟缓
Senwei Tan1, Qiumeng Zhang1, Rui Zhan1
1Center for Medical Genetics & MOE Key Lab of Rare Pediatric Diseases, School of Life Sciences, Central South University, Changsha, Hunan, China.
Molecular psychiatry
|October 30, 2024
概括
潜在的拼接破坏变异 (PSDVs) 最近涉及到自闭症谱系障碍 (ASD) 遗传学. GSK3B变体会导致神经发育障碍与ASD特征,突出显示PSDVs.
科学领域:
- 遗传学 是一个遗传学.
- 神经科学是一个神经科学.
- 发展生物学 发展生物学
背景情况:
- 在自闭症谱系障碍 (ASD) 中,靠近拼接部位的de novo变异尚未得到充分研究.
- 潜在的剪接破坏变异 (PSDVs) 可能有助于ASD的遗传病因.
研究的目的:
- 调查ASD中新版PSDV的负担和影响.
- 为了识别新的ASD候选基因,包括GSK3B.
- 描述与GSK3B变体相关的神经发育表型.
主要方法:
- 对大型ASD基因组测序队列的分析 (5048个试验组,4090个对照组).
- 在变异不耐受基因中识别复发的de novoPSDV.
- 对具有GSK3B变异的个体进行国际基因型-表型数据收集.
- 单细胞转录组学和小鼠Gsk3b敲除模型.
主要成果:
- 与兄弟姐妹相比,在ASD试验者中发现了大量的de novoPSDV.
- 发现了55个高度不容忍变异的基因,具有反复的新发性PSDV;46个是新的ASD候选者.
- 15名携带GSK3B变异的个体表现出发育迟缓,自闭症,睡眠障碍和攻击性.
- 在发育激发性神经元时,GSK3B被丰富;Gsk3b的淘汰会损害神经元的发育.
结论:
- 在ASD的遗传基础上,PSDVs代表了一个重要的,未被认可的因素.
- GSK3B变体与神经发育障碍相关,具有自闭症和发育迟缓的核心特征.
- 这项研究优先考虑了新的ASD候选基因,并扩大了对GSK3B在神经发育中的作用的理解.
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