与CUX1相关的神经发育障碍:深入了解表型-基因型谱和潜在病理
Henry Oppermann1, Elia Marcos-Grañeda2, Linnea A Weiss2
1Institute of Human Genetics, University of Leipzig Medical Center, Leipzig, Germany. Henry.oppermann@medizin.uni-leipzig.de.
European journal of human genetics : EJHG
|August 29, 2023
概括
CUX1基因中的致病变异会导致发育迟缓和智力障碍. 在某些情况下,随着年龄的增长,症状会改善,这表明CUX1表达平衡的作用.
科学领域:
- 遗传学 是一个遗传学.
- 神经发育障碍 神经发育障碍
- 分子生物学分子生物学
背景情况:
- CUX1基因中的异构性致病变体与全球发育迟缓和智力障碍有关.
- 了解CUX1相关疾病的临床谱和分子基础至关重要.
研究的目的:
- 在扩大队列中划分CUX1变异的临床表现.
- 用小鼠模型研究CUX1相关的神经发育障碍的分子机制.
主要方法:
- 收集了34名患有CUX1变异的个体的表型和分子数据.
- 在Cux1+/-小鼠模型中分析了大脑CUX1表达和发作易感性.
主要成果:
- 描述了34个患有26个无和4个错误的CUX1变异的个体,呈现出发育迟缓,智力障碍,低血压和发作.
- Cux1+/-小鼠表现出增长延迟,大脑组织结构正常,并增加了发作易感性.
- 在异卵性小鼠中观察到CUX1蛋白表达的减少,在成年人中减少的程度比在出生后早期更大.
结论:
- 引起疾病的CUX1变异导致发育迟缓和智力残疾的非综合征表型.
- 在一些人身上观察到的成年期的表型改善和正常智商表明年龄取决于恢复.
- 发育中的大脑中CUX1表达的转录后调节对于有利的临床结果至关重要.
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