在NRDC中双基变异导致神经发育障碍,其特点是新生儿死亡率,小头症和大脑异常
Davut Pehlivan1, Abigail Sandoval2, Reza Maroofian3
1Section of Pediatric Neurology and Developmental Neuroscience, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA; Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA; Texas Children's Hospital, Houston, TX, USA; Jan and Dan Duncan Neurological Research Institute at Texas Children's Hospital, Houston, TX, USA.
American journal of human genetics
|February 24, 2026
概括
纳迪利辛 (NRDC) 基因中的致病变体会导致严重的,往往致命的神经发育障碍. 这项研究在14个人中确定了同卵性NRDC变异,详细说明了它们的显著临床特征,并证实了NRDC在人类发育中的重要作用.
科学领域:
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
- 神经科学是一个神经科学.
背景情况:
- 纳迪利辛 (NRDC) 参与了关键的细胞过程,包括生体外膜分离和线粒体功能.
- 以前的报道表明,NRDC中具有同卵性框架转移变异的个体的临床数据有限.
研究的目的:
- 描述与同卵性NRDC变异相关的神经发育障碍的临床谱和遗传基础.
- 通过细胞和模型生物研究来研究已识别的NRDC变异的功能影响.
主要方法:
- 临床数据收集和分析来自9个家庭的14个具有同卵性NRDC变异的个体.
- 变体分析包括拼接,移和误解类型.
- 使用RT-PCR的功能研究,HEK293T细胞中的小基因测定,以及Drosophila melanogaster Nrdc (dNrdc) 突变模型.
主要成果:
- 在14个个体中发现了同胞性NRDC致病变体,呈现出严重的神经发育现象型.
- 共同特征包括严重的发育迟缓,小头症,早产,早期死亡,发作,关节收缩,视觉异常和大脑形.
- 功能性研究证实,拼接和框架转移变体导致NRDC功能丧失,而误解变体导致部分功能丧失,与观察到的表型相关.
结论:
- 在NRDC基因的同卵性变异是致病的,并导致人类严重的,高度致命的神经发育障碍.
- NRDC对于正常的人类神经发育至关重要,其功能丧失变异导致显著的临床后果.
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