在GSPT2中有害的,改变蛋白质的变异被假定与智力障碍,语言障碍,自闭症和等X相关的神经发育障碍有关
Yuda Wei1, Kai Liu1, Changrui Mi2
1Department of Laboratory Medicine, Key Laboratory for Laboratory Medicine of Linyi City, Shandong Provincial Medicine and Health Key Laboratory for Precise Diagnosis of Hereditary Rare Diseases, Linyi People's Hospital, Shandong Second Medical University, Linyi, Shandong, China; Department of Medical Genetics, Linyi People's Hospital, Shandong Second Medical University, Linyi, Shandong, China.
概括
新的研究将GSPT2基因与X相关的神经发育障碍 (NDD) 联系起来. GSPT2中的变异破坏细胞周期和信号通路,影响大脑发育.
科学领域:
- 遗传学 遗传学是一种遗传学.
- 神经科学是一个神经科学.
- 分子生物学分子生物学
背景情况:
- 与X相关的神经发育障碍 (NDD) 占遗传神经疾病的很大一部分.
- 位于X染色体上的GSPT2基因以前没有与任何孟德尔病有关.
研究的目的:
- 调查GSPT2基因与NDD之间的潜在的基因型-表型关联.
- 探索GSPT2变体对与大脑发育相关的细胞过程的功能影响.
主要方法:
- 对怀疑NDD和半性GSPT2变体的个体进行临床评估.
- 用细胞系统 (H4神经瘤细胞) 进行基因组分析,结构分子建模和功能研究.
- 转录基因,RT-PCR和蛋白质基因分析以评估基因表达变化.
主要成果:
- 来自无亲属家庭的六个人呈现出与智力障碍,性发育障碍,自闭症谱系障碍,或胎儿神经发育异常相关的半性GSPT2变体.
- 通过分子建模,识别的GSPT2变体显示了有害的影响;GSPT2在大脑中表达很高.
- 细胞中的GSPT2缺乏导致细胞增殖减少,细胞循环基因下调,GABAergic和信号通路基因的表达减少.
结论:
- 这项研究表明一种新的与GSPT2相关的X相关NDD.
- 细胞循环进展和/GABAergic信号通路的失调与GSPT2相关的NDD有关.
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