在RERE中,一个新的变异通过破坏相关基因和信号通路导致自闭症行为
Qian Li1,2,3, Wenbo Li1,2, Kaiyue Hu1,2
1The First Affiliated Hospital of Zhengzhou University & Institute of Reproductive Health, Henan Academy of Innovations in Medical Science, Zhengzhou, Henan, China.
Clinical genetics
|November 29, 2023
概括
在一个患有自闭症行为的孩子身上,发现了RERE基因的新变异. 这一遗传发现突显了RERE在自闭症谱系障碍 (ASD) 病变发生过程中的作用.
科学领域:
- 神经遗传学 神经遗传学
- 分子生物学分子生物学
- 发育神经科学的发展神经科学.
背景情况:
- 自闭症谱系障碍 (ASD) 是一种复杂的神经发育状况,具有多样化的遗传基础.
- 特定基因的新变异越来越多地被认为是ASD的原因.
- 了解这些变异的分子机制对于开发向疗法至关重要.
研究的目的:
- 为了研究RERE基因变异在患有自闭症行为的患者中的影响.
- 阐明了与RERE相关的ASD背后的分子机制.
- 识别受损的信号通路和基因表达变化.
主要方法:
- 桑格测序用于识别RERE变种.
- 编辑CRISPR/Cas9基因以创建一个RERE突变细胞系 (ReMut).
- 免疫光学,RNA测序和质谱学用于分析分子变化.
主要成果:
- 在RERE基因中发现了一种致病性de novo变异 (c.3732delC).
- 在ReMut细胞中观察到基因表达 (3790个基因) 和蛋白质水平 (684个蛋白质) 的显著变化.
- 发现了SHH信号通路的下调和Hippo通路的上调,以及关键自闭症相关基因 (CNTNAP2,STX1A,FARP2,GPC1) 的表达减少以及HDAC1/HDAC2.2的改变.
结论:
- 一种新的RERE变种与自闭症行为,智力障碍和发育迟缓有关.
- RERE变种破坏关键信号通路 (SHH,Hippo) 和参与神经发育的基因表达网络.
- 这项研究提供了关于ASD遗传基础和RERE突变的功能后果的见解.
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