语与伴侣蛋白质cyclophilin 40中的一种致病变体有关
Angela T Morgan1,2, Thomas S Scerri1,3,4, Adam P Vogel2,5,6
1Murdoch Children's Research Institute, Parkville 3052, Australia.
Brain : a journal of neurology
|November 17, 2023
概括
PPID基因中的遗传变异与持续的口吃有关. 一种新的小鼠模型显示,受影响家庭中语与语相一致的大脑变化.
科学领域:
- 遗传学 是一个遗传学.
- 神经科学是一个神经科学.
- 语言障碍 语音障碍 语言障碍
背景情况:
- 吃是一种常见的语言障碍,影响流利,通常与家族聚类有关.
- 以前的研究将口吃与编码 lysosomal pathway 蛋白质的基因罕见变异联系在一起.
研究的目的:
- 在一个大家庭中调查持续口吃的遗传基础.
- 确定特定的遗传变异及其相关的神经机制.
- 开发和验证一个临床前模型,以研究口吃.
主要方法:
- 在受影响的家庭成员中对外体序列进行测序,以确定遗传变异.
- 分离分析以确认变种的遗传模式.
- 一个Ppid p.Pro270Ser敲进鼠标模型的生成.
- 在小鼠模型中的体内成像 (扩散权重MRI,定量敏感度映射).
主要成果:
- 鉴定了一种PPID c.808C>T (p.Pro270Ser) 变种,在自体主导家族中与口吃分离.
- 鼠标模型在皮质脊髓中表现出微观结构变化.
- 图像检测揭示了小鼠模型中皮质-状-甲状腺-皮质环组织组成的变化.
- 这些发现与受影响人类家庭成员的神经成像观察结果一致.
结论:
- 这项研究涉及一个伴侣蛋白 (PPID) 在的病原体.
- 皮德小鼠模型成功地重复了在人类口吃中观察到的关键网络发现.
- 这项研究为口吃提供了新的遗传和机理洞察力.
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