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获得功能的KIDINS220变体破坏神经元发育并导致脑

Jin Zhang¹, Yandong Zhang², Qing Shang³

¹Children's Hospital of Fudan University and Institutes of Biomedical Sciences of Fudan University, Shanghai, China.

Movement disorders : official journal of the Movement Disorder Society

|December 27, 2023

概括

基因变异在KIDINS220影响遗传模式,并导致脑. 一种特定的无意义变异导致功能获取,通过Rac1过度激活引起神经发育缺陷.

科学领域:

神经科学是一个神经科学.
遗传学是一个遗传学.
分子生物学分子生物学

背景情况:

220kDa的激酶D相互作用基质 (KIDINS220) 是神经元发育中的关键支架蛋白.
KIDINS220功能障碍与具有自体主导 (AD) 或衰退 (AR) 遗传的神经系统疾病有关.
双重遗传模式和KIDINS220在神经发育中的确切作用仍然不清楚.

研究的目的:

研究KIDINS220.20的基因型-表型相关性.
阐明KIDINS220在神经元发育中的病理生理作用.

主要方法:

在一个脑的家庭中进行全外体序列测序.
在CRISPR/Cas9基因编辑中创建KIDINS220突变细胞系.
在子宫内进行电穿孔,以评估KIDINS220变体对神经发生的影响.

主要成果:

在KIDINS220中确定了一种与AD脑相关的病原性无意义变体 (c.4177C>T,p.Q1393*).
证明终端外因子无意义变异作为功效增益 (GoF) 突变,产生一个截断的,耐卡尔巴因的KIDINS220蛋白质.
观察到截断的KIDINS220的积累,导致Rac1过度激活和神经元发育受损.

结论:

在KIDINS220中变异位置决定了遗传模式和临床结果.
在Rac1-KIDINS220的相互作用提供了新的洞察力,脑的发病因子.
研究结果表明,对于与KIDINS220相关的神经发育障碍的潜在治疗策略.

关键词:

孩子们22020年在Rac1Rac1中,我们可以使用Rac1Rac1.脑性麻脑性麻是一种神经元发育的神经元发育截断的蛋白质是截断的蛋白质.

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