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"SHANK3缺乏改变了早期的祖先动态,并揭示了与神经退行症的共同途径"

Elisa Varella-Branco¹, Elizabeth Shephard², Victor H C Toledo¹

¹Centro de Pesquisa sobre o Genoma Humano e Células Tronco (CEGH-CEL), Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil.

Molecular psychiatry

|January 31, 2026

概括

费兰-麦克德米德综合征 (PMS) 涉及SHANK3基因的破坏,影响神经发育并导致回归. 这项研究揭示了分子和大脑活动的变化,提供了潜在的治疗标记.

科学领域:

神经科学是一个神经科学.
遗传学遗传学是一个
发展生物学发展生物学

背景情况:

费兰-麦克德米德综合征 (PMS) 是一种复杂的神经发育障碍,主要是由SHANK3单质缺陷引起的.
在PMS发育回归背后的机制尚不清楚.
SHANK3在突触功能和神经元发育中起着至关重要的作用.

研究的目的:

调查SHANK3中断对PMS中基因表达,细胞功能和大脑网络活动的影响.
为了确定与PMS回归相关的分子和神经生理学标记.
探索PMS的潜在治疗点.

主要方法:

来自患者的iPSC神经元和对照的RNA测序.
分析神经前体扩散和神经元形态.
在PMS患者和对照中进行电生理学记录和体内EEG.
分子数据与临床回归表型的相关性.

主要成果:

在与细胞周期,RNA代谢和神经元功能相关的途径中,SHANK3干扰失调基因表达.
发生SHANK3突变的神经元显示出改变的原始细胞增殖,减少了形态复杂性和过度兴奋性.
经前综合征患者在EEG上表现出高连接性和过度高频振荡,表明大脑网络动态发生了变化.
涉及神经发育和神经退行性疾病的基因被丰富在失调的模块中.

结论:

SHANK3的哈普洛因不足会破坏神经发育轨迹,导致PMS.
在PMS的回归可能与神经退行性疾病共享分子途径.
确定了分子和神经生理学标志物,可以为PMS的治疗策略提供信息.

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