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亨廷顿病的大脑器官模型将重点转向神经发育

Wenqing Xu^1,2, Alessandro Prigione²

¹Faculty of Mathematics and Natural Sciences, Heinrich Heine University, 40225 Düsseldorf, Germany.

Disease models & mechanisms

|October 28, 2025

概括

亨廷顿病 (HD) 涉及早期的神经发育问题,由突变亨廷丁 (mHTT) 引起. 早期准线粒体健康和神经性可能会预防或延迟HD的发病和进展.

科学领域:

神经科学是一个神经科学.
发育生物学发展生物学
遗传学遗传学是一个

背景情况:

亨廷顿病 (HD) 通常被认为是与年龄相关的.
新出现的证据表明,突变的亨廷丁 (mHTT) 影响早期的神经发育.
发育变化的作用在晚期发病的HD是不清楚的.

研究的目的:

研究mHTT对人类发育中的大脑的影响.
探索潜在的治疗策略,针对HD的早期发育变化.

主要方法:

利用了人类多能干细胞衍生的脑器官.
分析了神经祖先的组织和功能.
评估了线粒体应激反应.

主要成果:

在HD模型中观察到神经前体组织和功能受损.
检测到线粒体应激反应,表明细胞应激管理能力降低.
确定了增强线粒体健康和神经细胞弹性的潜力.

结论:

发育的改变,包括线粒体功能障碍,有助于亨廷顿病.
针对线粒体健康和神经发育途径的早期治疗干预可以预防或延迟HD.
通过早期干预来增强大脑的补偿机制是一个有希望的策略.

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Huntington Disease l: Introduction

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Huntington disease or HD is a progressive, fatal neurodegenerative disorder inherited in an autosomal dominant pattern.PathophysiologyIt is caused by expansion of the CAG trinucleotide repeat in the HTT gene on chromosome 4 (4p16.3), producing an abnormal huntingtin protein with an expanded polyglutamine tract. This misfolded protein disrupts cellular function, leading to neuronal death. Normal alleles have ≤26 repeats, 27–35 are intermediate (risk of expansion), 36–39 show reduced penetrance,...