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带有NACC1 c.892C > T p.R298W误解突变的ESC衍生人类皮质神经元与影响神经元成熟的对照细胞具有分子差异

Mark Deehan¹, Ellen Sapp¹, Andrew Iwanowicz¹

¹Department of Neurology, MassGeneral Institute for Neurodegenerative Disease (MIND), Massachusetts General Hospital, 114 16th Street, Charlestown, MA 02129, United States.

Human molecular genetics

|September 5, 2025

概括

一种新的Nucleus accumbens相关蛋白1 (NACC1) 突变导致严重的神经发育障碍. 这项研究揭示了皮层神经元的分子变化,

科学领域:

神经科学
遗传学
发育生物学

背景情况:

核相关蛋白1 (NACC1) 基因的新突变与一种罕见的严重神经发育障碍有关.
了解这种疾病背后的分子机制对于潜在的治疗干预至关重要.

研究的目的:

在分化为皮层神经元的人类胚胎干细胞 (ESC) 中研究NACC1 R298W突变的功能后果.
在细胞模型中阐明受NACC1突变影响的分子途径.

主要方法:

使用基因组编辑生成人类同位素ESC线 (对照,异位素和同位素).
将ESC分化为皮层神经元和随后的分子分析 (Western blot,RNAseq,qPCR).
生物信息分析包括基因本体学 (GO) 和 SynGO 术语分析.

主要成果:

突变神经元表现出增加的NACC1蛋白水平.
鉴定出与突触前和突触后信号传递,细胞外基质和细胞粘附相关的显著转录变化.
观察到关键突触蛋白 (SNAP25,VAMP2,SYNGAP1) 的表达增加以及神经干细胞对原的附着性增强.
这种突变促进了皮层细胞的腹部发育模式.

结论:

NACC1 R298W突变导致皮层神经元的显著分子和功能变化.
这些突触功能,细胞粘附和模式的变化可能会导致神经发育障碍的表型.
这项研究提供了一个用于研究NACC1相关神经发育障碍的细胞模型.

关键词:

在 NACC1 粘附性细胞外基质神经发育障碍一个突触

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