组合式CRISPR屏幕揭示了疾病基因对人类神经发育的影响
Xiangling Meng1,2, David Yao3, Kent Imaizumi1,2
1Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA.
Nature
|September 27, 2023
概括
这项研究使用CRISPR查人类大脑器官来识别影响内部神经元生成和迁移的神经发育障碍 (NDD) 的基因. 这项研究揭示了关键的基因和机制,包括神经元迁移中的内质网膜参与.
科学领域:
- 神经科学
- 发育生物学
- 遗传学
背景情况:
- 皮层电路组合依赖于内部神经元的生成和从腹部向背部前脑的迁移.
- 在怀孕晚期和产后早期研究人体内神经元发育是具有挑战性的.
- 神经发育障碍与内部神经元发育异常有关,但具体的基因功能尚不清楚.
研究的目的:
- 通过CRISPR组合平台研究425个NDD基因在人体内部神经元生成和迁移中的作用.
- 确定影响内部神经元发育及其潜在机制的特定基因.
主要方法:
- 开发一个将前脑组合与CRISPR选相结合的平台.
- 对425个NDD基因进行系统选,以检测对内部神经元产生的影响.
- 对1000多个前脑组合体进行大规模查,以确定影响内部神经元迁移的基因.
主要成果:
- 内部神经元生成查发现了13个候选基因,包括CSDE1和SMAD4.
- 内部神经元迁移查发现了33个候选基因,包括细胞骨和内网相关的基因,如LNPK.
- 发现细胞内膜网位移在内部神经元迁移过程中先发生核转移,而LNPK对于这一过程至关重要.
结论:
- 克里斯普尔组合基因平台对于系统地将NDD基因与人类发育过程进行映射具有强大功能.
- 确定了参与人体内神经元发育和迁移的新基因和机制.
- 揭示了细胞内膜网动态对神经元迁移至关重要,并与NDD相关.
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