功能性皮质脊柱状神经元与内源性SOX6+/NG2+皮质原始细胞的有针对性的分化
bioRxiv : the preprint server for biology
|May 7, 2024
概括
研究人员开发了一种新方法,可以从皮质前代产生皮质脊柱状神经元 (CSN). 这一进步为研究神经退行性疾病 (如ALS和脊髓损伤) 提供了一个重要的体外模型.
科学领域:
- 神经科学是一个神经科学.
- 发展生物学 发展生物学
- 细胞生物学 细胞生物学
背景情况:
- 皮层脊髓神经元 (CSN) 对于自愿运动至关重要,但在肌缩侧面硬化症 (ALS) 和脊髓损伤 (SCI) 中退化.
- 现有的体外模型无法准确地复制CSN亚型,限制了对ALS,SCI和神经元再生的研究.
- 转录因子 Sox6 调节皮质中的原始细胞命运.
研究的目的:
- 建立一个可靠的体外系统,从皮层祖先中产生特定的皮层脊髓神经元 (CSN).
- 为了研究Sox6在抑制皮层前代细胞内潜伏的神经原生程序中的作用.
- 开发一种定向差异化方法,用于创建疾病研究和治疗查的CSN模型.
主要方法:
- 从出生后小鼠皮质中净化Sox6+/NG2+皮质原始细胞的FACS净化.
- 建立一个纯的祖先培养系统,用于有针对性的差异化.
- 使用一种多组件的转录控制结构,激活Neurog2和Fezf2,同时对抗Olig2.
主要成果:
- 从Sox6+/NG2+皮质前代成功生成皮质脊柱状神经元 (CSN),对体内CSN具有高保真性.
- 这些差异化的神经元表现出适当的形态,分子标记物,转录组形状和电生理学特性.
- 标准Neurog2驱动的分化产生了异常神经元,具有混合亚型特征,与Sox6控制的方法不同.
结论:
- 一个基于Sox6的定向分化协议从基因可访问的皮质祖先产生真实的CSN模型.
- 这种方法为体外机理学研究和ALS和SCI的治疗查提供了基础.
- 这些发现为神经元重组和电路修复的再生方法铺平了道路.
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