直接和间接的神经新生来自小鼠新皮质中的放射性质原始细胞克隆
Dan Shen1, Xin-Yi Wang1, Ruo-Hang Liu1
1Jing'an District Central Hospital of Shanghai, Institutes of Brain Science, State Key Laboratory of Brain Function and Disorders, MOE Frontiers Center for Brain Science, Fudan University, 200032, Shanghai, China.
The EMBO journal
|November 20, 2025
概括
大脑发育依赖于放射性质原生细胞 (RGP) 来形成新皮质. 这项研究揭示了RGP细胞分裂如何直接和间接地影响神经元产生和新皮层发育.
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:
- 新皮层的大小和复杂性是由从放射性质原生细胞 (RGP) 的神经发生决定的.
- 神经发生可能是直接的 (RGP到神经元) 或间接的 (RGP到神经元的中间原生细胞).
- 直接/间接神经发生与新皮质结果的确切机制尚未完全理解.
研究的目的:
- 为了研究在新皮层发育过程中放射性质原始细胞 (RGP) 细胞分裂的克隆动态.
- 阐明如何顺序的RGP划分有助于神经元生产和新皮层架构.
- 了解直接和间接神经生成之间的过渡模式.
主要方法:
- 开发了一种基于复原病毒和FlashTag的复合标签技术,用于克隆追踪.
- 在体内对连续的RGP分裂和后代鉴定进行了克隆分析.
- 利用数学建模来分析细胞分裂动态.
主要成果:
- 产生神经原 (N),中间原体 (IP) 和增殖中间原体 (IPP) 细胞的RGP细胞分裂产生相似数量的金字塔神经元.
- RGP细胞的早期神经元后代在新皮质中表现出"内外"的分布模式.
- RGP细胞表现出随机的初始后代,随后在直接和间接的神经发生之间进行稳定的过渡.
结论:
- 提供了对皮层神经发生过程中细胞分裂动态的新理解.
- 证明RGP细胞分裂模式有助于新皮层的"内外"形成.
- 突出了神经发生过程中的随机性和稳定性在连续细胞分裂中的相互作用.
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