当前位置: X-MOL 学术Cell Rep. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Cortical Neural Stem Cell Lineage Progression Is Regulated by Extrinsic Signaling Molecule Sonic Hedgehog.
Cell Reports ( IF 7.5 ) Pub Date : 2020-03-31 , DOI: 10.1016/j.celrep.2020.03.027
Yue Zhang 1 , Guoping Liu 2 , Teng Guo 2 , Xiaoyi G Liang 1 , Heng Du 2 , Lin Yang 2 , Aparna Bhaduri 3 , Xiaosu Li 2 , Zhejun Xu 2 , Zhuangzhi Zhang 2 , Zhenmeiyu Li 2 , Miao He 2 , Jeremiah Tsyporin 1 , Arnold R Kriegstein 3 , John L Rubenstein 4 , Zhengang Yang 2 , Bin Chen 1
Affiliation  

Neural stem cells (NSCs) in the prenatal neocortex progressively generate different subtypes of glutamatergic projection neurons. Following that, NSCs have a major switch in their progenitor properties and produce γ-aminobutyric acid (GABAergic) interneurons for the olfactory bulb (OB), cortical oligodendrocytes, and astrocytes. Herein, we provide evidence for the molecular mechanism that underlies this switch in the state of neocortical NSCs. We show that, at around E16.5, mouse neocortical NSCs start to generate GSX2-expressing (GSX2+) intermediate progenitor cells (IPCs). In vivo lineage-tracing study revealed that GSX2+ IPC population gives rise not only to OB interneurons but also to cortical oligodendrocytes and astrocytes, suggesting that they are a tri-potential population. We demonstrated that Sonic hedgehog signaling is both necessary and sufficient for the generation of GSX2+ IPCs by reducing GLI3R protein levels. Using single-cell RNA sequencing, we identify the transcriptional profile of GSX2+ IPCs and the process of the lineage switch of cortical NSCs.

中文翻译:

皮质神经干细胞沿袭进程由外部信号分子声波刺猬调节。

产前新皮层中的神经干细胞(NSC)逐渐生成不同类型的谷氨酸能投射神经元。随后,NSC的祖细胞特性发生了重大变化,并产生了嗅球(OB),皮质少突胶质细胞和星形胶质细胞的γ-氨基丁酸(GABAergic)中间神经元。在本文中,我们提供了新皮质NSC状态下这种转换基础的分子机制的证据。我们显示,在E16.5左右,小鼠新皮质NSC开始产生表达GSX2(GSX2 +)的中间祖细胞(IPC)。体内谱系追踪研究表明,GSX2 + IPC种群不仅引起OB间神经元,而且还引起皮质少突胶质细胞和星形胶质细胞,这表明它们是三势种群。我们证明,通过降低GLI3R蛋白水平,Sonic刺猬信号对于生成GSX2 + IPC既必要又充分。使用单细胞RNA测序,我们确定了GSX2 + IPC的转录谱和皮质NSC的谱系转换过程。
更新日期:2020-03-31
down
wechat
bug