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首页> 外文期刊>Neuron >Neural bHLH genes control the neuronal versus glial fate decision in cortical progenitors.
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Neural bHLH genes control the neuronal versus glial fate decision in cortical progenitors.

机译:神经bHLH基因控制着皮质祖细胞中神经元与神经胶质命运的决定。

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We have addressed the role of the proneural bHLH genes Neurogenin2 (Ngn2) and Mash1 in the selection of neuronal and glial fates by neural stem cells. We show that mice mutant for both genes present severe defects in development of the cerebral cortex, including a reduction of neurogenesis and a premature and excessive generation of astrocytic precursors. An analysis of wild-type and mutant cortical progenitors in culture showed that a large fraction of Ngn2; Mash1 double-mutant progenitors failed to adopt a neuronal fate, instead remaining pluripotent or entering an astrocytic differentiation pathway. Together, these results demonstrate that proneural genes are involved in lineage restriction of cortical progenitors, promoting the acquisition of the neuronal fate and inhibiting the astrocytic fate.
机译:我们已经解决了proneural bHLH基因Neurogenin2(Ngn2)和Mash1在通过神经干细胞选择神经元和神经胶质命运中的作用。我们表明,这两个基因的小鼠突变体在大脑皮层的发展中表现出严重的缺陷,包括神经发生的减少和星形胶质细胞前体的过早生成。对培养物中的野生型和突变型皮质祖细胞的分析表明,很大一部分的Ngn2。 Mash1双突变祖细胞未能采用神经元命运,而是保持多能性或进入星形细胞分化途径。在一起,这些结果表明,proneural基因参与了皮质祖细胞的谱系限制,促进了神经元命运的获得并抑制了星形胶质细胞的命运。

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