FOXG1 Orchestrates Neocortical Organization and Cortico-Cortical Connections.

FOXG1 Orchestrates Neocortical Organization and Cortico-Cortical Connections.
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DOI:
10.1016/j.neuron.2018.10.016
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发表时间:
2018-12-05
期刊:
影响因子:
16.2
通讯作者:
Lee SK
Lee SK
中科院分区:
医学1区
文献类型:
--
作者:
Cargnin F;Kwon JS;Katzman S;Chen B;Lee JW;Lee SK

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FOXG 1综合征的特征是由单个FOXG 1等位基因突变引起的,包括皮质萎缩和胼胝体发育不全。然而,这些结构缺陷的病因和FOXG 1在皮质投射神经元中的作用仍不清楚。在这里,我们表明,Foxg 1在锥体神经元中起着至关重要的作用,在建立皮质层和胼胝体投射神经元的身份和轴突轨迹。Foxg 1的神经元特异性作用通过与Rp 58形成转录复合物来实现。Foxg 1-Rp 58复合物直接结合并抑制Robo 1、Slit 3和Reelin基因,这些基因是胼胝体轴突导向和神经元迁移的关键调节因子。我们还发现,一个Foxg 1等位基因的失活,特别是在皮质神经元是足以导致大脑皮质发育不全和胼胝体发育不全。总之,这项研究揭示了一种新的基因调控途径,指定大脑皮层发育过程中的神经元特征,并揭示了FOXG 1综合征的病因。Cargnin等报道了FOXG 1转录因子在构建功能性大脑皮层中的重要作用。这项研究揭示了人类疾病FOXG 1综合征的发病机制。
The hallmarks of FOXG1 syndrome, which results from mutations in a single FOXG1 allele, include cortical atrophy and corpus callosum agenesis. However, the etiology for these structural deficits and the role of FOXG1 in cortical projection neurons remain unclear. Here we demonstrate that Foxg1 in pyramidal neurons plays essential roles in establishing cortical layers and the identity and axon trajectory of callosal projection neurons. The neuron-specific actions of Foxg1 are achieved by forming a transcription complex with Rp58. The Foxg1-Rp58 complex directly binds and represses Robo1, Slit3, and Reelin genes, the key regulators of callosal axon guidance and neuronal migration. We also found that inactivation of one Foxg1 allele specifically in cortical neurons was sufficient to cause cerebral cortical hypoplasia and corpus callosum agenesis. Together, this study reveals a novel gene regulatory pathway that specifies neuronal characteristics during cerebral cortex development and sheds light on the etiology of FOXG1 syndrome. Cargnin et al. report essential roles of FOXG1 transcription factor in building the functional cerebral cortex. This study sheds light on the disease mechanism of human disorder FOXG1 syndrome.
DOI: 10.1073/pnas.0510419103
发表时间: 2006-01-31
影响因子: 11.1
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FOXG1 综合征的核心表型包括出生后小头畸形、严重智力低下、语言缺失、运动障碍和胼胝体发育不全。
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