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首页> 外文期刊>Neuron >Tbr1 regulates differentiation of the preplate and layer 6.
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Tbr1 regulates differentiation of the preplate and layer 6.

机译:Tbr1调节预制板和第6层的差异。

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摘要

During corticogenesis, early-born neurons of the preplate and layer 6 are important for guiding subsequent neuronal migrations and axonal projections. Tbr1 is a putative transcription factor that is highly expressed in glutamatergic early-born cortical neurons. In Tbr1-deficient mice, these early-born neurons had molecular and functional defects. Cajal-Retzius cells expressed decreased levels of Reelin, resulting in a reeler-like cortical migration disorder. Impaired subplate differentiation was associated with ectopic projection of thalamocortical fibers into the basal telencephalon. Layer 6 defects contributed to errors in the thalamocortical, corticothalamic, and callosal projections. These results show that Tbr1 is a common genetic determinant for the differentiation of early-born glutamatergic neocortical neurons and provide insights into the functions of these neurons as regulators of cortical development.
机译:在皮质发生过程中,前导板和第6层的早产神经元对于指导随后的神经元迁移和轴突投射很重要。 Tbr1是假定的转录因子,在谷氨酸能的早产皮质神经元中高度表达。在Tbr1缺陷型小鼠中,这些早期出生的神经元具有分子和功能缺陷。 Cajal-Retzius细胞表达的Reelin水平降低,从而导致Reeler样皮质迁移障碍。亚板分化受损与丘脑皮层纤维异位投射到基底端脑有关。第6层缺陷会导致丘脑皮层,皮层丘脑和call骨突起的错误。这些结果表明,Tbr1是分化早期谷氨酸能新皮层神经元的常见遗传决定因素,并提供了对这些神经元作为皮层发育调节剂的功能的见解。

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