Neocortical neurogenesis: morphogenetic gradients and beyond.

Neocortical neurogenesis: morphogenetic gradients and beyond.
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新皮质神经发生:形态发生梯度及其他。

DOI:
10.1016/j.tins.2009.05.003
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发表时间:
2009-08
影响因子:
15.9
通讯作者:
Bhide, Pradeep G.
Bhide, Pradeep G.
中科院分区:
医学1区
文献类型:
--
作者:
Caviness, Verne S., Jr.;Nowakowski, Richard S.;Bhide, Pradeep G.

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大脑新皮质的五个细胞层中的每一层都由特定数量的单一主要“类”投射神经元组成。投射神经元类别由其独特的形态和对大脑其他区域的轴突投射来定义。胚胎侧脑室内壁的前体细胞群产生投射神经元。调节前体细胞增殖的机制还调节在特定发育时期产生并注定进入特定新皮质层的神经元总数。由于新生神经元迁移相对较长的距离才能到达其最终层目的地,因此通常假设控制神经元类特定特征获取的机制(其中许多在神经元产生后变得明显)独立于控制神经元产生的机制。我们回顾了表明这两种机制可能通过 Notch1 和 p27Kip1(已知调节前体细胞增殖和神经元产生的分子)的操作联系起来的证据。
Each of the five cellular layers of the cerebral neocortex is composed of a specific number of a single predominant ‘class’ of projection neuron. The projection neuron class is defined by its unique morphology and axonal projections to other areas of the brain. Precursor cell populations lining the embryonic lateral ventricles produce the projection neurons. The mechanisms regulating precursor cell proliferation also regulate total numbers of neurons produced at specific developmental periods and destined to a specific neocortical layer. Because the newborn neurons migrate relatively long distances to reach their final layer destinations, it is often assumed that the mechanisms governing acquisition of neuronal-class-specific characteristics, many of which become evident after neuron production, are independent of the mechanisms governing neuron production. We review evidence that suggests that the two mechanisms might be linked via operations of Notch1 and p27Kip1, molecules known to regulate precursor cell proliferation and neuron production.
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发表时间: 2004-03-02
影响因子: 11.1
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