Only scratching the cell surface: extracellular signals in cerebrum development.

Only scratching the cell surface: extracellular signals in cerebrum development.
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DOI:
10.1016/j.gde.2013.04.004
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发表时间:
2013-08
影响因子:
4
通讯作者:
Hebert, Jean M.
Hebert, Jean M.
中科院分区:
生物学2区
文献类型:
--
作者:
Hebert, Jean M.

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细胞外信号如成纤维细胞生长因子(FGFs)、转化生长因子-βs (tgf -βs)、Wingless-Int蛋白(wnt)和Sonic Hedgehog (SHH)在大脑发育过程中分配细胞命运的过程中已经被确定了许多作用。然而,几个基本问题在很大程度上仍未得到探索。首先,相同的细胞外信号如何指导不同位置或不同阶段的前体细胞采取不同的命运?第二,一个前体细胞是如何整合多个信号来决定一个特定的命运的?要回答这些问题,需要了解每种细胞类型对某些细胞外信号作出反应的能力背后的机制。这篇简短的综述提供了在大脑发育过程中开始弥合细胞表面和细胞命运之间差距的潜在机制的说明性例子。
Numerous roles have been identified for extracellular signals such as Fibroblast Growth Factors (FGFs), Transforming Growth Factor-βs (TGFβs), Wingless-Int proteins (WNTs), and Sonic Hedgehog (SHH) in assigning fates to cells during development of the cerebrum. However, several fundamental questions remain largely unexplored. First, how does the same extracellular signal instruct precursor cells in different locations or at different stages to adopt distinct fates? And second, how does a precursor cell integrate multiple signals to adopt a specific fate? Answers to these questions require knowing the mechanisms that underlie each cell type’s competence to respond to certain extracellular signals. This brief review provides illustrative examples of potential mechanisms that begin to bridge the gap between cell surface and cell fate during cerebrum development.
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