Neural tube derived signals and Fgf8 act antagonistically to specify eye versus mandibular arch muscles

Neural tube derived signals and Fgf8 act antagonistically to specify eye versus mandibular arch muscles
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神经管衍生信号和 Fgf8 拮抗作用来指定眼睛与下颌弓肌肉

DOI:
10.1242/dev.02426
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发表时间:
2006
期刊:
影响因子:
15.9
通讯作者:
S. Dietrich
S. Dietrich
中科院分区:
医学1区
文献类型:
--
作者:
G. von Scheven;L. E. Alvares;R. C. Mootoosamy;S. Dietrich

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最近在小鼠中进行的基因敲除实验产生了惊人的颅面骨骼肌表型。然而,这些基因中没有一个能被放入分子网络中,因为控制头部肌肉发育的程序尚不清楚。在这里,我们表明,拮抗信号从神经管和鳃弓指定眼外肌与鳃头肌。此外,我们将Fgf8确定为鳃弓衍生信号。然而,该分子在支持成肌细胞的增殖状态、抑制它们的分化方面具有额外的功能,而另一个鳃弓衍生的信号,即Bmp 7,是头部肌发生的总体负调节剂。
Recent knockout experiments in the mouse generated amazing craniofacial skeletal muscle phenotypes. Yet none of the genes could be placed into a molecular network, because the programme to control the development of muscles in the head is not known. Here we show that antagonistic signals from the neural tube and the branchial arches specify extraocular versus branchiomeric muscles. Moreover, we identified Fgf8 as the branchial arch derived signal. However, this molecule has an additional function in supporting the proliferative state of myoblasts, suppressing their differentiation, while a further branchial arch derived signal, namely Bmp7, is an overall negative regulator of head myogenesis.
通过外胚层和神经管衍生信号调节旁轴表达和体节形成。
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