Vertebrate segmentation: from cyclic gene networks to scoliosis.

Vertebrate segmentation: from cyclic gene networks to scoliosis.
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DOI:
10.1016/j.cell.2011.05.011
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发表时间:
2011-05-27
期刊:
影响因子:
64.5
通讯作者:
Pourquié O
Pourquié O
中科院分区:
生物学1区
文献类型:
--
作者:
Pourquié O

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脊椎动物的体轴由一系列相似的解剖模块(称为节段或变体)重复组成。这种特殊的组织模式在脊柱中椎骨的周期性排列水平上尤其明显。当体节(脊椎动物的胚胎节段)从近轴中胚层有节奏地产生时,节段模式是在胚胎发生过程中建立的。这个过程涉及分段时钟,它是一种行进振荡器,与称为波前的成熟波相互作用,产生周期性系列的体节。最近的研究揭示了分割机制的几个方面,并提供了解释人类脊柱畸形(例如先天性脊柱侧凸)的概念框架。
The body axis of vertebrates is composed of a serial repetition of similar anatomical modules, termed segments or metameres. This particular mode of organization is especially conspicuous at the level of the periodic arrangement of vertebrae in the spine. The segmental pattern is established during embryogenesis when the somites, the embryonic segments of vertebrates, are rhythmically produced from the paraxial mesoderm. This process involves the segmentation clock, a traveling oscillator that interacts with a maturation wave called the wavefront to produce the periodic series of somites. Recent studies have shed light on several aspects of the segmentation mechanism and provide a conceptual framework to explain human spine malformations, such as congenital scoliosis.
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