The Notch-regulated ankyrin repeat protein is required for proper anterior-posterior somite patterning in mice.

The Notch-regulated ankyrin repeat protein is required for proper anterior-posterior somite patterning in mice.
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DOI:
10.1002/dvg.20813
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发表时间:
2012-04
期刊:
影响因子:
1.5
通讯作者:
Gridley, Thomas
Gridley, Thomas
中科院分区:
生物学4区
文献类型:
--
作者:
Krebs, Luke T.;Bradley, Cara K.;Norton, Christine R.;Xu, Jingxia;Oram, Kathleen F.;Starling, Christa;Deftos, Michael L.;Bevan, Michael J.;Gridley, Thomas

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Notch调节的锚蛋白重复序列蛋白(Nrarp)是负反馈系统的一个组成部分,它减弱Notch途径介导的信号传导。在脊椎动物中,中胚层体节形成的时间和间隔是由一种称为体节时钟的分子振荡器控制的。体节也沿胚胎的头尾轴沿着排列。在这里,我们证明了Nrarp缺陷的胚胎和小鼠表现出遗传背景依赖性的中轴骨骼缺陷。虽然进展的分割时钟发生在Nrarp缺陷的胚胎,他们表现出改变rostrocaudal图案的体节。在Nrarp突变体胚胎中,后体节隔室扩大。这些研究证实了预期的,但以前没有记录的作用,Nrarp基因在脊椎动物体节图案,并提供了一个例子的强烈影响,遗传背景发挥突变小鼠表现出的表型。创世纪50:366-374,2012。© 2011 Wiley Periodicals,Inc.
The Notch-regulated ankyrin repeat protein (Nrarp) is a component of a negative feedback system that attenuates Notch pathway-mediated signaling. In vertebrates, the timing and spacing of formation of the mesodermal somites are controlled by a molecular oscillator termed the segmentation clock. Somites are also patterned along the rostral-caudal axis of the embryo. Here, we demonstrate that Nrarp-deficient embryos and mice exhibit genetic background-dependent defects of the axial skeleton. While progression of the segmentation clock occurred in Nrarp-deficient embryos, they exhibited altered rostrocaudal patterning of the somites. In Nrarp mutant embryos, the posterior somite compartment was expanded. These studies confirm an anticipated, but previously undocumented role for the Nrarp gene in vertebrate somite patterning and provide an example of the strong influence that genetic background plays on the phenotypes exhibited by mutant mice. genesis 50:366–374, 2012. © 2011 Wiley Periodicals, Inc.
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发表时间: 2009-01
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