Cadherin-6B is required for the generation of Islet-1-expressing dorsal interneurons.

Cadherin-6B is required for the generation of Islet-1-expressing dorsal interneurons.
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Cadherin-6B 是表达 Islet-1 的背侧中间神经元生成所必需的。

DOI:
10.1016/j.bbrc.2015.02.136
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发表时间:
2015
影响因子:
3.1
通讯作者:
Gumbiner,BarryM
Gumbiner,BarryM
中科院分区:
生物学4区
文献类型:
--
作者:
Park,Ki-Sook;Gumbiner,BarryM

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钙粘蛋白-6B诱导骨形态发生蛋白(BMP)信号转导,促进神经棘上皮间充质转化(EMT)。我们先前已经发现,下调钙粘连蛋白-6B既抑制了BMP信号转导,也抑制了早期迁移前神经脊细胞从背侧神经管中的迁移。在这项研究中,我们发现抑制神经管中的BMP信号,通过Smad-6或Noggin的异位表达,减少了胰岛-1阳性的背部细胞群的大小。钙粘连蛋白-6B的敲除或功能丧失抑制了背侧神经管中表达胰岛-1的细胞的产生,但不抑制LIM-1/2阳性的背侧神经管细胞群。因此,我们的结果表明,钙粘素-6B对于胰岛-1阳性背侧中间神经元的产生以及迁移前神经脊细胞迁移的启动是必需的。
Cadherin-6B induces bone morphogenetic protein (BMP) signaling to promote the epithelial mesenchymal transition (EMT) in the neural crest. We have previously found that knockdown of Cadherin-6B inhibits both BMP signaling and the emigration of the early pre-migratory neural crest cells from the dorsal neural tube. In this study, we found that inhibition of BMP signaling in the neural tube, mediated by the ectopic expression of Smad-6 or Noggin, decreased the size of the Islet-1-positive dorsal cell population. Knockdown or loss of function of Cadherin-6B suppressed the generation of Islet-1-expressing cells in the dorsal neural tube, but not the Lim-1/2 positive dorsal cell population. Our results thus indicate that Cadherin-6B is necessary for the generation of Islet-1-positive dorsal interneurons, as well as the initiation of pre-migratory neural crest cell emigration.
神经嵴从神经管的迁移取决于调节的钙粘蛋白表达。
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