Wnt signaling regulates intermediate precursor production in the postnatal dentate gyrus by regulating CXCR4 expression.

Wnt signaling regulates intermediate precursor production in the postnatal dentate gyrus by regulating CXCR4 expression.
复制标题

DOI:
10.1159/000345353
复制
发表时间:
2012
影响因子:
2.9
通讯作者:
Pleasure SJ
Pleasure SJ
中科院分区:
医学3区
文献类型:
--
作者:
Choe Y;Pleasure SJ

文献摘要

参考文献

被引文献

相似文献

以前的研究已经研究了不同的信号通路在齿状神经发生中的作用,但这些信号通路是如何整合的仍不清楚。在允许对齿状体内1型放射状祖细胞进行遗传操作的小鼠中,我们表明,强制诱导Wnt信号导致中间祖细胞(IPC)池的扩大,而选择性激活Sonic Hedgehog(Shh)信号推动神经发生,而不显著扩大IPC。因此,Wnt和Shh信号都是神经源性的,但当它们的信号被强迫进入颗粒下带放射状祖细胞时,它们的作用方式是不同的。我们在这些细胞中检测了Wnt通路的潜在靶点,发现CXCR4是齿状回前体细胞中Lef1的直接靶点,并且CXCR4在出生后神经发生中的缺失减少了IPC的产生。这表明Wnt激活齿状回前体细胞通过调节受体的表达来诱导CXCL12信号转导。这项研究提供的证据表明,不同的形态发生通路在调节正在进行的齿状神经发生中具有显著不同的作用。
Previous studies have examined the role of diverse signaling pathways in dentate neurogenesis, but how these signaling pathways are integrated remains unknown. Using mice that allow genetic manipulation of type 1 radial progenitors in the dentate, we show that forced induction of Wnt signaling leads to expansion of the intermediate progenitor cell (IPC) pool while selective activation of Sonic hedgehog (Shh) signaling drives neurogenesis without significant expansion of IPCs. Thus, both Wnt and Shh signaling are proneurogenic, but they act in distinct manners when their signaling is forced in subgranular zone radial progenitors. We examined potential targets of the Wnt pathway in these cells and found that Cxcr4 is a direct target of Lef1 in dentate gyrus progenitors and that loss of Cxcr4 in postnatal neurogenesis decreases the production of IPCs. This suggests that Wnt activation of dentate gyrus progenitors induces Cxcl12 signaling by regulating receptor expression. This study provides evidence that distinct morphogenic pathways have notably different roles in regulating ongoing dentate neurogenesis.
DOI: 10.1016/j.cell.2011.05.024
发表时间: 2011-06-24
期刊: Cell
影响因子: 64.5
作者:
Bonaguidi MA;Wheeler MA;Shapiro JS;Stadel RP;Sun GJ;Ming GL;Song H
通讯作者: Song H
DOI: 10.1016/j.neuron.2011.11.036
发表时间: 2012-02-23
期刊: Neuron
影响因子: 16.2
作者:
Choe Y;Siegenthaler JA;Pleasure SJ
通讯作者: Pleasure SJ
DOI: 10.1038/nn.2397
发表时间: 2009-10-01
影响因子: 25
作者:
Favaro, Rebecca;Valotta, Menella;Nicolis, Silvia K.
通讯作者: Nicolis, Silvia K.
DOI: 10.1101/lm.1172609
发表时间: 2009-02-01
期刊: LEARNING & MEMORY
影响因子: 2
作者:
Jessberger, Sebastian;Clark, Robert E.;Gage, Fred H.
通讯作者: Gage, Fred H.
DOI: 10.1371/journal.pone.0027262
发表时间: 2011
期刊: PloS one
影响因子: 3.7
作者:
Fuster-Matanzo A;Llorens-Martín M;de Barreda EG;Ávila J;Hernández F
通讯作者: Hernández F