Beta-catenin-mediated Wnt signaling regulates neurogenesis in the ventral telencephalon.
Beta-catenin-mediated Wnt signaling regulates neurogenesis in the ventral telencephalon.
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DOI:
10.1038/nn.2226
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发表时间:
2008-12
影响因子:
25
通讯作者:
Anderson, Stewart A.
中科院分区:
文献类型:
--
作者:
Gulacsi, Alexandra A.;Anderson, Stewart A.
Development of the telencephalon involves the coordinated growth of diversely patterned brain structures. Previous studies have demonstrated the importance of β-catenin-mediated Wnt signaling in proliferation and fate determination during cerebral cortical development. In this paper, we present novel evidence that β-catenin-mediated Wnt signaling also critically maintains progenitor proliferation in the subcortical (pallidal) telencephalon of mice. Targeted deletion of β-catenin severely impairs proliferation in the medial ganglionic eminence without grossly altering differentiated fate. Several lines of evidence suggest that this phenotype is primarily due to loss of canonical Wnt signaling. As previous studies have suggested that the ventral patterning factor Shh also stimulates dorsal telencephalic proliferation, we propose a model whereby Wnt and Shh signaling promote distinct dorsal-ventral patterning, while also having broader effects on proliferation that serve to coordinate the growth of telencephalic subregions.
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DOI:
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影响因子:
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