Patterned assembly and neurogenesis in the chick dorsal root ganglion.
Patterned assembly and neurogenesis in the chick dorsal root ganglion.
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DOI:
10.1002/cne.22248
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发表时间:
2010-02-15
期刊:
影响因子:
--
通讯作者:
Lefcort F
中科院分区:
文献类型:
--
作者:
George L;Kasemeier-Kulesa J;Nelson BR;Koyano-Nakagawa N;Lefcort F
The birth of small-diameter TrkA+ neurons that mediate pain and thermo reception begins approximately 24 hours after the cessation of neural crest cell migration from progenitors residing in the nascent dorsal root ganglion. Although multiple geographically distinct progenitor pools have been proposed, this study is the first to comprehensively characterize the derivation of small diameter neurons. In the developing chick embryo, we identify novel patterns in neural crest cell migration and colonization that sculpt the incipient ganglion into a post-mitotic neuronal core encapsulated by a layer of proliferative progenitor cells. Furthermore, we show that this outer progenitor layer is composed of three spatially, temporally, and molecularly distinct progenitor zones, two of which give rise to distinct populations of TrkA+ neurons.
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影响因子:
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