Cranial neural crest cells form corridors prefiguring sensory neuroblast migration.
Cranial neural crest cells form corridors prefiguring sensory neuroblast migration.
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DOI:
10.1242/dev.091033
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发表时间:
2013-09
期刊:
影响因子:
--
通讯作者:
Begbie J
中科院分区:
文献类型:
--
作者:
Freter S;Fleenor SJ;Freter R;Liu KJ;Begbie J
The majority of cranial sensory neurons originate in placodes in the surface ectoderm, migrating to form ganglia that connect to the central nervous system (CNS). Interactions between inward-migrating sensory neuroblasts and emigrant cranial neural crest cells (NCCs) play a role in coordinating this process, but how the relationship between these two cell populations is established is not clear. Here, we demonstrate that NCCs generate corridors delineating the path of migratory neuroblasts between the placode and CNS in both chick and mouse. In vitro analysis shows that NCCs are not essential for neuroblast migration, yet act as a superior substrate to mesoderm, suggesting provision of a corridor through a less-permissive mesodermal territory. Early organisation of NCC corridors occurs prior to sensory neurogenesis and can be recapitulated in vitro; however, NCC extension to the placode requires placodal neurogenesis, demonstrating reciprocal interactions. Together, our data indicate that NCC corridors impose physical organisation for precise ganglion formation and connection to the CNS, providing a local environment to enclose migrating neuroblasts and axonal processes as they migrate through a non-neural territory.
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影响因子:
21.3
作者:
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通讯作者:
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DOI:
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发表时间:
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期刊:
The Journal of comparative neurology
影响因子:
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DOI:
10.1073/pnas.1012248107
发表时间:
2010-12-07
影响因子:
11.1
作者:
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通讯作者:
Baker, Clare V. H.