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XB-ART-5184
Dev Cell June 1, 2003; 4 (6): 827-39.

The protooncogene c-myc is an essential regulator of neural crest formation in xenopus.

Bellmeyer A , Krase J , Lindgren J , LaBonne C .


Abstract
The neural crest, a population of multipotent progenitor cells, is a defining feature of vertebrate embryos. Neural crest precursor cells arise at the neural plate border in response to inductive signals, but much remains to be learned about the molecular mechanisms underlying their induction. Here we show that the protooncogene c-Myc is an essential early regulator of neural crest cell formation in Xenopus. c-myc is localized at the neural plate border prior to the expression of early neural crest markers, such as slug. A morpholino-mediated "knockdown" of c-Myc protein results in the absence of neural crest precursor cells and a resultant loss of neural crest derivatives. These effects are not dependent upon changes in cell proliferation or cell death. Instead, our findings reveal an important and unexpected role for c-Myc in the specification of cell fates in the early ectoderm.

PubMed ID: 12791268
Article link: Dev Cell
Grant support: [+]
Genes referenced: acta4 actc1 actl6a chrd.1 egr2 myc mycn pax6 snai1 snai2 sox10 tubb2b twist1 zic1
Morpholinos: myc MO2 mycn MO1


Article Images: [+] show captions


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