Journal
DEVELOPMENT
Volume 130, Issue 23, Pages 5649-5661Publisher
COMPANY BIOLOGISTS LTD
DOI: 10.1242/dev.00810
Keywords
VICKZ protein family; RNA-binding proteins; neural crest; roof plate; cell movement; Xenopus
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After mid-blastula transition, populations of cells within the Xenopus embryo become motile. Using antisense morpholino oligonucleotides, we find that Vg1 RBP, an RNA-binding protein implicated in RNA localization in oocytes, is required for the migration of cells forming the roof plate of the neural tube and, subsequently, for neural crest migration. These cells are properly determined but remain at their site of origin. Consistent with a possible role in cell movement, Vg1 RBP asymmetrically localizes to extended processes in migrating neural crest cells. Given that Vg1 RBP is a member of the conserved VICKZ family of proteins, expressed in embryonic and neoplastic cells, these data shed light on the likely role of these RNA-binding proteins in regulating cell movements during both development and metastasis.
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