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  • Title: B1 and B2 Sox gene expression during neural plate development in chicken and mouse embryos: universal versus species-dependent features.
    Author: Uchikawa M, Yoshida M, Iwafuchi-Doi M, Matsuda K, Ishida Y, Takemoto T, Kondoh H.
    Journal: Dev Growth Differ; 2011 Aug; 53(6):761-71. PubMed ID: 21762129.
    Abstract:
    Cumulative evidence now indicates pivotal roles for the group B1 Sox genes, Sox1, Sox2 and Sox3 in the genesis and development of neural primordia. Shared functions for the Sox1, Sox2 and Sox3 protein products have also been indicated. This emphasizes the importance and integral role of the group B1 Sox genes in regulating the neural primordia. We here review what is currently known about the expression patterns of both the group B1 Sox genes and the related group B2 Sox21 gene during the embryonic stages when the neural plate develops. These expression profiles are compared between the chicken and mouse embryos, both representatives of amniote species. This comparison indicates a gross conservation of the regulation of individual Sox genes, yet also demonstrates the existence of species-dependent variations, which should be taken into account when data from different species are being compared. To link the expression patterns and transcriptional regulation of these genes, contribution of gene-specific enhancers are discussed. The regulation of B1 Sox genes in the axial stem cells, the common precursors to the posterior neural plate and paraxial mesoderm and located at the posterior end of developing neural plate, is also highlighted in this review. This article thus provides a guide to performing readouts of B1/B2 Sox expression data during neural plate development in amniotes.
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