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The expression of Scratch genes in the developing and adult brain

AuthorsMarín, Faustino; Nieto, M. Ángela
KeywordsNeuronal differentiation
Schwann cells
Zinc finger transcription factors
Subventricular zone
Issue DateSep-2006
CitationDevelopmental Dynamics 235(9): 2586-2591 (2006)
AbstractThe Scratch genes belong to the Snail superfamily of zinc-finger transcription factors present in the metazoa, represented in mammals by the Scratch1 and Scratch2 genes. We have analyzed the expression of these genes in the brain of mice at developmental stages between 9.5 days-post-coitum to adulthood. Both genes are expressed in the mantle layer of the neuroepithelium at mid-gestational stages in all regions except for the region corresponding to the V2 interneuron column, which lacked Scratch2 transcripts. From perinatal to adult stages, the expression patterns of the two genes differ. Scratch1 remains strongly expressed in almost all brain regions, although it is not found in some ventral structures such as motor nuclei and hypothalamic regions. In contrast, Scratch2 expression progressively diminishes and virtually no expression can be detected in the adult brain. Nevertheless, strong expression of Scratch2 is retained in the postnatal cortical subventricular zone, in the inner part of the cerebellar external granular layer, and in the glial cells of the adult vomeronasal nerve.
Description6 páginas, 4 figuras.
Publisher version (URL)http://dx.doi.org/10.1002/dvdy.20869
Appears in Collections:(IN) Artículos
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