0000000000379119

AUTHOR

Dagmar Volland

showing 2 related works from this author

Ems and Nkx6 are central regulators in dorsoventral patterning of the Drosophila brain

2009

In central nervous system development, the identity of neural stem cells (neuroblasts) critically depends on the precise spatial patterning of the neuroectoderm in the dorsoventral (DV) axis. Here, we uncover a novel gene regulatory network underlying DV patterning in the Drosophila brain, and show that the cephalic gap gene empty spiracles (ems) and the Nk6 homeobox gene (Nkx6) encode key regulators. The regulatory network implicates novel interactions between these and the evolutionarily conserved homeobox genes ventral nervous system defective (vnd), intermediate neuroblasts defective (ind) and muscle segment homeobox (msh). We show that Msh cross-repressively interacts with Nkx6 to sust…

Nervous systemEmbryo Nonmammaliananimal structuresBiologyNeuroblastmedicineAnimalsDrosophila ProteinsMolecular BiologyGap geneBody PatterningHomeodomain ProteinsGeneticsRegulation of gene expressionNeuroectodermNeural tubeBrainGene Expression Regulation DevelopmentalCell biologymedicine.anatomical_structureVentral nerve cordembryonic structuresHomeoboxDrosophilaTranscription FactorsDevelopmental BiologyDevelopment
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Segment-specific requirements for dorsoventral patterning genes during early brain development in Drosophila.

2006

An initial step in the development of the Drosophila central nervous system is the delamination of a stereotype population of neural stem cells (neuroblasts, NBs) from the neuroectoderm. Expression of the columnar genes ventral nervous system defective (vnd), intermediate neuroblasts defective (ind) and muscle segment homeobox (msh) subdivides the truncal neuroectoderm(primordium of the ventral nerve cord) into a ventral, intermediate and dorsal longitudinal domain, and has been shown to play a key role in the formation and/or specification of corresponding NBs. In the procephalic neuroectoderm(pNE, primordium of the brain), expression of columnar genes is highly complex and dynamic, and th…

Nervous systemanimal structuresCentral nervous systemPopulationBiologyNeuroblastmedicineAnimalsDrosophila ProteinseducationMolecular BiologyIn Situ HybridizationBody PatterningHomeodomain Proteinseducation.field_of_studyNeuroectodermBrainGene Expression Regulation DevelopmentalAnatomyNeural stem cellCell biologymedicine.anatomical_structureDrosophila melanogasterVentral nerve cordembryonic structuresHomeoboxNeurogliaDevelopmental BiologyTranscription FactorsDevelopment (Cambridge, England)
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