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• W2912341255 abstract "Spatial and temporal cues are required to specify neuronal diversity, but how these cues are integrated in neural progenitors remains unknown. Drosophila progenitors (neuroblasts) are a good model: they are individually identifiable with relevant spatial and temporal transcription factors known. Here we test whether spatial/temporal factors act independently or sequentially in neuroblasts. We used Targeted DamID to identify genomic binding sites of the Hunchback temporal factor in two neuroblasts (NB5-6 and NB7-4) that make different progeny. Hunchback targets were different in each neuroblast, ruling out the independent specification model. Moreover, each neuroblast had distinct open chromatin domains, which correlated with differential Hb-bound loci in each neuroblast. Importantly, the Gsb/Pax3 spatial factor, expressed in NB5-6 but not NB7-4, had genomic binding sites correlated with open chromatin in NB5-6, but not NB7-4. Our data support a model in which early-acting spatial factors like Gsb establish neuroblast-specific open chromatin domains, leading to neuroblast-specific temporal factor binding and the production of different neurons in each neuroblast lineage." @default.
• W2912341255 created "2019-02-21" @default.
• W2912341255 creator A5032923229 @default.
• W2912341255 creator A5034142069 @default.
• W2912341255 creator A5076618806 @default.
• W2912341255 creator A5077877871 @default.
• W2912341255 date "2019-01-29" @default.
• W2912341255 modified "2023-09-27" @default.
• W2912341255 title "Neuroblast-specific open chromatin allows the temporal transcription factor, Hunchback, to bind neuroblast-specific loci" @default.
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• W2912341255 doi "https://doi.org/10.7554/elife.44036" @default.
• W2912341255 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6377230" @default.
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• W2912341255 hasPublicationYear "2019" @default.
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