Chromatin state changes during neural development revealed by in vivo cell-type specific profiling

A key question in developmental biology is how cellular differentiation is controlled during development. While transitions between trithorax-group (TrxG) and polycomb-group (PcG) chromatin states are vital for the differentiation of ES cells to multipotent stem cells, little is known regarding the...

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Published in:Nature communications 2017-12, Vol.8 (1), p.2271-2271, Article 2271
Main Authors: Marshall, Owen J., Brand, Andrea H.
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Language:English
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13/100
38
38/23
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Animals
Brain
Cell Differentiation - genetics
Chromatin - metabolism
Chromatin Assembly and Disassembly - genetics
Chromatin remodeling
Developmental biology
Differentiation (biology)
Drosophila
Fruit flies
Gene Expression Regulation, Developmental
Genes
Humanities and Social Sciences
multidisciplinary
Neural stem cells
Neural Stem Cells - metabolism
Neurogenesis - genetics
Neurons - metabolism
Pattern formation
Polycomb group proteins
Science
Science (multidisciplinary)
Stem cells
Transcription factors
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description A key question in developmental biology is how cellular differentiation is controlled during development. While transitions between trithorax-group (TrxG) and polycomb-group (PcG) chromatin states are vital for the differentiation of ES cells to multipotent stem cells, little is known regarding the role of chromatin states during development of the brain. Here we show that large-scale chromatin remodelling occurs during Drosophila neural development. We demonstrate that the majority of genes activated during neuronal differentiation are silent in neural stem cells (NSCs) and occupy black chromatin and a TrxG-repressive state. In neurons, almost all key NSC genes are switched off via HP1-mediated repression. PcG-mediated repression does not play a significant role in regulating these genes, but instead regulates lineage-specific transcription factors that control spatial and temporal patterning in the brain. Combined, our data suggest that forms of chromatin other than canonical PcG/TrxG transitions take over key roles during neural development. While transitions between active and repressive chromatin states are essential for differentiation, little is known regarding their role during development of the brain in Drosophila . Here, the authors investigate the large scale chromatin remodelling taking place during fly neural development.
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subjects 13/100
38
38/23
38/39
631/208/176
631/337/100
631/532
631/532/2182
64/24
Animals
Brain
Cell Differentiation - genetics
Chromatin - metabolism
Chromatin Assembly and Disassembly - genetics
Chromatin remodeling
Developmental biology
Differentiation (biology)
Drosophila
Fruit flies
Gene Expression Regulation, Developmental
Genes
Humanities and Social Sciences
multidisciplinary
Neural stem cells
Neural Stem Cells - metabolism
Neurogenesis - genetics
Neurons - metabolism
Pattern formation
Polycomb group proteins
Science
Science (multidisciplinary)
Stem cells
Transcription factors
title Chromatin state changes during neural development revealed by in vivo cell-type specific profiling
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