title: Chromatin remodeling during the in vivo glial differentiation in early Drosophila embryos.
abstract: Chromatin remodeling plays a critical role in gene regulation and impacts many biological processes. However, little is known about the relationship between chromatin remodeling dynamics and in vivo cell lineage commitment. Here, we reveal the patterns of histone modification change and nucleosome positioning dynamics and their epigenetic regulatory roles during the in vivo glial differentiation in early Drosophila embryos. The genome-wide average H3K9ac signals in promoter regions are decreased in the glial cells compared to the neural progenitor cells. However, H3K9ac signals are increased in a group of genes that are up-regulated in glial cells and involved in gliogenesis. There occurs extensive nucleosome remodeling including shift, loss, and gain. Nucleosome depletion regions (NDRs) form in both promoters and enhancers. As a result, the associated genes are up-regulated. Intriguingly, NDRs form in two fashions: nucleosome shift and eviction. Moreover, the mode of NDR formation is independent of the original chromatin state of enhancers in the neural progenitor cells.
authors.affiliation: Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai Key Laboratory of Signaling and Disease Research, the School of Life Sciences and Technology, the Collaborative Innovation Center for Brain Science, Tongji University, Shanghai 200092, China.
authors.forename: Youqiong
authors.initials: Y
authors.lastname: Ye
authors.affiliation: Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai Key Laboratory of Signaling and Disease Research, the School of Life Sciences and Technology, the Collaborative Innovation Center for Brain Science, Tongji University, Shanghai 200092, China.
authors.forename: Liang
authors.initials: L
authors.lastname: Gu
authors.affiliation: Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai Key Laboratory of Signaling and Disease Research, the School of Life Sciences and Technology, the Collaborative Innovation Center for Brain Science, Tongji University, Shanghai 200092, China.
authors.forename: Xiaolong
authors.initials: X
authors.lastname: Chen
authors.affiliation: Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai Key Laboratory of Signaling and Disease Research, the School of Life Sciences and Technology, the Collaborative Innovation Center for Brain Science, Tongji University, Shanghai 200092, China.
authors.forename: Jiejun
authors.initials: J
authors.lastname: Shi
authors.affiliation: Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai Key Laboratory of Signaling and Disease Research, the School of Life Sciences and Technology, the Collaborative Innovation Center for Brain Science, Tongji University, Shanghai 200092, China.
authors.forename: Xiaobai
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai Key Laboratory of Signaling and Disease Research, the School of Life Sciences and Technology, the Collaborative Innovation Center for Brain Science, Tongji University, Shanghai 200092, China.
authors.forename: Cizhong
authors.initials: C
authors.lastname: Jiang
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D042002:Chromatin Assembly and Disassembly; D004331:Drosophila melanogaster / Q000166:cytology* / Q000196:embryology*; D004625:Embryo, Nonmammalian / Q000166:cytology* / Q000378:metabolism; D057809:HEK293 Cells; D006801:Humans; D008810:Mice, Inbred C57BL; D009457:Neuroglia / Q000166:cytology* / Q000378:metabolism*