Search: id:"swepub:oai:DiVA.org:su-133375" >
Initiation of diver...
-
Boija, AnnStockholms universitet,Institutionen för molekylär biovetenskap, Wenner-Grens institut
(author)
Initiation of diverse epigenetic states during nuclear programming of the Drosophila body plan
- Article/chapterEnglish2016
Publisher, publication year, extent ...
-
2016-07-20
-
Proceedings of the National Academy of Sciences,2016
-
printrdacarrier
Numbers
-
LIBRIS-ID:oai:DiVA.org:su-133375
-
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-133375URI
-
https://doi.org/10.1073/pnas.1516450113DOI
Supplementary language notes
-
Language:English
-
Summary in:English
Part of subdatabase
Classification
-
Subject category:ref swepub-contenttype
-
Subject category:art swepub-publicationtype
Notes
-
Epigenetic patterns of histone modifications contribute to the maintenance of tissue-specific gene expression. Here, we show that such modifications also accompany the specification of cell identities by the NF-kappa B transcription factor Dorsal in the precellular Drosophila embryo. We provide evidence that the maternal pioneer factor, Zelda, is responsible for establishing poised RNA polymerase at Dorsal target genes before Dorsal-mediated zygotic activation. At the onset of cell specification, Dorsal recruits the CBP/p300 coactivator to the regulatory regions of defined target genes in the presumptive neuroectoderm, resulting in their histone acetylation and transcriptional activation. These genes are inactive in the mesoderm due to transcriptional quenching by the Snail repressor, which precludes recruitment of CBP and prevents histone acetylation. By contrast, inactivation of the same enhancers in the dorsal ectoderm is associated with Polycomb-repressed H3K27me3 chromatin. Thus, the Dorsal morphogen gradient produces three distinct histone signatures including two modes of transcriptional repression, active repression (hypoacetylation), and inactivity (H3K27me3). Whereas histone hypoacetylation is associated with a poised polymerase, H3K27me3 displaces polymerase from chromatin. Our results link different modes of RNA polymerase regulation to separate epigenetic patterns and demonstrate that developmental determinants orchestrate differential chromatin states, providing new insights into the link between epigenetics and developmental patterning.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
-
Mannervik, MattiasStockholms universitet,Institutionen för molekylär biovetenskap, Wenner-Grens institut(Swepub:su)maman
(author)
-
Stockholms universitetInstitutionen för molekylär biovetenskap, Wenner-Grens institut
(creator_code:org_t)
Related titles
-
In:Proceedings of the National Academy of Sciences of the United States of America: Proceedings of the National Academy of Sciences113:31, s. 8735-87400027-84241091-6490
Internet link
Find in a library
To the university's database