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Independence of chromatin conformation and gene regulation during Drosophila dorsoventral patterning
- Ing-Simmons, Elizabeth (author)
-
- Vaid, Roshan (author)
- Stockholms universitet,Institutionen för molekylär biovetenskap, Wenner-Grens institut
- Yang Bing, Xin (author)
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- Levine, Michael (author)
- Vaquerizas, Juan M. (author)
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- (creator_code:org_t)
- 2021-04-01
- 2021
- English.
- In: Nature Genetics. - : Springer Science and Business Media LLC. - 1061-4036 .- 1546-1718. ; 53, s. 487-499
- Journal article (peer-reviewed)
Abstract
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- Chromatin conformation is largely independent of dorsoventral gene expression during early embryonic development in Drosophila. Despite tissue-specific differences in chromatin state and gene expression, three-dimensional chromatin organization is maintained across tissues. The relationship between chromatin organization and gene regulation remains unclear. While disruption of chromatin domains and domain boundaries can lead to misexpression of developmental genes, acute depletion of regulators of genome organization has a relatively small effect on gene expression. It is therefore uncertain whether gene expression and chromatin state drive chromatin organization or whether changes in chromatin organization facilitate cell-type-specific activation of gene expression. Here, using the dorsoventral patterning of the Drosophila melanogaster embryo as a model system, we provide evidence for the independence of chromatin organization and dorsoventral gene expression. We define tissue-specific enhancers and link them to expression patterns using single-cell RNA-seq. Surprisingly, despite tissue-specific chromatin states and gene expression, chromatin organization is largely maintained across tissues. Our results indicate that tissue-specific chromatin conformation is not necessary for tissue-specific gene expression but rather acts as a scaffold facilitating gene expression when enhancers become active.
Subject headings
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
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- art (subject category)
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