Journal
BIOESSAYS
Volume 41, Issue 3, Pages -Publisher
WILEY
DOI: 10.1002/bies.201800222
Keywords
3D genome; chromatin; Polycomb
Categories
Funding
- CNRS, the University of Montpellier
- European Research Council [232947]
- FP7 European Network of Excellence EpiGeneSys
- European Union [676556]
- Agence Nationale de la Recherche [ANR-15-CE12-006-01]
- Fondation pour la Recherche Medicale [DEI20151234396]
- French National Cancer Institute (INCa) [PLBIO16-222]
- Laboratory of Excellence EpiGenMed [ANR-10-LABX-12]
- Fondation ARC pour la Recherche contre le Cancer
- Laboratory of Excellence EpiGenMed
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Targeted transitions in chromatin states at thousands of genes are essential drivers of eukaryotic development. Therefore, understanding the in vivo dynamics of epigenetic regulators is crucial for deciphering the mechanisms underpinning cell fate decisions. This review illustrates how, in addition to its cell memory function, the Polycomb group of transcriptional regulators orchestrates temporal, cell and tissue-specific expression of master genes during development. These highly sophisticated developmental transitions are dependent on the context- and tissue-specific assembly of the different types of Polycomb Group (PcG) complexes, which regulates their targeting and/or activities on chromatin. Here, an overview is provided of how PcG complexes function at multiple scales to regulate transcription, local chromatin environment, and higher order structures that support normal differentiation and are perturbed in tumorigenesis.
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