Open Close
Reference
Citation
Li, L., Lyu, X., Hou, C., Takenaka, N., Nguyen, H.Q., Ong, C.T., CubeƱas-Potts, C., Hu, M., Lei, E.P., Bosco, G., Qin, Z.S., Corces, V.G. (2015). Widespread Rearrangement of 3D Chromatin Organization Underlies Polycomb-Mediated Stress-Induced Silencing.  Mol. Cell 58(2): 216--231.
FlyBase ID
FBrf0228141
Publication Type
Research paper
Abstract

Chromosomes of metazoan organisms are partitioned in the interphase nucleus into discrete topologically associating domains (TADs). Borders between TADs are formed in regions containing active genes and clusters of architectural protein binding sites. The transcription of most genes is repressed after temperature stress in Drosophila. Here we show that temperature stress induces relocalization of architectural proteins from TAD borders to inside TADs, and this is accompanied by a dramatic rearrangement in the 3D organization of the nucleus. TAD border strength declines, allowing for an increase in long-distance inter-TAD interactions. Similar but quantitatively weaker effects are observed upon inhibition of transcription or depletion of individual architectural proteins. Heat shock-induced inter-TAD interactions result in increased contacts among enhancers and promoters of silenced genes, which recruit Pc and form Pc bodies in the nucleolus. These results suggest that the TAD organization of metazoan genomes is plastic and can be reconfigured quickly.

Graphical Abstract
Obtained with permission from Cell Press.
PubMed ID
PubMed Central ID
PMC4402144 (PMC) (EuropePMC)
Associated Information
Comments
Associated Files
Other Information
Secondary IDs
    Language of Publication
    English
    Additional Languages of Abstract
    Parent Publication
    Publication Type
    Journal
    Abbreviation
    Mol. Cell
    Title
    Molecular Cell
    Publication Year
    1997-
    ISBN/ISSN
    1097-2765 1097-4164
    Data From Reference
    Genes (14)
    Cell Lines (1)