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Updated: May 31, 2026

Structure-function Studies in Mouse Embryonic Stem Cells Using Recombinase-mediated Cassette Exchange
Published on: April 27, 2017
Tissue-specific gene targeting by the multiprotein mammalian DREAM complex.
Stephen Flowers1, George R Beck, Elizabeth Moran
1Department of Orthopaedics, New Jersey Medical School-University Hospital Cancer Center, University of Medicine and Dentistry, New Jersey, Newark, New Jersey 07103, USA.
The DREAM complex, including p130 and E2F4, typically represses genes in growth arrest. New research shows it also acts in proliferating cells, linking cell cycle control to tissue differentiation.
Area of Science:
- Cell Biology
- Gene Regulation
- Developmental Biology
Background:
- The DREAM complex (DP, RB-like, E2F, and MuvB-like proteins) is crucial for repressing cell cycle genes during growth arrest.
- This complex is conserved across species and regulates developmental genes, but was thought to function only in quiescent cells.
Purpose of the Study:
- To investigate the role of the DREAM complex in proliferating cells and its potential link to development.
- To understand the mechanism by which DREAM complex represses tissue-specific promoters.
Main Methods:
- Analysis of tissue-specific promoters.
- Investigating the role of DREAM complex components (p130, E2F4) in proliferating precursors.
- Assessing the dependency on the SWI/SNF chromatin-remodeling complex.
Main Results:
- The DREAM complex represses tissue-specific promoters in proliferating precursor cells, not just quiescent cells.
- This finding establishes a novel connection between the regulation of growth arrest and terminal differentiation.
- DREAM complex binding to these promoters requires an intact repressor form of the SWI/SNF chromatin-remodeling complex.
Conclusions:
- The DREAM complex has a broader role than previously understood, extending into proliferating cells.
- This complex links cell cycle control with developmental processes like terminal differentiation.
- The SWI/SNF chromatin-remodeling complex is essential for DREAM complex-mediated repression at specific promoters.
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