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Updated: May 17, 2026
12:02
Studying Cell Cycle-regulated Gene Expression by Two Complementary Cell Synchronization Protocols
Published on: June 6, 2017
Coordinated repression of cell cycle genes by KDM5A and E2F4 during differentiation
Michael L Beshiri1, Katherine B Holmes, William F Richter
1Department of Biochemistry and Molecular Genetics, University of Illinois, Chicago, IL 60607, USA.
Summary
Lysine (K)-specific demethylase 5A (KDM5A) removal of activating epigenetic marks helps control cell differentiation. KDM5A works with RB family repressors to silence genes during cell development.
Area of Science:
- Epigenetics
- Molecular Biology
- Developmental Biology
Background:
- Epigenetic regulation drives gene expression changes crucial for development.
- The precise roles of epigenetic enzymes in differentiation remain largely unknown.
Purpose of the Study:
- To investigate the role of lysine (K)-specific demethylase 5A (KDM5A) in cellular differentiation.
- To elucidate the mechanism by which KDM5A interacts with transcriptional repressors.
Main Methods:
- Global location analysis to identify KDM5A and E2F4 co-occupancy.
- KDM5A knockout experiments in ES cells during differentiation.
- Analysis of protein binding at target gene loci in differentiated cells.
Main Results:
- KDM5A knockout led to derepression of its target genes during ES cell differentiation.
- KDM5A co-occupies many target genes with the E2F4 transcription factor.
- KDM5A cooperates with E2F4 and p130 to repress cell cycle genes during differentiation.
Conclusions:
- KDM5A plays a critical role in reinforcing transcriptional repression by RB family members.
- H3K4 demethylation by KDM5A is essential for silencing specific genes during differentiation.
- KDM5A is a key epigenetic regulator in the process of cell differentiation.
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