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Updated: Jan 16, 2026
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Chromatin Immunoprecipitation Assay for Tissue-specific Genes using Early-stage Mouse Embryos
Published on: April 29, 2011
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Remodelling bivalent chromatin is essential for mouse peri-implantation embryogenesis
Yanhe Li1, Jincan He2, Yingdong Liu1
1Shanghai Key Laboratory of Maternal Fetal Medicine, Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Shanghai Institute of Maternal-Fetal Medicine and Gynecologic Oncology, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, China.
Nature Cell Biology
|October 1, 2025
Summary
Bivalent chromatin regulation is key for early development. Researchers identified ZBTB17 as essential for resolving these domains, controlling pluripotency and lineage commitment in mammals.
Area of Science:
- Developmental Biology
- Epigenetics
- Chromatin Biology
Background:
- Bivalency plays a crucial role in regulating developmental genes during lineage commitment.
- Mechanisms of bivalent domain establishment, maintenance, and resolution in early embryogenesis are not fully understood.
Purpose of the Study:
- To comprehensively trace bivalent chromatin remodeling throughout mouse peri-implantation development.
- To identify key regulators of transiently maintained bivalent domains (TB domains) and their role in lineage commitment.
Main Methods:
- Comprehensive tracing of bivalent chromatin remodeling in mouse embryos.
- Targeted genetic screening in embryos to identify TB domain regulators.
- Investigating the mechanistic role of ZBTB17 in bivalency resolution using genetic ablation and degradation.
Main Results:
- Identified bifurcated modes of bivalent domain establishment partitioning epiblast and primitive endoderm regulatory programs.
- Discovered transiently maintained bivalent domains (TB domains) in the epiblast, crucial for pluripotency progression.
- Uncovered 22 TB domain regulators, including ZBTB17, essential for peri-implantation development. ZBTB17 resolves bivalency by removing H3K27me3, priming pluripotency gene activation.
Conclusions:
- Bivalent chromatin regulation provides a framework for early mammalian development and precise control of lineage commitment.
- ZBTB17 is an essential factor for resolving bivalency and ensuring proper developmental progression.
- TB domain dynamics and ZBTB17's role are evolutionarily conserved in human pluripotent transitions.
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