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Updated: Aug 9, 2025
10:36
Chromatin Immunoprecipitation from Human Embryonic Stem Cells
Published on: July 22, 2008
21.0K
Comprehensive chromatin proteomics resolves functional phases of pluripotency and identifies changes in regulatory
Enes Ugur1,2, Alexandra de la Porte3, Weihua Qin1
1Faculty of Biology and Center for Molecular Biosystems (BioSysM), Human Biology and BioImaging, Ludwig-Maximilians-Universität München, Munich 81377, Germany.
Nucleic Acids Research
|February 22, 2023
Summary
Researchers mapped the cell
Area of Science:
- Molecular Biology
- Epigenetics
- Proteomics
Background:
- Cellular identity is established by the chromatin proteome, or chromatome.
- Understanding chromatome dynamics is key to deciphering gene regulation.
Purpose of the Study:
- To develop a novel proteomic method for analyzing chromatome composition and dynamics.
- To create a comprehensive atlas of proteomes and chromatin affinities across pluripotency phases.
Main Methods:
- Developed Chromatin Aggregation Capture (ChAC) with Data-Independent Acquisition (DIA) mass spectrometry.
- Analyzed chromatome reorganizations during ground, formative, and primed pluripotency states.
Main Results:
- Generated a detailed atlas of proteomes, chromatomes, and chromatin affinities.
- Identified phase-specific regulatory factors, including QSER1 and JADE1/2/3.
- Pinpointed specific binding and rearrangement of regulatory components during pluripotency transitions.
Conclusions:
- The ChAC-DIA method provides a powerful tool for chromatome analysis.
- Discovered key factors governing the phased progression of pluripotency.
- The methodology is applicable to diverse research models in development and disease.
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