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Updated: Jul 3, 2025
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Identification of MyoD Interactome Using Tandem Affinity Purification Coupled to Mass Spectrometry
Published on: May 17, 2016
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Matrin3 mediates differentiation through stabilizing chromatin loop-domain interactions and YY1 mediated
Tianxin Liu1, Qian Zhu1,2, Yan Kai1
1Dana-Farber/Boston Children's Cancer and Blood Disorders Center, Harvard Stem Cell Institute, Harvard Medical School, Boston, MA, 02115, USA.
Nature Communications
|February 10, 2024
Summary
Matrin3 (Matr3) protein is crucial for maintaining cell structure and development. Its depletion causes rapid changes in chromosome organization and gene regulation during muscle development.
Area of Science:
- Molecular Biology
- Genetics
- Developmental Biology
Background:
- Nuclear proteins influence chromatin structure and cell differentiation.
- Mechanisms linking nuclear proteins to chromatin dynamics are not fully understood.
Purpose of the Study:
- Investigate the role of Matrin3 (Matr3) in chromatin architecture and myogenesis.
- Elucidate the direct impact of Matr3 on developmental chromatin reorganization.
Main Methods:
- Utilized a targeted protein degradation system (dTAG-Matr3) for acute Matr3 depletion.
- Performed high-throughput chromosome conformation capture (Hi-C) to analyze chromatin rearrangements.
- Assessed changes in transcription factor binding (YY1), histone modifications, and chromatin occupancy.
Main Results:
- Matr3 depletion led to rapid and substantial chromatin loop rearrangements.
- Observed emergence of YY1-mediated enhancer-promoter loops.
- Correlated Matr3 occupancy changes with altered histone modifications and chromatin binding patterns.
Conclusions:
- Matrin3 stabilizes chromatin accessibility and loop-domain interactions, mediating differentiation.
- Matr3 plays a conserved and direct role in maintaining chromosomal architecture during development.
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