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An Integrated Platform for Genome-wide Mapping of Chromatin States Using High-throughput ChIP-sequencing in Tumor Tissues
Published on: April 5, 2018
Characterization of human epigenomes
Zhibin Wang1, Dustin E Schones, Keji Zhao
1Laboratory of Molecular Immunology, National Heart, Lung, and Blood Institute, NIH, Bethesda, MD 20892, USA.
Current Opinion in Genetics & Development
|March 21, 2009
Summary
Histone modifications regulate gene activity and cellular development. Mapping these epigenetic marks using ChIP-Sequencing reveals a core set of modifications linked to active transcription, aiding disease research.
Area of Science:
- Epigenetics and Genomics
- Molecular Biology
- Cellular Development
Background:
- Histone modifications are crucial regulators of gene transcription, impacting cellular development and differentiation.
- Understanding the role of histone modifications in normal development and disease requires comprehensive mapping of these marks and their associated enzymes.
- Existing knowledge gaps hinder a full grasp of epigenomic regulation in health and pathology.
Purpose of the Study:
- To establish a global catalog of histone modifications and modifying enzymes in normal and disease states.
- To investigate the influence of histone modifications on normal cellular development and disease pathogenesis.
- To leverage new epigenomic datasets for a deeper understanding of transcriptional regulation.
Main Methods:
- Utilized the ChIP-Sequencing (Chromatin Immunoprecipitation Sequencing) technique for systematic mapping of histone modifications.
- Generated and analyzed human epigenomic datasets.
- Focused on identifying combinatorial patterns of histone modifications.
Main Results:
- The first systematic mapping experiments revealed a combinatorial 'backbone' of histone modifications associated with active transcription.
- Identified multiple histone modifications that collectively mark actively transcribed regions.
- Demonstrated the power of ChIP-Sequencing for large-scale epigenomic analysis.
Conclusions:
- The combinatorial histone modification backbone is a key feature of active transcription.
- Human epigenomic datasets are invaluable resources for understanding transcriptional regulation.
- This work provides a foundation for studying cellular development, differentiation, and pathological conditions through an epigenomic lens.
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01:46Epigenetic Regulation
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Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.