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08:12
A Web-Based Workflow for Selecting Gene- and Tissue-Specific Enhancers
Published on: July 18, 2025
339
ecDNA party bus: Bringing the enhancer to you
Karen Adelman1, Benjamin J E Martin1
1Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, MA 02115, USA.
Molecular Cell
|May 7, 2021
Summary
Extrachromosomal DNA circles with enhancers act as mobile regulatory elements. These elements interact with oncogenes, boosting gene activity and driving cancer progression and tumor heterogeneity.
Area of Science:
- Molecular biology
- Cancer research
- Genetics
Background:
- Extrachromosomal DNA (ecDNA) is increasingly recognized in cancer.
- The regulatory role of ecDNA, particularly concerning enhancers, remains incompletely understood.
- Understanding ecDNA function is crucial for deciphering tumor heterogeneity and progression.
Purpose of the Study:
- To investigate the role of extrachromosomal DNA circles harboring enhancers in cancer.
- To determine how these mobile elements influence gene activity and tumor characteristics.
Main Methods:
- Analysis of extrachromosomal DNA circles in cancer cell models.
- Investigating the interaction between ecDNA-borne enhancers and chromosomal oncogenes.
- Assessing the impact on gene expression and tumor progression markers.
Main Results:
- Extrachromosomal DNA circles containing enhancers were identified as mobile regulatory elements.
- These ecDNA elements were shown to interact with chromosomal oncogenes.
- This interaction leads to elevated gene activity, contributing to cancer progression.
Conclusions:
- Extrachromosomal DNA circles with enhancers are key drivers of high-level oncogene activity.
- These mobile elements contribute significantly to tumor heterogeneity and the advancement of cancer.
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