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Updated: Feb 9, 2026

Analysis of DNA Double-strand Break DSB Repair in Mammalian Cells
Published on: September 8, 2010
Introduction to the Thematic Minireview Series: DNA double-strand break repair and pathway choice
1From the Department of Molecular Biophysics and Biochemistry, Yale University School of Medicine, New Haven, Connecticut 06520 patrick.sung@yale.edu.
Abstract:
Environmental agents and reactive metabolites induce myriad chromosomal lesions that challenge the integrity of our genome. In particular, the DNA double-strand break (DSB) has the highest potential to cause the types of chromosome aberrations and rearrangements found in transformed and cancer cells. Several conserved pathways of DSB repair exist in eukaryotes, and these have been the subject of intense studies in recent years. In this Thematic Minireview Series, four leading research groups review recent progress in deciphering DSB repair mechanisms and the intricate regulatory network that helps determine the preferential engagement of one pathway over others.
Insights
DNA double-strand breaks (DSBs) are critical DNA lesions that can lead to cancer. This review series explores the conserved eukaryotic pathways for DSB repair and their regulation.
Area of Science:
- Genetics and Molecular Biology
- Cellular Biology
- Genomic Stability
Background:
- Environmental factors and metabolites generate DNA lesions, threatening genome integrity.
- DNA double-strand breaks (DSBs) are particularly significant, often leading to cancer-associated chromosome aberrations.
- Understanding DSB repair is crucial for comprehending cancer development.
Purpose of the Study:
- To review recent advancements in understanding DNA double-strand break repair mechanisms.
- To explore the regulatory networks governing the choice of DSB repair pathways.
- To provide insights into the intricate processes maintaining genomic integrity.
Main Methods:
- This is a Thematic Minireview Series.
- Expert research groups summarize current knowledge.
- Focus on deciphering DSB repair mechanisms and regulation.
Main Results:
- Multiple conserved eukaryotic pathways exist for DSB repair.
- Intricate regulatory networks determine pathway preference.
- Recent progress has significantly advanced our understanding of these processes.
Conclusions:
- DSB repair pathways and their regulation are key to maintaining genomic stability.
- Continued research is vital for deciphering these complex mechanisms.
- Insights gained have implications for understanding and treating cancer.
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