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Updated: May 16, 2026
06:44
Assessment of Global DNA Double-Strand End Resection using BrdU-DNA Labeling coupled with Cell Cycle Discrimination Imaging
Published on: April 28, 2021
Overcoming the chromatin barrier to end resection
Huan Chen1, Lorraine S Symington
1Department of Microbiology & Immunology, Columbia University Medical Center, New York, NY 10032, USA.
Cell Research
|November 14, 2012
Summary
The chromatin remodeler Fun30 facilitates DNA end resection, a crucial step in repairing double-strand breaks via homologous recombination. This process involves the Exo1 and Sgs1-Dna2 pathways, advancing our understanding of DNA repair mechanisms.
Area of Science:
- Molecular Biology
- Genetics
- Biochemistry
Background:
- Homologous recombination repairs DNA double-strand breaks by processing DNA ends.
- Chromatin structure's role in DNA repair, specifically end resection, remains unclear.
- The Swi2/Snf2 family includes chromatin remodelers with diverse functions.
Purpose of the Study:
- To investigate the role of Fun30 in DNA double-strand break repair.
- To elucidate how chromatin remodelers influence DNA end resection pathways.
Main Methods:
- Investigated the function of Fun30 in DNA repair.
- Analyzed the interplay between Fun30, Exo1, and Sgs1-Dna2 in resection pathways.
Main Results:
- Fun30, a chromatin remodeler, is essential for efficient DNA end resection.
- Fun30 facilitates the Exo1 and Sgs1-Dna2 resection pathways during DNA repair.
- This highlights the importance of chromatin remodeling in DNA double-strand break repair.
Conclusions:
- Fun30 plays a critical role in facilitating DNA end resection by promoting the activity of Exo1 and Sgs1-Dna2.
- Understanding Fun30's function provides new insights into the chromatin-based regulation of DNA repair pathways.
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