Related Experiment Video
Updated: May 20, 2026

Characterizing DNA Repair Processes at Transient and Long-lasting Double-strand DNA Breaks by Immunofluorescence Microscopy
Published on: June 8, 2018
The Fanconi anemia pathway in replication stress and DNA crosslink repair
Mathew J K Jones1, Tony T Huang
1Department of Biochemistry, New York University School of Medicine, 550 First Ave., MSB 399, New York, NY, 10016, USA.
Abstract:
Interstand crosslinks (ICLs) are DNA lesions where the bases of opposing DNA strands are covalently linked, inhibiting critical cellular processes such as transcription and replication. Chemical agents that generate ICLs cause chromosomal abnormalities including breaks, deletions and rearrangements, making them highly genotoxic compounds. This toxicity has proven useful for chemotherapeutic treatment against a wide variety of cancer types. The majority of our understanding of ICL repair in humans has been uncovered through analysis of the rare genetic disorder Fanconi anemia, in which patients are extremely sensitive to crosslinking agents. Here, we discuss recent insights into ICL repair gained using new repair assays and highlight the role of the Fanconi anemia repair pathway during replication stress.
Insights
Interstrand crosslinks (ICLs) are DNA damage that links DNA strands, halting cell processes. The Fanconi anemia pathway is crucial for repairing this damage, especially during replication stress.
Area of Science:
- Molecular Biology
- Genetics
- Cancer Research
Background:
- Interstrand crosslinks (ICLs) are DNA lesions covalently linking opposing DNA strands.
- ICLs inhibit essential cellular processes like transcription and replication, leading to genotoxicity.
- ICL-inducing agents are used in chemotherapy, and Fanconi anemia research has advanced understanding of ICL repair.
Purpose of the Study:
- To discuss recent advancements in understanding interstrand crosslink (ICL) repair.
- To highlight the significance of the Fanconi anemia repair pathway during replication stress.
Main Methods:
- Utilized novel repair assays to investigate ICL repair mechanisms.
- Analyzed the role of the Fanconi anemia pathway in response to replication stress.
Main Results:
- New insights into the mechanisms of ICL repair have been gained.
- The Fanconi anemia repair pathway plays a critical role during replication stress.
Conclusions:
- Understanding ICL repair is vital for cancer treatment and managing genotoxicity.
- The Fanconi anemia pathway is a key player in maintaining genomic stability when faced with replication stress.
Related Concept Videos
The DNA Replication Fork
The DNA Replication Fork
DNA Damage can Stall the Cell Cycle
DNA Damage Can Stall the Cell Cycle
Restarting Stalled Replication Forks
Homologous Recombination

