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Updated: May 8, 2026
07:55
Visualization of DNA Repair Proteins Interaction by Immunofluorescence
Published on: June 26, 2020
A backup DNA repair pathway moves to the forefront
André Nussenzweig1, Michel C Nussenzweig
1Experimental Immunology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA. andre_nussenzwweig@nih.gov
Cell
|October 25, 2007
Summary
Programmed DNA breaks during antigen receptor gene assembly can lead to chromosomal translocations. This alternative DNA end-joining pathway is implicated in lymphoid cancers, highlighting a novel mechanism in cancer development.
Area of Science:
- Molecular Biology
- Genetics
- Cancer Research
Background:
- Chromosomal translocations involving antigen receptor loci and oncogenes are characteristic of lymphoid cancers.
- The precise mechanisms underlying these translocations are a critical area of investigation in cancer biology.
Purpose of the Study:
- To investigate the role of programmed DNA breaks in antigen receptor gene assembly.
- To elucidate the DNA repair pathways involved in generating chromosomal translocations in lymphoid malignancies.
Main Methods:
- Analysis of DNA repair pathways.
- Studies on the V(D)J recombination process.
- Investigating the link between DNA breaks and translocation formation.
Main Results:
- Programmed DNA breaks generated during antigen receptor gene assembly can be rerouted.
- These breaks are channeled into an alternative DNA end-joining pathway.
- This pathway is directly implicated in the formation of chromosomal translocations observed in lymphoid cancers.
Conclusions:
- The V(D)J recombination process, while essential for immune diversity, can inadvertently lead to oncogenic translocations.
- Targeting this alternative DNA end-joining pathway presents a potential therapeutic strategy for lymphoid cancers.
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