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Updated: Jul 13, 2026
08:48
Generating De Novo Antigen-specific Human T Cell Receptors by Retroviral Transduction of Centric Hemichain
Published on: October 25, 2016
Antigen receptor diversification and chromosome translocations
Mila Jankovic1, André Nussenzweig, Michel C Nussenzweig
1Laboratory of Molecular Immunology, The Rockefeller University, New York, New York 10021-6399, USA.
Nature Immunology
|July 21, 2007
Summary
Genomic instability arises from unrepaired DNA damage, particularly double-stranded DNA breaks (DSBs). Impaired DNA repair or checkpoints in lymphocytes can lead to genetic instability and cancer.
Area of Science:
- Molecular Biology
- Genetics
- Cancer Research
Background:
- Double-stranded DNA breaks (DSBs) are critical DNA lesions.
- DSBs can cause chromosomal abnormalities like deletions and translocations.
- These abnormalities promote neoplastic transformation and cancer development.
Purpose of the Study:
- To review the mechanisms of DNA repair and damage checkpoints.
- To explore how impaired DNA repair or checkpoints lead to genetic instability.
- To understand the predisposition of lymphocytes to malignant transformation due to antigen receptor gene diversification.
Main Methods:
- Literature review of DNA repair pathways.
- Analysis of DNA-damage checkpoint functions.
- Examination of genetic instability in lymphocytes.
Main Results:
- Cellular pathways recognize and repair DSBs to maintain genomic integrity.
- DNA-damage checkpoints ensure proper repair or elimination of damaged cells.
- Impaired repair or checkpoints result in genetic instability.
Conclusions:
- Defects in DNA repair or checkpoints predispose cells to cancer.
- Lymphocytes undergoing antigen receptor gene diversification are particularly vulnerable.
- Maintaining genomic integrity is crucial for preventing malignant transformation.
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