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Updated: Jul 9, 2026
Visualizing and Quantifying Endonuclease-Based Site-Specific DNA Damage
Published on: August 21, 2021
Radiation-induced EGFR-signaling and control of DNA-damage repair
H Peter Rodemann1, Klaus Dittmann, Mahmoud Toulany
1Division of Radiobiology & Molecular Environmental Research, Department of Radiation Oncology, Eberhard-Karls University Tuebingen, Germany. hans-peter.rodemann@uni-tuebingen.de
Purpose:
Over the last decade evidence has accumulated indicating that cell membrane-bound growth factor receptor of the erbB family and especially the epidermal growth factor receptor EGFR (erbB1) mediates resistance of tumor cells to both chemo- and radiotherapy when mutated or overexpressed. More recently a novel link between EGFR signaling pathways and DNA repair mechanisms, especially non-homologous end joining (NHEJ) repair could be demonstrated. The following review summarizes the current knowledge on the role of EGFR and its downstream signaling pathways in the regulation of cellular radiation response and DNA repair.
Conclusion:
The novel findings on radiation-induced EGFR-signaling and its involvement in regulating DNA-double strand break repair need further investigations of the detailed mechanisms involved. The results to be obtained may not only improve our knowledge on basic mechanisms of radiation sensitivity/resistance but also will promote translational approaches to test new strategies for clinically applicable molecular targeting.
Insights
Epidermal growth factor receptor (EGFR) signaling influences tumor cell resistance to cancer therapies by impacting DNA repair. Further research into EGFR's role in DNA double-strand break repair could lead to new targeted treatments.
Area of Science:
- Oncology
- Molecular Biology
- Radiation Oncology
Background:
- Epidermal growth factor receptor (EGFR) is implicated in tumor cell resistance to chemotherapy and radiotherapy.
- Mutations or overexpression of EGFR can enhance treatment resistance.
- Recent studies reveal a connection between EGFR signaling and DNA repair pathways.
Purpose of the Study:
- To review the current understanding of EGFR's role in cellular response to radiation.
- To summarize the involvement of EGFR signaling in DNA repair mechanisms.
- To explore the link between EGFR and radiation resistance.
Main Methods:
- Literature review of accumulated evidence on EGFR and cellular radiation response.
- Analysis of studies investigating EGFR signaling pathways.
- Examination of research on DNA repair mechanisms, particularly non-homologous end joining (NHEJ).
Main Results:
- EGFR signaling pathways are linked to DNA repair, specifically non-homologous end joining (NHEJ).
- EGFR plays a role in regulating the cellular response to radiation.
- EGFR activity influences tumor cell resistance to chemo- and radiotherapy.
Conclusions:
- Further investigation into radiation-induced EGFR signaling and its role in DNA double-strand break repair is warranted.
- Understanding these mechanisms can improve knowledge of radiation sensitivity and resistance.
- Findings may facilitate the development of novel molecular targeting strategies for clinical application.
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