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Updated: May 17, 2026

Visualizing and Quantifying Endonuclease-Based Site-Specific DNA Damage
Published on: August 21, 2021
The intersection between DNA damage response and cell death pathways
1Department of Radiation Oncology, Comprehensive Cancer Center, University of Alabama at Birmingham School of Medicine, USA.
Abstract:
Apoptosis is a finely regulated process that serves to determine the fate of cells in response to various stresses. One such stress is DNA damage, which not only can signal repair processes but is also intimately involved in regulating cell fate. In this review we examine the relationship between the DNA damage/repair response in cell survival and apoptosis following insults to the DNA. Elucidating these pathways and the crosstalk between them is of great importance, as they eventually contribute to the etiology of human disease such as cancer and may play key roles in determining therapeutic response. This article is part of a Special Issue entitled "Apoptosis: Four Decades Later".
Insights
DNA damage triggers cell fate decisions, influencing both survival and apoptosis. Understanding this interplay is crucial for disease research and therapeutic strategies.
Area of Science:
- Cell Biology
- Molecular Biology
- Genetics
Background:
- Apoptosis is a regulated cellular process crucial for development and tissue homeostasis.
- DNA damage is a significant cellular stress that can initiate repair or trigger programmed cell death.
- The intricate relationship between DNA damage response and apoptosis is fundamental to understanding cell fate.
Purpose of the Study:
- To review the complex interplay between DNA damage/repair pathways and apoptosis.
- To highlight the significance of these pathways in human diseases like cancer.
- To explore their role in predicting therapeutic responses.
Main Methods:
- Literature review of studies on DNA damage, repair, and apoptosis.
- Analysis of signaling pathways involved in cell survival and programmed cell death.
- Examination of the crosstalk between DNA damage response and apoptotic pathways.
Main Results:
- DNA damage elicits distinct cellular responses, including DNA repair and apoptosis.
- The balance between these responses dictates cell survival or death.
- Dysregulation of these pathways contributes to oncogenesis and impacts treatment efficacy.
Conclusions:
- Elucidating the crosstalk between DNA damage response and apoptosis is vital for understanding disease etiology.
- These pathways are critical determinants of cancer development and progression.
- Targeting these pathways holds potential for improving cancer therapy outcomes.
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