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Updated: Aug 27, 2025

Assessment of Global DNA Double-Strand End Resection using BrdU-DNA Labeling coupled with Cell Cycle Discrimination Imaging
Published on: April 28, 2021
DNA repair pathways as a novel therapeutic strategy in esophageal cancer: A review study
Mohammad Reza Kheyrandish1, Seyed Mostafa Mir2,3, Mehdi Sheikh Arabi1
1Medical Cellular and Molecular Research Center, Golestan University of Medical Sciences, Gorgan, Iran.
Abstract:
Esophageal cancer (EC) is a common malignancy with a poor prognosis worldwide. There are two core pathways that repair double-strand breaks, homologous recombination (HR) and non-homologous end joining (NHEJ) and numerous proteins are recognized that affect the occurrence of HR and NHEJ. Altered DNA damage response (DDR) pathways are associated with cancer susceptibility and affect therapeutic response and resistance in cancers. DDR pathway alterations in EC are still poorly understood. Therefore, the identification of alterations in specific genes in DDR pathways may potentially result in novel treatments for resistant cancers, especially EC. In this review, we aimed to focus on different aspects of DNA damage and repair processes in EC. Also, we reviewed new therapeutic strategies via targeting DNA repair machinery components.
Insights
Understanding DNA damage repair in esophageal cancer (EC) is crucial. This review explores DNA repair pathways and novel therapeutic strategies targeting these mechanisms for better EC treatment outcomes.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Esophageal cancer (EC) is a prevalent malignancy with a poor global prognosis.
- DNA damage response (DDR) pathways, including homologous recombination (HR) and non-homologous end joining (NHEJ), are critical for maintaining genomic stability.
- Altered DDR pathways are linked to cancer development, therapeutic resistance, and patient outcomes, yet remain poorly understood in EC.
Purpose of the Study:
- To review the current understanding of DNA damage and repair processes in esophageal cancer.
- To explore the role of DDR pathway alterations in EC susceptibility and treatment resistance.
- To discuss novel therapeutic strategies targeting DNA repair machinery components for EC.
Main Methods:
- Literature review of studies on DNA damage, repair pathways (HR, NHEJ), and DDR in esophageal cancer.
- Analysis of the association between DDR alterations and EC development, prognosis, and therapeutic response.
- Synthesis of information on emerging therapeutic strategies targeting DNA repair mechanisms in EC.
Main Results:
- DDR pathway alterations are implicated in EC, but their specific roles are not fully elucidated.
- Targeting DNA repair pathways presents a promising avenue for novel EC treatments.
- Understanding these mechanisms may lead to overcoming therapeutic resistance in EC.
Conclusions:
- Further research into DDR alterations in EC is warranted to identify specific gene targets.
- Targeting DNA repair machinery offers potential for developing innovative therapies for esophageal cancer.
- This review highlights the importance of DDR pathways in EC and their therapeutic potential.
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