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Published on: April 28, 2021
DNA Repair Pathways in Cancer Therapy and Resistance
Lan-Ya Li1,2, Yi-di Guan1, Xi-Sha Chen1
1Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha, China.
Abstract:
DNA repair pathways are triggered to maintain genetic stability and integrity when mammalian cells are exposed to endogenous or exogenous DNA-damaging agents. The deregulation of DNA repair pathways is associated with the initiation and progression of cancer. As the primary anti-cancer therapies, ionizing radiation and chemotherapeutic agents induce cell death by directly or indirectly causing DNA damage, dysregulation of the DNA damage response may contribute to hypersensitivity or resistance of cancer cells to genotoxic agents and targeting DNA repair pathway can increase the tumor sensitivity to cancer therapies. Therefore, targeting DNA repair pathways may be a potential therapeutic approach for cancer treatment. A better understanding of the biology and the regulatory mechanisms of DNA repair pathways has the potential to facilitate the development of inhibitors of nuclear and mitochondria DNA repair pathways for enhancing anticancer effect of DNA damage-based therapy.
Insights
DNA repair is crucial for genetic stability. Targeting DNA repair pathways offers a promising strategy to enhance cancer treatment efficacy by increasing tumor sensitivity to therapies.
Area of Science:
- Molecular Biology
- Genetics
- Cancer Research
Background:
- DNA repair pathways maintain genetic stability against damaging agents.
- Deregulation of DNA repair is linked to cancer initiation and progression.
- Cancer therapies like radiation and chemotherapy induce DNA damage.
Purpose of the Study:
- To explore the role of DNA repair in cancer.
- To investigate targeting DNA repair pathways as a therapeutic strategy.
- To understand mechanisms for enhancing anti-cancer therapy effects.
Main Methods:
- Review of DNA repair pathways.
- Analysis of DNA damage response in cancer cells.
- Exploration of therapeutic targeting strategies.
Main Results:
- Dysregulation of DNA repair influences cancer cell sensitivity to genotoxic agents.
- Targeting DNA repair can potentiate the efficacy of cancer therapies.
- Understanding repair mechanisms is key to developing novel inhibitors.
Conclusions:
- Targeting DNA repair pathways presents a viable therapeutic approach for cancer treatment.
- Inhibitors of nuclear and mitochondrial DNA repair can enhance DNA damage-based therapies.
- Further research into DNA repair biology is essential for advancing cancer treatment.
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