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Updated: Jun 29, 2025

Visualizing DNA Damage Repair Proteins in Patient-Derived Ovarian Cancer Organoids via Immunofluorescence Assays
Published on: February 24, 2023
Therapeutic Options Targeting the Ataxia-Telangiectasia Mutated (ATM)-mediated DNA Damage Response, Macropinocytosis,
Cai-Chieh Tseng1, Min-Hsi Ku1, Yun-Chieh Wu1
1Department of Life Science, College of Science and Engineering, National Dong Hwa University, Hualien, Taiwan, R.O.C.
Abstract:
Ataxia-telangiectasia mutated (ATM) is a pivotal protein with versatile kinase activity that responds to DNA damage. While its well-established role as a DNA repair protein is widely recognized, the understanding of its noncanonical functions in ovarian cancer remains limited. Numerous studies have investigated the potential of targeting ATM for ovarian cancer treatment. In addition to its involvement in homologous recombination repair (HRR), an increasing body of research suggests that ATM plays a role in cellular metabolism and adaptive immunity. This review focuses on the current evidence and provides a perspective on how targeting ATM in ovarian cancer can address HRR-deficient genotypes, influence macropinocytosis, and enhance immune checkpoint blockade (ICB) therapy. It underscores the diverse avenues through which targeting ATM is a potential tailored treatment for ovarian cancer.
Insights
Targeting the ATM protein in ovarian cancer offers new treatment strategies. This approach can address DNA repair deficiencies, impact cellular processes, and improve immunotherapy effectiveness.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Genetics
Background:
- Ataxia-telangiectasia mutated (ATM) is a key protein kinase involved in DNA damage response.
- ATM's role in DNA repair is established, but its noncanonical functions in ovarian cancer are less understood.
- ATM is a potential therapeutic target for ovarian cancer.
Purpose of the Study:
- To review the current evidence on targeting ATM in ovarian cancer.
- To explore ATM's roles beyond DNA repair, including metabolism and immunity.
- To provide a perspective on ATM-targeted therapies for ovarian cancer.
Main Methods:
- Literature review of studies on ATM in ovarian cancer.
- Analysis of ATM's involvement in homologous recombination repair (HRR).
- Examination of ATM's influence on macropinocytosis and adaptive immunity.
Main Results:
- ATM plays a role in HRR-deficient ovarian cancer genotypes.
- ATM influences cellular metabolism, specifically macropinocytosis.
- Targeting ATM may enhance the efficacy of immune checkpoint blockade (ICB) therapy.
Conclusions:
- Targeting ATM presents a multifaceted strategy for ovarian cancer treatment.
- ATM-targeted therapies can address HRR deficiency and modulate the tumor microenvironment.
- ATM offers potential for tailored treatment approaches in ovarian cancer.
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