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Updated: Aug 15, 2026

Preparation of Mitochondria from Ovarian Cancer Tissues and Control Ovarian Tissues for Quantitative Proteomics Analysis
Published on: November 18, 2019
Senescence-associated mitochondrial dysfunction as a therapeutic target in ovarian cancer: Challenges and
Hanieh Sadat Khalili1, Banafshe Abadi2, Nima Rezaei3
1Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Abstract:
Senescence-associated mitochondrial dysfunction (SAMD) links aging, metabolic reprogramming, and therapy resistance in ovarian cancer. Persistent damage to mitochondrial DNA (mtDNA), impaired mitochondrial quality control, and disrupted mitochondrial fusion and fission dynamics compromise electron transport (ET) and membrane potential, yielding chronic mitochondrial reactive oxygen species. This, in turn, drives a senescence-associated secretory phenotype, which includes proinflammatory cytokines, matrix proteases, and pro-angiogenic factors. This secretory phenotype alters the tumor microenvironment in ways that make the cells more resistant to cell death. In this review, we provide comprehensive insights from preclinical and translational clinical studies to map mechanistic connections and outline pragmatic measurement strategies. Our goal is to explore whether SAMD can move from being merely a descriptive hallmark to a measurable biomarker and a practical therapeutic target for restoring chemosensitivity.
Insights
Senescence-associated mitochondrial dysfunction (SAMD) drives ovarian cancer therapy resistance by altering the tumor microenvironment. Targeting SAMD may restore chemosensitivity and improve treatment outcomes.
Area of Science:
- Oncology
- Cellular Biology
- Aging Research
Background:
- Senescence-associated mitochondrial dysfunction (SAMD) is implicated in aging, metabolic changes, and therapy resistance in ovarian cancer.
- Mitochondrial damage (mtDNA), impaired quality control, and altered dynamics lead to reactive oxygen species (ROS) and a senescence-associated secretory phenotype (SASP).
- The SASP promotes a tumor microenvironment resistant to cell death, contributing to treatment failure.
Purpose of the Study:
- To review preclinical and clinical evidence linking SAMD to ovarian cancer progression and therapy resistance.
- To explore SAMD as a measurable biomarker for ovarian cancer.
- To investigate SAMD as a therapeutic target for enhancing chemosensitivity.
Main Methods:
- Comprehensive literature review of preclinical studies and translational clinical research.
- Analysis of mechanistic connections between mitochondrial dysfunction and cancer hallmarks.
- Evaluation of strategies for measuring SAMD in clinical settings.
Main Results:
- SAMD contributes to metabolic reprogramming and therapy resistance in ovarian cancer.
- Chronic mitochondrial ROS production drives a pro-tumorigenic SASP.
- The altered tumor microenvironment facilitates resistance to cell death.
Conclusions:
- SAMD is a critical factor in ovarian cancer progression and therapeutic resistance.
- Measuring SAMD could provide a valuable biomarker for patient stratification.
- Targeting SAMD presents a promising strategy for overcoming treatment resistance and restoring chemosensitivity.
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