Related Experiment Video
Updated: Sep 21, 2025

Heterotypic Three-dimensional In Vitro Modeling of Stromal-Epithelial Interactions During Ovarian Cancer Initiation and Progression
Published on: August 28, 2012
The Emerging Roles and Therapeutic Implications of Epigenetic Modifications in Ovarian Cancer
Yu Wang1, Zhao Huang1, Bowen Li1
1State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China.
Abstract:
Ovarian cancer (OC) is one of the most lethal gynecologic malignancies globally. In spite of positive responses to initial therapy, the overall survival rates of OC patients remain poor due to the development of drug resistance and consequent cancer recurrence. Indeed, intensive studies have been conducted to unravel the molecular mechanisms underlying OC therapeutic resistance. Besides, emerging evidence suggests a crucial role for epigenetic modifications, namely, DNA methylation, histone modifications, and non-coding RNA regulation, in the drug resistance of OC. These epigenetic modifications contribute to chemoresistance through various mechanisms, namely, upregulating the expression of multidrug resistance proteins (MRPs), remodeling of the tumor microenvironment, and deregulated immune response. Therefore, an in-depth understanding of the role of epigenetic mechanisms in clinical therapeutic resistance may improve the outcome of OC patients. In this review, we will discuss the epigenetic regulation of OC drug resistance and propose the potential clinical implications of epigenetic therapies to prevent or reverse OC drug resistance, which may inspire novel treatment options by targeting resistance mechanisms for drug-resistant OC patients.
Insights
Ovarian cancer (OC) drug resistance limits patient survival. Epigenetic modifications, including DNA methylation and non-coding RNAs, drive this resistance, suggesting epigenetic therapies could improve outcomes for OC patients.
Area of Science:
- Oncology
- Epigenetics
- Gynecologic Oncology
Background:
- Ovarian cancer (OC) is a leading cause of cancer death globally.
- Despite initial treatment success, poor survival rates persist due to drug resistance and recurrence.
- Molecular mechanisms of OC therapeutic resistance are under intensive investigation.
Purpose of the Study:
- To review the role of epigenetic modifications in OC drug resistance.
- To discuss how epigenetic changes contribute to chemoresistance.
- To explore the clinical implications of epigenetic therapies for drug-resistant OC.
Main Methods:
- Literature review focusing on epigenetic mechanisms in ovarian cancer.
- Analysis of studies investigating DNA methylation, histone modifications, and non-coding RNAs in OC drug resistance.
- Synthesis of evidence linking epigenetic alterations to chemoresistance pathways.
Main Results:
- Epigenetic modifications, including DNA methylation, histone modifications, and non-coding RNA dysregulation, are crucial in OC drug resistance.
- These epigenetic changes promote chemoresistance by upregulating multidrug resistance proteins, altering the tumor microenvironment, and affecting immune responses.
- Understanding these mechanisms is key to overcoming therapeutic resistance.
Conclusions:
- Epigenetic mechanisms play a significant role in the development of ovarian cancer drug resistance.
- Targeting epigenetic modifications offers a promising strategy to overcome chemoresistance and improve patient outcomes.
- Epigenetic therapies may provide novel treatment options for drug-resistant ovarian cancer.
More Related Videos
Related Concept Videos
Epigenetic Regulation
X-chromosome...
Mitogens and the Cell Cycle
Oogenesis
Cancer Therapies
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...

