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Published on: August 28, 2018
Epigenetic regulation of cancer-associated genes in ovarian cancer
Mi Jeong Kwon1, Young Kee Shin
1Advanced Institutes of Convergence Technology, Suwon, Kyeonggi-do 443-270, Korea;
Abstract:
The involvement of epigenetic aberrations in the development and progression of tumors is now well established. However, most studies have focused on the epigenetic inactivation of tumor suppressor genes during tumorigenesis and little is known about the epigenetic activation of cancer-associated genes, except for the DNA hypomethylation of some genes. Recently, we reported that the overexpression of cancer-promoting genes in ovarian cancer is associated with the loss of repressive histone modifications. This discovery suggested that epigenetic derepression may contribute to ovarian tumorigenesis by constituting a possible mechanism for the overexpression of oncogenes or cancer-promoting genes in tumors. The emerging importance of epigenetic aberrations in tumor initiation and in the regulation of cancer-initiating cells, suggests that epigenetically regulated genes may be promising therapeutic targets and biomarkers. Given that the current challenges in ovarian cancer include the identification of biomarkers for early cancer detection and the discovery of novel therapeutic targets for patients with recurrent malignancies undergoing chemotherapy, understanding the epigenetic changes that occur in ovarian cancer is crucial. This review looks at epigenetic mechanisms involved in the regulation of cancer-associated genes, including the contribution of epigenetic derepression to the activation of cancer-associated genes in ovarian cancer. In addition, possible epigenetic therapies targeting epigenetically dysregulated genes are discussed. A better understanding of the epigenetic changes in ovarian cancer will contribute to the improvement of patient outcomes.
Insights
Epigenetic changes, specifically derepression, drive ovarian cancer by activating cancer-promoting genes. Understanding these epigenetic mechanisms is key for developing new therapies and early detection biomarkers.
Area of Science:
- Oncology
- Epigenetics
- Molecular Biology
Background:
- Epigenetic aberrations are crucial in tumor development and progression.
- Most research focuses on epigenetic inactivation of tumor suppressor genes, with less known about epigenetic activation of cancer-associated genes.
- DNA hypomethylation is one known mechanism for epigenetic gene activation in cancer.
Purpose of the Study:
- To review epigenetic mechanisms regulating cancer-associated genes in ovarian cancer.
- To explore the role of epigenetic derepression in activating cancer-associated genes.
- To discuss potential epigenetic therapies for ovarian cancer.
Main Methods:
- Literature review of epigenetic mechanisms in ovarian cancer.
- Analysis of recent findings on histone modifications and gene expression.
- Discussion of therapeutic strategies targeting epigenetic dysregulation.
Main Results:
- Overexpression of cancer-promoting genes in ovarian cancer correlates with loss of repressive histone modifications.
- Epigenetic derepression is a potential mechanism for oncogene activation in ovarian tumors.
- Epigenetically regulated genes represent promising therapeutic targets and biomarkers for ovarian cancer.
Conclusions:
- Epigenetic derepression contributes to ovarian tumorigenesis by activating cancer-promoting genes.
- Understanding epigenetic changes is crucial for identifying early detection biomarkers and novel therapeutic targets.
- Targeting epigenetically dysregulated genes offers potential for improved ovarian cancer treatment and patient outcomes.
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