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The Role of microRNAs in Epithelial Ovarian Cancer Metastasis
Vu Hong Loan Nguyen1, Chenyang Yue1, Kevin Y Du1
1Department of Biology, York University, Toronto, ON M3J 1P3, Canada.
Abstract:
Epithelial ovarian cancer (EOC) is the deadliest gynecological cancer, and the major cause of death is mainly attributed to metastasis. MicroRNAs (miRNAs) are a group of small non-coding RNAs that exert important regulatory functions in many biological processes through their effects on regulating gene expression. In most cases, miRNAs interact with the 3' UTRs of target mRNAs to induce their degradation and suppress their translation. Aberrant expression of miRNAs has been detected in EOC tumors and/or the biological fluids of EOC patients. Such dysregulation occurs as the result of alterations in DNA copy numbers, epigenetic regulation, and miRNA biogenesis. Many studies have demonstrated that miRNAs can promote or suppress events related to EOC metastasis, such as cell migration, invasion, epithelial-to-mesenchymal transition, and interaction with the tumor microenvironment. In this review, we provide a brief overview of miRNA biogenesis and highlight some key events and regulations related to EOC metastasis. We summarize current knowledge on how miRNAs are dysregulated, focusing on those that have been reported to regulate metastasis. Furthermore, we discuss the role of miRNAs in promoting and inhibiting EOC metastasis. Finally, we point out some limitations of current findings and suggest future research directions in the field.
Insights
MicroRNAs (miRNAs) are key regulators of epithelial ovarian cancer (EOC) metastasis. Dysregulated miRNAs can promote or inhibit EOC spread, highlighting their potential as therapeutic targets.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Epithelial ovarian cancer (EOC) is the deadliest gynecological cancer, with metastasis being the primary cause of mortality.
- MicroRNAs (miRNAs) are small non-coding RNAs regulating gene expression, crucial in various biological processes.
- Aberrant miRNA expression is observed in EOC and linked to disease progression and metastasis.
Purpose of the Study:
- To review miRNA biogenesis and its role in EOC metastasis.
- To summarize current knowledge on miRNA dysregulation in EOC.
- To discuss the dual role of miRNAs in promoting and inhibiting EOC metastasis.
Main Methods:
- Literature review of studies on miRNA biogenesis and function in EOC.
- Analysis of miRNA dysregulation mechanisms (copy number, epigenetics, biogenesis).
- Synthesis of findings on miRNA-mediated regulation of metastasis-related events.
Main Results:
- miRNAs regulate key metastatic processes including cell migration, invasion, and epithelial-to-mesenchymal transition.
- Dysregulation of specific miRNAs is associated with EOC progression.
- miRNAs can act as either tumor suppressors or oncogenes in EOC metastasis.
Conclusions:
- miRNAs play a significant role in EOC metastasis, with dysregulation contributing to poor outcomes.
- Understanding miRNA roles offers potential for novel diagnostic and therapeutic strategies in EOC.
- Further research is needed to fully elucidate miRNA functions and therapeutic potential in EOC metastasis.
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