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Published on: August 28, 2018
Regulation of Metastasis by microRNAs in Ovarian Cancer
Yongchao Wang1, Sangmi Kim2, Il-Man Kim3
1Vascular Biology Center, Medical College of Georgia, Georgia Regents University , Augusta, GA , USA.
Abstract:
Ovarian cancer (OC) is the second most common and the most fatal gynecologic cancer in the United States. Over the last decade, various targeted therapeutics have been introduced but there has been no corresponding improvement in patient survival mainly because of the lack of effective early detection methods. microRNAs (miRs) are small, non-coding RNAs that regulate gene expression post-transcriptionally. Accumulating data suggest central regulatory roles of miRs in modulating OC initiation, progression, and metastasis. More recently, aberrant miR expression has been also associated with cancer stem cell (CSC) phenotypes and development of CSC chemo-resistance. Here, we review recent advances on miRs and OC metastasis and discuss the concept that miRs are involved in both CSC transformation and subsequent OC metastasis. Finally, we describe the prevalence of circulating miRs and assess their potential utilities as biomarkers for OC diagnosis, prognosis, and therapeutics.
Insights
microRNAs (miRs) play a key role in ovarian cancer (OC) metastasis and cancer stem cell (CSC) development. Circulating miRs show promise as biomarkers for early OC detection, prognosis, and targeted therapies.
Area of Science:
- Gynecologic Oncology
- Molecular Biology
- Biomarker Discovery
Background:
- Ovarian cancer (OC) remains a leading cause of cancer death in the US due to limited early detection.
- Despite advances in targeted therapies, patient survival has not significantly improved.
- MicroRNAs (miRs) are implicated in OC initiation, progression, and metastasis.
Purpose of the Study:
- To review recent advances in the role of miRs in OC metastasis.
- To discuss the involvement of miRs in cancer stem cell (CSC) transformation and chemo-resistance.
- To assess the potential of circulating miRs as biomarkers for OC.
Main Methods:
- Literature review of recent studies on miRs and OC metastasis.
- Analysis of the role of miRs in CSC phenotypes and chemo-resistance.
- Evaluation of circulating miRs for diagnostic and prognostic utility.
Main Results:
- miRs are central regulators of OC initiation, progression, and metastasis.
- Aberrant miR expression is linked to CSC phenotypes and chemo-resistance.
- Circulating miRs are prevalent and hold potential as OC biomarkers.
Conclusions:
- miRs are critically involved in both CSC transformation and OC metastasis.
- miRs represent promising targets for novel OC therapeutics.
- Circulating miRs offer potential for early OC diagnosis, prognosis, and treatment monitoring.
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