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Updated: Jan 19, 2026

Profiling of Estrogen-regulated MicroRNAs in Breast Cancer Cells
Published on: February 21, 2014
MicroRNA-204-5p Inhibits Ovarian Cancer Cell Proliferation by Down-Regulating USP47
Liangliang Hu1, Helena Kolibaba2, Siyou Zhang3
1Medical faculty of Hubei Polytechnic Institute, Xiaogan, Hubei, China.
Abstract:
Ovarian cancer (OC) is the most lethal gynecologic cancer, and the incidence of OC has risen steadily worldwide. Numerous microRNAs (miRNAs) have been found to be involved in the progression of OC. miR-204-5p is down-regulated and functions as a tumor suppressor in various types of human malignant tumors. However, the biological roles and molecular mechanisms of miR-204-5p in OC still remain unclear. In this study, the aberrant down-regulation of miR-204-5p was detected in OC tissues. We also observed that miR-204-5p overexpression represses OC cell proliferation. Ubiquitin-specific peptidase 47 (USP47) is verified as the functional target of miR-204-5p, through which it plays an important biological role in OC. Our results uncover new functions and mechanisms for miR-204-5p in the progression of OC, and provide a potential therapeutic target for the treatment of OC.
Insights
MicroRNA-204-5p (miR-204-5p) acts as a tumor suppressor in ovarian cancer (OC) by inhibiting cell proliferation. Its down-regulation in OC tissues suggests it could be a therapeutic target.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Ovarian cancer (OC) is a leading cause of cancer-related death in women globally.
- MicroRNAs (miRNAs) play critical roles in cancer development, with miR-204-5p known as a tumor suppressor in other cancers.
- The specific functions and mechanisms of miR-204-5p in ovarian cancer remain largely unknown.
Purpose of the Study:
- To investigate the role and molecular mechanisms of miR-204-5p in ovarian cancer progression.
- To determine if miR-204-5p functions as a tumor suppressor in OC.
- To identify potential therapeutic targets for OC treatment.
Main Methods:
- Analysis of miR-204-5p expression levels in OC tissues.
- Overexpression of miR-204-5p in OC cell lines to assess its effect on proliferation.
- Identification and validation of the functional target of miR-204-5p in OC.
Main Results:
- miR-204-5p was found to be significantly down-regulated in OC tissues.
- Overexpression of miR-204-5p suppressed OC cell proliferation.
- Ubiquitin-specific peptidase 47 (USP47) was identified as a direct functional target of miR-204-5p in OC.
Conclusions:
- miR-204-5p exhibits tumor-suppressive functions in ovarian cancer by inhibiting cell proliferation.
- USP47 is a key mediator of miR-204-5p's biological role in OC.
- miR-204-5p represents a potential novel therapeutic target for ovarian cancer treatment.
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