Related Experiment Video
Updated: Dec 11, 2025
Author Spotlight: Unveiling the Role of TMOD3 in Platinum Resistance and Immune Infiltration in Ovarian Cancer
Published on: August 2, 2024
miR-197-3p reduces epithelial-mesenchymal transition by targeting ABCA7 in ovarian cancer cells
Weiquan Xie1, Chengyu Shui1, Xiping Fang2
1Department of Obstetrics and Gynaecology, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi, 445000 Hubei China.
Abstract:
The present study was designed to explore the role of microRNA-197-3p in regulating the epithelial-mesenchymal cellular transition in ovarian cancer. The results showed that miR-197 to be significantly (P < 0.05) downregulated in human ovarian cancer tissues and cell lines. Overexpression of miR-197 significantly (P < 0.05) reduced the proliferation of OVACAR-3 cancer cells. Additionally, the colony formation of the OVACAR-3 cells was inhibited by 59% relative to control. The migration and invasion of the OVACAR-3 cells was inhibited by 64% and 72%, respectively, upon miR-197 overexpression. Western blot analysis showed miR-197 was found to upregulate the expression of E-cadherin, while the expression of N-cadherin, vimentin, and snail proteins was found to decrease significantly (P < 0.05). TargetScan analysis together with dual luciferase assay revealed that miR-197 exerts its effects by targeting ABCA7 in ovarian cancer. ABCA7 was significantly (P < 0.05) overexpressed in ovarian cancer tissues and cell lines. However, silencing of ABCA7 resulted in significant inhibition of cell proliferation, migration, and invasion. Nonetheless, overexpression of ABCA7 could abolish the tumor-suppressive effects of miR-197 on the OVACAR-3 cells. Taken together, miR-197 acts a tumor-suppressive in ovarian cancer and points towards its therapeutic implications in the treatment of ovarian cancer.
Insights
MicroRNA-197-3p (miR-197) is downregulated in ovarian cancer, suppressing tumor growth and metastasis. Restoring miR-197 levels inhibits cancer cell proliferation, migration, and invasion, highlighting its therapeutic potential.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Ovarian cancer is a leading cause of cancer-related deaths in women.
- Epithelial-mesenchymal transition (EMT) is a key process in ovarian cancer progression and metastasis.
- MicroRNAs (miRNAs) play crucial roles in regulating gene expression and cellular processes, including EMT.
Purpose of the Study:
- To investigate the role of microRNA-197-3p (miR-197) in regulating epithelial-mesenchymal transition (EMT) in ovarian cancer.
- To determine the therapeutic potential of miR-197 in ovarian cancer treatment.
Main Methods:
- Quantitative real-time PCR to measure miR-197 expression in ovarian cancer tissues and cell lines.
- Overexpression and silencing of miR-197 and ABCA7 in OVACAR-3 cells.
- Cell proliferation, colony formation, migration, and invasion assays.
- Western blot analysis to assess protein expression (E-cadherin, N-cadherin, vimentin, snail).
- TargetScan analysis and dual luciferase reporter assay to identify miR-197 targets.
Main Results:
- miR-197 was significantly downregulated in human ovarian cancer tissues and cell lines.
- Overexpression of miR-197 inhibited OVACAR-3 cell proliferation, colony formation, migration, and invasion.
- miR-197 upregulated E-cadherin and downregulated N-cadherin, vimentin, and snail.
- miR-197 directly targets ABCA7, which was overexpressed in ovarian cancer.
- Silencing ABCA7 inhibited cancer cell proliferation, migration, and invasion, and abolished miR-197's tumor-suppressive effects.
Conclusions:
- miR-197 acts as a tumor suppressor in ovarian cancer by inhibiting EMT.
- miR-197 targets ABCA7, suggesting a novel regulatory pathway in ovarian cancer.
- miR-197 holds therapeutic potential for ovarian cancer treatment.
Related Concept Videos
01:22MicroRNAs
01:22MicroRNAs