Related Experiment Video
Updated: Nov 1, 2025

miRNA Expression Analyses in Prostate Cancer Clinical Tissues
Published on: September 8, 2015
Circular RNA circHIPK3 modulates prostate cancer progression via targeting miR-448/MTDH signaling
1Department of Urology, Xuzhou Central Hospital, No. 199 Jiefang South Road, Xuzhou, 221009, Jiangsu, People's Republic of China.
Purpose:
Prostate cancer (PCa) is one of the most diagnosed cancers in men worldwide. Several studies have identified that circular RNAs (circRNAs) have a crucial impact on the biological processes in PCa. Therefore, it is necessary to study the molecular mechanism of circRNAs in tumor progression and metastasis.
Methods:
RNA interference was used to decrease circHIPK3 and MTDH expression. Overexpression vector was used to increase circHIPK3 and MTDH expression. Luciferase reporter assay were used to detect the relationship between circHIPK3 and miR-448 or between miR-448 and MTDH. MTT assay, colony formation assay and transwell assay were used to measure proliferation and migration of PCa cells.
Results:
Circular RNA circHIPK3 was significantly increased in PCa tissues and cell lines. And overexpression of circHIPK3 promoted the migration, proliferation, and invasion of PC-3 and 22Rv1 cells, while knockdown of circHIPK3 markedly repressed the above-mentioned series of biological processes. Furthermore, circHIPK3 promoted metadherin (MTDH) expression by sponging miR-448. In vivo experiments, it was also found that overexpression of circHIPK3 significantly promoted tumor growth.
Conclusions:
Our research shows that circHIPK3 plays a carcinogenic effect in PCa by regulating the miR-448/MTDH axis, indicating that circHIPK3 may be a potential therapeutic target for PCa.
Insights
Circular RNA circHIPK3 promotes prostate cancer (PCa) progression and metastasis by regulating the miR-448/MTDH axis. This finding suggests circHIPK3 as a potential therapeutic target for PCa treatment.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Prostate cancer (PCa) is a leading cancer diagnosis in men globally.
- Circular RNAs (circRNAs) play a significant role in PCa's biological processes.
- Understanding circRNA mechanisms is vital for PCa progression and metastasis research.
Purpose of the Study:
- Investigate the molecular mechanism of circHIPK3 in prostate cancer.
- Determine the role of circHIPK3 in PCa progression and metastasis.
- Explore circHIPK3 as a potential therapeutic target for PCa.
Main Methods:
- RNA interference and overexpression vectors were used to manipulate circHIPK3 and MTDH levels.
- Luciferase reporter assays assessed interactions between circHIPK3, miR-448, and MTDH.
- MTT, colony formation, and Transwell assays evaluated PCa cell proliferation and migration.
Main Results:
- circHIPK3 levels were elevated in PCa tissues and cell lines.
- Overexpression of circHIPK3 enhanced PCa cell migration, proliferation, and invasion.
- circHIPK3 promoted MTDH expression by sponging miR-448, and enhanced tumor growth in vivo.
Conclusions:
- circHIPK3 exhibits carcinogenic effects in PCa by modulating the miR-448/MTDH pathway.
- circHIPK3 represents a potential therapeutic target for prostate cancer.
- Further research into circHIPK3's role could lead to novel PCa treatments.
Related Concept Videos
mTOR Signaling and Cancer Progression
The mTOR pathway or the...
MicroRNAs
MicroRNAs
PI3K/mTOR/AKT Signaling Pathway
Abnormal Proliferation
Experimental RNAi

