Related Experiment Video
Updated: Nov 16, 2025

MicroRNA Detection in Prostate Tumors by Quantitative Real-time PCR qPCR
Published on: May 16, 2012
Circ_0004417 inhibits the progression of prostate cancer through sponging miR-1228
1Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China. gswxw@njmu.edu.cn.
Objective:
Circular RNAs (circRNAs) have been proved to play a vital role in tumorigenesis and progression. Nevertheless, the potential mechanism of circRNAs in prostate cancer (PC) remains unclear. In the present study, we aimed to investigate the exact role of circ_0004417 in the progression of prostate cancer.
Patients And Methods:
Quantitative real-time polymerase chain reaction (qRT-PCR) was used to detect the expression of circ_0004417 in primary PC tissues and cell lines. In vitro experiments were conducted to explore the function of circ_0004417 in PC progression, including cell counting kit-8 (CCK-8) assay, colony formation assay and transwell assay. Furthermore, the regulatory function of circ_0004417 on miRNA, p-Akt and E-cadherin was investigated to elucidate the potential mechanisms.
Results:
Circ_0004417 was significantly down-regulated in PC tissues and cells (p<0.05). Functional experiments proved that circ_0004417 overexpression markedly inhibited the proliferation and invasion of PC cells (p<0.05). In addition, the results demonstrated that circ_0004417 served as a sponge for miR-1228 and regulated expressions of p-Akt and E-cadherin.
Conclusions:
Circ_0004417 inhibits the progression of prostate cancer through sponging miR-1228. All our findings suggest that circ_0004417 can be used as a potential therapeutic target for PC.
Insights
Circular RNA (circRNA) circ_0004417 is downregulated in prostate cancer (PC). Overexpression of circ_0004417 inhibits PC progression by sponging miR-1228, suggesting it as a potential therapeutic target.
Area of Science:
- Molecular Biology
- Oncology
- Genetics
Background:
- Circular RNAs (circRNAs) are implicated in tumorigenesis and cancer progression.
- The specific role and mechanisms of circRNAs in prostate cancer (PC) require further elucidation.
Purpose of the Study:
- To investigate the role of circ_0004417 in prostate cancer progression.
- To explore the underlying molecular mechanisms of circ_0004417 in PC.
Main Methods:
- Quantitative real-time polymerase chain reaction (qRT-PCR) for expression analysis.
- In vitro assays (CCK-8, colony formation, Transwell) to assess functional impact.
- Investigation of regulatory interactions with miRNA, p-Akt, and E-cadherin.
Main Results:
- Circ_0004417 expression was significantly downregulated in PC tissues and cell lines.
- Overexpression of circ_0004417 inhibited PC cell proliferation and invasion.
- Circ_0004417 acts as a sponge for miR-1228, regulating p-Akt and E-cadherin expression.
Conclusions:
- Circ_0004417 inhibits prostate cancer progression via sponging miR-1228.
- Circ_0004417 presents a potential therapeutic target for prostate cancer treatment.
Related Concept Videos
MicroRNAs
MicroRNAs
mTOR Signaling and Cancer Progression
The mTOR pathway or the...
Abnormal Proliferation
The Retinoblastoma Gene
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
Inhibition of Cdk Activity

