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Updated: May 15, 2025
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MicroRNA Detection in Prostate Tumors by Quantitative Real-time PCR qPCR
Published on: May 16, 2012
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MicroRNA-18b-5p Inhibits the Malignant Progression of Prostate Cancer Through Downregulating TRAF5.
Xiaoran Wang1, Xin Yu2, Yong Wang1
1Urology Surgery, The People Hospital of Jilin Province (Jilin Province Clinical Research Center of Emergency and Critical Diseases), Changchun, Jilin, 130021, People's Republic of China.
International Journal of General Medicine
|April 7, 2025
Summary
Upregulated microRNA-18b-5p (miR-18b-5p) inhibits prostate cancer (PCa) progression by downregulating TNF receptor-associated factor 5 (TRAF5). This finding offers a potential new therapeutic strategy for PCa treatment.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- MicroRNAs (miRNAs) play crucial roles in cancer development, but the specific function of miR-18b-5p in prostate cancer (PCa) remains unclear.
- Understanding the molecular mechanisms of miRNA involvement is vital for developing targeted therapies.
Purpose of the Study:
- To investigate the role and mechanism of miR-18b-5p in prostate cancer (PCa).
- To explore the regulatory axis between miR-18b-5p and TNF receptor-associated factor 5 (TRAF5) in PCa progression.
Main Methods:
- Quantitative real-time PCR (RT-qPCR) was used to detect miR-18b-5p and TRAF5 expression in PCa tissues and cell lines.
- In vitro experiments assessed the functional impact of miR-18b-5p and TRAF5 on PCa cell behavior.
- Luciferase reporter assays, miRNA pull-down assays, and rescue experiments elucidated the underlying molecular mechanism.
Main Results:
- Prostate cancer (PCa) tissues and cell lines exhibited lower miR-18b-5p expression and higher TNF receptor-associated factor 5 (TRAF5) expression.
- Overexpression of miR-18b-5p or downregulation of TRAF5 suppressed PCa cell proliferation, migration, and invasion, while promoting apoptosis.
- miR-18b-5p directly targets the 3'-untranslated region of TRAF5, regulating its expression. TRAF5 overexpression counteracted the inhibitory effects of miR-18b-5p.
Conclusions:
- Upregulated miR-18b-5p inhibits prostate cancer (PCa) cell progression by downregulating TRAF5.
- The miR-18b-5p/TRAF5 axis represents a potential novel therapeutic target for prostate cancer (PCa).
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