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Updated: May 13, 2026
An Orthotopic Murine Model of Human Prostate Cancer Metastasis
Published on: September 18, 2013
miR-152 controls migration and invasive potential by targeting TGFα in prostate cancer cell lines
1State Key Laboratory of Reproductive Medicine, Department of Urology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Background:
MicroRNAs (miRNAs) are a class of short non-coding RNAs that function in diverse biological processes. Aberrant miR-152 expression has been frequently reported in various malignant tumors. However, the mechanism of miR-152 in prostate cancer (PCa) remains unclear. This study aims to determine the function of miR-152 in PCa cells and identify the novel molecular targets regulated by miR-152.
Methods:
The expression levels of transforming growth factor-alpha (TGFα) were determined in three samples of PCa and adjacent non-tumorous tissues by Western blot analysis. miR-152 levels in 48 primary PCa and 15 non-malignant tissue samples were measured by qRT-PCR. The effects of forced miR-152 expression or TGFα knockdown on PCa cells were evaluated by cell migration and invasion assays, as well as Western blot analysis. Dual-luciferase reporter assay was used to identify binding sites between miR-152 and TGFα 3'-UTR.
Results:
TGFα was upregulated in PCa tissue samples compared with that in adjacent normal ones. miR-152 expression was significantly decreased in primary PCa samples compared with that in non-malignant samples. Patients with Gleason scores >7 exhibited lower miR-152 levels than those with lower scores. Moreover, low miR-152 expression is correlated with advanced pathological T-stages. Forced miR-152 expression or TGFα knockdown significantly reduced the migratory and invasive capabilities of PCa cells in vitro. TGFα is a direct target gene of miR-152.
Conclusions:
Our findings suggest that miR-152 can act as a tumor suppressor that targets TGFα. miR-152 is a promising molecular target that inhibits PCa cell migration and invasion.
Insights
MicroRNA-152 (miR-152) acts as a tumor suppressor in prostate cancer (PCa) by inhibiting cell migration and invasion. This study identifies transforming growth factor-alpha (TGFα) as a direct target of miR-152, revealing a novel therapeutic pathway.
Area of Science:
- Molecular Biology
- Oncology
- Gene Regulation
Background:
- MicroRNAs (miRNAs) are crucial regulators in biological processes, with altered expression linked to various cancers.
- The specific role and molecular targets of miR-152 in prostate cancer (PCa) pathogenesis remain largely unelucidated.
- Prostate cancer is a significant global health concern, necessitating research into novel therapeutic targets.
Purpose of the Study:
- To investigate the functional role of miR-152 in prostate cancer cells.
- To identify novel molecular targets regulated by miR-152 in the context of PCa.
- To explore the potential of miR-152 as a therapeutic target for PCa.
Main Methods:
- Quantitative real-time PCR (qRT-PCR) and Western blot analysis were used to assess miR-152 and transforming growth factor-alpha (TGFα) expression in PCa tissues.
- In vitro cell migration and invasion assays were performed to evaluate the functional impact of miR-152 modulation.
- Dual-luciferase reporter assays were employed to confirm the direct interaction between miR-152 and the 3'-untranslated region (3'-UTR) of TGFα.
Main Results:
- miR-152 expression was significantly downregulated in PCa tissues compared to non-malignant samples, correlating with higher Gleason scores and advanced pathological T-stages.
- Overexpression of miR-152 or knockdown of TGFα markedly suppressed PCa cell migration and invasion in vitro.
- TGFα was validated as a direct target gene of miR-152, indicating a regulatory relationship.
Conclusions:
- miR-152 functions as a tumor suppressor in prostate cancer.
- The tumor-suppressive activity of miR-152 is mediated, at least in part, through the direct targeting of TGFα.
- miR-152 represents a promising molecular target for therapeutic strategies aimed at inhibiting PCa cell migration and invasion.
