Elevated miR-221-3p inhibits epithelial-mesenchymal transition and biochemical recurrence of prostate cancer via targeting KPNA2: an evidence-based and knowledge-guided strategy
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View abstract on PubMed
Summary
This summary is machine-generated.Down-regulation of miR-221-3p is a risk factor for prostate cancer (PCa) recurrence. Restoring miR-221-3p levels inhibits PCa cell growth and spread by targeting KPNA2.
Area Of Science
- Oncology
- Molecular Biology
- Genetics
Background
- Prostate cancer (PCa) is a prevalent malignancy globally, with biochemical recurrence (BCR) impacting patient prognosis.
- MicroRNAs (miRNAs) are key regulators in cancer development; miR-221-3p is implicated in PCa, but its role in BCR and underlying mechanisms remain unclear.
- Inconsistent reports on miR-221-3p's role in PCa BCR necessitate further investigation into its targets and functions.
Purpose Of The Study
- To elucidate the role and mechanism of miR-221-3p in prostate cancer (PCa) development and biochemical recurrence (BCR).
- To address inconsistencies in literature regarding miR-221-3p's association with PCa BCR through quantitative meta-analysis.
- To identify and validate key molecular targets and pathways regulated by miR-221-3p in PCa progression.
Main Methods
- A meta-analysis was performed to quantify the association between miR-221-3p and PCa BCR.
- A knowledge-guided network strategy integrating multi-omics data (miRNA-mRNA, protein-protein interactions) was employed to prioritize miR-221-3p targets.
- Computational identification and experimental validation (cell lines, clinical samples) of key targets, including assays for proliferation, migration, invasion, and epithelial-to-mesenchymal transition (EMT).
Main Results
- Down-regulation of miR-221-3p significantly correlated with poorer biochemical recurrence-free survival (BRFS) in PCa patients (HR: 0.72, P < 0.00001).
- miR-221-3p was significantly downregulated in PCa cells compared to normal controls, while its key target, KPNA2, was overexpressed in PCa cells and tissues.
- Overexpression of miR-221-3p suppressed PCa cell proliferation, migration, invasion, and EMT in vitro by directly targeting and downregulating KPNA2.
Conclusions
- Decreased miR-221-3p levels represent a risk factor for PCa BCR.
- Upregulating miR-221-3p can inhibit the malignant progression and EMT of PCa cells through direct targeting of KPNA2.
- Future research will focus on the translational and personalized applications of these findings in PCa management.
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