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Updated: May 26, 2025

miRNA Expression Analyses in Prostate Cancer Clinical Tissues
Published on: September 8, 2015
Association between the expression of specific microRNAs and prostate cancer progression- a systematic review and
1Department of Pathology, College of Medicine, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, Saudi Arabia.
Background:
This systematic review and metanalysis aimed to summarize the evidence supporting the significance of particular MiRNAs in PrCa progression and to thoroughly examine the body of prior research.
Methods:
In accordance with the PRISMA guidelines, this review was conducted using a specifically design data extraction protocol and searching several online databases for relevant articles. The protocol was registered in the PROSPERO database (CRD42023428460).
Results:
8 studies were ultimately included in this review. MiRNAs significantly reduced PrCa proliferation, with an odds ratio (OR) of 0.28 (95% CI: 0.21-0.39) and a risk ratio (RR) of 0.51 (95% CI: 0.43-0.61), though moderate heterogeneity was observed (I² = 57%). For two studies investigating MiRNAs as biomarkers for predicting metastasis, the pooled OR was 0.60 (95% CI: 0.47-0.76) and the RR was 0.72 (95% CI: 0.62-0.84), both demonstrating significant predictive value with low heterogeneity (I² = 0%).
Conclusion:
The results emphasize the potential of miRNAs as biomarkers for predicting PrCa metastasis and demonstrate that miRNAs have a discernible effect on PrCa proliferation. However, to improve our comprehension of MiRNA's function in this condition, additional studies are required to address the limitations and investigate how MiRNA acts in many areas of PrCa.
Systematic Review Registration:
https://www.crd.york.ac.uk/prospero/, identifier CRD42023428460.
Insights
MicroRNAs (miRNAs) significantly inhibit prostate cancer (PrCa) proliferation and show promise as biomarkers for predicting metastasis. Further research is needed to fully understand their role in PrCa progression.
Area of Science:
- Oncology
- Molecular Biology
- Biomarkers
Background:
- Prostate cancer (PrCa) remains a significant health concern.
- MicroRNAs (miRNAs) are increasingly recognized for their roles in cancer development.
- Understanding miRNA involvement in PrCa is crucial for advancing treatment and diagnosis.
Purpose of the Study:
- To systematically review and synthesize evidence on the significance of specific miRNAs in prostate cancer progression.
- To evaluate the impact of miRNAs on PrCa proliferation and metastasis.
- To assess the potential of miRNAs as diagnostic or prognostic biomarkers for PrCa.
Main Methods:
- Systematic review and meta-analysis conducted following PRISMA guidelines.
- Data extraction protocol and comprehensive search of multiple online databases.
- Registered protocol (PROSPERO: CRD42023428460) ensuring methodological rigor.
Main Results:
- Eight studies were included, demonstrating that miRNAs significantly reduce PrCa proliferation (OR=0.28, RR=0.51).
- Moderate heterogeneity was observed for proliferation data (I²=57%).
- MiRNAs showed significant predictive value for metastasis (OR=0.60, RR=0.72) with low heterogeneity (I²=0%).
Conclusions:
- MiRNAs exhibit a clear effect on prostate cancer proliferation.
- MiRNAs hold potential as reliable biomarkers for predicting PrCa metastasis.
- Further investigation is warranted to elucidate the multifaceted roles of miRNAs in various aspects of PrCa.
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