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Updated: Feb 8, 2026

miRNA Expression Analyses in Prostate Cancer Clinical Tissues
Published on: September 8, 2015
The microRNA signatures: aberrantly expressed miRNAs in prostate cancer
1Symbiosis School of Biological Sciences, Symbiosis International (Deemed University), Lavale, Mulshi, Pune, 412115, India. neetimohan27@gmail.com.
Abstract:
MicroRNAs (miRNAs) are short, non-coding, conserved, oligonucleotides that are regulatory in nature and are often dysregulated in many cancers including prostate cancer. Depending on the level of complementarity between the miRNA and mRNA target, they can either inhibit translation or degrade the target mRNA. MiRNAs expression is specific to the type of cancer, its stage and level of metastasis, making miRNAs potential stage-specific biomarkers of cancer. Recent research has shown that these miRNAs have the potential to be a diagnostic and prognostic non-invasive biomarker for various cancers including prostate cancer. Various miRNAs have been reported as novel biomarkers for prostate cancer therapy. However, there is inconsistency in the data reported and no overlapping expression pattern could be found. In this review, we have highlighted the most consistently reported dysregulated miRNAs in prostate cancer from the existing literature and discussed the currently available data on their role in regulating the hallmarks of prostate cancer. These four most consistently reported dysregulated miRNAs viz. miRNA-141, miRNA-375, miRNA-221 and miRNA-21 need to be further validated in terms of their regulatory potential in regulating various pathways important for prostate cancer management.
Insights
MicroRNAs (miRNAs) are key regulators in prostate cancer. This review highlights consistently dysregulated miRNAs, like miRNA-141, as potential non-invasive biomarkers for diagnosis and therapy.
Area of Science:
- Molecular Biology
- Oncology
- Biochemistry
Background:
- MicroRNAs (miRNAs) are regulatory non-coding oligonucleotides.
- miRNA dysregulation is common in prostate cancer, influencing disease progression.
- miRNAs show potential as cancer-specific biomarkers.
Purpose of the Study:
- To review consistently reported dysregulated miRNAs in prostate cancer.
- To discuss the role of these miRNAs in prostate cancer hallmarks.
- To identify potential non-invasive biomarkers for prostate cancer diagnosis and therapy.
Main Methods:
- Literature review of existing research on miRNA expression in prostate cancer.
- Analysis of consistently reported dysregulated miRNAs.
- Discussion of the regulatory roles of identified miRNAs in prostate cancer pathways.
Main Results:
- Identified four consistently dysregulated miRNAs in prostate cancer: miRNA-141, miRNA-375, miRNA-221, and miRNA-21.
- These miRNAs play roles in regulating key prostate cancer hallmarks.
- Existing data shows inconsistencies, necessitating further validation.
Conclusions:
- miRNA-141, miRNA-375, miRNA-221, and miRNA-21 are promising candidates for prostate cancer biomarkers.
- Further validation is required to confirm their regulatory potential in prostate cancer management.
- Consistent miRNA profiling could lead to improved diagnostic and therapeutic strategies.
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