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Updated: May 11, 2026

11:29
miRNA Expression Analyses in Prostate Cancer Clinical Tissues
Published on: September 8, 2015
Circulating microRNAs as potential new biomarkers for prostate cancer
A Sita-Lumsden1, D A Dart, J Waxman
1Androgen Signalling Laboratory, Department of Surgery and Cancer, Imperial College London, London W12 0NN, UK.
British Journal of Cancer
|May 2, 2013
Summary
Circulating microRNAs (miRNAs) show promise as biomarkers for prostate cancer, offering a potential improvement over current diagnostic tests. These stable molecules detected in biofluids could help distinguish aggressive cancers from slow-growing ones.
Area of Science:
- Biochemistry
- Oncology
- Molecular Biology
Background:
- Circulating microRNAs (miRNAs) are a rapidly evolving research area with potential in cancer diagnostics and therapeutics.
- Prostate cancer, common in UK men, currently lacks sensitive and specific diagnostic tests.
- Existing tests cannot differentiate between indolent and aggressive prostate cancers.
Purpose of the Study:
- To review the current understanding of circulating miRNAs in prostate cancer.
- To explore the potential of circulating miRNAs as diagnostic, prognostic, and predictive biomarkers for prostate cancer.
Main Methods:
- Literature review of studies on circulating miRNAs in prostate cancer.
- Analysis of miRNA stability, detectability, and quantifiability in biofluids.
- Evaluation of miRNA roles in cancer diagnostics and therapeutics.
Main Results:
- Circulating miRNAs are highly stable and detectable in accessible biofluids.
- miRNAs show potential as novel biomarkers for prostate cancer detection and classification.
- Further research is needed to fully establish their clinical utility.
Conclusions:
- Circulating miRNAs represent a promising avenue for improving prostate cancer diagnostics.
- Their stability and detectability make them suitable candidates for biomarkers.
- Future studies should focus on validating their role in clinical settings.
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MicroRNAs
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
MicroRNAs
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA ends...

