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Updated: Mar 2, 2026

MicroRNA Amplification and Recognition through Locked-nucleic-acid In situ Hybridization as a Novel Detection and Quantification Method
Published on: October 7, 2025
[MicroRNA in Various Aspects of Cancer Development]
1Dept. of Surgery, Kyushu University Beppu Hospital.
Abstract:
MicroRNAs(miRNAs)are small(18-25 nucleotides)noncoding RNA molecules that bind to partially complementary mRNA sequences, resulting in target degradation or translation inhibition. A single miRNA can influence the expression of hundreds of target genes, and miRNAs have been implicated as key molecules in various diseases, including cancer. Many studies have shown that the miRNAs play an important role in cancer cells and tumor microenvironment and may be biomarkers for early detection and therapeutic targets for various cancers. Recently, relationships between miRNAs and immunocheckpoint molecules have been focused on as new tumor progression associated mechanisms. As for biomarkers, cell-free miRNAs detected in body fluids(circulating miRNAs)have attached the attention of researchers due to their potential as tumor-specific and non-invasive biomarkers. In terms of strategies to use miRNAs as therapeutic targets, developments of tissue specific delivery systems, including lipid nanoparticles or exosome vectors, are progressing. Here we will review the mechanisms and clinical uses of miRNAs in cancer.
Insights
MicroRNAs (miRNAs) are key regulators in cancer, influencing tumor cells and the microenvironment. Research explores their potential as non-invasive biomarkers and therapeutic targets for cancer treatment.
Area of Science:
- Molecular Biology
- Genetics
- Oncology
Background:
- MicroRNAs (miRNAs) are small noncoding RNAs regulating gene expression.
- miRNAs are crucial in various diseases, notably cancer, affecting tumor cells and the microenvironment.
- Emerging research links miRNAs to immunocheckpoint molecules in tumor progression.
Purpose of the Study:
- To review the mechanisms of miRNAs in cancer.
- To discuss the clinical applications of miRNAs in cancer detection and therapy.
- To highlight circulating miRNAs as non-invasive biomarkers and novel therapeutic strategies.
Main Methods:
- Literature review of miRNA mechanisms in cancer.
- Analysis of studies on miRNA biomarkers for cancer detection.
- Examination of therapeutic strategies involving miRNAs and delivery systems.
Main Results:
- miRNAs significantly impact cancer cell behavior and tumor microenvironment.
- Circulating miRNAs show promise as non-invasive biomarkers for early cancer detection.
- miRNA-based therapies and targeted delivery systems are under active development.
Conclusions:
- miRNAs are pivotal in cancer pathogenesis and progression.
- miRNAs offer potential as diagnostic biomarkers and therapeutic targets.
- Advancements in delivery systems are crucial for effective miRNA-based cancer therapies.
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