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Updated: Jul 19, 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 expression and function in cancer
Ramiro Garzon1, Muller Fabbri, Amelia Cimmino
1Department of Virology, Immunology and Human Genetics, and Comprehensive Cancer Center, the Ohio State University, Columbus, OH 43210, USA.
Abstract:
MicroRNAs are small non-coding RNAs of 19-24 nucleotides in length that downregulate gene expression during various crucial cell processes such as apoptosis, differentiation and development. Recent work supports a role for miRNAs in the initiation and progression of human malignancies. Large high-throughput studies in patients revealed that miRNA profiling have the potential to classify tumors with high accuracy and predict outcome. Functional studies, some of which involve animal models, indicate that miRNAs act as tumor suppressors and oncogenes. Here, we summarize miRNA-profiling studies in human malignancies and examine the role of miRNAs in the pathogenesis of cancer. We also discuss the implications of these findings for the diagnosis and treatment of cancer.
Insights
MicroRNAs (miRNAs) are small RNAs that regulate genes and play roles in cancer development. miRNA profiling accurately classifies tumors and predicts patient outcomes, offering new diagnostic and therapeutic strategies.
Area of Science:
- Molecular Biology
- Genetics
- Oncology
Background:
- MicroRNAs (miRNAs) are small non-coding RNAs regulating gene expression in vital cellular processes.
- Emerging evidence implicates miRNAs in the initiation and progression of human cancers.
- miRNA dysregulation is increasingly recognized as a hallmark of malignancy.
Purpose of the Study:
- To summarize miRNA profiling studies in human malignancies.
- To examine the role of miRNAs in cancer pathogenesis.
- To discuss the implications of miRNAs for cancer diagnosis and treatment.
Main Methods:
- Review of high-throughput miRNA profiling studies in cancer patients.
- Analysis of functional studies investigating miRNA roles (tumor suppressors/oncogenes).
- Examination of animal models for miRNA function in cancer.
Main Results:
- miRNA profiling demonstrates high accuracy in tumor classification and outcome prediction.
- miRNAs function as both tumor suppressors and oncogenes in cancer development.
- Altered miRNA expression patterns are characteristic of various human malignancies.
Conclusions:
- miRNA profiling holds significant potential for accurate cancer diagnosis and prognosis.
- Understanding miRNA roles in pathogenesis can guide novel therapeutic strategies.
- Targeting miRNAs may offer new avenues for cancer treatment.
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