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Updated: Mar 10, 2026

MicroRNA Amplification and Recognition through Locked-nucleic-acid In situ Hybridization as a Novel Detection and Quantification Method
Published on: October 7, 2025
MicroRNAs as paracrine signaling mediators in cancers and metabolic diseases
Akiko Matsuda1, Irene K Yan1, Catherine Foye1
1Departments of Transplantation and Cancer Biology, Mayo Clinic, 4500 San Pablo Road South, Jacksonville, FL 32224, USA.
Abstract:
The contribution of microRNAs to the regulation of mRNA expression during physiological and developmental processes are well-recognized. These roles are being expanded by recent observations that emphasize the capability of miRNA to participate in inter-cellular signaling and communication. Several factors support a functional role for miRNA as mediators of cell-to-cell signaling. miRNA are able to exist within the extracellular milieu or circulation, and their stability and integrity maintained through association with binding proteins or lipoproteins, or through encapsulation within cell-derived membrane vesicles. Furthermore, miRNA can retain functionality and regulate target gene expression following their uptake by recipient cells. In this overview, we review specific examples that will highlight the potential of miRNA to serve as paracrine signaling mediators in metabolic diseases and cancers. Elucidating the mechanisms involved in inter-cellular communication involving miRNA will provide new insights into disease pathogenesis and potential therapeutic opportunities.
Insights
MicroRNAs (miRNAs) are increasingly recognized for their role in cell-to-cell communication. These molecules can travel between cells, influencing gene expression and offering potential therapeutic targets for diseases like cancer.
Area of Science:
- Molecular Biology
- Cell Biology
- Biochemistry
Background:
- MicroRNAs (miRNAs) are established regulators of mRNA expression in physiological and developmental processes.
- Emerging evidence highlights miRNAs' crucial function in intercellular signaling and communication.
- miRNAs are stable in extracellular environments, protected by proteins, lipoproteins, or vesicles.
Purpose of the Study:
- To review the role of miRNAs as mediators of intercellular communication.
- To highlight the potential of miRNAs in paracrine signaling within metabolic diseases and cancers.
- To explore how understanding miRNA communication can advance disease pathogenesis insights and therapeutics.
Main Methods:
- Literature review of studies on miRNA stability and intercellular transfer.
- Analysis of examples demonstrating miRNA paracrine signaling in disease contexts.
- Synthesis of current knowledge on miRNA function in recipient cells.
Main Results:
- miRNAs are found in extracellular fluids and circulation, maintaining integrity.
- Encapsulation in vesicles or association with proteins/lipoproteins enhances miRNA stability.
- Uptake by recipient cells allows miRNAs to regulate target gene expression.
Conclusions:
- miRNAs possess significant potential as paracrine signaling mediators.
- Intercellular miRNA communication plays a role in metabolic diseases and cancers.
- Further research into miRNA signaling mechanisms may reveal new therapeutic strategies.
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