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Updated: Mar 14, 2026

Exosomal miRNA Analysis in Non-small Cell Lung Cancer NSCLC Patients' Plasma Through qPCR: A Feasible Liquid Biopsy Tool
Published on: May 27, 2016
Applications of Extracellular RNAs in Oncology
Jonathan R Thompson1, Jing Zhu2, Deepak Kilari1
1Division of Hematology and Oncology, Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, 53226, USA.
Abstract:
Extracellular RNAs consist of coding and non-coding transcripts released from all cell types, which are involved in multiple cellular processes, predominantly through regulation of gene expression. Recent advances have helped us better understand the functions of these molecules, particularly microRNAs (miRNAs). Numerous pre-clinical and human studies have demonstrated that miRNAs are dysregulated in cancer and contribute to tumorigenesis and metastasis. miRNA profiling has extensively been evaluated as a non-invasive method for cancer diagnosis, prognostication, and assessment of response to cancer therapies. Broader applications for miRNAs in these settings are currently under active development. Investigators have also moved miRNAs into the realm of cancer therapy. miRNA antagonists targeting miRNAs that silence tumor suppressor genes have shown promising pre-clinical activity. Alternatively, miRNA mimics that silence oncogenes are also under active investigation. These miRNA-based cancer therapies are in early development, but represent novel strategies for clinical management of human cancer.
Insights
Extracellular microRNAs (miRNAs) are key regulators of gene expression implicated in cancer development and progression. Research is exploring their potential as non-invasive biomarkers and novel therapeutic targets for cancer treatment.
Area of Science:
- Molecular Biology
- Genetics
- Cancer Research
Background:
- Extracellular RNAs (exRNAs) are transcripts released from cells, regulating cellular processes via gene expression.
- MicroRNAs (miRNAs), a class of non-coding exRNAs, are crucial regulators of gene expression.
- Dysregulated miRNAs are implicated in cancer initiation, progression, metastasis, and therapeutic response.
Purpose of the Study:
- To review the role of extracellular microRNAs (miRNAs) in cancer.
- To discuss the potential of miRNA profiling for cancer diagnosis and prognostication.
- To explore the therapeutic applications of miRNAs in cancer treatment.
Main Methods:
- Literature review of pre-clinical and human studies on extracellular RNAs and miRNAs in cancer.
- Analysis of current research on miRNA profiling for cancer biomarkers.
- Evaluation of emerging miRNA-based cancer therapeutic strategies.
Main Results:
- miRNAs are frequently dysregulated in various cancers.
- miRNA profiling shows promise as a non-invasive diagnostic and prognostic tool.
- miRNA antagonists and mimics demonstrate pre-clinical efficacy in cancer models.
Conclusions:
- Extracellular miRNAs play significant roles in cancer biology.
- miRNA-based approaches offer novel avenues for cancer detection and therapy.
- Further development is needed for clinical translation of miRNA-based cancer strategies.
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