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Circulating MicroRNA Quantification Using DNA-binding Dye Chemistry and Droplet Digital PCR
Published on: June 26, 2016
Circulating microRNAs as biomarkers - True Blood?
Nathalie Schöler1, Christian Langer, Florian Kuchenbauer
1Department of Internal Medicine III, University Hospital of Ulm, 89081 Ulm, Germany. florian.kuchenbauer@uni-ulm.de.
Genome Medicine
|November 25, 2011
Summary
Researchers identified unique blood microRNA signatures for various diseases. This discovery shows potential for accurate, blood-based disease diagnosis using microRNA expression patterns.
Area of Science:
- Biochemistry
- Molecular Biology
- Genetics
Background:
- MicroRNAs are key post-transcriptional regulators.
- They play roles in numerous physiological and pathophysiological processes.
Purpose of the Study:
- To compare blood microRNA expression profiles across diverse diseases.
- To identify disease-specific microRNA expression patterns.
Main Methods:
- Analysis of hundreds of blood-borne microRNA expression profiles.
- Comparison between nonmalignant and malignant disease samples.
Main Results:
- Distinct microRNA expression patterns were identified for different diseases.
- These patterns accurately discriminated between disease samples.
Conclusions:
- MicroRNA signatures show significant potential for blood-based disease diagnosis.
- This approach may lead to novel diagnostic tools for various conditions.
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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...

