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Droplet Digital PCR enables reproducible quantification of microRNA biomarkers
Date:9/1/2013

Seattle, Wash. September 1, 2013 A study published online in Nature Methods today demonstrated that Droplet Digital PCR (ddPCR) technology can be used to precisely and reproducibly quantify microRNA (miRNA) in plasma and serum across different days, paving the way for further development of miRNA and other nucleic acids as circulating biomarkers.

"In the field of circulating microRNA diagnostics, droplet digital PCR enables us to finally perform biomarker studies in which the measurements are directly comparable across days within a laboratory and even among different laboratories," said Dr. Muneesh Tewari, Associate Member in the Human Biology Division at the Fred Hutchinson Cancer Research Center and lead author of the study.

Challenges in miRNA quantification

miRNAs are small regulatory RNA molecules with diverse cellular functions. The human genome may encode over 1,000 miRNAs, which could target about 60 percent of mammalian genes. Because they are abundant in many cell types, exist in highly stable extracellular forms, and may provide direct information about disease processes, they are being actively studied as blood-based biomarkers for cancer and other diseases.

Quantitative real-time PCR (qPCR) has been used for the analytical measurement of miRNAs in blood samples; however, researchers have found that qPCR measurements of miRNAs in serum or plasma display unacceptably high interday variability, undermining the use of miRNAs as reliable blood-based biomarkers. An approach that yields more dependable results has therefore been sought by researchers in this field.

Advantages of ddPCR for miRNA detection

Digital PCR has many adv
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Contact: Ken Li
kli@chempetitive.com
312-532-4675
Chempetitive Group
Source:Eurekalert

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