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Continuous-flow polymerase chain reaction of single-copy DNA in microfluidic microdroplets.

Schaerli, Yolanda and Wootton, Robert C. and Robinson, Tom and Stein, Viktor and Dunsby, Christopher and Neil, Mark A. A. and French, Paul M. W. and Demello, Andrew J. and Abell, Chris and Hollfelder, Florian (2009):
Continuous-flow polymerase chain reaction of single-copy DNA in microfluidic microdroplets.
In: Analytical chemistry, pp. 302-6, 81, (1), ISSN 1520-6882, [Article]

Abstract

We present a high throughput microfluidic device for continuous-flow polymerase chain reaction (PCR) in water-in-oil droplets of nanoliter volumes. The circular design of this device allows droplets to pass through alternating temperature zones and complete 34 cycles of PCR in only 17 min, avoiding temperature cycling of the entire device. The temperatures for the applied two-temperature PCR protocol can be adjusted according to requirements of template and primers. These temperatures were determined with fluorescence lifetime imaging (FLIM) inside the droplets, exploiting the temperature-dependent fluorescence lifetime of rhodamine B. The successful amplification of an 85 base-pair long template from four different start concentrations was demonstrated. Analysis of the product by gel-electrophoresis, sequencing, and real-time PCR showed that the amplification is specific and the amplification factors of up to 5 x 10(6)-fold are comparable to amplification factors obtained in a benchtop PCR machine. The high efficiency allows amplification from a single molecule of DNA per droplet. This device holds promise for convenient integration with other microfluidic devices and adds a critical missing component to the laboratory-on-a-chip toolkit.

Item Type: Article
Erschienen: 2009
Creators: Schaerli, Yolanda and Wootton, Robert C. and Robinson, Tom and Stein, Viktor and Dunsby, Christopher and Neil, Mark A. A. and French, Paul M. W. and Demello, Andrew J. and Abell, Chris and Hollfelder, Florian
Title: Continuous-flow polymerase chain reaction of single-copy DNA in microfluidic microdroplets.
Language: English
Abstract:

We present a high throughput microfluidic device for continuous-flow polymerase chain reaction (PCR) in water-in-oil droplets of nanoliter volumes. The circular design of this device allows droplets to pass through alternating temperature zones and complete 34 cycles of PCR in only 17 min, avoiding temperature cycling of the entire device. The temperatures for the applied two-temperature PCR protocol can be adjusted according to requirements of template and primers. These temperatures were determined with fluorescence lifetime imaging (FLIM) inside the droplets, exploiting the temperature-dependent fluorescence lifetime of rhodamine B. The successful amplification of an 85 base-pair long template from four different start concentrations was demonstrated. Analysis of the product by gel-electrophoresis, sequencing, and real-time PCR showed that the amplification is specific and the amplification factors of up to 5 x 10(6)-fold are comparable to amplification factors obtained in a benchtop PCR machine. The high efficiency allows amplification from a single molecule of DNA per droplet. This device holds promise for convenient integration with other microfluidic devices and adds a critical missing component to the laboratory-on-a-chip toolkit.

Journal or Publication Title: Analytical chemistry
Volume: 81
Number: 1
Divisions: 10 Department of Biology
10 Department of Biology > Protein Engineering of Ion Conducting Nanopores
Date Deposited: 14 Nov 2016 11:48
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