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An Integrated Microfluidic Device for Rapid Cell Lysis and DNA Purification of Epithelial Cell Samples

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In this paper, we describe the design and fabrication of a microfluidic device for cell lysis and DNA purification, and the results of device tests using a real sample of buccal cells. Cell lysis was thermally executed for two minutes at 80 °C in a serpentine type microreactor (20 μL) using an Au microheater with a microsensor. The DNA was then mixed with other residual products and purified by a new filtration process involving micropillars and 50–80 μm microbeads. The entire process of sample loading, cell lysis, DNA purification, and sample extraction was successfully completed in the microchip within five minutes. Sample preparation within the microchip was verified by performing a SY158 gene PCR analysis and gel electrophoresis on the products obtained from the chip. The new purification method enhanced DNA purity from 0.93 to 1.62 after purification.
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Document Type: Research Article

Publication date: May 1, 2011

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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