Sequence-selective DNA detection using multiple laminar streams: a novel microfluidic analysis method.

Yamashita, Kenichi; Yamaguchi, Yoshiko; Miyazaki, Masaya; Nakamura, Hiroyuki; Shimizu, Hazime; Maeda, Hideaki · Lab Chip · 2004

basic_science · Level V

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Abstract

On-site detection methods for DNA have been demanded in the pathophysiology field. Such analysis requires a simple and accurate method, rather than high-throughput. This report describes a novel microfluidic analysis method and its application for simple sequence-selective DNA detection. The method uses a microchannel device with a serpentine structure. Sequence-specific binding of probe DNA can be detected at one side of the microchannel. This method is capable of sequence-specific detection of DNA with high accuracy. Single base mutations can also be analyzed. Combination of laminar stream and laminar secondary flow in the microchannel enable specific detection of probe-bound DNA.

Medical subject headings