title: Development of a microfluidic platform with an optical imaging microarray capable of attomolar target DNA detection.
abstract: In this paper, DNA hybridization in a microfluidic manifold is performed using fluorescence detection on a fiber-optic microarray. The microfluidic device integrates optics, sample transport, and fluidic interconnects on a single platform. A high-density optical imaging fiber array containing oligonucleotide-labeled microspheres was developed. DNA hybridization was observed at concentrations as low as 10 aM with response times of less than 15 min at a flow rate of 1 microL/min using 50 microL of target DNA samples. The fast response times coupled with the low sample volumes and the use of a high-density, fiber-optic microarray format make this method highly advantageous. This paper describes the initial development, optimization, and integration of the microfluidic platform with imaging fiber arrays.
authors.affiliation: Department of Chemistry, Tufts University, Medford, Massachusetts 02155, USA.
authors.forename: Michaela
authors.initials: M
authors.lastname: Bowden
authors.forename: Linan
authors.initials: L
authors.lastname: Song
authors.forename: David R
authors.initials: DR
authors.lastname: Walt
mesh_terms: D001413:Bacillus thuringiensis / Q000235:genetics; D015342:DNA Probes / Q000235:genetics; D004269:DNA, Bacterial / Q000032:analysis* / Q000235:genetics; D044085:Microfluidics / Q000295:instrumentation* / Q000379:methods*; D020411:Oligonucleotide Array Sequence Analysis / Q000379:methods*
chemical_list: D015342:DNA Probes; D004269:DNA, Bacterial