title: DNA detection on ultrahigh-density optical fiber-based nanoarrays.
abstract: Nanoarrays for DNA detection were fabricated on etched nanofiber bundles based on recently developed techniques for microscale arrays. Two different-sized nanoarrays were created: one with 700 nm feature sizes and a 1 microm center-to-center pitch (approximately 1x10(6) array elements/mm(2)) and one with 300 nm feature sizes and a 500 nm center-to-center pitch (4.6x10(6) array elements/mm(2)). A random, multiplexed array composed of oligonucleotide-functionalized nanospheres was constructed and used for parallel detection and analysis of fluorescently labeled DNA targets. We have used these arrays to detect a variety of target sequences including Bacillus thuringiensis kurstaki and vaccina virus sequences, two potential biowarfare agents, as well as interleukin-2 sequences, an immune system modulator that has been used for the diagnosis of HIV.
authors.affiliation: Department of Chemistry, Tufts University, 62 Talbot Avenue, Medford, MA 02155, United States.
authors.forename: Jenny M
authors.initials: JM
authors.lastname: Tam
authors.forename: Linan
authors.initials: L
authors.lastname: Song
authors.forename: David R
authors.initials: DR
authors.lastname: Walt
mesh_terms: D015374:Biosensing Techniques / Q000295:instrumentation; D004247:DNA / Q000032:analysis* / Q000737:chemistry / Q000235:genetics*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D017404:In Situ Hybridization, Fluorescence / Q000295:instrumentation*; D036103:Nanotechnology / Q000295:instrumentation*; D020411:Oligonucleotide Array Sequence Analysis / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013050:Spectrometry, Fluorescence / Q000295:instrumentation*
chemical_list: D004247:DNA