Label-free microarray imaging for direct detection of DNA hybridization and single-nucleotide mismatches (Articolo in rivista)

Type
Label
  • Label-free microarray imaging for direct detection of DNA hybridization and single-nucleotide mismatches (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.bios.2009.12.032 (literal)
Alternative label
  • Ozkumur E.; Ahn S., Yalcin A.; Lopez C.A.; Cevik E.; Irani R.J.; Delisi C.; Chiari M.; Unlu M.S; (2010)
    Label-free microarray imaging for direct detection of DNA hybridization and single-nucleotide mismatches
    in Biosensors & bioelectronics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Ozkumur E.; Ahn S., Yalcin A.; Lopez C.A.; Cevik E.; Irani R.J.; Delisi C.; Chiari M.; Unlu M.S; (literal)
Pagina inizio
  • 1789 (literal)
Pagina fine
  • 1795 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 25 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1. Boston Univ, Dept Elect & Comp Engn, Boston, MA 02215 USA 2. Boston Univ, Dept Biomed Engn, Boston, MA 02215 USA 3. Boston Univ, Ctr Adv Genom Technol, Boston, MA 02215 USA 4. CNR, ICRM, I-20133 Milan, Italy (literal)
Titolo
  • Label-free microarray imaging for direct detection of DNA hybridization and single-nucleotide mismatches (literal)
Abstract
  • A novel method is proposed for direct detection of DNA hybridization on microarrays. Optical interferometry is used for label-free sensing of biomolecular accumulation on glass surfaces, enabling dynamic detection of interactions. Capabilities of the presented method are demonstrated by high-throughput sensing of solid-phase hybridization of oligonucleotides. Hybridization of surface immobilized probes with 20 base pair-long target oligonucleotides was detected by comparing the label-free microarray images taken before and after hybridization. Through dynamic data acquisition during denaturation by washing the sample with low ionic concentration buffer, melting of duplexes with a single-nucleotide mismatch was distinguished from perfectly matching duplexes with high confidence interval (>97%). The presented technique is simple, robust, and accurate, and eliminates the need of using labels or secondary reagents to monitor the oligonucleotide hybridization. (literal)
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