Multiplexed detection of oligonucleotides with biobarcoded gold nanoparticle probes.

Research output: Contribution to journalArticle

2 Citations (Scopus)


Applications in a variety of fields rely on the high-throughput ultrasensitive and multiplexed detection of oligonucleotides. However, the conventional microarray-based techniques that employ fluorescent dyes are hampered by several limitations; they require target amplification, fluorophore labeling, and complicated instrumentation, while the fluorophore-labeled species themselves exhibit slow binding kinetics, photo-bleaching effects, and overlapping spectral profiles. Among the emerging nanomaterials that are being used to solve these problems, oligonucleotide-gold nanoparticle conjugates (Oligo-AuNPs) have recently been highlighted due to their unique chemical and physical properties. In this chapter, a detection scheme for oligonucleotides that utilize Oligo-AuNPs is evaluated with multiple oligonucleotide targets. This scheme takes advantage of the sharp melting transitions, intense optical properties, catalytic properties, enhanced binding properties, and the programmable assembly/disassembly of Oligo-AuNPs.

Original languageEnglish
Pages (from-to)17-31
Number of pages15
JournalMethods in molecular biology (Clifton, N.J.)
Publication statusPublished - 2011

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics

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