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Single quantum dot-based multiplexed point mutation detection by gap ligase chain reaction

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We propose an assay which combines the specificity of gap-filling ligation chain reaction (Gap-LCR) and the sensitivity of quantum dot-single molecule spectroscopy (QD-SMS) to detect point mutation from genomic DNA without pre-PCR amplification. Mutation variant-specific ligation products are generated by Gap-LCR and captured by quantum dot to form DNA-QD nanocomplexes that are detected by SMS. SMS enables measurement of fluorescent bursts emitted from individual molecules, eliminating the need of separation of ligation products. The proposed assay is capable of detecting zeptomoles of KRAS codon 12 mutation variants and allows for detection of multiple types of mutation variants from a single experiment.

Original languageEnglish (US)
Title of host publication15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011
Pages1779-1781
Number of pages3
StatePublished - 2011
Event15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011 - Seattle, WA, United States
Duration: Oct 2 2011Oct 6 2011

Publication series

Name15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011
Volume3

Conference

Conference15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011
Country/TerritoryUnited States
CitySeattle, WA
Period10/2/1110/6/11

Keywords

  • Gap ligase chain reaction
  • Mutation detection
  • Quantum dot
  • Single molecule spectroscopy

ASJC Scopus subject areas

  • Control and Systems Engineering

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