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Aptamer-Based Paper Strip Sensor for Detecting Vibrio fischeri

  • Woo Ri Shin
  • , Simranjeet Singh Sekhon
  • , Sung Keun Rhee
  • , Jung Ho Ko
  • , Ji Young Ahn*
  • , Jiho Min
  • , Yang Hoon Kim
  • *Corresponding author for this work
  • Chungbuk National University
  • Western University of Health Sciences

Research output: Contribution to journalJournal articlepeer-review

Abstract

Aptamer-based paper strip sensor for detecting Vibrio fischeri was developed. Our method was based on the aptamer sandwich assay between whole live cells, V. fischeri and DNA aptamer probes. Following 9 rounds of Cell-SELEX and one of the negative-SELEX, V. fischeri Cell Aptamer (VFCA)-02 and -03 were isolated, with the former showing approximately 10-fold greater avidity (in the subnanomolar range) for the target cells when arrayed on a surface. The colorimetric response of a paper sensor based on VFCA-02 was linear in the range of 4 × 101 to 4 × 105 CFU/mL of target cell by using scanning reader. The linear regression correlation coefficient (R2) was 0.9809. This system shows promise for use in aptamer-conjugated gold nanoparticle probes in paper strip format for in-field detection of marine bioindicating bacteria.

Original languageEnglish
Pages (from-to)261-268
Number of pages8
JournalACS Combinatorial Science
Volume20
Issue number5
DOIs
StatePublished - 2018.05.14

Keywords

  • aptamer-based paper strip sensor
  • ssDNA aptamer
  • Vibrio fischeri

Quacquarelli Symonds(QS) Subject Topics

  • Chemistry

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