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 language | English |
|---|---|
| Pages (from-to) | 261-268 |
| Number of pages | 8 |
| Journal | ACS Combinatorial Science |
| Volume | 20 |
| Issue number | 5 |
| DOIs | |
| State | Published - 2018.05.14 |
Keywords
- aptamer-based paper strip sensor
- ssDNA aptamer
- Vibrio fischeri
Quacquarelli Symonds(QS) Subject Topics
- Chemistry
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