Issue 41, 2019

Aptamer–gold nanoparticle conjugates for the colorimetric detection of arboviruses and vector mosquito species

Abstract

The real-time, colorimetric detection of analytes via aptamer–gold nanoparticle technology has proven to be an important, emerging technique within the medical field. Of global health importance, the ability to detect vector mosquito species, such as the Aedes (Ae.) aegypti mosquito, and transmitted arboviruses, such as Zika virus, is paramount to mosquito control and surveillance efforts. Herein, we describe the detection of Ae. aegypti salivary protein for vector identification and the detection of Zika virus to assess mosquito infection status by aptamer–gold nanoparticle conjugates. Key to optimization of these diagnostics were gold nanoparticle capping agents and aptamer degree of labelling (i.e., the amount of aptamers per gold nanoparticle). In the present study, detection was achieved for as little as 10 ng Ae. aegypti salivary protein and 1.0 × 105 PFU live Zika virus. These aptamer–gold nanoparticle conjugate diagnostics could one day prove to be useful as deployable nano-based biosensors that provide easy-to-read optical read outs through a straightforward red-to-blue colour change either within a diagnostic solution or atop a card/membrane-based biosensor.

Graphical abstract: Aptamer–gold nanoparticle conjugates for the colorimetric detection of arboviruses and vector mosquito species

Supplementary files

Article information

Article type
Paper
Submitted
18 mar 2019
Accepted
23 iyl 2019
First published
31 iyl 2019
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2019,9, 23752-23763

Aptamer–gold nanoparticle conjugates for the colorimetric detection of arboviruses and vector mosquito species

A. Bosak, N. Saraf, A. Willenberg, M. W. C. Kwan, B. W. Alto, G. W. Jackson, R. H. Batchelor, T. D. Nguyen-Huu, V. Sankarapani, G. D. Parks, S. Seal and B. J. Willenberg, RSC Adv., 2019, 9, 23752 DOI: 10.1039/C9RA02089F

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