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Updated: Jun 22, 2026
An Aptamer-based Sensor for Unchelated GadoliniumIII
Published on: January 9, 2017
A label-free G-quadruplex aptamer fluorescent aptasensor for visual and real-time kanamycin detection in lake and
Yingnan Ma1, Gang Shen2, Runzhi Li1
1Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing 100044, China. wcz@bucea.edu.cn.
Abstract:
Antibiotic abuse is considered a serious problem affecting human health, necessitating that great attention be paid to explore robust, simple and sensitive methods for rapid evaluation. In this paper, we developed a fluorescent aptasensor for visual and real-time kanamycin detection by taking advantage of the label-free strategy based on H-aggregate disassembly of a chiral cyanine dye induced by a G-quadruplex aptamer. The good sensitivity and selectivity enabled this aptasensor to have a detection limit as low as 43 nM and have high specificity for kanamycin recognition. Furthermore, this assay was successfully applied for the detection of kanamycin in lake water and urine with excellent recoveries.
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