Development of a ssDNA aptamer system with reduced graphene oxide (rGO) to detect nonylphenol ethoxylate in domestic detergent.
J Mol Recognit
; 32(3): e2764, 2019 03.
Article
en En
| MEDLINE
| ID: mdl-30251354
Endocrine-disrupting chemicals are a major public health problem throughout the world. In the human body, these compounds functionalize the same as sexual hormones, inducing precocious puberty, gynecomastia, etc. To help prevent this occurrence, a simple detection system is needed. In this study, a nonylphenol ethoxylate (NPE)-specific aptamer was selected by reduced graphene oxide-systematic evolution of ligands by exponential enrichment. A random ssDNA library was incubated with rGO for adsorption, followed by elution with the target molecule. As a result of screening, a DNA aptamer was found that specifically bounds to the target with high binding affinity (Kd = 100.9 ± 13.2 nM) and had a low limit of detection (LOD = 696 pM). Furthermore, this NPE-binding aptamer bounds selectively to the target. Characterization of the aptamer was confirmed by measuring the fluorescence signal recovery from rGO. In addition, detection of NPE was performed with several water samples, and the detection accuracy was 100 ± 10%. From these results, we expect that this aptamer could be applied to an on-site detection system for NPE in industrial sites or domestic fields.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
ADN de Cadena Simple
/
Detergentes
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Glicoles de Etileno
/
Grafito
Límite:
Humans
Idioma:
En
Revista:
J Mol Recognit
Asunto de la revista:
BIOLOGIA MOLECULAR
Año:
2019
Tipo del documento:
Article
Pais de publicación:
Reino Unido