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Section 1: Publication
Publication Type
Journal Article
Authorship
Zandieh, Mohamad; Luo, Xin; Zhao, Yu; Feng, Chuanliang; Liu, Juewen
Title
Selection of Plastic-Binding DNA Aptamers for Microplastics Detection
Year
2025
Publication Outlet
John Wiley & Sons, Ltd, Angewandte Chemie International Edition, Vol. 64, Iss. 11, e202421438
DOI
ISBN
ISSN
1433-7851
Citation
Zandieh, Mohamad; Luo, Xin; Zhao, Yu; Feng, Chuanliang; Liu, Juewen (2025) Selection of Plastic-Binding DNA Aptamers for Microplastics Detection, John Wiley & Sons, Ltd, Angewandte Chemie International Edition, Vol. 64, Iss. 11, e202421438,
https://doi.org/10.1002/anie.202421438
Abstract
Plastics are critical materials for modern technological applications, yet environmental contamination by microplastics has become a growing concern. In this study, DNA aptamers were isolated for two of the most abundant plastic materials: polyvinylchloride (PVC) and polystyrene (PS). These aptamers contain approximately 90 % cytosine and thymine but only 10 % purine content. Among them, the PVC-1 aptamer binds to PVC with a six-fold higher capacity than a random sequenced DNA. Among the tested plastic materials, PVC and PS exhibited the highest specific binding capacity. Using fluorophore-labeled PVC-1 aptamer, PS/PVC microplastics as low as 1 mg were detected, and the aptamer was selective for microplastics over other environmentally relevant materials, such as silica. Molecular dynamics simulations indicated that the aptamer attempted to maximize contact with the plastic surface for adsorption. This plastic-binding aptamer is expected to find applications in environmental monitoring and has fundamental implications for surface-binding aptamers.
Plain Language Summary
Section 2: Additional Information
Program Affiliations
Project Affiliations
Submitters
Publication Stage
Published
Theme
Presentation Format
Additional Information
Keywords: biosensors; microplastics; aptamers; SELEX; DNA