The Characterization of Binding between Aptamer and Bisphenol A and Developing Electrochemical Aptasensors for Bisphenol A with Rationally Engineered Aptamers
文献类型：期刊论文
| 作者 | Liu, Liying; Yu, Hao ; Zhao, Qiang
|
| 刊名 | BIOSENSORS-BASEL
 |
| 出版日期 | 2022 |
| 卷号 | 12期号:11页码:913-1-13 |
| 关键词 | bisphenol A aptamer ITC electrochemical sensor binding affinity |
| 英文摘要 | Bisphenol A (BPA) is widely used in the manufacture of polycarbonate and epoxy-resinbased products, and BPA contamination often happens in a variety of types of environment and food stuffs. BPA can cause many harmful effects to health due to its high toxicity. The rapid detection of BPA is of great significance in environmental monitoring and food safety. Nucleic acid aptamers show advantages in biosensors due to good chemical stability, the ease of labeling functional groups, and target binding that induces conformation change. Here, we performed a thorough characterization of the binding performance of one 60-nt anti-BPA DNA aptamer with isothermal titration calorimetry (ITC). We found the crucial region of the aptamer sequence for affinity binding with BPA, and the aptamer was able to be truncated to 29-nt DNA without losing affinity. We then developed a simple reagent-less electrochemical aptamer-based sensor for rapid BPA detection with this engineered aptamer. The truncated aptamer with a redox tag methylene blue (MB) was immobilized on a gold electrode. BPA-binding induced the conformation change of the MB-labeled aptamer, moving the MB close to the electrode surface and causing a significant current increase in MB in square wave voltammetry (SWV). Under optimized conditions, we achieved the quantitative detection of BPA with a detection limit of BPA at 0.1 mu M. This sensor showed quick response to BPA and could be regenerated by washing with deionized water. This sensor was selective, and it allowed detecting BPA in complex samples, showing its potential in practice. This study will help in further applications of the aptamers of BPA. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/48519]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 作者单位 | 1.University of Chinese Academy of Sciences, CAS 2.Chinese Academy of Sciences 3.Research Center for Eco-Environmental Sciences (RCEES) |
| 推荐引用方式 GB/T 7714 | Liu, Liying,Yu, Hao,Zhao, Qiang. The Characterization of Binding between Aptamer and Bisphenol A and Developing Electrochemical Aptasensors for Bisphenol A with Rationally Engineered Aptamers[J]. BIOSENSORS-BASEL,2022,12(11):913-1-13. |
| APA | Liu, Liying,Yu, Hao,&Zhao, Qiang.(2022).The Characterization of Binding between Aptamer and Bisphenol A and Developing Electrochemical Aptasensors for Bisphenol A with Rationally Engineered Aptamers.BIOSENSORS-BASEL,12(11),913-1-13. |
| MLA | Liu, Liying,et al."The Characterization of Binding between Aptamer and Bisphenol A and Developing Electrochemical Aptasensors for Bisphenol A with Rationally Engineered Aptamers".BIOSENSORS-BASEL 12.11(2022):913-1-13. |
入库方式： OAI收割
来源：生态环境研究中心
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