Knowledge Management System Of Shanghai Institute of Applied Physics, CAS
| DNA Nanostructure-Decorated Surfaces for Enhanced Aptamer-Target Binding and Electrochemical Cocaine Sensors | |
| Wen, YL; Pei, H; Wan, Y; Su, Y; Huang, Q（黄庆）; Song, SP（宋世平）; Fan, CH（樊春海） | |
| 2011 | |
| Source Publication | ANALYTICAL CHEMISTRY
 |
| ISSN | 0003-2700 |
| Volume | 83Issue:19Pages:7418 |
| Abstract | The sensitivity of aptamer-based electrochemical sensors is often limited by restricted target accessibility and surface-induced perturbation of the aptamer structure, which arise from imperfect packing of probes on the heterogeneous and locally crowded surface. In this study, we have developed an ultrasensitive and highly selective electrochemical aptamer-based cocaine sensor (EACS), based on a DNA nanotechnology-based sensing platform. We have found that the electrode surface decorated with an aptamer probe-pendant tetrahedral DNA nanostructure greatly facilitates cocaine-induced fusion of the split anticocaine aptamer. This novel design leads to a sensitive cocaine sensor with a remarkably low detection limit of 33 nM. It is also important that the tetrahedra-decorated surface is protein-resistant, which not only suits the enzyme-based signal amplification scheme employed in this work, but ensures high selectivity of this sensor when deployed in sera or other adulterated samples. |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 应物所项目组 |
| WOS ID | WOS:000295303600027 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/12856 |
| Collection | 中科院上海应用物理研究所2011-2020年 |
| Recommended Citation GB/T 7714 | Wen, YL,Pei, H,Wan, Y,et al. DNA Nanostructure-Decorated Surfaces for Enhanced Aptamer-Target Binding and Electrochemical Cocaine Sensors[J]. ANALYTICAL CHEMISTRY,2011,83(19):7418. |
| APA | Wen, YL.,Pei, H.,Wan, Y.,Su, Y.,Huang, Q.,...&Fan, CH.(2011).DNA Nanostructure-Decorated Surfaces for Enhanced Aptamer-Target Binding and Electrochemical Cocaine Sensors.ANALYTICAL CHEMISTRY,83(19),7418. |
| MLA | Wen, YL,et al."DNA Nanostructure-Decorated Surfaces for Enhanced Aptamer-Target Binding and Electrochemical Cocaine Sensors".ANALYTICAL CHEMISTRY 83.19(2011):7418. |
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