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Discriminative intracellular and extracellular ATP detection based on magnetically controlled antimicrobial peptide

文献类型：期刊论文

作者Wang, Yingwen1,2,4,5; Zhang, Dun2,4,5; Zeng, Yan2,4,5; Ye, Xiangyi2,4,5; Sun, Yan2,4,5; Zhou, Weimin3; Qi, Peng2,4,5
刊名SENSORS AND ACTUATORS B-CHEMICAL
出版日期2021-05-01
卷号334页码:10
关键词ATP detection Intracellular Extracellular Aptasensor Antimicrobial peptides
DOI10.1016/j.snb.2021.129609
通讯作者Zhang, Dun(zhangdun@qdio.ac.cn) ; Qi, Peng(qipeng@qdio.ac.cn)
英文摘要Extracellular free adenosine triphosphate (ATP) is often encountered as an interferent in the detection of intracellular ATP, especially in biofilm systems. To resolve this problem, in this study, a novel impedimetric aptasensor was designed for the discriminative detection of intracellular and extracellular ATP using antimicrobial peptide-functionalized magnetic particles (M-AMPs). Successive fabrication of reduced graphene sheets (rGSs) and gold nano-clusters (Au NCs) on a glassy carbon electrode was conducted by simple electrodeposition methods to achieve improved detection sensitivity. Single-stranded aptamers were attached to the surface of Au NCs for selective ATP binding, and electrochemical impedance spectroscopy was conducted to analyze the change of surface state induced by ATP binding. For discriminative intracellular and extracellular ATP detection, magnetically controlled M-AMPs were introduced into the detection system for mild and rapid bacterial disintegration. In bacterial samples, the M-AMPs were firstly constrained by a magnetic field, and extracellular ATP was selectively bound to the prepared aptasensor, leading to increased impedance response. Thereafter, the magnetic field was shut down to liberate the M-AMPs for cell disruption, and the released intracellular ATP was determined by the further impedance increasement. The results demonstrated that the proposed aptasensor exhibited excellent sensitivity and selectivity, with a wide linear range from 1 nM to 100 nM and a detection limit of 0.65 nM. Remarkably, this electrochemical aptasensor provided a convenient and label-free approach for discriminative intracellular and extracellular ATP detection, and the detection reliability was verified in various bacterial samples and E. coli biofilms.
资助项目National Natural Science Foundation of China[41876101] ; National Natural Science Foundation of China[41906037] ; Nantong Scientific Plan Foundation[2020NT04]
WOS研究方向Chemistry ; Electrochemistry ; Instruments & Instrumentation
语种英语
WOS记录号WOS:000632945700003
出版者ELSEVIER SCIENCE SA
源URL[http://ir.qdio.ac.cn/handle/337002/170320]  
专题海洋研究所_海洋腐蚀与防护研究发展中心
通讯作者Zhang, Dun; Qi, Peng
作者单位1.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
2.Chinese Acad Sci, Ctr Ocean Mega Sci, 7 Nanhai Rd, Qingdao 266071, Peoples R China
3.Univ Sci & Technol Liaoning, Key Lab Energy Mat & Electrochem Res Liaoning Pro, Anshan 114051, Peoples R China
4.Qingdao Natl Lab Marine Sci & Technol, Open Studio Marine Corros & Protect, 1 Wenhai Rd, Qingdao 266237, Peoples R China
5.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Yingwen,Zhang, Dun,Zeng, Yan,et al. Discriminative intracellular and extracellular ATP detection based on magnetically controlled antimicrobial peptide[J]. SENSORS AND ACTUATORS B-CHEMICAL,2021,334:10.
APA Wang, Yingwen.,Zhang, Dun.,Zeng, Yan.,Ye, Xiangyi.,Sun, Yan.,...&Qi, Peng.(2021).Discriminative intracellular and extracellular ATP detection based on magnetically controlled antimicrobial peptide.SENSORS AND ACTUATORS B-CHEMICAL,334,10.
MLA Wang, Yingwen,et al."Discriminative intracellular and extracellular ATP detection based on magnetically controlled antimicrobial peptide".SENSORS AND ACTUATORS B-CHEMICAL 334(2021):10.

入库方式： OAI收割

来源：海洋研究所

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