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Yu S, Dai W, Su C, Milosavic N, Wang Z, Wang X, Zhu Y, He M, Landry DW, Stojanovic MN, Lin Q. An Internally Attached Aptameric Graphene Nanosensor for Sensitive Vasopressin Measurement in Critical Patient Monitoring. ACS Sens 2024. [PMID: 39268764 DOI: 10.1021/acssensors.4c01519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/15/2024]
Abstract
This paper presents an aptameric graphene nanosensor for rapid and sensitive measurement of arginine vasopressin (AVP) toward continuous monitoring of critical care patients. The nanosensor is a field-effect transistor (FET) with monolayer graphene as the conducting channel and is functionalized with a new custom-designed aptamer for specific AVP recognition. Binding between the aptamer and AVP induces a change in the carrier density in the graphene and resulting in measurable changes in FET characteristics for determination of the AVP concentration. The aptamer, based on the natural enantiomer D-deoxyribose, possess optimized kinetic binding properties and is attached at an internal position to the graphene for enhanced sensitivity to low concentrations of AVP. Experimental results show that this aptameric graphene nanosensor is highly sensitive (with a limit of detection of 0.3 pM and a resolution of 0.1 pM) to AVP, and rapidly responsive (within 90 s) to both increasing and decreasing AVP concentration changes. The device is also reversable (within 4%), repeatable (within 4%) and reproducible (within 5%) in AVP measurements.
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Affiliation(s)
- Shifeng Yu
- College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing 400044, China
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
| | - Wenting Dai
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
| | - Chao Su
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
- Department of Power and Energy Engineering, Xian Jiaotong University, Xian, Shaanxi 710049, China
| | - Nenad Milosavic
- Department of Medicine, Columbia University, New York, New York 10032, United States
| | - Ziran Wang
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
| | - Xuejun Wang
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
| | - Yibo Zhu
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
| | - Maogang He
- Department of Power and Energy Engineering, Xian Jiaotong University, Xian, Shaanxi 710049, China
| | - Donald W Landry
- Department of Medicine, Columbia University, New York, New York 10032, United States
| | - Milan N Stojanovic
- Department of Medicine, Columbia University, New York, New York 10032, United States
| | - Qiao Lin
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
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