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Wang X, Liu Y, Cheng H, Ouyang X. Surface Wettability for Skin-Interfaced Sensors and Devices. ADVANCED FUNCTIONAL MATERIALS 2022; 32:2200260. [PMID: 36176721 PMCID: PMC9514151 DOI: 10.1002/adfm.202200260] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Indexed: 05/05/2023]
Abstract
The practical applications of skin-interfaced sensors and devices in daily life hinge on the rational design of surface wettability to maintain device integrity and achieve improved sensing performance under complex hydrated conditions. Various bio-inspired strategies have been implemented to engineer desired surface wettability for varying hydrated conditions. Although the bodily fluids can negatively affect the device performance, they also provide a rich reservoir of health-relevant information and sustained energy for next-generation stretchable self-powered devices. As a result, the design and manipulation of the surface wettability are critical to effectively control the liquid behavior on the device surface for enhanced performance. The sensors and devices with engineered surface wettability can collect and analyze health biomarkers while being minimally affected by bodily fluids or ambient humid environments. The energy harvesters also benefit from surface wettability design to achieve enhanced performance for powering on-body electronics. In this review, we first summarize the commonly used approaches to tune the surface wettability for target applications toward stretchable self-powered devices. By considering the existing challenges, we also discuss the opportunities as a small fraction of potential future developments, which can lead to a new class of skin-interfaced devices for use in digital health and personalized medicine.
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Affiliation(s)
- Xiufeng Wang
- School of Materials Science and Engineering, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Yangchengyi Liu
- School of Materials Science and Engineering, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Huanyu Cheng
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802, USA
| | - Xiaoping Ouyang
- School of Materials Science and Engineering, Xiangtan University, Xiangtan, Hunan 411105, China
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2
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Chin LK, Li H, Choi JH, Iwamoto Y, Oh J, Min J, Beak SK, Yoo D, Castro CM, Lee D, Im H. Hydrogel Stamping for Rapid, Multiplexed, Point-of-Care Immunostaining of Cells and Tissues. ACS APPLIED MATERIALS & INTERFACES 2022; 14:27613-27622. [PMID: 35671240 DOI: 10.1021/acsami.2c05071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In the era of precision oncology, multicolor fluorescence imaging has become a core technology for multiplexed molecular analysis of cellular and tissue specimens. However, conventional solution-based staining is labor-intensive and time-consuming and requires considerable expertise to yield optimal results, which creates difficulties for employing this technology in resource-limited settings. Here, we report a new immunostaining method based on hydrogel stamping, which is simple, fast, easy to use, and reproducible. We showed that a hydrophilic hydrogel stamp could effectively transfer fluorescent antibodies to targets and withdraw an excess solution when the reaction is completed, obviating the need for extra washing. This unique property allows for quality immunostaining in 5 min for cells using one-eighth of antibody consumption compared to the conventional solution-based method. Furthermore, we implemented fluorescence quenching and immunocycling with hydrogel staining for multiplexed analysis of 9 protein markers at a single cell level. Finally, we applied the immunocycling method to human breast cancer tissue samples and showed quality immunostaining over a large area (∼2 cm2) in 30 min for molecular subtyping of breast cancer. The hydrogel immunostaining could open new opportunities for rapid, automated, and multiplexed profiling in compact point-of-care systems for molecular cancer diagnosis.
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Affiliation(s)
- Lip Ket Chin
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge Street, CPZN 5206, Boston, Massachusetts 02114, United States
- Department of Electrical Engineering, City University of Hong Kong, Kowloon 999077, Hong Kong SAR
| | - Huiyan Li
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge Street, CPZN 5206, Boston, Massachusetts 02114, United States
- School of Engineering, University of Guelph, 50 Stone Road East, Guelph N1G2W1, Canada
| | - Jae-Hyeok Choi
- Noul Co. Limited, Gyeonggi-do, Yongin 16942, Republic of Korea
| | - Yoshiko Iwamoto
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge Street, CPZN 5206, Boston, Massachusetts 02114, United States
| | - Juhyun Oh
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge Street, CPZN 5206, Boston, Massachusetts 02114, United States
| | - Jouha Min
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge Street, CPZN 5206, Boston, Massachusetts 02114, United States
| | - Suk Kyung Beak
- Noul Co. Limited, Gyeonggi-do, Yongin 16942, Republic of Korea
| | - Dahyeon Yoo
- Noul Co. Limited, Gyeonggi-do, Yongin 16942, Republic of Korea
| | - Cesar M Castro
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge Street, CPZN 5206, Boston, Massachusetts 02114, United States
- Cancer Center, Massachusetts General Hospital, Boston, Massachusetts 02114, United States
| | - Dongyoung Lee
- Noul Co. Limited, Gyeonggi-do, Yongin 16942, Republic of Korea
| | - Hyungsoon Im
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge Street, CPZN 5206, Boston, Massachusetts 02114, United States
- Department of Radiology, Massachusetts General Hospital, Boston, Massachusetts 02114, United States
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3
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Li Z, Hu R, Ye S, Song J, Liu L, Qu J, Song W, Cao C. High-Performance Heterogeneous Thermocatalysis Caused by Catalyst Wettability Regulation. Chemistry 2022; 28:e202104588. [PMID: 35253287 DOI: 10.1002/chem.202104588] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Indexed: 01/11/2023]
Abstract
Catalyst wettability regulation has emerged as an attractive approach for high catalytic performance for the past few years. By introducing appropriate wettability, the molecule diffusion of reactants and products can be enhanced, leading to high activity. Besides this, undesired molecules are isolated for high selectivity of target products and long-term stability of catalyst. Herein, we summarize wettability-induced high-performance heterogeneous thermocatalysis in recent years, including hydrophilicity, hydrophobicity, hybrid hydrophilicity-hydrophobicity, amphiphilicity, and superaerophilicity. Relevant reactions are further classified and described according to the reason for the performance improvement. It should be pointed out that studies of utilizing superaerophilicity to improve heterogeneous thermocatalytic performance have been included for the first time, so this is a comparatively comprehensive review in this field as yet.
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Affiliation(s)
- Zhaohua Li
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China.,Beijing National Laboratory for Molecular Sciences CAS Research/Education Center for Excellence in Molecular Sciences CAS Key Laboratory of Molecular Nanostructure and Nanotechnology Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Rui Hu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Shuai Ye
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Jun Song
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Liwei Liu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Junle Qu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China.,National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409, Moscow, Russian Federation
| | - Weiguo Song
- Beijing National Laboratory for Molecular Sciences CAS Research/Education Center for Excellence in Molecular Sciences CAS Key Laboratory of Molecular Nanostructure and Nanotechnology Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Changyan Cao
- Beijing National Laboratory for Molecular Sciences CAS Research/Education Center for Excellence in Molecular Sciences CAS Key Laboratory of Molecular Nanostructure and Nanotechnology Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
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4
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Zhu Q, Yang Y, Gao H, Xu LP, Wang S. Bioinspired superwettable electrodes towards electrochemical biosensing. Chem Sci 2022; 13:5069-5084. [PMID: 35655548 PMCID: PMC9093108 DOI: 10.1039/d2sc00614f] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 03/22/2022] [Indexed: 11/30/2022] Open
Abstract
Superwettable materials have attracted much attention due to their fascinating properties and great promise in several fields. Recently, superwettable materials have injected new vitality into electrochemical biosensors. Superwettable electrodes exhibit unique advantages, including large electrochemical active areas, electrochemical dynamics acceleration, and optimized management of mass transfer. In this review, the electrochemical reaction process at electrode/electrolyte interfaces and some fundamental understanding of superwettable materials are discussed. Then progress in different electrodes has been summarized, including superhydrophilic, superhydrophobic, superaerophilic, superaerophobic, and superwettable micropatterned electrodes, electrodes with switchable wettabilities, and electrodes with Janus wettabilities. Moreover, we also discussed the development of superwettable materials for wearable electrochemical sensors. Finally, our perspective for future research is presented.
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Affiliation(s)
- Qinglin Zhu
- Beijing Key Laboratory for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing Beijing 100083 P. R. China
| | - Yuemeng Yang
- Beijing Key Laboratory for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing Beijing 100083 P. R. China
| | - Hongxiao Gao
- Beijing Key Laboratory for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing Beijing 100083 P. R. China
| | - Li-Ping Xu
- Beijing Key Laboratory for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing Beijing 100083 P. R. China
| | - Shutao Wang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 China
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Constante G, Apsite I, Auerbach P, Aland S, Schönfeld D, Pretsch T, Milkin P, Ionov L. Smart Mechanically Tunable Surfaces with Shape Memory Behavior and Wetting-Programmable Topography. ACS APPLIED MATERIALS & INTERFACES 2022; 14:20208-20219. [PMID: 35438953 DOI: 10.1021/acsami.2c01078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
This paper reports for the first time the fabrication and investigation of wetting properties of structured surfaces formed by lamellae with an exceptionally high aspect ratio of up to 57:1 and more. The lamellar surfaces were fabricated using a polymer with tunable mechanical properties and shape-memory behavior. It was found that wetting properties of such structured surfaces depend on temperature, and thermal treatment history-structured surfaces are wetted easier at elevated temperature or after cooling to room temperature when the polymer is soft because of the easier deformability of lamellae. The shape of lamellae deformed by droplets can be temporarily fixed at low temperature and remains fixed upon heating to room temperature. Heating above the transition temperature of the shape-memory polymer restores the original shape. The high aspect ratio allows tuning of geometry not only manually, as it is done in most works reported previously but can also be made by a liquid droplet and is controlled by temperature. This behavior opens new opportunities for the design of novel smart elements for microfluidic devices such as smart valves, whose state and behavior can be switched by thermal stimuli: valves that can or cannot be opened that are able to close or can be fixed in an open or closed states.
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Affiliation(s)
- Gissela Constante
- Faculty of Engineering Sciences, University of Bayreuth, Ludwig Thoma Strasse 36A, 95447 Bayreuth, Germany
| | - Indra Apsite
- Faculty of Engineering Sciences, University of Bayreuth, Ludwig Thoma Strasse 36A, 95447 Bayreuth, Germany
| | - Paul Auerbach
- Fakultät Informatik/Mathematik, Hochschule für Technik und Wirtschaft Dresden, 01069 Dresden, Germany
| | - Sebastian Aland
- Fakultät Informatik/Mathematik, Hochschule für Technik und Wirtschaft Dresden, 01069 Dresden, Germany
- Fakultät Mathematik und Informatik, Technische Universität Bergakademie Freiberg, 09599 Freiberg, Germany
| | - Dennis Schönfeld
- Fraunhofer Institute for Applied Polymer Research IAP, Geiselbergstrasse 69, 14476 Postdam, Germany
| | - Thorsten Pretsch
- Fraunhofer Institute for Applied Polymer Research IAP, Geiselbergstrasse 69, 14476 Postdam, Germany
| | - Pavel Milkin
- Faculty of Engineering Sciences, University of Bayreuth, Ludwig Thoma Strasse 36A, 95447 Bayreuth, Germany
| | - Leonid Ionov
- Faculty of Engineering Sciences, University of Bayreuth, Ludwig Thoma Strasse 36A, 95447 Bayreuth, Germany
- Bavarian Polymer Institute, University of Bayreuth, 95447 Bayreuth, Germany
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6
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Portable electrochemical micro-workstation platform for simultaneous detection of multiple Alzheimer's disease biomarkers. Mikrochim Acta 2022; 189:91. [PMID: 35129691 DOI: 10.1007/s00604-022-05199-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 01/24/2022] [Indexed: 02/03/2023]
Abstract
Alzheimer's disease, as a most prevalent type of dementia, is quickly becoming one of the most expensive, lethal, and burdening diseases of this century. Though there are still no efficient therapies, early diagnosis and intervention are important directive significance to clinical works. Here, we develop a portable electrochemical micro-workstation platform consisting of an electrochemical micro-workstation and integrated electrochemical microarray for simultaneously detecting multiple AD biomarkers including Aβ40, Aβ42, T-tau, and P-tau181 in serum. The integrated electrochemical microarray is mainly used for droplet sample manipulation and signal generation. The micro-workstation can regulate signals and transfer the signals to a smartphone by Bluetooth embedded inside. This portable electrochemical micro-workstation platform exhibits excellent analysis performance. The LODs for Aβ40, Aβ42, T-tau, and P-tau181 are 0.125 pg/mL, 0.089 pg/mL, 0.142 pg/mL, and 0.176 pg/mL, respectively, which satisfies the needs of detecting AD biomarkers in serum. The combination of portable micro-workstation and integrated electrochemical microarray provides a promising strategy for the early diagnosis of Alzheimer's disease and personal healthcare.
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7
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Yang YJ, Gao ZF. Bio-inspired Superwettable Surface for the Detection of Cancer Biomarker: A Mini Review. Technol Cancer Res Treat 2022; 21:15330338221110670. [PMID: 35790461 PMCID: PMC9340408 DOI: 10.1177/15330338221110670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Inspired by nature, superwettable material-based biosensors have aroused wide interests due to their potential in cancer biomarker detection. This mini review mainly summarized the superwettable materials as novel biosensing substrates for the development of evaporation-induced enrichment-based signal amplification and visual biosensing method. Biosensing applications based on the superhydrophobic surfaces, superwettable micropatterned surfaces, and slippery lubricant-infused porous surfaces for various cancer biomarker detections were described in detail. Finally, an insight of remaining challenges and perspectives of superwettable biosensor is proposed.
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Affiliation(s)
- Yun Jun Yang
- Advanced Research Institute for Multidisciplinary Science, 12689Qilu University of Technology (Shandong Academy of Sciences), Jinan, People's Republic of China
| | - Zhong Feng Gao
- Advanced Materials Institute, 12689Qilu University of Technology (Shandong Academy of Sciences), Jinan, People's Republic of China.,Collaborative Innovation Center of Tumor Marker Detection Technology, Equipment and Diagnosis-Therapy Integration in Universities of Shandong, Shandong Provincial Key Laboratory of Detection Technology for Tumor Markers, College of Chemistry and Chemical Engineering, 165082Linyi University, Linyi, People's Republic of China
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8
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Wu M, Wang X, Niu G, Zhao Z, Zheng R, Liu Z, Zhao Z, Duan Y. Ultrasensitive and Simultaneous Detection of Multielements in Aqueous Samples Based on Biomimetic Array Combined with Laser-Induced Breakdown Spectroscopy. Anal Chem 2021; 93:10196-10203. [PMID: 34270226 DOI: 10.1021/acs.analchem.1c01484] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ultrasensitive detection of metallic elements in liquids has attracted considerable attention in fields such as environmental pollution monitoring and drinking water quality control. Hence, it is of great significance to develop a sensitive and simultaneous detection strategy for multiple metal elements in liquid. Laser-induced breakdown spectroscopy (LIBS) technology shows unique advantages because of its simple, rapid, and real-time in situ detection, but the laser energy will be greatly attenuated in the liquids; thus, the sensitivity of LIBS for direct detection of metal elements in liquid samples will decrease sharply. In this study, inspired by the structure of Stenocara beetle's back, a superhydrophobic biomimetic interface with hydrophilic array was prepared for enriching low-concentration targets into detection regions, and the biomimetic array LIBS (BA-LIBS) was successfully established. The ultrasensitive and simultaneous detection of nine metal elements in drinking water was realized based on the effective enrichment method. The limits of detection of the nine metal elements in mixed solution ranged from 8.3 ppt to 13.49 ppb. With these excellent properties, this facile and ultrasensitive BA-LIBS strategy might provide a new idea for the prevention and control of metal hazards in the liquid environment.
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Affiliation(s)
- Mengfan Wu
- Research Center of Analytical Instrumentation, School of Mechanical Engineering, Sichuan University, Chengdu 610065, China.,College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Xu Wang
- Research Center of Analytical Instrumentation, School of Mechanical Engineering, Sichuan University, Chengdu 610065, China
| | - Guanghui Niu
- Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V., Dortmund 44139, Germany
| | - Zhao Zhao
- College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Ruiqin Zheng
- Research Center of Analytical Instrumentation, School of Mechanical Engineering, Sichuan University, Chengdu 610065, China
| | - Zhuo Liu
- School of Aeronautics and Astronautics, Sichuan University, Chengdu 610065, China
| | - Zhongjun Zhao
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Yixiang Duan
- Research Center of Analytical Instrumentation, School of Mechanical Engineering, Sichuan University, Chengdu 610065, China.,College of Life Sciences, Sichuan University, Chengdu 610065, China
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Wang H, Zhang J, Wang D, Wang Z, Chen Y, Feng X. Flexible triphase enzyme electrode based on hydrophobic porous PVDF membrane for high-performance bioassays. Biosens Bioelectron 2021; 183:113201. [PMID: 33812291 DOI: 10.1016/j.bios.2021.113201] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Revised: 03/13/2021] [Accepted: 03/23/2021] [Indexed: 01/13/2023]
Abstract
Flexible bioassays based on oxidase-catalyzed and electrocatalytic cascade reactions have been widely reported. However, the fluctuant oxygen level and high anodic potential restricts the detection accuracy. To overcome these challenges, we report here a flexible triphase enzyme electrode by assembling an oxidase enzyme layer and Pt electrocatalysts onto a carbon nanotube film/porous polyvinylidene fluoride hydrophobic substrate. Such a flexible enzyme electrode has an air-liquid-solid triphase reaction zone where oxygen level is air phase dependent (constant and sufficient high), which stabilized the oxidase kinetics and enabled the cathodic measurement of enzymatic product H2O2 with minimum interferents caused from oxygen level fluctuation and many oxidizable species in analyte solution. Furthermore, the flexible triphase enzyme electrode exhibited good mechanical stability even after being bent over 600 times and an excellent air permeability, which are crucial to wearable devices that require long-term skin contact.
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Affiliation(s)
- Haili Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, PR China
| | - Jun Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, PR China.
| | - Dandan Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, PR China
| | - Zhaohong Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, PR China
| | - Yangru Chen
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, PR China
| | - Xinjian Feng
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, PR China.
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10
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Paper-based electrochemical sensors with reduced graphene nanoribbons for simultaneous detection of sulfamethoxazole and trimethoprim in water samples. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.114985] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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11
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Affiliation(s)
- Hai Zhu
- Engineering Research Center of Nano‐Geomaterials of Ministry of Education Faculty of Materials Science and Chemistry China University of Geosciences Wuhan China
| | - Yu Huang
- Engineering Research Center of Nano‐Geomaterials of Ministry of Education Faculty of Materials Science and Chemistry China University of Geosciences Wuhan China
- Zhejiang Institute China University of Geosciences Hangzhou China
| | - Xiaoding Lou
- Engineering Research Center of Nano‐Geomaterials of Ministry of Education Faculty of Materials Science and Chemistry China University of Geosciences Wuhan China
| | - Fan Xia
- Engineering Research Center of Nano‐Geomaterials of Ministry of Education Faculty of Materials Science and Chemistry China University of Geosciences Wuhan China
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12
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Fan Y, Xie Y, Zhao Z, Zhao Y, Yu R, Liu XY, Lin Y, Lin C. Wettability read-out strategy for aptamer target binding based on a recognition/hydrophobic bilayer surface. Chem Commun (Camb) 2020; 56:6225-6228. [PMID: 32373835 DOI: 10.1039/d0cc01936d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We established a wettability read-out strategy for an aptasensor with a bilayer surface, using hydrophobicity reduction as the signal. The signal was induced by a fracture of the nanoneedle layer resulting from recognition by the supporting aptamer layer. The kinetics and influencing factors of this process were investigated with time curves.
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Affiliation(s)
- Yunfei Fan
- Research Institute for Biomimetics and Soft Matter, Fujian Provincial Key Laboratory for Soft Functional Materials Research, College of Physical Science and Technology, Xiamen University, 9 Zengcuoan West Road, 361005 Xiamen, China.
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13
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Mini-pillar microarray for individually electrochemical sensing in microdroplets. Biosens Bioelectron 2020; 149:111845. [DOI: 10.1016/j.bios.2019.111845] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 10/30/2019] [Accepted: 11/01/2019] [Indexed: 01/08/2023]
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14
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Manipulating the hydrophobicity of DNA as a universal strategy for visual biosensing. Nat Protoc 2020; 15:316-337. [DOI: 10.1038/s41596-019-0235-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Accepted: 08/27/2019] [Indexed: 02/07/2023]
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15
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Visual detection of the prostate specific antigen via a sandwich immunoassay and by using a superwettable chip coated with pH-responsive silica nanoparticles. Mikrochim Acta 2019; 186:550. [PMID: 31325059 DOI: 10.1007/s00604-019-3662-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 07/03/2019] [Indexed: 01/20/2023]
Abstract
A pH-responsive superwettable chip is described whose surface can switch between superhydrophobic and superhydrophilic. It can be used for the visual detection of the prostate specific antigen (PSA) based on contact angle readout. Magnetic beads were modified with primary antibody against PSA. After immunobinding, gold nanoparticles loaded with secondary antibody labeled with glucose oxidase is added. On addition of glucose, gluconic acid is formed which causes a drop in the local pH value. This results in a wettability switch of the pH-responsive superwettable chip from hydrophobic to hydrophilic. Under the optimized conditions, PSA can be quantified with a 3.2 pg mL-1 limit of detection by analyzing the contact angle and the related color that changes from blue via orange to red. The method is applicable to PSA detection in serum samples and for visual classification by cancer patients and healthy persons. It is also suitable for color-blind and color-weak individuals. Conceivably, this kind of assay can be transferred to the determination of various kinds of other bioanalytes including nucleotide, proteins, and even of ions and small organic molecules, and thus is has a wide scope. Graphical abstract Schematic presentation of a pH-responsive superwettable chip coated with silica nanoparticles for the visual detection of prostate specific antigen (PSA) by reading the contact angle. The superwettable chip achieves reliable clinical detection of serum PSA from prostate cancer patients.
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Song Y, Xu T, Xu LP, Zhang X. Nanodendritic gold/graphene-based biosensor for tri-mode miRNA sensing. Chem Commun (Camb) 2019; 55:1742-1745. [PMID: 30663738 DOI: 10.1039/c8cc09586h] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A nanodendritic gold/graphene-based biosensor that can perform fluorescence, SERS and electrochemical tri-modal miRNA detection in a single microdroplet has been developed. The biosensor was used to successfully perform tri-modal quantitative trace miRNA-375 detection, which enormously reduces false positive readings caused by interference and ambiguous signals, and has significant implications for use in precise physiological and pathological diagnosis.
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Affiliation(s)
- Yongchao Song
- Research Center for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China.
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17
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Xu T, Xu LP, Zhang X, Wang S. Bioinspired superwettable micropatterns for biosensing. Chem Soc Rev 2019; 48:3153-3165. [DOI: 10.1039/c8cs00915e] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The bioinspired micropatterns exhibit outstanding capacity in controlling and patterning microdroplets, which have offered new functionalities and possibilities towards a wide variety of emerging biological and biomedical applications.
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Affiliation(s)
- Tailin Xu
- Research Center for Bioengineering and Sensing Technology
- University of Science & Technology Beijing
- Beijing 100083
- P. R. China
| | - Li-Ping Xu
- Research Center for Bioengineering and Sensing Technology
- University of Science & Technology Beijing
- Beijing 100083
- P. R. China
| | - Xueji Zhang
- Research Center for Bioengineering and Sensing Technology
- University of Science & Technology Beijing
- Beijing 100083
- P. R. China
- School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen
| | - Shutao Wang
- Key Laboratory of Bio-inspired Materials and Interface Science
- CAS Center for Excellence in Nanoscience, Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
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