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Liu J, Liu Z, Zhao C, Jiao Y, Li B, Shi J, Chen Z, Zhang Z. Coaxial dual-path electrochemical biosensing and logic strategy-based detection of lung cancer-derived exosomal PD-L1. NANOSCALE 2024; 16:8950-8959. [PMID: 38630023 DOI: 10.1039/d4nr00412d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
Exosomal programmed death ligand-1 (ExoPD-L1) is a vital marker of immune activation in the early stages of tumor therapy and it can inhibit anti-tumor immune responses. However, due to the low expression of ExoPD-L1 in cancer cells, it is difficult to perform highly sensitive assays and accurately differentiate cancer sources. Therefore, we constructed a coaxial dual-path electrochemical biosensor for highly accurate identification and detection of ExoPD-L1 from lung cancer based on chemical-biological coaxial nanomaterials and nucleic acid molecular signal amplification strategies. The measurements showed that the detected ExoPD-L1 concentrations ranged from 6 × 102 particles per mL to 6 × 108 particles per mL, and the detection limit was 310 particles per mL. Compared to other sensors, the electrochemical biosensor designed in this study has a lower detection limit and a wider detection range. Furthermore, we also successfully identified lung cancer-derived ExoPD-L1 by analyzing multiple protein biomarkers expressed on exosomes through the "AND" logic strategy. This sensor platform is expected to realize highly sensitive detection and accurate analysis of multiple sources of ExoPD-L1 and provide ideas for the clinical detection of ExoPD-L1.
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Affiliation(s)
- Junqiu Liu
- Innovation Research Institute of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China.
| | - Zhaidong Liu
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Chunqin Zhao
- Innovation Research Institute of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China.
| | - Yuting Jiao
- Innovation Research Institute of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China.
| | - Baohong Li
- Innovation Research Institute of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China.
| | - Jiaju Shi
- School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Zichao Chen
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China.
| | - Zhen Zhang
- Innovation Research Institute of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China.
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Cheng J, Zhang X, Yang Z, Xiang G. Highly conductive and transparent electrospun indium tin oxide nanofibers calcined by microwave plasma. NANOTECHNOLOGY 2021; 32:325602. [PMID: 33862615 DOI: 10.1088/1361-6528/abf8df] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 04/16/2021] [Indexed: 06/12/2023]
Abstract
In this work, indium tin oxide (ITO) nanofibers have been prepared by electrospinning of polymers and post-growth microwave plasma calcination (MPC). Interestingly, compared to traditional calcination in furnace, MPC can accelerate the degradation of high polar polymers and improve adhesion of ITO nanofibers to the sapphire substrate. Further characterizations reveal that the ITO nanofibers with diameters of 100-150 nm prepared by MPC at 600 °C can reach a low sheet resistance of 269 Ω/sq and a high transmittance of 90.7% at 550 nm simultaneously, which has not been previously reported by others. Our results show that the efficient MPC method has great potential in preparation of metal-oxide nanofibers for electrical and optical applications.
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Affiliation(s)
- Jun Cheng
- College of physics, Sichuan University, Chengdu 610000, People's Republic of China
| | - Xi Zhang
- College of physics, Sichuan University, Chengdu 610000, People's Republic of China
| | - Zhuanqing Yang
- College of physics, Sichuan University, Chengdu 610000, People's Republic of China
| | - Gang Xiang
- College of physics, Sichuan University, Chengdu 610000, People's Republic of China
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Le TXH, Etienne M, Lapicque F, Hehn A, Vilà N, Walcarius A. Local removal of oxygen for NAD(P)+ detection in aerated solutions. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136546] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Lignin-Based Carbon Nanofibers as Electrodes for Vanadium Redox Couple Electrochemistry. NANOMATERIALS 2019; 9:nano9010106. [PMID: 30654537 PMCID: PMC6359536 DOI: 10.3390/nano9010106] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 12/19/2018] [Accepted: 01/11/2019] [Indexed: 11/17/2022]
Abstract
Three different types of lignin (kraft, organosolv and phosphoric acid lignin) were characterized and tested as precursors of electrospun nanofibers. Polyethylene oxide (PEO) was added as a plasticizer and dimethyl formamide (DMF) employed as a solvent. It was found that the molecular weight of lignin was the key parameter to understand the differences of the mechanical stability of the resultant fiber mats. In the case of kraft lignin (KL), the influence of some changes in the synthetic process was also tested: applied voltage, pretreatment in air or not, and the addition of a small amount of Ketjen black. After pyrolysis in nitrogen flow, the obtained carbon nanofibers (CNFs) were characterized by different techniques to analyze their differences in morphology and surface chemistry. Vanadium electrochemistry in 3M sulfuric acid was used to evaluate the different CNFs. All fibers allowed electrochemical reactions, but we observed that the oxidation of V(II) to V(III) was very sensitive to the nature of the raw material. Materials prepared from kraft and phosphorus lignin showed the best performances. Nevertheless, when 1 wt.% of Ketjen black was added to KL during the electrospinning, the electrochemical performance of the sample was significantly improved and all targeted reactions for an all-vanadium redox flow battery were observed. Therefore, in this work, we demonstrated that CNFs obtained by the electrospinning of lignin can be employed as electrodes for vanadium electrochemistry, and their properties can be tuned to improve their electrochemical properties.
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Jing J, Gu X, Zhang S, Sun J, Chen Y, Sun T. Doping of aluminum (Al) into copper sulfide (CuS) nanocrystals enhanced their solar spectral selectivity. CrystEngComm 2019. [DOI: 10.1039/c9ce00668k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Al-CuS/PVA film possessed low NIR transmittance and high visible light transmittance. CuS nanocrystals doping Al significantly enhance their solar spectral selectivity.
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Affiliation(s)
- Jiang Jing
- State Key Laboratory of Organic-Inorganic Composites
- Beijing University of Chemical Technology
- Beijing
- China
| | - Xiaoyu Gu
- State Key Laboratory of Organic-Inorganic Composites
- Beijing University of Chemical Technology
- Beijing
- China
| | - Sheng Zhang
- State Key Laboratory of Organic-Inorganic Composites
- Beijing University of Chemical Technology
- Beijing
- China
| | - Jun Sun
- State Key Laboratory of Organic-Inorganic Composites
- Beijing University of Chemical Technology
- Beijing
- China
| | - Yu Chen
- Beijing Huateng Hightech Corp
- Beijing
- China
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Pruna R, López M, Teixidor F. Tuning the deposition parameters for optimizing the faradaic and non-faradaic electrochemical performance of nanowire array-shaped ITO electrodes prepared by electron beam evaporation. NANOSCALE 2018; 11:276-284. [PMID: 30534714 DOI: 10.1039/c8nr07908k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Nanostructured indium tin oxide (ITO) surfaces present an interesting yet unusual combination of properties (high electrical conductivity and optical transparency) at a high surface-to-volume ratio. Thus, previous studies presented nanostructured ITO electrodes as potentially suitable platforms for electrochemical biosensors, but still there is a lack of research on the optimization of preparation methods for such electrodes. We present a systematic study on the properties of nanostructured ITO electrodes prepared by physical deposition, where the substrate temperature was tuned for achieving the best combination of structural properties (namely electrical conductivity and optical transparency) and electrochemical performance. Analysis of faradaic cyclic voltammetry (CV) was performed to determine the electroactive surface area of the samples, and these results were benchmarked against those obtained by non-faradaic CV and Mott-Schottky (MS) analysis. The latter was useful to determine the dependence of some intrinsic features of the semiconductor on the substrate temperature during deposition. The results show that, out of a wide temperature range covering from 200 °C to 500 °C, there is a two-phase temperature-dependent growth, explained by the Stranski-Krastanov and self-catalytic vapor-liquid-solid (VLS) methods, and, on the other hand, that there is an optimal growth temperature at 300 °C that maximizes the electroactive surface area and sensitivity. This means that cost-effective electrodes can be prepared at low temperatures outperforming in terms of electroactive surface area, surface capacitance and sensitivity. As a proof-of-concept, nanostructured ITO electrodes were electrochemically derivatized with aryl diazonium salts (as a first step towards biochemical functionalization), and the performance of the optimized electrodes was tested in a real scenario.
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Affiliation(s)
- Raquel Pruna
- Departament d'Enginyeria Electrònica i Biomèdica, Universitat de Barcelona, C/Martí i Franquès 1, E-08028 Barcelona, Spain
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Mierzwa M, Lamouroux E, Walcarius A, Etienne M. Porous and Transparent Metal-oxide Electrodes : Preparation Methods and Electroanalytical Application Prospects. ELECTROANAL 2018. [DOI: 10.1002/elan.201800020] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Maciej Mierzwa
- Laboratoire de Chimie Physique et Microbiologie pour l'Environnement (LCPME), UMR7564 CNRS -; Université de Lorraine; 405 rue de Vandoeuvre F-54600 Villers-lès-Nancy France
- Laboratoire Structure et Réactivité des Systèmes Moléculaires Complexes (SRSMC), UMR7565 CNRS -; Université de Lorraine, BP 239; F-54506 Vandoeuvre-lès-Nancy cedex France
| | - Emmanuel Lamouroux
- Laboratoire Structure et Réactivité des Systèmes Moléculaires Complexes (SRSMC), UMR7565 CNRS -; Université de Lorraine, BP 239; F-54506 Vandoeuvre-lès-Nancy cedex France
| | - Alain Walcarius
- Laboratoire de Chimie Physique et Microbiologie pour l'Environnement (LCPME), UMR7564 CNRS -; Université de Lorraine; 405 rue de Vandoeuvre F-54600 Villers-lès-Nancy France
| | - Mathieu Etienne
- Laboratoire de Chimie Physique et Microbiologie pour l'Environnement (LCPME), UMR7564 CNRS -; Université de Lorraine; 405 rue de Vandoeuvre F-54600 Villers-lès-Nancy France
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Mierzwa M, Lamouroux E, Durand P, Etienne M. Highly Interconnected Macroporous and Transparent Indium Tin Oxide Electrode. ChemElectroChem 2017. [DOI: 10.1002/celc.201700781] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Maciej Mierzwa
- Laboratoire de Chimie Physique et Microbiologie pour, l'Environnement (LCPME), UMR7564; CNRS - Université de Lorraine; 405 rue de Vandoeuvre F-54600 Villers-lès-Nancy France
- Laboratoire Structure et Réactivité des Systèmes, Moléculaires Complexes (SRSMC), UMR7565; CNRS - Université de Lorraine; BP 239 F-54506 Vandoeuvre-lès-Nancy cedex France
| | - Emmanuel Lamouroux
- Laboratoire Structure et Réactivité des Systèmes, Moléculaires Complexes (SRSMC), UMR7565; CNRS - Université de Lorraine; BP 239 F-54506 Vandoeuvre-lès-Nancy cedex France
| | - Pierrick Durand
- Cristallographie, Résonance Magnétique et, Modélisations (CRM2) UMR7036; CNRS - Université de Lorraine; Boulevard des Aiguillettes F-54506 Vandoeuvre-lès-Nancy France
| | - Mathieu Etienne
- Laboratoire de Chimie Physique et Microbiologie pour, l'Environnement (LCPME), UMR7564; CNRS - Université de Lorraine; 405 rue de Vandoeuvre F-54600 Villers-lès-Nancy France
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Yoon S, Kim H, Shin ES, Huh JN, Noh YY, Park B, Hwang I. Toward High Conductivity of Electrospun Indium Tin Oxide Nanofibers with Fiber Morphology Dependent Surface Coverage: Postannealing and Polymer Ratio Effects. ACS APPLIED MATERIALS & INTERFACES 2017; 9:34305-34313. [PMID: 28891641 DOI: 10.1021/acsami.7b08987] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
High electrical conductivity of metal oxide thin films needs uniform surface coverage, which has been the issue for the thin films based on electrospun nanofibers (NFs) that have advantage over the sputtered/spin-coated films with respect to large surface area and mechanical flexibility. Herein, we investigated a reduction in the sheet resistance of electrospun indium tin oxide (ITO) NF films with improved surface coverage. We found that the surface coverage depends significantly on the electrospinnable polymer concentration in the precursor solutions, especially after post-hot-plate annealing following the infrared radiation furnace treatment. The postannealing process increases crystallinity and oxygen vacancies. However, with a higher PVP content, it makes the surface of ITO NFs more prominently rough as a result of the formation of larger sphere-shaped ITO particles on the NF surface, which gives rise to poor surface coverage. A less poly(vinylpyrrolidone) (PVP) content in ITO NF films by electrospinning for short deposition times was found to improve surface coverage even after postannealing. The sheet resistance notably decreases, down to as low as 350 Ω/sq, with a high transmittance of over 90%. Our study provides an understanding on how to achieve high electrical conductivity of ITO NF films with high surface coverage, which can be utilized for the optoelectronic and sensing applications.
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Affiliation(s)
| | | | - Eun-Sol Shin
- Department of Energy and Materials Engineering, Dongguk University , Seoul 04620, Republic of Korea
| | | | - Yong-Young Noh
- Department of Energy and Materials Engineering, Dongguk University , Seoul 04620, Republic of Korea
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