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Zhang G, Wang J, Wang Y, Qi W, Su R, He Z. Self-Assembly of Ferrocene-Phenylalanine@Graphene Oxide Hybrid Hydrogels for Dopamine Detection. Chempluschem 2020; 85:2341-2348. [PMID: 33094928 DOI: 10.1002/cplu.202000579] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 10/05/2020] [Indexed: 12/17/2022]
Abstract
The effect of graphene oxide (GO) is explored on the self-assembly behavior of ferrocene-L-phenylalanine (Fc-F) in solution. The assembly behavior of Fc-F in GO dispersions at different concentrations and pH values was systematically investigated. At pH 8, a stable hybrid material could be formed by facile and elaborate supramolecular assembly. Moreover, the concentration of GO could also be used to adjust the mechanical strength of the hybrid hydrogel. Increasing the concentration of GO in the assembly process, a hydrogel with better mechanical strength could be obtained. The storage modulus could be up to 6.3 kPa by increasing the GO concentration to 1 mg/mL. Finally, the dopamine concentration in the solution could be detected in a high accuracy by loading the hybrid hydrogel onto the electrode surface. The R2 of linear fitting equation could reach 0.9915 in the range of 10-200 μmol/L, indicating that it has the potential as biosensing electrode material.
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Affiliation(s)
- Gong Zhang
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, P. R. China
| | - Jiahui Wang
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, P. R. China
| | - Yuefei Wang
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, P. R. China.,Tianjin Key Laboratory of Membrane Science, and Desalination Technology, Tianjin University, Tianjin, 300072, P. R. China
| | - Wei Qi
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, P. R. China.,Collaborative Innovation Centre of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China.,Tianjin Key Laboratory of Membrane Science, and Desalination Technology, Tianjin University, Tianjin, 300072, P. R. China
| | - Rongxin Su
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, P. R. China.,Collaborative Innovation Centre of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China.,Tianjin Key Laboratory of Membrane Science, and Desalination Technology, Tianjin University, Tianjin, 300072, P. R. China
| | - Zhimin He
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, P. R. China
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A FRET assay for the quantitation of inhibitors of exonuclease EcoRV by using parchment paper inkjet-printed with graphene oxide and FAM-labelled DNA. Mikrochim Acta 2019; 186:211. [DOI: 10.1007/s00604-019-3317-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 02/13/2019] [Indexed: 10/27/2022]
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3
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Functionalized nanographene oxide in biomedicine applications: bioinspired surface modifications, multidrug shielding, and site-specific trafficking. Drug Discov Today 2019; 24:749-762. [DOI: 10.1016/j.drudis.2019.01.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 12/16/2018] [Accepted: 01/30/2019] [Indexed: 01/01/2023]
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4
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An aptamer-based four-color fluorometic method for simultaneous determination and imaging of alpha-fetoprotein, vascular endothelial growth factor-165, carcinoembryonic antigen and human epidermal growth factor receptor 2 in living cells. Mikrochim Acta 2019; 186:204. [PMID: 30796534 DOI: 10.1007/s00604-019-3312-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Accepted: 02/11/2019] [Indexed: 12/19/2022]
Abstract
The extraordinary fluorescence quenching capability of graphene oxide (GO) was coupled to the specific recognition capability of aptamers to design a four-color fluorescent nanoprobe for multiplexed detection and imaging of tumor-associated proteins in living cells. Specifically, alpha-fetoprotein (AFP), vascular endothelial growth factor-165 (VEGF165), carcinoembryonic antigen (CEA), and human epidermal growth factor receptor 2 (HER2) were detected. Due to strong π interaction, the fluorescence of labeled aptamers is quenched by GO. Four fluorophore-labeled aptamers that bind the tumor-associated proteins were adsorbed on GO to form the four-color nanoprobe with quenched fluorescence. The nanoprobes were internalized into cells via endocytosis, where the aptamer/GO nanoprobes bind the intracellular tumor-associated proteins. The aptamer-protein complexes thus formed detach from GO, and fluorescence recovers. Each analyte has its typical color (AFP: blue; VEGF165: green; CEA: yellow; HER2: red). As a result, simultaneous detection and imaging of multiple tumor-associated proteins in living cells were achieved. This nanoprobe has a fast response and is highly specific and biocompatible. The linear ranges for AFP, VEGF165, CEA, and HER2 are 0.8 nM-160 nM, 0.5 nM-100 nM, 1.0 nM-200 nM, and 1.2 nM-240 nM, respectively. Detection limits were 0.45 nM for AFP, 0.30 nM for VEGF165, 0.62 nM for CEA, and 0.96 nM for HER2. The probe allows for a fast distinction between tumor cells and normal cells via imaging. Graphical abstract Schematic presentation of the development of a four-color fluorometic method based on aptamer and graphene oxide for simultaneous detection and imaging of alpha-fetoprotein, vascular endothelial growth factor-165, carcinoembryonic antigen and human epidermal growth factor receptor 2 in living cells.
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Wang Y, Hu X, Weng J, Li J, Fan Q, Zhang Y, Ye D. A Photoacoustic Probe for the Imaging of Tumor Apoptosis by Caspase‐Mediated Macrocyclization and Self‐Assembly. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813748] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yuqi Wang
- State Key Laboratory of Analytical Chemistry for Life ScienceSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 China
| | - Xiaoming Hu
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM)Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)Nanjing University of Posts & Telecommunications Nanjing 210023 China
| | - Jianhui Weng
- State Key Laboratory of Analytical Chemistry for Life ScienceSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 China
| | - Jinbo Li
- State Key Laboratory of Analytical Chemistry for Life ScienceSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 China
| | - Quli Fan
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM)Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)Nanjing University of Posts & Telecommunications Nanjing 210023 China
| | - Yan Zhang
- State Key Laboratory of Analytical Chemistry for Life ScienceSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 China
| | - Deju Ye
- State Key Laboratory of Analytical Chemistry for Life ScienceSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 China
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6
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Wang Y, Hu X, Weng J, Li J, Fan Q, Zhang Y, Ye D. A Photoacoustic Probe for the Imaging of Tumor Apoptosis by Caspase-Mediated Macrocyclization and Self-Assembly. Angew Chem Int Ed Engl 2019; 58:4886-4890. [PMID: 30688393 DOI: 10.1002/anie.201813748] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Indexed: 01/07/2023]
Abstract
Photoacoustic (PA) imaging shows promise in the sensitive detection of caspase-3 activated in early tumor apoptosis in response to chemotherapy; smart PA probes are thus in high demand. Herein, we report the first smart PA probe (1-RGD) responsive to caspase-3, enabling real-time and high-resolution imaging of tumor apoptosis. 1-RGD is designed to leverage the synergetic effect of active delivery and caspase-3 activation. It is selectively recognized by active caspase-3 to trigger peptide substrate cleavage and biocompatible macrocyclization-mediated self-assembly, leading to an amplified PA imaging signal and prolonged retention in apoptotic tumor cells. Strong, high-resolution PA images are obtained in chemotherapy-induced apoptotic tumors in living mice after intravenous administration with 1-RGD, facilitating sensitive reporting of caspase-3 activity and distribution within tumor tissues.
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Affiliation(s)
- Yuqi Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Xiaoming Hu
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, Nanjing, 210023, China
| | - Jianhui Weng
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Jinbo Li
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Quli Fan
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, Nanjing, 210023, China
| | - Yan Zhang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Deju Ye
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
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Zhao C, Qiu L, Lv P, Han A, Fang G, Liu J, Wang S. AuNP-peptide probe for caspase-3 detection in living cells by SERS. Analyst 2018; 144:1275-1281. [PMID: 30547173 DOI: 10.1039/c8an02145g] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Colloidal nanoparticles can be used as surface-enhanced Raman scattering (SERS) substrates because the very close spacing between particles existing in these colloidal systems is beneficial for the generation of extremely strong and highly spatially localized electric field enhancements. Herein, a caspase-3-specified peptide was used as a molecular cross-linker to engineer gold nanoparticle (AuNP) junctions in a controllable manner. The peptide was designed with a sequence of CCALNNPFFDVED (Cys-Cys-Ala-Leu-Asn-Asn-Pro-Phe-Phe-Asp-Val-Glu-Asp) or CCALNNKYDDVED (Cys-Cys-Ala-Leu-Asn-Asn-Lys-Tyr-Asp-Asp-Val-Glu-Asp), where the CALNN (Cys-Ala-Leu-Asn-Asn) fragment helps to stabilize AuNP suspension in aqueous media and the sequence of DVED (Asp-Glu-Val-Asp) can be cleaved by caspase-3. In addition, the PFF (Pro-Phe-Phe) or KYD (Lys-Tyr-Asp) was exposed and interacted via the hydrophobic or alternate negative and positive electro-interaction in the presence of caspase-3, inducing the aggregation of colloidal Au-peptides accompanied with the enhancement of SERS. It can be observed that the SERS-enhanced signals were correlated with the caspase-3 concentrations and the limit of detection can reach 1.5 ng mL-1. Finally, this caspase-3-specified AuNP-peptide probe has been found to be a promising candidate for its application in the analysis of caspase-3 in living cells.
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Affiliation(s)
- Cuilian Zhao
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, 300457 Tianjin, China.
| | - Lihong Qiu
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, 300457 Tianjin, China.
| | - Peng Lv
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, 300457 Tianjin, China.
| | - Ailing Han
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, 300457 Tianjin, China.
| | - Guozhen Fang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, 300457 Tianjin, China.
| | - Jifeng Liu
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, 300457 Tianjin, China.
| | - Shuo Wang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, 300457 Tianjin, China. and Research Centre of Food Science and Human Health, School of Medicine, Nankai University, 300071 Tianjin, China
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8
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Affiliation(s)
- Vanessa Koh
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371
| | - Wei Li Ang
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371
| | - Alessandra Bonanni
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371
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9
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Cheng ZX, Bonanni A. All-in-One: Electroactive Nanocarbon as Simultaneous Platform and Label for Single-Step Biosensing. Chemistry 2018; 24:6380-6385. [PMID: 29315887 DOI: 10.1002/chem.201705729] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Indexed: 11/06/2022]
Abstract
We demonstrate here that an electroactive nanocarbon material can simultaneously work as both platform and label for the detection of mycotoxins. The versatility of the material for the immobilization of biorecognition elements was combined with its ability to provide an intrinsic electrochemical signal upon reduction of the oxygen functionalities on its surface. The intensity of peak current reflects the availability of oxygen functionalities for reduction, which can be directly correlated to the specific biorecognition event. We show that the use of electroactive nanocarbon as all-in-one biosensing component enables sensitive quantification of Fumonisin B1 (FB1 ) as model mycotoxin analyte, but it can be easily implemented to develop label-free, cost-effective and fast bioanalytical devices for universal biosensing.
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Affiliation(s)
- Zhao Xuan Cheng
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Alessandra Bonanni
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
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10
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Zhang Z, Liu Q, Gao D, Luo D, Niu Y, Yang J, Li Y. Graphene Oxide as a Multifunctional Platform for Raman and Fluorescence Imaging of Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:3000-5. [PMID: 25708171 DOI: 10.1002/smll.201403459] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 02/04/2015] [Indexed: 05/05/2023]
Abstract
Fluorescence and Raman bimodal imaging and Raman multifrequency imaging of Hela cells are carried out with the help of two kinds of graphene oxide-based hybrids. As a multifunctional platform, graphene oxide acts as not only a Raman probe, but also as a substrate for Raman and fluorescent probes to load on.
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Affiliation(s)
- Zhenyu Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory for the Physics and Chemistry of Nanodevices, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Qinghai Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory for the Physics and Chemistry of Nanodevices, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Dongliang Gao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory for the Physics and Chemistry of Nanodevices, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Da Luo
- Beijing National Laboratory for Molecular Sciences, Key Laboratory for the Physics and Chemistry of Nanodevices, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Yang Niu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory for the Physics and Chemistry of Nanodevices, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Juan Yang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory for the Physics and Chemistry of Nanodevices, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Yan Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory for the Physics and Chemistry of Nanodevices, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
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11
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Lei C, Xu X, Zhou J, Liu X, Nie Z, Qing M, Li P, Huang Y, Yao S. A Mix-and-Read Fluorescence Strategy for the Switch-On Probing of Kinase Activity Based on an Aptameric-Peptide/Graphene-Oxide Platform. Chem Asian J 2014; 9:2560-7. [DOI: 10.1002/asia.201402221] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Indexed: 11/08/2022]
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12
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Li Q, Liu L, Zhang S, Xu M, Wang X, Wang C, Besenbacher F, Dong M. Modulating aβ33-42 peptide assembly by graphene oxide. Chemistry 2014; 20:7236-40. [PMID: 24838837 DOI: 10.1002/chem.201402022] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Indexed: 12/12/2022]
Abstract
Graphene oxide (GO) is utilized as the modulator to tune the formation and development of amyloid fibrils (Aβ33-42 ). Atomic force microscopy temporal evolution measurements reveal that the initial binding between the peptide monomer and the large available surface of the GO sheets can redirect the assembly pathway of amyloid beta. The results support the possibility to develop graphene-based materials to inhibit amyloidosis.
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Affiliation(s)
- Qiang Li
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, 8000 Aarhus C (Denmark), Fax: (+45) 8942-3690
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Wang K, Huang J, Yang X, He X, Liu J. Recent advances in fluorescent nucleic acid probes for living cell studies. Analyst 2014; 138:62-71. [PMID: 23154215 DOI: 10.1039/c2an35254k] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Living cell studies can offer tremendous opportunities for biological and disease studies. Due to their high sensitivity and selectivity, minimum interference with living biological systems, ease of design and synthesis, fluorescent nucleic acid probes (FNAPs) have been widely used in living cell studies, such as for intracellular detection, cell detection, and cell-to-cell communication. Here, we review the general requirements and the recent developments in FNAPs for living cell studies. We broadly classify these designs as hybridization probes and aptamer probes. For hybridization probes, we describe recently developed designs, such as nanomaterial-based and amplification-based hybridization probes. For aptamer probes, we discuss four general paradigms that have appeared most frequently in the literature: nanomaterial-based, nanomachine-based, cell surface-anchored and activatable aptamer probe designs in vivo. FNAPs promise to open up new and exciting opportunities in biological marks detection for a wide range of biological and medical applications.
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Affiliation(s)
- Kemin Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Institute of Biology, Hunan University, Changsha 410082, China.
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Huang Y, Hu K, Zhao S, Li M, Chen ZF, Lv Q, Liang H. Carbon Nanotube-Enhanced Polarization of Fluorescent Peptides: A Novel Amplification Strategy for Homogeneous Detection of Proteases. Chem Asian J 2013; 9:87-92. [DOI: 10.1002/asia.201301161] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Indexed: 11/08/2022]
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Jang H, Ryoo S, Kim Y, Yoon S, Kim H, Han SW, Choi B, Kim D, Min D. Discovery of hepatitis C virus NS3 helicase inhibitors by a multiplexed, high-throughput helicase activity assay based on graphene oxide. Angew Chem Int Ed Engl 2013; 52:2340-4. [PMID: 23355441 PMCID: PMC7159783 DOI: 10.1002/anie.201209222] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2012] [Indexed: 01/16/2023]
Affiliation(s)
- Hongje Jang
- Department of Chemistry, KAIST, Daejeon, 305‐701 (Korea)
| | - Soo‐Ryoon Ryoo
- Department of Chemistry, Seoul National University, Seoul, 151‐747 (Korea)
| | - Young‐Kwan Kim
- Department of Chemistry, Seoul National University, Seoul, 151‐747 (Korea)
| | - Soojin Yoon
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, 143‐701 (Korea)
| | - Henna Kim
- Department of Chemistry, KAIST, Daejeon, 305‐701 (Korea)
| | - Sang Woo Han
- Department of Chemistry, KAIST, Daejeon, 305‐701 (Korea)
| | | | - Dong‐Eun Kim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, 143‐701 (Korea)
| | - Dal‐Hee Min
- Department of Chemistry, Seoul National University, Seoul, 151‐747 (Korea)
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Jang H, Ryoo S, Kim Y, Yoon S, Kim H, Han SW, Choi B, Kim D, Min D. Discovery of Hepatitis C Virus NS3 Helicase Inhibitors by a Multiplexed, High-Throughput Helicase Activity Assay Based on Graphene Oxide. ANGEWANDTE CHEMIE (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2013; 125:2396-2400. [PMID: 32313317 PMCID: PMC7159770 DOI: 10.1002/ange.201209222] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2012] [Indexed: 01/16/2023]
Affiliation(s)
- Hongje Jang
- Department of Chemistry, KAIST, Daejeon, 305‐701 (Korea)
| | - Soo‐Ryoon Ryoo
- Department of Chemistry, Seoul National University, Seoul, 151‐747 (Korea)
| | - Young‐Kwan Kim
- Department of Chemistry, Seoul National University, Seoul, 151‐747 (Korea)
| | - Soojin Yoon
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, 143‐701 (Korea)
| | - Henna Kim
- Department of Chemistry, KAIST, Daejeon, 305‐701 (Korea)
| | - Sang Woo Han
- Department of Chemistry, KAIST, Daejeon, 305‐701 (Korea)
| | | | - Dong‐Eun Kim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, 143‐701 (Korea)
| | - Dal‐Hee Min
- Department of Chemistry, Seoul National University, Seoul, 151‐747 (Korea)
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Yan H, Zhu L, Li X, Kwok A, Pan X, Zhao Y. A Photoswitchable [2]Rotaxane Array on Graphene Oxide. ASIAN J ORG CHEM 2012. [DOI: 10.1002/ajoc.201200102] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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18
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Wei G, Yan M, Dong R, Wang D, Zhou X, Chen J, Hao J. Covalent modification of reduced graphene oxide by means of diazonium chemistry and use as a drug-delivery system. Chemistry 2012; 18:14708-16. [PMID: 23018420 DOI: 10.1002/chem.201200843] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Revised: 07/15/2012] [Indexed: 11/11/2022]
Abstract
Under acidic conditions, reduced graphene oxide (rGO) was functionalized with p-aminobenzoic acid, which formed the diazonium ions through the diazotization with a wet-chemical method. Surfactants or stabilizers were not applied during the diazotization. After the functionalized rGO was treated through mild sonication in aqueous solution, these functionalized rGO sheets were less than two layers, which was determined by atomic force microscopy (AFM) imaging. The water solubility of functionalized rGO after the introduction of polyethyleneimine (PEI) was improved significantly; it was followed by covalent binding of folic acid (FA) molecules to the functionalized rGO to allow us to specifically target CBRH7919 cancer cells by using FA as a receptor. The loading and release behaviors of elsinochrome A (EA) and doxorubicin (DOX) on the functionalized rGO sheets were investigated. The EA loading ratio onto rGO-C(6)H(4)-CO-NH-PEI-NH-CO-FA (abbreviated rGO-PEI-FA, the weight ratio of drug loaded onto rGO-PEI-FA) was approximately 45.56 %, and that of DOX was approximately 28.62 %. It was interesting that the drug release from rGO-PEI-FA was pH- and salt-dependent. The results of cytotoxicity (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and flow cytometry (FCM) assays, as well as cell morphology observations) clearly showed that the concentration of rGO-PEI-FA as the drug-delivery composite should be less than 12.5 mg L(-1). The conjugation of DOX and rGO-PEI-FA can enhance the cancer-cell apoptosis effectively and can also push the cancer cells to the vulnerable G2 phase of the cell cycle, which is most sensitive and susceptible to damage by drugs or radiation.
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Affiliation(s)
- Guangcheng Wei
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, Shandong University, Jinan, PR China
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