1
|
Zou HY, Lu XY, Kong FY, Wang ZX, Li HY, Fang HL, Wang W. A voltammetric sensor based on reduced graphene oxide-hemin-Ag nanocomposites for sensitive determination of tyrosine. RSC Adv 2020; 10:28026-28031. [PMID: 35519092 PMCID: PMC9055674 DOI: 10.1039/d0ra04976j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 07/11/2020] [Indexed: 11/21/2022] Open
Abstract
A novel voltammetric sensor was designed and used for the determination of l-tyrosine (l-Tyr) by surface modification of a glassy carbon electrode with reduced graphene oxide-hemin-Ag (rGO-H-Ag) nanocomposites. The nanocomposites were synthesized by a facile one-pot hydrothermal method and characterized by means of transmission electron microscopy and Raman spectroscopy. The determination of l-Tyr was investigated by cyclic voltammetry and further quantified using differential pulse voltammetry. The results revealed a significant enhanced electrochemical oxidation effect for l-Tyr at the nanocomposites modified electrode. Two linear ranges from 0.1 to 100 μM and 100 to 1000 μM as well as a low detection limit of 30 nM (S/N = 3) were obtained. In addition, the sensor also demonstrated good selectivity, reproducibility and stability. A novel electrochemical sensor for the sensitive determination of l-Tyr was designed with a rGO-H-Ag nanocomposite modified electrode.![]()
Collapse
Affiliation(s)
- Hui-Yu Zou
- School of Chemistry and Chemical Engineering, Jiangsu University Zhenjiang 212013 China.,School of Chemistry and Chemical Engineering, Yancheng Institute of Technology Yancheng 224051 China +86-515-88298186 +86-515-88298186
| | - Xin-Yang Lu
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology Yancheng 224051 China +86-515-88298186 +86-515-88298186
| | - Fen-Ying Kong
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology Yancheng 224051 China +86-515-88298186 +86-515-88298186
| | - Zhong-Xia Wang
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology Yancheng 224051 China +86-515-88298186 +86-515-88298186
| | - Heng-Ye Li
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology Yancheng 224051 China +86-515-88298186 +86-515-88298186
| | - Hai-Lin Fang
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology Yancheng 224051 China +86-515-88298186 +86-515-88298186
| | - Wei Wang
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology Yancheng 224051 China +86-515-88298186 +86-515-88298186
| |
Collapse
|
2
|
Youssef K, Hashim AF, Roberto SR, Hamed SF, Abd-Elsalam KA. Graphene-based nanocomposites: Synthesis, characterizations, and their agri-food applications. CARBON NANOMATERIALS FOR AGRI-FOOD AND ENVIRONMENTAL APPLICATIONS 2020:33-57. [DOI: 10.1016/b978-0-12-819786-8.00003-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
|
3
|
Nawaz MH, Xu J, Song Z, Riaz S, Han D, Niu L. N-Doped Graphene Oxide Decorated with PtCo Nanoparticles for Immobilization of Double-Stranded Deoxyribonucleic Acid and Investigation of Clenbuterol-Induced DNA Damage. ACS OMEGA 2019; 4:16524-16530. [PMID: 31616831 PMCID: PMC6788047 DOI: 10.1021/acsomega.9b02184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 09/09/2019] [Indexed: 06/10/2023]
Abstract
We demonstrate here a facile hydrothermal-assisted formation of PtCo alloy nanoparticles (NPs) and their simultaneous anchoring on the graphitic surface of N-doped graphene oxide (NGO). Doping induced nanopores in the carbon surface to facilitate the uniform and homogeneous anchoring of alloy nanoparticles. It was revealed that the formation of PtCo NPs on an NGO interface plodded excellent tendency toward double-stranded deoxyribonucleic acid (dsDNA). The dsDNA immobilization was enabled by the presence of several oxidation states of Pt and Co. The same property was further used to monitor the direct detection of dsDNA damage induced by clenbuterol via screen-printed carbon electrodes. Cyclic voltammetric and electrochemical impedance spectroscopic characterization traced well the dsDNA attachment on the modified electrode surface. Differential pulsed voltammetry was further used as a tool to monitor the characteristic guanine peak before and after incubating with clenbuterol used as a damage probe for the dsDNA. The findings can further be appurtenant in exploring dsDNA immobilization protocols and developing analytical methods for determination of various dsDNA damaging agents.
Collapse
Affiliation(s)
- Mian Hasnain Nawaz
- Center
for Advanced Analytical Science, c/o School of Chemistry and Chemical
Engineering, Guangzhou University, Guangzhou 510006, P.R. China
- State
Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory
for Modern Analytical Techniques, Changchun
Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P.R. China
- Interdisciplinary Research
Centre in Biomedical Materials (IRCBM) and Department of
Chemistry, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
| | - Jianan Xu
- State
Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory
for Modern Analytical Techniques, Changchun
Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P.R. China
| | - Zhongqian Song
- State
Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory
for Modern Analytical Techniques, Changchun
Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P.R. China
| | - Sara Riaz
- Interdisciplinary Research
Centre in Biomedical Materials (IRCBM) and Department of
Chemistry, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
| | - Dongxue Han
- Center
for Advanced Analytical Science, c/o School of Chemistry and Chemical
Engineering, Guangzhou University, Guangzhou 510006, P.R. China
- State
Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory
for Modern Analytical Techniques, Changchun
Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P.R. China
| | - Li Niu
- Center
for Advanced Analytical Science, c/o School of Chemistry and Chemical
Engineering, Guangzhou University, Guangzhou 510006, P.R. China
- State
Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory
for Modern Analytical Techniques, Changchun
Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P.R. China
| |
Collapse
|
4
|
Deng P, Zheng S, Yun W, Zhang W, Yang L. A visual and sensitive Hg 2+ detection strategy based on split DNAzyme amplification and peroxidase-like activity of hemin-graphene composites. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 210:335-340. [PMID: 30472597 DOI: 10.1016/j.saa.2018.11.048] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 11/14/2018] [Accepted: 11/17/2018] [Indexed: 06/09/2023]
Abstract
A visual and sensitive Hg2+ detection strategy was developed based on split DNAzyme amplification and hemin-graphene oxide composites (H-GNs). Two split DNAzyme sequences can form two entire enzyme-strands DNA (E-DNA) by T-Hg2+-T interaction. The E-DNA can bind with the loop of molecular beacon (MB) to form Mg2+-dependent DNAzyme structure. The formed DNAzyme can circularly cleave the loop of MB, resulting large amount of DNA fragments. The resultant DNA fragments can prevent H-GNs from aggregation by adsorbing on its surface. Consequently, the supernate with large amount of H-GNs shows dark blue color after chromogenic reaction. This strategy shows a linear range from 50 pM to 1200 pM. The limit detection can be low to 33 pM. This strategy provides a visual and enzyme-free amplification mode for quick and sensitive screen of Hg2+.
Collapse
Affiliation(s)
- Pengxi Deng
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Shuang Zheng
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Wen Yun
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China.
| | - Weilu Zhang
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China.
| | - Lizhu Yang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.
| |
Collapse
|
5
|
Zhu J, Li Y, Li L, Wang J, Wang H, Hong W, Hao K, Xue Y, Chen B, Wang Z. A novel absorption spectrometric method, based on graphene nanomaterials, for detection of hepatocellular carcinoma-specific T lymphocyte cells. Int J Nanomedicine 2018; 13:5523-5536. [PMID: 30271145 PMCID: PMC6154735 DOI: 10.2147/ijn.s168574] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Introduction Detection of antigen-specific cytotoxic T lymphocytes (CTLs) is the foundation for understanding hepatocellular carcinoma immune pathology and hepatocellular carcinoma immunotherapy. However, the classical method for labeling CTLs, major histocompatibility complex (MHC)–peptide tetramer, has drawbacks and needs further improvement. Materials and methods Here, as a new detection probe, a graphene-based MHC–peptide multimer was developed for sensitively and selectively identifying hepatocellular carcinoma-specific T-cells. To assess its detection efficiency, reduced graphene oxide (RGO) was functionalized with hemin and streptavidin to prepare a functionalized HRGO–streptavidin complex. Biotinylated MHC–peptide monomer was subsequently constructed onto HRGO to generate a detection probe for CTL labeling. The number of T-cells was detected through the reaction between HRGO and tetramethylbenzidine. Results Using HRGO/MHC–peptide multimers, the number of T-cells was efficiently detected in both the induction system in vitro and in peripheral blood of patients. Conclusion HRGO/MHC-peptide multimers methodology has application prospects in the detection of antigen peptide-specific T cells.
Collapse
Affiliation(s)
- Jianmeng Zhu
- Department of Clinical Laboratory, Chun'an First People's Hospital (Zhejiang Provincial People's Hospital Chun'an Branch), Hangzhou, Zhejiang Province, China, ,
| | - Yiping Li
- Department of Clinical Laboratory, Chun'an First People's Hospital (Zhejiang Provincial People's Hospital Chun'an Branch), Hangzhou, Zhejiang Province, China, ,
| | - Lei Li
- Department of Pathophysiology, School of Basic Medical Science, Southern Medical University, Guangzhou, Zhejiang, China
| | - Jian Wang
- Department of Clinical Laboratory, Chun'an First People's Hospital (Zhejiang Provincial People's Hospital Chun'an Branch), Hangzhou, Zhejiang Province, China, ,
| | - Hongqin Wang
- Department of Clinical Laboratory, Chun'an First People's Hospital (Zhejiang Provincial People's Hospital Chun'an Branch), Hangzhou, Zhejiang Province, China, ,
| | - Wenzhong Hong
- Department of Clinical Laboratory, Chun'an First People's Hospital (Zhejiang Provincial People's Hospital Chun'an Branch), Hangzhou, Zhejiang Province, China, ,
| | - Ke Hao
- Department of Blood Transfusion, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China, ,
| | - Yadan Xue
- Department of Blood Transfusion, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China, ,
| | - Bingyu Chen
- Department of Clinical Laboratory, Chun'an First People's Hospital (Zhejiang Provincial People's Hospital Chun'an Branch), Hangzhou, Zhejiang Province, China, , .,Department of Blood Transfusion, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China, ,
| | - Zhen Wang
- Department of Clinical Laboratory, Chun'an First People's Hospital (Zhejiang Provincial People's Hospital Chun'an Branch), Hangzhou, Zhejiang Province, China, , .,Department of Blood Transfusion, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China, ,
| |
Collapse
|
6
|
Liang Y, Su J, Huang Y, Li X, Tao Y, Lu C, Zhu J, Bai Z, Meng J, Lu X, Zhao Y. An ATP Aptasensor Based on the Peroxidase-like Activity of Hemin/Graphene Oxide Nanosheets. ANAL SCI 2018; 32:565-9. [PMID: 27169657 DOI: 10.2116/analsci.32.565] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In the present work, a sensitive electrochemical aptasensor was designed for the detection of adenosine triphosphate (ATP) with hemin/graphene oxide nanosheets (HGNs). Firstly, the ATP aptamer was self-assembled on gold electrode surface, and then HGNs were captured to the modified electrode by π-π stacking. The captured HGNs could catalyze the disproportionation reaction of H2O2, and produced a detectable electrochemical signal by chronoamperometry. ATP was competitively bound to aptamer which led to the release of HGNs from the electrode surface after adding ATP. The decrease of the electrochemical signal, which was calculated by the difference of amperometric responses before and after incubation of ATP, provided a quantitative signal for ATP detection. A linear correlation was achieved between the difference of the amperometric responses and the logarithmic concentration of ATP ranging from 0.5 to 100 nM with a detection limit of 0.08 nM. Besides, the aptasensor also exhibited good selectivity toward ATP against other analogs.
Collapse
Affiliation(s)
- Ying Liang
- National Center for International Research of Biological Targeting Diagnosis and Therapy, Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
7
|
A voltammetric study on the interaction between isoproterenol and cardiomyocyte DNA by using a glassy carbon electrode modified with carbon nanotubes, polyaniline and gold nanoparticles. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2295-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
8
|
Zhao Y, Zhang Y, Liu A, Wei Z, Liu S. Construction of Three-Dimensional Hemin-Functionalized Graphene Hydrogel with High Mechanical Stability and Adsorption Capacity for Enhancing Photodegradation of Methylene Blue. ACS APPLIED MATERIALS & INTERFACES 2017; 9:4006-4014. [PMID: 28078884 DOI: 10.1021/acsami.6b10959] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A three-dimensional hemin-functionalized graphene hydrogel (Hem/GH) was prepared by a facile self-assembly approach. The as-prepared Hem/GH showed good mechanical strength with a storage modulus of 609-642 kPa and a high adsorption capacity to organic dye contaminants (341 mg g-1 for rhodamine B). Moreover, Hem/GH could be used as a photosensitizer for the photocatalytic degradation of organic dyes and displayed superior photodegradation activity of methylene blue (MB). This result was better than that of counterparts such as graphene hydrogel (GH) and commercial catalyst P25. The excellent cycling performance of the Hem/GH was well maintained even after multiple cycles on adsorption process and photocatalytic reaction. Interestingly, after the photodegradation of MB, a light-induced pH change of the solution from alkaline pH 8.99 to acidic pH 3.82 was observed, and 10 wt % total organic carbon remained. The liquid chromatography/time-of-flight mass spectrometry (LC/TOF-MS) analysis confirmed the generation of acidic degradation products. The photocatalytic mechanism was further investigated by trapping experiments, which revealed that the MB degradation was driven mainly by the participation of O2•- radicals in the photocatalytic reaction. As an extended application, visually intuitive observation showed the as-prepared Hem/GH also had strong antibacterial properties. These results suggest that Hem/GH could be potentially used for practical application due to its high adsorption ability, excellent photocatalytic activity, and strong antibacterial properties.
Collapse
Affiliation(s)
- Yuewu Zhao
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, School of Chemistry and Chemical Engineering, Southeast University , Nanjing 211189, China
| | - Yuanjian Zhang
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, School of Chemistry and Chemical Engineering, Southeast University , Nanjing 211189, China
| | - Anran Liu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, School of Chemistry and Chemical Engineering, Southeast University , Nanjing 211189, China
| | - Zhenzhen Wei
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, School of Chemistry and Chemical Engineering, Southeast University , Nanjing 211189, China
| | - Songqin Liu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, School of Chemistry and Chemical Engineering, Southeast University , Nanjing 211189, China
| |
Collapse
|
9
|
Alizadeh N, Salimi A, Hallaj R. Hemin/G-Quadruplex Horseradish Peroxidase-Mimicking DNAzyme: Principle and Biosensing Application. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2017; 170:85-106. [DOI: 10.1007/10_2017_37] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
10
|
Gu CJ, Kong FY, Chen ZD, Fan DH, Fang HL, Wang W. Reduced graphene oxide-Hemin-Au nanohybrids: Facile one-pot synthesis and enhanced electrocatalytic activity towards the reduction of hydrogen peroxide. Biosens Bioelectron 2015; 78:300-307. [PMID: 26638039 DOI: 10.1016/j.bios.2015.11.035] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2015] [Revised: 11/10/2015] [Accepted: 11/13/2015] [Indexed: 12/28/2022]
Abstract
A facile and effective strategy is demonstrated for the synthesis of ternary reduced graphene oxide-Hemin-Au (rGO-H-Au) nanohybrids. The nanohybrids were synthesized through a one-pot in situ reduction of GO and HAuCl4 under alkaline conditions using GO, Hemin and HAuCl4 as the starting materials. The synthesis process can be finished within 1h in a solution phase, without adding any additional surfactant, stabilizing agent and toxic or harsh chemical reducing agents. The resulting nanohybrids were characterized by UV-vis spectroscopy, Raman spectroscopy, transmission electron microscopy (TEM), and so on. Electrochemical measurements showed that the rGO-H-Au nanohybrids exhibited good electrocatalytic activity for the reduction of hydrogen peroxide (H2O2). Based on this property, a simple and highly sensitive amperometric biosensor for H2O2 had been developed. The linear relationships were obtained from 0.1 µM to 40 µM and the detection limit was estimated to be 30 nM. The simple and sensitive sensing platform showed great promising applications in the pharmaceutical, clinical and industrial detection of H2O2.
Collapse
Affiliation(s)
- Chang-Jie Gu
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Fen-Ying Kong
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, China.
| | - Zhi-Dong Chen
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Da-He Fan
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, China
| | - Hai-Lin Fang
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, China
| | - Wei Wang
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, China.
| |
Collapse
|
11
|
Adegoke O, Forbes PBC. L-cysteine-capped core/shell/shell quantum dot-graphene oxide nanocomposite fluorescence probe for polycyclic aromatic hydrocarbon detection. Talanta 2015; 146:780-8. [PMID: 26695330 DOI: 10.1016/j.talanta.2015.06.023] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 06/09/2015] [Accepted: 06/11/2015] [Indexed: 11/28/2022]
Abstract
Environmental pollutants, such as the polycyclic aromatic hydrocarbons (PAHs), become widely distributed in the environment after emission from a range of sources, and they have potential biological effects, including toxicity and carcinogenity. In this work, we have demonstrated the analytical potential of a covalently linked L-cysteine-capped CdSeTe/ZnSe/ZnS core/shell/shell quantum dot (QD)-graphene oxide (GO) nanocomposite fluorescence probe to detect PAH compounds in aqueous solution. Water-soluble L-cysteine-capped CdSeTe/ZnSe/ZnS QDs were synthesized for the first time and were covalently bonded to GO. The fluorescence of the QD-GO nanocomposite was enhanced relative to the unconjugated QDs. Various techniques including TEM, SEM, HRSEM, XRD, Raman, FT-IR, UV/vis and fluorescence spectrophotometry were employed to characterize both the QDs and the QD-GO nanocomposite. Four commonly found priority PAH analytes namely; phenanthrene (Phe), anthracene (Ant), pyrene (Py) and naphthalene (Naph), were tested and it was found that each of the PAH analytes enhanced the fluorescence of the QD-GO probe. Phe was selected for further studies as the PL enhancement was significantly greater for this PAH. A limit of detection (LOD) of 0.19 µg/L was obtained for Phe under optimum conditions, whilst the LOD of Ant, Py and Naph were estimated to be ~0.26 µg/L. The fluorescence detection mechanism is proposed.
Collapse
Affiliation(s)
- Oluwasesan Adegoke
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, University of Pretoria, Lynnwood Road, Pretoria 0002, South Africa.
| | - Patricia B C Forbes
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, University of Pretoria, Lynnwood Road, Pretoria 0002, South Africa.
| |
Collapse
|
12
|
Nezakati T, Cousins BG, Seifalian AM. Toxicology of chemically modified graphene-based materials for medical application. Arch Toxicol 2014; 88:1987-2012. [PMID: 25234085 PMCID: PMC4201927 DOI: 10.1007/s00204-014-1361-0] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Accepted: 09/03/2014] [Indexed: 12/12/2022]
Abstract
This review article aims to provide an overview of chemically modified graphene, and graphene oxide (GO), and their impact on toxicology when present in biological systems. Graphene is one of the most promising nanomaterials due to unique physicochemical properties including enhanced optical, thermal, and electrically conductive behavior in addition to mechanical strength and high surface-to-volume ratio. Graphene-based nanomaterials have received much attention over the last 5 years in the biomedical field ranging from their use as polymeric conduits for nerve regeneration, carriers for targeted drug delivery and in the treatment of cancer via photo-thermal therapy. Both in vitro and in vivo biological studies of graphene-based nanomaterials help understand their relative toxicity and biocompatibility when used for biomedical applications. Several studies investigating important material properties such as surface charge, concentration, shape, size, structural defects, and chemical functional groups relate to their safety profile and influence cyto- and geno-toxicology. In this review, we highlight the most recent studies of graphene-based nanomaterials and outline their unique properties, which determine their interactions under a range of environmental conditions. The advent of graphene technology has led to many promising new opportunities for future applications in the field of electronics, biotechnology, and nanomedicine to aid in the diagnosis and treatment of a variety of debilitating diseases.
Collapse
Affiliation(s)
- Toktam Nezakati
- UCL Centre for Nanotechnology and Regeneration Medicine, Division of Surgery and Interventional Science, University College London, London, UK
| | - Brian G. Cousins
- UCL Centre for Nanotechnology and Regeneration Medicine, Division of Surgery and Interventional Science, University College London, London, UK
| | - Alexander M. Seifalian
- UCL Centre for Nanotechnology and Regeneration Medicine, Division of Surgery and Interventional Science, University College London, London, UK
- Royal Free London NHS Foundation Trust, London, UK
| |
Collapse
|
13
|
Yang Z, Qian J, Yang X, Jiang D, Du X, Wang K, Mao H, Wang K. A facile label-free colorimetric aptasensor for acetamiprid based on the peroxidase-like activity of hemin-functionalized reduced graphene oxide. Biosens Bioelectron 2014; 65:39-46. [PMID: 25461136 DOI: 10.1016/j.bios.2014.10.004] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 09/17/2014] [Accepted: 10/01/2014] [Indexed: 11/28/2022]
Abstract
A facile aptasensor has been developed for the colorimetric detection of acetamiprid by using the hemin-functionalized reduced graphene oxide (hemin-rGO) composites. The as-prepared hemin-rGO composites possessed both the ability of rGO to physically adsorb the aptamers and the peroxidase-like activity of hemin that could catalyse 3,3,5,5-tetramethylbenzidine (TMB) in the presence of H2O2, to produce a solution with blue color. The well-dispersed hemin-rGO composites coagulated completely at the proper salt concentration; however, the coagulation of hemin-rGO was vanished when abundant aptamers were adsorbed on its surface because the attached negatively charged DNA backbone increased individual hemin-rGO electrostatic repulsion. In the detection scheme, acetamiprid with different concentrations was firstly incubated with the same amount of aptamer. The more acetamiprid in the tested solution, the less free aptamers were absorbed on the hemin-rGO surface, making the composites coagulate to a higher degree in the presence of the optimum NaCl concentration. As a consequence, the content of hemin-rGO in the supernatant was decreased after centrifugation, which catalysed oxidation of TMB in the presence of H2O2 to produce light blue color with a low absorbance. The color variation relavant to the acetamiprid concentration can be judged by the naked eyes and easily monitored by the inexpensive UV-vis spectrometer. Such designed aptasensor displayed a linear response for acetamiprid in the range from 100nM to 10μM with a detection limit of 40nM (S/N=3). This colorimetric aptasensing platform offers great advantages including the simple operation process, low-cost portable instrument, and user-friendly applications.
Collapse
Affiliation(s)
- Zhenting Yang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Jing Qian
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Xingwang Yang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Ding Jiang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Xiaojiao Du
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Kan Wang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Hanping Mao
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Kun Wang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| |
Collapse
|
14
|
|
15
|
Sundramoorthy AK, Gunasekaran S. Applications of graphene in quality assurance and safety of food. Trends Analyt Chem 2014. [DOI: 10.1016/j.trac.2014.04.015] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
16
|
Bi S, Zhao T, Jia X, He P. Magnetic graphene oxide-supported hemin as peroxidase probe for sensitive detection of thiols in extracts of cancer cells. Biosens Bioelectron 2014; 57:110-6. [DOI: 10.1016/j.bios.2014.01.025] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Revised: 01/16/2014] [Accepted: 01/17/2014] [Indexed: 12/11/2022]
|
17
|
Label-free and rapid colorimetric detection of DNA damage based on self-assembly of a hemin-graphene nanocomposite. Mikrochim Acta 2014. [DOI: 10.1007/s00604-014-1245-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
18
|
Teng X, Yan M, Bi H. Spectra investigation on surface characteristics of graphene oxide nanosheets treated with tartaric, malic and oxalic acids. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 118:1020-4. [PMID: 24161864 DOI: 10.1016/j.saa.2013.09.087] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2013] [Revised: 09/20/2013] [Accepted: 09/26/2013] [Indexed: 05/06/2023]
Abstract
The surface characteristics of graphene oxide nanosheets (GO) treated respectively with tartaric acid, malic acid and oxalic acid, have been investigated by mainly using optical spectroscopic methods including Fourier transform infrared spectroscopy (FT-IR), Ultraviolet-visible (UV-Vis) absorption and Raman spectroscopy. Additionally, the electrochemical property of the products has also been studied. The data revealed that oxygen-containing groups such as OH, COOH and CO on the GO surface have been almost removed and thus reduced graphene oxide nanosheets (RGN) were obtained. Interestingly, the number of sp(2) domains of RGN increases as treated by tartaric acid<malic acid<oxalic acid whereas the steric hindrance (SH) decreases and the ionization constant (IC) differs among these three acids. Furthermore, the specific capacitances (Cs) of GO have been greatly promoted from 2.4 F g(-1) to 100.8, 112.4, and 147 F g(-1) after treated with tartaric, malic and oxalic acids, respectively. This finding agrees well with the spectra result of the tendency of surface conjugated degree alteration. We claim that the difference in both SH and IC among these acids is the main reason for the diverse surface characteristics as well as the improved Cs of the RGN.
Collapse
Affiliation(s)
- Xiyao Teng
- College of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, PR China; Institute of Health Research, Anhui University, Hefei 230601, PR China
| | | | | |
Collapse
|
19
|
Hu C, Xi Q, Ge J, Luo FY, Tang LJ, Jiang JH, Yu RQ. Graphene–hemin hybrid nanosheets as a label-free colorimetric platform for DNA and small molecule assays. RSC Adv 2014. [DOI: 10.1039/c4ra08789e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel colorimetric platform has been developed for detecting DNA and small molecules based on a graphene–hemin hybrid nanosheet in a homogenous solution.
Collapse
Affiliation(s)
- Cui Hu
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha, P. R. China
| | - Qiang Xi
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha, P. R. China
| | - Jia Ge
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha, P. R. China
| | - Feng-Yan Luo
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha, P. R. China
| | - Li-Juan Tang
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha, P. R. China
| | - Jian-Hui Jiang
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha, P. R. China
| | - Ru-Qin Yu
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha, P. R. China
| |
Collapse
|