1
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Xin Y, Wang Z, Yao H, Dou X, Zhang R, Wang H, Miao Y, Zhang Z. Oxygen Vacancies-Induced Antifouling Photoelectrochemical Aptasensor for Highly Sensitive and Selective Determination of α-Fetoprotein. Anal Chem 2024; 96:3645-3654. [PMID: 38356334 DOI: 10.1021/acs.analchem.3c05782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
Accurate measurement of cancer markers in urine is a convenient method for tumor monitoring. However, the concentration of cancer markers in urine is so low that it is difficult to achieve their measurement. Photoelectrochemical (PEC) sensors are a promising technology to realize the detection of trace cancer markers due to their high sensitivity. Currently, the interference of nonspecific biomolecules in urine is the main reason affecting the high sensitivity and selectivity of PEC sensors in detecting cancer markers. In this work, a strategy of oxygen vacancy (OV) modulation is proposed to construct a fouling-resistant PEC aptamer sensing platform for the detection of α-fetoprotein (AFP), a liver cancer marker. The introduction of OVs induces the formation of intermediate localized states in the photoelectric material, which not only facilitates the separation of photogenerated carriers but also leads to the redshift of the light absorption edge. More importantly, OVs with positive electrical properties can be employed to modify the antifouling layer (C-PEG) with negatively charged groups through an electrostatic interaction. The synergistic effect of OVs, antifouling layer, and aptamer resulted in a TiO2/OVs/C-PEG-based PEC sensor achieves a wide linear range from 1 pg/mL to 100 ng/mL and a low detection limit of 0.3 pg/mL for AFP. In addition, the sensor successfully realized the determination of AFP in urine samples and accurately differentiated between normal people and liver cancer patients in the early and advanced stages. This project is of great significance in advancing the application of photoelectrochemical bioanalytical technology to achieve the detection of cancer markers in urine by investigating the construction of an OVs-regulated fouling-resistant sensing interface.
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Affiliation(s)
- Yanmei Xin
- Institute of Bismuth Science, School of Materials and Chemistry, University of Shanghai for Science and Technology, 334 Jungong Road, Shanghai 200093, China
| | - Zhuo Wang
- Institute of Bismuth Science, School of Materials and Chemistry, University of Shanghai for Science and Technology, 334 Jungong Road, Shanghai 200093, China
| | - Haizi Yao
- School of Energy Engineering, Huanghuai University, Zhumadian, Henan Province 463600, China
| | - Xiaoru Dou
- Institute of Bismuth Science, School of Materials and Chemistry, University of Shanghai for Science and Technology, 334 Jungong Road, Shanghai 200093, China
| | - Ruiting Zhang
- Institute of Bismuth Science, School of Materials and Chemistry, University of Shanghai for Science and Technology, 334 Jungong Road, Shanghai 200093, China
| | - Huiqing Wang
- Institute of Bismuth Science, School of Materials and Chemistry, University of Shanghai for Science and Technology, 334 Jungong Road, Shanghai 200093, China
| | - Yuqing Miao
- Institute of Bismuth Science, School of Materials and Chemistry, University of Shanghai for Science and Technology, 334 Jungong Road, Shanghai 200093, China
| | - Zhonghai Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
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2
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Electrochemical sensor for the simultaneous detection of CA72-4 and CA19-9 tumor markers using dual recognition via glycosyl imprinting and lectin-specific binding for accurate diagnosis of gastric cancer. Biosens Bioelectron 2022; 216:114672. [DOI: 10.1016/j.bios.2022.114672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 08/09/2022] [Accepted: 08/27/2022] [Indexed: 11/22/2022]
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3
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Wang F, Xu Y, Han H, Ma Z. In situ growth of electroactive polymers via ATRP to construct a biosensing interface for tumor marker. Mikrochim Acta 2021; 188:389. [PMID: 34676454 DOI: 10.1007/s00604-021-05048-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 10/04/2021] [Indexed: 11/24/2022]
Abstract
A novel biosensing interface for tumor markers was designed based on the atom transfer radical polymerization (ATRP) of poly(isopropenylphenol) (PPPL) in situ initiated by the fixing of p-chloromethyl benzoic acid on the surface of amino-modified electrodes. It was found that the electrochemical activity of PPPL itself can provide sufficient signals for these biosensors, which can avoid signal leakage and streamline the interface modification process. Cu(II) ions absorbed on the carbon spheres and then were released via acid stimulation to act as a catalyst to participate in the interface polymerization with ATRP. As the concentration of targets increased, more Cu(II) ions were released, and the electrochemical signal of polymers was enhanced. Therefore, the sensitive detection of carbohydrate antigen 19-9 (CA19-9) as a model target was achieved, with an ultralow limit of detection of 39 µU mL-1 and wide detection range from 100 µU mL-1 to 100 U mL-1 under optimal conditions. Furthermore, this method achieved satisfying performance in human blood serum with good inter-assay precision (RSD < 6%) and satisfactory recovery of ~ 99-105%. According to the results, this work is of great significance for constructing biosensor interfaces via in situ polymerization. A novel biosensing interface for tumor marker was designed based on atom transfer radical polymerization (ATRP), which poly(isopropenylphenol) with electrochemical signal was fabricated in situ on electrode.
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Affiliation(s)
- Fei Wang
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Yang Xu
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Hongliang Han
- Department of Chemistry, Capital Normal University, Beijing, 100048, China.
| | - Zhanfang Ma
- Department of Chemistry, Capital Normal University, Beijing, 100048, China.
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4
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Ultrasensitive molecularly imprinted fluorescence sensor for simultaneous determination of CA125 and CA15-3 in human serum and OVCAR-3 and MCF-7 cells lines using Cd and Ni nanoclusters as new emitters. Anal Bioanal Chem 2021; 413:4049-4061. [PMID: 34057557 DOI: 10.1007/s00216-021-03362-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 03/19/2021] [Accepted: 04/19/2021] [Indexed: 02/05/2023]
Abstract
In the clinical diagnosis of tumors, a single-marker immunoassay may lead to false results. Thus there is a need for an effective and valid method for the simultaneous measurement of multiple tumor markers. In this work, an efficient fluorescence immunosensor for the simultaneous measurement of CA125 and CA15-3 tumor markers was fabricated by utilizing the high selectivity of magnetic molecularly imprinted polymers (MMIPs) and the high sensitivity of a fluorescence (FL) method. Ni nanoclusters (Ni NCs) and noble Cd nanoclusters (Cd NCs) were introduced as efficient and economic emitters, and magnetic graphene oxide (GO-Fe3O4) was applied as a support material for surface molecularly imprinted polymers. Under the most favorable experimental conditions, the fluorescence intensity of the Cd NCs and Ni NCs gradually increased with increasing concentration of CA125 and CA15-3 antigens at a range of 0.0005-40 U mL-1, respectively, with a limit of detection (LOD) of 50 μU mL-1. The developed method had excellent properties including a broad linear range, good reproducibility, and simple operation for the clinical diagnosis of CA 125 and CA 15-3 tumor markers. This molecularly imprinted fluorescence sensor has the potential to be an effective clinical tool for the timely screening of breast cancer in human serum samples and OVCAR-3 and MCF-7 cell lines, and can be applied in clinical diagnostics.
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5
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Gao N, Chang J, Dai P, Zhu Z, You H. One-sampling and Rapid Analysis of Cancer Biomarker on A Power-free and Low-cost Microfluidic Chip. ANAL SCI 2021; 37:1695-1700. [PMID: 34024865 DOI: 10.2116/analsci.21p098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Alpha-fetoprotein (AFP) is an important disease biomarker, relating to cancers such as hepatocarcinomas and gastric cancer. However, traditional methods are time-consuming, relied on bulky instruments and trained professionals, cannot satisfy the demand for low cost and point-of-care testing (POCT). In this study, a power-free POCT device was developed for the rapid and low-cost detection of AFP via one-sampling. Based on the principle of sandwich immunofluorescence, the chip is capable of automatically accomplishing on-chip mixing, labeling and capturing procedures, which only require that operator add 40 μL sample into the chip one time. The proposed device is capable of sensitively detecting human AFP in FBS with a dynamic range of 10 - 1000 ng/mL and LOD (1.88 ng/mL) within a short time of 3 min. Predictably, our method holds a great potential to be applied in the POC diagnostics of proteins, especially for some regions that are resource-limited.
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Affiliation(s)
- Nailong Gao
- Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China.,Institute of Intelligent Machines, Chinese Academy of Sciences
| | - Jianguo Chang
- Institute of Intelligent Machines, Chinese Academy of Sciences
| | - Peng Dai
- School of Mechanical Engineering, Guangxi University
| | - Ziming Zhu
- School of Mechanical Engineering, Guangxi University
| | - Hui You
- School of Mechanical Engineering, Guangxi University
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6
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Application of a microfluidic paper-based bioimmunosensor with laser-induced fluorescence detection in the determination of alpha-fetoprotein from serum of hepatopaths. Talanta 2021; 221:121660. [DOI: 10.1016/j.talanta.2020.121660] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 08/19/2020] [Accepted: 09/09/2020] [Indexed: 11/18/2022]
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7
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Shan H, Li X, Liu L, Song D, Wang Z. Recent advances in nanocomposite-based electrochemical aptasensors for the detection of toxins. J Mater Chem B 2020; 8:5808-5825. [PMID: 32538399 DOI: 10.1039/d0tb00705f] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Toxins are one of the major threatening factors to human and animal health, as well as economic growth. There is therefore an urgent demand from various communities to develop novel analytical methods for the sensitive detection of toxins in complex matrixes. Among the as-developed toxin detection strategies, nanocomposite-based aptamer sensors (termed as aptasensors) show tremendous potential for combating toxin pollution; in particular electrochemical (EC) aptasensors have received significant attention because of their unique advantages, including simplicity, rapidness, high sensitivity, low cost and suitability for field-testing. This paper reviewed the recently published approaches for the development of nanocomposite-/nanomaterial-based EC aptasensors for the detection of toxins with high assaying performance, and their potential applications in environmental monitoring, clinical diagnostics, and food safety control by summarizing the detection of different types of toxins, including fungal mycotoxins, algal toxins and bacterial enterotoxins. The effects of nanocomposite properties on the detection performance of EC aptasensors have been fully addressed for supplying readers with a comprehensive understanding of their improvement. The current technical challenges and future prospects of this subject have also been discussed.
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Affiliation(s)
- Hongyan Shan
- College of Chemistry, Jilin University, Changchun 130012, P. R. China
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8
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Recent advances in electrochemiluminescence-based simultaneous detection of multiple targets. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2019.115767] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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9
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Husain RA, Barman SR, Chatterjee S, Khan I, Lin ZH. Enhanced biosensing strategies using electrogenerated chemiluminescence: recent progress and future prospects. J Mater Chem B 2020; 8:3192-3212. [DOI: 10.1039/c9tb02578b] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An overview of enhancement strategies for highly sensitive ECL-based sensing of bioanalytes enabling early detection of cancer.
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Affiliation(s)
- Rashaad A. Husain
- Institute of Biomedical Engineering
- National Tsing Hua University
- Hsinchu 30013
- Taiwan
| | - Snigdha Roy Barman
- Institute of Biomedical Engineering
- National Tsing Hua University
- Hsinchu 30013
- Taiwan
| | - Subhodeep Chatterjee
- Department of Power Mechanical Engineering
- National Tsing Hua University
- Hsinchu 30013
- Taiwan
| | - Imran Khan
- Institute of NanoEngineering and MicroSystems
- National Tsing Hua University
- Hsinchu 30013
- Taiwan
| | - Zong-Hong Lin
- Institute of Biomedical Engineering
- National Tsing Hua University
- Hsinchu 30013
- Taiwan
- Department of Power Mechanical Engineering
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10
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Ma C, Zhao C, Li W, Song Y, Hong C, Qiao X. Sandwich-type electrochemical immunosensor constructed using three-dimensional lamellar stacked CoS 2@C hollow nanotubes prepared by template-free method to detect carcinoembryonic antigen. Anal Chim Acta 2019; 1088:54-62. [PMID: 31623716 DOI: 10.1016/j.aca.2019.09.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 08/29/2019] [Accepted: 09/02/2019] [Indexed: 01/01/2023]
Abstract
Effective treatment of cancer depends on early detection of tumor markers. In this paper, an effective template-free method was used to prepare CoS2@C three-dimensional hollow sheet nanotubes as the matrix of the immunosensor. The unique three-dimensional hybrid hollow tubular nanostructure provides greater contact area and enhanced detection limit. The CoS2@C-NH2-HRP nanomaterial was synthesized as a marker and had a high specific surface area, which can effectively improve the electrocatalytic ability of hydrogen peroxide (H2O2) reduction while increasing the amount of capture-fixed carcinoembryonic antigen antibody (anti-CEA). In addition, the co-bonded horseradish peroxidase (HRP) can further promote the redox of H2O2 and amplify the electrical signal. Carcinoembryonic antigen (CEA) was quantified by immediate current response (i-t), and the prepared immunosensor had good analytical performance under optimized conditions. The current signal and the concentration of CEA were linear in the range of 0.001-80 ng/mL, and the detection limit was 0.33 pg/mL (S/N = 3). The designed immunosensor has good selectivity, repeatability and stability, and the detection of human serum samples shows good performance. Furthermore, electrochemical immunosensor has broad application prospects in the clinical diagnosis of CEA.
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Affiliation(s)
- Chaoyun Ma
- College of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003, PR China
| | - Chulei Zhao
- College of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003, PR China
| | - Wenjun Li
- College of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003, PR China
| | - Yiju Song
- College of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003, PR China
| | - Chenglin Hong
- College of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003, PR China.
| | - Xiuwen Qiao
- College of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003, PR China
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11
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Kim SS, Lee Y, Shin HS, Lee JH. Highly sensitive chemiluminescence enzyme immunoassay for the quantification of carcinoembryonic antigen in the presence of an enhancer and a stabilizer. J Immunol Methods 2019; 471:18-26. [DOI: 10.1016/j.jim.2019.05.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 04/26/2019] [Accepted: 05/22/2019] [Indexed: 10/26/2022]
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12
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Babamiri B, Bahari D, Salimi A. Highly sensitive bioaffinity electrochemiluminescence sensors: Recent advances and future directions. Biosens Bioelectron 2019; 142:111530. [PMID: 31398687 DOI: 10.1016/j.bios.2019.111530] [Citation(s) in RCA: 104] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 07/03/2019] [Accepted: 07/20/2019] [Indexed: 12/20/2022]
Abstract
Electrogenerated chemiluminescence (also called electrochemiluminescence and abbreviated ECL) has attracted much attention in various fields of analysis due to the potential remarkably high sensitivity, extremely wide dynamic range and excellent controllability. Electrochemiluminescence biosensor, by taking the advantage of the selectivity of the biological recognition elements and the high sensitivity of ECL technique was applied as a powerful analytical device for ultrasensitive detection of biomolecule. In this review, we summarize the latest sensing applications of ECL bioanalysis in the field of bio affinity ECL sensors including aptasensors, immunoassays and DNA analysis, cytosensor, molecularly imprinted sensors, ECL resonance energy transfer and ratiometric biosensors and give future perspectives for new developments in ECL analytical technology. Furthermore, the results herein discussed would demonstrate that the use of nanomaterials with unique chemical and physical properties in the ECL biosensing systems is one of the most interesting research lines for the development of ultrasensitive electrochemiluminescence biosensors. In addition, ECL based sensing assays for clinical samples analysis and medical diagnostics and developing of immunosensors, aptasensors and cytosensor for this purpose is also highlighted.
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Affiliation(s)
- Bahareh Babamiri
- Department of Chemistry, University of Kurdistan, 66177-15175, Sanandaj, Iran; Research Center for Nanotechnology, University of Kurdistan, 66177-15175, Sanandaj, Iran
| | - Delnia Bahari
- Department of Chemistry, University of Kurdistan, 66177-15175, Sanandaj, Iran; Research Center for Nanotechnology, University of Kurdistan, 66177-15175, Sanandaj, Iran
| | - Abdollah Salimi
- Department of Chemistry, University of Kurdistan, 66177-15175, Sanandaj, Iran; Research Center for Nanotechnology, University of Kurdistan, 66177-15175, Sanandaj, Iran; Department of Chemistry, University of Western Ontario, N6A 5B7, London, Ontario, Canada.
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13
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An electrochemiluminescence immunosensor based on ZnSe@ZnS QDs composite for CEA detection in human serum. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.05.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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14
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Zhao J, Liang D, Gao S, Hu X, Koh K, Chen H. Analyte-resolved magnetoplasmonic nanocomposite to enhance SPR signals and dual recognition strategy for detection of BNP in serum samples. Biosens Bioelectron 2019; 141:111440. [PMID: 31233987 DOI: 10.1016/j.bios.2019.111440] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 06/12/2019] [Accepted: 06/14/2019] [Indexed: 01/14/2023]
Abstract
B-type natriuretic peptide (BNP) is a short peptide that is considered to be an important heart failure (HF)-related biomarker. Due to its low concentration in the blood and short half-life, the sensitive detection of BNP is a bottleneck for diagnosing patients at early stages of HF. In this paper, we report a facile surface plasmon resonance (SPR) sensor to measure BNP; the sensor is based on aptamer-functionalized Au nanoparticles (GNPs-Apt) and antibody-modified magnetoplasmonic nanoparticles (MNPs-Ab) to enable dual screening of BNP in complex environments. During sensing, BNP forms MNP-Ab/BNP/GNP-Apt nanoconjugates that can be rapidly separated from the complex sample by a magnet to avoid degradation within the analyte's half-life. The developed SPR biosensor shows high selectivity, a wide dynamic response range of BNP concentrations from 100 fg/mL to 10 ng/mL, and a low detection limit of 28.2 fg/mL (S/N = 3). Using the proposed sensor, BNP was successfully detected in clinical samples. Thus, the designed SPR biosensor provides a novel and sensitive sensing platform for BNP detection with potential applications in clinical practice.
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Affiliation(s)
- Jialin Zhao
- Center for Molecular Recognition selectivity and Biosensing, School of Life Sciences, Shanghai University, Shanghai, 200444, China; Shanghai Key Laboratory of Bio-Energy Crop, School of Life Sciences, Shanghai University, Shanghai, 200444, China
| | - Danli Liang
- Center for Molecular Recognition selectivity and Biosensing, School of Life Sciences, Shanghai University, Shanghai, 200444, China
| | - Shouwei Gao
- School of Mechatronic Engineering and Automation, Shanghai University, Shanghai, 200444, China
| | - Xiaojun Hu
- Center for Molecular Recognition selectivity and Biosensing, School of Life Sciences, Shanghai University, Shanghai, 200444, China
| | - Kwangnak Koh
- Institute of General Education, Pusan National University, Busan, 609-735, Republic of Korea
| | - Hongxia Chen
- Center for Molecular Recognition selectivity and Biosensing, School of Life Sciences, Shanghai University, Shanghai, 200444, China.
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15
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Wei L, Zhang Y, Eziz N, Yang Y, Li G, Guan M. An ultrasensitive electrochemiluminescence immunosensor for alpha-fetoprotein based on a poly(aniline-luminol)/graphene oxide nanocomposite. Anal Bioanal Chem 2019; 411:5175-5186. [DOI: 10.1007/s00216-019-01897-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 04/19/2019] [Accepted: 05/06/2019] [Indexed: 11/29/2022]
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16
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Current advances of carbon dots based biosensors for tumor marker detection, cancer cells analysis and bioimaging. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.04.003] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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17
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An infrared IgG immunoassay based on the use of a nanocomposite consisting of silica coated Fe 3O 4 superparticles. Mikrochim Acta 2019; 186:99. [PMID: 30631954 DOI: 10.1007/s00604-018-3219-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 12/28/2018] [Indexed: 02/01/2023]
Abstract
A reliable, rapid and ultrasensitive immunoassay is described for determination of immunoglobulin G (IgG). It is making use of biofunctional magnetite (Fe3O4) superparticles coated with SiO2 and serving as an infrared (IR) probe. The unique IR fingerprint signals originating from the transverse and longitudinal phonon modes, respectively, of the asymmetric stretching of the Si-O-Si bridges display a satisfactory resistance to optical interference from the environment. The adoption of Fe3O4 superparticles instead of Fe3O4 nanoparticles as the magnetic core warrants a controllable structure and a strong magnetic response. This facilitates the efficient purification of the probes and the alleviation of the interfacial resistance between the liquid-solid interfaces by using a magnet. The gold-coated substrate was used to immobilize goat-anti-human IgG. The analyte (human IgG) was incubated with the IR probes, and then captured by the substrate immobilized antibody with the assistance of an external magnetic field. The integral area of the IR absorption band between 1250 cm-1 - 900 cm-1 was chosen for quantitative assay. The limit of detection is 95 fM, which is two orders of magnitude better than that without the magnetic field. The assay time was shortened from 2 h to 1 min. High selectivity, specificity, and long-term stability of the immunoassay were achieved. The performance of the assay when analyzing blood samples confirmed the practicability of the method. Graphical abstract Schematic presentation of the infrared (IR) immunoassay based on Fe3O4 superparticle@SiO2 nanocomposites. The assistance of an external magnetic field reduces the incubation time and improves the detection sensitivity.
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18
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Electrochemiluminescent biosensor with DNA link for selective detection of human IgG based on steric hindrance. Talanta 2018; 194:745-751. [PMID: 30609601 DOI: 10.1016/j.talanta.2018.10.092] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 09/27/2018] [Accepted: 10/27/2018] [Indexed: 12/13/2022]
Abstract
A highly selective DNA-based electrochemiluminescence (ECL) based biosensor is described for the detection of human IgG. It is exploiting the effect of steric hindrance that affects the strength of the ECL signal in the presence of IgG. Digoxin-linked signaling DNA was specifically bound to IgG, and this causes steric hindrance which limits the ability of DNA to hybridize with capturing DNA attached to a gold electrode. Europium (II) doped CdSe quantum dots were covalently linked to the DNA in order to generate the ECL signal. Using this steric hindrance hybridization method, the ECL signal of the biosensor were proportional to the concentration of IgG with a wide linear range and a 14 pM detection limit. Conceivably, the method can be expanded to the detection of a wide range of proteins for which homologous recognition elements are available.
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19
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Zhang X, Zhuang H, Wan X. Hapten Syntheses, Antibody Generation, and Ultrasensitive Enzyme-Linked Immunosorbent Assay for the Determination of Tonalid in Human Blood. ANAL LETT 2018. [DOI: 10.1080/00032719.2017.1392546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Xiaohan Zhang
- School of Environment Science and Technology, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
| | - Huisheng Zhuang
- School of Environment Science and Technology, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
| | - Xu Wan
- Department of Pharmacy, South Campus, Renji Hospital, Affiliated with the School of Medicine, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
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20
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Babamiri B, Salimi A, Hallaj R, Hasanzadeh M. Nickel nanoclusters as a novel emitter for molecularly imprinted electrochemiluminescence based sensor toward nanomolar detection of creatinine. Biosens Bioelectron 2018; 107:272-279. [DOI: 10.1016/j.bios.2018.02.022] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 01/24/2018] [Accepted: 02/07/2018] [Indexed: 01/26/2023]
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21
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Paper-based chemiluminescence immunodevice for the carcinoembryonic antigen by employing multi-enzyme carbon nanosphere signal enhancement. Mikrochim Acta 2018; 185:187. [DOI: 10.1007/s00604-018-2726-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Accepted: 02/08/2018] [Indexed: 12/14/2022]
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22
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Liu X, Jiang H. Construction and Potential Applications of Biosensors for Proteins in Clinical Laboratory Diagnosis. SENSORS (BASEL, SWITZERLAND) 2017; 17:E2805. [PMID: 29207528 PMCID: PMC5750678 DOI: 10.3390/s17122805] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 11/20/2017] [Accepted: 11/30/2017] [Indexed: 12/11/2022]
Abstract
Biosensors for proteins have shown attractive advantages compared to traditional techniques in clinical laboratory diagnosis. In virtue of modern fabrication modes and detection techniques, various immunosensing platforms have been reported on basis of the specific recognition between antigen-antibody pairs. In addition to profit from the development of nanotechnology and molecular biology, diverse fabrication and signal amplification strategies have been designed for detection of protein antigens, which has led to great achievements in fast quantitative and simultaneous testing with extremely high sensitivity and specificity. Besides antigens, determination of antibodies also possesses great significance for clinical laboratory diagnosis. In this review, we will categorize recent immunosensors for proteins by different detection techniques. The basic conception of detection techniques, sensing mechanisms, and the relevant signal amplification strategies are introduced. Since antibodies and antigens have an equal position to each other in immunosensing, all biosensing strategies for antigens can be extended to antibodies under appropriate optimizations. Biosensors for antibodies are summarized, focusing on potential applications in clinical laboratory diagnosis, such as a series of biomarkers for infectious diseases and autoimmune diseases, and an evaluation of vaccine immunity. The excellent performances of these biosensors provide a prospective space for future antibody-detection-based disease serodiagnosis.
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Affiliation(s)
- Xuan Liu
- Department of Clinical Laboratory, The Second Affiliated Hospital of Southeast University, Nanjing 210003, China.
| | - Hui Jiang
- School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China.
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