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Ma Y, Wu M, Mo F, Chen Z, Lu J, Sun D. Enhanced Electrochemical Characterization of the Immune Checkpoint Protein PD-L1 using Aptamer-Functionalized Magnetic Metal-Organic Frameworks. Adv Healthc Mater 2024; 13:e2303103. [PMID: 38164814 DOI: 10.1002/adhm.202303103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 12/04/2023] [Indexed: 01/03/2024]
Abstract
Programmed death ligand 1 (PD-L1) is highly expressed in cancer cells and participates in the immune escape process of tumor cells. However, as one of the most promising biomarkers for cancer immunotherapy monitoring, the key problem ahead of practical usage is how to effectively improve the detection sensitivity of PD-L1. Herein, an electrochemical aptasensor for the evaluation of tumor immunotherapy is developed based on the immune checkpoint protein PD-L1. The fundamental principle of this method involves the utilization of DNA nanotetrahedron (NTH)-based capture probes and aptamer-modified magnetic metal-organic framework nanocomposites as signaling probes. A synergistic enhancement is observed in the electrocatalytic effect between Fe3O4 and UiO-66 porous shells in Fe3O4@UiO-66 nanocomposites. Therefore, the integration of aptamer-modified Fe3O4@UiO-66@Au with NTH-assisted target immobilization as an electrochemical sensing platform can significantly enhance sensitivity and specificity for target detection. This method enables the detection of targets at concentrations as low as 7.76 pg mL-1 over a wide linear range (0.01 to 1000 ng mL-1). The authors have successfully employed this sensor for in situ characterization of PD-L1 on the cell surface and for monitoring changes in PD-L1 expression during drug therapy, providing a cost-effective yet robust alternative to highly expensive and expertise-dependent flow cytometry.
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Affiliation(s)
- Ying Ma
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, China
- Key Specialty of Clinical Pharmacy, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, 510699, China
| | - Maoqiang Wu
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, China
- Key Specialty of Clinical Pharmacy, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, 510699, China
| | - Fayin Mo
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, China
- Key Specialty of Clinical Pharmacy, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, 510699, China
| | - Zuanguang Chen
- National and Local United Engineering Lab of Druggability and New Drugs Evaluation School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Jing Lu
- National and Local United Engineering Lab of Druggability and New Drugs Evaluation School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Duanping Sun
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, China
- Key Specialty of Clinical Pharmacy, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, 510699, China
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Rabiee N, Ahmadi S, Rahimizadeh K, Chen S, Veedu RN. Metallic nanostructure-based aptasensors for robust detection of proteins. NANOSCALE ADVANCES 2024; 6:747-776. [PMID: 38298588 PMCID: PMC10825927 DOI: 10.1039/d3na00765k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 11/29/2023] [Indexed: 02/02/2024]
Abstract
There is a significant need for fast, cost-effective, and highly sensitive protein target detection, particularly in the fields of food, environmental monitoring, and healthcare. The integration of high-affinity aptamers with metal-based nanomaterials has played a crucial role in advancing the development of innovative aptasensors tailored for the precise detection of specific proteins. Aptamers offer several advantages over commonly used molecular recognition methods, such as antibodies. Recently, a variety of metal-based aptasensors have been established. These metallic nanomaterials encompass noble metal nanoparticles, metal oxides, metal-carbon nanotubes, carbon quantum dots, graphene-conjugated metallic nanostructures, as well as their nanocomposites, metal-organic frameworks (MOFs), and MXenes. In general, these materials provide enhanced sensitivity through signal amplification and transduction mechanisms. This review primarily focuses on the advancement of aptasensors based on metallic materials for the highly sensitive detection of protein targets, including enzymes and growth factors. Additionally, it sheds light on the challenges encountered in this field and outlines future prospects. We firmly believe that this review will offer a comprehensive overview and fresh insights into metallic nanomaterials-based aptasensors and their capabilities, paving the way for the development of innovative point-of-care (POC) diagnostic devices.
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Affiliation(s)
- Navid Rabiee
- Centre for Molecular Medicine and Innovative Therapeutics, Health Futures Institute, Murdoch University Perth WA 6150 Australia
- Precision Nucleic Acid Therapeutics, Perron Institute for Neurological and Translational Science Perth WA 6009 Australia
| | - Sepideh Ahmadi
- Student Research Committee, Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Kamal Rahimizadeh
- Centre for Molecular Medicine and Innovative Therapeutics, Health Futures Institute, Murdoch University Perth WA 6150 Australia
- Precision Nucleic Acid Therapeutics, Perron Institute for Neurological and Translational Science Perth WA 6009 Australia
| | - Suxiang Chen
- Centre for Molecular Medicine and Innovative Therapeutics, Health Futures Institute, Murdoch University Perth WA 6150 Australia
- Precision Nucleic Acid Therapeutics, Perron Institute for Neurological and Translational Science Perth WA 6009 Australia
| | - Rakesh N Veedu
- Centre for Molecular Medicine and Innovative Therapeutics, Health Futures Institute, Murdoch University Perth WA 6150 Australia
- Precision Nucleic Acid Therapeutics, Perron Institute for Neurological and Translational Science Perth WA 6009 Australia
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Li HK, An YX, Zhang EH, Zhou SN, Li MX, Li ZJ, Li X, Yuan R, Zhang W, He H. A covalent organic framework nanosheet-based electrochemical aptasensor with sensitive detection performance. Anal Chim Acta 2022; 1223:340204. [DOI: 10.1016/j.aca.2022.340204] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 07/14/2022] [Accepted: 07/24/2022] [Indexed: 01/01/2023]
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Shaban SM, Byeok Jo S, Hafez E, Ho Cho J, Kim DH. A comprehensive overview on alkaline phosphatase targeting and reporting assays. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214567] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Campuzano S, Gamella M, Serafín V, Pedrero M, Yáñez-Sedeño P, Pingarrón JM. Biosensing and Delivery of Nucleic Acids Involving Selected Well-Known and Rising Star Functional Nanomaterials. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1614. [PMID: 31739523 PMCID: PMC6915577 DOI: 10.3390/nano9111614] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 11/10/2019] [Accepted: 11/12/2019] [Indexed: 12/27/2022]
Abstract
In the last fifteen years, the nucleic acid biosensors and delivery area has seen a breakthrough due to the interrelation between the recognition of nucleic acid's high specificity, the great sensitivity of electrochemical and optical transduction and the unprecedented opportunities imparted by nanotechnology. Advances in this area have demonstrated that the assembly of nanoscaled materials allows the performance enhancement, particularly in terms of sensitivity and response time, of functional nucleic acids' biosensing and delivery to a level suitable for the construction of point-of-care diagnostic tools. Consequently, this has propelled detection methods using nanomaterials to the vanguard of the biosensing and delivery research fields. This review overviews the striking advancement in functional nanomaterials' assisted biosensing and delivery of nucleic acids. We highlight the advantages demonstrated by selected well-known and rising star functional nanomaterials (metallic, magnetic and Janus nanomaterials) focusing on the literature produced in the past five years.
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Affiliation(s)
- Susana Campuzano
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain; (M.G.); (V.S.); (M.P.)
| | | | | | | | - Paloma Yáñez-Sedeño
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain; (M.G.); (V.S.); (M.P.)
| | - José Manuel Pingarrón
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain; (M.G.); (V.S.); (M.P.)
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Modh H, Scheper T, Walter JG. Aptamer-Modified Magnetic Beads in Biosensing. SENSORS 2018; 18:s18041041. [PMID: 29601533 PMCID: PMC5948603 DOI: 10.3390/s18041041] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Revised: 03/21/2018] [Accepted: 03/26/2018] [Indexed: 01/27/2023]
Abstract
Magnetic beads (MBs) are versatile tools for the purification, detection, and quantitative analysis of analytes from complex matrices. The superparamagnetic property of magnetic beads qualifies them for various analytical applications. To provide specificity, MBs can be decorated with ligands like aptamers, antibodies and peptides. In this context, aptamers are emerging as particular promising ligands due to a number of advantages. Most importantly, the chemical synthesis of aptamers enables straightforward and controlled chemical modification with linker molecules and dyes. Moreover, aptamers facilitate novel sensing strategies based on their oligonucleotide nature that cannot be realized with conventional peptide-based ligands. Due to these benefits, the combination of aptamers and MBs was already used in various analytical applications which are summarized in this article.
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Affiliation(s)
- Harshvardhan Modh
- Institute of Technical Chemistry, Leibniz University of Hannover, Hannover 30167, Germany.
| | - Thomas Scheper
- Institute of Technical Chemistry, Leibniz University of Hannover, Hannover 30167, Germany.
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A novel gas-phase mono and bimetallic clusters decorated Zno nanorods electrochemical sensor for 4-aminophenol detection. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.01.027] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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8
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Flow injection amperometric sandwich-type aptasensor for the determination of human leukemic lymphoblast cancer cells using MWCNTs-Pd nano/PTCA/aptamer as labeled aptamer for the signal amplification. Anal Chim Acta 2017; 985:61-68. [PMID: 28864195 DOI: 10.1016/j.aca.2017.07.054] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 06/16/2017] [Accepted: 07/21/2017] [Indexed: 12/29/2022]
Abstract
In this research, we demonstrated a flow injection amperometric sandwich-type aptasensor for the determination of human leukemic lymphoblasts (CCRF-CEM) based on poly(3,4-ethylenedioxythiophene) decorated with gold nanoparticles (PEDOT-Aunano) as a nano platform to immobilize thiolated sgc8c aptamer and multiwall carbon nanotubes decorated with palladium nanoparticles/3,4,9,10-perylene tetracarboxylic acid (MWCNTs-Pdnano/PTCA) to fabricate catalytic labeled aptamer. In the proposed sensing strategy, the CCRF-CEM cancer cells were sandwiched between immobilized sgc8c aptamer on PEDOT-Aunano modified surface electrode and catalytic labeled sgc8c aptamer (MWCNTs-Pdnano/PTCA/aptamer). After that, the concentration of CCRF-CEM cancer cells was determined in presence of 0.1 mM hydrogen peroxide (H2O2) as an electroactive component. The attached MWCNTs-Pdnano nanocomposites to CCRF-CEM cancer cells amplified the electrocatalytic reduction of H2O2 and improved the sensitivity of the sensor to CCRF-CEM cancer cells. The MWCNT-Pdnano nanocomposite was characterized with transmission electron microscopy (TEM) and energy dispersive X-ray (EDX). The electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) were used to confirm the stepwise changes in the electrochemical surface properties of the electrode. The proposed sandwich-type electrochemical aptasensor exhibited an excellent analytical performance for the detection of CCRF-CEM cancer cells ranging from 1.0 × 101 to 5.0 × 105 cells mL-1. The limit of detection was 8 cells mL-1. The proposed aptasensor showed high selectivity toward CCRF-CEM cancer cells. The proposed aptasensor was also applied to the determination of CCRF-CEM cancer cells in human serum samples.
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9
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Zhu Y, Liu CL, Xie ZJ, Liu LQ, Peng CF, Xue F. Botryoid-shaped nanoparticles-enhanced ELISA for ochratoxin A. FOOD AGR IMMUNOL 2016. [DOI: 10.1080/09540105.2016.1266602] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
- Yan Zhu
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
| | - Chun-Li Liu
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
| | - Zheng-Jun Xie
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
| | - Li-Qiang Liu
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
| | - Chi-Fang Peng
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
| | - Feng Xue
- Animal, Plant and Food Inspection Center, Jiangsu Entry-Exit Inspection and Quarantine Bureau, Nanjing, People’s Republic of China
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Yáñez-Sedeño P, Campuzano S, Pingarrón JM. Magnetic Particles Coupled to Disposable Screen Printed Transducers for Electrochemical Biosensing. SENSORS 2016; 16:s16101585. [PMID: 27681733 PMCID: PMC5087374 DOI: 10.3390/s16101585] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 09/20/2016] [Accepted: 09/22/2016] [Indexed: 12/28/2022]
Abstract
Ultrasensitive biosensing is currently a growing demand that has led to the development of numerous strategies for signal amplification. In this context, the unique properties of magnetic particles; both of nano- and micro-size dimensions; have proved to be promising materials to be coupled with disposable electrodes for the design of cost-effective electrochemical affinity biosensing platforms. This review addresses, through discussion of selected examples, the way that nano- and micro-magnetic particles (MNPs and MMPs; respectively) have contributed significantly to the development of electrochemical affinity biosensors, including immuno-, DNA, aptamer and other affinity modes. Different aspects such as type of magnetic particles, assay formats, detection techniques, sensitivity, applicability and other relevant characteristics are discussed. Research opportunities and future development trends in this field are also considered.
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Affiliation(s)
- Paloma Yáñez-Sedeño
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| | - Susana Campuzano
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| | - José M Pingarrón
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
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Wang Y, Jiang L, Leng Q, Wu Y, He X, Wang K. Electrochemical sensor for glutathione detection based on mercury ion triggered hybridization chain reaction signal amplification. Biosens Bioelectron 2016; 77:914-20. [DOI: 10.1016/j.bios.2015.10.071] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 10/20/2015] [Accepted: 10/26/2015] [Indexed: 01/12/2023]
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12
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Ma H, Liu J, Ali MM, Mahmood MAI, Labanieh L, Lu M, Iqbal SM, Zhang Q, Zhao W, Wan Y. Nucleic acid aptamers in cancer research, diagnosis and therapy. Chem Soc Rev 2015; 44:1240-56. [PMID: 25561050 DOI: 10.1039/c4cs00357h] [Citation(s) in RCA: 166] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Aptamers are single-stranded DNA or RNA oligomers, identified from a random sequence pool, with the ability to form unique and versatile tertiary structures that bind to cognate molecules with superior specificity. Their small size, excellent chemical stability and low immunogenicity enable them to rival antibodies in cancer imaging and therapy applications. Their facile chemical synthesis, versatility in structural design and engineering, and the ability for site-specific modifications with functional moieties make aptamers excellent recognition motifs for cancer biomarker discovery and detection. Moreover, aptamers can be selected or engineered to regulate cancer protein functions, as well as to guide anti-cancer drug design or screening. This review summarizes their applications in cancer, including cancer biomarker discovery and detection, cancer imaging, cancer therapy, and anti-cancer drug discovery. Although relevant applications are relatively new, the significant progress achieved has demonstrated that aptamers can be promising players in cancer research.
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Affiliation(s)
- Haitao Ma
- The Department of Cardiothoracic Surgery, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou, Jiangsu 215006, China
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Yan M, Bai W, Zhu C, Huang Y, Yan J, Chen A. Design of nuclease-based target recycling signal amplification in aptasensors. Biosens Bioelectron 2015; 77:613-23. [PMID: 26485175 DOI: 10.1016/j.bios.2015.10.015] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 09/21/2015] [Accepted: 10/05/2015] [Indexed: 10/22/2022]
Abstract
Compared with conventional antibody-based immunoassay methods, aptasensors based on nucleic acid aptamer have made at least two significant breakthroughs. One is that aptamers are more easily used for developing various simple and rapid homogeneous detection methods by "sample in signal out" without multi-step washing. The other is that aptamers are more easily employed for developing highly sensitive detection methods by using various nucleic acid-based signal amplification approaches. As many substances playing regulatory roles in physiology or pathology exist at an extremely low concentration and many chemical contaminants occur in trace amounts in food or environment, aptasensors for signal amplification contribute greatly to detection of such targets. Among the signal amplification approaches in highly sensitive aptasensors, the nuclease-based target recycling signal amplification has recently become a research focus because it shows easy design, simple operation, and rapid reaction and can be easily developed for homogenous assay. In this review, we summarized recent advances in the development of various nuclease-based target recycling signal amplification with the aim to provide a general guide for the design of aptamer-based ultrasensitive biosensing assays.
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Affiliation(s)
- Mengmeng Yan
- Institute of Quality Standards and Testing Technology for Agro-products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Science, Beijing 100081, China; Key Laboratory of Agri-Food Quality and Safety, Ministry of Agriculture, Beijing 100081, China
| | - Wenhui Bai
- Institute of Quality Standards and Testing Technology for Agro-products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Science, Beijing 100081, China; Key Laboratory of Agri-Food Quality and Safety, Ministry of Agriculture, Beijing 100081, China
| | - Chao Zhu
- Institute of Quality Standards and Testing Technology for Agro-products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Science, Beijing 100081, China; Key Laboratory of Agri-Food Quality and Safety, Ministry of Agriculture, Beijing 100081, China
| | - Yafei Huang
- Institute of Quality Standards and Testing Technology for Agro-products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Science, Beijing 100081, China; Key Laboratory of Agri-Food Quality and Safety, Ministry of Agriculture, Beijing 100081, China; College of Food Science and Technology, Hainan University, Haikou 570228, China
| | - Jiao Yan
- Institute of Quality Standards and Testing Technology for Agro-products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Science, Beijing 100081, China; Key Laboratory of Agri-Food Quality and Safety, Ministry of Agriculture, Beijing 100081, China; College of Food Science and Technology, Hainan University, Haikou 570228, China
| | - Ailiang Chen
- Institute of Quality Standards and Testing Technology for Agro-products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Science, Beijing 100081, China; Key Laboratory of Agri-Food Quality and Safety, Ministry of Agriculture, Beijing 100081, China.
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Gao F, Qian Y, Zhang L, Dai S, Lan Y, Zhang Y, Du L, Tang D. Target catalyzed hairpin assembly for constructing a ratiometric electrochemical aptasensor. Biosens Bioelectron 2015; 71:158-163. [PMID: 25897885 DOI: 10.1016/j.bios.2015.04.040] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 03/27/2015] [Accepted: 04/13/2015] [Indexed: 11/15/2022]
Abstract
In this paper, we develop a novel dual-signaling amplified aptasensor for protein detection via target-catalyzed hairpin assembly. Thrombin was chosen as a model target. This aptasensor contains two DNA hairpins termed as H1 and H2. H1, which is modified at its 3' ends with a methylene blue (MB), consists of the aptamer sequence of human thrombin. Meanwhile, H2 which is modified at its 3' ends with a ferrocene (Fc), is partially complementary to H1. Upon the addition of target protein, it can facilitate the opening of the hairpin structure of H1 and thus accelerate the hybridization between H1 and H2, the target protein can be displaced from hairpin H1 by hairpin H2 through a process similar to DNA branch migration. The released target found another H1 to trigger the cycle, resulting in the multiplication of the Fc confined near the GE surface and MB away from the GE surface. When IFc/IMB is used as the response signal for quantitative determination of thrombin, the detection limit (41 fM) is much lower than that by using either MB or Fc alone. This new dual-signaling aptasensor is readily regenerated and shows good response toward the target. Furthermore, this amplified aptasensor shows high selectivity toward its target protein. The clever combination of the functional DNA hairpin and the novel device achieved a ratiometric electrochemical aptasensor, which could be used as a simple, sensitive high repeatability and selective platform for target protein detection.
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Affiliation(s)
- Fenglei Gao
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical College, 221004 Xuzhou, China.
| | - Yong Qian
- Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, East China Institute of Technology, Nanchang, Jiangxi 330013, China
| | - Lei Zhang
- Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, East China Institute of Technology, Nanchang, Jiangxi 330013, China
| | - Shizhen Dai
- Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, East China Institute of Technology, Nanchang, Jiangxi 330013, China
| | - Yanfei Lan
- Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, East China Institute of Technology, Nanchang, Jiangxi 330013, China
| | - Yu Zhang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical College, 221004 Xuzhou, China
| | - Lili Du
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical College, 221004 Xuzhou, China
| | - Daoquan Tang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical College, 221004 Xuzhou, China
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Jing P, Xu W, Yi H, Wu Y, Bai L, Yuan R. An amplified electrochemical aptasensor for thrombin detection based on pseudobienzymic Fe3O4-Au nanocomposites and electroactive hemin/G-quadruplex as signal enhancers. Analyst 2014; 139:1756-61. [PMID: 24519466 DOI: 10.1039/c3an02237d] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A sensitive and selective electrochemical aptasensor for thrombin detection was constructed based on hemin/G-quadruplex as the signal label and Fe3O4-Au nanocomposites with glucose oxidase (GOx-) and peroxide-mimicking enzyme activity as the signal enhancers. Due to their large surface area and good biocompatibility, Fe3O4-Au nanocomposites were employed to immobilize electroactive hemin/G-quadruplex, which was formed by the conjugation between a single-stranded guanine-rich nucleic acid and hemin. Based on the GOx-mimicking enzyme activity, Au nanoparticles on the surface of the Fe3O4-Au nanocomposites effectively catalyzed the oxidization of glucose in the presence of dissolved O2, accompanied by the production of H2O2. Both the Fe3O4 cores of Fe3O4-Au nanocomposites and hemin/G-quadruplex with H2O2-mimicking enzyme activity could catalyze the reduction of the generated H2O2, which promoted the electron transfer of hemin and amplified the electrochemical signal. The proposed electrochemical aptasensor had a wide dynamic linear range of 0.1 pM to 20 nM with a lower detection limit of 0.013 pM, which provided a promising method for a sensitive assay for the detection of proteins in electrochemical aptasensors.
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Affiliation(s)
- Pei Jing
- Education Ministry Key Laboratory on Luminescence and Real-TimeAnalysis, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
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Liu YM, Zhou M, Liu YY, Shi GF, Zhang JJ, Cao JT, Huang KJ, Chen YH. Fabrication of electrochemiluminescence aptasensor based on in situ growth of gold nanoparticles on layered molybdenum disulfide for sensitive detection of platelet-derived growth factor-BB. RSC Adv 2014. [DOI: 10.1039/c4ra02162b] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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17
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Zhang X, Reeves DB, Perreard IM, Kett WC, Griswold KE, Gimi B, Weaver JB. Molecular sensing with magnetic nanoparticles using magnetic spectroscopy of nanoparticle Brownian motion. Biosens Bioelectron 2013; 50:441-6. [PMID: 23896525 PMCID: PMC3844855 DOI: 10.1016/j.bios.2013.06.049] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 06/20/2013] [Accepted: 06/24/2013] [Indexed: 01/02/2023]
Abstract
Functionalized magnetic nanoparticles (mNPs) have shown promise in biosensing and other biomedical applications. Here we use functionalized mNPs to develop a highly sensitive, versatile sensing strategy required in practical biological assays and potentially in vivo analysis. We demonstrate a new sensing scheme based on magnetic spectroscopy of nanoparticle Brownian motion (MSB) to quantitatively detect molecular targets. MSB uses the harmonics of oscillating mNPs as a metric for the freedom of rotational motion, thus reflecting the bound state of the mNP. The harmonics can be detected in vivo from nanogram quantities of iron within 5s. Using a streptavidin-biotin binding system, we show that the detection limit of the current MSB technique is lower than 150 pM (0.075 pmole), which is much more sensitive than previously reported techniques based on mNP detection. Using mNPs conjugated with two anti-thrombin DNA aptamers, we show that thrombin can be detected with high sensitivity (4 nM or 2 pmole). A DNA-DNA interaction was also investigated. The results demonstrated that sequence selective DNA detection can be achieved with 100 pM (0.05 pmole) sensitivity. The results of using MSB to sense these interactions, show that the MSB based sensing technique can achieve rapid measurement (within 10s), and is suitable for detecting and quantifying a wide range of biomarkers or analytes. It has the potential to be applied in variety of biomedical applications or diagnostic analyses.
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Affiliation(s)
- Xiaojuan Zhang
- Department of Radiology, Geisel School of Medicine, Dartmouth College, 1 Rope Ferry Road. Hanover, NH 03755-1404, United States
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A signal amplification strategy using the cascade catalysis of gold nanoclusters and glucose dehydrogenase for ultrasensitive detection of thrombin. Biosens Bioelectron 2013; 50:161-6. [PMID: 23850783 DOI: 10.1016/j.bios.2013.06.035] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2013] [Revised: 06/12/2013] [Accepted: 06/14/2013] [Indexed: 02/05/2023]
Abstract
This work reports a novel signal amplification strategy for ultrasensitive detection of thrombin by cascade catalysis of gold nanoclusters (AuNCs) and glucose dehydrogenase (GDH). Herein, the AuNCs prepared by using polyamidoamine dendrimer as template were constructed not only as nanocarriers for anchoring the large amounts of secondary thrombin aptamers but also as nanocatalysts to catalyze the oxidation of NADH efficiently. Moreover, a large amount of GDH was loaded through the immobilization technology of DNA hybridization and a large amount of toluidine blue (Tb) was intercalated into the DNA grooves via electrostatic interaction. Significantly, the electrochemical signal was greatly enhanced based on cascade catalysis: firstly, GDH catalyzed the oxidation of glucose to gluconolactone with the concomitant generation of NADH in the presence of NAD(+). Then, AuNCs as nanocatalysts could effectively catalyze NADH to produce NAD(+) with the help of Tb as redox probe. Under the optimal conditions, the proposed aptasensor exhibits a linear range of 1.0×10(-14)-5×10(-9) M with a low detection limit of 3.3×10(-15) M for thrombin detection and shows high sensitivity and good specificity.
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