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Walgama C, Raj N. Silver nanoparticles in electrochemical immunosensing and the emergence of silver-gold galvanic exchange detection. Chem Commun (Camb) 2023; 59:11161-11173. [PMID: 37603415 DOI: 10.1039/d3cc02561f] [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: 08/23/2023]
Abstract
Nanoparticle-based electrochemical immunosensors demonstrate high sensitivity toward biomarker detection due to the large surface area of the nanoparticles and their ability to amplify the signal of the target molecule. Additionally, they have a fast response time, relatively lower cost, and can be easily miniaturized for point-of-care applications. Among noble metals, silver nanoparticles (AgNPs) have been extensively used in electrochemical sensors due to their unique properties, such as catalytic activity and excellent electrical conductivity. This Feature Article describes six approaches for incorporating AgNPs in electrochemical platforms, featuring the most recent developments in the silver-gold galvanic exchange-based detection strategy. With a few exceptions, many of these detection methods use AgNP oxidation into Ag+ ions, followed by electrodeposition of Ag+ ions onto the working electrode as zero-valent Ag metal and a final stripping step using a voltammetric technique. Combining these steps provides desirable low detection limits and good sensitivity for various biomarkers. A few other methods involved the reduction of Ag+ ions and depositing them as Ag metal onto the electrode using a reagent mixture so that the striping analysis could be performed. Typically, this reagent mixture includes Ag+ ions, a reducing agent, or an enzyme substrate. Besides, AgNPs have also been directly used to modify the surface of electrodes to facilitate kinetically favored redox-mediated electrochemical reactions. In addition to Ag detection methods, this report will also provide recent examples to illustrate how the size and shape of AgNPs impact the detection limits and sensitivity of an electrochemical assay. Finally, we discuss recent developments in lab-on-a-chip type immunosensors designed explicitly for Ag-based metalloimmunoassay detection, and we envision that this article will provide a comprehensive summary of the operational principles and new insights into such immunoassay systems.
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Affiliation(s)
- Charuksha Walgama
- Department of Physical & Applied Sciences, University of Houston-Clear Lake, 2700 Bay Area Boulevard, Houston, TX 77058, USA.
| | - Nikhil Raj
- Amgen Inc, 1 Amgen Center Dr, Thousand Oaks, CA 91320, USA
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Makhneva E, Sklenárová D, Brandmeier JC, Hlaváček A, Gorris HH, Skládal P, Farka Z. Influence of Label and Solid Support on the Performance of Heterogeneous Immunoassays. Anal Chem 2022; 94:16376-16383. [DOI: 10.1021/acs.analchem.2c03543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Ekaterina Makhneva
- Department of Biochemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Dorota Sklenárová
- Department of Biochemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
- CEITEC MU, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Julian C. Brandmeier
- Department of Biochemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
- Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, 93053 Regensburg, Germany
| | - Antonín Hlaváček
- Institute of Analytical Chemistry of the Czech Academy of Sciences, Veveří 967, 602 00 Brno, Czech Republic
| | - Hans H. Gorris
- Department of Biochemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Petr Skládal
- Department of Biochemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
- CEITEC MU, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Zdeněk Farka
- Department of Biochemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
- CEITEC MU, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
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Hu T, Wu Z, Sang W, Ding B, Chen K, Li X, Shen Y, Ni Z. A sensitive electrochemical platform integrated with a 3D graphene aerogel for point-of-care testing for tumor markers. J Mater Chem B 2022; 10:6928-6938. [PMID: 35983886 DOI: 10.1039/d2tb00846g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Point-of-care testing (POCT) of tumor markers, such as alpha-fetoprotein (AFP) and carcinoembryonic antigen (CEA), can be used for the early diagnosis of cancer. In this paper, a highly sensitive electrochemical immuno-biochip based on a porous three-dimensional graphene aerogel (3D-GA) is presented to detect multiple tumor biomarkers and exosomes. The 3D-GA was prepared via in situ chemical reduction of graphene oxide with L-ascorbic acid and then dehydration by freeze-drying. The obtained 3D-GA exhibits a large specific surface area of 125.3 m2 g-1 due to its intrinsic 3D porous architecture. After chemical activation and modification of the 3D-GA, the prepared microfluidic biochip can be used for detecting various tumor markers in liquid samples via electrochemical impedance spectroscopy (EIS). The electrochemical platform with only 5 μL sample achieved a broad detection range of 1.0 × 10-8-1.0 × 10-5 and 1.0 × 10-8-5.0 × 10-4 mg mL-1 for AFP and CEA, respectively, and a low limit of detection (LOD) of 7.9 and 6.2 pg mL-1 for AFP and CEA respectively, which was much better than the outcomes of many other reports. Moreover, the biochip determined the tumor cell-derived exosomes with a low LOD of 10 particles per μL in the PBS solution and an average recovery rate of ∼90% in the diluted serum.
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Affiliation(s)
- Tao Hu
- Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast University, Jiulong Lake Campus, Nanjing 211189, China.
| | - Zihao Wu
- Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast University, Jiulong Lake Campus, Nanjing 211189, China.
| | - Wen Sang
- Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast University, Jiulong Lake Campus, Nanjing 211189, China.
| | - Bo Ding
- Department of Obstetrics and Gynecology, Zhongda Hospital, School of Medicine, Southeast University, China.
| | - Ke Chen
- Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast University, Jiulong Lake Campus, Nanjing 211189, China.
| | - Xiao Li
- Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast University, Jiulong Lake Campus, Nanjing 211189, China.
| | - Yang Shen
- Department of Obstetrics and Gynecology, Zhongda Hospital, School of Medicine, Southeast University, China.
| | - Zhonghua Ni
- Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast University, Jiulong Lake Campus, Nanjing 211189, China.
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Nanotechnology-based approaches for effective detection of tumor markers: A comprehensive state-of-the-art review. Int J Biol Macromol 2022; 195:356-383. [PMID: 34920057 DOI: 10.1016/j.ijbiomac.2021.12.052] [Citation(s) in RCA: 58] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 12/07/2021] [Accepted: 12/08/2021] [Indexed: 02/08/2023]
Abstract
As well-appreciated biomarkers, tumor markers have been spotlighted as reliable tools for predicting the behavior of different tumors and helping clinicians ascertain the type of molecular mechanism of tumorigenesis. The sensitivity and specificity of these markers have made them an object of even broader interest for sensitive detection and staging of various cancers. Enzyme-linked immunosorbent assay (ELISA), fluorescence-based, mass-based, and electrochemical-based detections are current techniques for sensing tumor markers. Although some of these techniques provide good selectivity, certain obstacles, including a low sample concentration or difficulty carrying out the measurement, limit their application. With the advent of nanotechnology, many studies have been carried out to synthesize and employ nanomaterials (NMs) in sensing techniques to determine these tumor markers at low concentrations. The fabrication, sensitivity, design, and multiplexing of sensing techniques have been uplifted due to the attractive features of NMs. Various NMs, such as magnetic and metal nanoparticles, up-conversion NPs, carbon nanotubes (CNTs), carbon-based NMs, quantum dots (QDs), and graphene-based nanosensors, hyperbranched polymers, optical nanosensors, piezoelectric biosensors, paper-based biosensors, microfluidic-based lab-on-chip sensors, and hybrid NMs have proven effective in detecting tumor markers with great sensitivity and selectivity. This review summarizes various categories of NMs for detecting these valuable markers, such as prostate-specific antigen (PSA), human carcinoembryonic antigen (CEA), alpha-fetoprotein (AFP), human chorionic gonadotropin (hCG), human epidermal growth factor receptor-2 (HER2), cancer antigen 125 (CA125), cancer antigen 15-3 (CA15-3, MUC1), and cancer antigen 19-9 (CA19-9), and highlights recent nanotechnology-based advancements in detection of these prognostic biomarkers.
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Özyurt C, Uludağ İ, İnce B, Sezgintürk MK. Biosensing strategies for diagnosis of prostate specific antigen. J Pharm Biomed Anal 2021; 209:114535. [PMID: 34954466 DOI: 10.1016/j.jpba.2021.114535] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 11/29/2021] [Accepted: 12/09/2021] [Indexed: 01/05/2023]
Abstract
Almost from the time of its discovery, the prostate specific antigen (PSA) has been one of the most accurate and most extensively studied indicators of prostate cancer (PC). Because of advancements in biosensing systems and technology, PSA analysis methods have been substantially updated and enhanced as compared to their first instances. With the development of techniques in biosensor technology, the number of PSA biosensors that can be used in the biomedical sector is increasing year by year. Many different recognition elements and transducers have been used in the development of biosensor systems that exhibit high sensitivity, selectivity, and specificity. Here in this review, we provide a current overview of the different approaches to PSA detection.
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Affiliation(s)
- Canan Özyurt
- Department of Chemistry and Chemical Processing Technologies, Lapseki Vocational School, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - İnci Uludağ
- Bioengineering Department, Engineering Faculty, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Bahar İnce
- Bioengineering Department, Engineering Faculty, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Mustafa Kemal Sezgintürk
- Bioengineering Department, Engineering Faculty, Çanakkale Onsekiz Mart University, Çanakkale, Turkey.
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