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Stuart DD, Van Zant W, Valiulis S, Malinick AS, Hanson V, Cheng Q. Trends in surface plasmon resonance biosensing: materials, methods, and machine learning. Anal Bioanal Chem 2024:10.1007/s00216-024-05367-w. [PMID: 38839686 DOI: 10.1007/s00216-024-05367-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 05/13/2024] [Accepted: 05/27/2024] [Indexed: 06/07/2024]
Abstract
Surface plasmon resonance (SPR) proves to be one of the most effective methods of label-free detection and has been integral for the study of biomolecular interactions and the development of biosensors. This trend delves into the latest SPR research and progress built upon the Kretschmann configuration, a pivotal platform, and highlights three key developments that have enhanced the capabilities of the technique. We will first cover a range of explorations of novel plasmonic materials that have shaped SPR performance. Innovative signal transduction and collection, which leverages traditional materials and emerging alternatives, will then be discussed. Finally, the evolving landscape of data analysis, including the integration of machine learning algorithms to navigate complex SPR datasets, will be reviewed. We will also discuss the implementation of these improvements that have enabled new biosensing functions. These advancements not only pave the way for enhanced biosensing in general but also open new avenues for the technique to play a more significant role in research concerning human health.
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Affiliation(s)
- Daniel D Stuart
- Department of Chemistry, University of California, Riverside, CA, 92521, USA
| | - Westley Van Zant
- Department of Chemistry, University of California, Riverside, CA, 92521, USA
| | - Santino Valiulis
- Department of Chemistry, University of California, Riverside, CA, 92521, USA
| | | | - Victor Hanson
- Department of Chemistry, University of California, Riverside, CA, 92521, USA
| | - Quan Cheng
- Department of Chemistry, University of California, Riverside, CA, 92521, USA.
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2
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Alatzoglou C, Tzianni EI, Patila M, Trachioti MG, Prodromidis MI, Stamatis H. Structure-Function Studies of Glucose Oxidase in the Presence of Carbon Nanotubes and Bio-Graphene for the Development of Electrochemical Glucose Biosensors. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 14:85. [PMID: 38202540 PMCID: PMC10780548 DOI: 10.3390/nano14010085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 12/20/2023] [Accepted: 12/25/2023] [Indexed: 01/12/2024]
Abstract
In this work, we investigated the effect of multi-walled carbon nanotubes (MWCNTs) and bio-graphene (bG) on the structure and activity of glucose oxidase (GOx), as well as on the performance of the respective electrochemical glucose biosensors. Various spectroscopic techniques were applied to evaluate conformational changes in GOx molecules induced by the presence of MWCNTs and bG. The results showed that MWCNTs induced changes in the flavin adenine dinucleotide (FAD) prosthetic group of GOx, and the tryptophan residues were exposed to a more hydrophobic environment. Moreover, MWCNTs caused protein unfolding and conversion of α-helix to β-sheet structure, whereas bG did not affect the secondary and tertiary structure of GOx. The effect of the structural changes was mirrored by a decrease in the activity of GOx (7%) in the presence of MWCNTs, whereas the enzyme preserved its activity in the presence of bG. The beneficial properties of bG over MWCNTs on GOx activity were further supported by electrochemical data at two glucose biosensors based on GOx entrapped in chitosan gel in the presence of bG or MWCNTs. bG-based biosensors exhibited a 1.33-fold increased sensitivity and improved reproducibility for determining glucose over the sweat-relevant concentration range of glucose.
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Affiliation(s)
- Christina Alatzoglou
- Biotechnology Laboratory, Department of Biological Applications and Technologies, University of Ioannina, 45110 Ioannina, Greece; (C.A.); (M.P.)
| | - Eleni I. Tzianni
- Laboratory of Analytical Chemistry, University of Ioannina, 45110 Ioannina, Greece; (E.I.T.); (M.G.T.)
| | - Michaela Patila
- Biotechnology Laboratory, Department of Biological Applications and Technologies, University of Ioannina, 45110 Ioannina, Greece; (C.A.); (M.P.)
| | - Maria G. Trachioti
- Laboratory of Analytical Chemistry, University of Ioannina, 45110 Ioannina, Greece; (E.I.T.); (M.G.T.)
| | - Mamas I. Prodromidis
- Laboratory of Analytical Chemistry, University of Ioannina, 45110 Ioannina, Greece; (E.I.T.); (M.G.T.)
| | - Haralambos Stamatis
- Biotechnology Laboratory, Department of Biological Applications and Technologies, University of Ioannina, 45110 Ioannina, Greece; (C.A.); (M.P.)
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Li Y, Hu Q, Zhang J, Zhou H, Wang N, Fang Y, Cui B. T4PPVB-COP composite-driven innovative electrochemiluminescence aptasensor for ultra-sensitive detection of chlorpyrifos. Food Chem 2023; 427:136713. [PMID: 37390738 DOI: 10.1016/j.foodchem.2023.136713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 06/15/2023] [Accepted: 06/21/2023] [Indexed: 07/02/2023]
Abstract
Herein, an enhanced electrochemiluminescence (ECL) aptasensor driven by a complex (T4PPVB-COP@CdS QDs) with large specific surface area and high stability was constructed for highly sensitive detection of chlorpyrifos (CPF), using electrostatic interactions and signal amplification techniques. In the presence of CPF, the specific binding between the aptamer and CPF caused partial detachment of the aptamer from the sensor, thus restoring the ECL signal. Notably, gold nanoparticles functionalized with streptavidin (SA) as signal enhancers further amplified the ECL signal in specific interactions with aptamers, thereby improving the sensitivity of the assay. Based on this, the proposed ECL aptasensor demonstrated significant detection performance for CPF with a linear range of 1-107 pg/mL and a LOD of 0.34 pg/mL. Furthermore, the feasibility of the ECL aptasensor was validated by the detection and analysis of CPF in real samples, which also provided a broad reference value for bioanalysis.
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Affiliation(s)
- Yanping Li
- School of Food Science and Engineering, State Key Laboratory of Biobased Material and Green Papermaking, School of Materials Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Qiong Hu
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science, Yulin Normal University, Yulin 537000, Guangxi, China
| | - Jihui Zhang
- School of Food Science and Engineering, State Key Laboratory of Biobased Material and Green Papermaking, School of Materials Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Hong Zhou
- School of Food Science and Engineering, State Key Laboratory of Biobased Material and Green Papermaking, School of Materials Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Na Wang
- School of Food Science and Engineering, State Key Laboratory of Biobased Material and Green Papermaking, School of Materials Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Yishan Fang
- School of Food Science and Engineering, State Key Laboratory of Biobased Material and Green Papermaking, School of Materials Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
| | - Bo Cui
- School of Food Science and Engineering, State Key Laboratory of Biobased Material and Green Papermaking, School of Materials Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
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Jiang S, Ren J, Zhang Q, Liu W, Liu H, Xu Q, Tian X, Zhang CY. Construction of a Dendritic Nanoassembly-Based Fluorescent Biosensor for Electrostatic Interaction-Independent and Label-Free Measurement of Human Poly(ADP-ribose) Polymerase 1 in Lung Tissues. Anal Chem 2023; 95:11815-11822. [PMID: 37489894 DOI: 10.1021/acs.analchem.3c02376] [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: 07/26/2023]
Abstract
Poly(ADP-ribose) polymerase 1 (PARP-1) is responsible for catalyzing the creation of poly(ADP-ribose) polymer and involved in DNA replication and repair. Sensitive measurement of PARP-1 is critical for clinical diagnosis. However, the conventional electrostatic attraction-based PAPR-1 assays usually involve laborious procedures, poor sensitivity, and false positives. Herein, we demonstrate the construction of a dendritic nanoassembly-based fluorescent biosensor for electrostatic interaction-independent and label-free measurement of human PARP-1 in lung tumor tissues. When PARP-1 is present, the specific double-stranded DNA (dsDNA)-activated PARP-1 transfers the ADP-ribosyl group from nicotinamide adenine dinucleotide (NAD+)/biotinylated NAD+ to the PARP-1 itself, resulting in the formation of biotinylated dsDNA-PARP-1-PAR polymer bioconjugates that can be captured by magnetic beads. Upon the addition of TdT, APE1, and NH2-modified T-rich probe, the captured dsDNAs with dual 3'-OH termini initiate TdT-activated APE1-mediated hyperbranched amplification to produce abundant dendritic DNA nanoassemblies that can be stained by SYBR Green I to generate a high fluorescence signal. This biosensor is characterized by a template-free, electrostatic interaction-independent, high sensitivity, and label-free assay. It enables rapid (less than 3 h) measurement of PARP-1 with a limit of detection of 4.37 × 10-8 U/μL and accurate measurement of cellular PARP-1 activity with single-cell sensitivity. Moreover, it is capable of screening potential inhibitors and discriminating the PARP-1 level in normal person tissues and lung cancer patient tissues, with great potential in PARP-1-related clinical diagnosis and drug discovery.
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Affiliation(s)
- Su Jiang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
| | - Jingyi Ren
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
| | - Qian Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
| | - Wenjing Liu
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Hao Liu
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Qinfeng Xu
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Xiaorui Tian
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
| | - Chun-Yang Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
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Anbiaee G, Khoshbin Z, Zahraee H, Ramezani M, Alibolandi M, Abnous K, Taghdisi SM. Exonuclease-based aptasensors: Promising for food safety and diagnostic aims. Talanta 2023; 259:124500. [PMID: 37001398 DOI: 10.1016/j.talanta.2023.124500] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 03/21/2023] [Accepted: 03/28/2023] [Indexed: 04/07/2023]
Abstract
As of today's requirement, developing cost-effective smart sensing tools with ultrahigh sensitivity for food safety insurance is of special importance. For this purpose, aptamer-based biosensors (aptasensors) powered by the superiorities of the recycling signal amplification strategies have been expanded especially. Target recycling supported by enzymes is an appealing approach for implementing signal amplification. As the supreme biocatalyst enzymes, exonucleases can inaugurate signal improvement by involving a single target in a process would result in appreciable repeating cycles of the cleavage of the phosphodiester bonds between the building blocks of the nucleic acid strands, and also, their terminals. Although there are diverse substances for catalyzing amplification strategies, including nanoparticles, carbon-based nanocomposites, and quantum dots (QDs), exonucleases are of superiority over them by simplifying the amplification process with no need for the complicated pre-treatment processes. The outstanding selectivity and great sensitivity of the aptasensors tuned by amplification potency of exonucleases nominate them as the promising sensing tools for label-free, ease-of-use, cost-effective, and real-time diagnosis of diverse targets. Here, we summarize the achievements and perspectives in the scientific branch of aptasensor design for the qualitative monitoring of diverse targets by cooperation of exonucleases with the conspicuous potential for the signal amplification. Finally, some results are expressed to provide a comprehensive viewpoint for developing novel nuclease-based aptasensors in the future.
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Affiliation(s)
- Ghasem Anbiaee
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Zahra Khoshbin
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hamed Zahraee
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Ramezani
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mona Alibolandi
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Khalil Abnous
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Seyed Mohammad Taghdisi
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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Liu G, La M, Wang J, Liu J, Han Y, Liu L. Magnetically Assisted Immobilization-Free Detection of microRNAs Based on the Signal Amplification of Duplex-Specific Nuclease. BIOSENSORS 2023; 13:699. [PMID: 37504098 PMCID: PMC10437004 DOI: 10.3390/bios13070699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 06/15/2023] [Accepted: 06/23/2023] [Indexed: 07/29/2023]
Abstract
The double specific nuclease (DSN)-based methods for microRNAs (miRNAs) detection usually require the immobilization of DNA probes on a solid surface. However, such strategies have the drawbacks of low hybridization and cleavage efficiency caused by steric hindrance effect and high salt concentration on the solid surface. Herein, we proposed an immobilization-free method for miRNA detection on the basic of DSN-assisted signal amplification. The biotin- and fluorophore-labeled probes were captured by streptavidin-modified magnetic beads through streptavidin-biotin interactions, thus producing a poor fluorescence signal. Once the DNA probes were hybridized with target miRNA in solution to form DNA-miRNA duplexes, DNA stands in the duplexes would be selectively digested by DSN. The released target miRNA could initiate the next hybridization/cleavage recycling in the homogeneous solution, finally resulting in the release of numerous fluorophore-labeled fragments. The released fluorophores remained in solution and emitted strong fluorescence after treatment by the streptavidin-modified magnetic beads. The immobilization-free method achieved the assays of miRNA-21 with a detection limit down to 0.01 pM. It was employed to evaluate the expression levels of miRNA-21 in different cancer cells with satisfactory results.
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Affiliation(s)
- Gang Liu
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Ming La
- School of Chemistry and Environmental Engineering, Pingdingshan University, Pingdingshan 467000, China
| | - Jiwei Wang
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Jiawen Liu
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Yongjun Han
- School of Chemistry and Environmental Engineering, Pingdingshan University, Pingdingshan 467000, China
| | - Lin Liu
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
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Recent advances in surface plasmon resonance imaging and biological applications. Talanta 2023; 255:124213. [PMID: 36584617 DOI: 10.1016/j.talanta.2022.124213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 12/19/2022] [Accepted: 12/20/2022] [Indexed: 12/28/2022]
Abstract
Surface Plasmon Resonance Imaging (SPRI) is a robust technique for visualizing refractive index changes, which enables researchers to observe interactions between nanoscale objects in an imaging manner. In the past period, scholars have been attracted by the Prism-Coupled and Non-prism Coupled configurations of SPRI and have published numerous experimental results. This review describes the principle of SPRI and discusses recent developments in Prism-Coupled and Non-prism Coupled SPRI techniques in detail, respectively. And then, major advances in biological applications of SPRI are reviewed, including four sub-fields (cells, viruses, bacteria, exosomes, and biomolecules). The purpose is to briefly summarize the recent advances of SPRI and provide an outlook on the development of SPRI in various fields.
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Liu Q, Liu J, He N, Zhang M, Wu L, Chen X, Zhu J, Ran F, Chen Q, Zhang H. CRISPR/Cas12a Coupling with Magnetic Nanoparticles and Cascaded Strand Displacement Reaction for Ultrasensitive Fluorescence Determination of Exosomal miR-21. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27165338. [PMID: 36014577 PMCID: PMC9414586 DOI: 10.3390/molecules27165338] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/13/2022] [Accepted: 08/18/2022] [Indexed: 11/16/2022]
Abstract
Exosomal MicroRNA-21 (miRNA-21, miR-21) is significantly up-regulated in blood samples of patients with lung cancer. Exosomal-derived miR-21 can be used as a promising biomarker for the early diagnosis of lung cancer. This paper develops a fluorescent biosensor based on the combination of magnetic nanoparticles (MNPs), cascade strand displacement reaction (CSDR) and CRISPR/Cas12a to detect the exosomal miR-21 from lung cancer. The powerful separation performance of MNPs can eliminate the potential interference of matrix and reduce the background signal, which is very beneficial for the improvement of specificity and sensitivity. The CSDR can specifically transform one miR-21 into plenty of DNA which can specifically trigger the trans-cleavage nuclease activity of Cas12a, resulting in the cleavage of ssDNA bi-labeled with fluorescent and a quencher. Under the optimized experimental conditions, the developed fluorescence biosensor exhibited high sensitivity and specificity towards the determination of exosomal-derived miR-21 with a linear range from 10 to 1 × 105 fM and a low detection limit of about 0.89 fM. Most importantly, this method can be successfully applied to distinguish the exosomal miR-21 from the lung cancer patients and the healthy people.
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Affiliation(s)
- Qing Liu
- Oncology Department, Fujian Medical University Union Hospital, Fujian Provincial Key Laboratory of Translational Cancer Medicine, Fuzhou 350001, China
| | - Jingjian Liu
- Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan 442008, China
| | - Na He
- Shenzhen Baoan Authentic TCM Therapy Hospital, Shenzhen 518101, China
| | - Moli Zhang
- Shenzhen Baoan Authentic TCM Therapy Hospital, Shenzhen 518101, China
| | - Lun Wu
- Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan 442008, China
| | - Xiyu Chen
- Shenzhen Baoan Authentic TCM Therapy Hospital, Shenzhen 518101, China
| | - Jun Zhu
- Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan 442008, China
| | - Fengying Ran
- Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan 442008, China
| | - Qinhua Chen
- Shenzhen Baoan Authentic TCM Therapy Hospital, Shenzhen 518101, China
- Correspondence: (Q.C.); (H.Z.)
| | - Hua Zhang
- Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan 442008, China
- Correspondence: (Q.C.); (H.Z.)
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Sun T, Li M, Zhao F, Liu L. Surface Plasmon Resonance Biosensors with Magnetic Sandwich Hybrids for Signal Amplification. BIOSENSORS 2022; 12:bios12080554. [PMID: 35892451 PMCID: PMC9332597 DOI: 10.3390/bios12080554] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/14/2022] [Accepted: 07/20/2022] [Indexed: 06/01/2023]
Abstract
The conventional signal amplification strategies for surface plasmon resonance (SPR) biosensors involve the immobilization of receptors, the capture of target analytes and their recognition by signal reporters. Such strategies work at the expense of simplicity, rapidity and real-time measurement of SPR biosensors. Herein, we proposed a one-step, real-time method for the design of SPR biosensors by integrating magnetic preconcentration and separation. The target analytes were captured by the receptor-modified magnetic nanoparticles (MNPs), and then the biotinylated recognition elements were attached to the analyte-bound MNPs to form a sandwich structure. The sandwich hybrids were directly delivered to the neutravidin-modified SPR fluidic channel. The MNPs hybrids were captured by the chip through the neutravidin-biotin interaction, resulting in an enhanced SPR signal. Two SPR biosensors have been constructed for the detection of target DNA and beta-amyloid peptides with high sensitivity and selectivity. This work, integrating the advantages of one-step, real-time detection, multiple signal amplification and magnetic preconcentration, should be valuable for the detection of small molecules and ultra-low concentrations of analytes.
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Affiliation(s)
- Ting Sun
- Key Laboratory of Functional Organic Molecule, School of Chemistry and Materials Science, Guizhou Integrated Research Center of Polymer Electromagnetic Materials, Guizhou Education University, Guiyang 550018, China;
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China;
| | - Mengyao Li
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China;
| | - Feng Zhao
- Key Laboratory of Functional Organic Molecule, School of Chemistry and Materials Science, Guizhou Integrated Research Center of Polymer Electromagnetic Materials, Guizhou Education University, Guiyang 550018, China;
| | - Lin Liu
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China;
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Chang Y, Xia N, Huang Y, Sun Z, Liu L. In Situ Assembly of Nanomaterials and Molecules for the Signal Enhancement of Electrochemical Biosensors. NANOMATERIALS 2021; 11:nano11123307. [PMID: 34947656 PMCID: PMC8705329 DOI: 10.3390/nano11123307] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 11/30/2021] [Accepted: 12/04/2021] [Indexed: 02/07/2023]
Abstract
The physiochemical properties of nanomaterials have a close relationship with their status in solution. As a result of its better simplicity than that of pre-assembled aggregates, the in situ assembly of nanomaterials has been integrated into the design of electrochemical biosensors for the signal output and amplification. In this review, we highlight the significant progress in the in situ assembly of nanomaterials as the nanolabels for enhancing the performances of electrochemical biosensors. The works are discussed based on the difference in the interactions for the assembly of nanomaterials, including DNA hybridization, metal ion-ligand coordination, metal-thiol and boronate ester interactions, aptamer-target binding, electrostatic attraction, and streptavidin (SA)-biotin conjugate. We further expand the range of the assembly units from nanomaterials to small organic molecules and biomolecules, which endow the signal-amplified strategies with more potential applications.
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Affiliation(s)
| | | | | | | | - Lin Liu
- Correspondence: (Z.S.); (L.L.)
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Gold and Silver Nanoparticle-Based Colorimetric Sensors: New Trends and Applications. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9110305] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Gold and Silver nanoparticles (AuNPs and AgNPs) are perfect platforms for developing sensing colorimetric devices thanks to their high surface to volume ratio and distinctive optical properties, particularly sensitive to changes in the surrounding environment. These characteristics ensure high sensitivity in colorimetric devices. Au and Ag nanoparticles can be capped with suitable molecules that can act as specific analyte receptors, so highly selective sensors can be obtained. This review aims to highlight the principal strategies developed during the last decade concerning the preparation of Au and Ag nanoparticle-based colorimetric sensors, with particular attention to environmental and health monitoring applications.
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Surface Plasmon Resonance for Protease Detection by Integration of Homogeneous Reaction. BIOSENSORS-BASEL 2021; 11:bios11100362. [PMID: 34677318 PMCID: PMC8534046 DOI: 10.3390/bios11100362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 09/25/2021] [Accepted: 09/27/2021] [Indexed: 12/25/2022]
Abstract
The heterogeneous assays of proteases usually require the immobilization of peptide substrates on the solid surface for enzymatic hydrolysis reactions. However, immobilization of peptides on the solid surface may cause a steric hindrance to prevent the interaction between the substrate and the active center of protease, thus limiting the enzymatic cleavage of the peptide. In this work, we reported a heterogeneous surface plasmon resonance (SPR) method for protease detection by integration of homogeneous reaction. The sensitivity was enhanced by the signal amplification of streptavidin (SA)-conjugated immunoglobulin G (SA-IgG). Caspase-3 (Cas-3) was determined as the model. A peptide labeled with two biotin tags at the N- and C-terminals (bio-GDEVDGK-bio) was used as the substrate. In the absence of Cas-3, the substrate peptide was captured by neutravidin (NA)-covered SPR chip to facilitate the attachment of SA-IgG by the avidin-biotin interaction. However, once the peptide substrate was digested by Cas-3 in the aqueous phase, the products of bio-GDEVD and GK-bio would compete with the substrate to bond NA on the chip surface, thus limiting the attachment of SA-IgG. The method integrated the advantages of both heterogeneous and homogeneous assays and has been used to determine Cas-3 inhibitor and evaluate cell apoptosis with satisfactory results.
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