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Hormsombut T, Mekjinda N, Kalasin S, Surareungchai W, Rijiravanich P. Mesoporous Silica Nanoparticles-Enhanced Microarray Technology for Highly Sensitive Simultaneous Detection of Multiplex Foodborne Pathogens. ACS APPLIED BIO MATERIALS 2024; 7:2367-2377. [PMID: 38497627 PMCID: PMC11234362 DOI: 10.1021/acsabm.4c00005] [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: 01/10/2024] [Revised: 02/28/2024] [Accepted: 02/29/2024] [Indexed: 03/19/2024]
Abstract
Ensuring food safety is paramount for the food industry and global health concerns. In this study, we have developed a method for the detection of prevalent foodborne pathogenic bacteria, including Escherichia coli, Salmonella spp., Listeria spp., Shigella spp., Campylobacter spp., Clostridium spp., and Vibrio spp., utilizing antibody-aptamer arrays. To enhance the fluorescence signals on the microarray, the mesoporous silica nanoparticles (MSNs) conjugated with fluorescein, streptavidin, and seven detection antibodies-biotin were employed, forming fluorescein doped mesoporous silica nanoparticles conjugated with detection antibodies (MSNs-Flu-SA-Abs) complexes. The array pattern was designed for easy readability and enabled the simultaneous detection of all seven foodborne pathogens, referred to as the 7FP-biochip. Following the optimization of MSNs-Flu-SA-Abs complexes attachment and enhancement of the detection signal in fluorescent immunoassays, a high level of sensitivity was achieved. The detection limits for the seven pathogens in both buffer and food samples were 102 CFU/mL through visual screening, with fluorescent intensity quantification achieving levels as low as 20-34 CFU/g were achieved on the antibody-aptamer arrays. Our antibody-aptamer array offers several advantages, including significantly reduced nonspecific binding with no cross-reaction between bacteria. Importantly, our platform detection exhibited no cross-reactivity among the tested bacteria in this study. The multiplex detection of foodborne pathogens in canned tuna samples with spiked bacteria was successfully demonstrated in real food measurements. In conclusion, our study presents a promising method for detecting multiple foodborne pathogens simultaneously. With its high sensitivity and specificity, the developed antibody-aptamer array holds great potential for enhancing food safety and public health.
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Affiliation(s)
- Timpika Hormsombut
- Faculty
of Science and Nanoscience & Nanotechnology Graduate Program, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand
- Sensor
Technology Laboratory, Pilot Plant Development and Training Institute, King Mongkut’s University of Technology Thonburi, Bang Khun Thian, Bangkok 10150, Thailand
| | - Nutsara Mekjinda
- Sensor
Technology Laboratory, Pilot Plant Development and Training Institute, King Mongkut’s University of Technology Thonburi, Bang Khun Thian, Bangkok 10150, Thailand
- Analytical
Sciences and National Doping Test Institute, Mahidol University, Bangkok 10400, Thailand
| | - Surachate Kalasin
- Faculty
of Science and Nanoscience & Nanotechnology Graduate Program, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand
| | - Werasak Surareungchai
- Faculty
of Science and Nanoscience & Nanotechnology Graduate Program, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand
- Sensor
Technology Laboratory, Pilot Plant Development and Training Institute, King Mongkut’s University of Technology Thonburi, Bang Khun Thian, Bangkok 10150, Thailand
- Analytical
Sciences and National Doping Test Institute, Mahidol University, Bangkok 10400, Thailand
- School
of Bioresources and Technology, King Mongkut’s
University of Technology Thonburi, Bangkok 10150, Thailand
| | - Patsamon Rijiravanich
- Sensor
Technology Laboratory, Pilot Plant Development and Training Institute, King Mongkut’s University of Technology Thonburi, Bang Khun Thian, Bangkok 10150, Thailand
- BioSciences
and Systems Biology Research Team, National Center for Genetic Engineering
and Biotechnology, National Sciences and Technology Development Agency, King Mongkut’s University of Technology Thonburi, Bangkok 10150, Thailand
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2
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Malatji K, Singh A, Thobakgale C, Alexandre K. Development of a Multiplex HIV/TB Diagnostic Assay Based on the Microarray Technology. BIOSENSORS 2023; 13:894. [PMID: 37754128 PMCID: PMC10526232 DOI: 10.3390/bios13090894] [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: 07/18/2023] [Revised: 09/11/2023] [Accepted: 09/18/2023] [Indexed: 09/28/2023]
Abstract
Currently there are diagnostic tests available for human immunodeficiency virus (HIV) and tuberculosis (TB); however, they are still diagnosed separately, which can delay treatment in cases of co-infection. Here we report on a multiplex microarray technology for the detection of HIV and TB antibodies using p24 as well as TB CFP10, ESAT6 and pstS1 antigens on epoxy-silane slides. To test this technology for antigen-antibody interactions, immobilized antigens were exposed to human sera spiked with physiological concentrations of primary antibodies, followed by secondary antibodies conjugated to a fluorescent reporter. HIV and TB antibodies were captured with no cross-reactivity observed. The sensitivity of the slides was compared to that of high-binding plates. We found that the slides were more sensitive, with the detection limit being 0.000954 µg/mL compared to 4.637 µg/mL for the plates. Furthermore, stability studies revealed that the immobilized antigens could be stored dry for at least 90 days and remained stable across all pH and temperatures assessed, with pH 7.4 and 25 °C being optimal. The data collectively suggested that the HIV/TB multiplex detection technology we developed has the potential for use to diagnose HIV and TB co-infection, and thus can be developed further for the purpose.
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Affiliation(s)
- Kanyane Malatji
- Array Technology Laboratory, Synthetic Biology and Precision Medicine Centre: Next Generation Health Cluster, Council for Scientific and Industrial Research, Brummeria, Pretoria 0001, South Africa (K.A.)
- Department of Virology, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Braamfontein, Johannesburg 2000, South Africa;
| | - Advaita Singh
- Future Production: Chemicals Cluster, Council for Scientific and Industrial Research, Brummeria, Pretoria 0001, South Africa
| | - Christina Thobakgale
- Department of Virology, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Braamfontein, Johannesburg 2000, South Africa;
- Centre for HIV and STIs, National Institute for Communicable Diseases, Sandringham, Johannesburg 2192, South Africa
| | - Kabamba Alexandre
- Array Technology Laboratory, Synthetic Biology and Precision Medicine Centre: Next Generation Health Cluster, Council for Scientific and Industrial Research, Brummeria, Pretoria 0001, South Africa (K.A.)
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Kosoy G, Miller BL. Two Decades of Arrayed Imaging Reflectometry for Sensitive, High-Throughput Biosensing. BIOSENSORS 2023; 13:870. [PMID: 37754104 PMCID: PMC10526495 DOI: 10.3390/bios13090870] [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: 07/13/2023] [Revised: 08/17/2023] [Accepted: 08/25/2023] [Indexed: 09/28/2023]
Abstract
Arrayed imaging reflectometry (AIR), first introduced in 2004, is a thin-film interference sensor technique that optimizes optical properties (angle of incidence, polarization, substrate refractive index, and thickness) to create a condition of total destructive interference at the surface of a silicon substrate. The advantages of AIR are its sensitivity, dynamic range, multiplex capability, and high-throughput compatibility. AIR has been used for the detection of antibodies against coronaviruses, influenza viruses, Staphylococcus aureus, and human autoantigens. It has also shown utility in detection of cytokines, with sensitivity comparable to bead-based and ELISA assays. Not limited to antibodies or antigens, mixed aptamer and protein arrays as well as glycan arrays have been employed in AIR for differentiating influenza strains. Mixed arrays using direct and competitive inhibition assays have enabled simultaneous measurement of cytokines and small molecules. Finally, AIR has also been used to measure affinity constants, kinetic and at equilibrium. In this review, we give an overview of AIR biosensing technologies and present the latest AIR advances.
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Affiliation(s)
- Gabrielle Kosoy
- Department of Biochemistry and Biophysics, University of Rochester, Rochester, NY 14526, USA;
| | - Benjamin L. Miller
- Department of Biochemistry and Biophysics, University of Rochester, Rochester, NY 14526, USA;
- Department of Dermatology, University of Rochester, Rochester, NY 14526, USA
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4
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Zheng Y, Song X, Fredj Z, Bian S, Sawan M. Challenges and perspectives of multi-virus biosensing techniques: A review. Anal Chim Acta 2023; 1244:340860. [PMID: 36737150 PMCID: PMC9868144 DOI: 10.1016/j.aca.2023.340860] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 01/17/2023] [Accepted: 01/18/2023] [Indexed: 01/24/2023]
Abstract
In the context of globalization, individuals have an increased chance of being infected by multiple viruses simultaneously, thereby highlighting the importance of developing multiplexed devices. In addition to sufficient sensitivity and rapid response, multi-virus sensing techniques are expected to offer additional advantages including high throughput, one-time sampling for parallel analysis, and full automation with data visualization. In this paper, we review the optical, electrochemical, and mechanical platforms that enable multi-virus biosensing. The working mechanisms of each platform, including the detection principle, transducer configuration, bio-interface design, and detected signals, are reviewed. The advantages and limitations, as well as the challenges in implementing various detection strategies in real-life scenarios, were evaluated. Future perspectives on multiplexed biosensing techniques are critically discussed. Earlier access to multi-virus biosensors will efficiently serve for immediate pandemic control, such as in emerging SARS-CoV-2 and monkeypox cases.
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Affiliation(s)
- Yuqiao Zheng
- Zhejiang University, Hangzhou, 310058, Zhejiang, China,Research Center for Industries of the Future, Westlake University, Hangzhou, Zhejiang, 310030, China
| | - Xixi Song
- Research Center for Industries of the Future, Westlake University, Hangzhou, Zhejiang, 310030, China
| | - Zina Fredj
- Research Center for Industries of the Future, Westlake University, Hangzhou, Zhejiang, 310030, China
| | - Sumin Bian
- Research Center for Industries of the Future, Westlake University, Hangzhou, Zhejiang, 310030, China.
| | - Mohamad Sawan
- Research Center for Industries of the Future, Westlake University, Hangzhou, Zhejiang, 310030, China.
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Patel SK, Surve J, Parmar J, Ahmed K, Bui FM, Al-Zahrani FA. Recent Advances in Biosensors for Detection of COVID-19 and Other Viruses. IEEE Rev Biomed Eng 2023; 16:22-37. [PMID: 36197867 PMCID: PMC10009816 DOI: 10.1109/rbme.2022.3212038] [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: 03/21/2022] [Revised: 06/28/2022] [Accepted: 09/23/2022] [Indexed: 11/06/2022]
Abstract
This century has introduced very deadly, dangerous, and infectious diseases to humankind such as the influenza virus, Ebola virus, Zika virus, and the most infectious SARS-CoV-2 commonly known as COVID-19 and have caused epidemics and pandemics across the globe. For some of these diseases, proper medications, and vaccinations are missing and the early detection of these viruses will be critical to saving the patients. And even the vaccines are available for COVID-19, the new variants of COVID-19 such as Delta, and Omicron are spreading at large. The available virus detection techniques take a long time, are costly, and complex and some of them generates false negative or false positive that might cost patients their lives. The biosensor technique is one of the best qualified to address this difficult challenge. In this systematic review, we have summarized recent advancements in biosensor-based detection of these pandemic viruses including COVID-19. Biosensors are emerging as efficient and economical analytical diagnostic instruments for early-stage illness detection. They are highly suitable for applications related to healthcare, wearable electronics, safety, environment, military, and agriculture. We strongly believe that these insights will aid in the study and development of a new generation of adaptable virus biosensors for fellow researchers.
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Affiliation(s)
- Shobhit K. Patel
- Department of Computer EngineeringMarwadi UniversityRajkot360003India
| | - Jaymit Surve
- Department of Electrical EngineeringMarwadi UniversityRajkot360003India
| | - Juveriya Parmar
- Department of Mechanical and Materials EngineeringUniversity of Nebraska - LincolnNebraska68588USA
- Department of Electronics and Communication EngineeringMarwadi UniversityRajkot360003India
| | - Kawsar Ahmed
- Department of Electrical and Computer EngineeringUniversity of SaskatchewanSaskatoonSKS79 5A9Canada
- Group of Bio-PhotomatiX, Department of Information and Communication TechnologyMawlana Bhashani Science and Technology UniversitySantoshTangail1902Bangladesh
| | - Francis M. Bui
- Department of Electrical and Computer EngineeringUniversity of SaskatchewanSaskatoonSKS79 5A9Canada
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Abstract
Through their specific interactions with proteins, cellular glycans play key roles in a wide range of physiological and pathological processes. One of the main goals of research in the areas of glycobiology and glycomedicine is to understand glycan-protein interactions at the molecular level. Over the past two decades, glycan microarrays have become powerful tools for the rapid evaluation of interactions between glycans and proteins. In this review, we briefly describe methods used for the preparation of glycan probes and the construction of glycan microarrays. Next, we highlight applications of glycan microarrays to rapid profiling of glycan-binding patterns of plant, animal and pathogenic lectins, as well as other proteins. Finally, we discuss other important uses of glycan microarrays, including the rapid analysis of substrate specificities of carbohydrate-active enzymes, the quantitative determination of glycan-protein interactions, discovering high-affinity or selective ligands for lectins, and identifying functional glycans within cells. We anticipate that this review will encourage researchers to employ glycan microarrays in diverse glycan-related studies.
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Affiliation(s)
- Yujun Kim
- Department of Chemistry, Yonsei University, 03722 Seoul, Republic of Korea.
| | - Ji Young Hyun
- Department of Drug Discovery, Data Convergence Drug Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea.
| | - Injae Shin
- Department of Chemistry, Yonsei University, 03722 Seoul, Republic of Korea.
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Babaei A, Pouremamali A, Rafiee N, Sohrabi H, Mokhtarzadeh A, de la Guardia M. Genosensors as an alternative diagnostic sensing approaches for specific detection of various certain viruses: a review of common techniques and outcomes. Trends Analyt Chem 2022; 155:116686. [PMID: 35611316 PMCID: PMC9119280 DOI: 10.1016/j.trac.2022.116686] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 05/08/2022] [Accepted: 05/15/2022] [Indexed: 12/19/2022]
Abstract
Viral infections are responsible for the deaths of millions of people throughout the world. Since outbreak of highly contagious and mutant viruses such as contemporary sars-cov-2 pandemic, has challenged the conventional diagnostic methods, the entity of a thoroughly sensitive, specific, rapid and inexpensive detecting technique with minimum level of false-positivity or -negativity, is desperately needed more than any time in the past decades. Biosensors as minimized devices could detect viruses in simple formats. So far, various nucleic acid, immune- and protein-based biosensors were designed and tested for recognizing the genome, antigen, or protein level of viruses, respectively; however, nucleic acid-based sensing techniques, which is the foundation of constructing genosensors, are preferred not only because of their ultra-sensitivity and applicability in the early stages of infections but also for their ability to differentiate various strains of the same virus. To date, the review articles related to genosensors are just confined to particular pathogenic diseases; In this regard, the present review covers comprehensive information of the research progress of the electrochemical, optical, and surface plasmon resonance (SPR) genosensors that applied for human viruses' diseases detection and also provides a well description of viruses' clinical importance, the conventional diagnosis approaches of viruses and their disadvantages. This review would address the limitations in the current developments as well as the future challenges involved in the successful construction of sensing approaches with the functionalized nanomaterials and also allow exploring into core-research works regarding this area.
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Affiliation(s)
- Abouzar Babaei
- Department of Virology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Amir Pouremamali
- Department of Virology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Nastaran Rafiee
- Department of Virology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Hessamaddin Sohrabi
- Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Ahad Mokhtarzadeh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Miguel de la Guardia
- Department of Analytical Chemistry, University of Valencia, Dr. Moliner 50, 46100, Burjassot, Valencia, Spain
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Salahandish R, Haghayegh F, Ayala-Charca G, Hyun JE, Khalghollah M, Zare A, Far B, Berenger BM, Niu YD, Ghafar-Zadeh E, Sanati-Nezhad A. Bi-ECDAQ: An electrochemical dual-immuno-biosensor accompanied by a customized bi-potentiostat for clinical detection of SARS-CoV-2 Nucleocapsid proteins. Biosens Bioelectron 2022; 203:114018. [PMID: 35114466 PMCID: PMC8786409 DOI: 10.1016/j.bios.2022.114018] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 01/08/2022] [Accepted: 01/15/2022] [Indexed: 01/10/2023]
Abstract
Multiplex electrochemical biosensors have been used for eliminating the matrix effect in complex bodily fluids or enabling the detection of two or more bioanalytes, overall resulting in more sensitive assays and accurate diagnostics. Many electrochemical biosensors lack reliable and low-cost multiplexing to meet the requirements of point-of-care detection due to either limited functional biosensors for multi-electrode detection or incompatible readout systems. We developed a new dual electrochemical biosensing unit accompanied by a customized potentiostat to address the unmet need for point-of-care multi-electrode electrochemical biosensing. The two-working electrode system was developed using screen-printing of a carboxyl-rich nanomaterial containing ink, with both working electrodes offering active sites for recognition of bioanalytes. The low-cost bi-potentiostat system (∼$80) was developed and customized specifically to the bi-electrode design and used for rapid, repeatable, and accurate measurement of electrochemical impedance spectroscopy signals from the dual biosensor. This binary electrochemical data acquisition (Bi-ECDAQ) system accurately and selectively detected SARS-CoV-2 Nucleocapsid protein (N-protein) in both spiked samples and clinical nasopharyngeal swab samples of COVID-19 patients within 30 min. The two working electrodes offered the limit of detection of 116 fg/mL and 150 fg/mL, respectively, with the dynamic detection range of 1-10,000 pg/mL and the sensitivity range of 2744-2936 Ω mL/pg.mm2 for the detection of N-protein. The potentiostat performed comparable or better than commercial Autolab potentiostats while it is significantly lower cost. The open-source Bi-ECDAQ presents a customizable and flexible approach towards addressing the need for rapid and accurate point-of-care electrochemical biosensors for the rapid detection of various diseases.
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Affiliation(s)
- Razieh Salahandish
- BioMEMS and Bioinspired Microfluidic Laboratory, Department of Mechanical and Manufacturing Engineering, University of Calgary, Calgary, Alberta, T2N 1N4, Canada,Department of Biomedical Engineering, University of Calgary, Calgary, Alberta, T2N 1N4, Canada
| | - Fatemeh Haghayegh
- BioMEMS and Bioinspired Microfluidic Laboratory, Department of Mechanical and Manufacturing Engineering, University of Calgary, Calgary, Alberta, T2N 1N4, Canada,Department of Biomedical Engineering, University of Calgary, Calgary, Alberta, T2N 1N4, Canada
| | - Giancarlo Ayala-Charca
- Biologically Inspired Sensors and Actuators (BioSA), Department of Electrical Engineering and Computer Science, Lassonde School of Engineering, York University, Toronto, M3J1P3, Canada
| | - Jae Eun Hyun
- Alberta Public Health Laboratory, Alberta Precision Laboratories, 3330 Hospital Drive, Calgary, Alberta, T2N 4W4, Canada
| | - Mahmood Khalghollah
- BioMEMS and Bioinspired Microfluidic Laboratory, Department of Mechanical and Manufacturing Engineering, University of Calgary, Calgary, Alberta, T2N 1N4, Canada,Department of Electrical and Software Engineering, University of Calgary, Calgary, Alberta, T2N 1N4, Canada
| | - Azam Zare
- BioMEMS and Bioinspired Microfluidic Laboratory, Department of Mechanical and Manufacturing Engineering, University of Calgary, Calgary, Alberta, T2N 1N4, Canada
| | - Behrouz Far
- Department of Electrical and Software Engineering, University of Calgary, Calgary, Alberta, T2N 1N4, Canada
| | - Byron M. Berenger
- Alberta Public Health Laboratory, Alberta Precision Laboratories, 3330 Hospital Drive, Calgary, Alberta, T2N 4W4, Canada,Department of Pathology and Laboratory Medicine, University of Calgary, 3535 Research Rd, Calgary, Alberta, T2L 1Y1, Canada
| | - Yan Dong Niu
- Department of Pathology and Laboratory Medicine, University of Calgary, 3535 Research Rd, Calgary, Alberta, T2L 1Y1, Canada; Department of Ecosystem and Public Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, T2N 1N4, Canada.
| | - Ebrahim Ghafar-Zadeh
- Biologically Inspired Sensors and Actuators (BioSA), Department of Electrical Engineering and Computer Science, Lassonde School of Engineering, York University, Toronto, M3J1P3, Canada.
| | - Amir Sanati-Nezhad
- BioMEMS and Bioinspired Microfluidic Laboratory, Department of Mechanical and Manufacturing Engineering, University of Calgary, Calgary, Alberta, T2N 1N4, Canada; Department of Biomedical Engineering, University of Calgary, Calgary, Alberta, T2N 1N4, Canada; Biomedical Engineering Graduate Program, University of Calgary, Calgary, Alberta, T2N 1N4, Canada.
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Huang J, Zhang X, Fu K, Wei G, Su Z. Stimulus-responsive nanomaterials under physical regulation for biomedical applications. J Mater Chem B 2021; 9:9642-9657. [PMID: 34807221 DOI: 10.1039/d1tb02130c] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Cancer is a growing threat to human beings. Traditional treatments for malignant tumors usually involve invasive means to healthy human tissues, such as surgical treatment and chemotherapy. In recent years the use of specific stimulus-responsive materials in combination with some non-contact, non-invasive stimuli can lead to better efficacy and has become an important area of research. It promises to develop personalized treatment systems for four types of physical stimuli: light, ultrasound, magnetic field, and temperature. Nanomaterials that are responsive to these stimuli can be used to enhance drug delivery, cancer treatment, and tissue engineering. This paper reviews the principles of the stimuli mentioned above, their effects on materials, and how they work with nanomaterials. For this aim, we focus on specific applications in controlled drug release, cancer therapy, tissue engineering, and virus detection, with particular reference to recent photothermal, photodynamic, sonodynamic, magnetothermal, radiation, and other types of therapies. It is instructive for the future development of stimulus-responsive nanomaterials for these aspects.
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Affiliation(s)
- Jinzhu Huang
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Xiaoyuan Zhang
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Kun Fu
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Gang Wei
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
| | - Zhiqiang Su
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China.
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10
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Simone G. Surface plasmon resonance study for a reliable determination of the affinity constant of multivalent grafted beads. SOFT MATTER 2021; 17:7047-7057. [PMID: 34251388 DOI: 10.1039/d1sm00591j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In this study, galactose-grafted beads were prepared using the main design principle of the cluster effect. Galactose was chosen as the sugar for investigation because it acts as the main building block of long glycan chains and because a simple and fast protocol is still required for its immobilization. For the analysis, the lectin, ligand of the galactose, was immobilized on a gold plasmonic substrate. After preliminary characterization of the galactose-grafted beads, the investigation of the surface plasmon surface behavior of the system was carried out, for studying the affinity constant of the multivalent beads. The results of steady-state and of the kinetics analysis evidenced a higher affinity of the galactose-grafted beads over the beadless galactose solution. For the association kinetics analysis, a Langmuir isotherm was applied to the data. The analysis of the rate of dissociation evidenced the most important differences between the two samples, based on the more difficult release of the galactose-grafted beads during washing. To confirm the influence of the glycoside cluster effect, a low-density lectin substrate was tested, and the results evidenced that the characteristic size of the molecules determines a threshold for the cluster density. The calculated detection limit and dissociation constants were 3.5 μM and 40.2 μM, respectively. Considering those results, the evaluation of the affinities toward the receptors depends on the cluster density and then, it should be designed for mimicking the biological samples.
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Affiliation(s)
- Giuseppina Simone
- The Ministry of Education Key Laboratory of Micro/Nano Systems for Aerospace, School of Mechanical Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, Shaanxi 710072, People's Republic of China.
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