1
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Pancaro A, Szymonik M, Perez Schmidt P, Erol G, Garcia Barrientos A, Polito L, Gobbi M, Duwé S, Hendrix J, Nelissen I. A Nanoplasmonic Assay for Point-of-Care Detection of Mannose-Binding Lectin in Human Serum. ACS APPLIED MATERIALS & INTERFACES 2024; 16:30556-30566. [PMID: 38806166 PMCID: PMC11181273 DOI: 10.1021/acsami.4c04018] [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: 03/11/2024] [Revised: 05/02/2024] [Accepted: 05/08/2024] [Indexed: 05/30/2024]
Abstract
Mannose-binding lectin (MBL) activates the complement system lectin pathway and subsequent inflammatory mechanisms. The incidence and outcome of many human diseases, such as brain ischemia and infections, are associated with and influenced by the activity and serum concentrations of MBL in body fluids. To quantify MBL levels, tests based on ELISA are used, requiring several incubation and washing steps and lengthy turnaround times. Here, we aimed to develop a nanoplasmonic assay for direct MBL detection in human serum at the point of care. Our assay is based on gold nanorods (GNRs) functionalized with mannose (Man-GNRs) via an amphiphilic linker. We experimentally determined the effective amount of sugar linked to the nanorods' surface, resulting in an approximate grafting density of 4 molecules per nm2, and an average number of 11 to 13 MBL molecules binding to a single nanoparticle. The optimal Man-GNRs concentration to achieve the highest sensitivity in MBL detection was 15 μg·mL-1. The specificity of the assay for MBL detection both in simple buffer and in complex pooled human sera was confirmed. Our label-free biosensor is able to detect MBL concentrations as low as 160 ng·mL-1 within 15 min directly in human serum via a one-step reaction and by using a microplate reader. Hence, it forms the basis for a fast, noninvasive, point-of-care assay for diagnostic indications and monitoring of disease and therapy.
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Affiliation(s)
- Alessia Pancaro
- Health
Unit, Flemish Institute for Technological
Research (VITO), Boeretang 200, Mol 2400, Belgium
- Dynamic
Bioimaging Lab, Biomedical Research Institute, Hasselt University, Agoralaan C, Diepenbeek 3590, Belgium
| | - Michal Szymonik
- Health
Unit, Flemish Institute for Technological
Research (VITO), Boeretang 200, Mol 2400, Belgium
| | - Patricia Perez Schmidt
- Istituto
di Scienze e Tecnologie Chimiche “Giulio Natta”, SCITEC−CNR,
G, Fantoli 16/15, Milan 20138, Italy
| | - Gizem Erol
- Istituto
di Ricerche Farmacologiche Mario Negri IRCCS, Mario Negri 2 20156, Milan, Italy
| | | | - Laura Polito
- Istituto
di Scienze e Tecnologie Chimiche “Giulio Natta”, SCITEC−CNR,
G, Fantoli 16/15, Milan 20138, Italy
| | - Marco Gobbi
- Istituto
di Ricerche Farmacologiche Mario Negri IRCCS, Mario Negri 2 20156, Milan, Italy
| | - Sam Duwé
- Advanced
Optical Microscopy Centre, Biomedical Research Institute, Hasselt University, Agoralaan C, Diepenbeek 3590, Belgium
| | - Jelle Hendrix
- Dynamic
Bioimaging Lab, Biomedical Research Institute, Hasselt University, Agoralaan C, Diepenbeek 3590, Belgium
- Advanced
Optical Microscopy Centre, Biomedical Research Institute, Hasselt University, Agoralaan C, Diepenbeek 3590, Belgium
| | - Inge Nelissen
- Health
Unit, Flemish Institute for Technological
Research (VITO), Boeretang 200, Mol 2400, Belgium
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2
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Pritchard C, Ligorio M, Jackson GD, Gibson MI, Ward MD. Programmable Monodisperse Glyco-Multivalency Using Self-Assembled Coordination Cages as Scaffolds. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37486195 PMCID: PMC10401570 DOI: 10.1021/acsami.3c08666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
The multivalent presentation of glycans leads to enhanced binding avidity to lectins due to the cluster glycoside effect. Most materials used as scaffolds for multivalent glycan arrays, such as polymers or nanoparticles, have intrinsic dispersity: meaning that in any sample, a range of valencies are presented and it is not possible to determine which fraction(s) are responsible for binding. The intrinsic dispersity of many multivalent glycan scaffolds also limits their reproducibility and predictability. Here we make use of the structurally programmable nature of self-assembled metal coordination cages, with polyhedral metal-ion cores supporting ligand arrays of predictable sizes, to assemble a 16-membered library of perfectly monodisperse glycoclusters displaying valencies from 2 to 24 through a careful choice of ligand/metal combinations. Mono- and trisaccharides are introduced into these clusters, showing that the synthetic route is tolerant of biologically relevant glycans, including sialic acids. The cluster series demonstrates increased binding to a range of lectins as the number of glycans increases. This strategy offers an alternative to current glycomaterials for control of the valency of three-dimensional (3-D) glycan arrays, and may find application across sensing, imaging, and basic biology.
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Affiliation(s)
- Callum Pritchard
- Department of Chemistry, University of Warwick, Coventry CV47AL, U.K
| | - Melissa Ligorio
- Department of Chemistry, University of Warwick, Coventry CV47AL, U.K
| | - Garrett D Jackson
- Department of Chemistry, University of Warwick, Coventry CV47AL, U.K
| | - Matthew I Gibson
- Department of Chemistry, University of Warwick, Coventry CV47AL, U.K
- Division of Biomedical Sciences, Warwick Medical School, University of Warwick, Coventry CV47AL, U.K
| | - Michael D Ward
- Department of Chemistry, University of Warwick, Coventry CV47AL, U.K
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3
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Lostao A, Lim K, Pallarés MC, Ptak A, Marcuello C. Recent advances in sensing the inter-biomolecular interactions at the nanoscale - A comprehensive review of AFM-based force spectroscopy. Int J Biol Macromol 2023; 238:124089. [PMID: 36948336 DOI: 10.1016/j.ijbiomac.2023.124089] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 03/13/2023] [Accepted: 03/15/2023] [Indexed: 03/24/2023]
Abstract
Biomolecular interactions underpin most processes inside the cell. Hence, a precise and quantitative understanding of molecular association and dissociation events is crucial, not only from a fundamental perspective, but also for the rational design of biomolecular platforms for state-of-the-art biomedical and industrial applications. In this context, atomic force microscopy (AFM) appears as an invaluable experimental technique, allowing the measurement of the mechanical strength of biomolecular complexes to provide a quantitative characterization of their interaction properties from a single molecule perspective. In the present review, the most recent methodological advances in this field are presented with special focus on bioconjugation, immobilization and AFM tip functionalization, dynamic force spectroscopy measurements, molecular recognition imaging and theoretical modeling. We expect this work to significantly aid in grasping the principles of AFM-based force spectroscopy (AFM-FS) technique and provide the necessary tools to acquaint the type of data that can be achieved from this type of experiments. Furthermore, a critical assessment is done with other nanotechnology techniques to better visualize the future prospects of AFM-FS.
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Affiliation(s)
- Anabel Lostao
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain; Laboratorio de Microscopias Avanzadas (LMA), Universidad de Zaragoza, Zaragoza 50018, Spain; Fundación ARAID, Aragón, Spain.
| | - KeeSiang Lim
- WPI-Nano Life Science Institute, Kanazawa University, Ishikawa 920-1192, Japan
| | - María Carmen Pallarés
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain; Laboratorio de Microscopias Avanzadas (LMA), Universidad de Zaragoza, Zaragoza 50018, Spain
| | - Arkadiusz Ptak
- Institute of Physics, Faculty of Materials Engineering and Technical Physics, Poznan University of Technology, Poznan 60-925, Poland
| | - Carlos Marcuello
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain; Laboratorio de Microscopias Avanzadas (LMA), Universidad de Zaragoza, Zaragoza 50018, Spain.
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4
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Micallef J, Baker AN, Richards SJ, Soutar DE, Georgiou PG, Walker M, Gibson MI. Polymer-tethered glyconanoparticle colourimetric biosensors for lectin binding: structural and experimental parameters to ensure a robust output. RSC Adv 2022; 12:33080-33090. [PMID: 36425181 PMCID: PMC9672907 DOI: 10.1039/d2ra06265h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 11/07/2022] [Indexed: 11/19/2022] Open
Abstract
Glycan-lectin interactions play essential roles in biology; as the site of attachment for pathogens, cell-cell communication, and as crucial players in the immune system. Identifying if a new glycan (natural or unnatural) binds a protein partner, or if a new protein (or mutant) binds a glycan remains a non-trivial problem, with few accessible or low-cost tools available. Micro-arrays allow for the interrogation of 100's of glycans but are not widely available in individual laboratories. Biophysical techniques such as isothermal titration calorimetry, surface plasmon resonance spectrometry, biolayer interferometry and nuclear magnetic resonance spectroscopy all provide detailed understanding of glycan binding but are relatively expensive. Glycosylated plasmonic nanoparticles based on gold cores with polymeric tethers have emerged as biosensors to detect glycan-protein binding, based on colourimetric (red to blue) outputs which can be easily interpreted by a simple UV-visible spectrometer or by eye. Despite the large number of reports there are no standard protocols for each system or recommended start points, to allow a new user to deploy this technology. Here we explore the key parameters of nanoparticle size, polymeric tether length and gold concentration to provide some guidelines for how polymer-tethered glycosylated gold nanoparticles can be used to probe a new glycan/protein interactions, with minimal optimisation barriers. This work aimed to remove the need to explore chemical and nanoparticle space and hence remove a barrier for other users when deploying this system. We show that the concentration of the gold core is crucial to balance strong responses versus false positives and recommend a gold core size and polymer tether length which balances sufficient colloidal stability and output. Whilst subtle differences between glycans/lectins will impact the outcomes, these parameters should enable a lab user to quickly evaluate binding using minimal quantities of the glycan and lectin, to select candidates for further study.
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Affiliation(s)
| | | | | | | | | | - Marc Walker
- Department of Physics, University of Warwick CV4 7AL UK
| | - Matthew I Gibson
- Department of Chemistry, University of Warwick CV4 7AL UK
- Division of Biomedical Sciences, Warwick Medical School, University of Warwick Gibbet Hill Road CV4 7AL Coventry UK
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5
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Wang R, Schirmer L, Wieduwilt T, Förster R, Schmidt MA, Freudenberg U, Werner C, Fery A, Rossner C. Colorimetric Biosensors Based on Polymer/Gold Hybrid Nanoparticles: Topological Effects of the Polymer Coating. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:12325-12332. [PMID: 36154138 DOI: 10.1021/acs.langmuir.2c02013] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Gold nanoparticles decorated with analyte recognition units can form the basis of colorimetric (bio)sensors. The presentation of those recognition units may play a critical role in determining sensor sensitivity. Herein, we use a model system to investigate the effect of the architecture of a polymeric linker that connects gold nanoparticles with the recognition units. Our results show that the number of the latter that can be adsorbed during the assembly of the colorimetric sensors depends on the linker topology. We also show that this may lead to substantial differences in colorimetric sensor performance, particularly in situations in which the interactions with the analyte are comparably weak. Finally, we discuss design principles for efficient colorimetric sensor materials based on our findings.
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Affiliation(s)
- Ruosong Wang
- Institut für Physikalische Chemie und Physik der Polymere, Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, D-01069 Dresden, Germany
| | - Lucas Schirmer
- Max Bergmann Center of Biomaterials Dresden (MBC), Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, D-01069 Dresden, Germany
| | - Torsten Wieduwilt
- Leibniz-Institut für Photonische Technologien, Albert-Einstein-Straße 9, D-07745 Jena, Germany
| | - Ronny Förster
- Leibniz-Institut für Photonische Technologien, Albert-Einstein-Straße 9, D-07745 Jena, Germany
| | - Markus A Schmidt
- Leibniz-Institut für Photonische Technologien, Albert-Einstein-Straße 9, D-07745 Jena, Germany
- Abbe Center of Photonics and Faculty of Physics, FSU Jena, 07745 Jena, Germany
- Otto Schott Institute of Material Research, FSU Jena, 07745 Jena, Germany
| | - Uwe Freudenberg
- Max Bergmann Center of Biomaterials Dresden (MBC), Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, D-01069 Dresden, Germany
| | - Carsten Werner
- Max Bergmann Center of Biomaterials Dresden (MBC), Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, D-01069 Dresden, Germany
- Center for Regenerative Therapies Dresden, Technische Universität Dresden, Fetscherstr. 105, D-01307 Dresden, Germany
| | - Andreas Fery
- Institut für Physikalische Chemie und Physik der Polymere, Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, D-01069 Dresden, Germany
| | - Christian Rossner
- Institut für Physikalische Chemie und Physik der Polymere, Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, D-01069 Dresden, Germany
- Dresden Center for Intelligent Materials (DCIM), Technische Universität Dresden, D-01069 Dresden, Germany
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6
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Ahmad A, Georgiou PG, Pancaro A, Hasan M, Nelissen I, Gibson MI. Polymer-tethered glycosylated gold nanoparticles recruit sialylated glycoproteins into their protein corona, leading to off-target lectin binding. NANOSCALE 2022; 14:13261-13273. [PMID: 36053227 PMCID: PMC9494357 DOI: 10.1039/d2nr01818g] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 08/23/2022] [Indexed: 06/15/2023]
Abstract
Upon exposure to biological fluids, the fouling of nanomaterial surfaces results in non-specific capture of proteins, which is particularly important when in contact with blood for in vivo and ex vivo applications. It is crucial to evaluate not just the protein components but also the glycans attached to those proteins. Polymer-tethered glycosylated gold nanoparticles have shown promise for use in biosensing/diagnostics, but the impact of the glycoprotein corona has not been established. Here we investigate how polymer-tethered glycosylated gold nanoparticles interact with serum proteins and demonstrate that the protein corona introduces new glycans and hence off-specific targeting capability. Using a panel of RAFT-derived polymers grafted to the gold surface, we show that the extent of corona formation is not dependent on the type of polymer. In lectin-binding assays, a glycan (galactose) installed on the chain-end of the polymer was available for binding even after protein corona formation. However, using sialic-acid binding lectins, it was found that there was significant off-target binding due to the large density of sialic acids introduced in the corona, confirmed by western blotting. To demonstrate the importance, we show that the nanoparticles can bind Siglec-2, an immune-relevant lectin post-corona formation. Pre-coating with (non-glycosylated) bovine serum albumin led to a significant reduction in the total glycoprotein corona. However, sufficient sialic acids were still present in the residual corona to lead to off-target binding. These results demonstrate the importance of the glycans when considering the protein corona and how 'retention of the desired function' does not rule out 'installation of undesired function' when considering the performance of glyco-nanomaterials.
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Affiliation(s)
- Ashfaq Ahmad
- Department of Chemistry, University of Warwick, Gibbet Hill Road, CV4 7AL, Coventry, UK.
- Division of Biomedical Sciences, Warwick Medical School, University of Warwick, Gibbet Hill Road, CV4 7AL, Coventry, UK
| | - Panagiotis G Georgiou
- Department of Chemistry, University of Warwick, Gibbet Hill Road, CV4 7AL, Coventry, UK.
| | - Alessia Pancaro
- Health Unit, Flemish Institute for Technological Research (VITO), Boeretang 200, Mol, BE-2400, Belgium
- Dynamic Bioimaging Lab, Advanced Optical Microscopy Centre and Biomedical Research Institute, Hasselt University, Agoralaan C, Diepenbeek, BE-3590, Belgium
| | - Muhammad Hasan
- Department of Chemistry, University of Warwick, Gibbet Hill Road, CV4 7AL, Coventry, UK.
| | - Inge Nelissen
- Health Unit, Flemish Institute for Technological Research (VITO), Boeretang 200, Mol, BE-2400, Belgium
- Dynamic Bioimaging Lab, Advanced Optical Microscopy Centre and Biomedical Research Institute, Hasselt University, Agoralaan C, Diepenbeek, BE-3590, Belgium
| | - Matthew I Gibson
- Department of Chemistry, University of Warwick, Gibbet Hill Road, CV4 7AL, Coventry, UK.
- Division of Biomedical Sciences, Warwick Medical School, University of Warwick, Gibbet Hill Road, CV4 7AL, Coventry, UK
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7
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Baker AN, Hawker-Bond GW, Georgiou PG, Dedola S, Field RA, Gibson MI. Glycosylated gold nanoparticles in point of care diagnostics: from aggregation to lateral flow. Chem Soc Rev 2022; 51:7238-7259. [PMID: 35894819 PMCID: PMC9377422 DOI: 10.1039/d2cs00267a] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Current point-of-care lateral flow immunoassays, such as the home pregnancy test, rely on proteins as detection units (e.g. antibodies) to sense for analytes. Glycans play a fundamental role in biological signalling and recognition events such as pathogen adhesion and hence they are promising future alternatives to antibody-based biosensing and diagnostics. Here we introduce the potential of glycans coupled to gold nanoparticles as recognition agents for lateral flow diagnostics. We first introduce the concept of lateral flow, including a case study of lateral flow use in the field compared to other diagnostic tools. We then introduce glycosylated materials, the affinity gains achieved by the cluster glycoside effect and the current use of these in aggregation based assays. Finally, the potential role of glycans in lateral flow are explained, and examples of their successful use given. Antibody-based lateral flow (immune) assays are well established, but here the emerging concept and potential of using glycans as the detection agents is reviewed.![]()
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Affiliation(s)
- Alexander N Baker
- Department of Chemistry, University of Warwick, Gibbet Hill Road, CV4 7AL, Coventry, UK.
| | - George W Hawker-Bond
- Oxford University Clinical Academic Graduate School, John Radcliffe Hospital Oxford, Oxford, OX3 9DU, UK
| | - Panagiotis G Georgiou
- Department of Chemistry, University of Warwick, Gibbet Hill Road, CV4 7AL, Coventry, UK.
| | | | - Robert A Field
- Iceni Glycoscience Ltd, Norwich, NR4 7GJ, UK.,Department of Chemistry and Manchester Institute of Biotechnology, University of Manchester, Manchester M1 7DN, UK
| | - Matthew I Gibson
- Department of Chemistry, University of Warwick, Gibbet Hill Road, CV4 7AL, Coventry, UK. .,Division of Biomedical Sciences, Warwick Medical School, University of Warwick, Gibbet Hill Road, CV4 7AL, Coventry, UK
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8
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Georgiou PG, Guy CS, Hasan M, Ahmad A, Richards SJ, Baker AN, Thakkar NV, Walker M, Pandey S, Anderson NR, Grammatopoulos D, Gibson MI. Plasmonic Detection of SARS-CoV-2 Spike Protein with Polymer-Stabilized Glycosylated Gold Nanorods. ACS Macro Lett 2022; 11:317-322. [PMID: 35575357 PMCID: PMC8928465 DOI: 10.1021/acsmacrolett.1c00716] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
![]()
The COVID-19 pandemic
has highlighted the need for innovative biosensing,
diagnostic, and surveillance platforms. Here we report that glycosylated,
polymer-stabilized, gold nanorods can bind the SARS-CoV-2 spike protein
and show correlation to the presence of SARS-CoV-2 in primary COVID-19
clinical samples. Telechelic polymers were prepared by reversible
addition–fragmentation chain-transfer polymerization, enabling
the capture of 2,3-sialyllactose and immobilization onto gold nanorods.
Control experiments with a panel of lectins and a galactosamine-terminated
polymer confirmed the selective binding. The glycosylated rods were
shown to give dose-dependent responses against recombinant truncated
SARS-CoV-2 spike protein, and the responses were further correlated
using primary patient swab samples. The essentiality of the anisotropic
particles for reducing the background interference is demonstrated.
This highlights the utility of polymer tethering of glycans for plasmonic
biosensors of infection.
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Affiliation(s)
| | - Collette S. Guy
- Department of Chemistry, University of Warwick, Gibbet Hill Road, CV4 7AL Coventry, U.K
- School of Life Sciences, University of Warwick, CV4 7AL Coventry, U.K
| | - Muhammad Hasan
- Department of Chemistry, University of Warwick, Gibbet Hill Road, CV4 7AL Coventry, U.K
| | - Ashfaq Ahmad
- Department of Chemistry, University of Warwick, Gibbet Hill Road, CV4 7AL Coventry, U.K
| | - Sarah-Jane Richards
- Department of Chemistry, University of Warwick, Gibbet Hill Road, CV4 7AL Coventry, U.K
| | - Alexander N. Baker
- Department of Chemistry, University of Warwick, Gibbet Hill Road, CV4 7AL Coventry, U.K
| | - Neer V. Thakkar
- Department of Chemistry, University of Warwick, Gibbet Hill Road, CV4 7AL Coventry, U.K
| | - Marc Walker
- Department of Physics, University of Warwick, Gibbet Hill Road, CV4 7AL Coventry, U.K
| | - Sarojini Pandey
- Institute of Precision Diagnostics and Translational Medicine, University Hospitals Coventry and Warwickshire NHS Trust, Clifford Bridge Road Walsgrave, Coventry CV2 2DX, U.K
| | - Neil R. Anderson
- Institute of Precision Diagnostics and Translational Medicine, University Hospitals Coventry and Warwickshire NHS Trust, Clifford Bridge Road Walsgrave, Coventry CV2 2DX, U.K
| | - Dimitris Grammatopoulos
- Warwick Medical School, University of Warwick, Gibbet Hill Road, CV4 7AL Coventry, U.K
- Institute of Precision Diagnostics and Translational Medicine, University Hospitals Coventry and Warwickshire NHS Trust, Clifford Bridge Road Walsgrave, Coventry CV2 2DX, U.K
| | - Matthew I. Gibson
- Department of Chemistry, University of Warwick, Gibbet Hill Road, CV4 7AL Coventry, U.K
- Warwick Medical School, University of Warwick, Gibbet Hill Road, CV4 7AL Coventry, U.K
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9
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Baker AN, Muguruza AR, Richards S, Georgiou PG, Goetz S, Walker M, Dedola S, Field RA, Gibson MI. Lateral Flow Glyco-Assays for the Rapid and Low-Cost Detection of Lectins-Polymeric Linkers and Particle Engineering Are Essential for Selectivity and Performance. Adv Healthc Mater 2022; 11:e2101784. [PMID: 34747143 PMCID: PMC7612396 DOI: 10.1002/adhm.202101784] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/28/2021] [Indexed: 12/13/2022]
Abstract
Lateral flow immuno-assays, such as the home pregnancy test, are rapid point-of-care diagnostics that use antibody-coated nanoparticles to bind antigens/analytes (e.g., viruses, toxins or hormones). Ease of use, no need for centralized infrastructure and low-cost, makes these devices appealing for rapid disease identification, especially in low-resource environments. Here glycosylated polymer-coated nanoparticles are demonstrated for the sensitive, label-free detection of lectins in lateral flow and flow-through. The systems introduced here use glycans, not antibodies, to provide recognition: a “lateral flow glyco-assay,” providing unique biosensing opportunities. Glycans are installed onto polymer termini and immobilized onto gold nanoparticles, providing colloidal stability but crucially also introducing assay tunability and selectivity. Using soybean agglutinin and Ricinus communis agglutinin I (RCA120) as model analytes, the impact of polymer chain length and nanoparticle core size are evaluated, with chain length found to have a significant effect on signal generation—highlighting the need to control the macromolecular architecture to tune response. With optimized systems, lectins are detectable at subnanomolar concentrations, comparable to antibody-based systems. Complete lateral flow devices are also assembled to show how these devices can be deployed in the “real world.” This work shows that glycan-binding can be a valuable tool in rapid diagnostics.
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Affiliation(s)
- Alexander N. Baker
- Department of Chemistry University of Warwick Gibbet Hill Road Coventry CV4 7AL UK
| | - Asier R. Muguruza
- Department of Chemistry University of Warwick Gibbet Hill Road Coventry CV4 7AL UK
- School of Chemistry University of Birmingham Edgbaston Birmingham B15 2TT UK
| | - Sarah‐Jane Richards
- Department of Chemistry University of Warwick Gibbet Hill Road Coventry CV4 7AL UK
| | | | - Stephen Goetz
- Iceni Diagnostics Ltd Norwich Research Park Norwich NR4 7GJ UK
| | - Marc Walker
- Department of Physics University of Warwick Gibbet Hill Road Coventry CV4 7AL UK
| | - Simone Dedola
- Iceni Diagnostics Ltd Norwich Research Park Norwich NR4 7GJ UK
| | - Robert A. Field
- Department of Chemistry and Manchester Institute of Biotechnology University of Manchester Manchester M1 7DN UK
| | - Matthew I. Gibson
- Department of Chemistry University of Warwick Gibbet Hill Road Coventry CV4 7AL UK
- Warwick Medical School University of Warwick Gibbet Hill Road Coventry CV4 7AL UK
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10
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Richards SJ, Gibson MI. Toward Glycomaterials with Selectivity as Well as Affinity. JACS AU 2021; 1:2089-2099. [PMID: 34984416 PMCID: PMC8717392 DOI: 10.1021/jacsau.1c00352] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Indexed: 05/08/2023]
Abstract
Multivalent glycosylated materials (polymers, surfaces, and particles) often show high affinity toward carbohydrate binding proteins (e.g., lectins) due to the nonlinear enhancement from the cluster glycoside effect. This affinity gain has potential in applications from diagnostics, biosensors, and targeted delivery to anti-infectives and in an understanding of basic glycobiology. This perspective highlights the question of selectivity, which is less often addressed due to the reductionist nature of glycomaterials and the promiscuity of many lectins. The use of macromolecular features, including architecture, heterogeneous ligand display, and the installation of non-natural glycans, to address this challenge is discussed, and examples of selectivity gains are given.
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Affiliation(s)
| | - Matthew I. Gibson
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, U.K.
- Warwick
Medical School, University of Warwick, Coventry CV4 7AL, U.K.
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11
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Velimirovic M, Pancaro A, Mildner R, Georgiou PG, Tirez K, Nelissen I, Johann C, Gibson MI, Vanhaecke F. Characterization of Gold Nanorods Conjugated with Synthetic Glycopolymers Using an Analytical Approach Based on spICP-SFMS and EAF4-MALS. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2720. [PMID: 34685161 PMCID: PMC8539460 DOI: 10.3390/nano11102720] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/12/2021] [Accepted: 10/12/2021] [Indexed: 12/13/2022]
Abstract
A new comprehensive analytical approach based on single-particle inductively coupled plasma-sector field mass spectrometry (spICP-SFMS) and electrical asymmetric-flow field-flow-fractionation combined with multi-angle light scattering detection (EAF4-MALS) has been examined for the characterization of galactosamine-terminated poly(N-hydroxyethyl acrylamide)-coated gold nanorods (GNRs) in two different degrees of polymerization (DP) by tuning the feed ratio (short: DP 35; long: DP 60). spICP-SFMS provided information on the particle number concentration, size and size distribution of the GNRs, and was found to be useful as an orthogonal method for fast characterization of GNRs. Glycoconjugated GNRs were separated and characterized via EAF4-MALS in terms of their size and charge and compared to the bare GNRs. In contrast to spICP-SFMS, EAF4-MALS was also able of providing an estimate of the thickness of the glycopolymer coating on the GNRs surface.
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Affiliation(s)
- Milica Velimirovic
- Department of Chemistry, Atomic & Mass Spectrometry–A&MS Research Group, Campus Sterre, Ghent University, Krijgslaan 281-S12, 9000 Ghent, Belgium;
- Flemish Institute for Technological Research (VITO), Boeretang 200, 2400 Mol, Belgium; (A.P.); (K.T.); (I.N.)
| | - Alessia Pancaro
- Flemish Institute for Technological Research (VITO), Boeretang 200, 2400 Mol, Belgium; (A.P.); (K.T.); (I.N.)
- Advanced Optical Microscopy Centre and Biomedical Research Institute, Hasselt University, 3590 Diepenbeek, Belgium
| | - Robert Mildner
- Wyatt Technology Europe GmbH, Hochstrasse 12a, 56307 Dernbach, Germany; (R.M.); (C.J.)
| | - Panagiotis G. Georgiou
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK; (P.G.G.); (M.I.G.)
| | - Kristof Tirez
- Flemish Institute for Technological Research (VITO), Boeretang 200, 2400 Mol, Belgium; (A.P.); (K.T.); (I.N.)
| | - Inge Nelissen
- Flemish Institute for Technological Research (VITO), Boeretang 200, 2400 Mol, Belgium; (A.P.); (K.T.); (I.N.)
| | - Christoph Johann
- Wyatt Technology Europe GmbH, Hochstrasse 12a, 56307 Dernbach, Germany; (R.M.); (C.J.)
| | - Matthew I. Gibson
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK; (P.G.G.); (M.I.G.)
- Warwick Medical School, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
| | - Frank Vanhaecke
- Department of Chemistry, Atomic & Mass Spectrometry–A&MS Research Group, Campus Sterre, Ghent University, Krijgslaan 281-S12, 9000 Ghent, Belgium;
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12
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Chen Y, Alba M, Tieu T, Tong Z, Minhas RS, Rudd D, Voelcker NH, Cifuentes-Rius A, Elnathan R. Engineering Micro–Nanomaterials for Biomedical Translation. ADVANCED NANOBIOMED RESEARCH 2021. [DOI: 10.1002/anbr.202100002] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- Yaping Chen
- Monash Institute of Pharmaceutical Sciences Monash University 381 Royal Parade Parkville VIC 3052 Australia
- Melbourne Centre for Nanofabrication Victorian Node of the Australian National Fabrication Facility 151 Wellington Road Clayton VIC 3168 Australia
| | - Maria Alba
- Monash Institute of Pharmaceutical Sciences Monash University 381 Royal Parade Parkville VIC 3052 Australia
- Melbourne Centre for Nanofabrication Victorian Node of the Australian National Fabrication Facility 151 Wellington Road Clayton VIC 3168 Australia
| | - Terence Tieu
- Monash Institute of Pharmaceutical Sciences Monash University 381 Royal Parade Parkville VIC 3052 Australia
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Manufacturing Commonwealth Scientific and Industrial Research Organisation (CSIRO) Clayton VIC 3168 Australia
| | - Ziqiu Tong
- Monash Institute of Pharmaceutical Sciences Monash University 381 Royal Parade Parkville VIC 3052 Australia
| | - Rajpreet Singh Minhas
- Monash Institute of Pharmaceutical Sciences Monash University 381 Royal Parade Parkville VIC 3052 Australia
- Melbourne Centre for Nanofabrication Victorian Node of the Australian National Fabrication Facility 151 Wellington Road Clayton VIC 3168 Australia
| | - David Rudd
- Monash Institute of Pharmaceutical Sciences Monash University 381 Royal Parade Parkville VIC 3052 Australia
- Melbourne Centre for Nanofabrication Victorian Node of the Australian National Fabrication Facility 151 Wellington Road Clayton VIC 3168 Australia
| | - Nicolas H. Voelcker
- Monash Institute of Pharmaceutical Sciences Monash University 381 Royal Parade Parkville VIC 3052 Australia
- Melbourne Centre for Nanofabrication Victorian Node of the Australian National Fabrication Facility 151 Wellington Road Clayton VIC 3168 Australia
- Department of Materials Science and Engineering Monash University 22 Alliance Lane Clayton VIC 3168 Australia
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Manufacturing Commonwealth Scientific and Industrial Research Organisation (CSIRO) Clayton VIC 3168 Australia
- INM-Leibniz Institute for New Materials Campus D2 2 Saarbrücken 66123 Germany
| | - Anna Cifuentes-Rius
- Monash Institute of Pharmaceutical Sciences Monash University 381 Royal Parade Parkville VIC 3052 Australia
| | - Roey Elnathan
- Monash Institute of Pharmaceutical Sciences Monash University 381 Royal Parade Parkville VIC 3052 Australia
- Melbourne Centre for Nanofabrication Victorian Node of the Australian National Fabrication Facility 151 Wellington Road Clayton VIC 3168 Australia
- Department of Materials Science and Engineering Monash University 22 Alliance Lane Clayton VIC 3168 Australia
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13
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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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14
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Pancaro A, Szymonik M, Georgiou PG, Baker AN, Walker M, Adriaensens P, Hendrix J, Gibson MI, Nelissen I. The polymeric glyco-linker controls the signal outputs for plasmonic gold nanorod biosensors due to biocorona formation. NANOSCALE 2021; 13:10837-10848. [PMID: 34114594 PMCID: PMC8223873 DOI: 10.1039/d1nr01548f] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 06/03/2021] [Indexed: 05/13/2023]
Abstract
Gold nanorods (GNRs) are a promising platform for nanoplasmonic biosensing. The localised surface plasmon resonance (LSPR) peak of GNRs is located in the near-infrared optical window and is sensitive to local binding events, enabling label-free detection of biomarkers in complex biological fluids. A key challenge in the development of such sensors is achieving target affinity and selectivity, while both minimizing non-specific binding and maintaining colloidal stability. Herein, we reveal how GNRs decorated with galactosamine-terminated polymer ligands display significantly different binding responses in buffer compared to serum, due to biocorona formation, and how biocorona displacement due to lectin binding plays a key role in their optical responses. GNRs were coated with either poly(N-(2-hydroxypropyl)methacrylamide) (PHPMA) or poly(N-hydroxyethyl acrylamide) (PHEA) prepared via reversible addition-fragmentation chain-transfer (RAFT) polymerisation and end-functionalised with galactosamine (Gal) as the lectin-targeting unit. In buffer Gal-PHEA-coated GNRs aggregated upon soybean agglutinin (SBA) addition, whereas Gal-PHPMA-coated GNRs exhibited a red-shift of the LSPR spectrum without aggregation. In contrast, when incubated in serum Gal-PHPMA-coated nanorods showed no binding response, while Gal-PHEA GNRs exhibited a dose-dependent blue-shift of the LSPR peak, which is the opposite direction (red-shift) to what was observed in buffer. This differential behaviour was attributed to biocorona formation onto both polymer-coated GNRs, shown by differential centrifugal sedimentation and nanoparticle tracking analysis. Upon addition of SBA to the Gal-PHEA coated nanorods, signal was generated due to displacement of weakly-bound biocorona components by lectin binding. However, in the case of Gal-PHPMA which had a thicker corona, attributed to lower polymer grafting densities, addition of SBA did not lead to biocorona displacement and there was no signal output. These results show that plasmonic optical responses in complex biological media can be significantly affected by biocorona formation, and that biocorona formation itself does not prevent sensing so long as its exact nature (e.g. 'hard versus soft') is tuned.
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Affiliation(s)
- Alessia Pancaro
- Health Unit, Flemish Institute for Technological Research (VITO), Boeretang 200, Mol, BE-2400, Belgium. and Dynamic Bioimaging Lab, Advanced Optical Microscopy Centre and Biomedical Research Institute, Hasselt University, Agoralaan C, Diepenbeek, BE-3590, Belgium
| | - Michal Szymonik
- Health Unit, Flemish Institute for Technological Research (VITO), Boeretang 200, Mol, BE-2400, Belgium.
| | - Panagiotis G Georgiou
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK.
| | - Alexander N Baker
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK.
| | - Marc Walker
- Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK
| | - Peter Adriaensens
- Applied and Analytical Chemistry, Institute for Materials Research, Hasselt University, Agoralaan D, Diepenbeek, BE-3590, Belgium
| | - Jelle Hendrix
- Dynamic Bioimaging Lab, Advanced Optical Microscopy Centre and Biomedical Research Institute, Hasselt University, Agoralaan C, Diepenbeek, BE-3590, Belgium
| | - Matthew I Gibson
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK. and Warwick Medical School, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK
| | - Inge Nelissen
- Health Unit, Flemish Institute for Technological Research (VITO), Boeretang 200, Mol, BE-2400, Belgium.
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15
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Derakhshan MA, Amani A, Faridi-Majidi R. State-of-the-Art of Nanodiagnostics and Nanotherapeutics against SARS-CoV-2. ACS APPLIED MATERIALS & INTERFACES 2021; 13:14816-14843. [PMID: 33779135 PMCID: PMC8028022 DOI: 10.1021/acsami.0c22381] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 03/17/2021] [Indexed: 05/02/2023]
Abstract
The pandemic outbreak of SARS-CoV-2, with millions of infected patients worldwide, has severely challenged all aspects of public health. In this regard, early and rapid detection of infected cases and providing effective therapeutics against the virus are in urgent demand. Along with conventional clinical protocols, nanomaterial-based diagnostics and therapeutics hold a great potential against coronavirus disease 2019 (COVID-19). Indeed, nanoparticles with their outstanding characteristics would render additional advantages to the current approaches for rapid and accurate diagnosis and also developing prophylactic vaccines or antiviral therapeutics. In this review, besides presenting an overview of the coronaviruses and SARS-CoV-2, we discuss the introduced nanomaterial-based detection assays and devices and also antiviral formulations and vaccines for coronaviruses.
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Affiliation(s)
- Mohammad Ali Derakhshan
- Department
of Medical Nanotechnology, School of Advanced Medical Sciences and
Technologies, Shiraz University of Medical
Sciences, Shiraz, Iran
- Nanomedicine
and Nanobiology Research Center, Shiraz
University of Medical Sciences, Shiraz Iran
| | - Amir Amani
- Natural
Products and Medicinal Plants Research Center, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | - Reza Faridi-Majidi
- Department
of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
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16
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Upadhya R, Kosuri S, Tamasi M, Meyer TA, Atta S, Webb MA, Gormley AJ. Automation and data-driven design of polymer therapeutics. Adv Drug Deliv Rev 2021; 171:1-28. [PMID: 33242537 PMCID: PMC8127395 DOI: 10.1016/j.addr.2020.11.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/10/2020] [Accepted: 11/12/2020] [Indexed: 01/01/2023]
Abstract
Polymers are uniquely suited for drug delivery and biomaterial applications due to tunable structural parameters such as length, composition, architecture, and valency. To facilitate designs, researchers may explore combinatorial libraries in a high throughput fashion to correlate structure to function. However, traditional polymerization reactions including controlled living radical polymerization (CLRP) and ring-opening polymerization (ROP) require inert reaction conditions and extensive expertise to implement. With the advent of air-tolerance and automation, several polymerization techniques are now compatible with well plates and can be carried out at the benchtop, making high throughput synthesis and high throughput screening (HTS) possible. To avoid HTS pitfalls often described as "fishing expeditions," it is crucial to employ intelligent and big data approaches to maximize experimental efficiency. This is where the disruptive technologies of machine learning (ML) and artificial intelligence (AI) will likely play a role. In fact, ML and AI are already impacting small molecule drug discovery and showing signs of emerging in drug delivery. In this review, we present state-of-the-art research in drug delivery, gene delivery, antimicrobial polymers, and bioactive polymers alongside data-driven developments in drug design and organic synthesis. From this insight, important lessons are revealed for the polymer therapeutics community including the value of a closed loop design-build-test-learn workflow. This is an exciting time as researchers will gain the ability to fully explore the polymer structural landscape and establish quantitative structure-property relationships (QSPRs) with biological significance.
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Affiliation(s)
| | | | | | | | - Supriya Atta
- Rutgers, The State University of New Jersey, USA
| | - Michael A Webb
- Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ 08540, USA
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17
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Baker A, Richards SJ, Guy CS, Congdon TR, Hasan M, Zwetsloot AJ, Gallo A, Lewandowski JR, Stansfeld PJ, Straube A, Walker M, Chessa S, Pergolizzi G, Dedola S, Field RA, Gibson MI. The SARS-COV-2 Spike Protein Binds Sialic Acids and Enables Rapid Detection in a Lateral Flow Point of Care Diagnostic Device. ACS CENTRAL SCIENCE 2020; 6:2046-2052. [PMID: 33269329 PMCID: PMC7523238 DOI: 10.1021/acscentsci.0c00855] [Citation(s) in RCA: 176] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Indexed: 05/18/2023]
Abstract
There is an urgent need to understand the behavior of the novel coronavirus (SARS-COV-2), which is the causative agent of COVID-19, and to develop point-of-care diagnostics. Here, a glyconanoparticle platform is used to discover that N-acetyl neuraminic acid has affinity toward the SARS-COV-2 spike glycoprotein, demonstrating its glycan-binding function. Optimization of the particle size and coating enabled detection of the spike glycoprotein in lateral flow and showed selectivity over the SARS-COV-1 spike protein. Using a virus-like particle and a pseudotyped lentivirus model, paper-based lateral flow detection was demonstrated in under 30 min, showing the potential of this system as a low-cost detection platform.
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Affiliation(s)
| | | | - Collette S. Guy
- Department
of Chemistry, University of Warwick, Coventry, CV4 7AL, U.K.
- School
of Life Sciences, University of Warwick, Coventry, CV4 7AL, U.K.
| | - Thomas R. Congdon
- Department
of Chemistry, University of Warwick, Coventry, CV4 7AL, U.K.
| | - Muhammad Hasan
- Department
of Chemistry, University of Warwick, Coventry, CV4 7AL, U.K.
| | | | - Angelo Gallo
- Department
of Chemistry, University of Warwick, Coventry, CV4 7AL, U.K.
| | | | - Phillip J. Stansfeld
- Department
of Chemistry, University of Warwick, Coventry, CV4 7AL, U.K.
- School
of Life Sciences, University of Warwick, Coventry, CV4 7AL, U.K.
| | - Anne Straube
- Warwick
Medical School, University of Warwick, Coventry, CV4 7AL, U.K.
| | - Marc Walker
- Department
of Physics, University of Warwick, Coventry, CV4 7AL, U.K.
| | - Simona Chessa
- Iceni
Diagnostics Ltd, Norwich Research Park, Norwich, NR4 7GJ, U.K.
| | - Giulia Pergolizzi
- Iceni
Diagnostics Ltd, Norwich Research Park, Norwich, NR4 7GJ, U.K.
| | - Simone Dedola
- Iceni
Diagnostics Ltd, Norwich Research Park, Norwich, NR4 7GJ, U.K.
| | - Robert A. Field
- Iceni
Diagnostics Ltd, Norwich Research Park, Norwich, NR4 7GJ, U.K.
- Department
of Chemistry and Manchester Institute of Biotechnology, University of Manchester, Manchester, M1 7DN, U.K.
| | - Matthew I. Gibson
- Department
of Chemistry, University of Warwick, Coventry, CV4 7AL, U.K.
- Warwick
Medical School, University of Warwick, Coventry, CV4 7AL, U.K.
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18
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Richards SJ, Keenan T, Vendeville JB, Wheatley DE, Chidwick H, Budhadev D, Council CE, Webster CS, Ledru H, Baker AN, Walker M, Galan MC, Linclau B, Fascione MA, Gibson MI. Introducing affinity and selectivity into galectin-targeting nanoparticles with fluorinated glycan ligands. Chem Sci 2020; 12:905-910. [PMID: 34163856 PMCID: PMC8179109 DOI: 10.1039/d0sc05360k] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Galectins are potential biomarkers and therapeutic targets. However, galectins display broad affinity towards β-galactosides meaning glycan-based (nano)biosensors lack the required selectivity and affinity. Using a polymer-stabilized nanoparticle biosensing platform, we herein demonstrate that the specificity of immobilised lacto-N-biose towards galectins can be ‘turned on/off’ by using site-specific glycan fluorination and in some cases reversal of specificity can be achieved. The panel of fluoro-glycans were obtained by a chemoenzymatic approach, exploiting BiGalK and BiGalHexNAcP enzymes from Bifidobacterium infantis which are shown to tolerate fluorinated glycans, introducing structural diversity which would be very laborious by chemical methods alone. These results demonstrate that integrating non-natural, fluorinated glycans into nanomaterials can encode unprecedented selectivity with potential applications in biosensing. A chemo-enzymatic site-specific fluorination strategy is employed to obtain glyco-nanoparticles with tuneable selectivity towards galectins.![]()
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Affiliation(s)
| | - Tessa Keenan
- Department of Chemistry, University of York Heslington York YO10 5DD UK
| | | | - David E Wheatley
- School of Chemistry, University of Southampton Highfield Southampton SO171BJ UK
| | - Harriet Chidwick
- Department of Chemistry, University of York Heslington York YO10 5DD UK
| | - Darshita Budhadev
- Department of Chemistry, University of York Heslington York YO10 5DD UK
| | - Claire E Council
- School of Chemistry, University of Southampton Highfield Southampton SO171BJ UK
| | - Claire S Webster
- School of Chemistry, University of Bristol Cantock's Close Bristol BS8 1TS UK
| | - Helene Ledru
- School of Chemistry, University of Bristol Cantock's Close Bristol BS8 1TS UK
| | | | - Marc Walker
- Department of Physics, University of Warwick CV4 7AL UK
| | - M Carmen Galan
- School of Chemistry, University of Bristol Cantock's Close Bristol BS8 1TS UK
| | - Bruno Linclau
- School of Chemistry, University of Southampton Highfield Southampton SO171BJ UK
| | - Martin A Fascione
- Department of Chemistry, University of York Heslington York YO10 5DD UK
| | - Matthew I Gibson
- Department of Chemistry, University of Warwick CV4 7AL UK .,Warwick Medical School, University of Warwick CV4 7AL UK
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19
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Laezza A, Georgiou PG, Richards SJ, Baker AN, Walker M, Gibson MI. Protecting Group Free Synthesis of Glyconanoparticles Using Amino-Oxy-Terminated Polymer Ligands. Bioconjug Chem 2020; 31:2392-2403. [PMID: 32951418 DOI: 10.1021/acs.bioconjchem.0c00465] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Glycomaterials display enhanced binding affinity to carbohydrate-binding proteins due to the nonlinear enhancement associated with the cluster glycoside effect. Gold nanoparticles bearing glycans have attracted significant interest in particular. This is due to their versatility, their highly tunable gold cores (size and shape), and their application in biosensors and diagnostic tools. However, conjugating glycans onto these materials can be challenging, necessitating either multiple protecting group manipulations or the use of only simple glycans. This results in limited structural diversity compared to glycoarrays which can include hundreds of glycans. Here we report a method to generate glyconanoparticles from unprotected glycans by conjugation to polymer tethers bearing terminal amino-oxy groups, which are then immobilized onto gold nanoparticles. Using an isotope-labeled glycan, the efficiency of this reaction was probed in detail to confirm conjugation, with 25% of end-groups being functionalized, predominantly in the ring-closed form. Facile post-glycosylation purification is achieved by simple centrifugation/washing cycles to remove excess glycan and polymer. This streamlined synthetic approach may be particularly useful for the preparation of glyconanoparticle libraries using automation, to identify hits to be taken forward using more conventional synthetic methods. Exemplar lectin-binding studies were undertaken to confirm the availability of the glycans for binding and show this is a powerful tool for rapid assessment of multivalent glycan binding.
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20
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Alobaid M, Richards SJ, Alexander M, Gibson M, Ghaemmaghami A. Developing immune-regulatory materials using immobilized monosaccharides with immune-instructive properties. Mater Today Bio 2020; 8:100080. [PMID: 33205040 PMCID: PMC7649522 DOI: 10.1016/j.mtbio.2020.100080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/17/2020] [Accepted: 09/21/2020] [Indexed: 11/15/2022] Open
Abstract
New strategies for immune modulation have shown real promise in regenerative medicine as well as the fight against autoimmune diseases, allergies, and cancer. Dendritic cells (DCs) are gatekeepers of the immune system and their ability in shaping the adaptive immune responses makes DCs ideal targets for immune modulation. Carbohydrates are abundant in different biological systems and are known to modulate DC phenotype and function. However, how simple monosaccharides instruct DC function is less well understood. In this study, we used a combinatorial array of immobilized monosaccharides to investigate how they modulate DC phenotype and function and crucially the impact of such changes on downstream adaptive immune responses. Our data show that a selection of monosaccharides significantly suppress lipopolysaccharide-induced DC activation as evidenced by a reduction in CD40 expression, IL-12 production, and indoleamine 2,3-dioxygenase activity, while inducing a significant increase in IL-10 production. These changes are indicative of the induction of an anti-inflammatory or regulatory phenotype in DCs, which was further confirmed in DC-T cell co-cultures where DCs cultured on the 'regulatory' monosaccharide-coated surfaces were shown to induce naïve T cell polarization toward regulatory phenotype. Our data also highlighted a selection of monosaccharides that are able to promote mixed Treg and Th17 cell differentiation, a T cell phenotype expected to be highly immune suppressive. These data show the potential immunomodulatory effects of immobilized monosaccharides in priming DCs and skewing T cell differentiation toward an immune-regulatory phenotype. The ability to fine-tune immune responses using these simple carbohydrate combinations (e.g. as coatings for existing materials) can be utilized as novel tools for immune modulation with potential applications in regenerative medicine, implantable medical devices, and wound healing where reduction of inflammatory responses and maintaining immune homeostasis are desirable.
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Key Words
- (Gal1), 100% 1-amino-1-deoxy-β-d-galactose
- (Gal1–Gal2), 50% 1-amino-1-deoxy-β-d-galactose + 50% 2-amino-2-deoxy-β-d-galactose
- (Gal2), 100% 2-amino-2-deoxy-β-d-galactose
- (Gal2–Man1), 90% 2-amino-2-deoxy-β-d-galactose + 10% 1-amino-1-deoxy-β-d-mannose
- (Gal2–Man2), 2-amino-2-deoxy-β-d-galactose + 10% 2-amino-2-deoxy-β-d-mannose
- (Man1–Man2), 40% 1-amino-1-deoxy-β-d-mannose + 60% 2-amino-2-deoxy-β-d-mannose
- CLR, C-type lectin receptor
- Carbohydrates
- DC-SIGN, Dendritic cell-specific intercellular adhesion molecule 3-grabbing nonintegrin
- DCs, Dendritic cells
- Dendritic cells
- FBS, Fetal bovine serum
- Fucose
- Galactose
- IDO, Indoleamine 2,3-dioxygenase
- Immune modulation
- Immune-instructive materials
- LPS, Lipopolysaccharide
- MFI, Median fluorescence intensity
- MR, Mannose receptor
- MT, 1-methyl-DL-tryptophan
- Mannose
- PRR, Pattern recognition receptor
- Polymers
- T cells
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Affiliation(s)
- M.A. Alobaid
- Immunology & Immuno-Bioengineering, School of Life Sciences, Faculty of Medicine and Health Sciences, University of Nottingham, Nottingham, NG7 2RD, United Kingdom
| | - S.-J. Richards
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - M.R. Alexander
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, United Kingdom
| | - M.I. Gibson
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
- Warwick Medical School, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - A.M. Ghaemmaghami
- Immunology & Immuno-Bioengineering, School of Life Sciences, Faculty of Medicine and Health Sciences, University of Nottingham, Nottingham, NG7 2RD, United Kingdom
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90024, USA
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