1
|
Nilsson PH, Al-Majdoub M, Ibrahim A, Aseel O, Suriyanarayanan S, Andersson L, Fostock S, Aastrup T, Tjernberg I, Rydén I, Nicholls IA. Quartz Crystal Microbalance Platform for SARS-CoV-2 Immuno-Diagnostics. Int J Mol Sci 2023; 24:16705. [PMID: 38069027 PMCID: PMC10705953 DOI: 10.3390/ijms242316705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/14/2023] [Accepted: 11/22/2023] [Indexed: 12/18/2023] Open
Abstract
Rapid and accurate serological analysis of SARS-CoV-2 antibodies is important for assessing immune protection from vaccination or infection of individuals and for projecting virus spread within a population. The quartz crystal microbalance (QCM) is a label-free flow-based sensor platform that offers an opportunity to detect the binding of a fluid-phase ligand to an immobilized target molecule in real time. A QCM-based assay was developed for the detection of SARS-CoV-2 antibody binding and evaluated for assay reproducibility. The assay was cross-compared to the Roche electrochemiluminescence assay (ECLIA) Elecsys® Anti-SARS-CoV-2 serology test kit and YHLO's chemiluminescence immunoassay (CLIA). The day-to-day reproducibility of the assay had a correlation of r2 = 0.99, p < 0.001. The assay linearity was r2 = 0.96, p < 0.001, for dilution in both serum and buffer. In the cross-comparison analysis of 119 human serum samples, 59 were positive in the Roche, 52 in the YHLO, and 48 in the QCM immunoassay. Despite differences in the detection method and antigen used for antibody capture, there was good coherence between the assays, 80-100% for positive and 96-100% for negative test results. In summation, the QCM-based SARS-CoV-2 IgG immunoassay showed high reproducibility and linearity, along with good coherence with the ELISA-based assays. Still, factors including antibody titer and antigen-binding affinity may differentially affect the various assays' responses.
Collapse
Affiliation(s)
- Per H. Nilsson
- Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry and Biomedical Sciences, Linnaeus University, SE-39182 Kalmar, Sweden; (P.H.N.); (S.S.); (L.A.)
- Department of Immunology, University of Oslo and Oslo University Hospital Rikshospitalet, Sognsvannsveien 20, NO-0372 Oslo, Norway
| | - Mahmoud Al-Majdoub
- Attana AB, Greta Arwidssons Väg 21, SE-11419 Stockholm, Sweden; (M.A.-M.); (A.I.); (S.F.); (T.A.)
| | - Ahmed Ibrahim
- Attana AB, Greta Arwidssons Väg 21, SE-11419 Stockholm, Sweden; (M.A.-M.); (A.I.); (S.F.); (T.A.)
| | - Obaidullah Aseel
- Medical Programme, Faculty of Medicine and Health Sciences, Linköping University, SE-58225 Linköping, Sweden;
| | - Subramanian Suriyanarayanan
- Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry and Biomedical Sciences, Linnaeus University, SE-39182 Kalmar, Sweden; (P.H.N.); (S.S.); (L.A.)
| | - Linnea Andersson
- Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry and Biomedical Sciences, Linnaeus University, SE-39182 Kalmar, Sweden; (P.H.N.); (S.S.); (L.A.)
| | - Samir Fostock
- Attana AB, Greta Arwidssons Väg 21, SE-11419 Stockholm, Sweden; (M.A.-M.); (A.I.); (S.F.); (T.A.)
| | - Teodor Aastrup
- Attana AB, Greta Arwidssons Väg 21, SE-11419 Stockholm, Sweden; (M.A.-M.); (A.I.); (S.F.); (T.A.)
| | - Ivar Tjernberg
- Department of Clinical Chemistry and Transfusion Medicine, Region Kalmar County, SE-39185 Kalmar, Sweden;
- Department of Biomedical and Clinical Sciences, Division of Inflammation and Infection, Linköping University, SE-58183 Linköping, Sweden
| | - Ingvar Rydén
- Department of Research, Region Kalmar County, SE-39185 Kalmar, Sweden;
- Department of Biomedical and Clinical Sciences, Division of Clinical Chemistry and Pharmacology, Linköping University, SE-58183 Linköping, Sweden
| | - Ian A. Nicholls
- Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry and Biomedical Sciences, Linnaeus University, SE-39182 Kalmar, Sweden; (P.H.N.); (S.S.); (L.A.)
| |
Collapse
|
2
|
Behan J, Xie Z, Wang YF, Yang X, Aastrup T, Yan Y, Adumeau L, Dawson KA. Quartz Crystal Microbalance Method to Measure Nanoparticle-Receptor Interactions and Evaluate Nanoparticle Design Efficiency. JACS Au 2023; 3:1623-1633. [PMID: 37388690 PMCID: PMC10301671 DOI: 10.1021/jacsau.3c00084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 04/03/2023] [Accepted: 04/24/2023] [Indexed: 07/01/2023]
Abstract
Conjugation of biomolecules on the surface of nanoparticles (NPs) to achieve active targeting is widely investigated within the scientific community. However, while a basic framework of the physicochemical processes underpinning bionanoparticle recognition is now emerging, the precise evaluation of the interactions between engineered NPs and biological targets remains underdeveloped. Here, we show how the adaptation of a method currently used to evaluate molecular ligand-receptor interactions by quartz crystal microbalance (QCM) can be used to obtain concrete insights into interactions between different NP architectures and assemblies of receptors. Using a model bionanoparticle grafted with oriented apolipoprotein E (ApoE) fragments, we examine key aspects of bionanoparticle engineering for effective interactions with target receptors. We show that the QCM technique can be used to rapidly measure construct-receptor interactions across biologically relevant exchange times. We contrast random adsorption of the ligand at the surface of the NPs, resulting in no measurable interaction with target receptors, to grafted oriented constructs, which are strongly recognized even at lower graft densities. The effects of other basic parameters impacting the interaction such as ligand graft density, receptor immobilization density, and linker length were also efficiently evaluated with this technique. Dramatic changes in interaction outcomes with subtle alterations in these parameters highlight the general importance of measuring the interactions between engineered NPs and target receptors ex situ early on in the construct development process for the rational design of bionanoparticles.
Collapse
Affiliation(s)
- James
A. Behan
- Centre
for BioNano Interactions, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Zengchun Xie
- Centre
for BioNano Interactions, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Yi-Feng Wang
- Centre
for BioNano Interactions, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Xiaoliang Yang
- Centre
for BioNano Interactions, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Teodor Aastrup
- Attana
AB, Greta Arwidssons
Väg 21, Stockholm SE-11419, Sweden
| | - Yan Yan
- UCD
Conway Institute of Biomolecular and Biomedical Research, School of
Biomolecular and Biomedical Science, University
College Dublin, Belfield, Dublin 4, Ireland
| | - Laurent Adumeau
- Centre
for BioNano Interactions, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Kenneth A. Dawson
- Centre
for BioNano Interactions, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| |
Collapse
|
3
|
Song Q, Li Q, Chao S, Chen X, Li R, Lu Y, Aastrup T, Pei Z. A dynamic reversible phenylboronic acid sensor for real-time determination of protein-carbohydrate interactions on living cancer cells. Chem Commun (Camb) 2022; 58:13731-13734. [PMID: 36444745 DOI: 10.1039/d2cc05788c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Real-time detection of glycosylation on label-free cancer cell surfaces is of significance for the diagnosis and treatment of cancer. In this work, we have successfully developed a novel dynamic reversible sensor based on pH-sensitive phenylboronic esters to determine in real-time the binding kinetics of protein-carbohydrate interactions on suspension cancer cell surfaces using a quartz crystal microbalance (QCM) technique.
Collapse
Affiliation(s)
- Quanquan Song
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, P. R. China.
| | - Qian Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, P. R. China.
| | - Shuang Chao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, P. R. China.
| | - Xian Chen
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, P. R. China.
| | - Ronghui Li
- Hebei Key Laboratory of Analysis and Control of Zoonotic Pathogenic Microorganism and College of Science & Technology, Hebei Agricultural University, Huanghua, Hebei 061100, China.
| | - Yuchao Lu
- Hebei Key Laboratory of Analysis and Control of Zoonotic Pathogenic Microorganism and College of Science & Technology, Hebei Agricultural University, Huanghua, Hebei 061100, China.
| | | | - Zhichao Pei
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, P. R. China.
| |
Collapse
|
4
|
Mahajan R, Suriyanarayanan S, Olsson GD, Wiklander JG, Aastrup T, Sellergren B, Nicholls IA. Oxytocin-Selective Nanogel Antibody Mimics. Int J Mol Sci 2022; 23:ijms23052534. [PMID: 35269677 PMCID: PMC8909970 DOI: 10.3390/ijms23052534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/18/2022] [Accepted: 02/22/2022] [Indexed: 11/26/2022] Open
Abstract
Oxytocin imprinted polymer nanoparticles were synthesized by glass bead supported solid phase synthesis, with NMR and molecular dynamics studies used to investigate monomer–template interactions. The nanoparticles were characterized by dynamic light scattering, scanning- and transmission electron microscopy and X-ray photoelectron spectroscopy. Investigation of nanoparticle-template recognition using quartz crystal microbalance-based studies revealed sub-nanomolar affinity, kd ≈ 0.3 ± 0.02 nM (standard error of the mean), comparable to that of commercial polyclonal antibodies, kd ≈ 0.02–0.2 nM.
Collapse
Affiliation(s)
- Rashmi Mahajan
- Bioorganic and Biophysical Chemistry Laboratory, Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry and Biomedical Sciences, Linnaeus University, 39182 Kalmar, Sweden; (R.M.); (G.D.O.); (J.G.W.)
| | - Subramanian Suriyanarayanan
- Bioorganic and Biophysical Chemistry Laboratory, Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry and Biomedical Sciences, Linnaeus University, 39182 Kalmar, Sweden; (R.M.); (G.D.O.); (J.G.W.)
- Correspondence: (S.S.); (I.A.N.); Tel.: +46-480-446-200 (S.S. & I.A.N.)
| | - Gustaf D. Olsson
- Bioorganic and Biophysical Chemistry Laboratory, Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry and Biomedical Sciences, Linnaeus University, 39182 Kalmar, Sweden; (R.M.); (G.D.O.); (J.G.W.)
| | - Jesper G. Wiklander
- Bioorganic and Biophysical Chemistry Laboratory, Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry and Biomedical Sciences, Linnaeus University, 39182 Kalmar, Sweden; (R.M.); (G.D.O.); (J.G.W.)
| | - Teodor Aastrup
- Attana AB, Greta Arwidssons Väg 21, 11419 Stockholm, Sweden;
| | - Börje Sellergren
- Biofilms Research Center for Biointerfaces, Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, 20506 Malmö, Sweden;
| | - Ian A. Nicholls
- Bioorganic and Biophysical Chemistry Laboratory, Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry and Biomedical Sciences, Linnaeus University, 39182 Kalmar, Sweden; (R.M.); (G.D.O.); (J.G.W.)
- Correspondence: (S.S.); (I.A.N.); Tel.: +46-480-446-200 (S.S. & I.A.N.)
| |
Collapse
|
5
|
Hjalmarsson N, Bergendal E, Wang YL, Munavirov B, Wallinder D, Glavatskih S, Aastrup T, Atkin R, Furó I, Rutland MW. Electro-Responsive Surface Composition and Kinetics of an Ionic Liquid in a Polar Oil. Langmuir 2019; 35:15692-15700. [PMID: 31581771 DOI: 10.1021/acs.langmuir.9b02119] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The quartz crystal microbalance (QCM) has been used to study how the interfacial layer of an ionic liquid dissolved in a polar oil at low weight percentages responds to changes in applied potential. The changes in surface composition at the QCM gold surface depend on both the magnitude and sign of the applied potential. The time-resolved response indicates that the relaxation kinetics are limited by the diffusion of ions in the interfacial region and not in the bulk, since there is no concentration dependence. The measured mass changes cannot be explained only in terms of simple ion exchange; the relative molecular volumes of the ions and the density changes in response to ion exclusion must be considered. The relaxation behavior of the potential between the electrodes upon disconnecting the applied potential is more complex than that observed for pure ionic liquids, but a measure of the surface charge can be extracted from the exponential decay when the rapid initial potential drop is accounted for. The adsorbed film at the gold surface consists predominantly of ionic liquid despite the low concentration, which is unsurprising given the surtactant-like structures of (some of) the ionic liquid ions. Changes in response to potential correspond to changes in the relative numbers of cations and anions, rather than a change in the oil composition. No evidence for an electric field induced change in viscosity is observed. This work shows conclusively that electric potentials can be used to control the surface composition, even in an oil-based system, and paves the way for other ion solvent studies.
Collapse
Affiliation(s)
| | | | | | | | | | - Sergei Glavatskih
- Department of Electrical Energy, Metals, Mechanical Constructions and Systems , Ghent University , B-9000 , Ghent , Belgium
| | | | - Rob Atkin
- School of Molecular Sciences , University of Western Australia , 6009 Perth , Australia
| | | | - Mark W Rutland
- Surfaces, Processes and Formulation , RISE Research Institutes of Sweden , SE-50115 Stockholm , Sweden
| |
Collapse
|
6
|
Abellán-Flos M, Timmer BJJ, Altun S, Aastrup T, Vincent SP, Ramström O. QCM sensing of multivalent interactions between lectins and well-defined glycosylated nanoplatforms. Biosens Bioelectron 2019; 139:111328. [PMID: 31136921 DOI: 10.1016/j.bios.2019.111328] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 04/29/2019] [Accepted: 05/14/2019] [Indexed: 12/29/2022]
Abstract
Quartz crystal microbalance (QCM) methodology has been adopted to unravel important factors contributing to the "cluster glycoside effect" observed in carbohydrate-lectin interactions. Well-defined, glycosylated nanostructures of precise sizes, geometries and functionalization patterns were designed and synthesized, and applied to analysis of the interaction kinetics and thermodynamics with immobilized lectins. The nanostructures were based on Borromean rings, dodecaamine cages, and fullerenes, each of which carrying a defined number of carbohydrate ligands at precise locations. The synthesis of the Borromeates and dodecaamine cages was easily adjustable due to the modular assembly of the structures, resulting in variations in presentation mode. The binding properties of the glycosylated nanoplatforms were evaluated using flow-through QCM technology, as well as hemagglutination inhibition assays, and compared with dodecaglycosylated fullerenes and a monovalent reference. With the QCM setup, the association and dissociation rate constants and the associated equilibrium constants of the interactions could be estimated, and the results used to delineate the multivalency effects of the lectin-nanostructure interactions.
Collapse
Affiliation(s)
- Marta Abellán-Flos
- University of Namur, Départment de Chimie, Laboratoire de Chimie Bio-Organique, rue de Bruxelles 61, B-5000, Namur, Belgium
| | - Brian J J Timmer
- KTH - Royal Institute of Technology, Department of Chemistry, Teknikringen 36, S-100 44, Stockholm, Sweden
| | - Samuel Altun
- Attana AB, Björnnäsvägen 21, SE-114, 19 Stockholm, Sweden
| | - Teodor Aastrup
- Attana AB, Björnnäsvägen 21, SE-114, 19 Stockholm, Sweden.
| | - Stéphane P Vincent
- University of Namur, Départment de Chimie, Laboratoire de Chimie Bio-Organique, rue de Bruxelles 61, B-5000, Namur, Belgium.
| | - Olof Ramström
- KTH - Royal Institute of Technology, Department of Chemistry, Teknikringen 36, S-100 44, Stockholm, Sweden; University of Massachusetts Lowell, Department of Chemistry, One University Ave., Lowell, MA, 01854, USA; Linnaeus University, Department of Chemical and Biomedical Sciences, SE-39182, Kalmar, Sweden.
| |
Collapse
|
7
|
Shang K, Song S, Cheng Y, Guo L, Pei Y, Lv X, Aastrup T, Pei Z. Fabrication of Carbohydrate Chips Based on Polydopamine for Real-Time Determination of Carbohydrate⁻Lectin Interactions by QCM Biosensor. Polymers (Basel) 2018; 10:E1275. [PMID: 30961200 PMCID: PMC6401853 DOI: 10.3390/polym10111275] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 11/08/2018] [Accepted: 11/12/2018] [Indexed: 11/16/2022] Open
Abstract
A novel approach for preparing carbohydrate chips based on polydopamine (PDA) surface to study carbohydrate⁻lectin interactions by quartz crystal microbalance (QCM) biosensor instrument has been developed. The amino-carbohydrates were immobilized on PDA-coated quartz crystals via Schiff base reaction and/or Michael addition reaction. The resulting carbohydrate-chips were applied to QCM biosensor instrument with flow-through system for real-time detection of lectin⁻carbohydrate interactions. A series of plant lectins, including wheat germ agglutinin (WGA), concanavalin A (Con A), Ulex europaeus agglutinin I (UEA-I), soybean agglutinin (SBA), and peanut agglutinin (PNA), were evaluated for the binding to different kinds of carbohydrate chips. Clearly, the results show that the predicted lectin selectively binds to the carbohydrates, which demonstrates the applicability of the approach. Furthermore, the kinetics of the interactions between Con A and mannose, WGA and N-Acetylglucosamine were studied, respectively. This study provides an efficient approach to preparing carbohydrate chips based on PDA for the lectin⁻carbohydrate interactions study.
Collapse
Affiliation(s)
- Kun Shang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
| | - Siyu Song
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
| | - Yaping Cheng
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
| | - Lili Guo
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
| | - Yuxin Pei
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
| | - Xiaomeng Lv
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
| | | | - Zhichao Pei
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
| |
Collapse
|
8
|
Forssén P, Multia E, Samuelsson J, Andersson M, Aastrup T, Altun S, Wallinder D, Wallbing L, Liangsupree T, Riekkola ML, Fornstedt T. Reliable Strategy for Analysis of Complex Biosensor Data. Anal Chem 2018; 90:5366-5374. [PMID: 29589451 PMCID: PMC6150654 DOI: 10.1021/acs.analchem.8b00504] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
![]()
When
using biosensors, analyte biomolecules of several different
concentrations are percolated over a chip with immobilized ligand
molecules that form complexes with analytes. However, in many cases
of biological interest, e.g., in antibody interactions, complex formation
steady-state is not reached. The data measured are so-called sensorgram,
one for each analyte concentration, with total complex concentration
vs time. Here we present a new four-step strategy for more reliable
processing of this complex kinetic binding data and compare it with
the standard global fitting procedure. In our strategy, we first calculate
a dissociation graph to reveal if there are any heterogeneous interactions.
Thereafter, a new numerical algorithm, AIDA, is used to get the number
of different complex formation reactions for each analyte concentration
level. This information is then used to estimate the corresponding
complex formation rate constants by fitting to the measured sensorgram
one by one. Finally, all estimated rate constants are plotted and
clustered, where each cluster represents a complex formation. Synthetic
and experimental data obtained from three different QCM biosensor
experimental systems having fast (close to steady-state), moderate,
and slow kinetics (far from steady-state) were evaluated using the
four-step strategy and standard global fitting. The new strategy allowed
us to more reliably estimate the number of different complex formations,
especially for cases of complex and slow dissociation kinetics. Moreover,
the new strategy proved to be more robust as it enables one to handle
system drift, i.e., data from biosensor chips that deteriorate over
time.
Collapse
Affiliation(s)
- Patrik Forssén
- Department of Engineering and Chemical Sciences , Karlstad University , SE-651 88 Karlstad , Sweden
| | - Evgen Multia
- Department of Chemistry , P.O. Box 55, FI-00014 University of Helsinki , Finland
| | - Jörgen Samuelsson
- Department of Engineering and Chemical Sciences , Karlstad University , SE-651 88 Karlstad , Sweden
| | - Marie Andersson
- Department of Engineering and Chemical Sciences , Karlstad University , SE-651 88 Karlstad , Sweden
| | - Teodor Aastrup
- Attana AB , Björnäsvägen 21 , SE-114 19 Stockholm , Sweden
| | - Samuel Altun
- Attana AB , Björnäsvägen 21 , SE-114 19 Stockholm , Sweden
| | | | - Linus Wallbing
- Attana AB , Björnäsvägen 21 , SE-114 19 Stockholm , Sweden
| | | | - Marja-Liisa Riekkola
- Department of Chemistry , P.O. Box 55, FI-00014 University of Helsinki , Finland
| | - Torgny Fornstedt
- Department of Engineering and Chemical Sciences , Karlstad University , SE-651 88 Karlstad , Sweden
| |
Collapse
|
9
|
Gianneli M, Polo E, Lopez H, Castagnola V, Aastrup T, Dawson KA. Label-free in-flow detection of receptor recognition motifs on the biomolecular corona of nanoparticles. Nanoscale 2018; 10:5474-5481. [PMID: 29511756 DOI: 10.1039/c7nr07887k] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nanomedicine, nanotargeting and nanotherapeutics have in the last few years faced several difficulties in translating the promising results obtained in vitro to an in vivo scenario. The origin of this discrepancy might be found in the lack of a detailed and realistic characterization of the biological surface of nanoparticles. Despite the capability to engineer nanomaterials with a great variety and a precise control of the surface functionalization, the targeting capability is lost when the nanoparticles are embedded in complex biological media, due to the formation of a biological layer (biomolecular corona). This biological layer represents the ultimate nanoparticle surface, likely to interact with the cell machinery. Therefore, in addition to traditional nanoparticle characterization techniques, a more insightful investigation of the biomolecular corona is needed, including the capability to assess the orientation and functionality of specific key molecular features. Here we present a method for the rapid screening of exposed protein recognition motifs on the surface of nanoparticles exploiting quartz crystal microbalance (QCM). We quantify accessible functional epitopes of transferrin-coated nanoparticles and correlate them to differences in nanoparticle size and functionalization. The target recognition occurs label free in flow, thereby pushing our investigation into a more in vivo-like scenario. Our method is applicable to a wide array of nanoparticles and therefore holds the potential to become an advanced technique for the classification of all kinds of nanobioconstructs based on their biological external functionality.
Collapse
Affiliation(s)
- M Gianneli
- Attana AB, Greta Arwidssons Väg 21, SE-11419 Stockholm, Sweden
| | - E Polo
- Centre for BioNano Interactions, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Dublin, Ireland.
| | - H Lopez
- Centre for BioNano Interactions, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Dublin, Ireland.
| | - V Castagnola
- Centre for BioNano Interactions, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Dublin, Ireland.
| | - T Aastrup
- Attana AB, Greta Arwidssons Väg 21, SE-11419 Stockholm, Sweden
| | - K A Dawson
- Centre for BioNano Interactions, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Dublin, Ireland.
| |
Collapse
|
10
|
Timmer BJJ, Flos MA, Jørgensen LM, Proverbio D, Altun S, Ramström O, Aastrup T, Vincent SP. Spatially well-defined carbohydrate nanoplatforms: synthesis, characterization and lectin interaction study. Chem Commun (Camb) 2018; 52:12326-12329. [PMID: 27711353 DOI: 10.1039/c6cc06737a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Two novel dodecasubstituted carbohydrate nanoplatforms based on molecular Borromean rings and dodecaamine cages have been prepared for use in evaluating the importance of the spatial distribution of carbohydrates in their interaction with lectins. The binding affinities of the glyconanoplatforms were characterized using quartz crystal microbalance technology and compared with a monovalent reference and dodecaglycosylated fullerenes.
Collapse
Affiliation(s)
- B J J Timmer
- KTH - Royal Institute of Technology, Department of Chemistry, Organic Chemistry, Teknikringen 36, S-100 44 Stockholm, Sweden.
| | - M Abellán Flos
- University of Namur, Départment de Chimie, Laboratoire de Chimie Bio-Organique, Rue de Bruxelles 61, B-5000 Namur, Belgium.
| | | | - D Proverbio
- Attana AB, Björnnäsvägen 21, SE-114 19 Stockholm, Sweden.
| | - S Altun
- Attana AB, Björnnäsvägen 21, SE-114 19 Stockholm, Sweden.
| | - O Ramström
- KTH - Royal Institute of Technology, Department of Chemistry, Organic Chemistry, Teknikringen 36, S-100 44 Stockholm, Sweden.
| | - T Aastrup
- Attana AB, Björnnäsvägen 21, SE-114 19 Stockholm, Sweden.
| | - S P Vincent
- University of Namur, Départment de Chimie, Laboratoire de Chimie Bio-Organique, Rue de Bruxelles 61, B-5000 Namur, Belgium.
| |
Collapse
|
11
|
Peiris D, Aastrup T, Altun S, Käck C, Gianneli M, Proverbio D, Jørgensen LM. Label-Free Cell-Based Assay for Characterization of Biomolecules and Receptors. Methods Mol Biol 2018; 1785:53-63. [PMID: 29714011 DOI: 10.1007/978-1-4939-7841-0_4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We present a method to study the interaction between biomolecules and receptors present on the cell surface. This enables studies of molecular interactions in a natural biological context. As the analyte interacts with the receptors still intact on the cell surface, the experimental data provides complete dynamics and complexity of the interaction, thereby generating highly informative data. Attana's cell-based biosensor platform can be used to obtain this information from a diverse range of interactions as described in these protocols, which detail how to grow or capture cells on a surface, how to stabilize and visualize the cells on the surface, and how to set up assays to measure detailed interaction kinetics directly on the cell surface.
Collapse
|
12
|
Norberg O, Wu B, Thota N, Ge JT, Fauquet G, Saur AK, Aastrup T, Dong H, Yan M, Ramström O. Synthesis and binding affinity analysis of α1-2- and α1-6- O / S -linked dimannosides for the elucidation of sulfur in glycosidic bonds using quartz crystal microbalance sensors. Carbohydr Res 2017; 452:35-42. [DOI: 10.1016/j.carres.2017.09.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 09/26/2017] [Accepted: 09/30/2017] [Indexed: 01/05/2023]
|
13
|
Song S, Lu Y, Li X, Cao S, Pei Y, Aastrup T, Pei Z. Optimization of 3D Surfaces of Dextran with Different Molecule Weights for Real-Time Detection of Biomolecular Interactions by a QCM Biosensor. Polymers (Basel) 2017; 9:E409. [PMID: 30965713 PMCID: PMC6418631 DOI: 10.3390/polym9090409] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 08/25/2017] [Accepted: 08/29/2017] [Indexed: 02/05/2023] Open
Abstract
Quartz crystal microbalance (QCM) has been extensively applied in real-time and label-free biomolecular interaction studies. However, the sensitive detection by QCM technology remains challenging, mainly due to the limited surface immobilization capacity. Here, a three-dimensional (3D) carboxymethyl dextran coated gold sensor chip surface was successfully fabricated with dextran of different molecular weight (100, 500 and 2000 kDa, respectively). To evaluate the 3D carboxymethyl dextran surface immobilization capacity, the 3D surface was used for studying antigen⁻antibody interactions on the QCM biosensor. The results showed that the protein immobilization capacity of the 3D carboxymethyl dextran (2000 kDa) surface exceeded more than 4 times the capacity of the 2D carboxyl surface, and 2 times the capacity of the traditional 3D carboxymethyl dextran (500 kDa) surface. Furthermore, the kinetic and affinity properties of antigen⁻antibody interactions were performed. Most notably, the optimized 3D carboxymethyl dextran (2000 kDa) surface could be used for small molecule detection, where the binding of biotinylated oligo (0.67 kDa) reached 8.1 Hz. The results confirmed that a 3D carboxymethyl dextran (2000 kDa) surface can be exploited for sensitive detection of low molecular weight analytes, which have great potential applications for characterizing the interactions between small molecule drugs and proteins.
Collapse
Affiliation(s)
- Siyu Song
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
| | - Yuchao Lu
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
| | - Xueming Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
| | - Shoupeng Cao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
| | - Yuxin Pei
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
| | | | - Zhichao Pei
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
| |
Collapse
|
14
|
Kalograiaki I, Campanero-Rhodes MA, Proverbio D, Euba B, Garmendia J, Aastrup T, Solís D. Bacterial Surface Glycans: Microarray and QCM Strategies for Glycophenotyping and Exploration of Recognition by Host Receptors. Methods Enzymol 2017; 598:37-70. [PMID: 29306443 DOI: 10.1016/bs.mie.2017.06.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Bacterial surfaces are decorated with a diversity of carbohydrate structures that play important roles in the bacteria-host relationships. They may offer protection against host defense mechanisms, elicit strong antigenic responses, or serve as ligands for host receptors, including lectins of the innate immune system. Binding by these lectins may trigger defense responses or, alternatively, promote attachment, thereby enhancing infection. The outcome will depend on the particular bacterial surface landscape, which may substantially differ among species and strains. In this chapter, we describe two novel methods for exploring interactions directly on the bacterial surface, based on the generation of bacterial microarrays and quartz crystal microbalance (QCM) sensor chips. Bacterial microarrays enable profiling of accessible carbohydrate structures and screening of their recognition by host receptors, also providing information on binding avidity, while the QCM approach allows determination of binding affinity and kinetics. In both cases, the chief element is the use of entire bacterial cells, so that recognition of the bacterial glycan epitopes is explored in their natural environment.
Collapse
Affiliation(s)
- Ioanna Kalograiaki
- Instituto de Química Física Rocasolano, CSIC, Madrid, Spain; CIBER de Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - María A Campanero-Rhodes
- Instituto de Química Física Rocasolano, CSIC, Madrid, Spain; CIBER de Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | | | - Begoña Euba
- CIBER de Enfermedades Respiratorias (CIBERES), Madrid, Spain; Instituto de Agrobiotecnología, CSIC-UPNa-Gobierno Navarra, Mutilva, Spain
| | - Junkal Garmendia
- CIBER de Enfermedades Respiratorias (CIBERES), Madrid, Spain; Instituto de Agrobiotecnología, CSIC-UPNa-Gobierno Navarra, Mutilva, Spain
| | | | - Dolores Solís
- Instituto de Química Física Rocasolano, CSIC, Madrid, Spain; CIBER de Enfermedades Respiratorias (CIBERES), Madrid, Spain.
| |
Collapse
|
15
|
Gianneli M, Yan Y, Polo E, Peiris D, Aastrup T, Dawson K. Novel QCM-based Method to Predict in Vivo Behaviour of Nanoparticles. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.protcy.2017.04.084] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
16
|
Kalograiaki I, Euba B, Proverbio D, Campanero-Rhodes MA, Aastrup T, Garmendia J, Solís D. Combined Bacteria Microarray and Quartz Crystal Microbalance Approach for Exploring Glycosignatures of Nontypeable Haemophilus influenzae and Recognition by Host Lectins. Anal Chem 2016; 88:5950-7. [PMID: 27176788 DOI: 10.1021/acs.analchem.6b00905] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Recognition of bacterial surface epitopes by host receptors plays an important role in the infectious process and is intimately associated with bacterial virulence. Delineation of bacteria-host interactions commonly relies on the detection of binding events between purified bacteria- and host-target molecules. In this work, we describe a combined microarray and quartz crystal microbalance (QCM) approach for the analysis of carbohydrate-mediated interactions directly on the bacterial surface, thus preserving the native environment of the bacterial targets. Nontypeable Haemophilus influenzae (NTHi) was selected as a model pathogenic species not displaying a polysaccharide capsule or O-antigen-containing lipopolysaccharide, a trait commonly found in several important respiratory pathogens. Here, we demonstrate the usefulness of NTHi microarrays for exploring the presence of carbohydrate structures on the bacterial surface. Furthermore, the microarray approach is shown to be efficient for detecting strain-selective binding of three innate immune lectins, namely, surfactant protein D, human galectin-8, and Siglec-14, to different NTHi clinical isolates. In parallel, QCM bacteria-chips were developed for the analysis of lectin-binding kinetics and affinity. This novel QCM approach involves capture of NTHi on lectin-derivatized chips followed by formaldehyde fixation, rendering the bacteria an integrated part of the sensor chip, and subsequent binding assays with label-free lectins. The binding parameters obtained for selected NTHi-lectin pairs provide further insights into the interactions occurring at the bacterial surface.
Collapse
Affiliation(s)
- Ioanna Kalograiaki
- Instituto de Química Física Rocasolano, CSIC , Serrano 119, 28006 Madrid, Spain.,CIBER de Enfermedades Respiratorias (CIBERES) , Avda Monforte de Lemos 3-5, 28029 Madrid, Spain
| | - Begoña Euba
- CIBER de Enfermedades Respiratorias (CIBERES) , Avda Monforte de Lemos 3-5, 28029 Madrid, Spain.,Instituto de Agrobiotecnología , CSIC-UPNa-Gobierno Navarra, Avda Pamplona 123, 31192 Mutilva, Spain
| | | | - María A Campanero-Rhodes
- Instituto de Química Física Rocasolano, CSIC , Serrano 119, 28006 Madrid, Spain.,CIBER de Enfermedades Respiratorias (CIBERES) , Avda Monforte de Lemos 3-5, 28029 Madrid, Spain
| | | | - Junkal Garmendia
- CIBER de Enfermedades Respiratorias (CIBERES) , Avda Monforte de Lemos 3-5, 28029 Madrid, Spain.,Instituto de Agrobiotecnología , CSIC-UPNa-Gobierno Navarra, Avda Pamplona 123, 31192 Mutilva, Spain
| | - Dolores Solís
- Instituto de Química Física Rocasolano, CSIC , Serrano 119, 28006 Madrid, Spain.,CIBER de Enfermedades Respiratorias (CIBERES) , Avda Monforte de Lemos 3-5, 28029 Madrid, Spain
| |
Collapse
|
17
|
Dunér G, Anderson H, Pei Z, Ingemarsson B, Aastrup T, Ramström O. Signal enhancement in ligand–receptor interactions using dynamic polymers at quartz crystal microbalance sensors. Analyst 2016; 141:3993-6. [DOI: 10.1039/c6an00735j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The signal enhancement properties of QCM sensors based on dynamic, biotinylated poly(acrylic acid) brushes has been studied in interaction studies with an anti-biotin Fab fragment.
Collapse
Affiliation(s)
- Gunnar Dunér
- KTH – Royal Institute of Technology
- Department of Chemistry
- S-10044 Stockholm
- Sweden
- Attana AB
| | - Henrik Anderson
- Attana AB
- S-11419 Stockholm
- Sweden
- Uppsala University
- Ångström Laboratory
| | | | | | | | - Olof Ramström
- KTH – Royal Institute of Technology
- Department of Chemistry
- S-10044 Stockholm
- Sweden
| |
Collapse
|
18
|
Hjalmarsson N, Wallinder D, Glavatskih S, Atkin R, Aastrup T, Rutland MW. Weighing the surface charge of an ionic liquid. Nanoscale 2015; 7:16039-16045. [PMID: 26370450 DOI: 10.1039/c5nr03965g] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Electrochemical quartz crystal microbalance has been used to measure changes in the composition of the capacitive electrical double layer for 1-ethyl-3-methylimidazolium tris(pentafluoroethyl)-trifluorophosphate, an ionic liquid, in contact with a gold electrode surface as a function of potential. The mass difference between the cation and anion means that the technique can effectively "weigh" the surface charge accurately with high temporal resolution. This reveals quantitatively how changing the potential alters the ratio of cations and anions associated with the electrode surface, and thus the charge per unit area, as well as the kinetics associated with these interfacial processes. The measurements reveal that it is diffusion of co-ions into the interfacial region rather than expulsion of counterions that controls the relaxation. The measured potential dependent double layer capacitance experimentally validates recent theoretical predictions for counterion overscreening (low potentials) and crowding (high potentials) at electrode surfaces. This new capacity to quantitatively measure ion composition is critical for ionic liquid applications ranging from batteries, capacitors and electrodeposition through to boundary layer structure in tribology, and more broadly provides new insight into interfacial processes in concentrated electrolyte solutions.
Collapse
Affiliation(s)
- Nicklas Hjalmarsson
- Surface and Corrosion Science, KTH Royal Institute of Technology, SE-10044 Stockholm, Sweden
| | | | | | | | | | | |
Collapse
|
19
|
Elmlund L, Suriyanarayanan S, Wiklander JG, Aastrup T, Nicholls IA. Biotin selective polymer nano-films. J Nanobiotechnology 2014; 12:8. [PMID: 24655809 PMCID: PMC3994413 DOI: 10.1186/1477-3155-12-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 03/14/2014] [Indexed: 11/17/2022] Open
Abstract
Background The interaction between biotin and avidin is utilized in a wide range of assay and diagnostic systems. A robust material capable of binding biotin should offer scope in the development of reusable assay materials and biosensor recognition elements. Results Biotin-selective thin (3–5 nm) films have been fabricated on hexadecanethiol self assembled monolayer (SAM) coated Au/quartz resonators. The films were prepared based upon a molecular imprinting strategy where N,N'-methylenebisacrylamide and 2-acrylamido-2-methylpropanesulfonic acid were copolymerized and grafted to the SAM-coated surface in the presence of biotin methyl ester using photoinitiation with physisorbed benzophenone. The biotinyl moiety selectivity of the resonators efficiently differentiated biotinylated peptidic or carbohydrate structures from their native counterparts. Conclusions Molecularly imprinted ultra thin films can be used for the selective recognition of biotinylated structures in a quartz crystal microbalance sensing platform. These films are stable for periods of at least a month. This strategy should prove of interest for use in other sensing and assay systems.
Collapse
Affiliation(s)
| | | | | | | | - Ian A Nicholls
- Bioorganic & Biophysical Chemistry Laboratory, Centre for Biomaterials Chemistry, Linnæus University, Kalmar SE-391 82, Sweden.
| |
Collapse
|
20
|
Suriyanarayanan S, Lee HH, Liedberg B, Aastrup T, Nicholls IA. Protein-resistant hyperbranched polyethyleneimine brush surfaces. J Colloid Interface Sci 2013; 396:307-15. [DOI: 10.1016/j.jcis.2012.12.076] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Revised: 12/26/2012] [Accepted: 12/28/2012] [Indexed: 12/17/2022]
|
21
|
Li X, Pei Y, Zhang R, Shuai Q, Wang F, Aastrup T, Pei Z. A suspension-cell biosensor for real-time determination of binding kinetics of protein–carbohydrate interactions on cancer cell surfaces. Chem Commun (Camb) 2013; 49:9908-10. [DOI: 10.1039/c3cc45006f] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
22
|
Pei Z, Saint-Guirons J, Käck C, Ingemarsson B, Aastrup T. Real-time analysis of the carbohydrates on cell surfaces using a QCM biosensor: a lectin-based approach. Biosens Bioelectron 2012; 35:200-205. [DOI: 10.1016/j.bios.2012.02.047] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Revised: 02/19/2012] [Accepted: 02/20/2012] [Indexed: 11/30/2022]
|
23
|
Norberg O, Lee IH, Aastrup T, Yan M, Ramström O. Photogenerated lectin sensors produced by thiol-ene/yne photo-click chemistry in aqueous solution. Biosens Bioelectron 2012; 34:51-6. [PMID: 22341757 DOI: 10.1016/j.bios.2012.01.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Accepted: 01/05/2012] [Indexed: 12/16/2022]
Abstract
The photoinitiated radical reactions between thiols and alkenes/alkynes (thiol-ene and thiol-yne chemistry) have been applied to a functionalization methodology to produce carbohydrate-presenting surfaces for analyses of biomolecular interactions. Polymer-coated quartz surfaces were functionalized with alkenes or alkynes in a straightforward photochemical procedure utilizing perfluorophenylazide (PFPA) chemistry. The alkene/alkyne surfaces were subsequently allowed to react with carbohydrate thiols in water under UV-irradiation. The reaction can be carried out in a drop of water directly on the surface without photoinitiator, and any disulfide side products were easily washed away after the functionalization process. The resulting carbohydrate-presenting surfaces were evaluated in real-time studies of protein-carbohydrate interactions using a quartz crystal microbalance (QCM) flow-through system with recurring injections of selected lectins, with intermediate regeneration steps using low pH buffer. The resulting methodology proved fast, efficient and scalable to high-throughput analysis formats, and the produced surfaces showed significant protein binding with expected selectivities of the lectins used in the study.
Collapse
Affiliation(s)
- Oscar Norberg
- KTH Royal Institute of Technology, Department of Chemistry, Stockholm, Sweden
| | | | | | | | | |
Collapse
|
24
|
Norberg O, Deng L, Aastrup T, Yan M, Ramström O. Photo-click immobilization on quartz crystal microbalance sensors for selective carbohydrate-protein interaction analyses. Anal Chem 2011; 83:1000-7. [PMID: 21162569 PMCID: PMC3059333 DOI: 10.1021/ac102781u] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A photoclick method based on azide photoligation and Cu-catalyzed azide-alkyne cycloaddition has been evaluated for the immobilization of carbohydrates to polymeric materials. The biomolecular recognition properties of the materials have been investigated with regard to applicable polymeric substrates and selectivity of protein binding. The method was used to functionalize a range of polymeric surfaces (polystyrene, polyacrylamide, poly(ethylene glycol), poly(2-ethyl-2-oxazoline), and polypropene) with various carbohydrate structures (based on α-D-mannose, β-D-galactose, and N-acetyl-β-D-glucosamine). The functionalized surfaces were evaluated in real-time studies of protein-carbohydrate interactions using a quartz crystal microbalance flow-through system with a series of different carbohydrate-binding proteins (lectins). The method proved to be robust and versatile, resulting in a range of efficient sensors showing high and predictable protein selectivities.
Collapse
Affiliation(s)
- Oscar Norberg
- Department of Chemistry, KTH - Royal Institute of Technology, Teknikringen 30, S-10044, Stockholm, Sweden
- Attana AB, Björnnäsvägen 21, S-11347, Stockholm, Sweden
| | - Lingquan Deng
- Department of Chemistry, KTH - Royal Institute of Technology, Teknikringen 30, S-10044, Stockholm, Sweden
| | | | - Mingdi Yan
- Department of Chemistry, Portland State University, P.O. Box 751, Portland, Oregon 97207-0751
| | - Olof Ramström
- Department of Chemistry, KTH - Royal Institute of Technology, Teknikringen 30, S-10044, Stockholm, Sweden
| |
Collapse
|
25
|
Myrskog A, Anderson H, Aastrup T, Ingemarsson B, Liedberg B. Esterification of self-assembled carboxylic-acid-terminated thiol monolayers in acid environment: a time-dependent study. Langmuir 2010; 26:821-829. [PMID: 19831382 DOI: 10.1021/la902255j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
This contribution reports on the influence of acids on the quality of carboxylic-acid-terminated self-assembled monolayers (SAMs) on gold prepared from ethanolic solution of HS-(CH(2))(15)-COOH and HS-(CH(2))(11)CONH-(EG)(6)CH(2)-COOH. Null ellipsometry, contact angle goniometry, and infrared reflection-absorption spectroscopy are used to monitor the physical and chemical changes occurring within the SAMs upon acid post treatment; after incubation with acids present in the solution; and after incubation in aged acid containing solutions. The presence of acid has a positive effect on the crystallinity, packing, and orientation of the supporting alkyl and ethylene glycol subunits of the SAM. Our studies also confirm previous findings stating that the carboxylic groups are rapidly converted into ethyl ester groups in the presence of hydrochloric acid in the incubation solution. It is also evident that the conversion occurs in the presence of the weaker acid, acetic acid, although at a much slower rate than that for hydrochloric acid. This is a new observation that has not been reported on before. The physical and chemical characterization is also complemented with a functional bioaffinity study. The functional evaluation revealed that the present model system was surprisingly insensitive to the degree of esterification of the carboxylic acid groups, but that 4 weeks of storage of the two investigated thiols in hydrochloric acid containing ethanol resulted in SAMs that were completely inactive with respect to immobilization and subsequent binding of the antigen. It was encouraging to note that the nonspecific binding of both antigen and antibody was extremely low on the two SAMs, regardless of the relative amount of ethyl esters on the surface.
Collapse
Affiliation(s)
- Annica Myrskog
- Division of Sensor Science and Molecular Physics, Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden
| | | | | | | | | |
Collapse
|
26
|
|
27
|
Mahon E, Aastrup T, Barboiu M. Dynamic glycovesicle systems for amplified QCM detection of carbohydrate-lectin multivalent biorecognition. Chem Commun (Camb) 2010; 46:2441-3. [DOI: 10.1039/b924766a] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
28
|
Dunér G, Anderson H, Myrskog A, Hedlund M, Aastrup T, Ramström O. Surface-confined photopolymerization of pH-responsive acrylamide/acrylate brushes on polymer thin films. Langmuir 2008; 24:7559-7564. [PMID: 18563922 DOI: 10.1021/la800700h] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Dynamic acrylamide/acrylate polymeric brushes were synthesized at gold-plated quartz crystal surfaces. The crystals were initially coated with polystyrene-type thin films, derivatized with photolabile iniferter groups, and subsequently subjected to photoinitiated polymerization in acrylamide/acrylate monomer feeds. This surface-confined polymerization method enabled direct photocontrol over the polymerization, as followed by increased frequency responses of the crystal oscillations in a quartz crystal microbalance (QCM). The produced polymer layers were also found to be highly sensitive to external acid/base stimuli. Large oscillation frequency shifts were detected when the brushes were exposed to buffer solutions of different pH. The dynamic behavior of the resulting polymeric brushes was evaluated, and the extent of expansion and contraction of the films was monitored by the QCM setup in situ in real time. The resulting responses were rapid, and the effects were fully reversible. Low pH resulted in full contractions of the films, whereas higher pH yielded maximal expansion in order to minimize repulsion around the charged acrylate centers. The surfaces also proved to be very robust because the responsiveness was reproducible over many cycles of repeated expansion and contraction. Using ellipsometry, copolymer layers were estimated to be approximately 220 nm in a collapsed state and approximately 340 nm in the expanded state, effectively increasing the thickness of the film by 55%.
Collapse
Affiliation(s)
- Gunnar Dunér
- Royal Institute of Technology, Department of Chemistry, Teknikringen 30, S-10044 Stockholm, Sweden
| | | | | | | | | | | |
Collapse
|
29
|
Albet-Torres N, O'Mahony J, Charlton C, Balaz M, Lisboa P, Aastrup T, Månsson A, Nicholls IA. Mode of heavy meromyosin adsorption and motor function correlated with surface hydrophobicity and charge. Langmuir 2007; 23:11147-56. [PMID: 17696458 DOI: 10.1021/la7008682] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The in vitro motility assay is valuable for fundamental studies of actomyosin function and has recently been combined with nanostructuring techniques for the development of nanotechnological applications. However, the limited understanding of the interaction mechanisms between myosin motor fragments (heavy meromyosin, HMM) and artificial surfaces hampers the development as well as the interpretation of fundamental studies. Here we elucidate the HMM-surface interaction mechanisms for a range of negatively charged surfaces (silanized glass and SiO2), which is relevant both to nanotechnology and fundamental studies. The results show that the HMM-propelled actin filament sliding speed (after a single injection of HMM, 120 microg/mL) increased with the contact angle of the surfaces (in the range of 20-80 degrees). However, quartz crystal microbalance (QCM) studies suggested a reduction in the adsorption of HMM (with coupled water) under these conditions. This result and actin filament binding data, together with previous measurements of the HMM density (Sundberg, M.; Balaz, M.; Bunk, R.; Rosengren-Holmberg, J. P.; Montelius, L.; Nicholls, I. A.; Omling, P.; Tågerud, S.; Månsson, A. Langmuir 2006, 22, 7302-7312. Balaz, M.; Sundberg, M.; Persson, M.; Kvassman, J.; Månsson, A. Biochemistry 2007, 46, 7233-7251), are consistent with (1) an HMM monolayer and (2) different HMM configurations at different contact angles of the surface. More specifically, the QCM and in vitro motility assay data are consistent with a model where the molecules are adsorbed either via their flexible C-terminal tail part (HMMC) or via their positively charged N-terminal motor domain (HMMN) without other surface contact points. Measurements of zeta potentials suggest that an increased contact angle is correlated with a reduced negative charge of the surfaces. As a consequence, the HMMC configuration would be the dominant configuration at high contact angles but would be supplemented with electrostatically adsorbed HMM molecules (HMMN configuration) at low contact angles. This would explain the higher initial HMM adsorption (from probability arguments) under the latter conditions. Furthermore, because the HMMN mode would have no actin binding it would also account for the lower sliding velocity at low contact angles. The results are compared to previous studies of the microtubule-kinesin system and are also discussed in relation to fundamental studies of actomyosin and nanotechnological developments and applications.
Collapse
Affiliation(s)
- Nuria Albet-Torres
- Department of Chemistry and Biomedical Sciences, University of Kalmar, SE-391 82 Kalmar, Sweden
| | | | | | | | | | | | | | | |
Collapse
|
30
|
Forsberg J, Duda LC, Olsson A, Schmitt T, Andersson J, Nordgren J, Hedberg J, Leygraf C, Aastrup T, Wallinder D, Guo JH. System for in situ studies of atmospheric corrosion of metal films using soft x-ray spectroscopy and quartz crystal microbalance. Rev Sci Instrum 2007; 78:083110. [PMID: 17764316 DOI: 10.1063/1.2777391] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
We present a versatile chamber ("atmospheric corrosion cell") for soft x-ray absorption/emission spectroscopy of metal surfaces in a corrosive atmosphere allowing novel in situ electronic structure studies. Synchrotron x rays passing through a thin window separating the corrosion cell interior from a beamline vacuum chamber probe a metal film deposited on a quartz crystal microbalance (QCM) or on the inside of the window. We present some initial results on chloride induced corrosion of iron surfaces in humidified synthetic air. By simultaneous recording of QCM signal and soft x-ray emission from the corroding sample, correlation between mass changes and variations in spectral features is facilitated.
Collapse
Affiliation(s)
- J Forsberg
- Department of Physics, Uppsala University, Uppsala, Sweden.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Pei Z, Larsson R, Aastrup T, Anderson H, Lehn JM, Ramström O. Quartz crystal microbalance bioaffinity sensor for rapid identification of glycosyldisulfide lectin inhibitors from a dynamic combinatorial library. Biosens Bioelectron 2006; 22:42-8. [PMID: 16406568 DOI: 10.1016/j.bios.2005.11.024] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2005] [Revised: 11/24/2005] [Accepted: 11/28/2005] [Indexed: 11/28/2022]
Abstract
Carbohydrate-lectin interactions were probed with dynamic combinatorial libraries, using the plant lectin Concanavalin A as target species. The dynamic combinatorial libraries were generated from a pool of thiol components through reversible thiol-disulfide interchange, and screened using a simple and efficient method based on a quartz crystal microbalance setup. It was found that dimers based on 1-thio- and 6-thio-mannose analogues were the most active inhibitors. Furthermore, the results clearly show that the 6-thio-mannose possess unique characteristics compared to its oxygen-containing counterpart.
Collapse
Affiliation(s)
- Zhichao Pei
- KTH-Royal Institute of Technology, Department of Chemistry, Teknikringen 30, S-10044 Stockholm, Sweden
| | | | | | | | | | | |
Collapse
|
32
|
Melles E, Anderson H, Wallinder D, Shafqat J, Bergman T, Aastrup T, Jörnvall H. Electroimmobilization of proinsulin C-peptide to a quartz crystal microbalance sensor chip for protein affinity purification. Anal Biochem 2005; 341:89-93. [PMID: 15866532 DOI: 10.1016/j.ab.2005.03.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2005] [Indexed: 11/19/2022]
Abstract
Proinsulin C-peptide was electroimmobilized to a quartz crystal microbalance sensor chip, localizing this low-pI peptide for covalent attachment to activated surface carboxyl groups. The resulting chip was used in a continuous flow biosensor to capture anti-C-peptide antibodies, which could subsequently be eluted in 5% formic acid between air bubbles for efficient recovery and mass spectrometric identification. The method is reproducible through repeated cycles, providing affinity purification of proteins under real-time monitoring of the binding and elution processes.
Collapse
Affiliation(s)
- Ermias Melles
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | | | | | | | | | | | | |
Collapse
|
33
|
Pei Z, Aastrup T, Anderson H, Ramström O. Redox-responsive and calcium-dependent switching of glycosyldisulfide interactions with Concanavalin A. Bioorg Med Chem Lett 2005; 15:2707-10. [PMID: 15878660 DOI: 10.1016/j.bmcl.2005.04.024] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2005] [Revised: 04/11/2005] [Accepted: 04/14/2005] [Indexed: 11/17/2022]
Abstract
Glycosyldisulfides can interact efficiently with carbohydrate-binding entities. This has been shown for a range of thiosaccharide dimers when tested for their effects against the lectin Concanavalin A using a modified quartz crystal microbalance-technique. Contrary to the thiosaccharide monomers, showing no significant binding up to 10 mM, several of the dimers showed IC(50)-values in the low millimolar range. Three of the glycosyldisulfides tested also displayed very high positive apparent cooperativity effects that were found to be both calcium-dependent and redox-responsive.
Collapse
Affiliation(s)
- Zhichao Pei
- KTH-Royal Institute of Technology, Department of Chemistry, Stockholm, Sweden
| | | | | | | |
Collapse
|
34
|
Pei Z, Anderson H, Aastrup T, Ramström O. Study of real-time lectin-carbohydrate interactions on the surface of a quartz crystal microbalance. Biosens Bioelectron 2004; 21:60-6. [PMID: 15967351 DOI: 10.1016/j.bios.2004.10.006] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2004] [Revised: 10/11/2004] [Accepted: 10/11/2004] [Indexed: 11/29/2022]
Abstract
A quartz crystal microbalance (QCM) biosensor system for lectin-carbohydrate interactions has been developed. Yeast mannan was immobilised on polystyrene-coated quartz crystals, and interactions tested with the lectin concanavalin A (Con A). The biosensor could be easily operated, where mannan immobilisation and all binding analyses were performed in real-time using a flow-through system. The apparent binding constant for yeast mannan to Con A was estimated to be 0.4 microM, well in accordance to reported literature values. In addition, the effective concentration values (EC50-values) for a series of mannose/mannoside ligands, acting as competitors to the mannan/Con A interaction, were determined to range from 0.18 to 5.3 mM, in good correlation with a related enzyme-labelled lectin assay (ELLA) protocol.
Collapse
Affiliation(s)
- Zhichao Pei
- KTH-Royal Institute of Technology, Department of Chemistry, Teknikringen 30, S-10044 Stockholm, Sweden
| | | | | | | |
Collapse
|