1
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Contardi C, Rubes D, Serra M, Dorati R, Dattilo M, Mavliutova L, Patrini M, Guglielmann R, Sellergren B, De Lorenzi E. Affinity Capillary Electrophoresis as a Tool To Characterize Molecularly Imprinted Nanogels in Solution. Anal Chem 2024. [PMID: 38284411 DOI: 10.1021/acs.analchem.3c04912] [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: 01/30/2024]
Abstract
In this work, an innovative and accurate affinity capillary electrophoresis (ACE) method was set up to monitor the complexation of aqueous MIP nanogels (NGs) with model cancer-related antigens. Using α2,6'- and α2,3'-sialyllactose as oversimplified cancer biomarker-mimicking templates, NGs were synthesized and characterized in terms of size, polydispersity, and overall charge. A stability study was also carried out in order to select the best storage conditions and to ensure product quality. After optimization of capillary electrophoresis conditions, injection of MIP NGs resulted in a single, sharp, and efficient peak. The mobility shift approach was applied to quantitatively estimate binding affinity, in this case resulting in an association constant of K ≈ 106 M-1. The optimized polymers further displayed a pronounced discrimination between the two sialylated sugars. The newly developed ACE protocol has the potential to become a very effective method for nonconstrained affinity screening of NG in solution, especially during the NG development phase and/or for a final accurate quantitation of the observed binding.
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Affiliation(s)
- Cecilia Contardi
- Department of Drug Sciences, University of Pavia, 27100 Pavia, PV, Italy
| | - Davide Rubes
- Department of Drug Sciences, University of Pavia, 27100 Pavia, PV, Italy
| | - Massimo Serra
- Department of Drug Sciences, University of Pavia, 27100 Pavia, PV, Italy
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, 27100 Pavia, PV, Italy
| | - Marco Dattilo
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, CS, Italy
| | - Liliia Mavliutova
- Biofilms Research Center for Biointerfaces, Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, 21432 Malmö, Sweden
| | | | | | - Börje Sellergren
- Biofilms Research Center for Biointerfaces, Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, 21432 Malmö, Sweden
| | - Ersilia De Lorenzi
- Department of Drug Sciences, University of Pavia, 27100 Pavia, PV, Italy
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2
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Sergeeva Y, Yeung SY, Sellergren B. Heteromultivalent Ligand Display on Reversible Self-Assembled Monolayers (rSAMs): A Fluidic Platform for Tunable Influenza Virus Recognition. ACS Appl Mater Interfaces 2024; 16:3139-3146. [PMID: 38197122 PMCID: PMC10811624 DOI: 10.1021/acsami.3c15699] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 12/18/2023] [Accepted: 12/20/2023] [Indexed: 01/11/2024]
Abstract
We report on the design of heteromultivalent influenza A virus (IAV) receptors based on reversible self-assembled monolayers (SAMs) featuring two distinct mobile ligands. The principal layer building blocks consist of α-(4-amidinophenoxy)alkanes decorated at the ω-position with sialic acid (SA) and the neuraminidase inhibitor Zanamivir (Zan), acting as two mobile ligands binding to the complementary receptors hemagglutinin (HA) and neuraminidase (NA) on the virus surface. From ternary amphiphile mixtures comprising these ligands, the amidines spontaneously self-assemble on top of carboxylic acid-terminated SAMs to form reversible mixed monolayers (rSAMs) that are easily tunable with respect to the ligand ratio. We show that this results in the ability to construct surfaces featuring a very strong affinity for the surface proteins and specific virus subtypes. Hence, an rSAM prepared from solutions containing 15% SA and 10% Zan showed an exceptionally high affinity and selectivity for the avian IAV H7N9 (Kd = 11 fM) that strongly exceeded the affinity for other subtypes (H3N2, H5N1, H1N1). Changing the SA/Zan ratio resulted in changes in the relative preference between the four tested subtypes, suggesting this to be a key parameter for rapid adjustments of both virus affinity and selectivity.
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Affiliation(s)
- Yulia Sergeeva
- Department of Biomedical
Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty
of Health and Society, Malmö University, 205 06 Malmö, Sweden
| | | | - Börje Sellergren
- Department of Biomedical
Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty
of Health and Society, Malmö University, 205 06 Malmö, Sweden
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3
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Kislenko E, İncel A, Gawlitza K, Sellergren B, Rurack K. Towards molecularly imprinted polymers that respond to and capture phosphorylated tyrosine epitopes using fluorescent bis-urea and bis-imidazolium receptors. J Mater Chem B 2023; 11:10873-10882. [PMID: 37877301 DOI: 10.1039/d3tb01474f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
Early detection of cancer is essential for successful treatment and improvement in patient prognosis. Deregulation of post-translational modifications (PTMs) of proteins, especially phosphorylation, is present in many types of cancer. Therefore, the development of materials for the rapid sensing of low abundant phosphorylated peptides in biological samples can be of great therapeutic value. In this work, we have synthesised fluorescent molecularly imprinted polymers (fMIPs) for the detection of the phosphorylated tyrosine epitope of ZAP70, a cancer biomarker. The polymers were grafted as nanometer-thin shells from functionalised submicron-sized silica particles using a reversible addition-fragmentation chain-transfer (RAFT) polymerisation. Employing the combination of fluorescent urea and intrinsically cationic bis-imidazolium receptor cross-linkers, we have developed fluorescent sensory particles, showing an imprinting factor (IF) of 5.0. The imprinted polymer can successfully distinguish between phosphorylated and non-phosphorylated tripeptides, reaching lower micromolar sensitivity in organic solvents and specifically capture unprotected peptide complements in a neutral buffer. Additionally, we have shown the importance of assessing the influence of counterions present in the MIP system on the imprinting process and final material performance. The potential drawbacks of using epitopes with protective groups, which can co-imprint with targeted functionality, are also discussed.
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Affiliation(s)
- Evgeniia Kislenko
- Chemical and Optical Sensing Division, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Str. 11, D-12489 Berlin, Germany.
| | - Anıl İncel
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, SE-20506 Malmö, Sweden
| | - Kornelia Gawlitza
- Chemical and Optical Sensing Division, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Str. 11, D-12489 Berlin, Germany.
| | - Börje Sellergren
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, SE-20506 Malmö, Sweden
| | - Knut Rurack
- Chemical and Optical Sensing Division, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Str. 11, D-12489 Berlin, Germany.
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4
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Huynh CM, Mavliutova L, Sparrman T, Sellergren B, Irgum K. Elucidation of the Binding Orientation in α2,3- and α2,6-Linked Neu5Ac-Gal Epitopes toward a Hydrophilic Molecularly Imprinted Monolith. ACS Omega 2023; 8:44238-44249. [PMID: 38027366 PMCID: PMC10666243 DOI: 10.1021/acsomega.3c06836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 10/20/2023] [Accepted: 10/23/2023] [Indexed: 12/01/2023]
Abstract
N-Acetylneuraminic acid and its α2,3/α2,6-glycosidic linkages with galactose (Neu5Ac-Gal) are major carbohydrate antigen epitopes expressed in various pathological processes, such as cancer, influenza, and SARS-CoV-2. We here report a strategy for the synthesis and binding investigation of molecularly imprinted polymers (MIPs) toward α2,3 and α2,6 conformations of Neu5Ac-Gal antigens. Hydrophilic imprinted monoliths were synthesized from melamine monomer in the presence of four different templates, namely, N-acetylneuraminic acid (Neu5Ac), N-acetylneuraminic acid methyl ester (Neu5Ac-M), 3'-sialyllactose (3SL), and 6'-sialyllactose (6SL), in a tertiary solvent mixture at temperatures varying from -20 to +80 °C. The MIPs prepared at cryotemperatures showed a preferential affinity for the α2,6 linkage sequence of 6SL, with an imprinting factor of 2.21, whereas the α2,3 linkage sequence of 3SL resulted in nonspecific binding to the polymer scaffold. The preferable affinity for the α2,6 conformation of Neu5Ac-Gal was evident also when challenged by a mixture of other mono- and disaccharides in an aqueous test mixture. The use of saturation transfer difference nuclear magnetic resonance (STD-NMR) on suspensions of crushed monoliths allowed for directional interactions between the α2,3/α2,6 linkage sequences on their corresponding MIPs to be revealed. The Neu5Ac epitope, containing acetyl and polyalcohol moieties, was the major contributor to the sequence recognition for Neu5Ac(α2,6)Gal(β1,4)Glc, whereas contributions from the Gal and Glc segments were substantially lower.
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Affiliation(s)
- Chau Minh Huynh
- Department
of Chemistry, Umeå University, S-90187 Umeå, Sweden
| | - Liliia Mavliutova
- Department
of Biomedical Sciences, Faculty of Health and Society, Malmö University, SE-20506 Malmö, Sweden
| | - Tobias Sparrman
- Department
of Chemistry, Umeå University, S-90187 Umeå, Sweden
| | - Börje Sellergren
- Department
of Biomedical Sciences, Faculty of Health and Society, Malmö University, SE-20506 Malmö, Sweden
| | - Knut Irgum
- Department
of Chemistry, Umeå University, S-90187 Umeå, Sweden
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5
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Grasso G, Sommella EM, Merciai F, Abouhany R, Shinde SA, Campiglia P, Sellergren B, Crescenzi C. Enhanced selective capture of phosphomonoester lipids enabling highly sensitive detection of sphingosine 1-phosphate. Anal Bioanal Chem 2023; 415:6573-6582. [PMID: 37736841 PMCID: PMC10567913 DOI: 10.1007/s00216-023-04937-8] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 08/09/2023] [Accepted: 08/24/2023] [Indexed: 09/23/2023]
Abstract
Sphingolipids play crucial roles in cellular membranes, myelin stability, and signalling responses to physiological cues and stress. Among them, sphingosine 1-phosphate (S1P) has been recognized as a relevant biomarker for neurodegenerative diseases, and its analogue FTY-720 has been approved by the FDA for the treatment of relapsing-remitting multiple sclerosis. Focusing on these targets, we here report three novel polymeric capture phases for the selective extraction of the natural biomarker and its analogue drug. To enhance analytical performance, we employed different synthetic approaches using a cationic monomer and a hydrophobic copolymer of styrene-DVB. Results have demonstrated high affinity of the sorbents towards S1P and fingolimod phosphate (FTY-720-P, FP). This evidence proved that lipids containing phosphate diester moiety in their structures did not constitute obstacles for the interaction of phosphate monoester lipids when loaded into an SPE cartridge. Our suggested approach offers a valuable tool for developing efficient analytical procedures.
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Affiliation(s)
- Giuliana Grasso
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, SA, Italy
- Biofilm Research Center for Biointerfaces, Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, 23014, Malmö, Sweden
| | - Eduardo M Sommella
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, SA, Italy
| | - Fabrizio Merciai
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, SA, Italy
| | - Rahma Abouhany
- Biofilm Research Center for Biointerfaces, Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, 23014, Malmö, Sweden
| | - Sudhirkumar A Shinde
- Biofilm Research Center for Biointerfaces, Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, 23014, Malmö, Sweden
- School of Consciousness, Dr. Vishwanath Karad MIT World Peace University, 411038, Pune, India
| | - Pietro Campiglia
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, SA, Italy
| | - Börje Sellergren
- Biofilm Research Center for Biointerfaces, Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, 23014, Malmö, Sweden
| | - Carlo Crescenzi
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, SA, Italy.
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6
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Hix-Janssens T, Shinde S, Abouhany R, Davies J, Neilands J, Svensäter G, Sellergren B. Microcontact-Imprinted Optical Sensors for Virulence Factors of Periodontal Disease. ACS Omega 2023; 8:15259-15265. [PMID: 37151489 PMCID: PMC10157856 DOI: 10.1021/acsomega.3c00389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 03/28/2023] [Indexed: 05/09/2023]
Abstract
Periodontitis (gum disease) is a common biofilm-mediated oral condition, with around 7% of the adult population suffering from severe disease with risk for tooth loss. Moreover, periodontitis virulence markers have been found in atherosclerotic plaque and brain tissue, suggesting a link to cardiovascular and Alzheimer's diseases. The lack of accurate, fast, and sensitive clinical methods to identify patients at risk leads, on the one hand, to patients being undiagnosed until the onset of severe disease and, on the other hand, to overtreatment of individuals with mild disease, diverting resources from those patients most in need. The periodontitis-associated bacterium, Porphyromonas gingivalis, secrete gingipains which are highly active proteases recognized as key virulence factors during disease progression. This makes them interesting candidates as predictive biomarkers, but currently, there are no methods in clinical use for monitoring them. Quantifying the levels or proteolytic activity of gingipains in the periodontal pocket surrounding the teeth could enable early-stage disease diagnosis. Here, we report on a monitoring approach based on high-affinity microcontact imprinted polymer-based receptors for the Arg and Lys specific gingipains Rgp and Kgp and their combination with surface plasmon resonance (SPR)-based biosensor technology for quantifying gingipain levels in biofluids and patient samples. Therefore, Rgp and Kgp were immobilized on glass coverslips followed by microcontact imprinting of poly-acrylamide based films anchored to gold sensor chips. The monomers selected were N-isopropyl acrylamide (NIPAM), N-hydroxyethyl acrylamide (HEAA) and N-methacryloyl-4-aminobenzamidine hydrochloride (BAM), with N,N'-methylene bis(acrylamide) (BIS) as the crosslinker. This resulted in imprinted surfaces exhibiting selectivity towards their templates high affinity and selectivity for the templated proteins with dissociation constants (K d) of 159 and 299 nM for the Rgp- and Kgp-imprinted, surfaces respectively. The former surface displayed even higher affinity (K d = 71 nM) when tested in dilute cell culture supernatants. Calculated limits of detection for the sensors were 110 and 90 nM corresponding to levels below clinically relevant concentrations.
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Affiliation(s)
- Thomas Hix-Janssens
- Department
of Biomedical Science, Faculty of Health and Society, Malmö University, 205 06 Malmö, Sweden
| | - Sudhirkumar Shinde
- Department
of Biomedical Science, Faculty of Health and Society, Malmö University, 205 06 Malmö, Sweden
| | - Rahma Abouhany
- Department
of Biomedical Science, Faculty of Health and Society, Malmö University, 205 06 Malmö, Sweden
| | - Julia Davies
- Section
for Oral Biology and Pathology, Faculty of Odontology, Malmö University, 205 06 Malmö, Sweden
| | - Jessica Neilands
- Section
for Oral Biology and Pathology, Faculty of Odontology, Malmö University, 205 06 Malmö, Sweden
| | - Gunnel Svensäter
- Section
for Oral Biology and Pathology, Faculty of Odontology, Malmö University, 205 06 Malmö, Sweden
| | - Börje Sellergren
- Department
of Biomedical Science, Faculty of Health and Society, Malmö University, 205 06 Malmö, Sweden
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7
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Huynh CM, Arribas Díez I, Thi HKL, Jensen ON, Sellergren B, Irgum K. Terminally Phosphorylated Triblock Polyethers Acting Both as Templates and Pore-Forming Agents for Surface Molecular Imprinting of Monoliths Targeting Phosphopeptides. ACS Omega 2023; 8:8791-8803. [PMID: 36910939 PMCID: PMC9996590 DOI: 10.1021/acsomega.3c00007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 02/10/2023] [Indexed: 06/18/2023]
Abstract
The novel process reported here described the manufacture of monolithic molecularly imprinted polymers (MIPs) using a terminally functionalized block copolymer as the imprinting template and pore-forming agent. The MIPs were prepared through a step-growth polymerization process using a melamine-formaldehyde precondensate in a biphasic solvent system. Despite having a relatively low imprinting factor, the use of MIP monolith in liquid chromatography demonstrated the ability to selectively target desired analytes. An MIP capillary column was able to separate monophosphorylated peptides from a tryptic digest of bovine serum albumin. Multivariate data analysis and modeling of the phosphorylated and nonphosphorylated peptide retention times revealed that the number of phosphorylations was the strongest retention contributor for peptide retention on the monolithic MIP capillary column.
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Affiliation(s)
- Chau Minh Huynh
- Department
of Chemistry, Umeå University, S-901 87 Umeå, Sweden
| | - Ignacio Arribas Díez
- Department
of Biochemistry & Molecular Biology and VILLUM Center for Bioanalytical
Sciences, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Hien Kim Le Thi
- Department
of Chemistry, Umeå University, S-901 87 Umeå, Sweden
| | - Ole N. Jensen
- Department
of Biochemistry & Molecular Biology and VILLUM Center for Bioanalytical
Sciences, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Börje Sellergren
- Faculty
of Health and Society, Department of Biomedical Science, Malmö University, S-205 06 Malmö, Sweden
| | - Knut Irgum
- Department
of Chemistry, Umeå University, S-901 87 Umeå, Sweden
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8
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Yeung SY, Sergeeva Y, Pan G, Mittler S, Ederth T, Dam T, Jönsson P, El-Schich Z, Wingren AG, Tillo A, Hsiung Mattisson S, Holmqvist B, Stollenwerk MM, Sellergren B. Reversible Self-Assembled Monolayers with Tunable Surface Dynamics for Controlling Cell Adhesion Behavior. ACS Appl Mater Interfaces 2022; 14:41790-41799. [PMID: 36074978 PMCID: PMC9501787 DOI: 10.1021/acsami.2c12029] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 08/29/2022] [Indexed: 05/26/2023]
Abstract
Cells adhering onto surfaces sense and respond to chemical and physical surface features. The control over cell adhesion behavior influences cell migration, proliferation, and differentiation, which are important considerations in biomaterial design for cell culture, tissue engineering, and regenerative medicine. Here, we report on a supramolecular-based approach to prepare reversible self-assembled monolayers (rSAMs) with tunable lateral mobility and dynamic control over surface composition to regulate cell adhesion behavior. These layers were prepared by incubating oxoacid-terminated thiol SAMs on gold in a pH 8 HEPES buffer solution containing different mole fractions of ω-(ethylene glycol)2-4- and ω-(GRGDS)-, α-benzamidino bolaamphiphiles. Cell shape and morphology were influenced by the strength of the interactions between the amidine-functionalized amphiphiles and the oxoacid of the underlying SAMs. Dynamic control over surface composition, achieved by the addition of inert filler amphiphiles to the RGD-functionalized rSAMs, reversed the cell adhesion process. In summary, rSAMs featuring mobile bioactive ligands offer unique capabilities to influence and control cell adhesion behavior, suggesting a broad use in biomaterial design, tissue engineering, and regenerative medicine.
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Affiliation(s)
- Sing Yee Yeung
- Department
of Biomedical Sciences and Biofilms-Research Center for Biointerfaces
(BRCB), Faculty of Health and Society, Malmö
University, 205 06 Malmö, Sweden
| | - Yulia Sergeeva
- Department
of Biomedical Sciences and Biofilms-Research Center for Biointerfaces
(BRCB), Faculty of Health and Society, Malmö
University, 205 06 Malmö, Sweden
| | - Guoqing Pan
- Department
of Biomedical Sciences and Biofilms-Research Center for Biointerfaces
(BRCB), Faculty of Health and Society, Malmö
University, 205 06 Malmö, Sweden
- Institute
for Advanced Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212
013, China
| | - Silvia Mittler
- Department
of Physics and Astronomy, University of
Western Ontario, 1151 Richmond Street, London, Ontario, Canada N6A 3K7
| | - Thomas Ederth
- Division
of Biophysics and Bioengineering, Department of Physics, Chemistry
and Biology (IFM), Linköping University, 581 83 Linköping, Sweden
| | - Tommy Dam
- Division
of Physical Chemistry, Department of Chemistry, Lund University, 221 00 Lund, Sweden
| | - Peter Jönsson
- Division
of Physical Chemistry, Department of Chemistry, Lund University, 221 00 Lund, Sweden
| | - Zahra El-Schich
- Department
of Biomedical Sciences and Biofilms-Research Center for Biointerfaces
(BRCB), Faculty of Health and Society, Malmö
University, 205 06 Malmö, Sweden
| | - Anette Gjörloff Wingren
- Department
of Biomedical Sciences and Biofilms-Research Center for Biointerfaces
(BRCB), Faculty of Health and Society, Malmö
University, 205 06 Malmö, Sweden
| | - Adam Tillo
- Department
of Biomedical Sciences and Biofilms-Research Center for Biointerfaces
(BRCB), Faculty of Health and Society, Malmö
University, 205 06 Malmö, Sweden
| | | | - Bo Holmqvist
- ImaGene-iT
AB, Medicon Village,
Scheelevägen 2, 223 81 Lund, Sweden
| | - Maria M. Stollenwerk
- Department
of Biomedical Sciences and Biofilms-Research Center for Biointerfaces
(BRCB), Faculty of Health and Society, Malmö
University, 205 06 Malmö, Sweden
| | - Börje Sellergren
- Department
of Biomedical Sciences and Biofilms-Research Center for Biointerfaces
(BRCB), Faculty of Health and Society, Malmö
University, 205 06 Malmö, Sweden
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9
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Banan K, Ghorbani-Bidkorbeh F, Afsharara H, Hatamabadi D, Landi B, Keçili R, Sellergren B. Nano-sized magnetic core-shell and bulk molecularly imprinted polymers for selective extraction of amiodarone from human plasma. Anal Chim Acta 2022; 1198:339548. [DOI: 10.1016/j.aca.2022.339548] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 01/18/2022] [Accepted: 01/22/2022] [Indexed: 01/04/2023]
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10
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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.
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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.)
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11
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Shinde S, Mansour M, Mavliutova L, Incel A, Wierzbicka C, Abdel-Shafy HI, Sellergren B. Oxoanion Imprinting Combining Cationic and Urea Binding Groups: A Potent Glyphosate Adsorber. ACS Omega 2022; 7:587-598. [PMID: 35036726 PMCID: PMC8757333 DOI: 10.1021/acsomega.1c05079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 12/08/2021] [Indexed: 06/14/2023]
Abstract
The use of polymerizable hosts in anion imprinting has led to powerful receptors with high oxyanion affinity and specificity in both aqueous and non-aqueous environments. As demonstrated in previous reports, a carefully tuned combination of orthogonally interacting binding groups, for example, positively charged and neutral hydrogen bonding monomers, allows receptors to be constructed for use in either organic or aqueous environments, in spite of the polymer being prepared in non-competitive solvent systems. We here report on a detailed experimental design of phenylphosphonic and benzoic acid-imprinted polymer libraries prepared using either urea- or thiourea-based host monomers in the presence or absence of cationic comonomers for charge-assisted anion recognition. A comparison of hydrophobic and hydrophilic crosslinking monomers allowed optimum conditions to be identified for oxyanion binding in non-aqueous, fully aqueous, or high-salt media. This showed that recognition improved with the water content for thiourea-based molecularly imprinted polymers (MIPs) based on hydrophobic EGDMA with an opposite behavior shown by the polymers prepared using the more hydrophilic crosslinker PETA. While the affinity of thiourea-based MIPs increased with the water content, the opposite was observed for the oxourea counterparts. Binding to the latter could however be enhanced by raising the pH or by the introduction of cationic amine- or Na+-complexing crown ether-based comonomers. Use of high-salt media as expected suppressed the amine-based charge assistance, whereas it enhanced the effect of the crown ether function. Use of the optimized receptors for removing the ubiquitous pesticide glyphosate from urine finally demonstrated their practical utility.
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Affiliation(s)
- Sudhirkumar Shinde
- Biofilms
Research Center for Biointerfaces, Department of Biomedical Sciences,
Faculty of Health and Society, Malmö
University, 20506 Malmö, Sweden
- School
of Consciousness, Dr. Vishwanath Karad MIT
World Peace University, Kothrud, 411038 Pune, India
| | - Mona Mansour
- Biofilms
Research Center for Biointerfaces, Department of Biomedical Sciences,
Faculty of Health and Society, Malmö
University, 20506 Malmö, Sweden
| | - Liliia Mavliutova
- Biofilms
Research Center for Biointerfaces, Department of Biomedical Sciences,
Faculty of Health and Society, Malmö
University, 20506 Malmö, Sweden
| | - Anil Incel
- Biofilms
Research Center for Biointerfaces, Department of Biomedical Sciences,
Faculty of Health and Society, Malmö
University, 20506 Malmö, Sweden
| | - Celina Wierzbicka
- Biofilms
Research Center for Biointerfaces, Department of Biomedical Sciences,
Faculty of Health and Society, Malmö
University, 20506 Malmö, Sweden
| | - Hussein I. Abdel-Shafy
- Water
Research & Pollution Control Department, National Research Centre, Dokki, 11727 Cairo, Egypt
| | - Börje Sellergren
- Biofilms
Research Center for Biointerfaces, Department of Biomedical Sciences,
Faculty of Health and Society, Malmö
University, 20506 Malmö, Sweden
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12
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Ambaw YA, Dahl SR, Chen Y, Greibrokk T, Lundanes E, Lazraq I, Shinde S, Selvalatchmanan J, Wenk MR, Sellergren B, Torta F. Tailored Polymer-Based Selective Extraction of Lipid Mediators from Biological Samples. Metabolites 2021; 11:539. [PMID: 34436480 PMCID: PMC8398397 DOI: 10.3390/metabo11080539] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 08/04/2021] [Accepted: 08/05/2021] [Indexed: 11/17/2022] Open
Abstract
Lipid mediators, small molecules involved in regulating inflammation and its resolution, are a class of lipids of wide interest as their levels in blood and tissues may be used to monitor health and disease states or the effect of new treatments. These molecules are present at low levels in biological samples, and an enrichment step is often needed for their detection. We describe a rapid and selective method that uses new low-cost molecularly imprinted (MIP) and non-imprinted (NIP) polymeric sorbents for the extraction of lipid mediators from plasma and tissue samples. The extraction process was carried out in solid-phase extraction (SPE) cartridges, manually packed with the sorbents. After extraction, lipid mediators were quantified by liquid chromatography-tandem mass spectrometry (LC-MSMS). Various parameters affecting the extraction efficiency were evaluated to achieve optimal recovery and to reduce non-specific interactions. Preliminary tests showed that MIPs, designed using the prostaglandin biosynthetic precursor arachidonic acid, could effectively enrich prostaglandins and structurally related molecules. However, for other lipid mediators, MIP and NIP displayed comparable recoveries. Under optimized conditions, the recoveries of synthetic standards ranged from 62% to 100%. This new extraction method was applied to the determination of the lipid mediators concentration in human plasma and mouse tissues and compared to other methods based on commercially available cartridges. In general, the methods showed comparable performances. In terms of structural specificity, our newly synthesized materials accomplished better retention of prostaglandins (PGs), hydroxydocosahexaenoic acid (HDoHE), HEPE, hydroxyeicosatetraenoic acids (HETE), hydroxyeicosatrienoic acid (HETrE), and polyunsaturated fatty acid (PUFA) compounds, while the commercially available Strata-X showed a higher recovery for dihydroxyeicosatetraenoic acid (diHETrEs). In summary, our results suggest that this new material can be successfully implemented for the extraction of lipid mediators from biological samples.
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Affiliation(s)
- Yohannes Abere Ambaw
- Precision Medicine Translational Research Programme and Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119077, Singapore; (Y.A.A.); (J.S.); (M.R.W.)
- SLING, Singapore Lipidomics Incubator, Life Sciences Institute, National University of Singapore, Singapore 119077, Singapore
- Department of Molecular Metabolism, Harvard T.H. Chan School of Public Health, Harvard University, Cambridge, MA 02138, USA
| | - Sandra Rinne Dahl
- Department of Chemistry, University of Oslo, 0315 Oslo, Norway; (S.R.D.); (Y.C.); (T.G.); (E.L.)
- Hormone Laboratory, Department of Medical Biochemistry, Oslo University Hospital, 0424 Oslo, Norway
| | - Yan Chen
- Department of Chemistry, University of Oslo, 0315 Oslo, Norway; (S.R.D.); (Y.C.); (T.G.); (E.L.)
| | - Tyge Greibrokk
- Department of Chemistry, University of Oslo, 0315 Oslo, Norway; (S.R.D.); (Y.C.); (T.G.); (E.L.)
| | - Elsa Lundanes
- Department of Chemistry, University of Oslo, 0315 Oslo, Norway; (S.R.D.); (Y.C.); (T.G.); (E.L.)
| | - Issam Lazraq
- Department of Biomedical Sciences, Biofilms Research Center for Biointerfaces, Faculty of Health and Society, Malmö University, 21119 Malmö, Sweden; (I.L.); (S.S.)
| | - Sudhirkumar Shinde
- Department of Biomedical Sciences, Biofilms Research Center for Biointerfaces, Faculty of Health and Society, Malmö University, 21119 Malmö, Sweden; (I.L.); (S.S.)
- School of Consciousness, Dr Vishwanath Karad Maharashtra Institute of Technology–World Peace University, Kothrud, Pune 411038, Maharashtra, India
| | - Jayashree Selvalatchmanan
- Precision Medicine Translational Research Programme and Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119077, Singapore; (Y.A.A.); (J.S.); (M.R.W.)
- SLING, Singapore Lipidomics Incubator, Life Sciences Institute, National University of Singapore, Singapore 119077, Singapore
| | - Markus R. Wenk
- Precision Medicine Translational Research Programme and Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119077, Singapore; (Y.A.A.); (J.S.); (M.R.W.)
- SLING, Singapore Lipidomics Incubator, Life Sciences Institute, National University of Singapore, Singapore 119077, Singapore
| | - Börje Sellergren
- Department of Biomedical Sciences, Biofilms Research Center for Biointerfaces, Faculty of Health and Society, Malmö University, 21119 Malmö, Sweden; (I.L.); (S.S.)
| | - Federico Torta
- Precision Medicine Translational Research Programme and Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119077, Singapore; (Y.A.A.); (J.S.); (M.R.W.)
- SLING, Singapore Lipidomics Incubator, Life Sciences Institute, National University of Singapore, Singapore 119077, Singapore
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13
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Mavliutova L, Munoz Aldeguer B, Wiklander J, Wierzbicka C, Huynh CM, Nicholls IA, Irgum K, Sellergren B. Discrimination between sialic acid linkage modes using sialyllactose-imprinted polymers. RSC Adv 2021; 11:22409-22418. [PMID: 35480790 PMCID: PMC9034230 DOI: 10.1039/d1ra02274a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 03/22/2021] [Accepted: 05/31/2021] [Indexed: 12/22/2022] Open
Abstract
Glycosylation plays an important role in various pathological processes such as cancer. One key alteration in the glycosylation pattern correlated with cancer progression is an increased level as well as changes in the type of sialylation. Developing molecularly-imprinted polymers (MIPs) with high affinity for sialic acid able to distinguish different glycoforms such as sialic acid linkages is an important task which can help in early cancer diagnosis. Sialyllactose with α2,6′ vs. α2,3′ sialic acid linkage served as a model trisaccharide template. Boronate chemistry was employed in combination with a library of imidazolium-based monomers targeting the carboxylate group of sialic acid. The influence of counterions of the cationic monomers and template on their interactions was investigated by means of 1H NMR titration studies. The highest affinities were afforded using a combination of Br− and Na+ counterions of the monomers and template, respectively. The boronate ester formation was confirmed by MS and 1H/11B NMR, indicating 1 : 2 stoichiometries between sialyllactoses and boronic acid monomer. Polymers were synthesized in the form of microparticles using boronate and imidazolium monomers. This combinatorial approach afforded MIPs selective for the sialic acid linkages and compatible with an aqueous environment. The molecular recognition properties with respect to saccharide templates and glycosylated targets were reported. 2,6′- and 2,3′-sialyllactose imprinted polymers (MIPs) capable of discriminating between two modes of sialic acid linkages in glycans are reported.![]()
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Affiliation(s)
- Liliia Mavliutova
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University SE-20506 Malmö Sweden
| | - Bruna Munoz Aldeguer
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University SE-20506 Malmö Sweden
| | - Jesper Wiklander
- Bioorganic and Biophysical Chemistry Laboratory, Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry and Biomedical Sciences, Linnaeus University 391 82 Kalmar Sweden
| | - Celina Wierzbicka
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University SE-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 391 82 Kalmar Sweden
| | - Knut Irgum
- Department of Chemistry, Umeå University 901 87 Umeå Sweden
| | - Börje Sellergren
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University SE-20506 Malmö Sweden
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14
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Mavliutova L, Verduci E, Shinde SA, Sellergren B. Combinatorial Design of a Sialic Acid-Imprinted Binding Site. ACS Omega 2021; 6:12229-12237. [PMID: 34056377 PMCID: PMC8154165 DOI: 10.1021/acsomega.1c01111] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 04/22/2021] [Indexed: 06/12/2023]
Abstract
Aberrant glycosylation has been proven to correlate with various diseases including cancer. An important alteration in cancer progression is an increased level of sialylation, making sialic acid one of the key constituents in tumor-specific glycans and an interesting biomarker for a diversity of cancer types. Developing molecularly imprinted polymers (MIPs) with high affinity toward sialic acids is an important task that can help in early cancer diagnosis. In this work, the glycospecific MIPs are produced using cooperative covalent/noncovalent imprinting. We report here on the fundamental investigation of this termolecular imprinting approach. This comprises studies of the relative contribution of orthogonally interacting functional monomers and their synergetic behavior and the choice of different counterions on the molecular recognition properties for the sialylated targets. Combining three functional monomers targeting different functionalities on the template led to enhanced imprinting factors (IFs) and selectivities. This apparent cooperative effect was supported by 1H NMR and fluorescence titrations of monomers with templates or template analogs. Moreover, highlighting the role of the template counterion use of tetrabutylammonium (TBA) salt of sialic acid resulted in better imprinting than that of sodium salts supported by both in solution interaction studies and in MIP rebinding experiments. The glycospecific MIPs display high affinity for sialylated targets, with an overall low binding of other nontarget saccharides.
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15
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Incel A, Arribas Díez I, Wierzbicka C, Gajoch K, Jensen ON, Sellergren B. Selective Enrichment of Histidine Phosphorylated Peptides Using Molecularly Imprinted Polymers. Anal Chem 2021; 93:3857-3866. [PMID: 33591162 PMCID: PMC8023515 DOI: 10.1021/acs.analchem.0c04474] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [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: 12/15/2022]
Abstract
![]()
Protein histidine
phosphorylation
(pHis) is involved in molecular signaling networks in bacteria, fungi,
plants, and higher eukaryotes including mammals and is implicated
in human diseases such as cancer. Detailed investigations of the pHis
modification are hampered due to its acid-labile nature and consequent
lack of tools to study this post-translational modification (PTM).
We here demonstrate three molecularly imprinted polymer (MIP)-based
reagents, MIP1–MIP3, for enrichment of pHis peptides and subsequent
characterization by chromatography and mass spectrometry (LC–MS).
The combination of MIP1 and β-elimination provided some selectivity
for improved detection of pHis peptides. MIP2 was amenable to larger
pHis peptides, although with poor selectivity. Microsphere-based MIP3
exhibited improved selectivity and was amenable to enrichment and
detection by LC–MS of pHis peptides in tryptic digests of protein
mixtures. These MIP protocols do not involve any acidic solvents during
sample preparation and enrichment, thus preserving the pHis modification.
The presented proof-of-concept results will lead to new protocols
for highly selective enrichment of labile protein phosphorylations
using molecularly imprinted materials.
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Affiliation(s)
- Anıl Incel
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, 205 06 Malmö, Sweden
| | - Ignacio Arribas Díez
- Department of Biochemistry & Molecular Biology and VILLUM Center for Bioanalytical Sciences, University of Southern Denmark, DK-5230 Odense M, Denmark
| | - Celina Wierzbicka
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, 205 06 Malmö, Sweden
| | - Katarzyna Gajoch
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, 205 06 Malmö, Sweden
| | - Ole N Jensen
- Department of Biochemistry & Molecular Biology and VILLUM Center for Bioanalytical Sciences, University of Southern Denmark, DK-5230 Odense M, Denmark
| | - Börje Sellergren
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, 205 06 Malmö, Sweden
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16
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Mavliutova L, Verduci E, Sellergren B. Combinatorial design of a sialic acid imprinted binding site exploring a dual ion receptor approach. RSC Adv 2021; 11:34329-34337. [PMID: 35497298 PMCID: PMC9042400 DOI: 10.1039/d1ra06962d] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 10/15/2021] [Indexed: 11/21/2022] Open
Abstract
Dual-ion imprinting of sialic acid via cooperatively acting ureido- and crown ether functionalities leads to charge neutral sialic acid receptors with strong sialoglycopeptide affinity.
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Affiliation(s)
- Liliia Mavliutova
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, SE-20506 Malmö, Sweden
| | - Elena Verduci
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, SE-20506 Malmö, Sweden
| | - Börje Sellergren
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, SE-20506 Malmö, Sweden
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17
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Gornik T, Shinde S, Lamovsek L, Koblar M, Heath E, Sellergren B, Kosjek T. Molecularly Imprinted Polymers for the Removal of Antidepressants from Contaminated Wastewater. Polymers (Basel) 2020; 13:polym13010120. [PMID: 33396803 PMCID: PMC7794900 DOI: 10.3390/polym13010120] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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: 11/24/2020] [Revised: 12/21/2020] [Accepted: 12/23/2020] [Indexed: 02/07/2023] Open
Abstract
Selective serotonin reuptake inhibitors (SSRIs) are a class of antidepressants regularly detected in the environment. This indicates that the existing wastewater treatment techniques are not successfully removing them beforehand. This study investigated the potential of molecularly imprinted polymers (MIPs) to serve as sorbents for removal of SSRIs in water treatment. Sertraline was chosen as the template for imprinting. We optimized the composition of MIPs in order to obtain materials with highest capacity, affinity, and selectivity for sertraline. We report the maximum capacity of MIP for sertraline in water at 72.6 mg g−1, and the maximum imprinting factor at 3.7. The MIPs were cross-reactive towards other SSRIs and the metabolite norsertraline. They showed a stable performance in wastewater-relevant pH range between 6 and 8, and were reusable after a short washing cycle. Despite having a smaller surface area between 27.4 and 193.8 m2·g−1, as compared to that of the activated carbon at 1400 m2·g−1, their sorption capabilities in wastewaters were generally superior. The MIPs with higher surface area and pore volume that formed more non-specific interactions with the targets considerably contributed to the overall removal efficiency, which made them better suited for use in wastewater treatment.
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Affiliation(s)
- Tjasa Gornik
- Department of Environmental Sciences, Jozef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia; (T.G.); (E.H.)
- Jozef Stefan International Postgraduate School, Jamova 39, 1000 Ljubljana, Slovenia;
| | - Sudhirkumar Shinde
- Department of Biomedical Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society, Malmö University, 20506 Malmö, Sweden; (S.S.); (B.S.)
- School of Chemistry and Chemical Engineering, Queens University Belfast, Belfast BT9 5AG, UK
| | - Lea Lamovsek
- Department of Biopharmacy and Pharmacokinetics, Faculty of Pharmacy, University of Ljubljana, Askerceva 7, 1000 Ljubljana, Slovenia;
| | - Maja Koblar
- Jozef Stefan International Postgraduate School, Jamova 39, 1000 Ljubljana, Slovenia;
- Center for Electron Microscopy and Microanalysis (CEMM), Jamova 39, 1000 Ljubljana, Slovenia
| | - Ester Heath
- Department of Environmental Sciences, Jozef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia; (T.G.); (E.H.)
- Jozef Stefan International Postgraduate School, Jamova 39, 1000 Ljubljana, Slovenia;
| | - Börje Sellergren
- Department of Biomedical Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society, Malmö University, 20506 Malmö, Sweden; (S.S.); (B.S.)
| | - Tina Kosjek
- Department of Environmental Sciences, Jozef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia; (T.G.); (E.H.)
- Jozef Stefan International Postgraduate School, Jamova 39, 1000 Ljubljana, Slovenia;
- Correspondence: ; Tel.: +386/1-477-3288
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18
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Shinde S, Incel A, Mansour M, Olsson GD, Nicholls IA, Esen C, Urraca J, Sellergren B. Urea-Based Imprinted Polymer Hosts with Switchable Anion Preference. J Am Chem Soc 2020; 142:11404-11416. [PMID: 32425049 PMCID: PMC7467678 DOI: 10.1021/jacs.0c00707] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [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: 01/06/2023]
Abstract
![]()
The
design of artificial oxyanion receptors with switchable ion
preference is a challenging goal in host–guest chemistry. We
here report on molecularly imprinted polymers (MIPs) with an external
phospho-sulpho switch driven by small molecule modifiers. The polymers
were prepared by hydrogen bond-mediated imprinting of the mono- or
dianions of phenyl phosphonic acid (PPA), phenyl sulfonic acid (PSA),
and benzoic acid (BA) using N-3,5-bis-(trifluoromethyl)-phenyl-Ń-4-vinylphenyl urea (1) as the functional
host monomer. The interaction mode between the functional monomer
and the monoanions was elucidated by 1H NMR titrations
and 1H–1H NMR NOESY supported by molecular
dynamic simulation, which confirmed the presence of high-order complexes.
PPA imprinted polymers bound PPA with an equilibrium constant Keq = 1.8 × 105 M–1 in acetonitrile (0.1% 1,2,2,6,6-pentamethylpiperidine) and inorganic
HPO42– and SO42– with Keq = 2.9 × 103 M–1 and 4.5 × 103 M–1, respectively, in aqueous buffer. Moreover, the chromatographic
retentivity of phosphonate versus sulfonate was shown to be completely
switched on this polymer when changing from a basic to an acidic modifier.
Mechanistic insights into this system were obtained from kinetic investigations
and DSC-, MALDI-TOF-MS-, 1H NMR-studies of linear polymers
prepared in the presence of template. The results suggest the formation
of template induced 1–1 diad repeats in the polymer main chain
shedding unique light on the relative contributions of configurational
and conformational imprinting.
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Affiliation(s)
- Sudhirkumar Shinde
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, 20506 Malmö, Sweden.,Faculty of Chemistry, Technical University of Dortmund, Otto-Hahn-Straße 6, 44227, Dortmund, Germany
| | - Anil Incel
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, 20506 Malmö, Sweden
| | - Mona Mansour
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, 20506 Malmö, Sweden
| | - Gustaf D Olsson
- Bioorganic & Biophysical Chemistry Laboratory, Linneaus University Center for Biomaterials Chemistry, Department of Chemistry & Biomedical Sciences, Linnaeus University, 39182 Kalmar, Sweden
| | - Ian A Nicholls
- Bioorganic & Biophysical Chemistry Laboratory, Linneaus University Center for Biomaterials Chemistry, Department of Chemistry & Biomedical Sciences, Linnaeus University, 39182 Kalmar, Sweden
| | - Cem Esen
- Faculty of Chemistry, Technical University of Dortmund, Otto-Hahn-Straße 6, 44227, Dortmund, Germany
| | - Javier Urraca
- Faculty of Chemistry, Technical University of Dortmund, Otto-Hahn-Straße 6, 44227, Dortmund, Germany
| | - Börje Sellergren
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, 20506 Malmö, Sweden.,Faculty of Chemistry, Technical University of Dortmund, Otto-Hahn-Straße 6, 44227, Dortmund, Germany
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19
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Abstract
Imprinting of an ion-pair in presence of mutually compatible anion and cation host monomers leads to polymers showing enhanced ion uptake in competitive high ionic strength buffers.
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Affiliation(s)
- Sudhirkumar Shinde
- Department of Biomedical Sciences
- Faculty of Health and Society
- Malmö University
- 20506 Malmö
- Sweden
| | - Mona Mansour
- Department of Biomedical Sciences
- Faculty of Health and Society
- Malmö University
- 20506 Malmö
- Sweden
| | - Anil Incel
- Department of Biomedical Sciences
- Faculty of Health and Society
- Malmö University
- 20506 Malmö
- Sweden
| | - Liliia Mavliutova
- Department of Biomedical Sciences
- Faculty of Health and Society
- Malmö University
- 20506 Malmö
- Sweden
| | - Celina Wierzbicka
- Department of Biomedical Sciences
- Faculty of Health and Society
- Malmö University
- 20506 Malmö
- Sweden
| | - Börje Sellergren
- Department of Biomedical Sciences
- Faculty of Health and Society
- Malmö University
- 20506 Malmö
- Sweden
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20
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Moczko E, Guerreiro A, Cáceres C, Piletska E, Sellergren B, Piletsky SA. Epitope approach in molecular imprinting of antibodies. J Chromatogr B Analyt Technol Biomed Life Sci 2019; 1124:1-6. [DOI: 10.1016/j.jchromb.2019.05.024] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 05/22/2019] [Accepted: 05/24/2019] [Indexed: 11/25/2022]
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21
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Liu M, Torsetnes SB, Wierzbicka C, Jensen ON, Sellergren B, Irgum K. Selective Enrichment of Phosphorylated Peptides by Monolithic Polymers Surface Imprinted with bis-Imidazolium Moieties by UV-Initiated Cryopolymerization. Anal Chem 2019; 91:10188-10196. [DOI: 10.1021/acs.analchem.9b02211] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Mingquan Liu
- Umeå University, Department of Chemistry, S-901 87 Umeå, Sweden
| | - Silje Bøen Torsetnes
- University of Southern Denmark, Department of Biochemistry and Molecular Biology and VILLUM Center for Bioanalytical Sciences, Campusvej 55, DK-5230 Odense M, Denmark
| | - Celina Wierzbicka
- Malmö University, Department of Biomedical Sciences, Faculty of Health and Society, S-205 06 Malmö, Sweden
| | - Ole Nørregaard Jensen
- University of Southern Denmark, Department of Biochemistry and Molecular Biology and VILLUM Center for Bioanalytical Sciences, Campusvej 55, DK-5230 Odense M, Denmark
| | - Börje Sellergren
- Malmö University, Department of Biomedical Sciences, Faculty of Health and Society, S-205 06 Malmö, Sweden
| | - Knut Irgum
- Umeå University, Department of Chemistry, S-901 87 Umeå, Sweden
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22
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Yeung SY, Sergeeva Y, Dam T, Jönsson P, Pan G, Chaturvedi V, Sellergren B. Lipid Bilayer-like Mixed Self-Assembled Monolayers with Strong Mobility and Clustering-Dependent Lectin Affinity. Langmuir 2019; 35:8174-8181. [PMID: 31117738 DOI: 10.1021/acs.langmuir.9b01452] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Glycans at the surface of cellular membranes modulate biological activity via multivalent association with extracellular messengers. The lack of tuneable simplified models mimicking this dynamic environment complicates basic studies of these phenomena. We here present a series of mixed reversible self-assembled monolayers (rSAMs) that addresses this deficiency. Mixed rSAMs were prepared in water by simple immersion of a negatively charged surface in a mixture of sialic acid- and hydroxy-terminated benzamidine amphiphiles. Surface compositions derived from infrared reflection-absorption spectroscopy (IRAS) and film thickness information (atomic force microscopy, ellipsometry) suggest the latter to be statistically incorporated in the monolayer. These surfaces' affinity for the lectin hemagglutinin revealed a strong dependence of the affinity on the presentation, density, and mobility of the sialic acid ligands. Hence, a spacer length of 4 ethylene glycol and a surface density of 15% resulted in a dissociation constant Kd,multi of 1.3 × 10-13 M, on par with the best di- or tri-saccharide-based binders reported to date, whereas a density of 20% demonstrated complete resistance to hemagglutinin binding. These results correlated with ligand mobility measured by fluorescence recovery after photobleaching which showed a dramatic drop in the same interval. The results have a direct bearing on biological cell surface multivalent recognition involving lipid bilayers and may guide the design of model surfaces and sensors for both fundamental and applied studies.
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Affiliation(s)
- Sing Yee Yeung
- Department of Biomedical Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society , Malmö University , 205 06 Malmö , Sweden
| | - Yulia Sergeeva
- Department of Biomedical Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society , Malmö University , 205 06 Malmö , Sweden
| | - Tommy Dam
- Division of Physical Chemistry , Lund University , Box 124, 22100 Lund , Sweden
| | - Peter Jönsson
- Division of Physical Chemistry , Lund University , Box 124, 22100 Lund , Sweden
| | - Guoqing Pan
- Department of Biomedical Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society , Malmö University , 205 06 Malmö , Sweden
| | - Vivek Chaturvedi
- Department of Biomedical Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society , Malmö University , 205 06 Malmö , Sweden
| | - Börje Sellergren
- Department of Biomedical Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society , Malmö University , 205 06 Malmö , Sweden
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23
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Wang J, Dai J, Xu Y, Dai X, Zhang Y, Shi W, Sellergren B, Pan G. Molecularly Imprinted Fluorescent Test Strip for Direct, Rapid, and Visual Dopamine Detection in Tiny Amount of Biofluid. Small 2019; 15:e1803913. [PMID: 30468558 DOI: 10.1002/smll.201803913] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 11/07/2018] [Indexed: 05/20/2023]
Abstract
Paper-based assays for detection of physiologically important species are needed in medical theranostics owning to their superiorities in point of care testing, daily monitoring, and even visual readout by using chromogenic materials. In this work, a facile test strip is developed for visual detection of a neurotransmitter dopamine (DA) based on dual-emission fluorescent molecularly imprinted polymer nanoparticles (DE-MIPs). The DE-MIPs, featured with tailor-made DA affinity and good anti-interference, exhibit DA concentration-dependent fluorescent colors, due to the variable ratios of dual-emission fluorescence caused by DA binding and quenching. By facile coating DE-MIPs on a filter paper, the DA test strips are obtained. The resultant test strip, like the simplicity of a pH test paper, shows the potential for directly visual detection of DA levels just by dripping a tiny amount of biofluid sample on it. The test result of real serum samples demonstrates that the DA strip enables to visually and semiquantitatively detect DA within 3 min by using only 10 µL of serum samples and with a low detection limit ((100-150) × 10-9 m) by naked eye. This work thus offers a facile and efficient strategy for rapid, visual, and on-site detection of biofluids in clinic.
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Affiliation(s)
- Jixiang Wang
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
- School of the Environment and Safety Engineering, Jiangsu University, Jiangsu, 212013, China
| | - Jiangdong Dai
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Yeqing Xu
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
- School of the Environment and Safety Engineering, Jiangsu University, Jiangsu, 212013, China
| | - Xiaohui Dai
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Yunlei Zhang
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Weidong Shi
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Börje Sellergren
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, SE 205 06, Malmö, Sweden
| | - Guoqing Pan
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, SE 205 06, Malmö, Sweden
- Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
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24
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Ertürk G, Akhoundian M, Lueg-Althoff K, Shinde S, Yeung SY, Hedström M, Schrader T, Mattiasson B, Sellergren B. Bisphosphonate ligand mediated ultrasensitive capacitive protein sensor: complementary match of supramolecular and dynamic chemistry. NEW J CHEM 2019. [DOI: 10.1039/c8nj05238g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A powerful polymeric protein sensor was constructed by microcontact imprinting taking advantage of the specific interaction between a bisphosphonate binding monomer and lysine/arginine residues on the surface of trypsin.
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Affiliation(s)
- Gizem Ertürk
- Department of Biomedical Sciences
- Faculty of Health and Society
- Malmö University
- SE-20506 Malmö
- Sweden
| | - Maedeh Akhoundian
- Department of Biomedical Sciences
- Faculty of Health and Society
- Malmö University
- SE-20506 Malmö
- Sweden
| | | | - Sudhirkumar Shinde
- Department of Biomedical Sciences
- Faculty of Health and Society
- Malmö University
- SE-20506 Malmö
- Sweden
| | - Sing Yee Yeung
- Department of Biomedical Sciences
- Faculty of Health and Society
- Malmö University
- SE-20506 Malmö
- Sweden
| | - Martin Hedström
- CapSenze Biosystems AB
- Lund
- Sweden
- Department of Biotechnology
- Lund University
| | - Thomas Schrader
- Department of Chemistry
- University of Duisburg-Essen
- Essen
- Germany
| | - Bo Mattiasson
- CapSenze Biosystems AB
- Lund
- Sweden
- Department of Biotechnology
- Lund University
| | - Börje Sellergren
- Department of Biomedical Sciences
- Faculty of Health and Society
- Malmö University
- SE-20506 Malmö
- Sweden
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25
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Mahajan R, Rouhi M, Shinde S, Bedwell T, Incel A, Mavliutova L, Piletsky S, Nicholls IA, Sellergren B. Highly Efficient Synthesis and Assay of Protein-Imprinted Nanogels by Using Magnetic Templates. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201805772] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Rashmi Mahajan
- Bioorganic and Biophysical Chemistry Laboratory; Linnaeus University Centre for Biomaterials Chemistry; Department of Chemistry and Biomedical Sciences; Linnaeus University; 391 82 Kalmar Sweden
| | - Mona Rouhi
- Department of Biomedical Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society; Malmö University; 205 06 Malmö Sweden
| | - Sudhirkumar Shinde
- Department of Biomedical Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society; Malmö University; 205 06 Malmö Sweden
| | - Thomas Bedwell
- Chemistry Department; College of Science and Engineering; University of Leicester; Leicester LE1 7RH UK
| | - Anil Incel
- Department of Biomedical Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society; Malmö University; 205 06 Malmö Sweden
| | - Liliia Mavliutova
- Department of Biomedical Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society; Malmö University; 205 06 Malmö Sweden
| | - Sergey Piletsky
- Chemistry Department; College of Science and Engineering; University of Leicester; Leicester LE1 7RH UK
| | - Ian A. Nicholls
- Bioorganic and Biophysical Chemistry Laboratory; Linnaeus University Centre for Biomaterials Chemistry; Department of Chemistry and Biomedical Sciences; Linnaeus University; 391 82 Kalmar Sweden
| | - Börje Sellergren
- Department of Biomedical Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society; Malmö University; 205 06 Malmö Sweden
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26
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Mahajan R, Rouhi M, Shinde S, Bedwell T, Incel A, Mavliutova L, Piletsky S, Nicholls IA, Sellergren B. Highly Efficient Synthesis and Assay of Protein-Imprinted Nanogels by Using Magnetic Templates. Angew Chem Int Ed Engl 2018; 58:727-730. [PMID: 30308085 PMCID: PMC6471088 DOI: 10.1002/anie.201805772] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [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: 05/22/2018] [Revised: 09/10/2018] [Indexed: 12/29/2022]
Abstract
We report an approach integrating the synthesis of protein‐imprinted nanogels (“plastic antibodies”) with a highly sensitive assay employing templates attached to magnetic carriers. The enzymes trypsin and pepsin were immobilized on amino‐functionalized solgel‐coated magnetic nanoparticles (magNPs). Lightly crosslinked fluorescently doped polyacrylamide nanogels were subsequently produced by high‐dilution polymerization of monomers in the presence of the magNPs. The nanogels were characterised by a novel competitive fluorescence assay employing identical protein‐conjugated nanoparticles as ligands to reversibly immobilize the corresponding nanogels. Both nanogels exhibited Kd<10 pM for their respective target protein and low cross‐reactivity with five reference proteins. This agrees with affinities reported for solid‐phase‐synthesized nanogels prepared using low‐surface‐area glass‐bead supports. This approach simplifies the development and production of plastic antibodies and offers direct access to a practical bioassay.
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Affiliation(s)
- Rashmi Mahajan
- Bioorganic and Biophysical Chemistry Laboratory, Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry and Biomedical Sciences, Linnaeus University, 391 82, Kalmar, Sweden
| | - Mona Rouhi
- Department of Biomedical Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society, Malmö University, 205 06, Malmö, Sweden
| | - Sudhirkumar Shinde
- Department of Biomedical Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society, Malmö University, 205 06, Malmö, Sweden
| | - Thomas Bedwell
- Chemistry Department, College of Science and Engineering, University of Leicester, Leicester, LE1 7RH, UK
| | - Anil Incel
- Department of Biomedical Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society, Malmö University, 205 06, Malmö, Sweden
| | - Liliia Mavliutova
- Department of Biomedical Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society, Malmö University, 205 06, Malmö, Sweden
| | - Sergey Piletsky
- Chemistry Department, College of Science and Engineering, University of Leicester, Leicester, LE1 7RH, UK
| | - Ian A Nicholls
- Bioorganic and Biophysical Chemistry Laboratory, Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry and Biomedical Sciences, Linnaeus University, 391 82, Kalmar, Sweden
| | - Börje Sellergren
- Department of Biomedical Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society, Malmö University, 205 06, Malmö, Sweden
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27
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Bakkour R, Bolotin J, Sellergren B, Hofstetter TB. Molecularly Imprinted Polymers for Compound-Specific Isotope Analysis of Polar Organic Micropollutants in Aquatic Environments. Anal Chem 2018; 90:7292-7301. [DOI: 10.1021/acs.analchem.8b00493] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Rani Bakkour
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, CH-8600 Dübendorf, Switzerland
- Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, CH-8092 Zürich, Switzerland
| | - Jakov Bolotin
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, CH-8600 Dübendorf, Switzerland
| | - Börje Sellergren
- Department of Biomedical Sciences, Malmö University, 20506 Malmö, Sweden
| | - Thomas B. Hofstetter
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, CH-8600 Dübendorf, Switzerland
- Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, CH-8092 Zürich, Switzerland
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28
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Yeung SY, Ederth T, Pan G, Cicėnaitė J, Cárdenas M, Arnebrant T, Sellergren B. Reversible Self-Assembled Monolayers (rSAMs) as Robust and Fluidic Lipid Bilayer Mimics. Langmuir 2018; 34:4107-4115. [PMID: 29553755 DOI: 10.1021/acs.langmuir.8b00226] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Lipid bilayers, forming the outer barrier of cells, display a wide array of proteins and carbohydrates for modulating interfacial biological interactions. Formed by the spontaneous self-assembly of lipid molecules, these bilayers feature liquid crystalline order, while retaining a high degree of lateral mobility. Studies of these dynamic phenomena have been hampered by the fragility and instability of corresponding biomimetic cell membrane models. Here, we present the construct of a series of oligoethylene glycol-terminated reversible self-assembled monolayers (rSAMs) featuring lipid-bilayer-like fluidity, while retaining air and protein stability and resistance. These robust and ordered layers were prepared by simply immersing a carboxylic acid-terminated self-assembled monolayer into 5-50 μM aqueous ω-(4-ethylene glycol-phenoxy)-α-(4-amidinophenoxy)decane solutions. It is anticipated that this new class of robust and fluidic two-dimensional biomimetic surfaces will impact the design of rugged cell surface mimics and high-performance biosensors.
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Affiliation(s)
- Sing Yee Yeung
- Department of Biomedical Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society , Malmö University , 205 06 Malmö , Sweden
| | - Thomas Ederth
- Division of Molecular Physics, Department of Physics, Chemistry and Biology (IFM) , Linköping University , 581 83 Linköping , Sweden
| | - Guoqing Pan
- Department of Biomedical Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society , Malmö University , 205 06 Malmö , Sweden
| | - Judita Cicėnaitė
- Department of Biomedical Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society , Malmö University , 205 06 Malmö , Sweden
| | - Marité Cárdenas
- Department of Biomedical Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society , Malmö University , 205 06 Malmö , Sweden
| | - Thomas Arnebrant
- Department of Biomedical Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society , Malmö University , 205 06 Malmö , Sweden
| | - Börje Sellergren
- Department of Biomedical Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society , Malmö University , 205 06 Malmö , Sweden
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29
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Pan G, Shinde S, Yeung SY, Jakštaitė M, Li Q, Wingren AG, Sellergren B. An Epitope-Imprinted Biointerface with Dynamic Bioactivity for Modulating Cell-Biomaterial Interactions. Angew Chem Int Ed Engl 2017; 56:15959-15963. [PMID: 28960837 PMCID: PMC6001786 DOI: 10.1002/anie.201708635] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [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: 08/22/2017] [Indexed: 01/14/2023]
Abstract
In this study, an epitope-imprinting strategy was employed for the dynamic display of bioactive ligands on a material interface. An imprinted surface was initially designed to exhibit specific affinity towards a short peptide (i.e., the epitope). This surface was subsequently used to anchor an epitope-tagged cell-adhesive peptide ligand (RGD: Arg-Gly-Asp). Owing to reversible epitope-binding affinity, ligand presentation and thereby cell adhesion could be controlled. As compared to current strategies for the fabrication of dynamic biointerfaces, for example, through reversible covalent or host-guest interactions, such a molecularly tunable dynamic system based on a surface-imprinting process may unlock new applications in in situ cell biology, diagnostics, and regenerative medicine.
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Affiliation(s)
- Guoqing Pan
- Department of Biomedical Sciences, Faculty of Health and SocietyMalmö UniversitySE 205 06MalmöSweden
- Institute for Advanced MaterialsSchool of Materials Science and EngineeringJiangsu UniversityZhenjiangJiangsu212013China
| | - Sudhirkumar Shinde
- Department of Biomedical Sciences, Faculty of Health and SocietyMalmö UniversitySE 205 06MalmöSweden
| | - Sing Yee Yeung
- Department of Biomedical Sciences, Faculty of Health and SocietyMalmö UniversitySE 205 06MalmöSweden
| | - Miglė Jakštaitė
- Department of Biomedical Sciences, Faculty of Health and SocietyMalmö UniversitySE 205 06MalmöSweden
| | - Qianjin Li
- Department of Biomedical Sciences, Faculty of Health and SocietyMalmö UniversitySE 205 06MalmöSweden
| | - Anette Gjörloff Wingren
- Department of Biomedical Sciences, Faculty of Health and SocietyMalmö UniversitySE 205 06MalmöSweden
| | - Börje Sellergren
- Department of Biomedical Sciences, Faculty of Health and SocietyMalmö UniversitySE 205 06MalmöSweden
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30
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Pan G, Shinde S, Yeung SY, Jakštaitė M, Li Q, Wingren AG, Sellergren B. Inside Back Cover: An Epitope-Imprinted Biointerface with Dynamic Bioactivity for Modulating Cell-Biomaterial Interactions (Angew. Chem. Int. Ed. 50/2017). Angew Chem Int Ed Engl 2017. [DOI: 10.1002/anie.201710972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Guoqing Pan
- Department of Biomedical Sciences, Faculty of Health and Society; Malmö University; SE 205 06 Malmö Sweden
- Institute for Advanced Materials; School of Materials Science and Engineering; Jiangsu University; Zhenjiang Jiangsu 212013 China
| | - Sudhirkumar Shinde
- Department of Biomedical Sciences, Faculty of Health and Society; Malmö University; SE 205 06 Malmö Sweden
| | - Sing Yee Yeung
- Department of Biomedical Sciences, Faculty of Health and Society; Malmö University; SE 205 06 Malmö Sweden
| | - Miglė Jakštaitė
- Department of Biomedical Sciences, Faculty of Health and Society; Malmö University; SE 205 06 Malmö Sweden
| | - Qianjin Li
- Department of Biomedical Sciences, Faculty of Health and Society; Malmö University; SE 205 06 Malmö Sweden
| | - Anette Gjörloff Wingren
- Department of Biomedical Sciences, Faculty of Health and Society; Malmö University; SE 205 06 Malmö Sweden
| | - Börje Sellergren
- Department of Biomedical Sciences, Faculty of Health and Society; Malmö University; SE 205 06 Malmö Sweden
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31
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Pan G, Shinde S, Yeung SY, Jakštaitė M, Li Q, Wingren AG, Sellergren B. Innenrücktitelbild: An Epitope-Imprinted Biointerface with Dynamic Bioactivity for Modulating Cell-Biomaterial Interactions (Angew. Chem. 50/2017). Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201710972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Guoqing Pan
- Department of Biomedical Sciences, Faculty of Health and Society; Malmö University; SE 205 06 Malmö Sweden
- Institute for Advanced Materials; School of Materials Science and Engineering; Jiangsu University; Zhenjiang Jiangsu 212013 China
| | - Sudhirkumar Shinde
- Department of Biomedical Sciences, Faculty of Health and Society; Malmö University; SE 205 06 Malmö Sweden
| | - Sing Yee Yeung
- Department of Biomedical Sciences, Faculty of Health and Society; Malmö University; SE 205 06 Malmö Sweden
| | - Miglė Jakštaitė
- Department of Biomedical Sciences, Faculty of Health and Society; Malmö University; SE 205 06 Malmö Sweden
| | - Qianjin Li
- Department of Biomedical Sciences, Faculty of Health and Society; Malmö University; SE 205 06 Malmö Sweden
| | - Anette Gjörloff Wingren
- Department of Biomedical Sciences, Faculty of Health and Society; Malmö University; SE 205 06 Malmö Sweden
| | - Börje Sellergren
- Department of Biomedical Sciences, Faculty of Health and Society; Malmö University; SE 205 06 Malmö Sweden
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32
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Yeung SY, Mucha A, Deshmukh R, Boutrus M, Arnebrant T, Sellergren B. Reversible Self-Assembled Monolayers (rSAMs): Adaptable Surfaces for Enhanced Multivalent Interactions and Ultrasensitive Virus Detection. ACS Cent Sci 2017; 3:1198-1207. [PMID: 29202022 PMCID: PMC5704293 DOI: 10.1021/acscentsci.7b00412] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Indexed: 05/06/2023]
Abstract
We report on the design of pH-switchable monolayers allowing a reversible and ordered introduction of affinity reagents on sensor surfaces. The principal layer building blocks consist of α-(4-amidinophenoxy)alkanes decorated at the ω-position with affinity ligands. These spontaneously self-assemble on top of carboxylic acid terminated SAMs to form reversible homo or mixed monolayers (rSAMs) that are tunable with respect to the nature of the head group, layer order and stability while featuring pH responsiveness and the dynamic nature of noncovalent build assemblies. We show that this results in a range of unique biosensor features. As a first example a sialic acid rSAM featuring strong lectin affinity is here used to sense hemagglutinin and influenza virus (H5N1) at the pM and fM level by in situ ellipsometry in a fully reversible fashion. We believe that the rSAM concept will find widespread use in surface chemistry and overall for boosting sensitivity in affinity biosensors.
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Affiliation(s)
- Sing Yee Yeung
- Department of Biomedical
Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society, Malmö University, 20506 Malmö, Sweden
| | - Annabell Mucha
- Faculty
of Chemistry, Technical University of Dortmund, Dortmund, 44227 Germany
| | - Ravindra Deshmukh
- Faculty
of Chemistry, Technical University of Dortmund, Dortmund, 44227 Germany
| | - Malak Boutrus
- Faculty
of Chemistry, Technical University of Dortmund, Dortmund, 44227 Germany
| | - Thomas Arnebrant
- Department of Biomedical
Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society, Malmö University, 20506 Malmö, Sweden
| | - Börje Sellergren
- Department of Biomedical
Sciences and Biofilms-Research Center for Biointerfaces (BRCB), Faculty of Health and Society, Malmö University, 20506 Malmö, Sweden
- Faculty
of Chemistry, Technical University of Dortmund, Dortmund, 44227 Germany
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33
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Bllaci L, Torsetnes SB, Wierzbicka C, Shinde S, Sellergren B, Rogowska-Wrzesinska A, Jensen ON. Phosphotyrosine Biased Enrichment of Tryptic Peptides from Cancer Cells by Combining pY-MIP and TiO2 Affinity Resins. Anal Chem 2017; 89:11332-11340. [DOI: 10.1021/acs.analchem.7b02091] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Loreta Bllaci
- Department
of Biochemistry and Molecular Biology and VILLUM Center for Bioanalytical
Sciences, University of Southern Denmark, DK-5230 Odense
M, Denmark
| | - Silje B. Torsetnes
- Department
of Biochemistry and Molecular Biology and VILLUM Center for Bioanalytical
Sciences, University of Southern Denmark, DK-5230 Odense
M, Denmark
| | - Celina Wierzbicka
- Department
of Biomedical Sciences, Malmö University, S-20506 Malmö, Sweden
| | - Sudhirkumar Shinde
- Department
of Biomedical Sciences, Malmö University, S-20506 Malmö, Sweden
| | - Börje Sellergren
- Department
of Biomedical Sciences, Malmö University, S-20506 Malmö, Sweden
| | - Adelina Rogowska-Wrzesinska
- Department
of Biochemistry and Molecular Biology and VILLUM Center for Bioanalytical
Sciences, University of Southern Denmark, DK-5230 Odense
M, Denmark
| | - Ole N. Jensen
- Department
of Biochemistry and Molecular Biology and VILLUM Center for Bioanalytical
Sciences, University of Southern Denmark, DK-5230 Odense
M, Denmark
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34
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Wan W, Descalzo AB, Shinde S, Weißhoff H, Orellana G, Sellergren B, Rurack K. Ratiometric Fluorescence Detection of Phosphorylated Amino Acids Through Excited-State Proton Transfer by Using Molecularly Imprinted Polymer (MIP) Recognition Nanolayers. Chemistry 2017; 23:15974-15983. [PMID: 28869685 DOI: 10.1002/chem.201703041] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [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: 07/02/2017] [Indexed: 12/12/2022]
Abstract
A 2,3-diaminophenazine bis-urea fluorescent probe monomer (1) was developed. It responds to phenylphosphate and phosphorylated amino acids in a ratiometric fashion with enhanced fluorescence accompanied by the development of a redshifted emission band arising from an excited-state proton transfer (ESPT) process in the hydrogen-bonded probe/analyte complex. The two urea groups of 1 form a cleft-like binding pocket (Kb >1010 L2 mol-2 for 1:2 complex). Imprinting of 1 in presence of ethyl ester- and fluorenylmethyloxycarbonyl (Fmoc)-protected phosphorylated tyrosine (Fmoc-pTyr-OEt) as the template, methacrylamide as co-monomer, and ethyleneglycol dimethacrylate as cross-linker gave few-nanometer-thick molecularly imprinted polymer (MIP) shells on silica core microparticles with excellent selectivity for the template in a buffered biphasic assay. The supramolecular recognition features were established by spectroscopic and NMR studies. Rational screening of co-monomers and cross-linkers allowed to single out the best performing MIP components, giving significant imprinting factors (IF>3.5) while retaining ESPT emission and the ratiometric response in the thin polymer shell. Combination of the bead-based detection scheme with the phase-transfer assay dramatically improved the IF to 15.9, allowing sensitive determination of the analyte directly in aqueous media.
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Affiliation(s)
- Wei Wan
- Chemical and Optical Sensing Division, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Strasse 11, 12489, Berlin, Germany
| | - Ana B Descalzo
- Department of Organic Chemistry, Complutense University of Madrid (UCM), 28040, Madrid, Spain
| | - Sudhirkumar Shinde
- Department of Biomedical Science, Malmö University, 20506, Malmö, Sweden
| | - Hardy Weißhoff
- Department of Chemistry, Humboldt University Berlin, Brook-Taylor-Strasse 2, 12489, Berlin, Germany
| | - Guillermo Orellana
- Department of Organic Chemistry, Complutense University of Madrid (UCM), 28040, Madrid, Spain
| | - Börje Sellergren
- Department of Biomedical Science, Malmö University, 20506, Malmö, Sweden
| | - Knut Rurack
- Chemical and Optical Sensing Division, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Strasse 11, 12489, Berlin, Germany
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Pan G, Shinde S, Yeung SY, Jakštaitė M, Li Q, Wingren AG, Sellergren B. An Epitope-Imprinted Biointerface with Dynamic Bioactivity for Modulating Cell-Biomaterial Interactions. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708635] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Guoqing Pan
- Department of Biomedical Sciences, Faculty of Health and Society; Malmö University; SE 205 06 Malmö Sweden
- Institute for Advanced Materials; School of Materials Science and Engineering; Jiangsu University; Zhenjiang Jiangsu 212013 China
| | - Sudhirkumar Shinde
- Department of Biomedical Sciences, Faculty of Health and Society; Malmö University; SE 205 06 Malmö Sweden
| | - Sing Yee Yeung
- Department of Biomedical Sciences, Faculty of Health and Society; Malmö University; SE 205 06 Malmö Sweden
| | - Miglė Jakštaitė
- Department of Biomedical Sciences, Faculty of Health and Society; Malmö University; SE 205 06 Malmö Sweden
| | - Qianjin Li
- Department of Biomedical Sciences, Faculty of Health and Society; Malmö University; SE 205 06 Malmö Sweden
| | - Anette Gjörloff Wingren
- Department of Biomedical Sciences, Faculty of Health and Society; Malmö University; SE 205 06 Malmö Sweden
| | - Börje Sellergren
- Department of Biomedical Sciences, Faculty of Health and Society; Malmö University; SE 205 06 Malmö Sweden
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36
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Chen Z, Sellergren B, Shen X. Synergistic Catalysis by "Polymeric Microzymes and Inorganic Nanozymes": The 1+1>2 Effect for Intramolecular Cyclization of Peptides. Front Chem 2017; 5:60. [PMID: 29018794 PMCID: PMC5622990 DOI: 10.3389/fchem.2017.00060] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [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: 05/29/2017] [Accepted: 08/02/2017] [Indexed: 11/13/2022] Open
Abstract
In this work, we developed an efficient "molecularly imprinted polymer microzymes and inorganic magnetic nanozymes" synergistic catalysis strategy for the formation of disulfide bonds in peptides. The polymeric microzymes showed excellent selectivity toward the template peptide as well as the main reactant (linear peptide), and the Fe3O4 magnetic nanoparticle (MNP) nanozymes inhibited the intermolecular reaction during the formation of disulfide bonds in peptides. As a result, the integration of the two different artificial enzymes in one process facilitates the intramolecular cyclization in high product yields (59.3%) with excellent selectivity. Mechanism study indicates the synergistic effect was occurred by using a "reversed solid phase synthesis" strategy with an enhanced shift of reaction balance to product generation. We believe the synergistic catalysis by "polymeric microzymes and inorganic nanozymes" presented in the present work may open new opportunities in creation of multifunctional enzyme mimics for sensing, imaging, and drug delivery.
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Affiliation(s)
- Zhiliang Chen
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection and State Key Laboratory of Environmental Health (Incubation), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Börje Sellergren
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, Malmö, Sweden
| | - Xiantao Shen
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection and State Key Laboratory of Environmental Health (Incubation), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Liu M, Tran TM, Abbas Elhaj AA, Bøen Torsetnes S, Jensen ON, Sellergren B, Irgum K. Molecularly Imprinted Porous Monolithic Materials from Melamine-Formaldehyde for Selective Trapping of Phosphopeptides. Anal Chem 2017; 89:9491-9501. [PMID: 28795574 DOI: 10.1021/acs.analchem.7b02470] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Thirty-five melamine-formaldehyde (MF) monolithic materials with bimodal pore distributions were synthesized in fused silica capillaries by catalyst-free polycondensation, starting with an aqueous MF precondensate, using acetonitrile as the macroporogen and a variety of aliphatic polyethers and triblock copolymeric surfactants as porogens and mesoporogens, respectively. By varying the prepolymer composition and the type and molecular weight of the polymeric porogen components, a library of porous monolithic materials was produced, covering a range of meso- and macroporous properties. A multivariate evaluation revealed that the amount of surfactant was the strongest contributor to specific surface area and pore volume and to the inversely related mesopore size, whereas the macropore dimensions were controlled mainly by the amount of aliphatic polyether porogen. One of these capillary monoliths, chosen based on the combination of meso- and macropores providing optimal percolative flow and accessible surface area, was synthesized in the presence of N-Fmoc and O-Et protected phosphoserine and phosphotyrosine to prepare molecularly imprinted monoliths with surface layers selective for phosphopeptides. These imprinted monoliths were characterized alongside nonimprinted monoliths by a variety of techniques and finally evaluated by liquid chromatography-mass spectrometry in the capillary format to assess their abilities to trap and release phosphorylated amino acids and peptides from partly aqueous media. Selective enrichment of phosphorylated targets was demonstrated, suggesting that these materials could be useful as trapping media in affinity-based phosphoproteomics.
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Affiliation(s)
- Mingquan Liu
- Umeå University , Department of Chemistry, S-901 87 Umeå, Sweden
| | - Tri Minh Tran
- Umeå University , Department of Chemistry, S-901 87 Umeå, Sweden
| | | | - Silje Bøen Torsetnes
- University of Southern Denmark , Department of Biochemistry & Molecular Biology and VILLUM Center for Bioanalytical Sciences, Campusvej 55, DK-5230 Odense M, Denmark
| | - Ole N Jensen
- University of Southern Denmark , Department of Biochemistry & Molecular Biology and VILLUM Center for Bioanalytical Sciences, Campusvej 55, DK-5230 Odense M, Denmark
| | - Börje Sellergren
- Malmö University , Department of Biomedical Sciences, Faculty of Health and Society, S-205 06 Malmö, Sweden
| | - Knut Irgum
- Umeå University , Department of Chemistry, S-901 87 Umeå, Sweden
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Rossetti C, Ore OG, Sellergren B, Halvorsen TG, Reubsaet L. Exploring the peptide retention mechanism in molecularly imprinted polymers. Anal Bioanal Chem 2017; 409:5631-5643. [PMID: 28752338 DOI: 10.1007/s00216-017-0520-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [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: 04/25/2017] [Revised: 07/09/2017] [Accepted: 07/12/2017] [Indexed: 12/18/2022]
Abstract
Molecularly imprinted polymers (MIPs) have been used as useful sorbents in solid-phase extraction for a wide range of molecules and sample matrices. Their unique selectivity can be fine-tuned in the imprinting process and is crucial for the extraction of macromolecules from complex matrices such as serum. A relevant example of this is the application of MIPs to peptides in diagnostic assays. In this article the selectivity of MIPs, previously implemented in a quantitative mass-spectrometric assay for the biomarker pro-gastrin-releasing peptide, is investigated. Partial least squares regression was used to generate models for the evaluation and prediction of the retention mechanism of MIPs. A hypothesis on interactions of MIPs with the target peptide was verified by ad hoc experiments considering the relevant peptide physicochemical properties highlighted from the multivariate analysis. Novel insights into and knowledge of the driving forces responsible for the MIP selectivity have been obtained and can be directly used for further optimization of MIP imprinting strategies. Graphical Abstract Applied analytical strategy: the Solid Phase Extraction (SPE) of digested Bovin Serum Albumin (BSA), using Molecularly Imprinted Polymers (MIP), is followed by the liquid chromatography-mass spectrometry (LC-MS) analysis for the identification of the retained peptides. The further application of multivariate analysis allows setting up a Partial Least Square (PLS) model, which describes the peptide retention into the MIP and gives additional knowledge to be used in the optimization of the MIP and the whole SPE method.
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Affiliation(s)
- Cecilia Rossetti
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, P.O. Box 1068, Blindern, 0316, Oslo, Norway
| | - Odd Gøran Ore
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, P.O. Box 1068, Blindern, 0316, Oslo, Norway
| | - Börje Sellergren
- Department of Biomedical Sciences, Faculty of Health and Society, University of Malmö, 20506, Malmö, Sweden
| | - Trine Grønhaug Halvorsen
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, P.O. Box 1068, Blindern, 0316, Oslo, Norway
| | - Léon Reubsaet
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, P.O. Box 1068, Blindern, 0316, Oslo, Norway.
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Jagadeesan KK, Rossetti C, Abdel Qader A, Reubsaet L, Sellergren B, Laurell T, Ekström S. Filter Plate-Based Screening of MIP SPE Materials for Capture of the Biomarker Pro-Gastrin-Releasing Peptide. SLAS Discov 2017; 22:1253-1261. [PMID: 28346098 DOI: 10.1177/2472555216689494] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Affinity-based solid-phase extraction (SPE) is an attractive low-cost sample preparation strategy for biomarker analysis. Molecularly imprinted polymers (MIPs) as affinity sorbents offer unique opportunities for affinity SPE, due to their low manufacturing cost and high robustness. A limitation is the prediction of their affinity; therefore, screening of analyte recovery and specificity within a large range of SPE conditions is important in order to ensure high-sensitivity detection and assay reproducibility. Here, a µ-SPE method for screening of the MIP-SPE materials using a commercial 384-well filter plate is presented. The method allows for rapid and automated screening using 10-30 µL of packed SPE sorbent per well and sample volumes in the range of 10-70 µL. This enables screening of many different SPE sorbents while simultaneously identifying optimal SPE conditions. In addition, the 384-well format also facilitates detection with a multitude of analytical platforms. Performance of the µ-MIP-SPE method was investigated using a series of MIPs designed to capture pro-gastrin-releasing peptide (ProGRP). Fractions coming from sample load, cartridge wash, and elution were collected and analyzed using mass spectrometry (MS). The top-performing MIPs were identified, together with proper SPE conditions.
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Affiliation(s)
| | - Cecilia Rossetti
- 2 Department of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, Oslo, Norway
| | - Abed Abdel Qader
- 3 Department of Environmental Chemistry and Analytical Chemistry, Institute for Environmental Research (INFU), Technical University of Dortmund, Dortmund, Germany
| | - Léon Reubsaet
- 2 Department of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, Oslo, Norway
| | - Börje Sellergren
- 4 Department of Biomedical Sciences, Faculty of Health and Society, University of Malmö, Malmö, Sweden
| | - Thomas Laurell
- 1 Department of Biomedical Engineering, Lund University, Lund, Sweden
| | - Simon Ekström
- 1 Department of Biomedical Engineering, Lund University, Lund, Sweden
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Sulc R, Szekely G, Shinde S, Wierzbicka C, Vilela F, Bauer D, Sellergren B. Phospholipid imprinted polymers as selective endotoxin scavengers. Sci Rep 2017; 7:44299. [PMID: 28303896 PMCID: PMC5358689 DOI: 10.1038/srep44299] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Accepted: 02/07/2017] [Indexed: 11/23/2022] Open
Abstract
Herein we explore phospholipid imprinting as a means to design receptors for complex glycolipids comprising the toxic lipopolysaccharide endotoxin. A series of polymerizable bis-imidazolium and urea hosts were evaluated as cationic and neutral hosts for phosphates and phosphonates, the latter used as mimics of the phospholipid head groups. The bis-imidazolium hosts interacted with the guests in a cooperative manner leading to the presence of tight and well defined 1:2 ternary complexes. Optimized monomer combinations were subsequently used for imprinting of phosphatidic acid as an endotoxin dummy template. Presence of the aforementioned ternary complexes during polymerization resulted in imprinting of lipid dimers - the latter believed to crudely mimic the endotoxin Lipid A motif. The polymers were characterized with respect to template rebinding, binding affinity, capacity and common structural properties, leading to the identification of polymers which were thereafter subjected to an industrially validated endotoxin removal test. Two of the polymers were capable of removing endotoxin down to levels well below the accepted threshold (0.005 EU/mg API) in pharmaceutical production.
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Affiliation(s)
- Robert Sulc
- Faculty of Chemistry, Technical University of Dortmund, Germany
| | - Gyorgy Szekely
- Faculty of Chemistry, Technical University of Dortmund, Germany
- Hovione FarmaCiencia SA, R&D, Lisbon, Portugal
| | - Sudhirkumar Shinde
- Faculty of Chemistry, Technical University of Dortmund, Germany
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, Malmö, Sweden
| | - Celina Wierzbicka
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, Malmö, Sweden
| | - Filipe Vilela
- Faculty of Chemistry, Technical University of Dortmund, Germany
| | - David Bauer
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, Malmö, Sweden
| | - Börje Sellergren
- Faculty of Chemistry, Technical University of Dortmund, Germany
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, Malmö, Sweden
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Wierzbicka C, Torsetnes SB, Jensen ON, Shinde S, Sellergren B. Hierarchically templated beads with tailored pore structure for phosphopeptide capture and phosphoproteomics. RSC Adv 2017. [DOI: 10.1039/c7ra00385d] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Phosphotyrosine selective beads prepared by polymer templating at two length scales results in improved capture of larger sized peptide fragments from tryptic protein digests.
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Affiliation(s)
- Celina Wierzbicka
- Department of Biomedical Sciences
- Faculty of Health and Society
- Malmö University
- SE 205 06 Malmö
- Sweden
| | - Silje B. Torsetnes
- Department of Biochemistry and Molecular Biology and VILLUM Center for Bioanalytical Sciences
- University of Southern Denmark
- DK-5230 Odense M
- Denmark
| | - Ole N. Jensen
- Department of Biochemistry and Molecular Biology and VILLUM Center for Bioanalytical Sciences
- University of Southern Denmark
- DK-5230 Odense M
- Denmark
| | - Sudhirkumar Shinde
- Department of Biomedical Sciences
- Faculty of Health and Society
- Malmö University
- SE 205 06 Malmö
- Sweden
| | - Börje Sellergren
- Department of Biomedical Sciences
- Faculty of Health and Society
- Malmö University
- SE 205 06 Malmö
- Sweden
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Wierzbicka C, Liu M, Bauer D, Irgum K, Sellergren B. Cationic pTyr/pSer imprinted polymers based on a bis-imidazolium host monomer: phosphopeptide recognition in aqueous buffers demonstrated by μ-liquid chromatography and monolithic columns. J Mater Chem B 2017; 5:953-960. [DOI: 10.1039/c6tb02864k] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Capillary monoliths featuring grafted molecularly imprinted polymer films incorporating on a bis-imidazolium host monomer, displayed a remarkable crossreactivity with phosphorylated peptides in buffered media.
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Affiliation(s)
- Celina Wierzbicka
- Department of Biomedical Sciences
- Faculty of Health and Society
- Malmö University
- Malmö
- Sweden
| | - Mingquan Liu
- Department of Chemistry
- Umeå University
- 901 87 Umeå
- Sweden
| | - David Bauer
- Department of Biomedical Sciences
- Faculty of Health and Society
- Malmö University
- Malmö
- Sweden
| | - Knut Irgum
- Department of Chemistry
- Umeå University
- 901 87 Umeå
- Sweden
| | - Börje Sellergren
- Department of Biomedical Sciences
- Faculty of Health and Society
- Malmö University
- Malmö
- Sweden
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Shen X, Huang C, Shinde S, Jagadeesan KK, Ekström S, Fritz E, Sellergren B. Catalytic Formation of Disulfide Bonds in Peptides by Molecularly Imprinted Microgels at Oil/Water Interfaces. ACS Appl Mater Interfaces 2016; 8:30484-30491. [PMID: 27750005 DOI: 10.1021/acsami.6b10131] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This work describes the preparation and investigation of molecularly imprinted polymer (MIP) microgel (MG) stabilized Pickering emulsions (PEs) for their ability to catalyze the formation of disulfide bonds in peptides at the O/W interface. The MIP MGs were synthesized via precipitation polymerization and a programmed initiator change strategy. The MIP MGs were characterized using DLS analysis, SEM measurement, and optical microscopy analysis. The dry and wet MIP MGs showed a hydrodynamic diameter of 100 and 280 nm, respectively. A template rebinding experiment showed that the MIP MGs bound over two times more template (24 mg g-1) compared to the uptake displayed by a nonimprinted reference polymer (NIP) MG (10 mg g-1) at saturation. Using the MIP MGs as stabilizers, catalytic oxidation systems were prepared by emulsifying the oil phase and water phase in the presence of different oxidizing agents. During the cyclization, the isolation of the thiol precursors and the oxidizing reagents nonselectively decreased the formation of the byproducts, while the imprinted cavities on the MIP MGs selectively promoted the intramolecular cyclization of peptides. When I2 was used as the oxidizing agent, the MIP-PE-I2 system showed a product yield of 50%, corresponding to a nearly 2-fold increase compared to that of the nonimprinted polymer NIP-PE-I2 system (26%). We believe the interfacial catalysis system presented in this work may offer significant benefits in synthetic peptide chemistry by raising productivity while suppressing the formation of byproducts.
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Affiliation(s)
- Xiantao Shen
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental Health (Incubation), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology , Hangkong Road #13, Wuhan, Hubei 430030, China
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University , SE20506 Malmö, Sweden
- G&T Septech AS , P.O. Box 33, 1917 Ytre Enebakk, Norway
| | - Chuixiu Huang
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University , SE20506 Malmö, Sweden
- School of Pharmacy, University of Oslo , P.O. Box 1068, 0316 Blindern Oslo, Norway
- G&T Septech AS , P.O. Box 33, 1917 Ytre Enebakk, Norway
| | - Sudhirkumar Shinde
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University , SE20506 Malmö, Sweden
| | | | - Simon Ekström
- Department of Biomedical Engineering, Lund University , 221 00 Lund, Sweden
| | - Emelie Fritz
- INFU, Technische Universität Dortmund , 44221 Dortmund, Germany
| | - Börje Sellergren
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University , SE20506 Malmö, Sweden
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Wang J, Qiu H, Shen H, Pan J, Dai X, Yan Y, Pan G, Sellergren B. Molecularly imprinted fluorescent hollow nanoparticles as sensors for rapid and efficient detection λ-cyhalothrin in environmental water. Biosens Bioelectron 2016; 85:387-394. [DOI: 10.1016/j.bios.2016.05.041] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 05/03/2016] [Accepted: 05/12/2016] [Indexed: 11/27/2022]
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Chen J, Shinde S, Subedi P, Wierzbicka C, Sellergren B, Helling S, Marcus K. Validation of molecularly imprinted polymers for side chain selective phosphopeptide enrichment. J Chromatogr A 2016; 1471:45-50. [DOI: 10.1016/j.chroma.2016.10.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 09/12/2016] [Accepted: 10/08/2016] [Indexed: 01/13/2023]
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El-Schich Z, Abdullah M, Shinde S, Dizeyi N, Rosén A, Sellergren B, Wingren AG. Different expression levels of glycans on leukemic cells-a novel screening method with molecularly imprinted polymers (MIP) targeting sialic acid. Tumour Biol 2016; 37:13763-13768. [PMID: 27476172 PMCID: PMC5097081 DOI: 10.1007/s13277-016-5280-y] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 07/15/2016] [Indexed: 12/15/2022] Open
Abstract
Sialic acid (SA) is normally expressed on the cell membranes and is located at the terminal position of the sugar chains. SA plays an important role for regulation of the innate immunity, function as markers of the cells and can be recognized by a variety of receptors. Interestingly, the level of SA expression is increased on metastatic cancer cells. The availability of specific antibodies against SA is limited and, therefore, biomarker tools for detection of SA are lacking. We have recently presented a novel method for specific fluorescence labeling of SA molecular imprinted polymers (MIP). Here, we have performed an extended screening of SA expression by using SA-MIP and included four different chronic lymphocytic leukemia (CLL) cell lines, conveniently analyzed by flow cytometry and fluorescence microscopy. SA expression was detected in four cell lines at different levels, and the SA expression were verified with lectin-FITC. These results show that SA-MIP can be used as a plastic antibody for detection of SA using both flow cytometry and fluorescence microscopy. We suggest that SA-MIP can be used for screening of different tumor cells of various stages, including CLL cells.
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Affiliation(s)
- Zahra El-Schich
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, Malmö, Sweden.
| | - Mohammad Abdullah
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, Malmö, Sweden
| | - Sudhirkumar Shinde
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, Malmö, Sweden
| | - Nishtman Dizeyi
- Department of Translational Medicine, Lund University, Malmö, Sweden
| | - Anders Rosén
- Department of Clinical and Experimental Medicine, Division of Cell Biology, Linköping University, Linköping, Sweden
| | - Börje Sellergren
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, Malmö, Sweden
| | - Anette Gjörloff Wingren
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, Malmö, Sweden
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47
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Shen X, Huang C, Shinde S, Switnicka-Plak M, Cormack PAG, Sellergren B. Reflux precipitation polymerization: a new synthetic insight in molecular imprinting at high temperature. RSC Adv 2016. [DOI: 10.1039/c6ra15990g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Reflux precipitation polymerization was first used to fabricate monodispersed MIP microspheres, indicating electrostatic interaction was important for molecular imprinting at high temperature.
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Affiliation(s)
- Xiantao Shen
- Key Laboratory of Environment and Health
- Ministry of Education & Ministry of Environmental Protection
- State Key Laboratory of Environmental Health (Incubation)
- School of Public Health
- Tongji Medical College
| | - Chuixiu Huang
- Department of Biomedical Sciences
- Faculty of Health and Society
- Malmö University
- SE20506 Malmö
- Sweden
| | - Sudhirkumar Shinde
- Department of Biomedical Sciences
- Faculty of Health and Society
- Malmö University
- SE20506 Malmö
- Sweden
| | | | | | - Börje Sellergren
- Department of Biomedical Sciences
- Faculty of Health and Society
- Malmö University
- SE20506 Malmö
- Sweden
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Schwark S, Sun W, Stute J, Lütkemeyer D, Ulbricht M, Sellergren B. Monoclonal antibody capture from cell culture supernatants using epitope imprinted macroporous membranes. RSC Adv 2016. [DOI: 10.1039/c6ra06632a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A straightforward epitope imprinting procedure is used to prepare IgG affinity membranes directly applicable to mAb capture under near process realistic conditions.
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Affiliation(s)
- Sebastian Schwark
- Lehrstuhl für Technische Chemie II
- Universität Duisburg-Essen
- Essen
- Germany
| | - Wei Sun
- Faculty of Chemistry
- Technical University of Dortmund
- Germany
| | | | | | - Mathias Ulbricht
- Lehrstuhl für Technische Chemie II
- Universität Duisburg-Essen
- Essen
- Germany
| | - Börje Sellergren
- Faculty of Chemistry
- Technical University of Dortmund
- Germany
- Department of Biomedical Sciences
- Faculty of Health and Society
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Kadhirvel P, Azenha M, Gomes P, Silva AF, Sellergren B. Aminoglutethimide-imprinted xerogels in bulk and spherical formats, based on a multifunctional organo-alkoxysilane precursor. J Chromatogr A 2015; 1424:59-68. [PMID: 26589944 DOI: 10.1016/j.chroma.2015.10.097] [Citation(s) in RCA: 2] [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] [Received: 07/23/2015] [Revised: 10/26/2015] [Accepted: 10/27/2015] [Indexed: 11/18/2022]
Abstract
The multifunctional alkoxysilane precursor, 2,6-bis(propyl-trimethoxysilylurelene)pyridine (DPS) was designed and synthesized, envisaging a multiple hydrogen-bond interaction in the molecular imprinting of the drug aminoglutethimide (AGT). Imprinted xerogels were obtained in bulk and spherical formats. The spherical format was achieved by pore-filling onto spherical mesoporous silica, as a straightforward technique to generate the spherical format. The bulk gels presented better selectivity for the template against its glutarimide (GLU) analogue (selectivity factor: bulk 13.4; spherical 4.6), and good capacity (bulk 5521μmol/L; spherical 2679μmol/L) and imprinting factor parameters (bulk 11.3; spherical 1.4). On the other hand, the microspherical format exhibited better dynamic properties associated to chromatographic efficiency (theoretical plates: bulk 6.8; spherical 75) and mass transfer, due mainly to the existence of a mesoporous network, lacking in the bulk material. The performance of the imprinted xerogels was not as remarkable as that of their acrylic counterparts, previously described. Overall it was demonstrated that the use of designed new "breeds" of organo-alkoxysilanes may be a strategy to achieve satisfactory imprints by the sol-gel processes. DPS may in principle be applied even more effectively to other templates bearing better-matching spatially compatible acceptor-donor-acceptor arrays.
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Affiliation(s)
- Porkodi Kadhirvel
- CIQ-UP, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Portugal.
| | - Manuel Azenha
- CIQ-UP, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Portugal.
| | - Paula Gomes
- CIQ-UP, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Portugal
| | - António F Silva
- CIQ-UP, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Portugal
| | - Börje Sellergren
- INFU, Faculty of Chemistry, Technical University of Dortmund, Otto-Hahn-Str.6, D-44221, Dortmund, Germany; Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, SE 20506 Malmö, Sweden
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50
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Shinde S, El-Schich Z, Malakpour-Permlid A, Wan W, Dizeyi N, Mohammadi R, Rurack K, Gjörloff Wingren A, Sellergren B. Sialic Acid-Imprinted Fluorescent Core-Shell Particles for Selective Labeling of Cell Surface Glycans. J Am Chem Soc 2015; 137:13908-12. [PMID: 26414878 DOI: 10.1021/jacs.5b08482] [Citation(s) in RCA: 169] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The expression of cell surface glycans terminating with sialic acid (SA) residues has been found to correlate with various disease states there among cancer. We here report a novel strategy for specific fluorescence labeling of such motifs. This is based on sialic acid-imprinted core-shell nanoparticles equipped with nitrobenzoxadiazole (NBD) fluorescent reporter groups allowing environmentally sensitive fluorescence detection at convenient excitation and emission wavelengths. Imprinting was achieved exploiting a hybrid approach combining reversible boronate ester formation between p-vinylphenylboronic acid and SA, the introduction of cationic amine functionalities, and the use of an NBD-appended urea-monomer as a binary hydrogen-bond donor targeting the SA carboxylic acid and OH functionalities. The monomers were grafted from 200 nm RAFT-modified silica core particles using ethylene glycol dimethacrylate (EGDMA) as cross-linker resulting in a shell thickness of ca. 10 nm. The particles displayed strong affinity for SA in methanol/water mixtures (K = 6.6 × 10(5) M(-1) in 2% water, 5.9 × 10(3) M(-1) in 98% water, B(max) ≈ 10 μmol g(-1)), whereas binding of the competitor glucuronic acid (GA) and other monosaccharides was considerably weaker (K (GA) = 1.8 × 10(3) M(-1) in 98% water). In cell imaging experiments, the particles selectively stained different cell lines in correlation with the SA expression level. This was further verified by enzymatic cleavage of SA and by staining using a FITC labeled SA selective lectin.
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Affiliation(s)
- Sudhirkumar Shinde
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University , SE-20506 Malmö, Sweden
| | - Zahra El-Schich
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University , SE-20506 Malmö, Sweden
| | - Atena Malakpour-Permlid
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University , SE-20506 Malmö, Sweden
| | - Wei Wan
- Chemical and Optical Sensing Division, Federal Institute for Materials Research and Testing (BAM) , 12200 Berlin, Germany
| | - Nishtman Dizeyi
- Department of Translational Medicine, Lund University , SE-20502 Malmö, Sweden
| | - Reza Mohammadi
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University , SE-20506 Malmö, Sweden
| | - Knut Rurack
- Chemical and Optical Sensing Division, Federal Institute for Materials Research and Testing (BAM) , 12200 Berlin, Germany
| | - Anette Gjörloff Wingren
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University , SE-20506 Malmö, Sweden
| | - Börje Sellergren
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University , SE-20506 Malmö, Sweden
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