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Lyons S, Baile Pomares P, Vidal L, McGarry K, Morrin A, Brougham DF. Surface Potential Modulation in Boronate-Functionalized Magnetic Nanoparticles Reveals Binding Interactions: Toward Magnetophoretic Capture/Quantitation of Sugars from Extracellular Matrix. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023. [PMID: 37235552 DOI: 10.1021/acs.langmuir.3c00462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Phenylboronic acids (BAs) are important synthetic receptors that bind reversibly to cis-diols enabling their use in molecular sensing. When conjugated to magnetic iron oxide nanoparticles, BAs have potential for application in separations and enrichment. Realizing this will require a new understanding of their inherent binding modes and measurement of their binding capacity and their stability in/extractability from complex environments. In this work, 3-aminophenylboronic acid was functionalized to superparamagnetic iron oxide nanoparticles (MNPs, core diameter 8.9 nm) to provide stable aqueous suspensions of functionalized particles (BA-MNPs). The progress of sugar binding and its impact on BA-MNP colloidal stability were monitored through the pH-dependence of hydrodynamic size and zeta potential during incubation with a range of saccharides. This provided the first direct observation of boronate ionization pKa in grafted BA, which in the absence of sugar shifted to a slightly more basic pH than free BA. On exposure to sugar solutions under MNP-limiting conditions, pKa moved progressively to lower pH as maximum capacity was gradually attained. The pKa shift is shown to be greater for sugars with greater BA binding affinity, and on-particle sugar exchange effects were inferred. Colloidal dispersion of BA-MNPs after binding was shown for all sugars at all pHs studied, which enabled facile magnetic extraction of glucose from agarose and cultured extracellular matrix expanded in serum-free media. Bound glucose, quantified following magnetophoretic capture, was found to be proportional to the solution glucose content under glucose-limiting conditions expected for the application. The implications for the development of MNP-immobilized ligands for selective magnetic biomarker capture and quantitation from the extracellular environment are discussed.
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Affiliation(s)
- Stephen Lyons
- SFI Insight Centre for Data Analytics; National Centre for Sensor Research; School of Chemical Sciences, Dublin City University, Dublin 9, Ireland
| | - Paola Baile Pomares
- Departamento de Química Analítica, Nutrición y Bromatología, Instituto Universitario de Materiales, Universidad de Alicante, PO Box 99, 03080 Alicante, Spain
| | - Lorena Vidal
- Departamento de Química Analítica, Nutrición y Bromatología, Instituto Universitario de Materiales, Universidad de Alicante, PO Box 99, 03080 Alicante, Spain
| | - Katie McGarry
- School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Aoife Morrin
- SFI Insight Centre for Data Analytics; National Centre for Sensor Research; School of Chemical Sciences, Dublin City University, Dublin 9, Ireland
| | - Dermot F Brougham
- School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
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Law JKC, Ng WM, Chong WH, Li Q, Zhang L, Khoerunnisa F, Lim J. Low-Gradient Magnetophoresis of Nanospheres and Nanorods through a Single Layer of Paper. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:4904-4916. [PMID: 36992604 DOI: 10.1021/acs.langmuir.2c03164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
The possible magnetophoretic migration of iron oxide nanoparticles through the cellulosic matrix within a single layer of paper is challenging with its underlying mechanism remained unclear. Even with the recent advancements of theoretical understanding on magnetophoresis, mainly driven by cooperative and hydrodynamics phenomena, the contributions of these two mechanisms on possible penetration of magnetic nanoparticles through cellulosic matrix of paper have yet been proven. Here, by using iron oxide nanoparticles (IONPs), both nanospheres and nanorods, we have investigated the migration kinetics of these nanoparticles through grade 4 Whatman filter paper with a particle retention of 20-25 μm. By performing droplet tracking experiments, the real-time stained area growth of the particle droplet on the filter paper, under the influences of a grade N40 NdFeB magnet, were recorded. Our results show that the spatial and temporal expansion of the IONP stain is biased toward the magnet and such an effect is dependent on (i) particle concentration and (ii) particle shape. The kinetics data were first analyzed by treating it as a radial wicking fluid, and later the IONP distribution within the cellulosic matrix was investigated by optical microscopy. The macroscopic flow front velocities of the stained area ranged from 259 μm/s to 16 040 μm/s. Moreover, the microscopic magnetophoretic velocity of nanorod cluster was also successfully measured as ∼214 μm/s. Findings in this work have indirectly revealed the strong influence of cooperative magnetophoresis and the engineering feasibility of paper-based magnetophoretic technology by taking advantage of magnetoshape anisotropy effect of the particles.
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Affiliation(s)
- James Kah Chun Law
- School of Chemical Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia
| | - Wei Ming Ng
- School of Chemical Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia
| | - Wai Hong Chong
- School of Chemical Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia
| | - Qingsi Li
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), Tianjin University, Tianjin 300350, China
| | - Lei Zhang
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), Tianjin University, Tianjin 300350, China
| | - Fitri Khoerunnisa
- Department of Chemistry, Indonesia University of Education, 40154 Bandung, Indonesia
| | - JitKang Lim
- School of Chemical Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia
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Hussain SI, Mair LO, Willis AJ, Papavasiliou G, Liu B, Weinberg IN, Engelhard HH. Parallel Multichannel Assessment of Rotationally Manipulated Magnetic Nanoparticles. Nanotechnol Sci Appl 2022; 15:1-15. [PMID: 35469141 PMCID: PMC9034901 DOI: 10.2147/nsa.s358931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 03/25/2022] [Indexed: 12/03/2022] Open
Abstract
Background Rotational manipulation of chains or clusters of magnetic nanoparticles (MNPs) offers a means for directed translation and payload delivery that should be explored for clinical use. Multiple MNP types are available, yet few studies have performed side-by-side comparisons to evaluate characteristics such as velocity, movement at a distance, and capacity for drug conveyance or dispersion. Purpose Our goal was to design, build, and study an electric device allowing simultaneous, multichannel testing (e.g., racing) of MNPs in response to a rotating magnetic field. We would then select the "best" MNP and use it with optimized device settings, to transport an unbound therapeutic agent. Methods A magnetomotive system was constructed, with a Helmholtz pair of coils on either side of a single perpendicular coil, on top of which was placed an acrylic tray having multiple parallel lanes. Five different MNPs were tested: graphene-coated cobalt MNPs (TurboBeads™), nickel nanorods, gold-iron alloy MNPs, gold-coated Fe3O4 MNPs, and uncoated Fe3O4 MNPs. Velocities were determined in response to varying magnetic field frequencies (5-200 Hz) and heights (0-18 cm). Velocities were normalized to account for minor lane differences. Doxorubicin was chosen as the therapeutic agent, assayed using a CLARIOstar Plus microplate reader. Results The MMS generated a maximal MNP velocity of 0.9 cm/s. All MNPs encountered a "critical" frequency at 20-30 Hz. Nickel nanorods had the optimal response based on tray height and were then shown to enable unbound doxorubicin dispersion along 10.5 cm in <30 sec. Conclusion A rotating magnetic field can be conveniently generated using a three-coil electromagnetic device, and used to induce rotational and translational movement of MNP aggregates over mesoscale distances. The responses of various MNPs can be compared side-by-side using multichannel acrylic trays to assess suitability for drug delivery, highlighting their potential for further in vivo applications.
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Affiliation(s)
- Syed I Hussain
- Department of Neurosurgery, The University of Illinois at Chicago, Chicago, IL, USA
- Biomedical Engineering Department, Illinois Institute of Technology, Chicago, IL, USA
- NanoMagnetic Therapeutics Corp., Wilmette, IL, USA
| | - Lamar O Mair
- Weinberg Medical Physics, Inc., North Bethesda, MD, USA
| | - Alexander J Willis
- Department of Medicine, The University of Illinois at Chicago, Chicago, IL, USA
| | - Georgia Papavasiliou
- Biomedical Engineering Department, Illinois Institute of Technology, Chicago, IL, USA
| | - Bing Liu
- IMRA America, Inc., Ann Arbor, MI, USA
| | | | - Herbert H Engelhard
- Department of Neurosurgery, The University of Illinois at Chicago, Chicago, IL, USA
- NanoMagnetic Therapeutics Corp., Wilmette, IL, USA
- Department of Bioengineering, The University of Illinois at Chicago, Chicago, IL, USA
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Willis AJ, Pernal SP, Gaertner ZA, Lakka SS, Sabo ME, Creighton FM, Engelhard HH. Rotating Magnetic Nanoparticle Clusters as Microdevices for Drug Delivery. Int J Nanomedicine 2020; 15:4105-4123. [PMID: 32606667 PMCID: PMC7295537 DOI: 10.2147/ijn.s247985] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Accepted: 05/06/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Magnetic nanoparticles (MNPs) hold promise for enhancing delivery of therapeutic agents, either through direct binding or by functioning as miniature propellers. Fluid-filled conduits and reservoirs within the body offer avenues for MNP-enhanced drug delivery. MNP clusters can be rotated and moved across surfaces at clinically relevant distances in response to a rotating magnet. Limited data are available regarding issues affecting MNP delivery by this mechanism, such as adhesion to a cellular wall. Research reported here was initiated to better understand the fundamental principles important for successful implementation of rotational magnetic drug targeting (rMDT). METHODS Translational movements of four different iron oxide MNPs were tested, in response to rotation (3 Hz) of a neodymium-boron-iron permanent magnet. MNP clusters moved along biomimetic channels of a custom-made acrylic tray, by surface walking. The effects of different distances and cellular coatings on MNP velocity were analyzed using videography. Dyes (as drug surrogates) and the drug etoposide were transported by rotating MNPs along channels over a 10 cm distance. RESULTS MNP translational velocities could be predicted from magnetic separation times. Changes in distance or orientation from the magnet produced alterations in MNP velocities. Mean velocities of the fastest MNPs over HeLa, U251, U87, and E297 cells were 0.24 ± 0.02, 0.26 ± 0.02, 0.28 ± 0.01, and 0.18 ± 0.03 cm/sec, respectively. U138 cells showed marked MNP adherence and an 87.1% velocity reduction at 5.5 cm along the channel. Dye delivery helped visualize the effects of MNPs as microdevices for drug delivery. Dye delivery by MNP clusters was 21.7 times faster than by diffusion. MNPs successfully accelerated etoposide delivery, with retention of chemotherapeutic effect. CONCLUSION The in vitro system described here facilitates side-by-side comparisons of drug delivery by rotating MNP clusters, on a human scale. Such microdevices have the potential for augmenting drug delivery in a variety of clinical settings, as proposed.
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Affiliation(s)
- Alexander J Willis
- Division of Hematology-Oncology, Department of Medicine, The University of Illinois at Chicago, Chicago, IL, USA
| | | | | | - Sajani S Lakka
- Division of Hematology-Oncology, Department of Medicine, The University of Illinois at Chicago, Chicago, IL, USA
| | | | | | - Herbert H Engelhard
- Departments of Neurosurgery and Bioengineering, The University of Illinois at Chicago, Chicago, IL, USA
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Mair LO, Hale O, Jafari S, Chen C, Udalov O, Probst R, Baum I, Hevaganinge A, Yi Wang E, Rodriguez OC, Albanese C, Fricke ST, Weinberg IN. Magnetic Microdevices for MRI-Based Detection of SARS-CoV-2 Viruses. IEEE OPEN JOURNAL OF ENGINEERING IN MEDICINE AND BIOLOGY 2020; 1:265-267. [PMID: 33748768 PMCID: PMC7978173 DOI: 10.1109/ojemb.2020.3026234] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Goal: To develop a micron-scale device that can operate as an MRI-based reporter for the presence of SARS-CoV-2 virus. Methods: Iron rod microdevices were constructed via template-guided synthesis and suspended in phosphate buffered saline (PBS). Heat-inactivated SARS-CoV-2 viruses were added to the samples and imaged with low-field MRI. Results: MRI of microdevices and viruses showed decreased signal intensity at low concentrations of viruses that recovered at higher concentrations. Electron micrographs suggest that reduced MRI intensity may be due to concentration-dependent shielding of water protons from local magnetic inhomogeneities caused by the iron microdevices. Conclusions: The preliminary results presented in this letter provide justification for further studies exploring the potential diagnostic role of magnetic microdevices in assessing the presence and concentration of SARS-CoV-2 viruses.
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Affiliation(s)
- Lamar O Mair
- Neuroparticle Corporation, North Bethesda, MD, USA
| | - Olivia Hale
- Neuroparticle Corporation, North Bethesda, MD, USA
| | - Sahar Jafari
- Weinberg are with Shape Theranostics, Inc. and Weinberg Medical Physics, Inc., North Bethesda, MD, USA
| | - Cheng Chen
- Neuroparticle Corporation, North Bethesda, MD, USA
| | - Oleg Udalov
- Neuroparticle Corporation, North Bethesda, MD, USA
| | | | - Ittai Baum
- Neuroparticle Corporation, North Bethesda, MD, USA
| | | | | | | | | | | | - Irving N Weinberg
- Weinberg are with Shape Theranostics, Inc. and Weinberg Medical Physics, Inc., North Bethesda, MD, USA
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