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Liu C, Liu J, Chen Y, Jiang D, Lin H, Cao L, Wang K, Sui J. Efficient Hapten-Specific Biopanning Strategy Based on the Fe 3O 4@ENR-Functionalized Core-Shell Magnetic Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:14586-14594. [PMID: 37792480 DOI: 10.1021/acs.langmuir.3c01803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/06/2023]
Abstract
The biopanning of target-specific phages is one of the most critical steps in the preparation of single-domain antibodies. In the traditional biopanning of haptens, the nonspecific binding of library phages to macromolecular proteins is one of the most challenging problems in preparing single-domain antibodies. In this research, Fe3O4@ENR-functionalized core-shell magnetic nanoparticles (FMNPs) were silylated and aminated by tetraethyl orthosilicate and (3-aminopropyl)triethoxysilane, and target enrofloxacin was coupled onto the surface by the carbodiimide method. The magnetic nanoparticles were characterized by Fourier transform infrared spectroscopy, particle size distribution, zeta potential, transmission electron microscopy observation, and indirect enzyme-linked immunosorbent assay (ELISA). A biopanning strategy based on Fe3O4@ENR FMNPs was then established to solve the problem in the traditional solid-phase biopanning process. The results showed that a considerable number of enrofloxacin (ENR)-positive phages were screened by only one round of biopanning. Finally, two ENR-specific shark-derived single-domain genes were identified and validated by monoclonal phage ELISA, gene sequencing, and biolayer interferometry technology. Our study provides a new biopanning strategy based on Fe3O4@ENR FMNPs for efficiently providing phages specific to haptens.
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Affiliation(s)
- Chang Liu
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong 266404, China
| | - Jiahui Liu
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong 266404, China
| | - Yuan Chen
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong 266404, China
| | - Difei Jiang
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong 266404, China
| | - Hong Lin
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong 266404, China
| | - Limin Cao
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong 266404, China
| | - Kaiqiang Wang
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong 266404, China
| | - Jianxin Sui
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong 266404, China
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2
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Abstract
Magnetic cell separation has become a key methodology for the isolation of target cell populations from biological suspensions, covering a wide spectrum of applications from diagnosis and therapy in biomedicine to environmental applications or fundamental research in biology. There now exists a great variety of commercially available separation instruments and reagents, which has permitted rapid dissemination of the technology. However, there is still an increasing demand for new tools and protocols which provide improved selectivity, yield and sensitivity of the separation process while reducing cost and providing a faster response. This review aims to introduce basic principles of magnetic cell separation for the neophyte, while giving an overview of recent research in the field, from the development of new cell labeling strategies to the design of integrated microfluidic cell sorters and of point-of-care platforms combining cell selection, capture, and downstream detection. Finally, we focus on clinical, industrial and environmental applications where magnetic cell separation strategies are amongst the most promising techniques to address the challenges of isolating rare cells.
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3
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Tajti G, Szanto TG, Csoti A, Racz G, Evaristo C, Hajdu P, Panyi G. Immunomagnetic separation is a suitable method for electrophysiology and ion channel pharmacology studies on T cells. Channels (Austin) 2021; 15:53-66. [PMID: 33356811 PMCID: PMC7781520 DOI: 10.1080/19336950.2020.1859753] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 12/01/2020] [Accepted: 12/01/2020] [Indexed: 12/11/2022] Open
Abstract
Ion channels play pivotal role in the physiological and pathological function of immune cells. As immune cells represent a functionally diverse population, subtype-specific functional studies, such as single-cell electrophysiology require proper subset identification and separation. Magnetic-activated cell sorting (MACS) techniques provide an alternative to fluorescence-activated cell sorting (FACS), however, the potential impact of MACS-related beads on the biophysical and pharmacological properties of the ion channels were not studied yet. We studied the aforementioned properties of the voltage-gated Kv1.3 K+ channel in activated CD4+ T-cells as well as the membrane capacitance using whole-cell patch-clamp following immunomagnetic positive separation, using the REAlease® kit. This kit allows three experimental configurations: bead-bound configuration, bead-free configuration following the removal of magnetic beads, and the label-free configuration following removal of CD4 recognizing antibody fragments. As controls, we used FACS separation as well as immunomagnetic negative selection. The membrane capacitance and of the biophysical parameters of Kv1.3 gating, voltage-dependence of steady-state activation and inactivation kinetics of the current were not affected by the presence of MACS-related compounds on the cell surface. We found subtle differences in the activation kinetics of the Kv1.3 current that could not be explained by the presence of MACS-related compounds. Neither the equilibrium block of Kv1.3 by TEA+ or charybdotoxin (ChTx) nor the kinetics of ChTx block are affected by the presence of the magnetics beads on the cell surface. Based on our results MACS is a suitable method to separate cells for studying ion channels in non-excitable cells, such as T-lymphocytes.
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Affiliation(s)
- Gabor Tajti
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Tibor Gabor Szanto
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Agota Csoti
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Greta Racz
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - César Evaristo
- R&D Reagents Chemical Biology, Miltenyi Biotec B.V. & Co. KG, Bergisch Gladbach, Germany
| | - Peter Hajdu
- Department of Biophysics and Cell Biology, Faculty of Dentistry, University of Debrecen, Debrecen, Hungary
| | - Gyorgy Panyi
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
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4
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Gómez-Pastora J, Kim J, Multanen V, Weigand M, Walters NA, Reátegui E, Palmer AF, Yazer MH, Zborowski M, Chalmers JJ. Intrinsically magnetic susceptibility in human blood and its potential impact on cell separation: Non-classical and intermediate monocytes have the strongest magnetic behavior in fresh human blood. Exp Hematol 2021; 99:21-31.e5. [PMID: 34015390 DOI: 10.1016/j.exphem.2021.05.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 05/10/2021] [Accepted: 05/11/2021] [Indexed: 11/28/2022]
Abstract
The presence of iron in circulating monocytes is well known as they play an essential role in iron recycling. It has been demonstrated that the iron content of blood cells can be measured through their magnetic behavior; however, the magnetic properties of different monocyte subtypes remain unknown. In this study we report, for the first time, the magnetic behavior of classical, intermediate and non-classical monocytes, which may be related to their iron storage capacity. The magnetic properties of monocytes were compared with those of other blood cells, such as lymphocytes and red blood cells in the oxyhemoglobin and methemoglobin states, and a cancer cell type. For this analysis, we used an instrument referred to as a Cell Tracking Velocimetry (CTV), which quantitatively characterizes the magnetic behavior of biological entities. Our results revealed that significant fractions of the intermediate and non-classical monocytes (up to 59% and 65% depending on the sample, respectively) have paramagnetic properties, suggesting their higher iron storage capacities. Moreover, our findings have implications for the immunomagnetic separation industry; we propose that negative magnetic isolation techniques for recovering monocytes from blood should be used with caution, as it is possible to lose magnetic monocytes when using this technique.
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Affiliation(s)
- Jenifer Gómez-Pastora
- William G. Lowrie Department of Chemical and Biomolecular Engineering, Ohio State University, Columbus, OH
| | - James Kim
- William G. Lowrie Department of Chemical and Biomolecular Engineering, Ohio State University, Columbus, OH
| | - Victor Multanen
- William G. Lowrie Department of Chemical and Biomolecular Engineering, Ohio State University, Columbus, OH
| | - Mitchell Weigand
- William G. Lowrie Department of Chemical and Biomolecular Engineering, Ohio State University, Columbus, OH
| | - Nicole A Walters
- William G. Lowrie Department of Chemical and Biomolecular Engineering, Ohio State University, Columbus, OH
| | - Eduardo Reátegui
- William G. Lowrie Department of Chemical and Biomolecular Engineering, Ohio State University, Columbus, OH
| | - Andre F Palmer
- William G. Lowrie Department of Chemical and Biomolecular Engineering, Ohio State University, Columbus, OH
| | - Mark H Yazer
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA
| | - Maciej Zborowski
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, OH
| | - Jeffrey J Chalmers
- William G. Lowrie Department of Chemical and Biomolecular Engineering, Ohio State University, Columbus, OH.
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5
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Shen MJ, Olsthoorn RC, Zeng Y, Bakkum T, Kros A, Boyle AL. Magnetic-Activated Cell Sorting Using Coiled-Coil Peptides: An Alternative Strategy for Isolating Cells with High Efficiency and Specificity. ACS APPLIED MATERIALS & INTERFACES 2021; 13:11621-11630. [PMID: 33656313 PMCID: PMC7975280 DOI: 10.1021/acsami.0c22185] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Magnetic-activated cell sorting (MACS) is an affinity-based technique used to separate cells according to the presence of specific markers. Current MACS systems generally require an antigen to be expressed at the cell surface; these antigen-presenting cells subsequently interact with antibody-labeled magnetic particles, facilitating separation. Here, we present an alternative MACS method based on coiled-coil peptide interactions. We demonstrate that HeLa, CHO, and NIH3T3 cells can either incorporate a lipid-modified coiled-coil-forming peptide into their membrane, or that the cells can be transfected with a plasmid containing a gene encoding a coiled-coil-forming peptide. Iron oxide particles are functionalized with the complementary peptide and, upon incubation with the cells, labeled cells are facilely separated from nonlabeled populations. In addition, the resulting cells and particles can be treated with trypsin to facilitate detachment of the cells from the particles. Therefore, our new MACS method promotes efficient cell sorting of different cell lines, without the need for antigen presentation, and enables simple detachment of the magnetic particles from cells after the sorting process. Such a system can be applied to rapidly developing, sensitive research areas, such as the separation of genetically modified cells from their unmodified counterparts.
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Affiliation(s)
- Meng-Jie Shen
- Department
of Supramolecular & Biomaterials Chemistry, Leiden Institute of
Chemistry, Leiden University, Einsteinweg 55, Leiden 2333 CC, The Netherlands
| | - René C.L. Olsthoorn
- Department
of Supramolecular & Biomaterials Chemistry, Leiden Institute of
Chemistry, Leiden University, Einsteinweg 55, Leiden 2333 CC, The Netherlands
| | - Ye Zeng
- Department
of Supramolecular & Biomaterials Chemistry, Leiden Institute of
Chemistry, Leiden University, Einsteinweg 55, Leiden 2333 CC, The Netherlands
| | - Thomas Bakkum
- Department
of Bio-organic Synthesis, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, Leiden 2333 CC, The Netherlands
| | - Alexander Kros
- Department
of Supramolecular & Biomaterials Chemistry, Leiden Institute of
Chemistry, Leiden University, Einsteinweg 55, Leiden 2333 CC, The Netherlands
| | - Aimee L. Boyle
- Department
of Macromolecular Biochemistry, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, Leiden 2333 CC, The Netherlands
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6
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Horspool AM, Wang T, Scaringella YS, Taub ME, Chan TS. Human Liver Microsomes Immobilized on Magnetizable Beads: A Novel Approach to Study In Vitro Drug Metabolism. Drug Metab Dispos 2020; 48:645-654. [PMID: 32474441 PMCID: PMC7370995 DOI: 10.1124/dmd.120.090696] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 05/13/2020] [Indexed: 01/08/2023] Open
Abstract
Human liver microsomes (HLM) are a commonly used tool to study drug metabolism in vitro. Typical experiments conducted using suspensions of HLM can be challenging to separate from the incubation solution without lengthy ultracentrifugation steps. Magnetizable beads coated with silica (MGBS) were found to bind strongly to HLM, which could then be isolated and purified using a magnet. Binding of HLM to the MGBS (HLM-MGBS) was demonstrated to be mediated by strong interactions between microsomal phospholipids and MGBS, as artificially prepared phosphatidylcholine (PC) liposomes could be more efficiently captured by the MGBS. HLM-MGBS complexes retained functional cytochrome P450 and uridine-diphosphate-glucuronosyltransferase (UGT) activity as indicated by CYP2C8-mediated amodiaquine de-ethylation, CYP3A4-mediated midazolam 1'hydroxylation, UGT1A1-mediated glucuronidation of estradiol, UGT1A9-mediated glucuronidation of propofol, and UGT2B7-mediated glucuronidation of zidovudine. When comparing suspension HLM alone with HLM-MGBS complexes containing equivalent amounts of HLM, the intrinsic clearance (CLint) of CYP450 substrates was comparable; however, CLint of UGT1A1, UGT1A9, and UGT2B7 was increased in the HLM-MGBS system between 1.5- and 6-fold. HLM-MGBS used in an incubation could also be readily replaced with fresh HLM-MGBS to maintain the presence of active enzymes. Thus, HLM-MGBS demonstrate increased in vitro metabolic efficiency and manipulability, providing a new platform for determination of accurate metabolic parameters. SIGNIFICANCE STATEMENT: The following work describes the strong binding of HLM to magnetizable beads. In addition, the preservation of enzyme activity on the bound HLM provides a novel means to conduct preclinical metabolism studies.
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Affiliation(s)
- Alexander M Horspool
- Drug Metabolism and Pharmacokinetics, Boehringer Ingelheim Pharmaceuticals Inc., Ridgefield, Connecticut
| | - Ting Wang
- Drug Metabolism and Pharmacokinetics, Boehringer Ingelheim Pharmaceuticals Inc., Ridgefield, Connecticut
| | - Young-Sun Scaringella
- Drug Metabolism and Pharmacokinetics, Boehringer Ingelheim Pharmaceuticals Inc., Ridgefield, Connecticut
| | - Mitchell E Taub
- Drug Metabolism and Pharmacokinetics, Boehringer Ingelheim Pharmaceuticals Inc., Ridgefield, Connecticut
| | - Tom S Chan
- Drug Metabolism and Pharmacokinetics, Boehringer Ingelheim Pharmaceuticals Inc., Ridgefield, Connecticut
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7
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Unni M, Zhang J, George TJ, Segal MS, Fan ZH, Rinaldi C. Engineering magnetic nanoparticles and their integration with microfluidics for cell isolation. J Colloid Interface Sci 2020; 564:204-215. [PMID: 31911225 PMCID: PMC7023483 DOI: 10.1016/j.jcis.2019.12.092] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 12/19/2019] [Accepted: 12/20/2019] [Indexed: 01/09/2023]
Abstract
Isolation of cancer cells, bacteria, and viruses from peripheral blood has important applications in cancer diagnosis, therapy monitoring, and drug development. Magnetic particles functionalized with antibodies that target receptors of cancer cells have been shown to isolate such entities using magnetic field gradients. Here, we report enhancement in capture efficiency and specificity by engineering magnetic nanoparticles and integrating them with microfluidics for the enumeration of tumor cells. Nanoparticles were made from iron oxide, coated with poly(ethylene glycol), and conjugated through avidin-biotin chemistry with antibody specifically against epithelial cell adhesion molecule (EpCAM). On exposure of targeted nanoparticles to tumor cells, specific uptake by EpCAM-expressing tumor cells (e.g., BxPC3, a pancreatic cancer cell) was observed, whereas there was negligible uptake by cells with low EpCAM expression (e.g., CCRF-CEM, a leukemia cell). Using an arrangement of magnets called a Halbach array, capture efficiency and specificity towards BxPC3 cells tagged with magnetic nanoparticles were enhanced, compared to conditions without the magnetic field gradient and/or without magnetic nanoparticles, either in buffer or in whole blood. These results illustrate that engineered magnetic nanoparticles and their integration with microfluidics have great potential for tumor cell enumeration and cancer prognosis.
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Affiliation(s)
- Mythreyi Unni
- Department of Chemical Engineering, Gainesville, FL 32611, USA
| | - Jinling Zhang
- Interdisciplinary Microsystems Group, Department of Mechanical and Aerospace Engineering, Gainesville, FL 32611, USA
| | - Thomas J George
- Department of Medicine, Gainesville, FL 32611, USA; University of Florida Health Cancer Center, Gainesville, FL 32611, USA
| | - Mark S Segal
- Department of Medicine, Gainesville, FL 32611, USA
| | - Z Hugh Fan
- Interdisciplinary Microsystems Group, Department of Mechanical and Aerospace Engineering, Gainesville, FL 32611, USA; J. Crayton Pruitt Family Department of Biomedical Engineering, Gainesville, FL 32611, USA; Department of Chemistry, University of Florida, Gainesville, FL 32611, USA; University of Florida Health Cancer Center, Gainesville, FL 32611, USA.
| | - Carlos Rinaldi
- Department of Chemical Engineering, Gainesville, FL 32611, USA; J. Crayton Pruitt Family Department of Biomedical Engineering, Gainesville, FL 32611, USA; University of Florida Health Cancer Center, Gainesville, FL 32611, USA.
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8
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Park KJJ, Kim J, Testoff T, Adams J, Poklar M, Zborowski M, Venere M, Chalmers JJ. Quantitative characterization of the regulation of iron metabolism in glioblastoma stem-like cells using magnetophoresis. Biotechnol Bioeng 2019; 116:1644-1655. [PMID: 30906984 DOI: 10.1002/bit.26973] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 03/15/2019] [Accepted: 03/21/2019] [Indexed: 01/10/2023]
Abstract
This study focuses on different iron regulation mechanisms of glioblastoma (GBM) cancer stem-like cells (CSCs) and non-stem tumor cells (NSTCs) using multiple approaches: cell viability, density, and magnetophoresis. GBM CSCs and NSTCs were exposed to elevated iron concentration, and their magnetic susceptibility was measured using single cell magnetophoresis (SCM), which tracks the magnetic and settling velocities of thousands of individual cells passing through the magnetic field with a constant energy gradient. Our results consistently demonstrate that GBM NSTCs have higher magnetic susceptibility distribution at increased iron concentration compared with CSCs, and we speculate that it is because CSCs have the ability to store a high amount of iron in ferritin, whereas the free iron ions inside the NSTCs lead to higher magnetic susceptibility and reduced cell viability and growth. Further, their difference in magnetic susceptibility has led us to pursue a separate experiment using a quadrupole magnetic separator (QMS), a novel microfluidic device that uses a concentric channel and permanent magnets in a special configuration to separate samples based on their magnetic susceptibilities. GBM CSCs and NSTCs were exposed to elevated iron concentration, stained with two different trackers, mixed and introduced into QMS; subsequently, the separated fractions were analyzed by fluorescent microscopy. The separation results portray a successful label-less magnetic separation of the two populations.
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Affiliation(s)
- Kyoung-Joo J Park
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio
| | - James Kim
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio
| | - Thomas Testoff
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio
| | - Joseph Adams
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio
| | - Miranda Poklar
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio
| | - Maciej Zborowski
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, Ohio
| | - Monica Venere
- Department of Radiation Oncology and the Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
| | - Jeffrey J Chalmers
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio
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9
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Nguyen J, Conca DV, Stein J, Bovo L, Howard CA, Llorente Garcia I. Magnetic control of graphitic microparticles in aqueous solutions. Proc Natl Acad Sci U S A 2019; 116:2425-2434. [PMID: 30683726 PMCID: PMC6377480 DOI: 10.1073/pnas.1817989116] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Graphite is an inexpensive material with useful electrical, magnetic, thermal, and optical properties. It is also biocompatible and used universally as a substrate. Micrometer-sized graphitic particles in solution are therefore ideal candidates for novel lab-on-a-chip and remote manipulation applications in biomedicine, biophysics, chemistry, and condensed-matter physics. However, submerged graphite is not known to be amenable to magnetic manipulation, the optimal manipulation method for such applications. Here, we exploit the diamagnetism of graphite and demonstrate contactless magnetic positioning control of graphitic microflakes in diamagnetic aqueous solutions. We develop a theoretical model for magnetic manipulation of graphite microflakes and demonstrate experimentally magnetic transport of such particles over distances [Formula: see text] with peak velocities [Formula: see text] in inhomogeneous magnetic fields. We achieve fully biocompatible transport for lipid-coated graphite in NaCl aqueous solution, paving the way for previously undiscovered biomedical applications. Our results prove that micrometer-sized graphite can be magnetically manipulated in liquid media.
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Affiliation(s)
- Johnny Nguyen
- Department of Physics and Astronomy, University College London, London WC1E 6BT, United Kingdom
| | - Dario Valter Conca
- Department of Physics and Astronomy, University College London, London WC1E 6BT, United Kingdom
| | - Johannes Stein
- Department of Physics and Astronomy, University College London, London WC1E 6BT, United Kingdom
| | - Laura Bovo
- Department of Physics and Astronomy, University College London, London WC1E 6BT, United Kingdom
- London Centre for Nanotechnology, University College London, London WC1H 0AJ, United Kingdom
- Department of Innovation and Enterprise, University College London, London W1T 4TJ, United Kingdom
| | - Chris A Howard
- Department of Physics and Astronomy, University College London, London WC1E 6BT, United Kingdom
| | - Isabel Llorente Garcia
- Department of Physics and Astronomy, University College London, London WC1E 6BT, United Kingdom;
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10
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Davis RM, Kiss B, Trivedi DR, Metzner TJ, Liao JC, Gambhir SS. Surface-Enhanced Raman Scattering Nanoparticles for Multiplexed Imaging of Bladder Cancer Tissue Permeability and Molecular Phenotype. ACS NANO 2018; 12:9669-9679. [PMID: 30203645 PMCID: PMC6202635 DOI: 10.1021/acsnano.8b03217] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Accepted: 08/28/2018] [Indexed: 05/20/2023]
Abstract
Bladder cancer has the highest recurrence rate of all cancers due in part to inadequate transurethral resection. Inadequate resection is caused by the inability of cystoscopes to detect invisible lesions during the resection procedure. To improve detection and resection of nonmuscle invasive bladder cancer, we quantified the ability of a surface-enhanced Raman nanoparticle and endoscope system to classify bladder tissue as normal or cancerous. Both antibody-based (active) and tissue permeability-based (passive) targeting mechanisms were evaluated by topically applying nanoparticles to ex vivo human bladder tissue samples. Multiplexed molecular imaging of CD47 and Carbonic Anhydrase 9 tumor proteins gave a receiver operating characteristic area under the curve (ROC AUC of 0.93 (0.75, 1.00). Furthermore, passively targeted nanoparticles enabled tissue classification with an ROC AUC of 0.93 (0.73, 1.00). Passively targeted nanoparticles penetrated 5-fold deeper and bound to tumor tissue at 3.3-fold higher concentrations in cancer compared to normal bladder urothelium, suggesting the existence of an enhanced surface permeability and retention effect in human bladder cancer.
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Affiliation(s)
- Ryan M. Davis
- Department
of Radiology and Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, California 94305, United States
| | - Bernhard Kiss
- Department
of Radiology and Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, California 94305, United States
- Department
of Urology, Stanford University School of
Medicine, Stanford, California 94305, United States
| | - Dharati R. Trivedi
- Department
of Urology, Stanford University School of
Medicine, Stanford, California 94305, United States
- Veterans
Affairs, Palo Alto Health Care System, Palo Alto, California 94550, United States
| | - Thomas J. Metzner
- Department
of Urology, Stanford University School of
Medicine, Stanford, California 94305, United States
| | - Joseph C. Liao
- Department
of Urology, Stanford University School of
Medicine, Stanford, California 94305, United States
- Veterans
Affairs, Palo Alto Health Care System, Palo Alto, California 94550, United States
| | - Sanjiv S. Gambhir
- Department
of Radiology and Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, California 94305, United States
- E-mail:
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11
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Xie W, Guo Z, Gao F, Gao Q, Wang D, Liaw BS, Cai Q, Sun X, Wang X, Zhao L. Shape-, size- and structure-controlled synthesis and biocompatibility of iron oxide nanoparticles for magnetic theranostics. Theranostics 2018; 8:3284-3307. [PMID: 29930730 PMCID: PMC6010979 DOI: 10.7150/thno.25220] [Citation(s) in RCA: 182] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 03/29/2018] [Indexed: 12/23/2022] Open
Abstract
In the past decade, iron oxide nanoparticles (IONPs) have attracted more and more attention for their excellent physicochemical properties and promising biomedical applications. In this review, we summarize and highlight recent progress in the design, synthesis, biocompatibility evaluation and magnetic theranostic applications of IONPs, with a special focus on cancer treatment. Firstly, we provide an overview of the controlling synthesis strategies for fabricating zero-, one- and three-dimensional IONPs with different shapes, sizes and structures. Then, the in vitro and in vivo biocompatibility evaluation and biotranslocation of IONPs are discussed in relation to their chemo-physical properties including particle size, surface properties, shape and structure. Finally, we also highlight significant achievements in magnetic theranostic applications including magnetic resonance imaging (MRI), magnetic hyperthermia and targeted drug delivery. This review provides a background on the controlled synthesis, biocompatibility evaluation and applications of IONPs as cancer theranostic agents and an overview of the most up-to-date developments in this area.
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Affiliation(s)
- Wensheng Xie
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science & Engineering, Tsinghua University, Beijing, 100084, China
- Advanced Materials of Ministry of Education of China, School of Materials Science & Engineering, Tsinghua University, Beijing, 100084, China
| | - Zhenhu Guo
- School of Earth Sciences and Resources, China University of Geosciences, Beijing, 10083, China
| | - Fei Gao
- College of Chemistry and Materials Science, Northwest University, Xi'an, Shanxi 710069, China
| | - Qin Gao
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science & Engineering, Tsinghua University, Beijing, 100084, China
- Advanced Materials of Ministry of Education of China, School of Materials Science & Engineering, Tsinghua University, Beijing, 100084, China
| | - Dan Wang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science & Engineering, Tsinghua University, Beijing, 100084, China
- Advanced Materials of Ministry of Education of China, School of Materials Science & Engineering, Tsinghua University, Beijing, 100084, China
| | - Bor-shuang Liaw
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science & Engineering, Tsinghua University, Beijing, 100084, China
- Advanced Materials of Ministry of Education of China, School of Materials Science & Engineering, Tsinghua University, Beijing, 100084, China
| | - Qiang Cai
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science & Engineering, Tsinghua University, Beijing, 100084, China
- Advanced Materials of Ministry of Education of China, School of Materials Science & Engineering, Tsinghua University, Beijing, 100084, China
| | - Xiaodan Sun
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science & Engineering, Tsinghua University, Beijing, 100084, China
- Advanced Materials of Ministry of Education of China, School of Materials Science & Engineering, Tsinghua University, Beijing, 100084, China
| | - Xiumei Wang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science & Engineering, Tsinghua University, Beijing, 100084, China
- Advanced Materials of Ministry of Education of China, School of Materials Science & Engineering, Tsinghua University, Beijing, 100084, China
| | - Lingyun Zhao
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science & Engineering, Tsinghua University, Beijing, 100084, China
- Advanced Materials of Ministry of Education of China, School of Materials Science & Engineering, Tsinghua University, Beijing, 100084, China
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12
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Chen S, Sun Y, Neoh KH, Chen A, Li W, Yang X, Han RPS. Microfluidic assay of circulating endothelial cells in coronary artery disease patients with angina pectoris. PLoS One 2017; 12:e0181249. [PMID: 28704506 PMCID: PMC5509377 DOI: 10.1371/journal.pone.0181249] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2017] [Accepted: 06/28/2017] [Indexed: 11/25/2022] Open
Abstract
Background Circulating endothelial cells (CECs) are widely reported as a promising biomarker of endothelial damage/dysfunction in coronary artery disease (CAD). The two popular methods of CEC quantification include the use of immunomagnetic beads separation (IB) and flow cytometry analysis (FC); however, they suffer from two main shortcomings that affect their diagnostic and prognostic responses: non-specific bindings of magnetic beads to non-target cells and a high degree of variability in rare cell identification, respectively. We designed a microfluidic chip with spatially staggered micropillars for the efficient harvesting of CECs with intact cellular morphology in an attempt to revisit the diagnostic goal of CEC counts in CAD patients with angina pectoris. Methods A label-free microfluidic assay that involved an in-situ enumeration and immunofluorescent identification (DAPI+/CD146+/VEGFR1+/CD45-) of CECs was carried out to assess the CEC count in human peripheral blood samples. A total of 55 CAD patients with angina pectoris [16 with chronic stable angina (CSA) and 39 with unstable angina (UA)], together with 15 heathy controls (HCs) were enrolled in the study. Results CEC counts are significantly higher in both CSA and UA groups compared to the HC group [respective medians of 6.9, 10.0 and 1.5 cells/ml (p < 0.01)]. Further, a significant elevation of CEC count was observed in the three UA subgroups [low risk (5.3) vs. intermediate risk (10.8) vs. high risk (18.0) cells/ml, p < 0.001) classified in accordance to the TIMI NSTEMI/UA risk score system. From the receiver-operating characteristic curve analysis, the AUCs for distinguishing CSA and UA from HC were 0.867 and 0.938, respectively. The corresponding sensitivities were 87.5% and 84.6% and the specificities were 66.7% and 86.7%, respectively. Conclusions Our microfluidic assay system is efficient and stable for CEC capture and enumeration. The results showed that the CEC count has the potential to be a promising clinical biomarker for the assessment of endothelial damage/dysfunction in CAD patients with angina pectoris.
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Affiliation(s)
- Shuiyu Chen
- College of Engineering, Peking University, Beijing, China
| | - Yukun Sun
- College of Engineering, Peking University, Beijing, China
| | | | - Anqi Chen
- College of Engineering, Peking University, Beijing, China
| | - Weiju Li
- Peking University Hospital, Beijing, China
| | - Xiaorui Yang
- Peking University Hospital, Beijing, China
- * E-mail: (XY); (RPSH)
| | - Ray P. S. Han
- College of Engineering, Peking University, Beijing, China
- * E-mail: (XY); (RPSH)
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13
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Moore LR, Williams PS, Chalmers JJ, Zborowski M. Tessellated permanent magnet circuits for flow-through, open gradient separations of weakly magnetic materials. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 2017; 427:325-330. [PMID: 29104346 PMCID: PMC5667671 DOI: 10.1016/j.jmmm.2016.11.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Emerging microfluidic-based cell assays favor label-free red blood cell (RBC) depletion. Magnetic separation of RBC is possible because of the paramagnetism of deoxygenated hemoglobin but the process is slow for open-gradient field configurations. In order to increase the throughput, periodic arrangements of the unit magnets were considered, consisting of commercially available Nd-Fe-B permanent magnets and soft steel flux return pieces. The magnet design is uniquely suitable for multiplexing by magnet tessellation, here meaning the tiling of the magnet assembly cross-sectional plane by periodic repetition of the magnet and the flow channel shapes. The periodic pattern of magnet magnetizations allows a reduction of the magnetic material per channel with minimal distortion of the field cylindrical symmetry inside the magnet apertures. A number of such magnet patterns are investigated for separator performance, size and economy with the goal of designing an open-gradient magnetic separator capable of reducing the RBC number concentration a hundred-fold in 1 mL whole blood per hour.
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Affiliation(s)
- Lee R. Moore
- Department of Biomedical Engineering, Cleveland Clinic, 9500 Euclid Ave., Cleveland, OH 44195
| | | | - Jeffrey J. Chalmers
- William G. Lowrie Department of Chemical and Biomedical Engineering, 151 W. Woodruff Avenue, The Ohio State University, Columbus, OH 43210, U.S.A
| | - Maciej Zborowski
- Department of Biomedical Engineering, Cleveland Clinic, 9500 Euclid Ave., Cleveland, OH 44195
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14
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Lin R, Li Y, MacDonald T, Wu H, Provenzale J, Peng X, Huang J, Wang L, Wang AY, Yang J, Mao H. Improving sensitivity and specificity of capturing and detecting targeted cancer cells with anti-biofouling polymer coated magnetic iron oxide nanoparticles. Colloids Surf B Biointerfaces 2017; 150:261-270. [PMID: 28029547 PMCID: PMC5253252 DOI: 10.1016/j.colsurfb.2016.10.026] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 08/29/2016] [Accepted: 10/13/2016] [Indexed: 02/08/2023]
Abstract
Detecting circulating tumor cells (CTCs) with high sensitivity and specificity is critical to management of metastatic cancers. Although immuno-magnetic technology for in vitro detection of CTCs has shown promising potential for clinical applications, the biofouling effect, i.e., non-specific adhesion of biomolecules and non-cancerous cells in complex biological samples to the surface of a device/probe, can reduce the sensitivity and specificity of cell detection. Reported herein is the application of anti-biofouling polyethylene glycol-block-allyl glycidyl ether copolymer (PEG-b-AGE) coated iron oxide nanoparticles (IONPs) to improve the separation of targeted tumor cells from aqueous phase in an external magnetic field. PEG-b-AGE coated IONPs conjugated with transferrin (Tf) exhibited significant anti-biofouling properties against non-specific protein adsorption and off-target cell uptake, thus substantially enhancing the ability to target and separate transferrin receptor (TfR) over-expressed D556 medulloblastoma cells. Tf conjugated PEG-b-AGE coated IONPs exhibited a high capture rate of targeted tumor cells (D556 medulloblastoma cell) in cell media (58.7±6.4%) when separating 100 targeted tumor cells from 1×105 non-targeted cells and 41 targeted tumor cells from 100 D556 medulloblastoma cells spiked into 1mL blood. It is demonstrated that developed nanoparticle has higher efficiency in capturing targeted cells than widely used micron-sized particles (i.e., Dynabeads®).
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Affiliation(s)
- Run Lin
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, GA 30322, USA; Department of Radiology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Yuancheng Li
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Tobey MacDonald
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Hui Wu
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - James Provenzale
- Department of Radiology, Duke University Medical Center, Durham, NC 27710, USA
| | - Xingui Peng
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, GA 30322, USA; Department of Radiology, The Medical College of Southeastern University, Nanjing, Jiangsu, China
| | - Jing Huang
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Liya Wang
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, GA 30322, USA
| | | | - Jianyong Yang
- Department of Radiology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Hui Mao
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, GA 30322, USA.
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16
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Xie Y, Liu D, Cai C, Chen X, Zhou Y, Wu L, Sun Y, Dai H, Kong X, Liu P. Size-dependent cytotoxicity of Fe3O4 nanoparticles induced by biphasic regulation of oxidative stress in different human hepatoma cells. Int J Nanomedicine 2016; 11:3557-70. [PMID: 27536098 PMCID: PMC4973727 DOI: 10.2147/ijn.s105575] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The application of Fe3O4 nanoparticles (NPs) has made great progress in the diagnosis of disease and in the drug delivery system for cancer therapy, but the relative mechanisms of potential toxicity induced by Fe3O4 have not kept pace with its development in the application, which has hampered its further clinical application. In this article, we used two kinds of human hepatoma cell lines, SK-Hep-1 and Hep3B, to investigate the cytotoxic effects and the involved mechanisms of small Fe3O4 NPs with different diameters (6 nm, 9 nm, and 14 nm). Results showed that the size of NPs effectively influences the cytotoxicity of hepatoma cells: 6 nm Fe3O4 NPs exhibited negligible cytotoxicity and 9 nm Fe3O4 NPs affected cytotoxicity via cellular mitochondrial dysfunction and by inducing necrosis mediated through the mitochondria-dependent intracellular reactive oxygen species generation. Meanwhile, 14 nm Fe3O4 NPs induced cytotoxicity by impairing the integrity of plasma membrane and promoting massive lactate dehydrogenase leakage. These results explain the detailed mechanism of different diameters of small Fe3O4 NPs-induced cytotoxicity. We anticipate that this study will provide different insights into the cytotoxicity mechanism of Fe3O4 NPs, so as to make them safer to use in clinical application.
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Affiliation(s)
- Yuexia Xie
- Central Laboratory; State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute
| | - Dejun Liu
- Department of Biliary-Pancreatic Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | | | | | | | | | - Yongwei Sun
- Department of Biliary-Pancreatic Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Huili Dai
- Central Laboratory; State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute
| | - Xianming Kong
- Central Laboratory; State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute
| | - Peifeng Liu
- Central Laboratory; State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute
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17
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Phan JC, Nehilla BJ, Srinivasan S, Coombs RW, Woodrow KA, Lai JJ. Human Immunodeficiency Virus (HIV) Separation and Enrichment via the Combination of Antiviral Lectin Recognition and a Thermoresponsive Reagent System. Pharm Res 2016; 33:2411-20. [PMID: 27401412 DOI: 10.1007/s11095-016-1980-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2016] [Accepted: 06/21/2016] [Indexed: 11/28/2022]
Abstract
PURPOSE In order to improve the detection limit of existing HIV diagnostic assays, we explored the use of a temperature-responsive magnetic nanoparticle reagent system in conjunction with cyanovirin-N for HIV recognition to rapidly and efficiently concentrate viral particles from larger sample volumes, ~ 1 ml. METHODS Cyanovirin-N (CVN) mutant, Q62C, was expressed, biotinylated, and then complexed with a thermally responsive polymer-streptavidin conjugate. Confirmation of protein expression/activity was performed using matrix assisted laser desorption/ionization (MALDI) and a TZM-bl HIV inhibition assay. Biotinylated CVN mutant recognition with gp120 was characterized using surface plasmon resonance (SPR). Virus separation and enrichment using a thermoresponsive magnetic nanoparticle reagent system were measured using RT-PCR. RESULTS Biotinylated Q62C exhibited a KD of 0.6 nM to gp120. The temperature-responsive binary reagent system achieved a maximum viral capture of nearly 100% HIV, 1 × 10(5) virus copies in 100 μl, using pNIPAAm-Q62C within 30 minutes. Additionally, the same reagent system achieved nearly 9-fold enrichment by processing a 10-times larger sample of 1000 μl (Fig. 3). CONCLUSION This work demonstrated a temperature-responsive reagent system that provides enrichment of HIV using antiviral lectin CVN for recognition, which is potentially amenable for use in point-of-care settings.
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Affiliation(s)
- Joseph C Phan
- Department of Bioengineering, University of Washington, Box 355061, Seattle, Washington, 98195, USA
| | - Barrett J Nehilla
- Nexgenia, Inc., 4000 Mason Rd., Fluke Hall, Suite 312-1, Seattle, Washington, 98195, USA
| | - Selvi Srinivasan
- Department of Bioengineering, University of Washington, Box 355061, Seattle, Washington, 98195, USA
| | - Robert W Coombs
- Division of Allergy and Infectious Diseases, University of Washington, Seattle, Washington, 98104, USA
| | - Kim A Woodrow
- Department of Bioengineering, University of Washington, Box 355061, Seattle, Washington, 98195, USA.
| | - James J Lai
- Department of Bioengineering, University of Washington, Box 355061, Seattle, Washington, 98195, USA.
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18
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Romero G, Lilly JJ, Abraham NS, Shin HY, Balasubramaniam V, Izumi T, Berron BJ. Protective Polymer Coatings for High-Throughput, High-Purity Cellular Isolation. ACS APPLIED MATERIALS & INTERFACES 2015; 7:17598-602. [PMID: 26244409 PMCID: PMC4544319 DOI: 10.1021/acsami.5b06298] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Cell-based therapies are emerging as the next frontier of medicine, offering a plausible path forward in the treatment of many devastating diseases. Critically, current methods for antigen positive cell sorting lack a high throughput method for delivering ultrahigh purity populations, prohibiting the application of some cell-based therapies to widespread diseases. Here we show the first use of targeted, protective polymer coatings on cells for the high speed enrichment of cells. Individual, antigen-positive cells are coated with a biocompatible hydrogel which protects the cells from a surfactant solution, while uncoated cells are immediately lysed. After lysis, the polymer coating is removed through orthogonal photochemistry, and the isolate has >50% yield of viable cells and these cells proliferate at rates comparable to control cells. Minority cell populations are enriched from erythrocyte-depleted blood to >99% purity, whereas the entire batch process requires 1 h and <$2000 in equipment. Batch scale-up is only contingent on irradiation area for the coating photopolymerization, as surfactant-based lysis can be easily achieved on any scale.
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Affiliation(s)
- Gabriela Romero
- Department of Chemical and Materials Engineering, Department of Biomedical Engineering, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Jacob J. Lilly
- Department of Chemical and Materials Engineering, Department of Biomedical Engineering, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Nathan S. Abraham
- Department
of Chemical Engineering, University of Massachusetts
Amherst, Amherst, Massachusetts 01003, United States
| | - Hainsworth Y. Shin
- Department of Chemical and Materials Engineering, Department of Biomedical Engineering, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Vivek Balasubramaniam
- Department
of Pediatrics, University of Wisconsin, Madison, Wisconsin 53792, United States
| | - Tadahide Izumi
- Graduate
Center for Toxicology, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Brad J. Berron
- Department of Chemical and Materials Engineering, Department of Biomedical Engineering, University of Kentucky, Lexington, Kentucky 40506, United States
- E-mail:
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19
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Plouffe BD, Murthy SK, Lewis LH. Fundamentals and application of magnetic particles in cell isolation and enrichment: a review. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2015; 78:016601. [PMID: 25471081 PMCID: PMC4310825 DOI: 10.1088/0034-4885/78/1/016601] [Citation(s) in RCA: 177] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Magnetic sorting using magnetic beads has become a routine methodology for the separation of key cell populations from biological suspensions. Due to the inherent ability of magnets to provide forces at a distance, magnetic cell manipulation is now a standardized process step in numerous processes in tissue engineering, medicine, and in fundamental biological research. Herein we review the current status of magnetic particles to enable isolation and separation of cells, with a strong focus on the fundamental governing physical phenomena, properties and syntheses of magnetic particles and on current applications of magnet-based cell separation in laboratory and clinical settings. We highlight the contribution of cell separation to biomedical research and medicine and detail modern cell-separation methods (both magnetic and non-magnetic). In addition to a review of the current state-of-the-art in magnet-based cell sorting, we discuss current challenges and available opportunities for further research, development and commercialization of magnetic particle-based cell-separation systems.
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Affiliation(s)
- Brian D Plouffe
- Department of Chemical Engineering, Northeastern University, Boston, MA 02115, USA. The Barnett Institute of Chemical and Biological Analysis, Northeastern University, Boston, MA 02115, USA
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20
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Antibody-conjugated paramagnetic nanobeads: kinetics of bead-cell binding. Int J Mol Sci 2014; 15:8821-34. [PMID: 24852940 PMCID: PMC4057761 DOI: 10.3390/ijms15058821] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Revised: 04/23/2014] [Accepted: 04/24/2014] [Indexed: 01/28/2023] Open
Abstract
Specific labelling of target cell surfaces using antibody-conjugated paramagnetic nanobeads is essential for efficient magnetic cell separation. However, studies examining parameters determining the kinetics of bead-cell binding are scarce. The present study determines the binding rates for specific and unspecific binding of 150 nm paramagnetic nanobeads to highly purified target and non-target cells. Beads bound to cells were enumerated spectrophotometrically. Results show that the initial bead-cell binding rate and saturation levels depend on initial bead concentration and fit curves of the form A(1 − exp(−kt)). Unspecific binding within conventional experimental time-spans (up to 60 min) was not detectable photometrically. For CD3-positive cells, the probability of specific binding was found to be around 80 times larger than that of unspecific binding.
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21
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Lustberg MB, Balasubramanian P, Miller B, Garcia-Villa A, Deighan C, Wu Y, Carothers S, Berger M, Ramaswamy B, Macrae ER, Wesolowski R, Layman RM, Mrozek E, Pan X, Summers TA, Shapiro CL, Chalmers JJ. Heterogeneous atypical cell populations are present in blood of metastatic breast cancer patients. Breast Cancer Res 2014; 16:R23. [PMID: 24602188 PMCID: PMC4053256 DOI: 10.1186/bcr3622] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Accepted: 02/10/2014] [Indexed: 01/03/2023] Open
Abstract
INTRODUCTION Circulating tumor cells (CTCs) are commonly isolated from the blood by targeting the epithelial cell adhesion molecule (EpCAM) through positive selection. However, EpCAM can be downregulated during metastatic progression, or it can be initially not present. We designed the present prospective trial to characterize CTCs as well as other circulating cell populations in blood samples from women with metastatic breast cancer without EpCAM-dependent enrichment and/or isolation technology. METHODS A total of 32 patients with metastatic breast cancer were enrolled, and blood samples were processed using a previously described negative depletion immunomagnetic methodology. Samples from healthy volunteers were run as controls (n = 5). Multistep sequential labeling was performed to label and fix cell-surface markers followed by permeabilization for cytokeratins (CK) 8, 18 and 19. Multiparametric flow cytometry (FCM) analysis was conducted using a BD LSR II flow cytometer or a BD FACSAria II or FACSAria III cell sorter. Immunocytochemical staining on postenrichment specimens for DAPI, EpCAM, CD45, CK, epidermal growth factor receptor and vimentin was performed. Expression of these markers was visualized using confocal microscopy (CM). RESULTS CD45-negative/CK-positive (CD45- CK+) populations with EpCAM + and EpCAM - expression were identified with both FCM and CM from the negatively enriched patient samples. In addition, EpCAM + and EpCAM - populations that were CK + and coexpressing the pan-hematopoietic marker CD45 were also noted. There were more CK + EpCAM - events/ml than CK + EpCAM + events/ml in both the CD45- and CD45+ fractions (both statistically significant at P ≤ 0.0005). The number of CK + CD45- and CK + CD45+ events per milliliter in blood samples (regardless of EpCAM status) was higher in patient samples than in normal control samples (P ≤ 0.0005 and P ≤ 0.026, respectively). Further, a significant fraction of the CK + CD45+ events also expressed CD68, a marker associated with tumor-associated macrophages. Higher levels of CD45-CK + EpCAM - were associated with worse overall survival (P = 0.0292). CONCLUSIONS Metastatic breast cancer patients have atypical cells that are CK + EpCAM - circulating in their blood. Because a substantial number of these patients do not have EpCAM + CTCs, additional studies are needed to evaluate the role of EpCAM - circulating cells as a prognostic and predictive marker.
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MESH Headings
- Adult
- Aged
- Antigens, CD/blood
- Antigens, CD/metabolism
- Antigens, Differentiation, Myelomonocytic/blood
- Antigens, Differentiation, Myelomonocytic/metabolism
- Antigens, Neoplasm/blood
- Antigens, Neoplasm/metabolism
- Biomarkers, Tumor/blood
- Biomarkers, Tumor/metabolism
- Breast Neoplasms/blood
- Breast Neoplasms/metabolism
- Breast Neoplasms/pathology
- Cell Adhesion Molecules/blood
- Cell Adhesion Molecules/metabolism
- Cell Line, Tumor
- Epithelial Cell Adhesion Molecule
- ErbB Receptors/blood
- ErbB Receptors/metabolism
- Female
- Flow Cytometry
- Humans
- Immunohistochemistry
- Keratin-18/blood
- Keratin-18/metabolism
- Keratin-19/blood
- Keratin-19/metabolism
- Keratin-8/blood
- Keratin-8/metabolism
- Leukocyte Common Antigens/blood
- Leukocyte Common Antigens/metabolism
- MCF-7 Cells
- Microscopy, Confocal
- Middle Aged
- Neoplasm Metastasis
- Neoplastic Cells, Circulating/metabolism
- Prognosis
- Prospective Studies
- Vimentin/blood
- Vimentin/metabolism
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Affiliation(s)
- Maryam B Lustberg
- Stefanie Spielman Comprehensive Breast Center, Wexner Medical Center, The Ohio State University, 1145 Olentangy River Road, Columbus, OH 43212, USA
- The Breast Cancer Research Program, The Ohio State University Comprehensive Cancer Center–Arthur G James Cancer Hospital and Solove Research Institute, 300 W 10th Avenue, Columbus, OH 43210, USA
| | - Priya Balasubramanian
- William G Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 125A Koffolt Laboratories, 140 W 19th Ave, Columbus, OH 43210, USA
| | - Brandon Miller
- William G Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 125A Koffolt Laboratories, 140 W 19th Ave, Columbus, OH 43210, USA
| | - Alejandra Garcia-Villa
- William G Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 125A Koffolt Laboratories, 140 W 19th Ave, Columbus, OH 43210, USA
| | - Clayton Deighan
- William G Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 125A Koffolt Laboratories, 140 W 19th Ave, Columbus, OH 43210, USA
| | - Yongqi Wu
- William G Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 125A Koffolt Laboratories, 140 W 19th Ave, Columbus, OH 43210, USA
| | - Sarah Carothers
- Stefanie Spielman Comprehensive Breast Center, Wexner Medical Center, The Ohio State University, 1145 Olentangy River Road, Columbus, OH 43212, USA
- The Breast Cancer Research Program, The Ohio State University Comprehensive Cancer Center–Arthur G James Cancer Hospital and Solove Research Institute, 300 W 10th Avenue, Columbus, OH 43210, USA
| | - Michael Berger
- Stefanie Spielman Comprehensive Breast Center, Wexner Medical Center, The Ohio State University, 1145 Olentangy River Road, Columbus, OH 43212, USA
- The Breast Cancer Research Program, The Ohio State University Comprehensive Cancer Center–Arthur G James Cancer Hospital and Solove Research Institute, 300 W 10th Avenue, Columbus, OH 43210, USA
| | - Bhuvaneswari Ramaswamy
- Stefanie Spielman Comprehensive Breast Center, Wexner Medical Center, The Ohio State University, 1145 Olentangy River Road, Columbus, OH 43212, USA
- The Breast Cancer Research Program, The Ohio State University Comprehensive Cancer Center–Arthur G James Cancer Hospital and Solove Research Institute, 300 W 10th Avenue, Columbus, OH 43210, USA
| | - Erin R Macrae
- Stefanie Spielman Comprehensive Breast Center, Wexner Medical Center, The Ohio State University, 1145 Olentangy River Road, Columbus, OH 43212, USA
- The Breast Cancer Research Program, The Ohio State University Comprehensive Cancer Center–Arthur G James Cancer Hospital and Solove Research Institute, 300 W 10th Avenue, Columbus, OH 43210, USA
| | - Robert Wesolowski
- Stefanie Spielman Comprehensive Breast Center, Wexner Medical Center, The Ohio State University, 1145 Olentangy River Road, Columbus, OH 43212, USA
- The Breast Cancer Research Program, The Ohio State University Comprehensive Cancer Center–Arthur G James Cancer Hospital and Solove Research Institute, 300 W 10th Avenue, Columbus, OH 43210, USA
| | - Rachel M Layman
- Stefanie Spielman Comprehensive Breast Center, Wexner Medical Center, The Ohio State University, 1145 Olentangy River Road, Columbus, OH 43212, USA
- The Breast Cancer Research Program, The Ohio State University Comprehensive Cancer Center–Arthur G James Cancer Hospital and Solove Research Institute, 300 W 10th Avenue, Columbus, OH 43210, USA
| | - Ewa Mrozek
- Stefanie Spielman Comprehensive Breast Center, Wexner Medical Center, The Ohio State University, 1145 Olentangy River Road, Columbus, OH 43212, USA
- The Breast Cancer Research Program, The Ohio State University Comprehensive Cancer Center–Arthur G James Cancer Hospital and Solove Research Institute, 300 W 10th Avenue, Columbus, OH 43210, USA
| | - Xueliang Pan
- Center for Biostatistics, The Ohio State University, 2012 Kenny Road, Columbus, OH 43221, USA
| | - Thomas A Summers
- Department of Pathology and Laboratory Services, Walter Reed National Military Medical Center, 8901 Rockville Pike, Bethesda, MD 20889, USA
| | - Charles L Shapiro
- Stefanie Spielman Comprehensive Breast Center, Wexner Medical Center, The Ohio State University, 1145 Olentangy River Road, Columbus, OH 43212, USA
- The Breast Cancer Research Program, The Ohio State University Comprehensive Cancer Center–Arthur G James Cancer Hospital and Solove Research Institute, 300 W 10th Avenue, Columbus, OH 43210, USA
| | - Jeffrey J Chalmers
- William G Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 125A Koffolt Laboratories, 140 W 19th Ave, Columbus, OH 43210, USA
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22
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Xu J, Mahajan K, Xue W, Winter JO, Zborowski M, Chalmers JJ. Simultaneous, single particle, magnetization and size measurements of micron sized, magnetic particles. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 2012; 324:4189-4199. [PMID: 22962515 PMCID: PMC3433070 DOI: 10.1016/j.jmmm.2012.07.039] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Single particle magnetization and size measurements of micron and nano sized, magnetic particles were made using a previously described device referred to as Cell Tracking Velocimetry, CTV. Three types of commercially available, and commonly used, magnetic particles were studied in this report. While the CTV instrument provides individual particles measurements, the average magnetization and size measurements were found to have reasonable agreements with reported values from instruments which measure bulk values. In addition, the CTV instrument, using electromagnets, can also determine magnetization curves, which also proved to have reasonable agreement with other published studies. Given that magnetic separation and analysis technology is dependent on the quality of the magnetic particles used, studies such as this one using CTV provide not only average data, but also provides information with respect to the distribution of the properties such as magnetization and size. For example, the spread of the data in magnetic and settling velocities were found to be predominately due to the size distribution of the analyzed particles.
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Affiliation(s)
- Jie Xu
- William G Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 140 W. 19th Avenue, Columbus, OH 43210
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Sun J, Zborowski M, Chalmers JJ. Quantification of both the presence, and oxidation state, of Mn in Bacillus atrophaeus spores and its imparting of magnetic susceptibility to the spores. Biotechnol Bioeng 2011; 108:1119-29. [PMID: 21449026 DOI: 10.1002/bit.23034] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2010] [Revised: 11/26/2010] [Accepted: 12/02/2010] [Indexed: 11/11/2022]
Abstract
Bacillus atrophaeus spores were previously reported to have significant magnetic susceptibility in a magnetic field due to the presence of Mn. However, relatively little is known about the total amount and distribution of the oxidation state of Mn associated with this specific strain's spores. Using the instrument, cell tracking velocimetry (CTV) both magnetically induced velocity and settling velocity was quantitatively measured. Visual observations, and calculated diameter using previously reported densities, indicate that the spores are present in the form of clusters of approximately 3-6 µm. Treatment of these clusters with EDTA or pH of 2.0 or below resulted in not only the disruption of the spore clusters, but also a significant decrease in magnetic susceptibility, in some cases by almost two orders of magnitude. Since the magnetic susceptibility of Mn varies significantly between the three typically reported valance states of Mn, Mn(II), Mn(III), and Mn(IV); X-Ray Photoelectron Spectroscopy, XPS, was used to determined the valance states of Mn in the spores. This XPS analysis, which penetrates up to 10 nm into the spore, returned the following fractions: 0.41, 0.38, and 0.21 for the valance states: Mn(II), Mn(III), and Mn(IV), respectively. The total mass of Mn associated with each spore cluster was determined by ICP-MS. A second, completely independent estimate of Mn mass associated with each spore cluster was made, by mathematically solving for the amount of Mn per spore cluster using the experimentally measured magnetophoretic mobility and the magnetic susceptibility of each of the three valence states from the XPS analysis. IPC-MS returned a value of 3.28 × 10(-11) g of Mn per spore cluster while the calculated estimation from mobility and XPS analysis retuned a value of 1.16 × 10(-11) g, which given the complexity of the two techniques, is a reasonable agreement. Finally, a discussion of potential applications of the magnetic properties of these spores is presented.
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Affiliation(s)
- Jianxin Sun
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio 43210, USA
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Rauwerdink AM, Giustini AJ, Weaver JB. Simultaneous quantification of multiple magnetic nanoparticles. NANOTECHNOLOGY 2010; 21:455101. [PMID: 20947953 PMCID: PMC3786441 DOI: 10.1088/0957-4484/21/45/455101] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Distinct magnetic nanoparticle designs can have unique spectral responses to an AC magnetic field in a technique called the magnetic spectroscopy of Brownian motion (MSB). The spectra of the particles have been measured using desktop spectrometers and in vivo measurements. If multiple particle types are present in a region of interest, the unique spectral signatures allow for the simultaneous quantification of the various particles. We demonstrate such a potential experimentally with up to three particle types. This ability to concurrently detect multiple particles will enable new biomedical applications.
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Affiliation(s)
- Adam M Rauwerdink
- Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA.
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