1
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Tian Z, Gan C, Fan L, Wang J, Zhao L. Elastic‐inertial separation of microparticle in a gradually contracted microchannel. Electrophoresis 2022; 43:2217-2226. [DOI: 10.1002/elps.202200083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 07/19/2022] [Accepted: 08/13/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Zhuang‐Zhuang Tian
- School of Mechanical Engineering Xi'an Jiaotong University Xi'an Shaanxi P. R. China
| | - Chong‐Shan Gan
- School of Mechanical Engineering Xi'an Jiaotong University Xi'an Shaanxi P. R. China
| | - Liang‐Liang Fan
- School of Mechanical Engineering Xi'an Jiaotong University Xi'an Shaanxi P. R. China
- School of Food Equipment Engineering and Science (FEES) Xi'an Jiaotong University Xi'an Shaanxi P. R. China
| | - Ji‐Chang Wang
- Department of Vascular Surgery The First Affiliated Hospital of Xi'an Jiaotong University Xi'an Shaanxi P. R. China
| | - Liang Zhao
- State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an Shaanxi P. R. China
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2
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The Origins and the Current Applications of Microfluidics-Based Magnetic Cell Separation Technologies. MAGNETOCHEMISTRY 2022. [DOI: 10.3390/magnetochemistry8010010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The magnetic separation of cells based on certain traits has a wide range of applications in microbiology, immunology, oncology, and hematology. Compared to bulk separation, performing magnetophoresis at micro scale presents advantages such as precise control of the environment, larger magnetic gradients in miniaturized dimensions, operational simplicity, system portability, high-throughput analysis, and lower costs. Since the first integration of magnetophoresis and microfluidics, many different approaches have been proposed to magnetically separate cells from suspensions at the micro scale. This review paper aims to provide an overview of the origins of microfluidic devices for magnetic cell separation and the recent technologies and applications grouped by the targeted cell types. For each application, exemplary experimental methods and results are discussed.
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3
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Giacometti M, Monticelli M, Piola M, Milesi F, Coppadoro L, Giuliani E, Jacchetti E, Raimondi MT, Ferrari G, Antinori S, Fiore GB, Bertacco R. On-chip magnetophoretic capture in a model of malaria-infected red blood cells. Biotechnol Bioeng 2022; 119:1129-1141. [PMID: 34984673 PMCID: PMC9306751 DOI: 10.1002/bit.28030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 12/14/2021] [Accepted: 12/22/2021] [Indexed: 11/06/2022]
Abstract
The search for new rapid diagnostic tests for malaria is a priority for developing an efficient strategy to fight this endemic disease, which affects more than 3 billion people worldwide. In this paper, we characterize systematically an easy-to-operate lab-on-chip, designed for the magnetophoretic capture of malaria-infected red blood cells. The method relies on the positive magnetic susceptibility of infected red blood cells with respect to blood plasma. A matrix of nickel posts fabricated in a silicon chip placed face down is aimed at attracting infected cells, while healthy cells sediment on a glass slide under the action of gravity. Using a model of infected red blood cells, i.e. erythrocytes with methaemoglobin, we obtained a capture efficiency of about 70% after 10 minutes in static conditions. By proper agitation, the capture efficiency reached 85% after just 5 minutes. Sample preparation requires only a 1:10 volume dilution of whole blood, previously treated with heparin, in a phosphate buffered solution. Nonspecific attraction of untreated red blood cells was not observed in the same time interval. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- M Giacometti
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, 20133, Milano, Italy
| | - M Monticelli
- Department of Physics, Politecnico di Milano, 20133, Milano, Italy
| | - M Piola
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, 20133, Milano, Italy
| | - F Milesi
- Department of Physics, Politecnico di Milano, 20133, Milano, Italy
| | - L Coppadoro
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, 20133, Milano, Italy
| | - E Giuliani
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, 20133, Milano, Italy
| | - E Jacchetti
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, 20133, Milano, Italy.,Interuniversity Center for the promotion of the 3Rs principles in teaching and research, 56122, Pisa, Italy
| | - M T Raimondi
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, 20133, Milano, Italy.,Interuniversity Center for the promotion of the 3Rs principles in teaching and research, 56122, Pisa, Italy
| | - G Ferrari
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, 20133, Milano, Italy
| | - S Antinori
- Department of Biomedical and Clinical Sciences "Luigi Sacco", Università degli Studi di Milano, 20157, Milano, Italy
| | - G B Fiore
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, 20133, Milano, Italy.,Interuniversity Center for the promotion of the 3Rs principles in teaching and research, 56122, Pisa, Italy
| | - R Bertacco
- Department of Physics, Politecnico di Milano, 20133, Milano, Italy.,IFN-CNR, c/o Politecnico di Milano, 20133, Milano, Italy
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4
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Magnetophoretic and spectral characterization of oxyhemoglobin and deoxyhemoglobin: Chemical versus enzymatic processes. PLoS One 2021; 16:e0257061. [PMID: 34478473 PMCID: PMC8415601 DOI: 10.1371/journal.pone.0257061] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 08/21/2021] [Indexed: 11/19/2022] Open
Abstract
A new method for hemoglobin (Hb) deoxygenation, in suspension or within red blood cells (RBCs) is described using the commercial enzyme product, EC-Oxyrase®. The enzymatic deoxygenation method has several advantages over established deoxygenation methodologies, such as avoiding side reactions that produce methemoglobin (metHb), thus eliminating the need for an inert deoxygenation gas and airtight vessel, and facilitates easy re-oxygenation of Hb/RBCs by washing with a buffer that contains dissolved oxygen (DO). The UV-visible spectra of deoxyHb and metHb purified from human RBCs using three different preparation methods (sodium dithionite [to produce deoxyHb], sodium nitrite [to produce metHb], and EC-Oxyrase® [to produce deoxyHb]) show the high purity of deoxyHb prepared using EC-Oxyrase® (with little to no metHb or hemichrome production from side reactions). The oxyHb deoxygenation time course of EC-Oxyrase® follows first order reaction kinetics. The paramagnetic characteristics of intracellular Hb in RBCs were compared using Cell Tracking Velocimetry (CTV) for healthy and sickle cell disease (SCD) donors and oxygen equilibrium curves show that the function of healthy RBCs is unchanged after EC-Oxyrase® treatment. The results confirm that this enzymatic approach to deoxygenation produces pure deoxyHb, can be re-oxygenated easily, prepared aerobically and has similar paramagnetic mobility to existing methods of producing deoxyHb and metHb.
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5
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Bacon K, Lavoie A, Rao BM, Daniele M, Menegatti S. Past, Present, and Future of Affinity-based Cell Separation Technologies. Acta Biomater 2020; 112:29-51. [PMID: 32442784 PMCID: PMC10364325 DOI: 10.1016/j.actbio.2020.05.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 04/29/2020] [Accepted: 05/05/2020] [Indexed: 02/06/2023]
Abstract
Progress in cell purification technology is critical to increase the availability of viable cells for therapeutic, diagnostic, and research applications. A variety of techniques are now available for cell separation, ranging from non-affinity methods such as density gradient centrifugation, dielectrophoresis, and filtration, to affinity methods such as chromatography, two-phase partitioning, and magnetic-/fluorescence-assisted cell sorting. For clinical and analytical procedures that require highly purified cells, the choice of cell purification method is crucial, since every method offers a different balance between yield, purity, and bioactivity of the cell product. For most applications, the requisite purity is only achievable through affinity methods, owing to the high target specificity that they grant. In this review, we discuss past and current methods for developing cell-targeting affinity ligands and their application in cell purification, along with the benefits and challenges associated with different purification formats. We further present new technologies, like stimuli-responsive ligands and parallelized microfluidic devices, towards improving the viability and throughput of cell products for tissue engineering and regenerative medicine. Our comparative analysis provides guidance in the multifarious landscape of cell separation techniques and highlights new technologies that are poised to play a key role in the future of cell purification in clinical settings and the biotech industry. STATEMENT OF SIGNIFICANCE: Technologies for cell purification have served science, medicine, and industrial biotechnology and biomanufacturing for decades. This review presents a comprehensive survey of this field by highlighting the scope and relevance of all known methods for cell isolation, old and new alike. The first section covers the main classes of target cells and compares traditional non-affinity and affinity-based purification techniques, focusing on established ligands and chromatographic formats. The second section presents an excursus of affinity-based pseudo-chromatographic and non-chromatographic technologies, especially focusing on magnetic-activated cell sorting (MACS) and fluorescence-activated cell sorting (FACS). Finally, the third section presents an overview of new technologies and emerging trends, highlighting how the progress in chemical, material, and microfluidic sciences has opened new exciting avenues towards high-throughput and high-purity cell isolation processes. This review is designed to guide scientists and engineers in their choice of suitable cell purification techniques for research or bioprocessing needs.
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Affiliation(s)
- Kaitlyn Bacon
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, USA
| | - Ashton Lavoie
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, USA
| | - Balaji M Rao
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, USA; Biomanufacturing Training and Education Center (BTEC), North Carolina State University, Raleigh, NC 27695-7928, USA
| | - Michael Daniele
- Joint Department of Biomedical Engineering, North Carolina State University - University of North Carolina Chapel Hill, North Carolina, United States
| | - Stefano Menegatti
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, USA; Biomanufacturing Training and Education Center (BTEC), North Carolina State University, Raleigh, NC 27695-7928, USA.
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6
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Bryngelson SH, Guéniat F, Freund JB. Irregular dynamics of cellular blood flow in a model microvessel. Phys Rev E 2019; 100:012203. [PMID: 31499874 DOI: 10.1103/physreve.100.012203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Indexed: 11/07/2022]
Abstract
The flow of red blood cells within cylindrical vessels is complex and irregular, so long as the vessel diameter is somewhat larger than the nominal cell size. Long-time-series simulations, in which cells flow 10^{5} vessel diameters, are used to characterize the chaotic kinematics, particularly to inform reduced-order models. The simulation model used includes full coupling between the elastic red blood cell membranes and surrounding viscous fluid, providing a faithful representation of the cell-scale dynamics. Results show that the flow has neither classifiable recurrent features nor a dominant frequency. Instead, its kinematics are sensitive to the initial flow configuration in a way consistent with chaos and Lagrangian turbulence. Phase-space reconstructions show that a low-dimensional attractor does not exist, so the observed long-time dynamics are effectively stochastic. Based on this, a simple Markov chain model for the dynamics is introduced and shown to reproduce the statistics of the cell positions.
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Affiliation(s)
- Spencer H Bryngelson
- Department of Mechanical Science & Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Florimond Guéniat
- The Center for Exascale Simulation of Plasma-coupled Combustion, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Jonathan B Freund
- Department of Mechanical Science & Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.,Department of Aerospace Engineering University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
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7
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Rallabandi B, Nunes JK, Perazzo A, Gershtein S, Stone HA. Representative subsampling of sedimenting blood. Proc Math Phys Eng Sci 2019; 475:20190223. [PMID: 31423102 DOI: 10.1098/rspa.2019.0223] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 06/10/2019] [Indexed: 11/12/2022] Open
Abstract
It is often necessary to extract a small amount of a suspension, such as blood, from a larger sample of the same material for the purposes of diagnostics, testing or imaging. A practical challenge is that the cells in blood sediment noticeably on the time scale of a few minutes, making a representative subsampling of the original sample challenging. Guided by experimental data, we develop a Kynch sedimentation model to discuss design considerations that ensure a representative subsampling of blood, from a container of constant cross-sectional area, for the entire range of physiologically relevant hematocrit over a specified time of interest. Additionally, we show that this design may be modified to exploit the sedimentation and perform subsampling to achieve either higher or lower hematocrit relative to that of the original sample. Thus, our method provides a simple tool to either concentrate or dilute small quantities of blood or other sedimenting suspensions.
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Affiliation(s)
- Bhargav Rallabandi
- Department of Mechanical Engineering, University of California, Riverside, CA 92521, USA.,Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA
| | - Janine K Nunes
- Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA
| | - Antonio Perazzo
- Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA
| | | | - Howard A Stone
- Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA
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8
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Markwalter C, Kantor AG, Moore CP, Richardson KA, Wright DW. Inorganic Complexes and Metal-Based Nanomaterials for Infectious Disease Diagnostics. Chem Rev 2019; 119:1456-1518. [PMID: 30511833 PMCID: PMC6348445 DOI: 10.1021/acs.chemrev.8b00136] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Indexed: 12/12/2022]
Abstract
Infectious diseases claim millions of lives each year. Robust and accurate diagnostics are essential tools for identifying those who are at risk and in need of treatment in low-resource settings. Inorganic complexes and metal-based nanomaterials continue to drive the development of diagnostic platforms and strategies that enable infectious disease detection in low-resource settings. In this review, we highlight works from the past 20 years in which inorganic chemistry and nanotechnology were implemented in each of the core components that make up a diagnostic test. First, we present how inorganic biomarkers and their properties are leveraged for infectious disease detection. In the following section, we detail metal-based technologies that have been employed for sample preparation and biomarker isolation from sample matrices. We then describe how inorganic- and nanomaterial-based probes have been utilized in point-of-care diagnostics for signal generation. The following section discusses instrumentation for signal readout in resource-limited settings. Next, we highlight the detection of nucleic acids at the point of care as an emerging application of inorganic chemistry. Lastly, we consider the challenges that remain for translation of the aforementioned diagnostic platforms to low-resource settings.
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Affiliation(s)
| | | | | | | | - David W. Wright
- Department of Chemistry, Vanderbilt
University, Nashville, Tennessee 37235, United States
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9
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Sun J, Moore L, Xue W, Kim J, Zborowski M, Chalmers JJ. Correlation of simulation/finite element analysis to the separation of intrinsically magnetic spores and red blood cells using a microfluidic magnetic deposition system. Biotechnol Bioeng 2018; 115:1288-1300. [PMID: 29337367 PMCID: PMC6338348 DOI: 10.1002/bit.26550] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 11/11/2017] [Accepted: 01/09/2018] [Indexed: 01/08/2023]
Abstract
Magnetic separation of cells has been, and continues to be, widely used in a variety of applications, ranging from healthcare diagnostics to detection of food contamination. Typically, these technologies require cells labeled with antibody magnetic particle conjugate and a high magnetic energy gradient created in the flow containing the labeled cells (i.e., a column packed with magnetically inducible material), or dense packing of magnetic particles next to the flow cell. Such designs, while creating high magnetic energy gradients, are not amenable to easy, highly detailed, mathematic characterization. Our laboratories have been characterizing and developing analysis and separation technology that can be used on intrinsically magnetic cells or spores which are typically orders of magnitude weaker than typically immunomagnetically labeled cells. One such separation system is magnetic deposition microscopy (MDM) which not only separates cells, but deposits them in specific locations on slides for further microscopic analysis. In this study, the MDM system has been further characterized, using finite element and computational fluid mechanics software, and separation performance predicted, using a model which combines: 1) the distribution of the intrinsic magnetophoretic mobility of the cells (spores); 2) the fluid flow within the separation device; and 3) accurate maps of the values of the magnetic field (max 2.27 T), and magnetic energy gradient (max of 4.41 T2 /mm) within the system. Guided by this model, experimental studies indicated that greater than 95% of the intrinsically magnetic Bacillus spores can be separated with the MDM system. Further, this model allows analysis of cell trajectories which can assist in the design of higher throughput systems.
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Affiliation(s)
- Jianxin Sun
- William G. Lowrie Department of Chemical and Biomolecular Engineering Director, Analytical Cytometry Shared Resource, The OSU Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
| | - Lee Moore
- Department of Biomedical Engineering Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
| | - Wei Xue
- William G. Lowrie Department of Chemical and Biomolecular Engineering Director, Analytical Cytometry Shared Resource, The OSU Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
| | - James Kim
- William G. Lowrie Department of Chemical and Biomolecular Engineering Director, Analytical Cytometry Shared Resource, The OSU Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
| | - Maciej Zborowski
- Department of Biomedical Engineering Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
| | - Jeffrey J Chalmers
- William G. Lowrie Department of Chemical and Biomolecular Engineering Director, Analytical Cytometry Shared Resource, The OSU Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
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10
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Numerical Simulation of Red Blood Cell-Induced Platelet Transport in Saccular Aneurysms. APPLIED SCIENCES-BASEL 2017. [DOI: 10.3390/app7050484] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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11
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Wu WT, Martin AB, Gandini A, Aubry N, Massoudi M, Antaki JF. Design of microfluidic channels for magnetic separation of malaria-infected red blood cells. MICROFLUIDICS AND NANOFLUIDICS 2016; 20:41. [PMID: 27761107 PMCID: PMC5066816 DOI: 10.1007/s10404-016-1707-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Accepted: 01/09/2016] [Indexed: 05/25/2023]
Abstract
This study is motivated by the development of a blood cell filtration device for removal of malaria-infected, parasitized red blood cells (pRBCs). The blood was modeled as a multi-component fluid using the computational fluid dynamics discrete element method (CFD-DEM), wherein plasma was treated as a Newtonian fluid and the red blood cells (RBCs) were modeled as soft-sphere solid particles which move under the influence of drag, collisions with other RBCs, and a magnetic force. The CFD-DEM model was first validated by a comparison with experimental data from Han et al. 2006 (Han and Frazier 2006) involving a microfluidic magnetophoretic separator for paramagnetic deoxygenated blood cells. The computational model was then applied to a parametric study of a parallel-plate separator having hematocrit of 40% with a 10% of the RBCs as pRBCs. Specifically, we investigated the hypothesis of introducing an upstream constriction to the channel to divert the magnetic cells within the near-wall layer where the magnetic force is greatest. Simulations compared the efficacy of various geometries upon the stratification efficiency of the pRBCs. For a channel with nominal height of 100 µm, the addition of an upstream constriction of 80% improved the proportion of pRBCs retained adjacent to the magnetic wall (separation efficiency) by almost 2 fold, from 26% to 49%. Further addition of a downstream diffuser reduced remixing, hence improved separation efficiency to 72%. The constriction introduced a greater pressure drop (from 17 to 495 Pa), which should be considered when scaling-up this design for a clinical-sized system. Overall, the advantages of this design include its ability to accommodate physiological hematocrit and high throughput - which is critical for clinical implementation as a blood-filtration system.
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Affiliation(s)
- Wei-Tao Wu
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
| | - Andrea Blue Martin
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
| | - Alberto Gandini
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
| | - Nadine Aubry
- Department of Mechanical Engineering, Northeastern University, Boston, MA, 02115, USA
| | - Mehrdad Massoudi
- U. S. Department of Energy, National Energy Technology Laboratory (NETL), PA, 15236, USA
| | - James F. Antaki
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
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12
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Pershina AG, Saltykova IV, Ivanov VV, Perina EA, Demin AM, Shevelev OB, Buzueva II, Gutakovskii AK, Vtorushin SV, Ganebnykh IN, Krasnov VP, Sazonov AE, Ogorodova LM. Hemozoin "knobs" in Opisthorchis felineus infected liver. Parasit Vectors 2015; 8:459. [PMID: 26382743 PMCID: PMC4574221 DOI: 10.1186/s13071-015-1061-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 08/27/2015] [Indexed: 12/02/2022] Open
Abstract
Background Hemozoin is the pigment produced by some blood-feeding parasites. It demonstrates high diagnostic and therapeutic potential. In this work the formation of co-called hemozoin “knobs” – the bile duct ectasia filled up by hemozoin pigment - in Opisthorhis felineus infected hamster liver has been observed. Methods The O. felineus infected liver was examined by histological analysis and magnetic resonance imaging (MRI). The pigment hemozoin was identified by Fourier transform infrared spectroscopy and high resolution electrospray ionization mass spectrometry analysis. Hemozoin crystals were characterised by high resolution transmission electron microscopy. Results Hemozoin crystals produced by O. felineus have average length 403 nm and the length-to-width ratio equals 2.0. The regurgitation of hemozoin from parasitic fluke during infection leads to formation of bile duct ectasia. The active release of hemozoin from O. felineus during in vitro incubation has also been evidenced. It has been shown that the hemozoin knobs can be detected by magnetic resonance imaging. Conclusions In the paper for the first time the characterisation of hemozoin pigment extracted from liver fluke O. felineus has been conducted. The role of hemozoin in the modification of immune response by opisthorchiasis is assumed. Electronic supplementary material The online version of this article (doi:10.1186/s13071-015-1061-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Alexandra G Pershina
- Siberian State Medical University, 2, Moskovsky trakt, 634050, Tomsk, Russia. .,National Research Tomsk Polytechnic University, 30, Lenina Ave, Tomsk, 634050, Russia.
| | - Irina V Saltykova
- Siberian State Medical University, 2, Moskovsky trakt, 634050, Tomsk, Russia. .,National Research Tomsk State University, 36, Lenina Ave, Tomsk, 634050, Russia.
| | - Vladimir V Ivanov
- Siberian State Medical University, 2, Moskovsky trakt, 634050, Tomsk, Russia.
| | - Ekaterina A Perina
- Siberian State Medical University, 2, Moskovsky trakt, 634050, Tomsk, Russia.
| | - Alexander M Demin
- Postovsky Institute of Organic Synthesis, UB RAS, 22, S. Kovalevskoy St, 620137, Yekaterinburg, Russia.
| | - Oleg B Shevelev
- Institute of Cytology and Genetics, SB RAS, 10, Lavrentyev Ave, 630090, Novosibirsk, Russia.
| | - Irina I Buzueva
- Federal State Budgetary Scientific Institution "Scientific Research Institute of Physiology and Basic Medicine", 4, Timakova St, 630117, Novosibirsk, Russia.
| | - Anton K Gutakovskii
- Rzhanov Institute of Semiconductor Physics, SB RAS, 13, Lavrentyev Ave, Novosibirsk, 630090, Russia.
| | - Sergey V Vtorushin
- Siberian State Medical University, 2, Moskovsky trakt, 634050, Tomsk, Russia.
| | - Ilya N Ganebnykh
- Postovsky Institute of Organic Synthesis, UB RAS, 22, S. Kovalevskoy St, 620137, Yekaterinburg, Russia.
| | - Victor P Krasnov
- Postovsky Institute of Organic Synthesis, UB RAS, 22, S. Kovalevskoy St, 620137, Yekaterinburg, Russia.
| | - Alexey E Sazonov
- Siberian State Medical University, 2, Moskovsky trakt, 634050, Tomsk, Russia.
| | - Ludmila M Ogorodova
- Siberian State Medical University, 2, Moskovsky trakt, 634050, Tomsk, Russia.
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13
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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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14
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Wu WT, Aubry N, Massoudi M, Kim J, Antaki JF. A numerical study of blood flow using mixture theory. INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE 2014; 76:56-72. [PMID: 24791016 PMCID: PMC4002018 DOI: 10.1016/j.ijengsci.2013.12.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
In this paper, we consider the two dimensional flow of blood in a rectangular microfluidic channel. We use Mixture Theory to treat this problem as a two-component system: One component is the red blood cells (RBCs) modeled as a generalized Reiner-Rivlin type fluid, which considers the effects of volume fraction (hematocrit) and influence of shear rate upon viscosity. The other component, plasma, is assumed to behave as a linear viscous fluid. A CFD solver based on OpenFOAM® was developed and employed to simulate a specific problem, namely blood flow in a two dimensional micro-channel, is studied. Finally to better understand this two-component flow system and the effects of the different parameters, the equations are made dimensionless and a parametric study is performed.
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Affiliation(s)
- Wei-Tao Wu
- Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA
| | - Nadine Aubry
- Department of Mechanical Engineering, Northeastern University, Boston, MA 02115, USA
| | - Mehrdad Massoudi
- U. S. Department of Energy, National Energy Technology Laboratory (NETL), P.O. Box 10940, Pittsburgh, PA 15236, USA
| | - Jeongho Kim
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA
| | - James F. Antaki
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA
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Coronado LM, Nadovich CT, Spadafora C. Malarial hemozoin: from target to tool. Biochim Biophys Acta Gen Subj 2014; 1840:2032-41. [PMID: 24556123 DOI: 10.1016/j.bbagen.2014.02.009] [Citation(s) in RCA: 145] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Revised: 01/26/2014] [Accepted: 02/10/2014] [Indexed: 02/07/2023]
Abstract
BACKGROUND Malaria is an extremely devastating disease that continues to affect millions of people each year. A distinctive attribute of malaria infected red blood cells is the presence of malarial pigment or the so-called hemozoin. Hemozoin is a biocrystal synthesized by Plasmodium and other blood-feeding parasites to avoid the toxicity of free heme derived from the digestion of hemoglobin during invasion of the erythrocytes. SCOPE OF REVIEW Hemozoin is involved in several aspects of the pathology of the disease as well as in important processes such as the immunogenicity elicited. It is known that the once best antimalarial drug, chloroquine, exerted its effect through interference with the process of hemozoin formation. In the present review we explore what is known about hemozoin, from hemoglobin digestion, to its final structural analysis, to its physicochemical properties, its role in the disease and notions of the possible mechanisms that could kill the parasite by disrupting the synthesis or integrity of this remarkable crystal. MAJOR CONCLUSIONS The importance and peculiarities of this biocrystal have given researchers a cause to consider it as a target for new antimalarials and to use it through unconventional approaches for diagnostics and therapeutics against the disease. GENERAL SIGNIFICANCE Hemozoin plays an essential role in the biology of malarial disease. Innovative ideas could use all the existing data on the unique chemical and biophysical properties of this macromolecule to come up with new ways of combating malaria.
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Affiliation(s)
- Lorena M Coronado
- Centro de Biología Celular y Molecular de Enfermedades, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología, Ciudad del Saber, Panama; Department of Biotechnology, Acharya Nagarjuna University, Guntur 522 510, A.P., India
| | | | - Carmenza Spadafora
- Centro de Biología Celular y Molecular de Enfermedades, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología, Ciudad del Saber, Panama.
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