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Gorobets O, Gorobets S, Sharai I, Polyakova T, Zablotskii V. Interaction of magnetic fields with biogenic magnetic nanoparticles on cell membranes: Physiological consequences for organisms in health and disease. Bioelectrochemistry 2023; 151:108390. [PMID: 36746089 DOI: 10.1016/j.bioelechem.2023.108390] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 01/25/2023] [Accepted: 01/27/2023] [Indexed: 02/04/2023]
Abstract
The interaction mechanisms between magnetic fields (MFs) and living systems, which remained hidden for more than a hundred years, continue to attract the attention of researchers from various disciplines: physics, biology, medicine, and life sciences. Revealing these mechanisms at the cellular level would allow to understand complex cell systems and could help to explain and predict cell responses to MFs, intervene in organisms' reactions to MFs of different strengths, directions, and spatial distributions. We suggest several new physical mechanisms of the MF impacts on endothelial and cancer cells by the MF interaction with chains of biogenic and non-biogenic magnetic nanoparticles on cell membranes. The revealed mechanisms can play a hitherto unexpected role in creating physiological responses of organisms to externally applied MFs. We have also a set of theoretical models that can predict how cells will individually and collectively respond to a MF exposure. The physiological sequences of the MF - cell interactions for organisms in health and disease are discussed. The described effects and their underlying mechanisms are general and should take place in a large family of biological effects of MFs. The results are of great importance for further developing novel approaches in cell biology, cell therapy and medicine.
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Affiliation(s)
- Oksana Gorobets
- National Technical University of Ukraine, "Igor Sikorsky Kyiv Polytechnic Institute", Ukraine; Institute of Magnetism of NAS and MES of Ukraine, Ukraine.
| | - Svitlana Gorobets
- National Technical University of Ukraine, "Igor Sikorsky Kyiv Polytechnic Institute", Ukraine
| | - Iryna Sharai
- National Technical University of Ukraine, "Igor Sikorsky Kyiv Polytechnic Institute", Ukraine; Institute of Magnetism of NAS and MES of Ukraine, Ukraine
| | - Tatyana Polyakova
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Vitalii Zablotskii
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic; International Magnetobiology Frontier Research Center (iMFRC), Science Island, China
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Vennettilli M, González L, Hilgert N, Mugler A. Autologous chemotaxis at high cell density. Phys Rev E 2022; 106:024413. [PMID: 36109906 DOI: 10.1103/physreve.106.024413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 06/24/2022] [Indexed: 06/15/2023]
Abstract
Autologous chemotaxis, in which cells secrete and detect molecules to determine the direction of fluid flow, is thwarted at high cell density because molecules from other cells interfere with a given cell's signal. Using a minimal model of autologous chemotaxis, we determine the cell density at which sensing fails, and we find that it agrees with experimental observations of metastatic cancer cells. To understand this agreement, we derive a physical limit to autologous chemotaxis in terms of the cell density, the Péclet number, and the lengthscales of the cell and its environment. Surprisingly, in an environment that is uniformly oversaturated in the signaling molecule, we find that not only can sensing fail, but it can be reversed, causing backwards cell motion. Our results get to the heart of the competition between chemical and mechanical cellular sensing, and they shed light on a sensory strategy employed by cancer cells in dense tumor environments.
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Affiliation(s)
- Michael Vennettilli
- Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
- Department of Physics and Astronomy, Purdue University, West Lafayette, Indiana 47907, USA
| | - Louis González
- Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
| | - Nicholas Hilgert
- Department of Physics and Astronomy, Purdue University, West Lafayette, Indiana 47907, USA
| | - Andrew Mugler
- Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
- Department of Physics and Astronomy, Purdue University, West Lafayette, Indiana 47907, USA
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Chiaramello E, Fiocchi S, Bonato M, Gallucci S, Benini M, Tognola G, Ravazzani P, Parazzini M. Contactless Cell Permeabilization by Time-Varying Magnetic fields: Modelling Transmembrane Potential and Mechanical Stress in in- vitro Experimental Set-Up. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2021; 2021:4303-4305. [PMID: 34892173 DOI: 10.1109/embc46164.2021.9629570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The feasibility of using time-varying magnetic field as a contactless cells permeabilization method was demonstrated by experimental results, but the underlying mechanism is still poorly understood. In this study a numerical analysis of the transmembrane potential (TMP) at cell membranes during permeabilization by time-varying magnetic fields was proposed, and a first quantification of mechanical stress induced by the magnetic and electric fields and hypothesized to play an important role in the permeabilization mechanism was carried out. TMP values induced by typical in-vitro experimental conditions were far below the values needed for membrane permeabilization, with a strong dependence on distance of the cell from the coil. The preliminary assessment of the mechanical pressure and potential deformation of cells showed that stress values evaluated in conditions in which TMP values were too low to cause membrane permeabilization were comparable to those known to influence the pore opening mechanisms.Clinical Relevance- Results represent a significant step towards a better comprehension of the mechanism underlying cell membrane permeabilization by time-varying magnetic fields.
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Cell transmembrane potential in contactless permeabilization by time-varying magnetic fields. Comput Biol Med 2021; 135:104587. [PMID: 34171642 DOI: 10.1016/j.compbiomed.2021.104587] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 06/10/2021] [Accepted: 06/14/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Although experimental results proved the feasibility of using time-varying magnetic field as a contactless cells permeabilization method, the underlying mechanism is still poorly understood. In this study a numerical analysis of the time-dependent transmembrane potential (TMP) at cell membranes during permeabilization by time-varying magnetic fields was proposed, and a first quantification of mechanical stress induced by the magnetic and electric fields, hypothesized to play an important role in the permeabilization mechanism, was carried out. METHODS Starting from the simulation of real in vitro experimental conditions, the analysis was widened quantifying the influence of pulse frequency, cell dimension and distance of the cell from the magnetic field source. The mechanical pressure on cell membrane due to the interaction between free charges and induced electric field and due to the gradient of the magnetic field was quantified in all those conditions in which the TMP values were not high enough to cause membrane permeabilization. RESULTS TMP values induced by typical in-vitro experimental conditions were far below the values needed for membrane permeabilization, with a strong dependence on pulse frequency and distance of the cell from the coil. CONCLUSION The preliminary assessment of the mechanical pressure on cell membrane showed that stress values evaluated in conditions in which TMP values were too low to cause membrane permeabilization were comparable to those known to influence the pores opening mechanisms. Results represent a significant step towards a better comprehension of the mechanism underlying cell membrane permeabilization by time-varying magnetic fields.
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Fruleux A, Verger S, Boudaoud A. Feeling Stressed or Strained? A Biophysical Model for Cell Wall Mechanosensing in Plants. FRONTIERS IN PLANT SCIENCE 2019; 10:757. [PMID: 31244875 PMCID: PMC6581727 DOI: 10.3389/fpls.2019.00757] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 05/24/2019] [Indexed: 05/21/2023]
Abstract
Mechanical signals have recently emerged as a major cue in plant morphogenesis, notably influencing cytoskeleton organization, gene expression, protein polarity, or cell division. Although many putative mechanosensing proteins have been identified, it is unclear what mechanical cue they might sense and how this would occur. Here we briefly explain the notions of mechanical stress and strain. We present the challenges to understand their sensing by plants, focusing on the cell wall and the plasma membrane, and we review putative mechanosensing structures. We propose minimal biophysical models of mechanosensing, revealing the modes of mechanosensing according to mechanosensor lifetime, threshold force for mechanosensor dissociation, and type of association between the mechanosensor and the cell wall, as the sensor may be associated to a major load-bearing structure such as cellulose or to a minor load-bearing structure such as pectins or the plasma membrane. Permanent strain, permanent expansion, and relatively slow variations thereof are sensed in all cases; variations of stress are sensed in all cases; permanent stress is sensed only in the following specific cases: sensors associated to minor load-bearing structures slowly relaxing in a growing wall, long-lived sensors with high dissociation force and associated to major-load-bearing structures, and sensors with low dissociation force associated to major-load-baring structures behaving elastically. We also find that all sensors respond to variations in the composition or the mechanical properties of the cell wall. The level of sensing is modulated by the properties of all of mechanosensor, cell wall components, and plasma membrane. Although our models are minimal and not fully realistic, our results yield a framework to start investigating the possible functions of putative mechanosensors.
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Affiliation(s)
- Antoine Fruleux
- Laboratoire de Reproduction et Développement des Plantes, Université de Lyon, ENS de Lyon, UCBL, INRA, CNRS, Lyon, France
| | - Stéphane Verger
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, Umeå, Sweden
| | - Arezki Boudaoud
- Laboratoire de Reproduction et Développement des Plantes, Université de Lyon, ENS de Lyon, UCBL, INRA, CNRS, Lyon, France
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Abstract
![]()
Hydrodynamic phenomena
are ubiquitous in living organisms and can
be used to manipulate cells or emulate physiological microenvironments
experienced in vivo. Hydrodynamic effects influence multiple cellular
properties and processes, including cell morphology, intracellular
processes, cell–cell signaling cascades and reaction kinetics,
and play an important role at the single-cell, multicellular, and
organ level. Selected hydrodynamic effects can also be leveraged to
control mechanical stresses, analyte transport, as well as local temperature
within cellular microenvironments. With a better understanding of
fluid mechanics at the micrometer-length scale and the advent of microfluidic
technologies, a new generation of experimental tools that provide
control over cellular microenvironments and emulate physiological
conditions with exquisite accuracy is now emerging. Accordingly, we
believe that it is timely to assess the concepts underlying hydrodynamic
control of cellular microenvironments and their applications and provide
some perspective on the future of such tools in in vitro cell-culture
models. Generally, we describe the interplay between living cells,
hydrodynamic stressors, and fluid flow-induced effects imposed on
the cells. This interplay results in a broad range of chemical, biological,
and physical phenomena in and around cells. More specifically, we
describe and formulate the underlying physics of hydrodynamic phenomena
affecting both adhered and suspended cells. Moreover, we provide an
overview of representative studies that leverage hydrodynamic effects
in the context of single-cell studies within microfluidic systems.
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Affiliation(s)
- Deborah Huber
- IBM Research-Zürich , Säumerstrasse 4, 8803 Rüschlikon, Switzerland.,Institute of Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir-Prelog-Weg 1, 8093 Zürich, Switzerland
| | - Ali Oskooei
- IBM Research-Zürich , Säumerstrasse 4, 8803 Rüschlikon, Switzerland
| | - Xavier Casadevall I Solvas
- Institute of Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir-Prelog-Weg 1, 8093 Zürich, Switzerland
| | - Andrew deMello
- Institute of Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir-Prelog-Weg 1, 8093 Zürich, Switzerland
| | - Govind V Kaigala
- IBM Research-Zürich , Säumerstrasse 4, 8803 Rüschlikon, Switzerland
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Plouraboué F, Thiam EI, Delmotte B, Climent E. Identification of internal properties of fibres and micro-swimmers. Proc Math Phys Eng Sci 2017; 473:20160517. [PMID: 28265186 PMCID: PMC5312122 DOI: 10.1098/rspa.2016.0517] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Accepted: 12/12/2016] [Indexed: 11/12/2022] Open
Abstract
In this paper, we address the identifiability of constitutive parameters of passive or active micro-swimmers. We first present a general framework for describing fibres or micro-swimmers using a bead-model description. Using a kinematic constraint formulation to describe fibres, flagellum or cilia, we find explicit linear relationship between elastic constitutive parameters and generalized velocities from computing contact forces. This linear formulation then permits one to address explicitly identifiability conditions and solve for parameter identification. We show that both active forcing and passive parameters are both identifiable independently but not simultaneously. We also provide unbiased estimators for generalized elastic parameters in the presence of Langevin-like forcing with Gaussian noise using a Bayesian approach. These theoretical results are illustrated in various configurations showing the efficiency of the proposed approach for direct parameter identification. The convergence of the proposed estimators is successfully tested numerically.
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Affiliation(s)
- Franck Plouraboué
- Institut de Mécanique des Fluides de Toulouse (IMFT), Université de Toulouse, CNRS, INPT, UPS, Allée du Pr. Camille Soula, 31400 Toulouse, France
| | - E. Ibrahima Thiam
- Institut de Mécanique des Fluides de Toulouse (IMFT), Université de Toulouse, CNRS, INPT, UPS, Allée du Pr. Camille Soula, 31400 Toulouse, France
| | - Blaise Delmotte
- Institut de Mécanique des Fluides de Toulouse (IMFT), Université de Toulouse, CNRS, INPT, UPS, Allée du Pr. Camille Soula, 31400 Toulouse, France
| | - Eric Climent
- Institut de Mécanique des Fluides de Toulouse (IMFT), Université de Toulouse, CNRS, INPT, UPS, Allée du Pr. Camille Soula, 31400 Toulouse, France
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8
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Computational analysis of amoeboid swimming at low Reynolds number. J Math Biol 2015; 72:1893-926. [DOI: 10.1007/s00285-015-0925-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Revised: 07/21/2015] [Indexed: 10/23/2022]
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Zhu X, Bouffanais R, Yue DKP. Interplay between motility and cell-substratum adhesion in amoeboid cells. BIOMICROFLUIDICS 2015; 9:054112. [PMID: 26487898 PMCID: PMC4592429 DOI: 10.1063/1.4931762] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Accepted: 09/15/2015] [Indexed: 05/07/2023]
Abstract
The effective migration of amoeboid cells requires a fine regulation of cell-substratum adhesion. These entwined processes have been shown to be regulated by a host of biophysical and biochemical cues. Here, we reveal the pivotal role played by calcium-based mechanosensation in the active regulation of adhesion resulting in a high migratory adaptability. Using mechanotactically driven Dictyostelium discoideum amoebae, we uncover the existence of optimal mechanosensitive conditions-corresponding to specific levels of extracellular calcium-for persistent directional migration over physicochemically different substrates. When these optimal mechanosensitive conditions are met, noticeable enhancement in cell migration directionality and speed is achieved, yet with significant differences among the different substrates. In the same narrow range of calcium concentrations that yields optimal cellular mechanosensory activity, we uncovered an absolute minimum in cell-substratum adhesion activity, for all considered substrates, with differences in adhesion strength among them amplified. The blocking of the mechanosensitive ion channels with gadolinium-i.e., the inhibition of the primary mechanosensory apparatus-hampers the active reduction in substrate adhesion, thereby leading to the same undifferentiated and drastically reduced directed migratory response. The adaptive behavioral responses of Dictyostelium cells sensitive to substrates with varying physicochemical properties suggest the possibility of novel surface analyses based on the mechanobiological ability of mechanosensitive and guidable cells to probe substrates at the nanometer-to-micrometer level.
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Affiliation(s)
- Xiaoying Zhu
- Singapore University of Technology and Design , 8 Somapah Road, Singapore 487372
| | - Roland Bouffanais
- Singapore University of Technology and Design , 8 Somapah Road, Singapore 487372
| | - Dick K P Yue
- Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
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Zhu X, Bouffanais R, Yue DKP. Persistent cellular motion control and trapping using mechanotactic signaling. PLoS One 2014; 9:e105406. [PMID: 25207940 PMCID: PMC4160188 DOI: 10.1371/journal.pone.0105406] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Accepted: 07/19/2014] [Indexed: 11/19/2022] Open
Abstract
Chemotactic signaling and the associated directed cell migration have been extensively studied owing to their importance in emergent processes of cellular aggregation. In contrast, mechanotactic signaling has been relatively overlooked despite its potential for unique ways to artificially signal cells with the aim to effectively gain control over their motile behavior. The possibility of mimicking cellular mechanotactic signals offers a fascinating novel strategy to achieve targeted cell delivery for in vitro tissue growth if proven to be effective with mammalian cells. Using (i) optimal level of extracellular calcium ([Ca2+ ]ext mM) we found, (ii) controllable fluid shear stress of low magnitude (), and (iii) the ability to swiftly reverse flow direction (within one second), we are able to successfully signal Dictyostelium discoideum amoebae and trigger migratory responses with heretofore unreported control and precision. Specifically, we are able to systematically determine the mechanical input signal required to achieve any predetermined sequences of steps including straightforward motion, reversal and trapping. The mechanotactic cellular trapping is achieved for the first time and is associated with a stalling frequency of Hz for a reversing direction mechanostimulus, above which the cells are effectively trapped while maintaining a high level of directional sensing. The value of this frequency is very close to the stalling frequency recently reported for chemotactic cell trapping [Meier B, et al. (2011) Proc Natl Acad Sci USA 108:11417–11422], suggesting that the limiting factor may be the slowness of the internal chemically-based motility apparatus.
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Affiliation(s)
- Xiaoying Zhu
- Singapore University of Technology and Design, Singapore, Singapore
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - Roland Bouffanais
- Singapore University of Technology and Design, Singapore, Singapore
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
- * E-mail:
| | - Dick K. P. Yue
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
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Zablotskii V, Syrovets T, Schmidt ZW, Dejneka A, Simmet T. Modulation of monocytic leukemia cell function and survival by high gradient magnetic fields and mathematical modeling studies. Biomaterials 2014; 35:3164-71. [PMID: 24439412 DOI: 10.1016/j.biomaterials.2013.12.098] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Accepted: 12/29/2013] [Indexed: 01/09/2023]
Abstract
The influence of spatially modulated high gradient magnetic fields on cellular functions of human THP-1 leukemia cells is studied. We demonstrate that arrays of high-gradient micrometer-sized magnets induce i) cell swelling, ii) prolonged increased ROS production, and iii) inhibit cell proliferation, and iv) elicit apoptosis of THP-1 monocytic leukemia cells in the absence of chemical or biological agents. Mathematical modeling indicates that mechanical stress exerted on the cells by high magnetic gradient forces is responsible for triggering cell swelling and formation of reactive oxygen species followed by apoptosis. We discuss physical aspects of controlling cell functions by focused magnetic gradient forces, i.e. by a noninvasive and nondestructive physical approach.
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Affiliation(s)
| | - Tatiana Syrovets
- Institute of Pharmacology of Natural Products & Clinical Pharmacology, Ulm University, Ulm 89081, Germany
| | - Zoe W Schmidt
- Institute of Pharmacology of Natural Products & Clinical Pharmacology, Ulm University, Ulm 89081, Germany
| | | | - Thomas Simmet
- Institute of Pharmacology of Natural Products & Clinical Pharmacology, Ulm University, Ulm 89081, Germany.
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