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Liu J, Prahl LS, Huang A, Hughes AJ. Measurement of adhesion and traction of cells at high yield (MATCHY) reveals an energetic ratchet driving nephron condensation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.07.579368. [PMID: 38370771 PMCID: PMC10871361 DOI: 10.1101/2024.02.07.579368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Engineering of embryonic strategies for tissue-building has extraordinary promise for regenerative medicine. This has led to a resurgence in interest in the relationship between cell biophysical properties and morphological transitions. However, mapping gene or protein expression data to cell biophysical properties to physical morphogenesis remains challenging with current techniques. Here we present MATCHY (multiplexed adhesion and traction of cells at high yield). MATCHY advances the multiplexing and throughput capabilities of existing traction force and cell-cell adhesion assays using microfabrication and an automated computation scheme with machine learning-driven cell segmentation. Both biophysical assays are coupled with serial downstream immunofluorescence to extract cell type/signaling state information. MATCHY is especially suited to complex primary tissue-, organoid-, or biopsy-derived cell mixtures since it does not rely on a priori knowledge of cell surface markers, cell sorting, or use of lineage-specific reporter animals. We first validate MATCHY on canine kidney epithelial cells engineered for RET tyrosine kinase expression and quantify a relationship between downstream signaling and cell traction. We go on to create a biophysical atlas of primary cells dissociated from the mouse embryonic kidney and use MATCHY to identify distinct biophysical states along the nephron differentiation trajectory. Our data complement expression-level knowledge of adhesion molecule changes that accompany nephron differentiation with quantitative biophysical information. These data reveal an 'energetic ratchet' that explains spatial nephron progenitor cell condensation from the niche as they differentiate, which we validate through agent-based computational simulation. MATCHY offers automated cell biophysical characterization at >104-cell throughput, a highly enabling advance for fundamental studies and new synthetic tissue design strategies for regenerative medicine.
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Affiliation(s)
- Jiageng Liu
- Department of Bioengineering, University of Pennsylvania, Philadelphia, 19104, PA, USA
- Bioengineering Graduate Group, University of Pennsylvania, Philadelphia, 19104, PA, USA
| | - Louis S. Prahl
- Department of Bioengineering, University of Pennsylvania, Philadelphia, 19104, PA, USA
| | - Aria Huang
- Department of Bioengineering, University of Pennsylvania, Philadelphia, 19104, PA, USA
- Bioengineering Graduate Group, University of Pennsylvania, Philadelphia, 19104, PA, USA
| | - Alex J. Hughes
- Department of Bioengineering, University of Pennsylvania, Philadelphia, 19104, PA, USA
- Bioengineering Graduate Group, University of Pennsylvania, Philadelphia, 19104, PA, USA
- Department of Cell and Developmental Biology, University of Pennsylvania, Philadelphia, 19104, PA, USA
- Cell and Molecular Biology Graduate Group, University of Pennsylvania, Philadelphia, 19104, PA, USA
- Center for Soft and Living Matter, University of Pennsylvania, Philadelphia, 19104, PA, USA
- Institute for Regenerative Medicine, University of Pennsylvania, Philadelphia, 19104, PA, USA
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2
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Pirnat G, Marinčič M, Ravnik M, Humar M. Quantifying local stiffness and forces in soft biological tissues using droplet optical microcavities. Proc Natl Acad Sci U S A 2024; 121:e2314884121. [PMID: 38232279 PMCID: PMC10823245 DOI: 10.1073/pnas.2314884121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 12/04/2023] [Indexed: 01/19/2024] Open
Abstract
Mechanical properties of biological tissues fundamentally underlie various biological processes and noncontact, local, and microscopic methods can provide fundamental insights. Here, we present an approach for quantifying the local mechanical properties of biological materials at the microscale, based on measuring the spectral shifts of the optical resonances in droplet microcavities. Specifically, the developed method allows for measurements of deformations in dye-doped oil droplets embedded in soft materials or biological tissues with an error of only 1 nm, which in turn enables measurements of anisotropic stress inside tissues as small as a few pN/μm2. Furthermore, by applying an external strain, Young's modulus can be measured in the range from 1 Pa to 35 kPa, which covers most human soft tissues. Using multiple droplet microcavities, our approach could enable mapping of stiffness and forces in inhomogeneous soft tissues and could also be applied to in vivo and single-cell experiments. The developed method can potentially lead to insights into the mechanics of biological tissues.
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Affiliation(s)
- Gregor Pirnat
- Condensed Matter Department, J. Stefan Institute, LjubljanaSI-1000, Slovenia
- Faculty of Mathematics and Physics, University of Ljubljana, LjubljanaSI-1000, Slovenia
| | - Matevž Marinčič
- Condensed Matter Department, J. Stefan Institute, LjubljanaSI-1000, Slovenia
- Faculty of Mathematics and Physics, University of Ljubljana, LjubljanaSI-1000, Slovenia
| | - Miha Ravnik
- Condensed Matter Department, J. Stefan Institute, LjubljanaSI-1000, Slovenia
- Faculty of Mathematics and Physics, University of Ljubljana, LjubljanaSI-1000, Slovenia
| | - Matjaž Humar
- Condensed Matter Department, J. Stefan Institute, LjubljanaSI-1000, Slovenia
- Faculty of Mathematics and Physics, University of Ljubljana, LjubljanaSI-1000, Slovenia
- Center of Excellence on Nanoscience and Nanotechnology - Nanocenter, LjubljanaSI-1000, Slovenia
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3
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Sadjadi Z, Vesperini D, Laurent AM, Barnefske L, Terriac E, Lautenschläger F, Rieger H. Ameboid cell migration through regular arrays of micropillars under confinement. Biophys J 2022; 121:4615-4623. [PMID: 36303426 PMCID: PMC9748361 DOI: 10.1016/j.bpj.2022.10.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 08/09/2022] [Accepted: 10/19/2022] [Indexed: 12/15/2022] Open
Abstract
Migrating cells often encounter a wide variety of topographic features-including the presence of obstacles-when navigating through crowded biological environments. Unraveling the impact of topography and crowding on the dynamics of cells is key to better understand many essential physiological processes such as the immune response. We study the impact of geometrical cues on ameboid migration of HL-60 cells differentiated into neutrophils. A microfluidic device is designed to track the cells in confining geometries between two parallel plates with distance h, in which identical micropillars are arranged in regular pillar forests with pillar spacing e. We observe that the cells are temporarily captured near pillars, with a mean contact time that is independent of h and e. By decreasing the vertical confinement h, we find that the cell velocity is not affected, while the persistence reduces; thus, cells are able to preserve their velocity when highly squeezed but lose the ability to control their direction of motion. At a given h, we show that by decreasing the pillar spacing e in the weak lateral confinement regime, the mean escape time of cells from effective local traps between neighboring pillars grows. This effect, together with the increase of cell-pillar contact frequency, leads to the reduction of diffusion constant D. By disentangling the contributions of these two effects on D in numerical simulations, we verify that the impact of cell-pillar contacts on cell diffusivity is more pronounced at smaller pillar spacing.
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Affiliation(s)
- Zeinab Sadjadi
- Department of Theoretical Physics, Saarland University, Saarbrücken, Germany; Centre for Biophysics, Saarland University, Saarbrücken, Germany.
| | - Doriane Vesperini
- Department of Experimental Physics, Saarland University, Saarbrücken, Germany
| | - Annalena M Laurent
- Department of Experimental Physics, Saarland University, Saarbrücken, Germany
| | - Lena Barnefske
- Leibniz-Institute for New Materials, Saarbrücken, Germany
| | - Emmanuel Terriac
- Department of Experimental Physics, Saarland University, Saarbrücken, Germany
| | - Franziska Lautenschläger
- Centre for Biophysics, Saarland University, Saarbrücken, Germany; Department of Experimental Physics, Saarland University, Saarbrücken, Germany
| | - Heiko Rieger
- Department of Theoretical Physics, Saarland University, Saarbrücken, Germany; Centre for Biophysics, Saarland University, Saarbrücken, Germany; Leibniz-Institute for New Materials, Saarbrücken, Germany
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4
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A roadmap for translational cancer glycoimmunology at single cell resolution. J Exp Clin Cancer Res 2022; 41:143. [PMID: 35428302 PMCID: PMC9013178 DOI: 10.1186/s13046-022-02335-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 03/17/2022] [Indexed: 11/11/2022] Open
Abstract
Cancer cells can evade immune responses by exploiting inhibitory immune checkpoints. Immune checkpoint inhibitor (ICI) therapies based on anti-CTLA-4 and anti-PD-1/PD-L1 antibodies have been extensively explored over the recent years to unleash otherwise compromised anti-cancer immune responses. However, it is also well established that immune suppression is a multifactorial process involving an intricate crosstalk between cancer cells and the immune systems. The cancer glycome is emerging as a relevant source of immune checkpoints governing immunosuppressive behaviour in immune cells, paving an avenue for novel immunotherapeutic options. This review addresses the current state-of-the-art concerning the role played by glycans controlling innate and adaptive immune responses, while shedding light on available experimental models for glycoimmunology. We also emphasize the tremendous progress observed in the development of humanized models for immunology, the paramount contribution of advances in high-throughput single-cell analysis in this context, and the importance of including predictive machine learning algorithms in translational research. This may constitute an important roadmap for glycoimmunology, supporting careful adoption of models foreseeing clinical translation of fundamental glycobiology knowledge towards next generation immunotherapies.
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Aoun L, Nègre P, Gonsales C, Seveau de Noray V, Brustlein S, Biarnes-Pelicot M, Valignat MP, Theodoly O. Leukocyte transmigration and longitudinal forward-thrusting force in a microfluidic Transwell device. Biophys J 2021; 120:2205-2221. [PMID: 33838136 DOI: 10.1016/j.bpj.2021.03.037] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 03/10/2021] [Accepted: 03/24/2021] [Indexed: 01/21/2023] Open
Abstract
Transmigration of leukocytes across blood vessels walls is a critical step of the immune response. Transwell assays examine transmigration properties in vitro by counting cells passages through a membrane; however, the difficulty of in situ imaging hampers a clear disentanglement of the roles of adhesion, chemokinesis, and chemotaxis. We used here microfluidic Transwells to image the cells' transition from 2D migration on a surface to 3D migration in a confining microchannel and measure cells longitudinal forward-thrusting force in microchannels. Primary human effector T lymphocytes adhering with integrins LFA-1 (αLβ2) had a marked propensity to transmigrate in Transwells without chemotactic cue. Both adhesion and contractility were important to overcome the critical step of nucleus penetration but were remarkably dispensable for 3D migration in smooth microchannels deprived of topographic features. Transmigration in smooth channels was qualitatively consistent with a propulsion by treadmilling of cell envelope and squeezing of cell trailing edge. Stalling conditions of 3D migration were then assessed by imposing pressure drops across microchannels. Without specific adhesion, the cells slid backward with subnanonewton forces, showing that 3D migration under stress is strongly limited by a lack of adhesion and friction with channels. With specific LFA-1 mediated adhesion, stalling occurred at around 3 and 6 nN in 2 × 4 and 4 × 4 μm2 channels, respectively, supporting that stalling of adherent cells was under pressure control rather than force control. The stall pressure of 4 mbar is consistent with the pressure of actin filament polymerization that mediates lamellipod growth. The arrest of adherent cells under stress therefore seems controlled by the compression of the cell leading edge, which perturbs cells front-rear polarization and triggers adhesion failure or polarization reversal. Although stalling assays in microfluidic Transwells do not mimic in vivo transmigration, they provide a powerful tool to scrutinize 2D and 3D migration, barotaxis, and chemotaxis.
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Affiliation(s)
- Laurene Aoun
- LAI, Aix-Marseille Univ, CNRS, INSERM, Turing Centre for Living Systems, Marseille, France
| | - Paulin Nègre
- LAI, Aix-Marseille Univ, CNRS, INSERM, Turing Centre for Living Systems, Marseille, France
| | - Cristina Gonsales
- LAI, Aix-Marseille Univ, CNRS, INSERM, Turing Centre for Living Systems, Marseille, France
| | | | - Sophie Brustlein
- LAI, Aix-Marseille Univ, CNRS, INSERM, Turing Centre for Living Systems, Marseille, France
| | | | - Marie-Pierre Valignat
- LAI, Aix-Marseille Univ, CNRS, INSERM, Turing Centre for Living Systems, Marseille, France
| | - Olivier Theodoly
- LAI, Aix-Marseille Univ, CNRS, INSERM, Turing Centre for Living Systems, Marseille, France.
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6
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Mattei F, Andreone S, Mencattini A, De Ninno A, Businaro L, Martinelli E, Schiavoni G. Oncoimmunology Meets Organs-on-Chip. Front Mol Biosci 2021; 8:627454. [PMID: 33842539 PMCID: PMC8032996 DOI: 10.3389/fmolb.2021.627454] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 03/04/2021] [Indexed: 01/04/2023] Open
Abstract
Oncoimmunology represents a biomedical research discipline coined to study the roles of immune system in cancer progression with the aim of discovering novel strategies to arm it against the malignancy. Infiltration of immune cells within the tumor microenvironment is an early event that results in the establishment of a dynamic cross-talk. Here, immune cells sense antigenic cues to mount a specific anti-tumor response while cancer cells emanate inhibitory signals to dampen it. Animals models have led to giant steps in this research context, and several tools to investigate the effect of immune infiltration in the tumor microenvironment are currently available. However, the use of animals represents a challenge due to ethical issues and long duration of experiments. Organs-on-chip are innovative tools not only to study how cells derived from different organs interact with each other, but also to investigate on the crosstalk between immune cells and different types of cancer cells. In this review, we describe the state-of-the-art of microfluidics and the impact of OOC in the field of oncoimmunology underlining the importance of this system in the advancements on the complexity of tumor microenvironment.
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Affiliation(s)
- Fabrizio Mattei
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Sara Andreone
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Arianna Mencattini
- Department of Electronic Engineering, University of Rome Tor Vergata, Rome, Italy.,Interdisciplinary Center for Advanced Studies on Lab-on-Chip and Organ-on-Chip Applications (ICLOC), University of Rome Tor Vergata, Rome, Italy
| | - Adele De Ninno
- Institute for Photonics and Nanotechnologies, Italian National Research Council, Rome, Italy
| | - Luca Businaro
- Institute for Photonics and Nanotechnologies, Italian National Research Council, Rome, Italy
| | - Eugenio Martinelli
- Department of Electronic Engineering, University of Rome Tor Vergata, Rome, Italy.,Interdisciplinary Center for Advanced Studies on Lab-on-Chip and Organ-on-Chip Applications (ICLOC), University of Rome Tor Vergata, Rome, Italy
| | - Giovanna Schiavoni
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
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7
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Golovkova I, Montel L, Wandersman E, Bertrand T, Prevost AM, Pontani LL. Depletion attraction impairs the plasticity of emulsions flowing in a constriction. SOFT MATTER 2020; 16:3294-3302. [PMID: 32173724 DOI: 10.1039/c9sm02343g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We study the elasto-plastic behavior of dense attractive emulsions under a mechanical perturbation. The attraction is introduced through non-specific depletion interactions between the droplets and is controlled by changing the concentration of surfactant micelles in the continuous phase. We find that such attractive forces are not sufficient to induce any measurable modification on the scalings between the local packing fraction and the deformation of the droplets. However, when the emulsions are flowed through 2D microfluidic constrictions, we uncover a measurable effect of attraction on their elasto-plastic response. Indeed, we measure higher levels of deformation inside the constriction for attractive droplets. In addition, we show that these measurements correlate with droplet rearrangements that are spatially delayed in the constriction for higher attraction forces.
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Affiliation(s)
- Iaroslava Golovkova
- Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Laboratoire Jean Perrin (LJP), F-75005, Paris, France.
| | - Lorraine Montel
- Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Laboratoire Jean Perrin (LJP), F-75005, Paris, France.
| | - Elie Wandersman
- Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Laboratoire Jean Perrin (LJP), F-75005, Paris, France.
| | - Thibault Bertrand
- Department of Mathematics, Imperial College London, South Kensington Campus, London SW7 2AZ, UK.
| | - Alexis Michel Prevost
- Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Laboratoire Jean Perrin (LJP), F-75005, Paris, France.
| | - Lea-Laetitia Pontani
- Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Laboratoire Jean Perrin (LJP), F-75005, Paris, France.
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8
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Mularski A, Niedergang F. Force Measurement of Living Professional Phagocytes of the Immune System. Aust J Chem 2020. [DOI: 10.1071/ch19409] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
In higher organisms, the professional phagocytes of the immune system (dendritic cells, neutrophils, monocytes, and macrophages) are responsible for pathogen clearance, the development of immune responses via cytokine secretion and presentation of antigens derived from internalized material, and the normal turnover and remodelling of tissues and disposal of dead cells. These functions rely on the ability of phagocytes to migrate and adhere to sites of infection, dynamically probe their environments to make contact with phagocytic targets, and perform phagocytosis, a mechanism of internalization of large particles, microorganisms, and cellular debris for intracellular degradation. The cell-generated forces that are necessary for the professional phagocytes to act in their roles as ‘first responders’ of the immune system have been the subject of mechanical studies in recent years. Methods of force measurement such as atomic force microscopy, traction force microscopy, micropipette aspiration, magnetic and optical tweezers, and exciting new variants of these have accompanied classical biological methods to perform mechanical investigations of these highly dynamic immune cells.
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Pinon L, Montel L, Mesdjian O, Bernard M, Michel A, Ménager C, Fattaccioli J. Kinetically Enhanced Fabrication of Homogeneous Biomimetic and Functional Emulsion Droplets. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:15319-15326. [PMID: 30507132 DOI: 10.1021/acs.langmuir.8b02721] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Characterized by a fluid and deformable interface, ligand-functionalized emulsion droplets are used as model probes to address biophysical, biological, and developmental questions. Functionalization protocols usually rely on the use of headgroup-modified phospholipids that are dissolved in the oil phase prior to emulsification, leading to a broad range of surface densities within a given droplet population. With the aim to coat particles homogeneously with biologically relevant lipids and proteins (streptavidin, immunoglobulins, etc.), we developed a reliable surface decoration protocol based on the use of polar cosolvents to dissolve the lipids in the aqueous phase after the droplet production. We show that the surface density of the lipids at the interface has a narrow normal distribution for droplets having the same size. We performed titration isotherms for lipids and biologically relevant proteins on these drops. Then, we studied the influence of the presence of surfactants in the medium on lipid insertion and compared the results for a range of polar cosolvents of increasing polarity. To assess both the generality and the biocompatibility of the method, we show that we can produce more sophisticated, monodisperse functional magnetic emulsions with a very high surface homogeneity. Using an oil denser than the surrounding culture medium, we show that IgG-coated droplets can be used as probes for phagocytosis experiments.
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Affiliation(s)
- L Pinon
- PASTEUR, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS , 75005 Paris , France
- Institut Curie, PSL University, INSERM U932 , 26 rue d'Ulm , 75248 Paris Cedex 05 , France
| | - L Montel
- PASTEUR, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS , 75005 Paris , France
| | - O Mesdjian
- PASTEUR, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS , 75005 Paris , France
| | - M Bernard
- PASTEUR, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS , 75005 Paris , France
- UMR 144, Institut Curie , 12 rue Lhomond , 75005 Paris , France
| | - A Michel
- Sorbonne Université, CNRS, Laboratoire Physicochimie des Électrolytes et Nanosystèmes Interfaciaux PHENIX , 4 place Jussieu , F-75005 Paris , France
| | - C Ménager
- Sorbonne Université, CNRS, Laboratoire Physicochimie des Électrolytes et Nanosystèmes Interfaciaux PHENIX , 4 place Jussieu , F-75005 Paris , France
| | - J Fattaccioli
- PASTEUR, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS , 75005 Paris , France
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Desvignes E, Bouissou A, Laborde A, Mangeat T, Proag A, Vieu C, Thibault C, Maridonneau-Parini I, Poincloux R. Nanoscale Forces during Confined Cell Migration. NANO LETTERS 2018; 18:6326-6333. [PMID: 30232897 DOI: 10.1021/acs.nanolett.8b02611] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In vivo, immune cells migrate through a wide variety of tissues, including confined and constricting environments. Deciphering how cells apply forces when infiltrating narrow areas is a critical issue that requires innovative experimental procedures. To reveal the distribution and dynamics of the forces of cells migrating in confined environments, we designed a device combining microchannels of controlled dimensions with integrated deformable micropillars serving as sensors of nanoscale subcellular forces. First, a specific process composed of two steps of photolithography and dry etching was tuned to obtain micrometric pillars of controlled stiffness and dimensions inside microchannels. Second, an image-analysis workflow was developed to automatically evaluate the amplitude and direction of the forces applied on the micropillars by migrating cells. Using this workflow, we show that this microdevice is a sensor of forces with a limit of detection down to 64 pN. Third, by recording pillar movements during the migration of macrophages inside the confining microchannels, we reveal that macrophages bent the pillars with typical forces of 0.3 nN and applied higher forces at the cell edges than around their nuclei. When the degree of confinement was increased, we found that forces were redirected from inward to outward. By providing a microdevice that allows the analysis of force direction and force magnitude developed by confined cells, our work paves the way for investigating the mechanical behavior of cells migrating though 3D constricted environments.
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Affiliation(s)
- Emma Desvignes
- LAAS-CNRS , Université de Toulouse, CNRS, INSA , Toulouse 31031 , France
| | - Anaïs Bouissou
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS , Toulouse 31077 , France
| | - Adrian Laborde
- LAAS-CNRS , Université de Toulouse, CNRS, INSA , Toulouse 31031 , France
| | - Thomas Mangeat
- LBCMCP, Centre de Biologie Intégrative , Université de Toulouse, CNRS, UPS , Toulouse 31062 , France
| | - Amsha Proag
- LBCMCP, Centre de Biologie Intégrative , Université de Toulouse, CNRS, UPS , Toulouse 31062 , France
| | - Christophe Vieu
- LAAS-CNRS , Université de Toulouse, CNRS, INSA , Toulouse 31031 , France
| | | | - Isabelle Maridonneau-Parini
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS , Toulouse 31077 , France
| | - Renaud Poincloux
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS , Toulouse 31077 , France
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11
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Ma D, Wang R, Chen S, Luo T, Chow YT, Sun D. Microfluidic platform for probing cancer cells migration property under periodic mechanical confinement. BIOMICROFLUIDICS 2018; 12:024118. [PMID: 29755635 PMCID: PMC5924377 DOI: 10.1063/1.5030135] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 04/17/2018] [Indexed: 05/04/2023]
Abstract
Cancer cell migration and invasion, which are involved in tumour metastasis, are hard to predict and control. Numerous studies have demonstrated that physical cues influence cancer cell migration and affect tumour metastasis. In this study, we proposed the use of a microchannel chip equipped with a number of vertical constrictions to produce periodic compression forces on cells passing through narrow channels. The chip with repeated vertical confinement was applied on adherent MHCC-97L liver cancer cells and suspended OCI-AML leukaemia cells to determine the migration ability of these cancer cells. Given the stimulation of the periodic mechanical confinement on-chip, the migration ability of cancer cells was promoted. Moreover, the migration speed increased as the stimulation was enhanced. Both AFM nanoindentation and optical stretching tests on cancer cells were performed to measure their mechanical property. After confinement stimulation, the cancer cells possessed higher deformability and lower stiffness than non-stimulating cells. The confinement stimulation altered the cell cytoskeleton, which governs the migration speed. This phenomenon was determined through gene expression analysis. The proposed on-chip cell migration assays will help characterise the migration property of cancer cells and benefit the development of new therapeutic strategies for metastasis.
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Affiliation(s)
- Dongce Ma
- Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Kowloon Tong, Hong Kong
| | - Ran Wang
- Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Kowloon Tong, Hong Kong
| | - Shuxun Chen
- Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Kowloon Tong, Hong Kong
| | - Tao Luo
- Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Kowloon Tong, Hong Kong
| | - Yu-Ting Chow
- Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Kowloon Tong, Hong Kong
| | - Dong Sun
- Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Kowloon Tong, Hong Kong
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12
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Honaker L, Lagerwall JPF, Jampani VSR. Microfluidic Tensiometry Technique for the Characterization of the Interfacial Tension between Immiscible Liquids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:2403-2409. [PMID: 29364689 PMCID: PMC5940325 DOI: 10.1021/acs.langmuir.7b03494] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2017] [Revised: 12/10/2017] [Indexed: 06/01/2023]
Abstract
The interfacial tension between two immiscible fluids is of critical importance for understanding many natural phenomena as well as in industrial production processes; however, it can be challenging to measure this parameter with high accuracy. Most commonly used techniques have significant shortcomings because of their reliance on other data such as density or viscosity. To overcome these issues, we devise a technique that works with very small sample quantities and does not require any data about either fluid, based on micropipette aspiration techniques. The method facilitates the generation of a droplet of one fluid inside of the other, followed by immediate in situ aspiration of the droplet into a constricted channel. A modified Young-Laplace equation is then used to relate the pressure needed to produce a given deformation of the droplet's radius to the interfacial tension. We demonstrate this technique on different systems with interfacial tensions ranging from sub-millinewton per meter to several hundred millinewton per meter, thus over 4 orders of magnitude, obtaining precise results in agreement with the literature solely from experimental observations of the droplet deformation.
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Affiliation(s)
- Lawrence
W. Honaker
- Experimental Soft Matter Physics Group, University of Luxembourg, L-1511 Luxembourg, Grand Duchy of Luxembourg
| | - Jan P. F. Lagerwall
- Experimental Soft Matter Physics Group, University of Luxembourg, L-1511 Luxembourg, Grand Duchy of Luxembourg
| | - V. S. R. Jampani
- Experimental Soft Matter Physics Group, University of Luxembourg, L-1511 Luxembourg, Grand Duchy of Luxembourg
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Nerger BA, Siedlik MJ, Nelson CM. Microfabricated tissues for investigating traction forces involved in cell migration and tissue morphogenesis. Cell Mol Life Sci 2017; 74:1819-1834. [PMID: 28008471 PMCID: PMC5391279 DOI: 10.1007/s00018-016-2439-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 12/02/2016] [Accepted: 12/08/2016] [Indexed: 01/09/2023]
Abstract
Cell-generated forces drive an array of biological processes ranging from wound healing to tumor metastasis. Whereas experimental techniques such as traction force microscopy are capable of quantifying traction forces in multidimensional systems, the physical mechanisms by which these forces induce changes in tissue form remain to be elucidated. Understanding these mechanisms will ultimately require techniques that are capable of quantifying traction forces with high precision and accuracy in vivo or in systems that recapitulate in vivo conditions, such as microfabricated tissues and engineered substrata. To that end, here we review the fundamentals of traction forces, their quantification, and the use of microfabricated tissues designed to study these forces during cell migration and tissue morphogenesis. We emphasize the differences between traction forces in two- and three-dimensional systems, and highlight recently developed techniques for quantifying traction forces.
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Affiliation(s)
- Bryan A Nerger
- Department of Chemical and Biological Engineering, Princeton University, 303 Hoyt Laboratory, William Street, Princeton, NJ, 08544, USA
| | - Michael J Siedlik
- Department of Chemical and Biological Engineering, Princeton University, 303 Hoyt Laboratory, William Street, Princeton, NJ, 08544, USA
| | - Celeste M Nelson
- Department of Chemical and Biological Engineering, Princeton University, 303 Hoyt Laboratory, William Street, Princeton, NJ, 08544, USA.
- Department of Molecular Biology, Princeton University, 303 Hoyt Laboratory, William Street, Princeton, NJ, 08544, USA.
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