1
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Comelles J, Fernández-Majada V, Acevedo V, Rebollo-Calderon B, Martínez E. Soft topographical patterns trigger a stiffness-dependent cellular response to contact guidance. Mater Today Bio 2023; 19:100593. [PMID: 36923364 PMCID: PMC10009736 DOI: 10.1016/j.mtbio.2023.100593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 02/20/2023] [Accepted: 02/22/2023] [Indexed: 03/02/2023] Open
Abstract
Topographical patterns are a powerful tool to study directional migration. Grooved substrates have been extensively used as in vitro models of aligned extracellular matrix fibers because they induce cell elongation, alignment, and migration through a phenomenon known as contact guidance. This process, which involves the orientation of focal adhesions, F-actin, and microtubule cytoskeleton along the direction of the grooves, has been primarily studied on hard materials of non-physiological stiffness. But how it unfolds when the stiffness of the grooves varies within the physiological range is less known. Here we show that substrate stiffness modulates the cellular response to topographical contact guidance. We find that for fibroblasts, while focal adhesions and actin respond to topography independently of the stiffness, microtubules show a stiffness-dependent response that regulates contact guidance. On the other hand, both clusters and single breast carcinoma epithelial cells display stiffness-dependent contact guidance, leading to more directional and efficient migration when increasing substrate stiffness. These results suggest that both matrix stiffening and alignment of extracellular matrix fibers cooperate during directional cell migration, and that the outcome differs between cell types depending on how they organize their cytoskeletons.
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Affiliation(s)
- Jordi Comelles
- Biomimetic Systems for Cell Engineering Laboratory, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 15-21, 08028, Barcelona, Spain.,Department of Electronics and Biomedical Engineering, University of Barcelona (UB), Martí I Franquès 1, 08028, Barcelona, Spain
| | - Vanesa Fernández-Majada
- Biomimetic Systems for Cell Engineering Laboratory, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 15-21, 08028, Barcelona, Spain.,Department of Pathology and Experimental Therapeutics, University of Barcelona (UB), Feixa Llarga, 08907, L'Hospitalet de Llobregat, Spain
| | - Verónica Acevedo
- Biomimetic Systems for Cell Engineering Laboratory, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 15-21, 08028, Barcelona, Spain
| | - Beatriz Rebollo-Calderon
- Biomimetic Systems for Cell Engineering Laboratory, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 15-21, 08028, Barcelona, Spain
| | - Elena Martínez
- Biomimetic Systems for Cell Engineering Laboratory, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 15-21, 08028, Barcelona, Spain.,Centro de Investigación Biomédica en Red (CIBER), Av. Monforte de Lemos 3-5, Pabellón 11, Planta 0, 28029, Madrid, Spain.,Department of Electronics and Biomedical Engineering, University of Barcelona (UB), Martí I Franquès 1, 08028, Barcelona, Spain
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2
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Godeau AL, Leoni M, Comelles J, Guyomar T, Lieb M, Delanoë-Ayari H, Ott A, Harlepp S, Sens P, Riveline D. 3D single cell migration driven by temporal correlation between oscillating force dipoles. eLife 2022; 11:71032. [PMID: 35899947 PMCID: PMC9395190 DOI: 10.7554/elife.71032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Accepted: 07/28/2022] [Indexed: 11/13/2022] Open
Abstract
Directional cell locomotion requires symmetry breaking between the front and rear of the cell. In some cells, symmetry breaking manifests itself in a directional flow of actin from the front to the rear of the cell. Many cells, especially in physiological 3D matrices do not show such coherent actin dynamics and present seemingly competing protrusion/retraction dynamics at their front and back. How symmetry breaking manifests itself for such cells is therefore elusive. We take inspiration from the scallop theorem proposed by Purcell for micro-swimmers in Newtonian fluids: self-propelled objects undergoing persistent motion at low Reynolds number must follow a cycle of shape changes that breaks temporal symmetry. We report similar observations for cells crawling in 3D. We quantified cell motion using a combination of 3D live cell imaging, visualization of the matrix displacement and a minimal model with multipolar expansion. We show that our cells embedded in a 3D matrix form myosin-driven force dipoles at both sides of the nucleus, that locally and periodically pinch the matrix. The existence of a phase shift between the two dipoles is required for directed cell motion which manifests itself as cycles with finite area in the dipole-quadrupole diagram, a formal equivalence to the Purcell cycle. We confirm this mechanism by triggering local dipolar contractions with a laser. This leads to directed motion. Our study reveals that these cells control their motility by synchronizing dipolar forces distributed at front and back. This result opens new strategies to externally control cell motion as well as for the design of micro-crawlers.
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Affiliation(s)
- Amélie Luise Godeau
- Laboratory of Cell Physics, University of Strasbourg, CNRS, IGBMC, Illkirch, France
| | | | - Jordi Comelles
- Laboratory of Cell Physics, University of Strasbourg, CNRS, IGBMC, Illkirch, France
| | - Tristan Guyomar
- Laboratory of Cell Physics, University of Strasbourg, CNRS, IGBMC, Illkirch, France
| | - Michele Lieb
- Laboratory of Cell Physics, University of Strasbourg, CNRS, IGBMC, Illkirch, France
| | - Hélène Delanoë-Ayari
- Univ. Lyon, Université Claude Bernard Lyon 1, CNRS UMR 5306, LyonVilleurbanne Cedex, France
| | - Albrecht Ott
- Universität des Saarlandes, Saarbrücken, Germany
| | - Sebastien Harlepp
- INSERM UMR S1109, Institut d'Hématologie et d'Immunologie, Strasbourg, France
| | - Pierre Sens
- Laboratoire Physico Chimie Curie, Institut Curie, CNRS UMR168, Paris, France
| | - Daniel Riveline
- Development and stem cells, University of Strasbourg, CNRS, IGBMC, Illkirch, France
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3
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Clua‐Ferré L, De Chiara F, Rodríguez‐Comas J, Comelles J, Martinez E, Godeau AL, García‐Alamán A, Gasa R, Ramón‐Azcón J. Collagen-Tannic Acid Spheroids for β-Cell Encapsulation Fabricated Using a 3D Bioprinter. Adv Mater Technol 2022; 7:2101696. [PMID: 37182094 PMCID: PMC10170414 DOI: 10.1002/admt.202101696] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/18/2022] [Indexed: 05/16/2023]
Abstract
Type 1 Diabetes results from autoimmune response elicited against β-cell antigens. Nowadays, insulin injections remain the leading therapeutic option. However, injection treatment fails to emulate the highly dynamic insulin release that β-cells provide. 3D cell-laden microspheres have been proposed during the last years as a major platform for bioengineering insulin-secreting constructs for tissue graft implantation and a model for in vitro drug screening platforms. Current microsphere fabrication technologies have several drawbacks: the need for an oil phase containing surfactants, diameter inconsistency of the microspheres, and high time-consuming processes. These technologies have widely used alginate for its rapid gelation, high processability, and low cost. However, its low biocompatible properties do not provide effective cell attachment. This study proposes a high-throughput methodology using a 3D bioprinter that employs an ECM-like microenvironment for effective cell-laden microsphere production to overcome these limitations. Crosslinking the resulting microspheres with tannic acid prevents collagenase degradation and enhances spherical structural consistency while allowing the diffusion of nutrients and oxygen. The approach allows customization of microsphere diameter with extremely low variability. In conclusion, a novel bio-printing procedure is developed to fabricate large amounts of reproducible microspheres capable of secreting insulin in response to extracellular glucose stimuli.
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Affiliation(s)
- Laura Clua‐Ferré
- Institute for Bioengineering of Catalonia (IBEC)The Barcelona Institute of Science and Technology (BIST)Baldiri I Reixac, 10–12Barcelona08028Spain
| | - Francesco De Chiara
- Institute for Bioengineering of Catalonia (IBEC)The Barcelona Institute of Science and Technology (BIST)Baldiri I Reixac, 10–12Barcelona08028Spain
| | - Júlia Rodríguez‐Comas
- Institute for Bioengineering of Catalonia (IBEC)The Barcelona Institute of Science and Technology (BIST)Baldiri I Reixac, 10–12Barcelona08028Spain
| | - Jordi Comelles
- Institute for Bioengineering of Catalonia (IBEC)The Barcelona Institute of Science and Technology (BIST)Baldiri I Reixac, 10–12Barcelona08028Spain
- Department of Electronics and Biomedical EngineeringUniversity of Barcelona (UB)c/Martí i Franquès 1–11BarcelonaE08028Spain
| | - Elena Martinez
- Institute for Bioengineering of Catalonia (IBEC)The Barcelona Institute of Science and Technology (BIST)Baldiri I Reixac, 10–12Barcelona08028Spain
- Department of Electronics and Biomedical EngineeringUniversity of Barcelona (UB)c/Martí i Franquès 1–11BarcelonaE08028Spain
- Centro de Investigación Biomédica en Red (CIBER)Av. Monforte de Lemos 3–5, Pabellón 11, Planta 0MadridE28029Spain
| | - Amelie Luise Godeau
- Institute for Bioengineering of Catalonia (IBEC)The Barcelona Institute of Science and Technology (BIST)Baldiri I Reixac, 10–12Barcelona08028Spain
| | - Ainhoa García‐Alamán
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM)Madrid28029Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS)Barcelona08036Spain
| | - Rosa Gasa
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM)Madrid28029Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS)Barcelona08036Spain
| | - Javier Ramón‐Azcón
- Institute for Bioengineering of Catalonia (IBEC)The Barcelona Institute of Science and Technology (BIST)Baldiri I Reixac, 10–12Barcelona08028Spain
- Institució Catalana de Reserca I Estudis Avançats (ICREA)Passeig de Lluís Companys, 23BarcelonaE08010Spain
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4
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Fernández-Garibay X, Ortega MA, Cerro-Herreros E, Comelles J, Martínez E, Artero R, Fernández-Costa JM, Ramón-Azcón J. Bioengineered in vitro3D model of myotonic dystrophy type 1 human skeletal muscle. Biofabrication 2021; 13. [PMID: 33836519 DOI: 10.1088/1758-5090/abf6ae] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 04/09/2021] [Indexed: 02/06/2023]
Abstract
Myotonic dystrophy type 1 (DM1) is the most common hereditary myopathy in the adult population. The disease is characterized by progressive skeletal muscle degeneration that produces severe disability. At present, there is still no effective treatment for DM1 patients, but the breakthroughs in understanding the molecular pathogenic mechanisms in DM1 have allowed the testing of new therapeutic strategies. Animal models andin vitrotwo-dimensional cell cultures have been essential for these advances. However, serious concerns exist regarding how faithfully these models reproduce the biological complexity of the disease. Biofabrication tools can be applied to engineer human three-dimensional (3D) culture systems that complement current preclinical research models. Here, we describe the development of the firstin vitro3D model of DM1 human skeletal muscle. Transdifferentiated myoblasts from patient-derived fibroblasts were encapsulated in micromolded gelatin methacryloyl-carboxymethyl cellulose methacrylate hydrogels through photomold patterning on functionalized glass coverslips. These hydrogels present a microstructured topography that promotes myoblasts alignment and differentiation resulting in highly aligned myotubes from both healthy and DM1 cells in a long-lasting cell culture. The DM1 3D microtissues recapitulate the molecular alterations detected in patient biopsies. Importantly, fusion index analyses demonstrate that 3D micropatterning significantly improved DM1 cell differentiation into multinucleated myotubes compared to standard cell cultures. Moreover, the characterization of the 3D cultures of DM1 myotubes detects phenotypes as the reduced thickness of myotubes that can be used for drug testing. Finally, we evaluated the therapeutic effect of antagomiR-23b administration on bioengineered DM1 skeletal muscle microtissues. AntagomiR-23b treatment rescues both molecular DM1 hallmarks and structural phenotype, restoring myotube diameter to healthy control sizes. Overall, these new microtissues represent an improvement over conventional cell culture models and can be used as biomimetic platforms to establish preclinical studies for myotonic dystrophy.
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Affiliation(s)
- Xiomara Fernández-Garibay
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), c/Baldiri Reixac 10-12, E08028 Barcelona, Spain
| | - María A Ortega
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), c/Baldiri Reixac 10-12, E08028 Barcelona, Spain
| | - Estefanía Cerro-Herreros
- University Institute for Biotechnology and Biomedicine (BIOTECMED), University of Valencia, Dr Moliner 50, E46100 Burjassot, Valencia, Spain.,Translational Genomics Group, Incliva Health Research Institute, Dr Moliner 50, E46100 Burjassot, Valencia, Spain.,Joint Unit Incliva- CIPF, Dr Moliner 50, E46100 Burjassot, Valencia, Spain
| | - Jordi Comelles
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), c/Baldiri Reixac 10-12, E08028 Barcelona, Spain.,Department of Electronics and Biomedical Engineering, University of Barcelona (UB), c/Martí i Franquès 1-11, E08028 Barcelona, Spain
| | - Elena Martínez
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), c/Baldiri Reixac 10-12, E08028 Barcelona, Spain.,Department of Electronics and Biomedical Engineering, University of Barcelona (UB), c/Martí i Franquès 1-11, E08028 Barcelona, Spain.,Centro de Investigación Biomédica en Red (CIBER), Av. Monforte de Lemos 3-5, Pabellón 11, Planta 0, E28029 Madrid, Spain
| | - Rubén Artero
- University Institute for Biotechnology and Biomedicine (BIOTECMED), University of Valencia, Dr Moliner 50, E46100 Burjassot, Valencia, Spain.,Translational Genomics Group, Incliva Health Research Institute, Dr Moliner 50, E46100 Burjassot, Valencia, Spain.,Joint Unit Incliva- CIPF, Dr Moliner 50, E46100 Burjassot, Valencia, Spain
| | - Juan M Fernández-Costa
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), c/Baldiri Reixac 10-12, E08028 Barcelona, Spain
| | - Javier Ramón-Azcón
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), c/Baldiri Reixac 10-12, E08028 Barcelona, Spain.,Institució Catalana de Reserca I Estudis Avançats (ICREA), Passeig de Lluís Companys, 23, E08010 Barcelona, Spain
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5
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Comelles J, SS S, Lu L, Le Maout E, Anvitha S, Salbreux G, Jülicher F, Inamdar MM, Riveline D. Epithelial colonies in vitro elongate through collective effects. eLife 2021; 10:e57730. [PMID: 33393459 PMCID: PMC7850623 DOI: 10.7554/elife.57730] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 12/31/2020] [Indexed: 12/11/2022] Open
Abstract
Epithelial tissues of the developing embryos elongate by different mechanisms, such as neighbor exchange, cell elongation, and oriented cell division. Since autonomous tissue self-organization is influenced by external cues such as morphogen gradients or neighboring tissues, it is difficult to distinguish intrinsic from directed tissue behavior. The mesoscopic processes leading to the different mechanisms remain elusive. Here, we study the spontaneous elongation behavior of spreading circular epithelial colonies in vitro. By quantifying deformation kinematics at multiple scales, we report that global elongation happens primarily due to cell elongations, and its direction correlates with the anisotropy of the average cell elongation. By imposing an external time-periodic stretch, the axis of this global symmetry breaking can be modified and elongation occurs primarily due to orientated neighbor exchange. These different behaviors are confirmed using a vertex model for collective cell behavior, providing a framework for understanding autonomous tissue elongation and its origins.
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Affiliation(s)
- Jordi Comelles
- Laboratory of Cell Physics ISIS/IGBMC, CNRS and Université de StrasbourgStrasbourgFrance
- Institut de Génétique et de Biologie Moléculaire et CellulaireIllkirchFrance
- Centre National de la Recherche Scientifique, UMR7104IllkirchFrance
- Institut National de la Santé et de la Recherche Médicale, U964IllkirchFrance
| | - Soumya SS
- Department of Civil Engineering, Indian Institute of Technology Bombay, PowaiMumbaiIndia
| | - Linjie Lu
- Laboratory of Cell Physics ISIS/IGBMC, CNRS and Université de StrasbourgStrasbourgFrance
- Institut de Génétique et de Biologie Moléculaire et CellulaireIllkirchFrance
- Centre National de la Recherche Scientifique, UMR7104IllkirchFrance
- Institut National de la Santé et de la Recherche Médicale, U964IllkirchFrance
| | - Emilie Le Maout
- Laboratory of Cell Physics ISIS/IGBMC, CNRS and Université de StrasbourgStrasbourgFrance
- Institut de Génétique et de Biologie Moléculaire et CellulaireIllkirchFrance
- Centre National de la Recherche Scientifique, UMR7104IllkirchFrance
- Institut National de la Santé et de la Recherche Médicale, U964IllkirchFrance
| | - S Anvitha
- Department of Mechanical Engineering, Indian Institute of Technology Bombay, PowaiMumbaiIndia
| | | | - Frank Jülicher
- Max Planck Institute for the Physics of Complex SystemsDresdenGermany
- Cluster of Excellence Physics of LifeDresdenGermany
| | - Mandar M Inamdar
- Department of Civil Engineering, Indian Institute of Technology Bombay, PowaiMumbaiIndia
| | - Daniel Riveline
- Laboratory of Cell Physics ISIS/IGBMC, CNRS and Université de StrasbourgStrasbourgFrance
- Institut de Génétique et de Biologie Moléculaire et CellulaireIllkirchFrance
- Centre National de la Recherche Scientifique, UMR7104IllkirchFrance
- Institut National de la Santé et de la Recherche Médicale, U964IllkirchFrance
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6
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Le Goff X, Comelles J, Kervrann C, Riveline D. Ends and middle: Global force balance and septum location in fission yeast. Eur Phys J E Soft Matter 2020; 43:31. [PMID: 32474823 DOI: 10.1140/epje/i2020-11955-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 05/07/2020] [Indexed: 06/11/2023]
Abstract
The fission yeast cell is shaped as a very regular cylinder ending by hemi-spheres at both cell ends. Its conserved phenotypes are often used as read-outs for classifying interacting genes and protein networks. Using Pascal and Young-Laplace laws, we proposed a framework where scaling arguments predicted shapes. Here we probed quantitatively one of these relations which predicts that the division site would be located closer to the cell end with the larger radius of curvature. By combining genetics and quantitative imaging, we tested experimentally whether altered shapes of cell end correlate with a displaced division site, leading to asymmetric cell division. Our results show that the division site position depends on the radii of curvatures of both ends. This new geometrical mechanism for the proper division plane positioning could be essential to achieve even partitioning of cellular material at each cell division.
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Affiliation(s)
- Xavier Le Goff
- Univ. Rennes, CNRS, IGDR (Institut de génétique et développement de Rennes) - UMR 6290, F-35000, Rennes, France
| | - Jordi Comelles
- Laboratory of Cell Physics ISIS/IGBMC, ISIS & icFRC, Université de Strasbourg & CNRS, 8 allée Gaspard Monge, 67000, Strasbourg, France
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
- Centre National de la Recherche Scientifique, UMR7104, Illkirch, France
- Institut National de la Santé et de la Recherche Médicale, U964, Illkirch, France
- Université de Strasbourg, Illkirch, France
| | - Charles Kervrann
- SERPICO Team, INRIA Rennes, Campus de Beaulieu, 35042, Rennes, France
| | - Daniel Riveline
- Laboratory of Cell Physics ISIS/IGBMC, ISIS & icFRC, Université de Strasbourg & CNRS, 8 allée Gaspard Monge, 67000, Strasbourg, France.
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France.
- Centre National de la Recherche Scientifique, UMR7104, Illkirch, France.
- Institut National de la Santé et de la Recherche Médicale, U964, Illkirch, France.
- Université de Strasbourg, Illkirch, France.
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7
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Comelles J, Fernández-Majada V, Berlanga-Navarro N, Acevedo V, Paszkowska K, Martínez E. Microfabrication of poly(acrylamide) hydrogels with independently controlled topography and stiffness. Biofabrication 2020; 12:025023. [PMID: 32050182 DOI: 10.1088/1758-5090/ab7552] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The stiffness and topography of a cell's extracellular matrix (ECM) are physical cues that play a key role in regulating processes that determine cellular fate and function. While substrate stiffness can dictate cell differentiation lineage, migration, and self-organization, topographical features can change the cell's differentiation profile or migration ability. Although both physical cues are present and intrinsic to the native tissues in vivo, in vitro studies have been hampered by the lack of technological set-ups that would be compatible with cell culture and characterization. In vitro studies therefore either focused on screening stiffness effects in cells cultured on flat substrates or on determining topography effects in cells cultured onto hard materials. Here, we present a reliable, microfabrication method to obtain well defined topographical structures of micrometer size (5-10 μm) on soft polyacrylamide hydrogels with tunable mechanical stiffness (3-145 kPa) that closely mimic the in vivo situation. Topographically microstructured polyacrylamide hydrogels are polymerized by capillary force lithography using flexible materials as molds. The topographical microstructures are resistant to swelling, can be conformally functionalized by ECM proteins and sustain the growth of cell lines (fibroblasts and myoblasts) and primary cells (mouse intestinal epithelial cells). Our method can independently control stiffness and topography, which allows to individually assess the contribution of each physical cue to cell response or to explore potential synergistic effects. We anticipate that our fabrication method will be of great utility in tissue engineering and biophysics, especially for applications where the use of complex in vivo-like environments is of paramount importance.
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Affiliation(s)
- Jordi Comelles
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), c/Baldiri Reixac 10-12, E-08028, Barcelona, Spain
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8
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Vila A, Torras N, Castaño AG, García-Díaz M, Comelles J, Pérez-Berezo T, Corregidor C, Castaño Ó, Engel E, Fernández-Majada V, Martínez E. Hydrogel co-networks of gelatine methacrylate and poly(ethylene glycol) diacrylate sustain 3D functional in vitro models of intestinal mucosa. Biofabrication 2020; 12:025008. [PMID: 31805546 DOI: 10.1088/1758-5090/ab5f50] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Mounting evidence supports the importance of the intestinal epithelial barrier and its permeability both in physiological and pathological conditions. Conventional in vitro models to evaluate intestinal permeability rely on the formation of tightly packed epithelial monolayers grown on hard substrates. These two-dimensional models lack the cellular and mechanical components of the non-epithelial compartment of the intestinal barrier, the stroma, which are key contributors to the barrier permeability in vivo. Thus, advanced in vitro models approaching the in vivo tissue composition are fundamental to improve precision in drug absorption predictions, to provide a better understanding of the intestinal biology, and to faithfully represent related diseases. Here, we generate photo-crosslinked gelatine methacrylate (GelMA)-poly(ethylene glycol) diacrylate (PEGDA) hydrogel co-networks that provide the required mechanical and biochemical features to mimic both the epithelial and stromal compartments of the intestinal mucosa, i.e. they are soft, cell adhesive and cell-loading friendly, and suitable for long-term culturing. We show that fibroblasts can be embedded in the GelMA-PEGDA hydrogels while epithelial cells can grow on top to form a mature epithelial monolayer that exhibits barrier properties which closely mimic those of the intestinal barrier in vivo, as shown by the physiologically relevant transepithelial electrical resistance (TEER) and permeability values. The presence of fibroblasts in the artificial stroma compartment accelerates the formation of the epithelial monolayer and boosts the recovery of the epithelial integrity upon temporary barrier disruption, demonstrating that our system is capable of successfully reproducing the interaction between different cellular compartments. As such, our hydrogel co-networks offer a technologically simple yet sophisticated approach to produce functional three-dimensional (3D) in vitro models of epithelial barriers with epithelial and stromal cells arranged in a spatially relevant manner and near-physiological functionality.
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Affiliation(s)
- Anna Vila
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Barcelona, Spain
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9
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Valls-Margarit M, Iglesias-García O, Di Guglielmo C, Sarlabous L, Tadevosyan K, Paoli R, Comelles J, Blanco-Almazán D, Jiménez-Delgado S, Castillo-Fernández O, Samitier J, Jané R, Martínez E, Raya Á. Engineered Macroscale Cardiac Constructs Elicit Human Myocardial Tissue-like Functionality. Stem Cell Reports 2019; 13:207-220. [PMID: 31231023 PMCID: PMC6626888 DOI: 10.1016/j.stemcr.2019.05.024] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 05/23/2019] [Accepted: 05/24/2019] [Indexed: 01/18/2023] Open
Abstract
In vitro surrogate models of human cardiac tissue hold great promise in disease modeling, cardiotoxicity testing, and future applications in regenerative medicine. However, the generation of engineered human cardiac constructs with tissue-like functionality is currently thwarted by difficulties in achieving efficient maturation at the cellular and/or tissular level. Here, we report on the design and implementation of a platform for the production of engineered cardiac macrotissues from human pluripotent stem cells (PSCs), which we term "CardioSlice." PSC-derived cardiomyocytes, together with human fibroblasts, are seeded into large 3D porous scaffolds and cultured using a parallelized perfusion bioreactor with custom-made culture chambers. Continuous electrical stimulation for 2 weeks promotes cardiomyocyte alignment and synchronization, and the emergence of cardiac tissue-like properties. These include electrocardiogram-like signals that can be readily measured on the surface of CardioSlice constructs, and a response to proarrhythmic drugs that is predictive of their effect in human patients.
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Affiliation(s)
- Maria Valls-Margarit
- Biomimetic Systems for Cell Engineering, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Olalla Iglesias-García
- Center of Regenerative Medicine in Barcelona (CMRB), L'Hospitalet de Llobregat, Barcelona, Spain; Center for Networked Biomedical Research on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona, Spain
| | - Claudia Di Guglielmo
- Center of Regenerative Medicine in Barcelona (CMRB), L'Hospitalet de Llobregat, Barcelona, Spain; Center for Networked Biomedical Research on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona, Spain
| | - Leonardo Sarlabous
- Center for Networked Biomedical Research on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona, Spain; Biomedical Signal Processing and Interpretation, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Barcelona, Spain; Department of Automatic Control, Universitat Politècnica de Catalunya - BarcelonaTech (UPC), Barcelona, Spain
| | - Karine Tadevosyan
- Center of Regenerative Medicine in Barcelona (CMRB), L'Hospitalet de Llobregat, Barcelona, Spain; Center for Networked Biomedical Research on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona, Spain
| | - Roberto Paoli
- Nanobioengineering, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Jordi Comelles
- Biomimetic Systems for Cell Engineering, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Dolores Blanco-Almazán
- Center for Networked Biomedical Research on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona, Spain; Biomedical Signal Processing and Interpretation, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Barcelona, Spain; Department of Automatic Control, Universitat Politècnica de Catalunya - BarcelonaTech (UPC), Barcelona, Spain
| | - Senda Jiménez-Delgado
- Center of Regenerative Medicine in Barcelona (CMRB), L'Hospitalet de Llobregat, Barcelona, Spain; Center for Networked Biomedical Research on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona, Spain
| | | | - Josep Samitier
- Center for Networked Biomedical Research on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona, Spain; Nanobioengineering, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Barcelona, Spain; Department of Electronics and Biomedical Engineering, University of Barcelona (UB), Barcelona, Spain
| | - Raimon Jané
- Center for Networked Biomedical Research on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona, Spain; Biomedical Signal Processing and Interpretation, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Barcelona, Spain; Department of Automatic Control, Universitat Politècnica de Catalunya - BarcelonaTech (UPC), Barcelona, Spain
| | - Elena Martínez
- Biomimetic Systems for Cell Engineering, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Barcelona, Spain; Center for Networked Biomedical Research on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona, Spain; Department of Electronics and Biomedical Engineering, University of Barcelona (UB), Barcelona, Spain.
| | - Ángel Raya
- Center of Regenerative Medicine in Barcelona (CMRB), L'Hospitalet de Llobregat, Barcelona, Spain; Center for Networked Biomedical Research on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona, Spain; Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain.
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Castaño AG, García-Díaz M, Torras N, Altay G, Comelles J, Martínez E. Dynamic photopolymerization produces complex microstructures on hydrogels in a moldless approach to generate a 3D intestinal tissue model. Biofabrication 2019; 11:025007. [DOI: 10.1088/1758-5090/ab0478] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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11
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Fodor É, Mehandia V, Comelles J, Thiagarajan R, Gov NS, Visco P, van Wijland F, Riveline D. Spatial Fluctuations at Vertices of Epithelial Layers: Quantification of Regulation by Rho Pathway. Biophys J 2019; 114:939-946. [PMID: 29490253 DOI: 10.1016/j.bpj.2017.12.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 12/19/2017] [Accepted: 12/20/2017] [Indexed: 01/14/2023] Open
Abstract
In living matter, shape fluctuations induced by acto-myosin are usually studied in vitro via reconstituted gels, whose properties are controlled by changing the concentrations of actin, myosin, and cross-linkers. Such an approach deliberately avoids consideration of the complexity of biochemical signaling inherent to living systems. Acto-myosin activity inside living cells is mainly regulated by the Rho signaling pathway, which is composed of multiple layers of coupled activators and inhibitors. Here, we investigate how such a pathway controls the dynamics of confluent epithelial tissues by tracking the displacements of the junction points between cells. Using a phenomenological model to analyze the vertex fluctuations, we rationalize the effects of different Rho signaling targets on the emergent tissue activity by quantifying the effective diffusion coefficient, and the persistence time and length of the fluctuations. Our results reveal an unanticipated correlation between layers of activation/inhibition and spatial fluctuations within tissues. Overall, this work connects regulation via biochemical signaling with mesoscopic spatial fluctuations, with potential application to the study of structural rearrangements in epithelial tissues.
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Affiliation(s)
- Étienne Fodor
- DAMTP, Centre for Mathematical Sciences, University of Cambridge, Cambridge, United Kingdom; Laboratoire Matière et Systèmes Complexes, UMR 7057 CNRS/P7, Université Paris Diderot, Paris cedex 13, France
| | - Vishwajeet Mehandia
- Laboratory of Cell Physics, ISIS/IGBMC, Université de Strasbourg and CNRS (UMR 7006), Strasbourg, France; Development and Stem Cells Program, IGBMC, CNRS (UMR 7104), INSERM (U964), Université de Strasbourg, Illkirch, France; School of Mechanical, Materials and Energy Engineering, Indian Institute of Technology, Ropar, India
| | - Jordi Comelles
- Laboratory of Cell Physics, ISIS/IGBMC, Université de Strasbourg and CNRS (UMR 7006), Strasbourg, France; Development and Stem Cells Program, IGBMC, CNRS (UMR 7104), INSERM (U964), Université de Strasbourg, Illkirch, France
| | - Raghavan Thiagarajan
- Laboratory of Cell Physics, ISIS/IGBMC, Université de Strasbourg and CNRS (UMR 7006), Strasbourg, France; Development and Stem Cells Program, IGBMC, CNRS (UMR 7104), INSERM (U964), Université de Strasbourg, Illkirch, France
| | - Nir S Gov
- Department of Chemical Physics, Weizmann Institute of Science, Rehovot, Israel
| | - Paolo Visco
- Laboratoire Matière et Systèmes Complexes, UMR 7057 CNRS/P7, Université Paris Diderot, Paris cedex 13, France
| | - Frédéric van Wijland
- Laboratoire Matière et Systèmes Complexes, UMR 7057 CNRS/P7, Université Paris Diderot, Paris cedex 13, France
| | - Daniel Riveline
- Laboratory of Cell Physics, ISIS/IGBMC, Université de Strasbourg and CNRS (UMR 7006), Strasbourg, France; Development and Stem Cells Program, IGBMC, CNRS (UMR 7104), INSERM (U964), Université de Strasbourg, Illkirch, France.
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12
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Osmani N, Pontabry J, Comelles J, Fekonja N, Goetz JG, Riveline D, Georges-Labouesse E, Labouesse M. An Arf6- and caveolae-dependent pathway links hemidesmosome remodeling and mechanoresponse. Mol Biol Cell 2017; 29:435-451. [PMID: 29237817 PMCID: PMC6014169 DOI: 10.1091/mbc.e17-06-0356] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 12/06/2017] [Accepted: 12/08/2017] [Indexed: 01/08/2023] Open
Abstract
Hemidesmosomes are epithelial-specific cell-matrix adhesions stably anchoring the intracellular keratin network to the extracellular matrix and providing mechanical resilience to epithelia. The small GTPase Arf6 and caveolae are essential for their remodeling, notably in response to external mechanical cues. Hemidesmosomes (HDs) are epithelial-specific cell–matrix adhesions that stably anchor the intracellular keratin network to the extracellular matrix. Although their main role is to protect the epithelial sheet from external mechanical strain, how HDs respond to mechanical stress remains poorly understood. Here we identify a pathway essential for HD remodeling and outline its role with respect to α6β4 integrin recycling. We find that α6β4 integrin chains localize to the plasma membrane, caveolae, and ADP-ribosylation factor-6+ (Arf6+) endocytic compartments. Based on fluorescence recovery after photobleaching and endocytosis assays, integrin recycling between both sites requires the small GTPase Arf6 but neither caveolin1 (Cav1) nor Cavin1. Strikingly, when keratinocytes are stretched or hypo-osmotically shocked, α6β4 integrin accumulates at cell edges, whereas Cav1 disappears from it. This process, which is isotropic relative to the orientation of stretch, depends on Arf6, Cav1, and Cavin1. We propose that mechanically induced HD growth involves the isotropic flattening of caveolae (known for their mechanical buffering role) associated with integrin diffusion and turnover.
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Affiliation(s)
- Naël Osmani
- IGBMC, Development and Stem Cells Program, CNRS (UMR 7104)/INSERM (U964), 67400 Illkirch, France.,Inserm U1109, MN3T, 67200 Strasbourg, France.,Université de Strasbourg, 67000 Strasbourg, France.,LabEx Medalis, Université de Strasbourg, Strasbourg 67000, France.,Fédération de Médecine Translationnelle de Strasbourg (FMTS), 67000 Strasbourg, France
| | - Julien Pontabry
- IGBMC, Development and Stem Cells Program, CNRS (UMR 7104)/INSERM (U964), 67400 Illkirch, France.,Université de Strasbourg, 67000 Strasbourg, France
| | - Jordi Comelles
- IGBMC, Development and Stem Cells Program, CNRS (UMR 7104)/INSERM (U964), 67400 Illkirch, France.,Université de Strasbourg, 67000 Strasbourg, France.,Laboratory of Cell Physics, ISIS/IGBMC, CNRS UMR 7006, 67000 Strasbourg, France
| | - Nina Fekonja
- Inserm U1109, MN3T, 67200 Strasbourg, France.,Université de Strasbourg, 67000 Strasbourg, France.,LabEx Medalis, Université de Strasbourg, Strasbourg 67000, France.,Fédération de Médecine Translationnelle de Strasbourg (FMTS), 67000 Strasbourg, France
| | - Jacky G Goetz
- Inserm U1109, MN3T, 67200 Strasbourg, France.,Université de Strasbourg, 67000 Strasbourg, France.,LabEx Medalis, Université de Strasbourg, Strasbourg 67000, France.,Fédération de Médecine Translationnelle de Strasbourg (FMTS), 67000 Strasbourg, France
| | - Daniel Riveline
- IGBMC, Development and Stem Cells Program, CNRS (UMR 7104)/INSERM (U964), 67400 Illkirch, France .,Université de Strasbourg, 67000 Strasbourg, France.,Laboratory of Cell Physics, ISIS/IGBMC, CNRS UMR 7006, 67000 Strasbourg, France
| | - Elisabeth Georges-Labouesse
- IGBMC, Development and Stem Cells Program, CNRS (UMR 7104)/INSERM (U964), 67400 Illkirch, France.,Université de Strasbourg, 67000 Strasbourg, France
| | - Michel Labouesse
- IGBMC, Development and Stem Cells Program, CNRS (UMR 7104)/INSERM (U964), 67400 Illkirch, France .,Université de Strasbourg, 67000 Strasbourg, France.,UMR7622-CNRS, IBPS, Sorbonne Université, 75005 Paris, France
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Caballero D, Comelles J, Piel M, Voituriez R, Riveline D. Ratchetaxis: Long-Range Directed Cell Migration by Local Cues. Trends Cell Biol 2016; 25:815-827. [PMID: 26615123 DOI: 10.1016/j.tcb.2015.10.009] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 10/07/2015] [Accepted: 10/12/2015] [Indexed: 01/22/2023]
Abstract
Directed cell migration is usually thought to depend on the presence of long-range gradients of either chemoattractants or physical properties such as stiffness or adhesion. However, in vivo, chemical or mechanical gradients have not systematically been observed. Here we review recent in vitro experiments, which show that other types of spatial guidance cues can bias cell motility. Introducing local geometrical or mechanical anisotropy in the cell environment, such as adhesive/topographical microratchets or tilted micropillars, show that local and periodic external cues can direct cell motion. Together with modeling, these experiments suggest that cell motility can be viewed as a stochastic phenomenon, which can be biased by various types of local cues, leading to directional migration.
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Affiliation(s)
- David Caballero
- Laboratory of Cell Physics ISIS/IGBMC, CNRS and University of Strasbourg, Strasbourg, France; Development and Stem Cells Program, IGBMC, CNRS, INSERM and University of Strasbourg, Illkirch, France
| | - Jordi Comelles
- Laboratory of Cell Physics ISIS/IGBMC, CNRS and University of Strasbourg, Strasbourg, France; Development and Stem Cells Program, IGBMC, CNRS, INSERM and University of Strasbourg, Illkirch, France
| | - Matthieu Piel
- Institut Curie, PSL Research University, CNRS, UMR 144, Bio6, F-75005, Paris, France.
| | - Raphaël Voituriez
- Laboratoire de Physique Théorique de la Matière Condensée, CNRS UMR 7600, Université Pierre et Marie Curie, Paris, France; Laboratoire Jean Perrin, CNRS UMR 8237, Université Pierre et Marie Curie, Paris, France.
| | - Daniel Riveline
- Laboratory of Cell Physics ISIS/IGBMC, CNRS and University of Strasbourg, Strasbourg, France; Development and Stem Cells Program, IGBMC, CNRS, INSERM and University of Strasbourg, Illkirch, France.
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Comelles J, Caballero D, Voituriez R, Hortigüela V, Wollrab V, Godeau AL, Samitier J, Martínez E, Riveline D. Cells as active particles in asymmetric potentials: motility under external gradients. Biophys J 2015; 107:1513-22. [PMID: 25296303 DOI: 10.1016/j.bpj.2014.08.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 07/11/2014] [Accepted: 08/01/2014] [Indexed: 12/11/2022] Open
Abstract
Cell migration is a crucial event during development and in disease. Mechanical constraints and chemical gradients can contribute to the establishment of cell direction, but their respective roles remain poorly understood. Using a microfabricated topographical ratchet, we show that the nucleus dictates the direction of cell movement through mechanical guidance by its environment. We demonstrate that this direction can be tuned by combining the topographical ratchet with a biochemical gradient of fibronectin adhesion. We report competition and cooperation between the two external cues. We also quantitatively compare the measurements associated with the trajectory of a model that treats cells as fluctuating particles trapped in a periodic asymmetric potential. We show that the cell nucleus contributes to the strength of the trap, whereas cell protrusions guided by the adhesive gradients add a constant tunable bias to the direction of cell motion.
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Affiliation(s)
- Jordi Comelles
- Laboratory of Cell Physics ISIS/IGBMC, CNRS UMR 7006 and University of Strasbourg, Strasbourg, France; Development and Stem Cells Program, IGBMC, CNRS UMR 7104, INSERM (U964) and University of Strasbourg, Illkirch, France; Nanobioengineering Group, Institute for Bioengineering of Catalonia (IBEC), Barcelona, Spain
| | - David Caballero
- Laboratory of Cell Physics ISIS/IGBMC, CNRS UMR 7006 and University of Strasbourg, Strasbourg, France; Development and Stem Cells Program, IGBMC, CNRS UMR 7104, INSERM (U964) and University of Strasbourg, Illkirch, France
| | - Raphaël Voituriez
- Laboratoire de Physique Théorique de la Matière Condensée, CNRS UMR 7600, Université Pierre et Marie Curie, Paris, France; Laboratoire Jean Perrin, CNRS FRE 3231, Université Pierre et Marie Curie, Paris, France
| | - Verónica Hortigüela
- Biomimetic Systems for Cell Engineering, Institute for Bioengineering of Catalonia (IBEC), Barcelona, Spain; Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina, Zaragoza, Spain
| | - Viktoria Wollrab
- Laboratory of Cell Physics ISIS/IGBMC, CNRS UMR 7006 and University of Strasbourg, Strasbourg, France; Development and Stem Cells Program, IGBMC, CNRS UMR 7104, INSERM (U964) and University of Strasbourg, Illkirch, France
| | - Amélie Luise Godeau
- Laboratory of Cell Physics ISIS/IGBMC, CNRS UMR 7006 and University of Strasbourg, Strasbourg, France; Development and Stem Cells Program, IGBMC, CNRS UMR 7104, INSERM (U964) and University of Strasbourg, Illkirch, France
| | - Josep Samitier
- Nanobioengineering Group, Institute for Bioengineering of Catalonia (IBEC), Barcelona, Spain; Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina, Zaragoza, Spain; Department of Electronics, University of Barcelona, Barcelona, Spain
| | - Elena Martínez
- Biomimetic Systems for Cell Engineering, Institute for Bioengineering of Catalonia (IBEC), Barcelona, Spain; Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina, Zaragoza, Spain; Department of Electronics, University of Barcelona, Barcelona, Spain
| | - Daniel Riveline
- Laboratory of Cell Physics ISIS/IGBMC, CNRS UMR 7006 and University of Strasbourg, Strasbourg, France; Development and Stem Cells Program, IGBMC, CNRS UMR 7104, INSERM (U964) and University of Strasbourg, Illkirch, France.
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Lagunas A, Comelles J, Oberhansl S, Hortigüela V, Martínez E, Samitier J. Continuous bone morphogenetic protein-2 gradients for concentration effect studies on C2C12 osteogenic fate. Nanomedicine 2013; 9:694-701. [PMID: 23313904 DOI: 10.1016/j.nano.2012.12.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2012] [Accepted: 12/26/2012] [Indexed: 11/20/2022]
Abstract
UNLABELLED Cells can respond to small changes in a varying concentration of exogenous signaling molecules. Here we propose the use of continuous surface chemical gradients for the in-depth study of dose-dependent effects on cells. A continuous surface gradient of bone morphogenetic protein-2 (BMP-2) is presented. The gradient covers a narrow range of surface densities (from 1.4 to 2.3 pmol/cm(2)) with a shallow slope (0.9 pmol/cm(3)). These characteristics represent a quasi-homogeneous surface concentration at the cell scale, which is crucial for cell screening studies. Cell fate evaluation at early stages of osteogenesis in C2C12 cells, indicates the potential of continuous gradients for in vitro screening applications. FROM THE CLINICAL EDITOR The authors propose the use of surface-applied continuous chemical gradients for in-depth study of dose-dependent effects on cells. The method is demonstrated using BMP-2 proteins on C2C12 cells as a model system.
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Affiliation(s)
- Anna Lagunas
- Centro de Investigación Biomédica en Red. Bioingeniería, Biomateriales y Nanomedicina (Ciber-bbn), C/ María de Luna 11, Edificio CEEI, 50018 Zaragoza, Spain.
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Tort N, Salvador JP, Aviñó A, Eritja R, Comelles J, Martínez E, Samitier J, Marco MP. Synthesis of steroid-oligonucleotide conjugates for a DNA site-encoded SPR immunosensor. Bioconjug Chem 2012; 23:2183-91. [PMID: 23106618 DOI: 10.1021/bc300138p] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The excellent self-assembling properties of DNA and the excellent specificity of the antibodies to detect analytes of small molecular weight under competitive conditions have been combined in this study. Three oligonucleotide sequences (N(1)up, N(2)up, and N(3)up) have been covalently attached to three steroidal haptens (8, hG, and 13) of three anabolic-androgenic steroids (AAS), stanozolol (ST), tetrahydrogestrinone (THG), and boldenone (B), respectively. The synthesis of steroid-oligonucleotide conjugates has been performed by the reaction of oligonucleotides carrying amino groups with carboxyl acid derivatives of steroidal haptens. Due to the chemical nature of the steroid derivatives, two methods for coupling the haptens and the ssDNA have been studied: a solid-phase coupling strategy and a solution-phase coupling strategy. Specific antibodies against ST, THG, and B have been used in this study to asses the possibility of using the self-assembling properties of the DNA to prepare biofunctional SPR gold chips based on the immobilization of haptens, by hybridization with the complementary oligonucleotide strands possessing SH groups previously immobilized. The capture of the steroid-oligonucleotide conjugates and subsequent binding of the specific antibodies can be monitored on the sensogram due to variations produced on the refractive index on top of the gold chip. The resulting steroid-oligonucleotide conjugates retain the hybridization and specific binding properties of oligonucleotides and haptens as demonstrated by thermal denaturation experiments and surface plasmon resonance (SPR).
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Affiliation(s)
- Nuria Tort
- Applied Molecular Receptors Group (AMRg), Chemical and Biomolecular Nanotechnology Department, IQAC-CSIC, Jordi Girona, 18-26, 08034-Barcelona, Spain
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Comelles J, Hortigüela V, Samitier J, Martínez E. Versatile gradients of covalently bound proteins on microstructured substrates. Langmuir 2012; 28:13688-13697. [PMID: 22913232 DOI: 10.1021/la3025638] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In this work, we propose an easy method to produce highly tunable gradients of covalently bound proteins on topographically modified poly(methyl methacrylate). We used a microfluidic approach to obtain linear gradients with high slope (0.5 pmol·cm(-2)·mm(-1)), relevant at the single-cell level. These protein gradients were characterized using fluorescence microscopy and surface plasmon resonance. Both experimental results and theoretical modeling on the protein gradients generated have proved them to be highly reproducible, stable up to 7 days, and easily tunable. This method enables formation of versatile cell culture platforms combining both complex biochemical and physical cues in an attempt to approach in vitro cell culture methods to in vivo cellular microenvironments.
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Affiliation(s)
- Jordi Comelles
- Institute for Bioengineering of Catalonia, C/Baldiri Reixac 11-15, 08028 Barcelona, Spain.
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Lagunas A, Comelles J, Martínez E, Samitier J. Universal chemical gradient platforms using poly(methyl methacrylate) based on the biotin-streptavidin interaction for biological applications. Langmuir 2010; 26:14154-14161. [PMID: 20712344 DOI: 10.1021/la102640w] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
This article describes a simple method for the construction of a universal surface chemical gradient platform based on the biotin-streptavidin model. In this approach, surface chemical gradients were prepared in poly(methyl methacrylate) (PMMA), a biocompatible polymer, by a controlled hydrolysis procedure. The physicochemical properties of the resulting modified surfaces were extensively characterized. Chemical analysis carried out via time-of-flight secondary ion mass spectrometry (ToF-SIMS) and X-ray photoelectron spectroscopy (XPS) showed the formation of a smooth, highly controllable carboxylic acid gradient of increasing concentration along the sample surface. Atomic force microscopy (AFM) and contact angle (CA) results indicate that, in contrast with most of the chemical gradient methods published in the literature, the chemical modification of the polymer surface barely affects its physical properties. The introduction of carboxylic acid functionality along the surface was then used for biomolecule anchoring. For this purpose, the surface was activated and derivatized first with biotin and finally with streptavidin (SAV) in a directed orientation fashion. The SAV gradient was qualitatively assessed by fluorescence microscopy analysis and quantified by surface plasmon resonance (SPR) in order to establish a quantitative relationship between SAV surface densities and the surface location. The usefulness of the fabrication method described for biological applications was tested by immobilizing biotinylated bradykinin onto the SAV gradient. This proof-of-concept application shows the effectiveness of the concentration range of the gradient because the effects of bradykinin on cell morphology were observed to increase gradually with increasing drug concentrations. The intrinsic characteristics of the fabricated gradient platform (absence of physicochemical modifications other than those due to the biomolecules included) allow us to attribute cell behavior unequivocally to the biomolecule surface density changes.
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Affiliation(s)
- Anna Lagunas
- Centro de Investigación Biomédica en Red. Bioingeniería, Biomateriales y Nanomedicina, 50018 Zaragoza, Spain.
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Martínez E, Lagunas A, Mills CA, Rodríguez-Seguí S, Estévez M, Oberhansl S, Comelles J, Samitier J. Stem cell differentiation by functionalized micro- and nanostructured surfaces. Nanomedicine (Lond) 2009; 4:65-82. [PMID: 19093897 DOI: 10.2217/17435889.4.1.65] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
New fabrication technologies and, in particular, new nanotechnologies have provided biomaterial and biomedical scientists with enormous possibilities when designing customized supports and scaffolds with controlled nanoscale topography and chemistry. The main issue now is how to effectively design these components and choose the appropriate combination of structure and chemistry to tailor towards applications as challenging and complex as stem cell differentiation. Occasionally, an incomplete knowledge of the fundamentals of biological differentiation processes has hampered this issue. However, the recent technological advances in creating controlled cellular microenvironments can be seen as a powerful tool for furthering fundamental biology studies. This article reviews the main strategies followed to achieve solutions to this challenge, particularly emphasizing the working hypothesis followed by the authors to elucidate the mechanisms behind the observed effects of structured surfaces on cell behavior.
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Affiliation(s)
- E Martínez
- Nanobioengineering group, Institute for Bioengineering of Catalonia (IBEC), Barcelona, Spain.
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