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Gauquelin E, Kuromiya K, Namba T, Ikawa K, Fujita Y, Ishihara S, Sugimura K. Mechanical convergence in mixed populations of mammalian epithelial cells. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2024; 47:21. [PMID: 38538808 PMCID: PMC10973031 DOI: 10.1140/epje/s10189-024-00415-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 03/05/2024] [Indexed: 04/09/2024]
Abstract
Tissues consist of cells with different molecular and/or mechanical properties. Measuring the forces and stresses in mixed-cell populations is essential for understanding the mechanisms by which tissue development, homeostasis, and disease emerge from the cooperation of distinct cell types. However, many previous studies have primarily focused their mechanical measurements on dissociated cells or aggregates of a single-cell type, leaving the mechanics of mixed-cell populations largely unexplored. In the present study, we aimed to elucidate the influence of interactions between different cell types on cell mechanics by conducting in situ mechanical measurements on a monolayer of mammalian epithelial cells. Our findings revealed that while individual cell types displayed varying magnitudes of traction and intercellular stress before mixing, these mechanical values shifted in the mixed monolayer, becoming nearly indistinguishable between the cell types. Moreover, by analyzing a mixed-phase model of active tissues, we identified physical conditions under which such mechanical convergence is induced. Overall, the present study underscores the importance of in situ mechanical measurements in mixed-cell populations to deepen our understanding of the mechanics of multicellular systems.
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Affiliation(s)
- Estelle Gauquelin
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, 113-0032, Japan
| | - Keisuke Kuromiya
- Department of Molecular Oncology, Graduate School of Medicine, Kyoto University, Kyoto, 606-8501, Japan
| | - Toshinori Namba
- Universal Biology Institute, The University of Tokyo, Tokyo, 113-0033, Japan
- Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, 153-0041, Japan
| | - Keisuke Ikawa
- Division of Biological Science, Graduate School of Science, Nagoya University, Aichi, 464-8602, Japan
| | - Yasuyuki Fujita
- Department of Molecular Oncology, Graduate School of Medicine, Kyoto University, Kyoto, 606-8501, Japan
| | - Shuji Ishihara
- Universal Biology Institute, The University of Tokyo, Tokyo, 113-0033, Japan.
- Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, 153-0041, Japan.
| | - Kaoru Sugimura
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, 113-0032, Japan.
- Universal Biology Institute, The University of Tokyo, Tokyo, 113-0033, Japan.
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, 277-8561, Japan.
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2
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de Plater L, Firmin J, Maître JL. Mechanical strengthening of cell-cell adhesion during mouse embryo compaction. Biophys J 2024:S0006-3495(24)00208-X. [PMID: 38528761 DOI: 10.1016/j.bpj.2024.03.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/26/2024] [Accepted: 03/22/2024] [Indexed: 03/27/2024] Open
Abstract
Compaction is the first morphogenetic movement of the eutherian mammals and involves a developmentally regulated adhesion process. Previous studies investigated cellular and mechanical aspects of compaction. During mouse and human compaction, cells spread onto each other as a result of a contractility-mediated increase in surface tension pulling at the edges of their cell-cell contacts. However, how compaction may affect the mechanical stability of cell-cell contacts remains unknown. Here, we used a dual pipette aspiration assay on cell doublets to quantitatively analyze the mechanical stability of compacting mouse embryos. We measured increased mechanical stability of contacts with rupture forces growing from 40 to 70 nN, which was highly correlated with cell-cell contact expansion. Analyzing the dynamic molecular reorganization of cell-cell contacts, we find minimal recruitment of the cell-cell adhesion molecule Cdh1 (also known as E-cadherin) to contacts but we observe its reorganization into a peripheral adhesive ring. However, this reorganization is not associated with increased effective bond density, contrary to previous reports in other adhesive systems. Using genetics, we reduce the levels of Cdh1 or replace it with a chimeric adhesion molecule composed of the extracellular domain of Cdh1 and the intracellular domain of Cdh2 (also known as N-cadherin). We find that reducing the levels of Cdh1 impairs the mechanical stability of cell-cell contacts due to reduced contact growth, which nevertheless show higher effective bond density than wild-type contacts of similar size. On the other hand, chimeric adhesion molecules cannot form large or strong contacts indicating that the intracellular domain of Cdh2 is unable to reorganize contacts and/or is mechanically weaker than the one of Cdh1 in mouse embryos. Together, we find that mouse embryo compaction mechanically strengthens cell-cell adhesion via the expansion of Cdh1 adhesive rings that maintain pre-compaction levels of effective bond density.
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Affiliation(s)
- Ludmilla de Plater
- Institut Curie, Université PSL, CNRS UMR3215, INSERM U934, Paris, France
| | - Julie Firmin
- Institut Curie, Université PSL, CNRS UMR3215, INSERM U934, Paris, France; Service de Biologie de la Reproduction - CECOS, Paris Centre Hospital, APHP Centre, Université Paris Cité, Paris, France
| | - Jean-Léon Maître
- Institut Curie, Université PSL, CNRS UMR3215, INSERM U934, Paris, France.
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3
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McCarthy E, Manna RK, Damavandi O, Manning ML. Demixing in Binary Mixtures with Differential Diffusivity at High Density. PHYSICAL REVIEW LETTERS 2024; 132:098301. [PMID: 38489657 DOI: 10.1103/physrevlett.132.098301] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 12/15/2023] [Accepted: 01/30/2024] [Indexed: 03/17/2024]
Abstract
Spontaneous phase separation, or demixing, is important in biological phenomena such as cell sorting. In particle-based models, an open question is whether differences in diffusivity can drive such demixing. While differential-diffusivity-induced phase separation occurs in mixtures with a packing fraction up to 0.7 [S. N. Weber et al. Binary mixtures of particles with different diffusivities demix, Phys. Rev. Lett. 116, 058301 (2016)PRLTAO0031-900710.1103/PhysRevLett.116.058301], here we investigate whether demixing persists at even higher densities relevant for cells. For particle packing fractions between 0.7 and 1.0 the system demixes, but at packing fractions above unity the system remains mixed, exposing re-entrant behavior in the phase diagram that occurs when phase separation can no longer drive a change in entropy production at high densities. We also find that a confluent Voronoi model for tissues does not phase separate, consistent with particle-based simulations.
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Affiliation(s)
- Erin McCarthy
- Department of Physics and BioInspired Institute, Syracuse University, Syracuse, New York 13244, USA
| | - Raj Kumar Manna
- Department of Physics and BioInspired Institute, Syracuse University, Syracuse, New York 13244, USA
| | - Ojan Damavandi
- Department of Physics and BioInspired Institute, Syracuse University, Syracuse, New York 13244, USA
| | - M Lisa Manning
- Department of Physics and BioInspired Institute, Syracuse University, Syracuse, New York 13244, USA
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4
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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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5
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Wu Z, Huang D, Wang J, Zhao Y, Sun W, Shen X. Engineering Heterogeneous Tumor Models for Biomedical Applications. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2304160. [PMID: 37946674 PMCID: PMC10767453 DOI: 10.1002/advs.202304160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 09/16/2023] [Indexed: 11/12/2023]
Abstract
Tumor tissue engineering holds great promise for replicating the physiological and behavioral characteristics of tumors in vitro. Advances in this field have led to new opportunities for studying the tumor microenvironment and exploring potential anti-cancer therapeutics. However, the main obstacle to the widespread adoption of tumor models is the poor understanding and insufficient reconstruction of tumor heterogeneity. In this review, the current progress of engineering heterogeneous tumor models is discussed. First, the major components of tumor heterogeneity are summarized, which encompasses various signaling pathways, cell proliferations, and spatial configurations. Then, contemporary approaches are elucidated in tumor engineering that are guided by fundamental principles of tumor biology, and the potential of a bottom-up approach in tumor engineering is highlighted. Additionally, the characterization approaches and biomedical applications of tumor models are discussed, emphasizing the significant role of engineered tumor models in scientific research and clinical trials. Lastly, the challenges of heterogeneous tumor models in promoting oncology research and tumor therapy are described and key directions for future research are provided.
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Affiliation(s)
- Zhuhao Wu
- Department of Rheumatology and ImmunologyNanjing Drum Tower HospitalSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjing210096China
| | - Danqing Huang
- Department of Rheumatology and ImmunologyNanjing Drum Tower HospitalSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjing210096China
| | - Jinglin Wang
- Department of Rheumatology and ImmunologyNanjing Drum Tower HospitalSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjing210096China
| | - Yuanjin Zhao
- Department of Rheumatology and ImmunologyNanjing Drum Tower HospitalSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjing210096China
- Department of Gastrointestinal SurgeryThe First Affiliated HospitalWenzhou Medical UniversityWenzhou325035China
| | - Weijian Sun
- Department of Gastrointestinal SurgeryThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhou325027China
| | - Xian Shen
- Department of Rheumatology and ImmunologyNanjing Drum Tower HospitalSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjing210096China
- Department of Gastrointestinal SurgeryThe First Affiliated HospitalWenzhou Medical UniversityWenzhou325035China
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6
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Lawson-Keister E, Zhang T, Nazari F, Fagotto F, Manning ML. Differences in boundary behavior in the 3D vertex and Voronoi models. PLoS Comput Biol 2024; 20:e1011724. [PMID: 38181065 PMCID: PMC10796063 DOI: 10.1371/journal.pcbi.1011724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 01/18/2024] [Accepted: 11/30/2023] [Indexed: 01/07/2024] Open
Abstract
An important open question in the modeling of biological tissues is how to identify the right scale for coarse-graining, or equivalently, the right number of degrees of freedom. For confluent biological tissues, both vertex and Voronoi models, which differ only in their representation of the degrees of freedom, have effectively been used to predict behavior, including fluid-solid transitions and cell tissue compartmentalization, which are important for biological function. However, recent work in 2D has hinted that there may be differences between the two models in systems with heterotypic interfaces between two tissue types, and there is a burgeoning interest in 3D tissue models. Therefore, we compare the geometric structure and dynamic sorting behavior in mixtures of two cell types in both 3D vertex and Voronoi models. We find that while the cell shape indices exhibit similar trends in both models, the registration between cell centers and cell orientation at the boundary are significantly different between the two models. We demonstrate that these macroscopic differences are caused by changes to the cusp-like restoring forces introduced by the different representations of the degrees of freedom at the boundary, and that the Voronoi model is more strongly constrained by forces that are an artifact of the way the degrees of freedom are represented. This suggests that vertex models may be more appropriate for 3D simulations of tissues with heterotypic contacts.
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Affiliation(s)
- Elizabeth Lawson-Keister
- Department of Physics and BioInspired Syracuse, Syracuse University, Syracuse, New York, United States of America
| | - Tao Zhang
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Fatemeh Nazari
- School of Biomedical Engineering, Ecole Centrale de Lille, Villeneuve-d’Ascq, France
- Centre de Recherche en Biologie cellulaire de Montpellier, University of Montpellier and CNRS, Montpellier, France
| | - François Fagotto
- Centre de Recherche en Biologie cellulaire de Montpellier, University of Montpellier and CNRS, Montpellier, France
| | - M. Lisa Manning
- Department of Physics and BioInspired Syracuse, Syracuse University, Syracuse, New York, United States of America
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7
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Viola JM, Liu J, Huang A, Grindel SH, Prahl LS, Hughes AJ. Rho/ROCK activity tunes cell compartment segregation and differentiation in nephron-forming niches. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.08.566308. [PMID: 37986773 PMCID: PMC10659296 DOI: 10.1101/2023.11.08.566308] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Controlling the time and place of nephron formation in vitro would improve nephron density and connectivity in next-generation kidney replacement tissues. Recent developments in kidney organoid technology have paved the way to achieving self-sustaining nephrogenic niches in vitro. The physical and geometric structure of the niche are key control parameters in tissue engineering approaches. However, their relationship to nephron differentiation is unclear. Here we investigate the relationship between niche geometry, cell compartment mixing, and nephron differentiation by targeting the Rho/ROCK pathway, a master regulator of the actin cytoskeleton. We find that the ROCK inhibitor Y-27632 increases mixing between nephron progenitor and stromal compartments in native mouse embryonic kidney niches, and also increases nephrogenesis. Similar increases are also seen in reductionist mouse primary cell and human induced pluripotent stem cell (iPSC)-derived organoids perturbed by Y-27632, dependent on the presence of stromal cells. Our data indicate that niche organization is a determinant of nephron formation rate, bringing renewed focus to the spatial context of cell-cell interactions in kidney tissue engineering efforts.
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Affiliation(s)
- John M. Viola
- Department of Bioengineering, University of Pennsylvania, Philadelphia, 19104, PA, USA
- Bioengineering Graduate Group, University of Pennsylvania, Philadelphia, 19104, PA, USA
| | - Jiageng Liu
- Department of Bioengineering, University of Pennsylvania, Philadelphia, 19104, PA, USA
- Bioengineering Graduate Group, 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
| | - Samuel H. Grindel
- 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
| | - 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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8
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Hartmann J, Mayor R. Self-organized collective cell behaviors as design principles for synthetic developmental biology. Semin Cell Dev Biol 2023; 141:63-73. [PMID: 35450765 DOI: 10.1016/j.semcdb.2022.04.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Accepted: 04/12/2022] [Indexed: 10/18/2022]
Abstract
Over the past two decades, molecular cell biology has graduated from a mostly analytic science to one with substantial synthetic capability. This success is built on a deep understanding of the structure and function of biomolecules and molecular mechanisms. For synthetic biology to achieve similar success at the scale of tissues and organs, an equally deep understanding of the principles of development is required. Here, we review some of the central concepts and recent progress in tissue patterning, morphogenesis and collective cell migration and discuss their value for synthetic developmental biology, emphasizing in particular the power of (guided) self-organization and the role of theoretical advances in making developmental insights applicable in synthesis.
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Affiliation(s)
- Jonas Hartmann
- Department of Cell and Developmental Biology, University College London, Gower Street, London WC1E 6BT, UK.
| | - Roberto Mayor
- Department of Cell and Developmental Biology, University College London, Gower Street, London WC1E 6BT, UK.
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9
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Prahl LS, Porter CM, Liu J, Viola JM, Hughes AJ. Independent control over cell patterning and adhesion on hydrogel substrates for tissue interface mechanobiology. iScience 2023; 26:106657. [PMID: 37168559 PMCID: PMC10164898 DOI: 10.1016/j.isci.2023.106657] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/27/2023] [Accepted: 04/06/2023] [Indexed: 05/13/2023] Open
Abstract
Tissue boundaries and interfaces are engines of morphogenesis in vivo. However, despite a wealth of micropatterning approaches available to control tissue size, shape, and mechanical environment in vitro, fine-scale spatial control of cell positioning within tissue constructs remains an engineering challenge. To address this, we augment DNA "velcro" technology for selective patterning of ssDNA-labeled cells on mechanically defined photoactive polyacrylamide hydrogels. Hydrogels bearing photopatterned single-stranded DNA (ssDNA) features for cell capture are then co-functionalized with extracellular matrix (ECM) proteins to support subsequent adhesion of patterned tissues. ECM protein co-functionalization does not alter ssDNA pattern fidelity, cell capture, or hydrogel elastic stiffness. This approach enables mechanobiology studies and measurements of signaling activity at dynamic cell interfaces with precise initial patterning. Combining DNA velcro patterning and ECM functionalization provides independent control of initial cell placement, adhesion, and mechanics, constituting a new tool for studying biological interfaces and for programming multicellular interactions in engineered tissues.
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Affiliation(s)
- Louis S. Prahl
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Catherine M. Porter
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Jiageng Liu
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - John M. Viola
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Alex J. Hughes
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
- Department of Cell & Developmental Biology, University of Pennsylvania, Philadelphia, PA 19104, USA
- Institute for Regenerative Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
- Corresponding author
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10
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Fujiwara M, Imamura M, Matsushita K, Roszak P, Yamashino T, Hosokawa Y, Nakajima K, Fujimoto K, Miyashima S. Patterned proliferation orients tissue-wide stress to control root vascular symmetry in Arabidopsis. Curr Biol 2023; 33:886-898.e8. [PMID: 36787744 DOI: 10.1016/j.cub.2023.01.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 11/24/2022] [Accepted: 01/18/2023] [Indexed: 02/16/2023]
Abstract
Symmetric tissue alignment is pivotal to the functions of plant vascular tissue, such as long-distance molecular transport and lateral organ formation. During the vascular development of the Arabidopsis roots, cytokinins initially determine cell-type boundaries among vascular stem cells and subsequently promote cell proliferation to establish vascular tissue symmetry. Although it is unknown whether and how the symmetry of initially defined boundaries is progressively refined under tissue growth in plants, such boundary shapes in animal tissues are regulated by cell fluidity, e.g., cell migration and intercalation, lacking in plant tissues. Here, we uncover that cell proliferation during vascular development produces anisotropic compressive stress, smoothing, and symmetrizing cell arrangement of the vascular-cell-type boundary. Mechanistically, the GATA transcription factor HANABA-TARANU cooperates with the type-B Arabidopsis response regulators to form an incoherent feedforward loop in cytokinin signaling. The incoherent feedforward loop fine-tunes the position and frequency of vascular cell proliferation, which in turn restricts the source of mechanical stress to the position distal and symmetric to the boundary. By combinatorial analyses of mechanical simulations and laser cell ablation, we show that the spatially constrained environment of vascular tissue efficiently entrains the stress orientation among the cells to produce a tissue-wide stress field. Together, our data indicate that the localized proliferation regulated by the cytokinin signaling circuit is decoded into a globally oriented mechanical stress to shape the vascular tissue symmetry, representing a reasonable mechanism controlling the boundary alignment and symmetry in tissue lacking cell fluidity.
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Affiliation(s)
- Motohiro Fujiwara
- Department of Biological Sciences, Graduate School of Science, Osaka University, Machikaneyama-cho, Toyonaka 560-0043, Japan
| | - Miyu Imamura
- Laboratory of Molecular and Functional Genomics, Graduate School of Bioagricultural Sciences, Nagoya University, Furocho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Katsuyoshi Matsushita
- Department of Biological Sciences, Graduate School of Science, Osaka University, Machikaneyama-cho, Toyonaka 560-0043, Japan
| | - Pawel Roszak
- Sainsbury Laboratory, University of Cambridge, 47 Bateman Street, Cambridge CB2 1LR, United Kingdom; Faculty of Biological and Environmental Sciences, University of Helsinki 00014, Helsinki, Finland
| | - Takafumi Yamashino
- Laboratory of Molecular and Functional Genomics, Graduate School of Bioagricultural Sciences, Nagoya University, Furocho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Yoichiroh Hosokawa
- Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Keiji Nakajima
- Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Koichi Fujimoto
- Department of Biological Sciences, Graduate School of Science, Osaka University, Machikaneyama-cho, Toyonaka 560-0043, Japan.
| | - Shunsuke Miyashima
- Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan.
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11
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Carrère A, d'Alessandro J, Cochet-Escartin O, Hesnard J, Ghazi N, Rivière C, Anjard C, Detcheverry F, Rieu JP. Microphase separation of living cells. Nat Commun 2023; 14:796. [PMID: 36781863 PMCID: PMC9925768 DOI: 10.1038/s41467-023-36395-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 01/30/2023] [Indexed: 02/15/2023] Open
Abstract
Self-organization of cells is central to a variety of biological systems and physical concepts of condensed matter have proven instrumental in deciphering some of their properties. Here we show that microphase separation, long studied in polymeric materials and other inert systems, has a natural counterpart in living cells. When placed below a millimetric film of liquid nutritive medium, a quasi two-dimensional, high-density population of Dictyostelium discoideum cells spontaneously assembles into compact domains. Their typical size of 100 μm is governed by a balance between competing interactions: an adhesion acting as a short-range attraction and promoting aggregation, and an effective long-range repulsion stemming from aerotaxis in near anoxic condition. Experimental data, a simple model and cell-based simulations all support this scenario. Our findings establish a generic mechanism for self-organization of living cells and highlight oxygen regulation as an emergent organizing principle for biological matter.
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Affiliation(s)
- A Carrère
- University of Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne, France
| | - J d'Alessandro
- University of Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne, France
| | - O Cochet-Escartin
- University of Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne, France
| | - J Hesnard
- University of Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne, France
| | - N Ghazi
- University of Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne, France
| | - C Rivière
- University of Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne, France
| | - C Anjard
- University of Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne, France
| | - F Detcheverry
- University of Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne, France.
| | - J-P Rieu
- University of Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne, France.
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12
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Yoon J, Sun J, Lee M, Hwang YS, Daar IO. Wnt4 and ephrinB2 instruct apical constriction via Dishevelled and non-canonical signaling. Nat Commun 2023; 14:337. [PMID: 36670115 PMCID: PMC9860048 DOI: 10.1038/s41467-023-35991-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 01/11/2023] [Indexed: 01/22/2023] Open
Abstract
Apical constriction is a cell shape change critical to vertebrate neural tube closure, and the contractile force required for this process is generated by actin-myosin networks. The signaling cue that instructs this process has remained elusive. Here, we identify Wnt4 and the transmembrane ephrinB2 protein as playing an instructive role in neural tube closure as members of a signaling complex we termed WERDS (Wnt4, EphrinB2, Ror2, Dishevelled (Dsh2), and Shroom3). Disruption of function or interaction among members of the WERDS complex results in defects of apical constriction and neural tube closure. The mechanism of action involves an interaction of ephrinB2 with the Dsh2 scaffold protein that enhances the formation of the WERDS complex, which in turn, activates Rho-associated kinase to induce apical constriction. Moreover, the ephrinB2/Dsh2 interaction promotes non-canonical Wnt signaling and shows how cross-talk between two major signal transduction pathways, Eph/ephrin and Wnt, coordinate morphogenesis of the neural tube.
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Affiliation(s)
- Jaeho Yoon
- Cancer & Developmental Biology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, 21702, USA.
| | - Jian Sun
- Cancer & Developmental Biology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, 21702, USA
| | - Moonsup Lee
- Cancer & Developmental Biology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, 21702, USA
| | - Yoo-Seok Hwang
- Cancer & Developmental Biology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, 21702, USA
| | - Ira O Daar
- Cancer & Developmental Biology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, 21702, USA.
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13
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Pajic-Lijakovic I, Eftimie R, Milivojevic M, Bordas SPA. The dynamics along the biointerface between the epithelial and cancer mesenchymal cells: Modeling consideration. Semin Cell Dev Biol 2023; 147:47-57. [PMID: 36631334 DOI: 10.1016/j.semcdb.2022.12.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 12/28/2022] [Indexed: 01/11/2023]
Abstract
Epithelial cancer is the one of most lethal cancer type worldwide. Targeting the early stage of disease would allow dramatic improvements in the survival of cancer patients. The early stage of the disease is related to cancer cell spreading across surrounding healthy epithelium. Consequently, deeper insight into cell dynamics along the biointerface between epithelial and cancer (mesenchymal) cells is necessary in order to control the disease as soon as possible. Cell dynamics along this epithelial-cancer biointerface is the result of the interplay between various biological and physical mechanisms. Despite extensive research devoted to study cancer cell spreading across the epithelium, we still do not understand the physical mechanisms which influences the dynamics along the biointerface. These physical mechanisms are related to the interplay between physical parameters such as: (1) interfacial tension between cancer and epithelial subpopulations, (2) established interfacial tension gradients, (3) the bending rigidity of the biointerface and its impact on the interfacial tension, (4) surface tension of the subpopulations, (5) viscoelasticity caused by collective cell migration, and (6) cell residual stress accumulation. The main goal of this study is to review some of these physical parameters in the context of the epithelial/cancer biointerface elaborated on the model system such as the biointerface between breast epithelial MCF-10A cells and cancer MDA-MB-231 cells and then to incorporate these parameters into a new biophysical model that could describe the dynamics of the biointerface. We conclude by discussing three biophysical scenarios for cell dynamics along the biointerface, which can occur depending on the magnitude of the generated shear stress: a smooth biointerface, a slightly-perturbed biointerface and an intensively-perturbed biointerface in the context of the Kelvin-Helmholtz instability. These scenarios are related to the probability of cancer invasion.
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Affiliation(s)
- Ivana Pajic-Lijakovic
- University of Belgrade, Faculty of Technology and Metallurgy, Department of Chemical Engineering, Serbia.
| | - Raluca Eftimie
- Laboratoire Mathematiques de Besançon, UMR-CNRS 6623, Université de Bourgogne Franche-Comte, 16 Route de Gray, Besançon 25000, France
| | - Milan Milivojevic
- University of Belgrade, Faculty of Technology and Metallurgy, Department of Chemical Engineering, Serbia
| | - Stéphane P A Bordas
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan; Institute for Computational Engineering, Faculty of Science, Technology and Communication, University of Luxembourg, Esch-sur-Alzette, Luxembourg
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14
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Lawson-Keister E, Manning ML. Collective chemotaxis in a Voronoi model for confluent clusters. Biophys J 2022; 121:4624-4634. [PMID: 36299235 PMCID: PMC9748360 DOI: 10.1016/j.bpj.2022.10.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 06/23/2022] [Accepted: 10/19/2022] [Indexed: 12/13/2022] Open
Abstract
Collective chemotaxis, where single cells cannot climb a biochemical signaling gradient but clusters of cells can, has been observed in different biological contexts, including confluent tissues where there are no gaps or overlaps between cells. Although particle-based models have been developed that predict important features of collective chemotaxis, the mechanisms in those models depend on particle overlaps, and so it remains unclear if they can explain behavior in confluent systems. Here, we develop an open-source code that couples a two-dimensional Voronoi simulation for confluent cell mechanics to a dynamic chemical signal that can diffuse, advect, and/or degrade and use the code to study potential mechanisms for collective chemotaxis in cellular monolayers. We first study the impact of advection on collective chemotaxis and delineate a regime where advective terms are important. Next, we investigate two possible chemotactic mechanisms, contact inhibition of locomotion and heterotypic interfacial tension, and demonstrate that both can drive collective chemotaxis in certain parameter regimes. We further demonstrate that the scaling behavior of cluster motion is well captured by simple analytic theories.
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Affiliation(s)
- E Lawson-Keister
- Department of Physics and BioInspired Syracuse, Syracuse University, Syracuse, New York
| | - M L Manning
- Department of Physics and BioInspired Syracuse, Syracuse University, Syracuse, New York.
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15
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Takeichi M. Cell sorting in vitro and in vivo: How are cadherins involved? Semin Cell Dev Biol 2022; 147:2-11. [PMID: 36376196 DOI: 10.1016/j.semcdb.2022.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/07/2022] [Accepted: 11/07/2022] [Indexed: 11/13/2022]
Abstract
Animal tissues are composed of heterogenous cells, and their sorting into different compartments of the tissue is a pivotal process for organogenesis. Cells accomplish sorting by themselves-it is well known that singly dispersed cells can self-organize into tissue-like structures in vitro. Cell sorting is regulated by both biochemical and physical mechanisms. Adhesive proteins connect cells together, selecting particular partners through their specific binding properties, while physical forces, such as cell-cortical tension, control the cohesiveness between cells and in turn cell assembly patterns in mechanical ways. These processes cooperate in determining the overall cell sorting behavior. This article focuses on the 'cadherin' family of adhesion molecules as a biochemical component of cell-cell interactions, addressing how they regulate cell sorting by themselves or by cooperating with other factors. New ideas beyond the classical models of cell sorting are also discussed.
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16
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Lucia SE, Jeong H, Shin JH. Cell segregation via differential collision modes between heterotypic cell populations. Mol Biol Cell 2022; 33:ar129. [PMID: 36129759 PMCID: PMC9634969 DOI: 10.1091/mbc.e22-03-0097] [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] [Indexed: 01/18/2023] Open
Abstract
In tissue development and regeneration, the establishment of sharp boundaries between heterotypic cells is essential for the differentiation of tissue functions. During the dynamic rearrangements of constituent cells that result from cell division and collective migration, the segregation boundary encounters various challenges. Several studies have suggested that cortical actomyosin structures play a crucial role in the maintenance of the boundary interface of segregated cell populations, implicating actin-mediated stresses. Examining physical cellular properties such as motility, traction, and intercellular stress, we investigated the formation and maintenance of the stable segregation between epithelial and mesenchymal cell populations devoid of heterotypic adhesions. At the contact boundary, the homotypic adhesion-mediated epithelial aggregates exerted collision-mediated compression against the surrounding mesenchymal cells. Our results demonstrated that heterotypic cell populations established a robust interfacial boundary by accumulating stress from active collisions and repulsions between two dissimilar cell types. Furthermore, the moment of the heterotypic collisions was identified by the existence of a sharp rise in maximum shear stress within the cell cluster.
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Affiliation(s)
- Stephani Edwina Lucia
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Seoul 34141, Republic of Korea
| | - Hyuntae Jeong
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Seoul 34141, Republic of Korea
| | - Jennifer H. Shin
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Seoul 34141, Republic of Korea,*Address correspondence to: Jennifer H. Shin ()
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17
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Sharrock TE, Evans J, Blanchard GB, Sanson B. Different temporal requirements for tartan and wingless in the formation of contractile interfaces at compartmental boundaries. Development 2022; 149:dev200292. [PMID: 36178136 PMCID: PMC9687003 DOI: 10.1242/dev.200292] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 09/12/2022] [Indexed: 10/21/2023]
Abstract
Compartmental boundaries physically separate developing tissues into distinct regions, which is fundamental for the organisation of the body plan in both insects and vertebrates. In many examples, this physical segregation is caused by a regulated increase in contractility of the actomyosin cortex at boundary cell-cell interfaces, a property important in developmental morphogenesis beyond compartmental boundary formation. We performed an unbiased screening approach to identify cell surface receptors required for actomyosin enrichment and polarisation at parasegmental boundaries (PSBs) in early Drosophila embryos, from the start of germband extension at gastrulation and throughout the germband extended stages (stages 6 to 11). First, we find that Tartan is required during germband extension for actomyosin enrichment at PSBs, confirming an earlier report. Next, by following in real time the dynamics of loss of boundary straightness in tartan mutant embryos compared with wild-type and ftz mutant embryos, we show that Tartan is required during germband extension but not beyond. We identify candidate genes that could take over from Tartan at PSBs and confirm that at germband extended stages, actomyosin enrichment at PSBs requires Wingless signalling.
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Affiliation(s)
- Thomas E. Sharrock
- Departmentof Physiology, Development and Neuroscience, University of Cambridge, Anatomy Building, Cambridge CB2 3DY, UK
| | - Jenny Evans
- Departmentof Physiology, Development and Neuroscience, University of Cambridge, Anatomy Building, Cambridge CB2 3DY, UK
| | - Guy B. Blanchard
- Departmentof Physiology, Development and Neuroscience, University of Cambridge, Anatomy Building, Cambridge CB2 3DY, UK
| | - Bénédicte Sanson
- Departmentof Physiology, Development and Neuroscience, University of Cambridge, Anatomy Building, Cambridge CB2 3DY, UK
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18
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Abstract
Since the proposal of the differential adhesion hypothesis, scientists have been fascinated by how cell adhesion mediates cellular self-organization to form spatial patterns during development. The search for molecular tool kits with homophilic binding specificity resulted in a diverse repertoire of adhesion molecules. Recent understanding of the dominant role of cortical tension over adhesion binding redirects the focus of differential adhesion studies to the signaling function of adhesion proteins to regulate actomyosin contractility. The broader framework of differential interfacial tension encompasses both adhesion and nonadhesion molecules, sharing the common function of modulating interfacial tension during cell sorting to generate diverse tissue patterns. Robust adhesion-based patterning requires close coordination between morphogen signaling, cell fate decisions, and changes in adhesion. Current advances in bridging theoretical and experimental approaches present exciting opportunities to understand molecular, cellular, and tissue dynamics during adhesion-based tissue patterning across multiple time and length scales.
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Affiliation(s)
- Tony Y-C Tsai
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, Missouri, USA;
| | - Rikki M Garner
- Department of Systems Biology, Harvard Medical School, Boston, Massachusetts, USA;
| | - Sean G Megason
- Department of Systems Biology, Harvard Medical School, Boston, Massachusetts, USA;
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19
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Franke F, Aland S, Böhme HJ, Voss-Böhme A, Lange S. Is cell segregation like oil and water: Asymptotic versus transitory regime. PLoS Comput Biol 2022; 18:e1010460. [PMID: 36121837 PMCID: PMC9484667 DOI: 10.1371/journal.pcbi.1010460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 08/01/2022] [Indexed: 11/30/2022] Open
Abstract
Understanding the segregation of cells is crucial to answer questions about tissue formation in embryos or tumor progression. Steinberg proposed that separation of cells can be compared to the separation of two liquids. Such a separation is well described by the Cahn-Hilliard (CH) equations and the segregation indices exhibit an algebraic decay with exponent 1/3 with respect to time. Similar exponents are also observed in cell-based models. However, the scaling behavior in these numerical models is usually only examined in the asymptotic regime and these models have not been directly applied to actual cell segregation data. In contrast, experimental data also reveals other scaling exponents and even slow logarithmic scaling laws. These discrepancies are commonly attributed to the effects of collective motion or velocity-dependent interactions. By calibrating a 2D cellular automaton (CA) model which efficiently implements a dynamic variant of the differential adhesion hypothesis to 2D experimental data from Méhes et al., we reproduce the biological cell segregation experiments with just adhesive forces. The segregation in the cellular automaton model follows a logarithmic scaling initially, which is in contrast to the proposed algebraic scaling with exponent 1/3. However, within the less than two orders of magnitudes in time which are observable in the experiments, a logarithmic scaling may appear as a pseudo-algebraic scaling. In particular, we demonstrate that the cellular automaton model can exhibit a range of exponents ≤1/3 for such a pseudo-algebraic scaling. Moreover, the time span of the experiment falls into the transitory regime of the cellular automaton rather than the asymptotic one. We additionally develop a method for the calibration of the 2D Cahn-Hilliard model and find a match with experimental data within the transitory regime of the Cahn-Hilliard model with exponent 1/4. On the one hand this demonstrates that the transitory behavior is relevant for the experiment rather than the asymptotic one. On the other hand this corroborates the ambiguity of the scaling behavior, when segregation processes can be only observed on short time spans. Segregation of different cell types is a crucial process for the pattern formation in tissues, in particular during embryogenesis. Since the involved cell interactions are complex and difficult to measure individually in experiments, mathematical modelling plays an increasingly important role to unravel the mechanisms governing segregation. The analysis of these theoretical models focuses mainly on the asymptotic behavior at large times, in a steady regime and for large numbers of cells. Most famously, cell-segregation models based on the minimization of the total surface energy, a mechanism also driving the demixing of immiscible fluids, are known to exhibit asymptotically a particular algebraic scaling behavior. However, it is not clear, whether the asymptotic regime of the numerical models is relevant at the spatio-temporal scales of actual biological processes and in-vitro experiments. By developing a mapping between 2D cell-based models and experimental settings, we are able to directly compare previous experimental data to numerical simulations of cell segregation quantitatively. We demonstrate that the experiments are reproduced by the transitory regime of the models rather than the asymptotic one. Our work puts a new perspective on previous model-driven conclusions on cell segregation mechanisms.
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Affiliation(s)
- Florian Franke
- DataMedAssist, HTW Dresden, Dresden, Germany
- Faculty of Informatics/Mathematics, HTW Dresden - University of Applied Sciences, Dresden, Germany
- * E-mail:
| | - Sebastian Aland
- Faculty of Informatics/Mathematics, HTW Dresden - University of Applied Sciences, Dresden, Germany
- Faculty of Mathematics and Computer Science, TU Freiberg, Freiberg, Germany
| | - Hans-Joachim Böhme
- DataMedAssist, HTW Dresden, Dresden, Germany
- Faculty of Informatics/Mathematics, HTW Dresden - University of Applied Sciences, Dresden, Germany
| | - Anja Voss-Böhme
- DataMedAssist, HTW Dresden, Dresden, Germany
- Faculty of Informatics/Mathematics, HTW Dresden - University of Applied Sciences, Dresden, Germany
| | - Steffen Lange
- DataMedAssist, HTW Dresden, Dresden, Germany
- Faculty of Informatics/Mathematics, HTW Dresden - University of Applied Sciences, Dresden, Germany
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20
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Bao M, Cornwall-Scoones J, Sanchez-Vasquez E, Cox AL, Chen DY, De Jonghe J, Shadkhoo S, Hollfelder F, Thomson M, Glover DM, Zernicka-Goetz M. Stem cell-derived synthetic embryos self-assemble by exploiting cadherin codes and cortical tension. Nat Cell Biol 2022; 24:1341-1349. [PMID: 36100738 PMCID: PMC9481465 DOI: 10.1038/s41556-022-00984-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 07/20/2022] [Indexed: 12/21/2022]
Abstract
Mammalian embryos sequentially differentiate into trophectoderm and an inner cell mass, the latter of which differentiates into primitive endoderm and epiblast. Trophoblast stem (TS), extraembryonic endoderm (XEN) and embryonic stem (ES) cells derived from these three lineages can self-assemble into synthetic embryos, but the mechanisms remain unknown. Here, we show that a stem cell-specific cadherin code drives synthetic embryogenesis. The XEN cell cadherin code enables XEN cell sorting into a layer below ES cells, recapitulating the sorting of epiblast and primitive endoderm before implantation. The TS cell cadherin code enables TS cell sorting above ES cells, resembling extraembryonic ectoderm clustering above epiblast following implantation. Whereas differential cadherin expression drives initial cell sorting, cortical tension consolidates tissue organization. By optimizing cadherin code expression in different stem cell lines, we tripled the frequency of correctly formed synthetic embryos. Thus, by exploiting cadherin codes from different stages of development, lineage-specific stem cells bypass the preimplantation structure to directly assemble a postimplantation embryo.
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Affiliation(s)
- Min Bao
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
- Mammalian Embryo and Stem Cell Group, Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, UK
| | - Jake Cornwall-Scoones
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
- The Francis Crick Institute, London, UK
| | - Estefania Sanchez-Vasquez
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Andy L Cox
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Dong-Yuan Chen
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Joachim De Jonghe
- The Francis Crick Institute, London, UK
- Department of Biochemistry, University of Cambridge, Cambridge, UK
| | - Shahriar Shadkhoo
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | | | - Matt Thomson
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - David M Glover
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Magdalena Zernicka-Goetz
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA.
- Mammalian Embryo and Stem Cell Group, Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, UK.
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21
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Barua D, Winklbauer R. Eph/ephrin signaling controls cell contacts and formation of a structurally asymmetrical tissue boundary in the Xenopus gastrula. Dev Biol 2022; 490:73-85. [PMID: 35868403 DOI: 10.1016/j.ydbio.2022.07.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 07/05/2022] [Accepted: 07/14/2022] [Indexed: 11/29/2022]
Abstract
In the primitive vertebrate gastrula, the boundary between ectoderm and mesoderm is formed by Brachet's cleft. Here we examine Brachet's cleft and its control by Eph/ephrin signaling in Xenopus at the ultrastructural level and by visualizing cortical F-actin. We infer cortical tension ratios at tissue surfaces and their interface in normal gastrulae and after depletion of receptors EphB4 and EphA4 and ligands ephrinB2 and ephrinB3. We find that cortical tension downregulation at cell contacts, a normal process in adhesion, is asymmetrically blocked in the ectoderm by Eph/ephrin signals from the mesoderm. This generates high interfacial tension that can prevent cell mixing across the boundary. Moreover, it determines an asymmetric boundary structure that is suited for the respective roles of ectoderm and mesoderm, as substratum and as migratory layers. The Eph and ephrin isoforms also control different cell-cell contact types in ectoderm and mesoderm. Respective changes of adhesion upon isoform depletion affect adhesion at the boundary to different degrees but usually do not prohibit cleft formation. In an extreme case, a new type of cleft-like boundary is even generated where cortical tension is symmetrically increased on both sides of the boundary.
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Affiliation(s)
- Debanjan Barua
- Department of Cell and Systems Biology, University of Toronto, Toronto, ON, M5S 3G5, Canada
| | - Rudolf Winklbauer
- Department of Cell and Systems Biology, University of Toronto, Toronto, ON, M5S 3G5, Canada.
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22
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Bush JO. Cellular and molecular mechanisms of EPH/EPHRIN signaling in evolution and development. Curr Top Dev Biol 2022; 149:153-201. [PMID: 35606056 DOI: 10.1016/bs.ctdb.2022.02.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The EPH receptor tyrosine kinases and their signaling partners, the EPHRINS, comprise a large class of cell signaling molecules that plays diverse roles in development. As cell membrane-anchored signaling molecules, they regulate cellular organization by modulating the strength of cellular contacts, usually by impacting the actin cytoskeleton or cell adhesion programs. Through these cellular functions, EPH/EPHRIN signaling often regulates tissue shape. Indeed, recent evidence indicates that this signaling family is ancient and associated with the origin of multicellularity. Though extensively studied, our understanding of the signaling mechanisms employed by this large family of signaling proteins remains patchwork, and a truly "canonical" EPH/EPHRIN signal transduction pathway is not known and may not exist. Instead, several foundational evolutionarily conserved mechanisms are overlaid by a myriad of tissue -specific functions, though common themes emerge from these as well. Here, I review recent advances and the related contexts that have provided new understanding of the conserved and varied molecular and cellular mechanisms employed by EPH/EPHRIN signaling during development.
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Affiliation(s)
- Jeffrey O Bush
- Department of Cell and Tissue Biology, University of California San Francisco, San Francisco, CA, United States; Program in Craniofacial Biology, University of California San Francisco, San Francisco, CA, United States; Institute for Human Genetics, University of California San Francisco, San Francisco, CA, United States; Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California San Francisco, San Francisco, CA, United States.
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23
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Huang Y, Winklbauer R. Cell cortex regulation by the planar cell polarity protein Prickle1. J Biophys Biochem Cytol 2022; 221:213195. [PMID: 35512799 PMCID: PMC9082893 DOI: 10.1083/jcb.202008116] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 01/18/2022] [Accepted: 04/09/2022] [Indexed: 01/07/2023] Open
Abstract
The planar cell polarity pathway regulates cell polarity, adhesion, and rearrangement. Its cytoplasmic core components Prickle (Pk) and Dishevelled (Dvl) often localize as dense puncta at cell membranes to form antagonizing complexes and establish cell asymmetry. In vertebrates, Pk and Dvl have been implicated in actomyosin cortex regulation, but the mechanism of how these proteins control cell mechanics is unclear. Here we demonstrate that in Xenopus prechordal mesoderm cells, diffusely distributed, cytoplasmic Pk1 up-regulates the F-actin content of the cortex. This counteracts cortex down-regulation by Dvl2. Both factors act upstream of casein kinase II to increase or decrease cortical tension. Thus, cortex modulation by Pk1 and Dvl2 is translated into mechanical force and affects cell migration and rearrangement during radial intercalation in the prechordal mesoderm. Pk1 also forms puncta and plaques, which are associated with localized depletion of cortical F-actin, suggesting opposite roles for diffuse and punctate Pk1.
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Affiliation(s)
- Yunyun Huang
- Department of Cell and Systems Biology, University of Toronto, Toronto, Ontario, Canada
| | - Rudolf Winklbauer
- Department of Cell and Systems Biology, University of Toronto, Toronto, Ontario, Canada,Correspondence to Rudolf Winklbauer:
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24
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Iber D, Mederacke M. Tracheal Ring Formation. Front Cell Dev Biol 2022; 10:900447. [PMID: 35573681 PMCID: PMC9094403 DOI: 10.3389/fcell.2022.900447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Accepted: 04/05/2022] [Indexed: 12/02/2022] Open
Abstract
The trachea is a long tube that enables air passage between the larynx and the bronchi. C-shaped cartilage rings on the ventral side stabilise the structure. On its esophagus-facing dorsal side, deformable smooth muscle facilitates the passage of food in the esophagus. While the symmetry break along the dorsal-ventral axis is well understood, the molecular mechanism that results in the periodic Sox9 expression pattern that translates into the cartilage rings has remained elusive. Here, we review the molecular regulatory interactions that have been elucidated, and discuss possible patterning mechanisms. Understanding the principles of self-organisation is important, both to define biomedical interventions and to enable tissue engineering.
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Affiliation(s)
- Dagmar Iber
- Department of Biosystems Science and Engineering, ETH Zurich, Basel, Switzerland
- Swiss Institute of Bioinformatics, Basel, Switzerland
- *Correspondence: Dagmar Iber,
| | - Malte Mederacke
- Department of Biosystems Science and Engineering, ETH Zurich, Basel, Switzerland
- Swiss Institute of Bioinformatics, Basel, Switzerland
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25
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Shook DR, Wen JWH, Rolo A, O'Hanlon M, Francica B, Dobbins D, Skoglund P, DeSimone DW, Winklbauer R, Keller RE. Characterization of convergent thickening, a major convergence force producing morphogenic movement in amphibians. eLife 2022; 11:e57642. [PMID: 35404236 PMCID: PMC9064293 DOI: 10.7554/elife.57642] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 04/10/2022] [Indexed: 01/09/2023] Open
Abstract
The morphogenic process of convergent thickening (CT) was originally described as the mediolateral convergence and radial thickening of the explanted ventral involuting marginal zone (IMZ) of Xenopus gastrulae (Keller and Danilchik, 1988). Here, we show that CT is expressed in all sectors of the pre-involution IMZ, which transitions to expressing convergent extension (CE) after involution. CT occurs without CE and drives symmetric blastopore closure in ventralized embryos. Assays of tissue affinity and tissue surface tension measurements suggest CT is driven by increased interfacial tension between the deep IMZ and the overlying epithelium. The resulting minimization of deep IMZ surface area drives a tendency to shorten the mediolateral (circumblastoporal) aspect of the IMZ, thereby generating tensile force contributing to blastopore closure (Shook et al., 2018). These results establish CT as an independent force-generating process of evolutionary significance and provide the first clear example of an oriented, tensile force generated by an isotropic, Holtfreterian/Steinbergian tissue affinity change.
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Affiliation(s)
- David R Shook
- Department of Biology, University of VirginiaCharlottesvilleUnited States
- Department of Cell Biology, University of Virginia, School of MedicineCharlottesvilleUnited States
| | - Jason WH Wen
- Department of Cell and Systems Biology, University of TorontoTorontoCanada
| | - Ana Rolo
- Centre for Craniofacial and Regenerative Biology, King's College LondonLondonUnited Kingdom
| | - Michael O'Hanlon
- Department of Cell Biology, University of Virginia, School of MedicineCharlottesvilleUnited States
| | | | | | - Paul Skoglund
- Department of Biology, University of VirginiaCharlottesvilleUnited States
| | - Douglas W DeSimone
- Department of Cell Biology, University of Virginia, School of MedicineCharlottesvilleUnited States
| | - Rudolf Winklbauer
- Department of Cell and Systems Biology, University of TorontoTorontoCanada
| | - Ray E Keller
- Department of Biology, University of VirginiaCharlottesvilleUnited States
- Department of Cell Biology, University of Virginia, School of MedicineCharlottesvilleUnited States
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26
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Lewis AE, Kuwahara A, Franzosi J, Bush JO. Tracheal separation is driven by NKX2-1-mediated repression of Efnb2 and regulation of endodermal cell sorting. Cell Rep 2022; 38:110510. [PMID: 35294885 PMCID: PMC9033272 DOI: 10.1016/j.celrep.2022.110510] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 12/29/2021] [Accepted: 02/16/2022] [Indexed: 11/05/2022] Open
Abstract
The mechanisms coupling fate specification of distinct tissues to their physical separation remain to be understood. The trachea and esophagus differentiate from a single tube of definitive endoderm, requiring the transcription factors SOX2 and NKX2-1, but how the dorsoventral site of tissue separation is defined to allocate tracheal and esophageal cell types is unknown. Here, we show that the EPH/EPHRIN signaling gene Efnb2 regulates tracheoesophageal separation by controlling the dorsoventral allocation of tracheal-fated cells. Ventral loss of NKX2-1 results in disruption of separation and expansion of Efnb2 expression in the trachea independent of SOX2. Through chromatin immunoprecipitation and reporter assays, we find that NKX2-1 likely represses Efnb2 directly. Lineage tracing shows that loss of NKX2-1 results in misallocation of ventral foregut cells into the esophagus, while mosaicism for NKX2-1 generates ectopic NKX2-1/EPHRIN-B2 boundaries that organize ectopic tracheal separation. Together, these data demonstrate that NKX2-1 coordinates tracheal specification with tissue separation through the regulation of EPHRIN-B2 and tracheoesophageal cell sorting. Lewis et al. show that, in the development of the mammalian trachea and esophagus, cell fate specification is coupled with morphogenesis by NKX2-1-mediated repression of Efnb2. This establishes an EPH/EPHRIN boundary that drives cell allocation and physical separation of the trachea and esophagus.
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Affiliation(s)
- Ace E Lewis
- Department of Cell and Tissue Biology, University of California, San Francisco, San Francisco, CA 94143, USA; Program in Craniofacial Biology, University of California, San Francisco, 513 Parnassus Avenue, Box 0512, San Francisco, CA 94143, USA; Institute for Human Genetics, University of California, San Francisco, San Francisco, CA 94143, USA; Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Akela Kuwahara
- Department of Cell and Tissue Biology, University of California, San Francisco, San Francisco, CA 94143, USA; Program in Craniofacial Biology, University of California, San Francisco, 513 Parnassus Avenue, Box 0512, San Francisco, CA 94143, USA; Institute for Human Genetics, University of California, San Francisco, San Francisco, CA 94143, USA; Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA 94143, USA; Developmental and Stem Cell Biology Graduate Program, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Jacqueline Franzosi
- Department of Cell and Tissue Biology, University of California, San Francisco, San Francisco, CA 94143, USA; Program in Craniofacial Biology, University of California, San Francisco, 513 Parnassus Avenue, Box 0512, San Francisco, CA 94143, USA; Institute for Human Genetics, University of California, San Francisco, San Francisco, CA 94143, USA; Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Jeffrey O Bush
- Department of Cell and Tissue Biology, University of California, San Francisco, San Francisco, CA 94143, USA; Program in Craniofacial Biology, University of California, San Francisco, 513 Parnassus Avenue, Box 0512, San Francisco, CA 94143, USA; Institute for Human Genetics, University of California, San Francisco, San Francisco, CA 94143, USA; Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA 94143, USA.
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27
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Abstract
Embryonic cells grow in environments that provide a plethora of physical cues, including mechanical forces that shape the development of the entire embryo. Despite their prevalence, the role of these forces in embryonic development and their integration with chemical signals have been mostly neglected, and scrutiny in modern molecular embryology tilted, instead, towards the dissection of molecular pathways involved in cell fate determination and patterning. It is now possible to investigate how mechanical signals induce downstream genetic regulatory networks to regulate key developmental processes in the embryo. Here, we review the insights into mechanical control of early vertebrate development, including the role of forces in tissue patterning and embryonic axis formation. We also highlight recent in vitro approaches using individual embryonic stem cells and self-organizing multicellular models of human embryos, which have been instrumental in expanding our understanding of how mechanics tune cell fate and cellular rearrangements during human embryonic development.
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28
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Wilkinson DG. Interplay of Eph-Ephrin Signalling and Cadherin Function in Cell Segregation and Boundary Formation. Front Cell Dev Biol 2021; 9:784039. [PMID: 34869386 PMCID: PMC8633894 DOI: 10.3389/fcell.2021.784039] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 10/25/2021] [Indexed: 11/13/2022] Open
Abstract
The segregation of distinct cell populations to form sharp boundaries is crucial for stabilising tissue organisation, for example during hindbrain segmentation in craniofacial development. Two types of mechanisms have been found to underlie cell segregation: differential adhesion mediated by cadherins, and Eph receptor and ephrin signalling at the heterotypic interface which regulates cell adhesion, cortical tension and repulsion. An interplay occurs between these mechanisms since cadherins have been found to contribute to Eph-ephrin-mediated cell segregation. This may reflect that Eph receptor activation acts through multiple pathways to decrease cadherin-mediated adhesion which can drive cell segregation. However, Eph receptors mainly drive cell segregation through increased heterotypic tension or repulsion. Cadherins contribute to cell segregation by antagonising homotypic tension within each cell population. This suppression of homotypic tension increases the difference with heterotypic tension triggered by Eph receptor activation, and it is this differential tension that drives cell segregation and border sharpening.
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29
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Ai BQ, Guo RX. Large-scale demixing in a binary mixture of cells with rigidity disparity in biological tissues. Phys Rev E 2021; 104:064411. [PMID: 35030891 DOI: 10.1103/physreve.104.064411] [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: 07/18/2021] [Accepted: 12/15/2021] [Indexed: 06/14/2023]
Abstract
Physical demixing on large scales of embryonic cell populations is fundamental to metazoan development, but whether a rigidity disparity alone is sufficient to driving large-scale demixing in a binary mixture of cell tissues is still an open question. To answer this question, we study mixing and demixing in a binary mixture of rigidity disparity cell tissues without heterotypic interactions using the Voronoi-based cellular model. Under suitable system parameters, the solid-like cells in the mixture can aggregate into a large cluster and the large-scale demixing occurs, which addresses that a rigidity disparity alone is sufficient to drive large-scale demixing. Remarkably, there exists an optimal temperature or rigidity disparity at which the binary mixture can be separated to the maximum extent. The necessary condition for the separation of mixtures is that the two types of cells are solid-like and liquid-like, respectively. The observation of robust demixing on large scales suggests that the sorting of progenitor cells may occur very early in the development process before robust heterotypic interfacial tensions are established. Our findings are relevant to understanding the mechanisms that drive cell sorting in confluent tissues.
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Affiliation(s)
- Bao-Quan Ai
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, China and Guangdong-Hong Kong Joint Laboratory of Quantum Matter, South China Normal University, Guangzhou 510006, China
| | - Rui-Xue Guo
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, China and Guangdong-Hong Kong Joint Laboratory of Quantum Matter, South China Normal University, Guangzhou 510006, China
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30
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Sengupta T, Koonce NL, Vázquez-Martínez N, Moyle MW, Duncan LH, Emerson SE, Han X, Shao L, Wu Y, Santella A, Fan L, Bao Z, Mohler W, Shroff H, Colón-Ramos DA. Differential adhesion regulates neurite placement via a retrograde zippering mechanism. eLife 2021; 10:71171. [PMID: 34783657 PMCID: PMC8843091 DOI: 10.7554/elife.71171] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 11/15/2021] [Indexed: 11/13/2022] Open
Abstract
During development, neurites and synapses segregate into specific neighborhoods or layers within nerve bundles. The developmental programs guiding placement of neurites in specific layers, and hence their incorporation into specific circuits, are not well understood. We implement novel imaging methods and quantitative models to document the embryonic development of the C. elegans brain neuropil, and discover that differential adhesion mechanisms control precise placement of single neurites onto specific layers. Differential adhesion is orchestrated via developmentally-regulated expression of the IgCAM SYG-1, and its partner ligand SYG-2. Changes in SYG-1 expression across neuropil layers result in changes in adhesive forces, which sort SYG-2-expressing neurons. Sorting to layers occurs, not via outgrowth from the neurite tip, but via an alternate mechanism of retrograde zippering, involving interactions between neurite shafts. Our study indicates that biophysical principles from differential adhesion govern neurite placement and synaptic specificity in vivo in developing neuropil bundles.
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Affiliation(s)
- Titas Sengupta
- Yale University School of Medicine, New Haven, United States
| | - Noelle L Koonce
- Yale University School of Medicine, New Haven, United States
| | | | - Mark W Moyle
- Yale University School of Medicine, New Haven, United States
| | | | - Sarah E Emerson
- Yale University School of Medicine, New Haven, United States
| | - Xiaofei Han
- National Institutes of Health, Bethesda, United States
| | - Lin Shao
- Yale University School of Medicine, New Haven, United States
| | - Yicong Wu
- National Institutes of Health, Bethesda, United States
| | - Anthony Santella
- Developmental Biology Program, Molecular Cytology Core, Sloan-Kettering Institute, New York, United States
| | - Li Fan
- Helen and Robert Appel Alzheimer's Disease Institute, Weill Cornell Medicine, New York, United States
| | - Zhirong Bao
- Developmental Biology Program, Sloan-Kettering Institute, New York, United States
| | - William Mohler
- Department of Genetics and Developmental Biology, University of Connecticut Health Center, Farmington, United States
| | - Hari Shroff
- National Institutes of Health, Bethesda, United States
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31
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Rossbach P, Böhme HJ, Lange S, Voss-Böhme A. Model-Based Prediction of an Effective Adhesion Parameter Guiding Multi-Type Cell Segregation. ENTROPY (BASEL, SWITZERLAND) 2021; 23:1378. [PMID: 34828077 PMCID: PMC8624153 DOI: 10.3390/e23111378] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 10/08/2021] [Accepted: 10/14/2021] [Indexed: 11/16/2022]
Abstract
The process of cell-sorting is essential for development and maintenance of tissues. Mathematical modeling can provide the means to analyze the consequences of different hypotheses about the underlying mechanisms. With the Differential Adhesion Hypothesis, Steinberg proposed that cell-sorting is determined by quantitative differences in cell-type-specific intercellular adhesion strengths. An implementation of the Differential Adhesion Hypothesis is the Differential Migration Model by Voss-Böhme and Deutsch. There, an effective adhesion parameter was derived analytically for systems with two cell types, which predicts the asymptotic sorting pattern. However, the existence and form of such a parameter for more than two cell types is unclear. Here, we generalize analytically the concept of an effective adhesion parameter to three and more cell types and demonstrate its existence numerically for three cell types based on in silico time-series data that is produced by a cellular-automaton implementation of the Differential Migration Model. Additionally, we classify the segregation behavior using statistical learning methods and show that the estimated effective adhesion parameter for three cell types matches our analytical prediction. Finally, we demonstrate that the effective adhesion parameter can resolve a recent dispute about the impact of interfacial adhesion, cortical tension and heterotypic repulsion on cell segregation.
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Affiliation(s)
- Philipp Rossbach
- DataMedAssist, HTW Dresden, 01062 Dresden, Germany; (P.R.); (H.-J.B.); (S.L.)
- Faculty of Informatics/Mathematics, HTW Dresden—University of Applied Sciences, 01062 Dresden, Germany
| | - Hans-Joachim Böhme
- DataMedAssist, HTW Dresden, 01062 Dresden, Germany; (P.R.); (H.-J.B.); (S.L.)
- Faculty of Informatics/Mathematics, HTW Dresden—University of Applied Sciences, 01062 Dresden, Germany
| | - Steffen Lange
- DataMedAssist, HTW Dresden, 01062 Dresden, Germany; (P.R.); (H.-J.B.); (S.L.)
- Faculty of Informatics/Mathematics, HTW Dresden—University of Applied Sciences, 01062 Dresden, Germany
| | - Anja Voss-Böhme
- DataMedAssist, HTW Dresden, 01062 Dresden, Germany; (P.R.); (H.-J.B.); (S.L.)
- Faculty of Informatics/Mathematics, HTW Dresden—University of Applied Sciences, 01062 Dresden, Germany
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32
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Lawson-Keister E, Manning ML. Jamming and arrest of cell motion in biological tissues. Curr Opin Cell Biol 2021; 72:146-155. [PMID: 34461581 DOI: 10.1016/j.ceb.2021.07.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 07/07/2021] [Accepted: 07/28/2021] [Indexed: 12/29/2022]
Abstract
Collective cell motility is crucial to many biological processes including morphogenesis, wound healing, and cancer invasion. Recently, the biology and biophysics communities have begun to use the term 'cell jamming' to describe the collective arrest of cell motion in tissues. Although this term is widely used, the underlying mechanisms are varied. In this review, we highlight three independent mechanisms that can potentially drive arrest of cell motion - crowding, tension-driven rigidity, and reduction of fluctuations - and propose a framework that connects all three. Because multiple mechanisms may be operating simultaneously, this emphasizes that experiments should strive to identify which mechanism dominates in a given situation. We also discuss how specific cell-scale and molecular-scale biological processes, such as cell-cell and cell-substrate interactions, control aspects of these underlying physical mechanisms.
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Affiliation(s)
| | - M Lisa Manning
- Department of Physics and BioInspired Institute, Syracuse University, Syracuse, NY 13244, USA.
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33
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Abstract
During early development, the hindbrain is sub-divided into rhombomeres that underlie the organisation of neurons and adjacent craniofacial tissues. A gene regulatory network of signals and transcription factors establish and pattern segments with a distinct anteroposterior identity. Initially, the borders of segmental gene expression are imprecise, but then become sharply defined, and specialised boundary cells form. In this Review, we summarise key aspects of the conserved regulatory cascade that underlies the formation of hindbrain segments. We describe how the pattern is sharpened and stabilised through the dynamic regulation of cell identity, acting in parallel with cell segregation. Finally, we discuss evidence that boundary cells have roles in local patterning, and act as a site of neurogenesis within the hindbrain.
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Affiliation(s)
- Robb Krumlauf
- Stowers Institute for Medical Research, Kansas City, MO 64110, USA.,Dept of Anatomy and Cell Biology, Kansas University Medical School, Kansas City, KS 66160, USA
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34
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Narayanan R, Mendieta-Serrano MA, Saunders TE. The role of cellular active stresses in shaping the zebrafish body axis. Curr Opin Cell Biol 2021; 73:69-77. [PMID: 34303916 DOI: 10.1016/j.ceb.2021.06.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 06/07/2021] [Accepted: 06/11/2021] [Indexed: 02/06/2023]
Abstract
Tissue remodelling and organ shaping during morphogenesis are products of mechanical forces generated at the cellular level. These cell-scale forces can be coordinated across the tissue via information provided by biochemical and mechanical cues. Such coordination leads to the generation of complex tissue shape during morphogenesis. In this short review, we elaborate the role of cellular active stresses in vertebrate axis morphogenesis, primarily using examples from postgastrulation development of the zebrafish embryo.
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Affiliation(s)
- Rachna Narayanan
- Mechanobiology Institute, National University of Singapore, Singapore
| | | | - Timothy E Saunders
- Mechanobiology Institute, National University of Singapore, Singapore; Department of Biological Sciences, National University of Singapore, Singapore; Institute of Molecular and Cell Biology, A∗Star, Singapore; Warwick Medical School, University of Warwick, Coventry, United Kingdom.
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35
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Kindberg AA, Srivastava V, Muncie JM, Weaver VM, Gartner ZJ, Bush JO. EPH/EPHRIN regulates cellular organization by actomyosin contractility effects on cell contacts. J Cell Biol 2021; 220:e202005216. [PMID: 33798261 PMCID: PMC8025214 DOI: 10.1083/jcb.202005216] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 02/02/2021] [Accepted: 03/03/2021] [Indexed: 02/06/2023] Open
Abstract
EPH/EPHRIN signaling is essential to many aspects of tissue self-organization and morphogenesis, but little is known about how EPH/EPHRIN signaling regulates cell mechanics during these processes. Here, we use a series of approaches to examine how EPH/EPHRIN signaling drives cellular self-organization. Contact angle measurements reveal that EPH/EPHRIN signaling decreases the stability of heterotypic cell:cell contacts through increased cortical actomyosin contractility. We find that EPH/EPHRIN-driven cell segregation depends on actomyosin contractility but occurs independently of directed cell migration and without changes in cell adhesion. Atomic force microscopy and live cell imaging of myosin localization support that EPH/EPHRIN signaling results in increased cortical tension. Interestingly, actomyosin contractility also nonautonomously drives increased EPHB2:EPHB2 homotypic contacts. Finally, we demonstrate that changes in tissue organization are driven by minimization of heterotypic contacts through actomyosin contractility in cell aggregates and by mouse genetics experiments. These data elucidate the biomechanical mechanisms driving EPH/EPHRIN-based cell segregation wherein differences in interfacial tension, regulated by actomyosin contractility, govern cellular self-organization.
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Affiliation(s)
- Abigail A. Kindberg
- Program in Craniofacial Biology, University of California, San Francisco, San Francisco, CA
- Department of Cell and Tissue Biology, University of California, San Francisco, San Francisco, CA
- Institute for Human Genetics, University of California, San Francisco, San Francisco, CA
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA
- Biomedical Sciences Graduate Program, University of California, San Francisco, San Francisco, CA
| | - Vasudha Srivastava
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, CA
| | - Jonathon M. Muncie
- Center for Bioengineering and Tissue Regeneration, University of California, San Francisco, San Francisco, CA
- Department of Surgery, University of California, San Francisco, San Francisco, CA
- Helen Diller Family Cancer Research Center, University of California, San Francisco, San Francisco, CA
- Graduate Program in Bioengineering, University of California, San Francisco, and University of California, Berkeley, San Francisco, CA
| | - Valerie M. Weaver
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA
- Center for Bioengineering and Tissue Regeneration, University of California, San Francisco, San Francisco, CA
- Department of Surgery, University of California, San Francisco, San Francisco, CA
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA
- Department of Anatomy, University of California, San Francisco, San Francisco, CA
- Department of Radiation Oncology, University of California, San Francisco, San Francisco, CA
- UCSF Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA
- Helen Diller Family Cancer Research Center, University of California, San Francisco, San Francisco, CA
| | - Zev J. Gartner
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, CA
- Center for Cellular Construction, University of California, San Francisco, San Francisco, CA
- Chan Zuckerberg Biohub, San Francisco, CA
| | - Jeffrey O. Bush
- Program in Craniofacial Biology, University of California, San Francisco, San Francisco, CA
- Department of Cell and Tissue Biology, University of California, San Francisco, San Francisco, CA
- Institute for Human Genetics, University of California, San Francisco, San Francisco, CA
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA
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36
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McClatchey AI. EPHecting cell contact by increasing cortical tension. J Cell Biol 2021; 220:212115. [PMID: 33999116 PMCID: PMC8129807 DOI: 10.1083/jcb.202105015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
EPH/EPHRIN signaling is crucial to the segregation of cell populations during the morphogenesis of many tissues. In this issue, Kindberg et al. (2021. J. Cell Biol.https://doi.org/10.1083/jcb.202005216) show that EPH activation can drive both heterotypic cell repulsion and homotypic aggregation by triggering increased cortical tension.
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37
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Ectoderm to mesoderm transition by down-regulation of actomyosin contractility. PLoS Biol 2021; 19:e3001060. [PMID: 33406067 PMCID: PMC7815211 DOI: 10.1371/journal.pbio.3001060] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 01/19/2021] [Accepted: 12/29/2020] [Indexed: 12/15/2022] Open
Abstract
Collective migration of cohesive tissues is a fundamental process in morphogenesis and is particularly well illustrated during gastrulation by the rapid and massive internalization of the mesoderm, which contrasts with the much more modest movements of the ectoderm. In the Xenopus embryo, the differences in morphogenetic capabilities of ectoderm and mesoderm can be connected to the intrinsic motility of individual cells, very low for ectoderm, high for mesoderm. Surprisingly, we find that these seemingly deep differences can be accounted for simply by differences in Rho-kinases (Rock)-dependent actomyosin contractility. We show that Rock inhibition is sufficient to rapidly unleash motility in the ectoderm and confer it with mesoderm-like properties. In the mesoderm, this motility is dependent on two negative regulators of RhoA, the small GTPase Rnd1 and the RhoGAP Shirin/Dlc2/ArhGAP37. Both are absolutely essential for gastrulation. At the cellular and tissue level, the two regulators show overlapping yet distinct functions. They both contribute to decrease cortical tension and confer motility, but Shirin tends to increase tissue fluidity and stimulate dispersion, while Rnd1 tends to favor more compact collective migration. Thus, each is able to contribute to a specific property of the migratory behavior of the mesoderm. We propose that the "ectoderm to mesoderm transition" is a prototypic case of collective migration driven by a down-regulation of cellular tension, without the need for the complex changes traditionally associated with the epithelial-to-mesenchymal transition.
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38
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Boot RC, Koenderink GH, Boukany PE. Spheroid mechanics and implications for cell invasion. ADVANCES IN PHYSICS: X 2021. [DOI: 10.1080/23746149.2021.1978316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
- Ruben C. Boot
- Department of Chemical Engineering, Delft University of Technology, Delft, The Netherlands
| | - Gijsje H. Koenderink
- Department of Bionanoscience, Kavli Institute of Nanoscience Delft, Delft University of Technology, Delft, The Netherlands
| | - Pouyan E. Boukany
- Department of Chemical Engineering, Delft University of Technology, Delft, The Netherlands
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39
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Voss-Böhme A, Gerisch A. Multi-Scale Analysis of Contact-Dependent Interaction in Tissue Aggregation and Invasion. SYSTEMS MEDICINE 2021. [DOI: 10.1016/b978-0-12-801238-3.11449-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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40
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Fagotto F. Tissue segregation in the early vertebrate embryo. Semin Cell Dev Biol 2020; 107:130-146. [DOI: 10.1016/j.semcdb.2020.05.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 05/22/2020] [Accepted: 05/26/2020] [Indexed: 11/30/2022]
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41
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Arcas A, Wilkinson DG, Nieto MÁ. The Evolutionary History of Ephs and Ephrins: Toward Multicellular Organisms. Mol Biol Evol 2020; 37:379-394. [PMID: 31589243 PMCID: PMC6993872 DOI: 10.1093/molbev/msz222] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Eph receptor (Eph) and ephrin signaling regulate fundamental developmental processes through both forward and reverse signaling triggered upon cell–cell contact. In vertebrates, they are both classified into classes A and B, and some representatives have been identified in many metazoan groups, where their expression and functions have been well studied. We have extended previous phylogenetic analyses and examined the presence of Eph and ephrins in the tree of life to determine their origin and evolution. We have found that 1) premetazoan choanoflagellates may already have rudimental Eph/ephrin signaling as they have an Eph-/ephrin-like pair and homologs of downstream-signaling genes; 2) both forward- and reverse-downstream signaling might already occur in Porifera since sponges have most genes involved in these types of signaling; 3) the nonvertebrate metazoan Eph is a type-B receptor that can bind ephrins regardless of their membrane-anchoring structure, glycosylphosphatidylinositol, or transmembrane; 4) Eph/ephrin cross-class binding is specific to Gnathostomata; and 5) kinase-dead Eph receptors can be traced back to Gnathostomata. We conclude that Eph/ephrin signaling is of older origin than previously believed. We also examined the presence of protein domains associated with functional characteristics and the appearance and conservation of downstream-signaling pathways to understand the original and derived functions of Ephs and ephrins. We find that the evolutionary history of these gene families points to an ancestral function in cell–cell interactions that could contribute to the emergence of multicellularity and, in particular, to the required segregation of cell populations.
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Affiliation(s)
- Aida Arcas
- Instituto de Neurociencias (CSIC-UMH), Avda, San Juan de Alicante, Spain
| | - David G Wilkinson
- Neural Development Laboratory, The Francis Crick Institute, London, United Kingdom
| | - M Ángela Nieto
- Instituto de Neurociencias (CSIC-UMH), Avda, San Juan de Alicante, Spain
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42
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Shaker MR, Lee JH, Park SH, Kim JY, Son GH, Son JW, Park BH, Rhyu IJ, Kim H, Sun W. Anteroposterior Wnt-RA Gradient Defines Adhesion and Migration Properties of Neural Progenitors in Developing Spinal Cord. Stem Cell Reports 2020; 15:898-911. [PMID: 32976767 PMCID: PMC7562945 DOI: 10.1016/j.stemcr.2020.08.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 08/26/2020] [Accepted: 08/28/2020] [Indexed: 11/25/2022] Open
Abstract
Mammalian embryos exhibit a transition from head morphogenesis to trunk elongation to meet the demand of axial elongation. The caudal neural tube (NT) is formed with neural progenitors (NPCs) derived from neuromesodermal progenitors localized at the tail tip. However, the molecular and cellular basis of elongating NT morphogenesis is yet elusive. Here, we provide evidence that caudal NPCs exhibit strong adhesion affinity that is gradually decreased along the anteroposterior (AP) axis in mouse embryonic spinal cord and human cellular models. Strong cell-cell adhesion causes collective migration, allowing AP alignment of NPCs depending on their birthdate. We further validated that this axial adhesion gradient is associated with the extracellular matrix and is under the control of graded Wnt signaling emanating from tail buds and antagonistic retinoic acid (RA) signaling. These results suggest that progressive reduction of NPC adhesion along the AP axis is under the control of Wnt-RA molecular networks, which is essential for a proper elongation of the spinal cord.
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Affiliation(s)
- Mohammed R Shaker
- Department of Anatomy, Brain Korea 21 Plus Program, Korea University College of Medicine, Seoul, 02841, Korea; Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Ju-Hyun Lee
- Department of Anatomy, Brain Korea 21 Plus Program, Korea University College of Medicine, Seoul, 02841, Korea
| | - Si-Hyung Park
- Department of Anatomy, Brain Korea 21 Plus Program, Korea University College of Medicine, Seoul, 02841, Korea
| | - Joo Yeon Kim
- Department of Anatomy, Brain Korea 21 Plus Program, Korea University College of Medicine, Seoul, 02841, Korea
| | - Gi Hoon Son
- Department of Legal Medicine, College of Medicine, Korea University, Seoul 02841, Korea; Department of Biomedical Sciences, College of Medicine, Korea University, Seoul 02841, Korea
| | - Jong Wan Son
- Division of Quantum Phases and Devices, Department of Physics, Konkuk University, Seoul 05029, Korea
| | - Bae Ho Park
- Division of Quantum Phases and Devices, Department of Physics, Konkuk University, Seoul 05029, Korea
| | - Im Joo Rhyu
- Department of Anatomy, Brain Korea 21 Plus Program, Korea University College of Medicine, Seoul, 02841, Korea
| | - Hyun Kim
- Department of Anatomy, Brain Korea 21 Plus Program, Korea University College of Medicine, Seoul, 02841, Korea
| | - Woong Sun
- Department of Anatomy, Brain Korea 21 Plus Program, Korea University College of Medicine, Seoul, 02841, Korea.
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43
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Fagotto F. EpCAM as Modulator of Tissue Plasticity. Cells 2020; 9:E2128. [PMID: 32961790 PMCID: PMC7563481 DOI: 10.3390/cells9092128] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 08/24/2020] [Accepted: 09/14/2020] [Indexed: 01/01/2023] Open
Abstract
The Epithelial Cell Adhesion Molecule or EpCAM is a well-known marker highly expressed in carcinomas and showing a strong correlation with poor cancer prognosis. While its name relates to its proposed function as a cell adhesion molecule, EpCAM has been shown to have various signalling functions. In particular, it has been identified as an important positive regulator of cell adhesion and migration, playing an essential role in embryonic morphogenesis as well as intestinal homeostasis. This activity is not due to its putative adhesive function, but rather to its ability to repress myosin contractility by impinging on a PKC signalling cascade. This mechanism confers EpCAM the unique property of favouring tissue plasticity. I review here the currently available data, comment on possible connections with other properties of EpCAM, and discuss the potential significance in the context of cancer invasion.
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Affiliation(s)
- François Fagotto
- CRBM, University of Montpellier and CNRS, 34293 Montpellier, France
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44
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Sharrock TE, Sanson B. Cell sorting and morphogenesis in early Drosophila embryos. Semin Cell Dev Biol 2020; 107:147-160. [PMID: 32807642 DOI: 10.1016/j.semcdb.2020.07.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 07/13/2020] [Accepted: 07/14/2020] [Indexed: 12/25/2022]
Abstract
The regionalisation of growing tissues into compartments that do not mix is thought to be a common motif of animal development. Compartments and compartmental boundaries were discovered by lineage studies in the model organism Drosophila. Since then, many compartment boundaries have been identified in developing tissues, from insects to vertebrates. These are important for animal development, because boundaries localize signalling centres that control tissue morphogenesis. Compartment boundaries are boundaries of lineage restriction, where specific mechanisms keep boundaries straight and cells segregated. Here, we review the mechanisms of cell sorting at boundaries found in early Drosophila embryos. The parasegmental boundaries, separating anterior from posterior compartments in the embryo, keep cells segregated by increasing actomyosin contractility at boundary cell-cell interfaces. Differential actomyosin contractility in turn promotes fold formation and orients cell division. Earlier in development, actomyosin differentials are also important for cell sorting during axis extension. Specific cell surface asymmetries and signalling pathways are required to initiate and maintain these actomyosin differentials.
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Affiliation(s)
- Thomas E Sharrock
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, UK
| | - Bénédicte Sanson
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, UK.
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45
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46
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Kesavan G, Machate A, Hans S, Brand M. Cell-fate plasticity, adhesion and cell sorting complementarily establish a sharp midbrain-hindbrain boundary. Development 2020; 147:dev186882. [PMID: 32439756 DOI: 10.1242/dev.186882] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 04/30/2020] [Indexed: 01/22/2023]
Abstract
The formation and maintenance of sharp boundaries between groups of cells play a vital role during embryonic development as they serve to compartmentalize cells with similar fates. Some of these boundaries also act as organizers, with the ability to induce specific cell fates and morphogenesis in the surrounding cells. The midbrain-hindbrain boundary (MHB) is such an organizer: it acts as a lineage restriction boundary to prevent the intermingling of cells with different developmental fates. However, the mechanisms underlying the lineage restriction process remain unclear. Here, using novel fluorescent knock-in reporters, live imaging, Cre/lox-mediated lineage tracing, atomic force microscopy-based cell adhesion assays and mutant analysis, we analyze the process of lineage restriction at the MHB and provide mechanistic details. Specifically, we show that lineage restriction occurs by the end of gastrulation, and that the subsequent formation of sharp gene expression boundaries in the developing MHB occur through complementary mechanisms, i.e. cell-fate plasticity and cell sorting. Furthermore, we show that cell sorting at the MHB involves differential adhesion among midbrain and hindbrain cells that is mediated by N-cadherin and Eph-ephrin signaling.
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Affiliation(s)
- Gokul Kesavan
- Center for Regenerative Therapies TU Dresden (CRTD), Technische Universität Dresden, Fetscherstr. 105, 01307 Dresden, Germany
| | - Anja Machate
- Center for Regenerative Therapies TU Dresden (CRTD), Technische Universität Dresden, Fetscherstr. 105, 01307 Dresden, Germany
| | - Stefan Hans
- Center for Regenerative Therapies TU Dresden (CRTD), Technische Universität Dresden, Fetscherstr. 105, 01307 Dresden, Germany
| | - Michael Brand
- Center for Regenerative Therapies TU Dresden (CRTD), Technische Universität Dresden, Fetscherstr. 105, 01307 Dresden, Germany
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47
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Mueller M, Rasoulinejad S, Garg S, Wegner SV. The Importance of Cell-Cell Interaction Dynamics in Bottom-Up Tissue Engineering: Concepts of Colloidal Self-Assembly in the Fabrication of Multicellular Architectures. NANO LETTERS 2020; 20:2257-2263. [PMID: 31751141 PMCID: PMC7146848 DOI: 10.1021/acs.nanolett.9b04160] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 11/19/2019] [Indexed: 06/10/2023]
Abstract
Building tissue from cells as the basic building block based on principles of self-assembly is a challenging and promising approach. Understanding how far principles of self-assembly and self-sorting known for colloidal particles apply to cells remains unanswered. In this study, we demonstrate that not just controlling the cell-cell interactions but also their dynamics is a crucial factor that determines the formed multicellular structure, using photoswitchable interactions between cells that are activated with blue light and reverse in the dark. Tuning dynamics of the cell-cell interactions by pulsed light activation results in multicellular architectures with different sizes and shapes. When the interactions between cells are dynamic, compact and round multicellular clusters under thermodynamic control form, while otherwise branched and loose aggregates under kinetic control assemble. These structures parallel what is known for colloidal assemblies under reaction- and diffusion-limited cluster aggregation, respectively. Similarly, dynamic interactions between cells are essential for cells to self-sort into distinct groups. Using four different cell types, which expressed two orthogonal cell-cell interaction pairs, the cells sorted into two separate assemblies. Bringing concepts of colloidal self-assembly to bottom-up tissue engineering provides a new theoretical framework and will help in the design of more predictable tissue-like structures.
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Affiliation(s)
- Marc Mueller
- Max
Planck Institute for Polymer Research, 55128 Mainz, Germany
| | | | - Sukant Garg
- Max
Planck Institute for Polymer Research, 55128 Mainz, Germany
| | - Seraphine V. Wegner
- Max
Planck Institute for Polymer Research, 55128 Mainz, Germany
- Institute
of Physiological Chemistry and Pathobiochemistry, University of Münster, 48149 Münster, Germany
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48
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Sahu P, Sussman DM, Rübsam M, Mertz AF, Horsley V, Dufresne ER, Niessen CM, Marchetti MC, Manning ML, Schwarz JM. Small-scale demixing in confluent biological tissues. SOFT MATTER 2020; 16:3325-3337. [PMID: 32196025 DOI: 10.1039/c9sm01084j] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Surface tension governed by differential adhesion can drive fluid particle mixtures to sort into separate regions, i.e., demix. Does the same phenomenon occur in confluent biological tissues? We begin to answer this question for epithelial monolayers with a combination of theory via a vertex model and experiments on keratinocyte monolayers. Vertex models are distinct from particle models in that the interactions between the cells are shape-based, as opposed to distance-dependent. We investigate whether a disparity in cell shape or size alone is sufficient to drive demixing in bidisperse vertex model fluid mixtures. Surprisingly, we observe that both types of bidisperse systems robustly mix on large lengthscales. On the other hand, shape disparity generates slight demixing over a few cell diameters, a phenomenon we term micro-demixing. This result can be understood by examining the differential energy barriers for neighbor exchanges (T1 transitions). Experiments with mixtures of wild-type and E-cadherin-deficient keratinocytes on a substrate are consistent with the predicted phenomenon of micro-demixing, which biology may exploit to create subtle patterning. The robustness of mixing at large scales, however, suggests that despite some differences in cell shape and size, progenitor cells can readily mix throughout a developing tissue until acquiring means of recognizing cells of different types.
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Affiliation(s)
- Preeti Sahu
- Department of Physics and BioInspired Syracuse, Institute for Material and Living Systems, Syracuse University, Syracuse, NY 13244, USA.
| | - Daniel M Sussman
- Department of Physics and BioInspired Syracuse, Institute for Material and Living Systems, Syracuse University, Syracuse, NY 13244, USA. and Department of Physics, Emory University, Atlanta, GA 30322, USA
| | - Matthias Rübsam
- Department of Dermatology, CECAD Cologne, Center for Molecular Medicine, University of Cologne, Cologne, Germany
| | - Aaron F Mertz
- Department of Physics, Yale University, New Haven, CT 06520, USA
| | - Valerie Horsley
- Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT 06520, USA
| | - Eric R Dufresne
- Department of Physics, Yale University, New Haven, CT 06520, USA and Departments of Mechanical Engineering and Materials Science, Chemical and Environmental Engineering, and Cell Biology, Yale University, New Haven, CT 06520, USA and Department of Materials, ETH Zürich, 8093 Zürich, Switzerland
| | - Carien M Niessen
- Department of Dermatology, CECAD Cologne, Center for Molecular Medicine, University of Cologne, Cologne, Germany
| | - M Cristina Marchetti
- Department of Physics, University of California at Santa Barbara, Santa Barbara, CA 93106, USA
| | - M Lisa Manning
- Department of Physics and BioInspired Syracuse, Institute for Material and Living Systems, Syracuse University, Syracuse, NY 13244, USA.
| | - J M Schwarz
- Department of Physics and BioInspired Syracuse, Institute for Material and Living Systems, Syracuse University, Syracuse, NY 13244, USA. and Indian Creek Farm, Ithaca, NY 14850, USA
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49
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Hoffecker IT, Arima Y, Iwata H. Tuning intercellular adhesion with membrane-anchored oligonucleotides. J R Soc Interface 2019; 16:20190299. [PMID: 31662069 DOI: 10.1098/rsif.2019.0299] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Adhesive interactions between cells play an integral role in development, differentiation and regeneration. Existing methods for controlling cell-cell cohesion and adhesion by manipulating protein expression are constrained by biological interdependencies, e.g. coupling of cadherins to actomyosin force-feedback mechanisms. We use oligonucleotides conjugated to PEGylated lipid anchors (ssDNAPEGDPPE) to introduce artificial cell-cell adhesion that is largely decoupled from the internal cytoskeleton. We describe cell-cell doublets with a mechanical model based on isotropic, elastic deformation of spheres to estimate the adhesion at the cell-cell interface. Physical manipulation of adhesion by modulating the PEG-lipid to ssDNAPEGDPPE ratio, and conversely treating with actin-depolymerizing cytochalasin D, resulted in decreases and increases in doublet contact area, respectively. Our data are relevant to the ongoing discussion over mechanisms of tissue surface tension and in agreement with models based on opposing cortical and cohesive forces. PEG-lipid modulation of doublet geometries resulted in a well-defined curve indicating continuity, enabling prescriptive calibration for controlling doublet geometry. Our study demonstrates tuning of basic doublet adhesion, laying the foundation for more complex multicellular adhesion control independent of protein expression.
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Affiliation(s)
- Ian T Hoffecker
- Institute for Frontier Medical Sciences, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan.,Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Solna väg 9, Solna 171 65, Sweden
| | - Yusuke Arima
- Institute for Frontier Medical Sciences, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan.,Institute for Materials Chemistry and Engineering, Kyushu University CE41, 744 Motoka, Nishi-Ku, Fukuoka 819-0395, Japan
| | - Hiroo Iwata
- Institute for Frontier Medical Sciences, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan.,The Compass to Healthy Life Research Complex Program, RIKEN, Kobe, Japan
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50
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Cayuso J, Xu Q, Addison M, Wilkinson DG. Actomyosin regulation by Eph receptor signaling couples boundary cell formation to border sharpness. eLife 2019; 8:49696. [PMID: 31502954 PMCID: PMC6739871 DOI: 10.7554/elife.49696] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 08/23/2019] [Indexed: 02/06/2023] Open
Abstract
The segregation of cells with distinct regional identity underlies formation of a sharp border, which in some tissues serves to organise a boundary signaling centre. It is unclear whether or how border sharpness is coordinated with induction of boundary-specific gene expression. We show that forward signaling of EphA4 is required for border sharpening and induction of boundary cells in the zebrafish hindbrain, which we find both require kinase-dependent signaling, with a lesser input of PDZ domain-dependent signaling. We find that boundary-specific gene expression is regulated by myosin II phosphorylation, which increases actomyosin contraction downstream of EphA4 signaling. Myosin phosphorylation leads to nuclear translocation of Taz, which together with Tead1a is required for boundary marker expression. Since actomyosin contraction maintains sharp borders, there is direct coupling of border sharpness to boundary cell induction that ensures correct organisation of signaling centres.
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Affiliation(s)
- Jordi Cayuso
- The Francis Crick Institute, London, United Kingdom
| | - Qiling Xu
- The Francis Crick Institute, London, United Kingdom
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