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Jia X, Lin L, Guo S, Zhou L, Jin G, Dong J, Xiao J, Xie X, Li Y, He S, Wei Z, Yu C. CLASP-mediated competitive binding in protein condensates directs microtubule growth. Nat Commun 2024; 15:6509. [PMID: 39095354 PMCID: PMC11297316 DOI: 10.1038/s41467-024-50863-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Accepted: 07/23/2024] [Indexed: 08/04/2024] Open
Abstract
Microtubule organization in cells relies on targeting mechanisms. Cytoplasmic linker proteins (CLIPs) and CLIP-associated proteins (CLASPs) are key regulators of microtubule organization, yet the underlying mechanisms remain elusive. Here, we reveal that the C-terminal domain of CLASP2 interacts with a common motif found in several CLASP-binding proteins. This interaction drives the dynamic localization of CLASP2 to distinct cellular compartments, where CLASP2 accumulates in protein condensates at the cell cortex or the microtubule plus end. These condensates physically contact each other via CLASP2-mediated competitive binding, determining cortical microtubule targeting. The phosphorylation of CLASP2 modulates the dynamics of the condensate-condensate interaction and spatiotemporally navigates microtubule growth. Moreover, we identify additional CLASP-interacting proteins that are involved in condensate contacts in a CLASP2-dependent manner, uncovering a general mechanism governing microtubule targeting. Our findings not only unveil a tunable multiphase system regulating microtubule organization, but also offer general mechanistic insights into intricate protein-protein interactions at the mesoscale level.
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Affiliation(s)
- Xuanyan Jia
- Shenzhen Key Laboratory of Biomolecular Assembling and Regulation, Shenzhen, Guangdong, 518055, China
- Brain Research Center, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
- School of Life Sciences, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Leishu Lin
- Shenzhen Key Laboratory of Biomolecular Assembling and Regulation, Shenzhen, Guangdong, 518055, China
- Brain Research Center, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
- School of Life Sciences, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Siqi Guo
- School of Life Sciences, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Lulu Zhou
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Gaowei Jin
- Brain Research Center, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
- School of Life Sciences, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Jiayuan Dong
- Shenzhen Key Laboratory of Biomolecular Assembling and Regulation, Shenzhen, Guangdong, 518055, China
- Brain Research Center, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
- School of Life Sciences, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Jinman Xiao
- Brain Research Center, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
- School of Life Sciences, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Xingqiao Xie
- Shenzhen Key Laboratory of Biomolecular Assembling and Regulation, Shenzhen, Guangdong, 518055, China
- Brain Research Center, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
- School of Life Sciences, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Yiming Li
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Sicong He
- School of Life Sciences, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Zhiyi Wei
- Shenzhen Key Laboratory of Biomolecular Assembling and Regulation, Shenzhen, Guangdong, 518055, China.
- Brain Research Center, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China.
- School of Life Sciences, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China.
- Institute for Biological Electron Microscopy, Southern University of Science and Technology, Shenzhen, Guangdong, China.
| | - Cong Yu
- School of Life Sciences, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China.
- Institute for Biological Electron Microscopy, Southern University of Science and Technology, Shenzhen, Guangdong, China.
- Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, and Shenzhen Key Laboratory of Cell Microenvironment, Shenzhen, Guangdong, 518055, China.
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2
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Isomursu A, Alanko J, Hernández-Pérez S, Saukkonen K, Saari M, Mattila PK, Ivaska J. Dynamic Micropatterning Reveals Substrate-Dependent Differences in the Geometric Control of Cell Polarization and Migration. SMALL METHODS 2024; 8:e2300719. [PMID: 37926786 DOI: 10.1002/smtd.202300719] [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: 06/08/2023] [Revised: 10/03/2023] [Indexed: 11/07/2023]
Abstract
Cells are highly dynamic and adopt variable shapes and sizes. These variations are biologically important but challenging to investigate in a spatiotemporally controlled manner. Micropatterning, confining cells on microfabricated substrates with defined geometries and molecular compositions, is a powerful tool for controlling cell shape and interactions. However, conventional binary micropatterns are static and fail to address dynamic changes in cell polarity, spreading, and migration. Here, a method for dynamic micropatterning is reported, where the non-adhesive surface surrounding adhesive micropatterns is rapidly converted to support specific cell-matrix interactions while allowing simultaneous imaging of the cells. The technique is based on ultraviolet photopatterning of biotinylated polyethylene glycol-grafted poly-L-lysine, and it is simple, inexpensive, and compatible with a wide range of streptavidin-conjugated ligands. Experiments using biotinylation-based dynamic micropatterns reveal that distinct extracellular matrix ligands and bivalent integrin-clustering antibodies support different degrees of front-rear polarity in human glioblastoma cells, which correlates to altered directionality and persistence upon release and migration on fibronectin. Unexpectedly, however, neither an asymmetric cell shape nor centrosome orientation can fully predict the future direction of migration. Taken together, biotinylation-based dynamic micropatterns allow easily accessible and highly customizable control over cell morphology and motility.
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Affiliation(s)
- Aleksi Isomursu
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, Turku, 20520, Finland
| | - Jonna Alanko
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, Turku, 20520, Finland
| | - Sara Hernández-Pérez
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, Turku, 20520, Finland
- Institute of Biomedicine and MediCity Research Laboratories, University of Turku, Turku, 20014, Finland
- Department of Life Technologies, University of Turku, Turku, 20520, Finland
| | - Karla Saukkonen
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, Turku, 20520, Finland
| | - Markku Saari
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, Turku, 20520, Finland
| | - Pieta K Mattila
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, Turku, 20520, Finland
- Institute of Biomedicine and MediCity Research Laboratories, University of Turku, Turku, 20014, Finland
- Department of Life Technologies, University of Turku, Turku, 20520, Finland
| | - Johanna Ivaska
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, Turku, 20520, Finland
- Department of Life Technologies, University of Turku, Turku, 20520, Finland
- InFLAMES Research Flagship Center, University of Turku, Turku, 20520, Finland
- Western Finnish Cancer Center (FICAN West), University of Turku, Turku, 20520, Finland
- Foundation for the Finnish Cancer Institute, Helsinki, 00014, Finland
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3
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Savulescu AF, Peton N, Oosthuizen D, Hazra R, Rousseau RP, Mhlanga MM, Coussens AK. Quantifying spatial dynamics of Mycobacterium tuberculosis infection of human macrophages using microfabricated patterns. CELL REPORTS METHODS 2023; 3:100640. [PMID: 37963461 PMCID: PMC10694489 DOI: 10.1016/j.crmeth.2023.100640] [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: 11/10/2022] [Revised: 05/03/2023] [Accepted: 10/19/2023] [Indexed: 11/16/2023]
Abstract
Macrophages provide a first line of defense against invading pathogens, including the leading cause of bacterial mortality, Mycobacterium tuberculosis (Mtb). A challenge for quantitative characterization of host-pathogen processes in differentially polarized primary human monocyte-derived macrophages (MDMs) is their heterogeneous morphology. Here, we describe the use of microfabricated patterns that constrain the size and shape of cells, mimicking the physiological spatial confinement cells experience in tissues, to quantitatively characterize interactions during and after phagocytosis at the single-cell level at high resolution. Comparing pro-inflammatory (M1) and anti-inflammatory (M2) MDMs, we find interferon-γ stimulation increases the phagocytic contraction, while contraction and bacterial uptake decrease following silencing of phagocytosis regulator NHLRC2 or bacterial surface lipid removal. We identify host organelle position alterations within infected MDMs and differences in Mtb subcellular localization in line with M1 and M2 cellular polarity. Our approach can be adapted to study other host-pathogen interactions and coupled with downstream automated analytical approaches.
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Affiliation(s)
- Anca F Savulescu
- Division of Chemical, Systems, & Synthetic Biology, Institute for Infectious Disease & Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Observatory 7925, South Africa.
| | - Nashied Peton
- Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Observatory 7925, South Africa; Infectious Diseases and Immune Defence Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Pathology, University of Cape Town, Observatory 7925, South Africa
| | - Delia Oosthuizen
- Division of Chemical, Systems, & Synthetic Biology, Institute for Infectious Disease & Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Observatory 7925, South Africa
| | - Rudranil Hazra
- Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Observatory 7925, South Africa
| | - Robert P Rousseau
- Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Observatory 7925, South Africa
| | - Musa M Mhlanga
- Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, 6525 GA Nijmegen, the Netherlands; Epigenomics & Single Cell Biophysics Group, Department of Cell Biology, FNWI, Radboud University, 6525 GA Nijmegen, the Netherlands; Department of Human Genetics, Radboud University Medical Center, 6525 GA Nijmegen, the Netherlands.
| | - Anna K Coussens
- Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Observatory 7925, South Africa; Infectious Diseases and Immune Defence Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Pathology, University of Cape Town, Observatory 7925, South Africa; Department of Medical Biology, University of Melbourne, Parkville, VIC 3052, Australia.
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4
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Gcap14 is a microtubule plus-end-tracking protein coordinating microtubule-actin crosstalk during neurodevelopment. Proc Natl Acad Sci U S A 2023; 120:e2214507120. [PMID: 36795749 PMCID: PMC9974511 DOI: 10.1073/pnas.2214507120] [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] [Indexed: 02/17/2023] Open
Abstract
Regulation of microtubule dynamics is required to properly control various steps of neurodevelopment. In this study, we identified granule cell antiserum-positive 14 (Gcap14) as a microtubule plus-end-tracking protein and as a regulator of microtubule dynamics during neurodevelopment. Gcap14 knockout mice exhibited impaired cortical lamination. Gcap14 deficiency resulted in defective neuronal migration. Moreover, nuclear distribution element nudE-like 1 (Ndel1), an interacting partner of Gcap14, effectively corrected the downregulation of microtubule dynamics and the defects in neuronal migration caused by Gcap14 deficiency. Finally, we found that the Gcap14-Ndel1 complex participates in the functional link between microtubule and actin filament, thereby regulating their crosstalks in the growth cones of cortical neurons. Taken together, we propose that the Gcap14-Ndel1 complex is fundamental for cytoskeletal remodeling during neurodevelopmental processes such as neuronal processes elongation and neuronal migration.
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5
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Lorenz C, Köster S. Multiscale architecture: Mechanics of composite cytoskeletal networks. BIOPHYSICS REVIEWS 2022; 3:031304. [PMID: 38505277 PMCID: PMC10903411 DOI: 10.1063/5.0099405] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 07/27/2022] [Indexed: 03/21/2024]
Abstract
Different types of biological cells respond differently to mechanical stresses, and these responses are mainly governed by the cytoskeleton. The main components of this biopolymer network are actin filaments, microtubules, and intermediate filaments, whose mechanical and dynamic properties are highly distinct, thus opening up a large mechanical parameter space. Aside from experiments on whole, living cells, "bottom-up" approaches, utilizing purified, reconstituted protein systems, tremendously help to shed light on the complex mechanics of cytoskeletal networks. Such experiments are relevant in at least three aspects: (i) from a fundamental point of view, cytoskeletal networks provide a perfect model system for polymer physics; (ii) in materials science and "synthetic cell" approaches, one goal is to fully understand properties of cellular materials and reconstitute them in synthetic systems; (iii) many diseases are associated with cell mechanics, so a thorough understanding of the underlying phenomena may help solving pressing biomedical questions. In this review, we discuss the work on networks consisting of one, two, or all three types of filaments, entangled or cross-linked, and consider active elements such as molecular motors and dynamically growing filaments. Interestingly, tuning the interactions among the different filament types results in emergent network properties. We discuss current experimental challenges, such as the comparability of different studies, and recent methodological advances concerning the quantification of attractive forces between filaments and their influence on network mechanics.
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Affiliation(s)
- C. Lorenz
- Institute for X-Ray Physics, University of Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
| | - S. Köster
- Author to whom correspondence should be addressed:
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6
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Abstract
Actin filaments and microtubules are cytoskeletal polymers that participate in many vital cell functions including division, morphogenesis, phagocytosis, and motility. Despite the persistent dogma that actin filament and microtubule networks are distinct in localization, structure, and function, a growing body of evidence shows that these elements are choreographed through intricate mechanisms sensitive to either polymer. Many proteins and cellular signals that mediate actin–microtubule interactions have already been identified. However, the impact of these regulators is typically assessed with actin filament or microtubule polymers alone, independent of the other system. Further, unconventional modes and regulators coordinating actin–microtubule interactions are still being discovered. Here we examine several methods of actin–microtubule crosstalk with an emphasis on the molecular links between both polymer systems and their higher-order interactions.
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Affiliation(s)
- Morgan L Pimm
- Department of Biochemistry and Molecular Biology, SUNY Upstate Medical University, Syracuse, NY 13210
| | - Jessica L Henty-Ridilla
- Department of Biochemistry and Molecular Biology, SUNY Upstate Medical University, Syracuse, NY 13210.,Department of Neuroscience and Physiology, SUNY Upstate Medical University, Syracuse, NY 13210
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7
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In Vitro Reconstitution of Dynamic Co-organization of Microtubules and Actin Filaments in Emulsion Droplets. Methods Mol Biol 2021. [PMID: 31879898 DOI: 10.1007/978-1-0716-0219-5_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
In vitro (or cell-free) reconstitution is a powerful tool to study the physical basis of cytoskeletal organization in eukaryotic cells. Cytoskeletal reconstitution studies have mostly been done for individual cytoskeleton systems in unconfined 3D or quasi-2D geometries, which lack complexity relative to a cellular environment. To increase the level of complexity, we present a method to study co-organization of two cytoskeletal components, namely microtubules and actin filaments, confined in cell-sized water-in-oil emulsion droplets. We show that centrosome-nucleated dynamic microtubules can be made to interact with actin filaments through a tip-tracking complex consisting of microtubule end-binding proteins and an actin-microtubule cytolinker. In addition to the protocols themselves, we discuss the optimization steps required in order to build these more complex in vitro model systems of cytoskeletal interactions.
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8
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Seetharaman S, Etienne-Manneville S. Cytoskeletal Crosstalk in Cell Migration. Trends Cell Biol 2020; 30:720-735. [DOI: 10.1016/j.tcb.2020.06.004] [Citation(s) in RCA: 109] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 06/09/2020] [Accepted: 06/10/2020] [Indexed: 01/15/2023]
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9
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Abstract
Directed cell migration is critical for embryogenesis and organ development, wound healing and the immune response. Microtubules are dynamic polymers that control directional migration through a number of coordinated processes: microtubules are the tracks for long-distance intracellular transport, crucial for delivery of new membrane components and signalling molecules to the leading edge of a migrating cell and the recycling of adhesion receptors. Microtubules act as force generators and compressive elements to support sustained cell protrusions. The assembly and disassembly of microtubules is coupled to Rho GTPase signalling, thereby controlling actin polymerisation, myosin-driven contractility and the turnover of cellular adhesions locally. Cross-talk of actin and microtubule dynamics is mediated through a number of common binding proteins and regulators. Furthermore, cortical microtubule capture sites are physically linked to focal adhesions, facilitating the delivery of secretory vesicles and efficient cross-talk. Here we summarise the diverse functions of microtubules during cell migration, aiming to show how they contribute to the spatially and temporally coordinated sequence of events that permit efficient, directional and persistent migration.
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10
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Li S, Wang Z, Tong H, Li S, Yan Y. TCP11L2 promotes bovine skeletal muscle-derived satellite cell migration and differentiation via FMNL2. J Cell Physiol 2020; 235:7183-7193. [PMID: 32017087 DOI: 10.1002/jcp.29617] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 01/27/2020] [Indexed: 12/29/2022]
Abstract
T-complex 11 like 2 (TCP11L2) is a protein containing a serine-rich region in its N-terminal region. However, the function of TCP11L2 is unclear. Here, we showed that TCP11L2 expression gradually increased during muscle-derived satellite cell (MDSC) differentiation in vitro, reaching a peak on Day 3, which is the migration and fusion stage of MDSCs. Using CRISPR/dCas9 gene-editing technology to elevate or repress the expression of TCP11L2, we also showed that TCP11L2 promoted MDSC differentiation. Moreover, wound-healing assays showed that TCP11L2 promoted the migration of MDSCs during differentiation. Additionally, immunofluorescence analyses showed that TCP11L2 was mainly distributed around the microfilament and microtubules. Furthermore, the expression of TCP11L2 affected the expression of actin-related protein 2/3 (ARP2/3) complex. Co-immunoprecipitation assays and immunofluorescence analysis showed that TCP11L2 interacted with formin-like 2 (FMNL2). This protein promoted migration of bovine MDSCs by affecting the expression of ARP2/3. Finally, the activities of TCP11L2 during MDSC differentiation and migration were blocked when FMNL2 was inhibited. Taken together, our data established that TCP11L2 interacted with FMNL2 to promote MDSC migration and differentiation.
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Affiliation(s)
- Shuang Li
- The Laboratory of Cell and Development, Northeast Agricultural University, Harbin, Heilongjiang, China.,College of Human Movement Science, Harbin Sport University, Harbin, Heilongjiang, China
| | - Zhiqi Wang
- The Laboratory of Cell and Development, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Huili Tong
- The Laboratory of Cell and Development, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Shufeng Li
- The Laboratory of Cell and Development, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Yunqin Yan
- The Laboratory of Cell and Development, Northeast Agricultural University, Harbin, Heilongjiang, China
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12
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Bao M, Xie J, Huck WTS. Recent Advances in Engineering the Stem Cell Microniche in 3D. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1800448. [PMID: 30128252 PMCID: PMC6096985 DOI: 10.1002/advs.201800448] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 05/01/2018] [Indexed: 05/18/2023]
Abstract
Conventional 2D cell culture techniques have provided fundamental insights into key biochemical and biophysical mechanisms responsible for various cellular behaviors, such as cell adhesion, spreading, division, proliferation, and differentiation. However, 2D culture in vitro does not fully capture the physical and chemical properties of the native microenvironment. There is a growing body of research that suggests that cells cultured on 2D substrates differ greatly from those grown in vivo. This article focuses on recent progress in using bioinspired 3D matrices that recapitulate as many aspects of the natural extracellular matrix as possible. A range of techniques for the engineering of 3D microenvironment with precisely controlled biophysical and chemical properties, and the impact of these environments on cellular behavior, is reviewed. Finally, an outlook on future challenges for engineering the 3D microenvironment and how such approaches would further our understanding of the influence of the microenvironment on cell function is provided.
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Affiliation(s)
- Min Bao
- Institute for Molecules and MaterialsRadboud UniversityHeyendaalseweg 1356525 AJNijmegenThe Netherlands
| | - Jing Xie
- Institute for Molecules and MaterialsRadboud UniversityHeyendaalseweg 1356525 AJNijmegenThe Netherlands
| | - Wilhelm T. S. Huck
- Institute for Molecules and MaterialsRadboud UniversityHeyendaalseweg 1356525 AJNijmegenThe Netherlands
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13
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Anselme K, Wakhloo NT, Rougerie P, Pieuchot L. Role of the Nucleus as a Sensor of Cell Environment Topography. Adv Healthc Mater 2018; 7:e1701154. [PMID: 29283219 DOI: 10.1002/adhm.201701154] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 11/06/2017] [Indexed: 12/25/2022]
Abstract
The proper integration of biophysical cues from the cell vicinity is crucial for cells to maintain homeostasis, cooperate with other cells within the tissues, and properly fulfill their biological function. It is therefore crucial to fully understand how cells integrate these extracellular signals for tissue engineering and regenerative medicine. Topography has emerged as a prominent component of the cellular microenvironment that has pleiotropic effects on cell behavior. This progress report focuses on the recent advances in the understanding of the topography sensing mechanism with a special emphasis on the role of the nucleus. Here, recent techniques developed for monitoring the nuclear mechanics are reviewed and the impact of various topographies and their consequences on nuclear organization, gene regulation, and stem cell fate is summarized. The role of the cell nucleus as a sensor of cell-scale topography is further discussed.
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Affiliation(s)
- Karine Anselme
- University of Haute‐AlsaceUniversity of Strasbourg CNRS UMR7361, IS2M 68057 Mulhouse France
| | - Nayana Tusamda Wakhloo
- University of Haute‐AlsaceUniversity of Strasbourg CNRS UMR7361, IS2M 68057 Mulhouse France
| | - Pablo Rougerie
- Institute of Biomedical SciencesFederal University of Rio de Janeiro Rio de Janeiro RJ 21941‐902 Brazil
| | - Laurent Pieuchot
- University of Haute‐AlsaceUniversity of Strasbourg CNRS UMR7361, IS2M 68057 Mulhouse France
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14
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A Force-Induced Directional Switch of a Molecular Motor Enables Parallel Microtubule Bundle Formation. Cell 2016; 167:539-552.e14. [DOI: 10.1016/j.cell.2016.09.029] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 06/25/2016] [Accepted: 09/12/2016] [Indexed: 12/17/2022]
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15
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Lee K, Kim EH, Oh N, Tuan NA, Bae NH, Lee SJ, Lee KG, Eom CY, Yim EK, Park S. Contribution of actin filaments and microtubules to cell elongation and alignment depends on the grating depth of microgratings. J Nanobiotechnology 2016; 14:35. [PMID: 27129379 PMCID: PMC4850729 DOI: 10.1186/s12951-016-0187-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Accepted: 04/19/2016] [Indexed: 11/10/2022] Open
Abstract
Background It has been reported that both chemical and physical surface patterns influence cellular behaviors, such as cell alignment and elongation. However, it still remains unclear how actin filament and microtubules (MTs) differentially respond to these patterns. Results We examined the effects of chemical and physical patterns on cell elongation and alignment by observing actin filament and MTs of retinal pigment epithelium-1(RPE-1) cells, which were cultured on either fibronectin (FN)-line pattern (line width and spacing: 1 μm) or FN-coated 1 μm gratings with two different depths (0.35 or 1 μm). On the surface with either FN-line pattern or micrograting structure, the cell aspect ratios were at least two times higher than those on the surface with no pattern. Cell elongation on the gratings depended on the depth of the gratings. Cell elongation and alignment on both FN-line pattern and 1 μm gratings with 0.35 μm depth were perturbed either by inhibition of actin polymerization or MT depletion, while cell elongation and alignment on 1 μm gratings with 1 μm depth were perturbed only by MT depletion. Conclusions Our results suggest that the contribution of actin filaments and MTs to the elongation and alignment of epithelial cells on microgratings depends on the groove depth of these gratings. Electronic supplementary material The online version of this article (doi:10.1186/s12951-016-0187-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Kyunghee Lee
- Mechanobiology Institute (MBI), National University of Singapore, Singapore, 117411, Singapore
| | - Ee Hyun Kim
- Mechanobiology Institute (MBI), National University of Singapore, Singapore, 117411, Singapore.,Department of Chemistry and Nano Sciences (BK21 plus), Ewha Womans University, Seoul, 120-750, South Korea
| | - Naeun Oh
- Department of Chemistry and Nano Sciences (BK21 plus), Ewha Womans University, Seoul, 120-750, South Korea
| | - Nguyen Anh Tuan
- Mechanobiology Institute (MBI), National University of Singapore, Singapore, 117411, Singapore
| | - Nam Ho Bae
- Department of Nano Bio Research, National Nanofab Center (NNFC), Daejeon, 305-806, South Korea
| | - Seok Jae Lee
- Department of Nano Bio Research, National Nanofab Center (NNFC), Daejeon, 305-806, South Korea
| | - Kyoung G Lee
- Department of Nano Bio Research, National Nanofab Center (NNFC), Daejeon, 305-806, South Korea
| | - Chi-Yong Eom
- Seoul Center, Korea Basic Science Institute, Seoul, 136-713, South Korea
| | - Evelyn K Yim
- Mechanobiology Institute (MBI), National University of Singapore, Singapore, 117411, Singapore.,Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON, N2L 3G1, Canada
| | - Sungsu Park
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, 440-746, South Korea.
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16
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Ladoux B, Mège RM, Trepat X. Front-Rear Polarization by Mechanical Cues: From Single Cells to Tissues. Trends Cell Biol 2016; 26:420-433. [PMID: 26920934 DOI: 10.1016/j.tcb.2016.02.002] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 01/30/2016] [Accepted: 02/02/2016] [Indexed: 11/15/2022]
Abstract
Directed cell migration is a complex process that involves front-rear polarization, characterized by cell adhesion and cytoskeleton-based protrusion, retraction, and contraction of either a single cell or a cell collective. Single cell polarization depends on a variety of mechanochemical signals including external adhesive cues, substrate stiffness, and confinement. In cell ensembles, coordinated polarization of migrating tissues results not only from the application of traction forces on the extracellular matrix but also from the transmission of mechanical stress through intercellular junctions. We focus here on the impact of mechanical cues on the establishment and maintenance of front-rear polarization from single cell to collective cell behaviors through local or large-scale mechanisms.
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Affiliation(s)
- Benoit Ladoux
- Institut Jacques Monod (IJM), CNRS UMR 7592 et Université Paris Diderot, Paris, France; Mechanobiology Institute, National University of Singapore, 5A Engineering Drive 1, 117411, Singapore.
| | - René-Marc Mège
- Institut Jacques Monod (IJM), CNRS UMR 7592 et Université Paris Diderot, Paris, France.
| | - Xavier Trepat
- Institute for Bioengineering of Catalonia, Barcelona, Barcelona, 08028 Spain; Catalan Institution for Research and Advanced Studies (ICREA), 08010, Barcelona, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain; Facultat de Medicina, Universitat de Barcelona, 08036 Barcelona, Spain.
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17
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Kiuchi T, Higuchi M, Takamura A, Maruoka M, Watanabe N. Multitarget super-resolution microscopy with high-density labeling by exchangeable probes. Nat Methods 2015; 12:743-6. [PMID: 26147917 DOI: 10.1038/nmeth.3466] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Accepted: 06/08/2015] [Indexed: 01/19/2023]
Abstract
We have developed a multitarget super-resolution microscopy technique called image reconstruction by integrating exchangeable single-molecule localization (IRIS). IRIS uses protein fragment-based probes that directly associate with and dissociate from their targets over durations on the order of tens of milliseconds. By integrating single-molecule localization and sequential labeling, IRIS enables unprecedented labeling density along multiple cellular structures. IRIS can be used to discern the area-specific proximity between cytoskeletal components and focal adhesions within a single cell.
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Affiliation(s)
- Tai Kiuchi
- Department of Pharmacology, Kyoto University Faculty of Medicine, Kyoto, Japan
| | - Makio Higuchi
- Department of Pharmacology, Kyoto University Faculty of Medicine, Kyoto, Japan
| | - Akihiro Takamura
- Laboratory of Single-Molecule Cell Biology, Tohoku University Graduate School of Life Sciences, Sendai, Japan
| | - Masahiro Maruoka
- Laboratory of Single-Molecule Cell Biology, Tohoku University Graduate School of Life Sciences, Sendai, Japan
| | - Naoki Watanabe
- 1] Department of Pharmacology, Kyoto University Faculty of Medicine, Kyoto, Japan. [2] Laboratory of Single-Molecule Cell Biology, Kyoto University Graduate School of Biostudies, Kyoto, Japan
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18
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Huda S, Pilans D, Makurath M, Hermans T, Kandere-Grzybowska K, Grzybowski BA. Microfabricated Systems and Assays for Studying the Cytoskeletal Organization, Micromechanics, and Motility Patterns of Cancerous Cells. ADVANCED MATERIALS INTERFACES 2014; 1:1400158. [PMID: 26900544 PMCID: PMC4757490 DOI: 10.1002/admi.201400158] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Cell motions are driven by coordinated actions of the intracellular cytoskeleton - actin, microtubules (MTs) and substrate/focal adhesions (FAs). This coordination is altered in metastatic cancer cells resulting in deregulated and increased cellular motility. Microfabrication tools, including photolithography, micromolding, microcontact printing, wet stamping and microfluidic devices have emerged as a powerful set of experimental tools with which to probe and define the differences in cytoskeleton organization/dynamics and cell motility patterns in non-metastatic and metastatic cancer cells. In this review, we discuss four categories of microfabricated systems: (i) micropatterned substrates for studying of cell motility sub-processes (for example, MT targeting of FAs or cell polarization); (ii) systems for studying cell mechanical properties, (iii) systems for probing overall cell motility patterns within challenging geometric confines relevant to metastasis (for example, linear and ratchet geometries), and (iv) microfluidic devices that incorporate co-cultures of multiple cells types and chemical gradients to mimic in vivo intravasation/extravasation steps of metastasis. Together, these systems allow for creating controlled microenvironments that not only mimic complex soft tissues, but are also compatible with live cell high-resolution imaging and quantitative analysis of single cell behavior.
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Affiliation(s)
- Sabil Huda
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL, USA
| | - Didzis Pilans
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL, USA
| | - Monika Makurath
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL, USA
| | - Thomas Hermans
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL, USA
| | - Kristiana Kandere-Grzybowska
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL, USA
| | - Bartosz A Grzybowski
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL, USA; Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, USA
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19
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López MP, Huber F, Grigoriev I, Steinmetz MO, Akhmanova A, Koenderink GH, Dogterom M. Actin-microtubule coordination at growing microtubule ends. Nat Commun 2014; 5:4778. [PMID: 25159196 PMCID: PMC4365169 DOI: 10.1038/ncomms5778] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 07/23/2014] [Indexed: 11/09/2022] Open
Abstract
To power dynamic processes in cells, the actin and microtubule cytoskeletons organize into complex structures. Although it is known that cytoskeletal coordination is vital for cell function, the mechanisms by which cross-linking proteins coordinate actin and microtubule activities remain poorly understood. In particular, it is unknown how the distinct mechanical properties of different actin architectures modulate the outcome of actin-microtubule interactions. To address this question, we engineered the protein TipAct, which links growing microtubule ends via end-binding proteins to actin filaments. We show that growing microtubules can be captured and guided by stiff actin bundles, leading to global actin-microtubule alignment. Conversely, growing microtubule ends can transport, stretch and bundle individual actin filaments, thereby globally defining actin filament organization. Our results provide a physical basis to understand actin-microtubule cross-talk, and reveal that a simple cross-linker can enable a mechanical feedback between actin and microtubule organization that is relevant to diverse biological contexts.
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Affiliation(s)
| | - Florian Huber
- FOM Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
| | - Ilya Grigoriev
- Division of Cell Biology, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Michel O. Steinmetz
- Laboratory of Biomolecular Research, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - Anna Akhmanova
- Division of Cell Biology, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | | | - Marileen Dogterom
- FOM Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
- Present address: Department of Bionanoscience, Faculty of Applied Sciences, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands
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20
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Plestant C, Strale PO, Seddiki R, Nguyen E, Ladoux B, Mège RM. Adhesive interactions of N-cadherin limit the recruitment of microtubules to cell–cell contacts through organization of actomyosin. J Cell Sci 2014; 127:1660-71. [DOI: 10.1242/jcs.131284] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
ABSTRACT
Adhesive interactions of cadherins induce crosstalk between adhesion complexes and the actin cytoskeleton, allowing strengthening of adhesions and cytoskeletal organization. The underlying mechanisms are not completely understood, and microtubules (MTs) might be involved, as for integrin-mediated cell–extracellular-matrix adhesions. Therefore, we investigated the relationship between N-cadherin and MTs by analyzing the influence of N-cadherin engagement on MT distribution and dynamics. MTs progressed less, with a lower elongation rate, towards cadherin adhesions than towards focal adhesions. Increased actin treadmilling and the presence of an actomyosin contractile belt, suggested that actin relays inhibitory signals from cadherin adhesions to MTs. The reduced rate of MT elongation, associated with reduced recruitment of end-binding (EB) proteins to plus ends, was alleviated by expression of truncated N-cadherin, but was only moderately affected when actomyosin was disrupted. By contrast, destabilizing actomyosin fibers allowed MTs to enter the adhesion area, suggesting that tangential actin bundles impede MT growth independently of MT dynamics. Blocking MT penetration into the adhesion area strengthened cadherin adhesions. Taken together, these results establish a crosstalk between N-cadherin, F-actin and MTs. The opposing effects of cadherin and integrin engagement on actin organization and MT distribution might induce bias of the MT network during cell polarization.
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Affiliation(s)
- Charlotte Plestant
- Institut du Fer à Moulin, UMRS 839 INSERM, Université Pierre et Marie Curie, 75005 Paris, France
| | - Pierre-Olivier Strale
- Institut du Fer à Moulin, UMRS 839 INSERM, Université Pierre et Marie Curie, 75005 Paris, France
| | - Rima Seddiki
- Institut du Fer à Moulin, UMRS 839 INSERM, Université Pierre et Marie Curie, 75005 Paris, France
- Institut Jacques Monod, UMR7592 CNRS, Université Paris Diderot, 75013 Paris, France
| | - Emmanuelle Nguyen
- Mechanobiology Institute, National University of Singapore, 117411 Singapore
| | - Benoit Ladoux
- Institut Jacques Monod, UMR7592 CNRS, Université Paris Diderot, 75013 Paris, France
- Mechanobiology Institute, National University of Singapore, 117411 Singapore
| | - René-Marc Mège
- Institut du Fer à Moulin, UMRS 839 INSERM, Université Pierre et Marie Curie, 75005 Paris, France
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21
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Wilk G, Iwasa M, Fuller PE, Kandere-Grzybowska K, Grzybowski BA. Universal area distributions in the monolayers of confluent mammalian cells. PHYSICAL REVIEW LETTERS 2014; 112:138104. [PMID: 24745461 PMCID: PMC4113185 DOI: 10.1103/physrevlett.112.138104] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Indexed: 05/04/2023]
Abstract
When mammalian cells form confluent monolayers completely filling a plane, these apparently random "tilings" show regularity in the statistics of cell areas for various types of epithelial and endothelial cells. The observed distributions are reproduced by a model which accounts for cell growth and division, with the latter treated stochastically both in terms of the sizes of the dividing cells as well as the sizes of the "newborn" ones--remarkably, the modeled and experimental distributions fit well when all free parameters are estimated directly from experiments.
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Affiliation(s)
- Gary Wilk
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Rd, Evanston, IL 60208, USA
| | - Masatomo Iwasa
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Rd, Evanston, IL 60208, USA
| | - Patrick E. Fuller
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Rd, Evanston, IL 60208, USA
| | - Kristiana Kandere-Grzybowska
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Rd, Evanston, IL 60208, USA
| | - Bartosz A. Grzybowski
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Rd, Evanston, IL 60208, USA
- Department of Chemistry, Northwestern University, 2145 Sheridan Rd, Evanston, IL 60208, USA
- Correspondence to: B.A.G. at , Phone: 1-847-491-3024
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