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Shrivastava A, Kumar A, Aggarwal LM, Pradhan S, Choudhary S, Ashish A, Kashyap K, Mishra S. Evolution of Bioelectric Membrane Potentials: Implications in Cancer Pathogenesis and Therapeutic Strategies. J Membr Biol 2024:10.1007/s00232-024-00323-2. [PMID: 39183198 DOI: 10.1007/s00232-024-00323-2] [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: 05/30/2024] [Accepted: 08/16/2024] [Indexed: 08/27/2024]
Abstract
Electrophysiology typically deals with the electrical properties of excitable cells like neurons and muscles. However, all other cells (non-excitable) also possess bioelectric membrane potentials for intracellular and extracellular communications. These membrane potentials are generated by different ions present in fluids available in and outside the cell, playing a vital role in communication and coordination between the cell and its organelles. Bioelectric membrane potential variations disturb cellular ionic homeostasis and are characteristic of many diseases, including cancers. A rapidly increasing interest has emerged in sorting out the electrophysiology of cancer cells. Compared to healthy cells, the distinct electrical properties exhibited by cancer cells offer a unique way of understanding cancer development, migration, and progression. Decoding the altered bioelectric signals influenced by fluctuating electric fields benefits understanding cancer more closely. While cancer research has predominantly focussed on genetic and molecular traits, the delicate area of electrophysiological characteristics has increasingly gained prominence. This review explores the historical exploration of electrophysiology in the context of cancer cells, shedding light on how alterations in bioelectric membrane potentials, mediated by ion channels and gap junctions, contribute to the pathophysiology of cancer.
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Affiliation(s)
- Anju Shrivastava
- Department of Physiology, Chhattisgarh Institute of Medical Sciences, Bilaspur, India.
| | - Amit Kumar
- Department of Anatomy, Chhattisgarh Institute of Medical Sciences, Bilaspur, India
| | - Lalit Mohan Aggarwal
- Radiotherapy and Radiation Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Satyajit Pradhan
- Radiation Oncology, Mahamana Pandit Madhan Mohan Malaviya Cancer Centre, Varanasi, India
| | - Sunil Choudhary
- Radiotherapy and Radiation Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Ashish Ashish
- Department of Anatomy, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Keshav Kashyap
- Department of Physiology, Chhattisgarh Institute of Medical Sciences, Bilaspur, India
| | - Shivani Mishra
- Department of Anatomy, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
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2
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So CL, Robitaille M, Sadras F, McCullough MH, Milevskiy MJG, Goodhill GJ, Roberts-Thomson SJ, Monteith GR. Cellular geometry and epithelial-mesenchymal plasticity intersect with PIEZO1 in breast cancer cells. Commun Biol 2024; 7:467. [PMID: 38632473 PMCID: PMC11024093 DOI: 10.1038/s42003-024-06163-z] [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: 05/20/2023] [Accepted: 04/08/2024] [Indexed: 04/19/2024] Open
Abstract
Differences in shape can be a distinguishing feature between different cell types, but the shape of a cell can also be dynamic. Changes in cell shape are critical when cancer cells escape from the primary tumor and undergo major morphological changes that allow them to squeeze between endothelial cells, enter the vasculature, and metastasize to other areas of the body. A shift from rounded to spindly cellular geometry is a consequence of epithelial-mesenchymal plasticity, which is also associated with changes in gene expression, increased invasiveness, and therapeutic resistance. However, the consequences and functional impacts of cell shape changes and the mechanisms through which they occur are still poorly understood. Here, we demonstrate that altering the morphology of a cell produces a remodeling of calcium influx via the ion channel PIEZO1 and identify PIEZO1 as an inducer of features of epithelial-to-mesenchymal plasticity. Combining automated epifluorescence microscopy and a genetically encoded calcium indicator, we demonstrate that activation of the PIEZO1 force channel with the PIEZO1 agonist, YODA 1, induces features of epithelial-to-mesenchymal plasticity in breast cancer cells. These findings suggest that PIEZO1 is a critical point of convergence between shape-induced changes in cellular signaling and epithelial-mesenchymal plasticity in breast cancer cells.
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Affiliation(s)
- Choon Leng So
- School of Pharmacy, The University of Queensland, Woolloongabba, QLD, 4102, Australia
- Department of Biochemistry and Molecular Biology, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, 21205, USA
| | - Mélanie Robitaille
- School of Pharmacy, The University of Queensland, Woolloongabba, QLD, 4102, Australia
| | - Francisco Sadras
- School of Pharmacy, The University of Queensland, Woolloongabba, QLD, 4102, Australia
| | - Michael H McCullough
- Queensland Brain Institute and School of Mathematics and Physics, The University of Queensland, Brisbane, QLD, 4072, Australia
- Eccles Institute of Neuroscience, John Curtin School of Medical Research, and School of Computing, ANU College of Engineering and Computer Science, The Australian National University, Canberra, ACT, 2600, Australia
| | - Michael J G Milevskiy
- ACRF Cancer Biology and Stem Cells Division, The Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC, 3052, Australia
- Department of Medical Biology, The University of Melbourne, Parkville, VIC, 2010, Australia
| | - Geoffrey J Goodhill
- Queensland Brain Institute and School of Mathematics and Physics, The University of Queensland, Brisbane, QLD, 4072, Australia
- Departments of Developmental Biology and Neuroscience, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | | | - Gregory R Monteith
- School of Pharmacy, The University of Queensland, Woolloongabba, QLD, 4102, Australia.
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Szczodra A, Houaoui A, Salminen T, Hannula M, Gobbo VA, Ghanavati S, Miettinen S, Massera J. Pore graded borosilicate bioactive glass scaffolds: in vitro dissolution and cytocompatibility. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2024; 35:17. [PMID: 38507150 PMCID: PMC10954867 DOI: 10.1007/s10856-024-06791-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 03/05/2024] [Indexed: 03/22/2024]
Abstract
3D borosilicate bioactive glass (1393B20 and B12.5MgSr) scaffolds were prepared by robocasting, with and without a dense layer at the top. Pore graded scaffolds are promising as they allow for membrane deposition and could limit the risk of soft tissue infiltration. In vitro dissolution was studied in tris(hydroxymethyl)aminomethane (TRIS) and Simulated Body Fluid (SBF). 1393B20 scaffolds dissolved faster than B12.5MgSr in TRIS whereas they dissolved slower in SBF. The difference in dissolution profiles, as a function of the medium used, is assigned to the different rates of precipitation of hydroxyapatite (HA). While the precipitation of calcium phosphate (CaP) in the form of HA, first sign of bioactivity, was confirmed by ICP, FTIR-ATR and SEM-EDX analysis for both compositions, 1393B20 was found to precipitate HA at a faster rate. The presence of a dense top layer did not significantly impact the dissolution rate and CaP precipitation. In vitro cell culture was performed using human adipose-derived stem cells (hADSCs). Prior to cell plating, a preincubation of 3 days was found optimum to prevent burst ion release. In direct contact, cells proliferate and spread on the scaffolds while maintaining characteristic spindle morphology. Cell plated on 1393B20 scaffolds showed increased viability when compared to cell plated on B12.5MgSr. The lower cell viability, when testing B12.5MgSr, was assigned to the depletion of Ca2+ ions from culture medium and higher pH. Static cell culture leads to believe that the scaffold produced from the 1393B20 glass composition are promising in bone regeneration applications.
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Affiliation(s)
- Agata Szczodra
- Tampere University, Faculty of Medicine and Health Technology, Tampere, Finland.
| | - Amel Houaoui
- Tampere University, Faculty of Medicine and Health Technology, Tampere, Finland
| | - Turkka Salminen
- Tampere University, Faculty of Engineering and Natural Sciences, Tampere, Finland
| | - Markus Hannula
- Tampere University, Faculty of Medicine and Health Technology, Tampere, Finland
| | | | - Sonya Ghanavati
- Tampere University, Faculty of Medicine and Health Technology, Tampere, Finland
| | - Susanna Miettinen
- Tampere University, Faculty of Medicine and Health Technology, Tampere, Finland
- Research Services, Wellbeing Services County of Pirkanmaa, Tampere University Hospital, Tampere, Finland
| | - Jonathan Massera
- Tampere University, Faculty of Medicine and Health Technology, Tampere, Finland
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Kscheschinski B, Kramar M, Alim K. Calcium regulates cortex contraction in Physarum polycephalum. Phys Biol 2023; 21:016001. [PMID: 37975194 DOI: 10.1088/1478-3975/ad0a9a] [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: 06/22/2023] [Accepted: 11/08/2023] [Indexed: 11/19/2023]
Abstract
The tubular network-forming slime moldPhysarum polycephalumis able to maintain long-scale contraction patterns driven by an actomyosin cortex. The resulting shuttle streaming in the network is crucial for the organism to respond to external stimuli and reorganize its body mass giving rise to complex behaviors. However, the chemical basis of the self-organized flow pattern is not fully understood. Here, we present ratiometric measurements of free intracellular calcium in simple morphologies ofPhysarumnetworks. The spatiotemporal patterns of the free calcium concentration reveal a nearly anti-correlated relation to the tube radius, suggesting that calcium is indeed a key regulator of the actomyosin activity. We compare the experimentally observed phase relation between the radius and the calcium concentration to the predictions of a theoretical model including calcium as an inhibitor. Numerical simulations of the model suggest that calcium indeed inhibits the contractions inPhysarum, although a quantitative difference to the experimentally measured phase relation remains. Unraveling the mechanism underlying the contraction patterns is a key step in gaining further insight into the principles ofPhysarum's complex behavior.
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Affiliation(s)
- Bjoern Kscheschinski
- Max Planck Institute for Dynamics and Self-Organization, 37077 Göttingen, Germany
| | - Mirna Kramar
- Max Planck Institute for Dynamics and Self-Organization, 37077 Göttingen, Germany
| | - Karen Alim
- Max Planck Institute for Dynamics and Self-Organization, 37077 Göttingen, Germany
- TUM School of Natural Sciences, Department of Bioscience, Center for Protein Assemblies (CPA), Technical University of Munich, Garching, 85748, Germany
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Li C, Yu P, Wang Z, Long C, Xiao C, Xing J, Dong B, Zhai J, Zhou L, Zhou Z, Wang Y, Zhu W, Tan G, Ning C, Zhou Y, Mao C. Electro-mechanical coupling directs endothelial activities through intracellular calcium ion deployment. MATERIALS HORIZONS 2023; 10:4903-4913. [PMID: 37750251 DOI: 10.1039/d3mh01049j] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
Conversion between mechanical and electrical cues is usually considered unidirectional in cells with cardiomyocytes being an exception. Here, we discover a material-induced external electric field (Eex) triggers an electro-mechanical coupling feedback loop in cells other than cardiomyocytes, human umbilical vein endothelial cells (HUVECs), by opening their mechanosensitive Piezo1 channels. When HUVECs are cultured on patterned piezoelectric materials, the materials generate Eex (confined at the cellular scale) to polarize intracellular calcium ions ([Ca2+]i), forming a built-in electric field (Ein) opposing Eex. Furthermore, the [Ca2+]i polarization stimulates HUVECs to shrink their cytoskeletons, activating Piezo1 channels to induce influx of extracellular Ca2+ that gradually increases Ein to balance Eex. Such an electro-mechanical coupling feedback loop directs pre-angiogenic activities such as alignment, elongation, and migration of HUVECs. Activated calcium dynamics during the coupling further modulate the downstream angiogenesis-inducing eNOS/NO pathway. These findings lay a foundation for developing new ways of electrical stimulation-based disease treatment.
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Affiliation(s)
- Changhao Li
- School of Material Science and Engineering & National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, 510055, China
| | - Peng Yu
- School of Material Science and Engineering & National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.
| | - Zhengao Wang
- School of Material Science and Engineering & National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.
| | - Cheng Long
- School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Cairong Xiao
- School of Material Science and Engineering & National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.
| | - Jun Xing
- School of Material Science and Engineering & National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.
| | - Binbin Dong
- School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Jinxia Zhai
- School of Material Science and Engineering & National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.
| | - Lei Zhou
- School of Material Science and Engineering & National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.
| | - Zhengnan Zhou
- School of Material Science and Engineering & National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.
| | - Yan Wang
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, 510055, China
| | - Wenjun Zhu
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, 510055, China
| | - Guoxin Tan
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China
| | - Chengyun Ning
- School of Material Science and Engineering & National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.
| | - Yahong Zhou
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Science, Beijing 100190, China.
| | - Chuanbin Mao
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Sha Tin, Hong Kong SAR, China.
- School of Materials Science & Engineering, Zhejiang University, Hangzhou, 310027, China
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Becchetti A. Interplay of Ca 2+ and K + signals in cell physiology and cancer. CURRENT TOPICS IN MEMBRANES 2023; 92:15-46. [PMID: 38007266 DOI: 10.1016/bs.ctm.2023.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2023]
Abstract
The cytoplasmic Ca2+ concentration and the activity of K+ channels on the plasma membrane regulate cellular processes ranging from mitosis to oriented migration. The interplay between Ca2+ and K+ signals is intricate, and different cell types rely on peculiar cellular mechanisms. Derangement of these mechanisms accompanies the neoplastic progression. The calcium signals modulated by voltage-gated (KV) and calcium-dependent (KCa) K+ channel activity regulate progression of the cell division cycle, the release of growth factors, apoptosis, cell motility and migration. Moreover, KV channels regulate the cell response to the local microenvironment by assembling with cell adhesion and growth factor receptors. This chapter summarizes the pathophysiological roles of Ca2+ and K+ fluxes in normal and cancer cells, by concentrating on several biological systems in which these functions have been studied in depth, such as early embryos, mammalian cell lines, T lymphocytes, gliomas and colorectal cancer cells. A full understanding of the underlying mechanisms will offer a comprehensive view of the ion channel implication in cancer biology and suggest potential pharmacological targets for novel therapeutic approaches in oncology.
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Affiliation(s)
- Andrea Becchetti
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milano, Italy.
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7
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Mogilner A, Savinov M. Crawling, waving, inch worming, dilating, and pivoting mechanics of migrating cells: Lessons from Ken Jacobson. Biophys J 2023; 122:3551-3559. [PMID: 36934300 PMCID: PMC10541468 DOI: 10.1016/j.bpj.2023.03.023] [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: 01/28/2023] [Revised: 03/07/2023] [Accepted: 03/15/2023] [Indexed: 03/19/2023] Open
Abstract
Research on the locomotion of single cells on hard, flat surfaces brought insight into the mechanisms of leading-edge protrusion, spatially graded adhesion, front-rear coordination, and how intracellular and traction forces are harnessed to execute various maneuvers. Here, we highlight how, by studying a variety of cell types, shapes, and movements, Ken Jacobson and his collaborators made several discoveries that triggered the mechanistic understanding of cell motility. We then review the recent advancements and current perspectives in this field.
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Affiliation(s)
- Alex Mogilner
- Courant Institute of Mathematical Sciences, New York University, New York, New York; Department of Biology, New York University, New York, New York.
| | - Mariya Savinov
- Courant Institute of Mathematical Sciences, New York University, New York, New York
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Ráduly Z, Szabó L, Dienes B, Szentesi P, Bana ÁV, Hajdú T, Kókai E, Hegedűs C, Csernoch L, Gönczi M. Migration of Myogenic Cells Is Highly Influenced by Cytoskeletal Septin7. Cells 2023; 12:1825. [PMID: 37508490 PMCID: PMC10378681 DOI: 10.3390/cells12141825] [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: 05/30/2023] [Revised: 06/19/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023] Open
Abstract
Septin7 as a unique member of the GTP binding protein family, is widely expressed in the eukaryotic cells and considered to be essential in the formation of hetero-oligomeric septin complexes. As a cytoskeletal component, Septin7 is involved in many important cellular processes. However, its contribution in striated muscle physiology is poorly described. In skeletal muscle, a highly orchestrated process of migration is crucial in the development of functional fibers and in regeneration. Here, we describe the pronounced appearance of Septin7 filaments and a continuous change of Septin7 protein architecture during the migration of myogenic cells. In Septin7 knockdown C2C12 cultures, the basic parameters of migration are significantly different, and the intracellular calcium concentration change in migrating cells are lower compared to that of scrambled cultures. Using a plant cytokinin, forchlorfenuron, to dampen septin dynamics, the altered behavior of the migrating cells is described, where Septin7-depleted cells are more resistant to the treatment. These results indicate the functional relevance of Septin7 in the migration of myoblasts, implying its contribution to muscle myogenesis and regeneration.
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Affiliation(s)
- Zsolt Ráduly
- Department of Physiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
- ELKH-DE Cell Physiology Research Group, University of Debrecen, 4032 Debrecen, Hungary
- Doctoral School of Molecular Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - László Szabó
- Department of Physiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
- ELKH-DE Cell Physiology Research Group, University of Debrecen, 4032 Debrecen, Hungary
- Doctoral School of Molecular Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Beatrix Dienes
- Department of Physiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Péter Szentesi
- Department of Physiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Ágnes Viktória Bana
- Department of Physiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Tibor Hajdú
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Endre Kókai
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Csaba Hegedűs
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - László Csernoch
- Department of Physiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
- ELKH-DE Cell Physiology Research Group, University of Debrecen, 4032 Debrecen, Hungary
| | - Mónika Gönczi
- Department of Physiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
- ELKH-DE Cell Physiology Research Group, University of Debrecen, 4032 Debrecen, Hungary
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9
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Imbir G, Trembecka-Wójciga K, Ozga P, Schirhagl R, Mzyk A. Elastic moduli of polyelectrolyte multilayer films regulate endothelium-blood interaction under dynamic conditions. Colloids Surf B Biointerfaces 2023; 225:113269. [PMID: 36963315 DOI: 10.1016/j.colsurfb.2023.113269] [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: 01/19/2023] [Revised: 03/02/2023] [Accepted: 03/13/2023] [Indexed: 03/18/2023]
Abstract
A broad spectrum of biomaterials has been explored in order to design cardiovascular implants of sufficient hemocompatibility. Most of them were extensively tested for the ability to facilitate repopulation by patient cells. It was shown that stiffness, surface roughness, or hydrophilicity of polyelectrolyte films have an impact on adhesion, proliferation, and differentiation of cells. At the same time, it is still unknown how these properties influence cell functionality and as a consequence interactions with blood components under dynamic conditions. In this study, we aimed to determine the impact of chemical cross-linking of Chitosan (Chi) and Chrondroitin Sulphate (CS) on endothelium-blood cross-talk. We have found that the morphology of the endothelium monolayer was not altered by changes in coating properties. However, free radical generation by endothelial cells varied depending on the elastic properties of the coating. Simultaneously, we have observed a significant decrease in the level of adhering and circulating active platelets as well as aggregates when the endothelium monolayer was formed on stiffer films than on the other coating variants. Moreover, the same type of films has promoted significantly higher adhesion of blood morphotic elements when they were not functionalized by endothelium. The observed changes in hemocompatibility indicate the importance of a design of coatings that will promote cellularization in vivo in a relatively short time and which will regulate cell function.
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Affiliation(s)
- Gabriela Imbir
- Institute of Metallurgy and Materials Science Polish Academy of Sciences, 25 Reymonta Street, 30-059 Cracow, Poland; Institute of Nuclear Physics Polish Academy of Sciences, 152 Radzikowski Street, 31-342 Cracow, Poland.
| | - Klaudia Trembecka-Wójciga
- Institute of Metallurgy and Materials Science Polish Academy of Sciences, 25 Reymonta Street, 30-059 Cracow, Poland
| | - Piotr Ozga
- Institute of Metallurgy and Materials Science Polish Academy of Sciences, 25 Reymonta Street, 30-059 Cracow, Poland
| | - Romana Schirhagl
- Groningen University, University Medical Center Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, the Netherlands
| | - Aldona Mzyk
- Institute of Metallurgy and Materials Science Polish Academy of Sciences, 25 Reymonta Street, 30-059 Cracow, Poland; Groningen University, University Medical Center Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, the Netherlands.
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10
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Aquaporins and Ion Channels as Dual Targets in the Design of Novel Glioblastoma Therapeutics to Limit Invasiveness. Cancers (Basel) 2023; 15:cancers15030849. [PMID: 36765806 PMCID: PMC9913334 DOI: 10.3390/cancers15030849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/20/2023] [Accepted: 01/28/2023] [Indexed: 01/31/2023] Open
Abstract
Current therapies for Glioblastoma multiforme (GBM) focus on eradicating primary tumors using radiotherapy, chemotherapy and surgical resection, but have limited success in controlling the invasive spread of glioma cells into a healthy brain, the major factor driving short survival times for patients post-diagnosis. Transcriptomic analyses of GBM biopsies reveal clusters of membrane signaling proteins that in combination serve as robust prognostic indicators, including aquaporins and ion channels, which are upregulated in GBM and implicated in enhanced glioblastoma motility. Accumulating evidence supports our proposal that the concurrent pharmacological targeting of selected subclasses of aquaporins and ion channels could impede glioblastoma invasiveness by impairing key cellular motility pathways. Optimal sets of channels to be selected as targets for combined therapies could be tailored to the GBM cancer subtype, taking advantage of differences in patterns of expression between channels that are characteristic of GBM subtypes, as well as distinguishing them from non-cancerous brain cells such as neurons and glia. Focusing agents on a unique channel fingerprint in GBM would further allow combined agents to be administered at near threshold doses, potentially reducing off-target toxicity. Adjunct therapies which confine GBM tumors to their primary sites during clinical treatments would offer profound advantages for treatment efficacy.
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11
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Harris AF, Lacombe J, Sanchez-Ballester NM, Victor S, Curran KAJ, Nordquist AR, Thomas B, Gu J, Veuthey JL, Soulairol I, Zenhausern F. Decellularized Spinach Biomaterials Support Physiologically Relevant Mechanical Cyclic Strain and Prompt a Stretch-Induced Cellular Response. ACS APPLIED BIO MATERIALS 2022; 5:5682-5692. [PMID: 36368008 DOI: 10.1021/acsabm.2c00721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Recently, decellularized plant biomaterials have been explored for their use as tissue engineered substitutes. Herein, we expanded upon the investigation of the mechanical properties of these materials to explore their elasticity as many anatomical areas of the body require biomechanical dynamism. We first constructed a device to secure the scaffold and induce a strain within the physiological range of the normal human adult lung during breathing (12-20 movements/min; 10-20% elongation). Results showed that decellularized spinach leaves can support cyclic strain for 24 h and displayed heterogeneous local strain values (7.76-15.88%) as well as a Poisson's ratio (0.12) similar to that of mammalian lungs (10.67-19.67%; 0.01), as opposed to an incompressible homogeneous standard polymer (such as PDMS (10.85-12.71%; 0.4)). Imaging and mechanical testing showed that the vegetal scaffold exhibited strain hardening but maintained its structural architecture and water retention capacity, suggesting an unaltered porosity. Interestingly, we also showed that cells seeded on the scaffold can also sense the mechanical strain as demonstrated by a nuclear reorientation perpendicular to strain direction (63.3° compared to 41.2° for nonstretched cells), a nuclear location of YAP and increased expression of YAP target genes, a high cytoplasmic calcium level, and an elevated expression level of collagen genes (COL1A1, COL3A1, COL4A1, and COL6A) with an increased collagen secretion at the protein level. Taken together, these data demonstrated that decellularized plant leaf tissues have an inherent elastic property similar to that found in the mammalian system to which cells can sense and respond.
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Affiliation(s)
- Ashlee F Harris
- Center for Applied NanoBioscience and Medicine, College of Medicine Phoenix, University of Arizona, 475 North 5th Street, Phoenix, Arizona85004, United States
| | - Jerome Lacombe
- Center for Applied NanoBioscience and Medicine, College of Medicine Phoenix, University of Arizona, 475 North 5th Street, Phoenix, Arizona85004, United States.,Department of Basic Medical Sciences, College of Medicine Phoenix, University of Arizona, 425 N 5th St., Phoenix, Arizona85004, United States
| | - Noelia M Sanchez-Ballester
- ICGM, CNRS, ENSCM, University Montpellier, 34000Montpellier, France.,Department of Pharmacy, Nîmes University Hospital, 30900Nîmes, France
| | - Shaun Victor
- Center for Applied NanoBioscience and Medicine, College of Medicine Phoenix, University of Arizona, 475 North 5th Street, Phoenix, Arizona85004, United States
| | - Killian A J Curran
- School of Pharmaceutical Sciences, University of Geneva, Quai Ernest-Ansermet, 1211 Genève 4, Geneva, Switzerland
| | - Alan R Nordquist
- Center for Applied NanoBioscience and Medicine, College of Medicine Phoenix, University of Arizona, 475 North 5th Street, Phoenix, Arizona85004, United States
| | - Baiju Thomas
- Center for Applied NanoBioscience and Medicine, College of Medicine Phoenix, University of Arizona, 475 North 5th Street, Phoenix, Arizona85004, United States
| | - Jian Gu
- Center for Applied NanoBioscience and Medicine, College of Medicine Phoenix, University of Arizona, 475 North 5th Street, Phoenix, Arizona85004, United States.,Department of Basic Medical Sciences, College of Medicine Phoenix, University of Arizona, 425 N 5th St., Phoenix, Arizona85004, United States
| | - Jean-Luc Veuthey
- School of Pharmaceutical Sciences, University of Geneva, Quai Ernest-Ansermet, 1211 Genève 4, Geneva, Switzerland
| | - Ian Soulairol
- ICGM, CNRS, ENSCM, University Montpellier, 34000Montpellier, France.,Department of Pharmacy, Nîmes University Hospital, 30900Nîmes, France
| | - Frederic Zenhausern
- Center for Applied NanoBioscience and Medicine, College of Medicine Phoenix, University of Arizona, 475 North 5th Street, Phoenix, Arizona85004, United States.,Department of Basic Medical Sciences, College of Medicine Phoenix, University of Arizona, 425 N 5th St., Phoenix, Arizona85004, United States.,School of Pharmaceutical Sciences, University of Geneva, Quai Ernest-Ansermet, 1211 Genève 4, Geneva, Switzerland.,Department of Biomedical Engineering, College of Engineering, The University of Arizona, Tucson, Arizona85721, United States
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12
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Braidotti N, Chen SN, Long CS, Cojoc D, Sbaizero O. Piezo1 Channel as a Potential Target for Hindering Cardiac Fibrotic Remodeling. Int J Mol Sci 2022; 23:8065. [PMID: 35897650 PMCID: PMC9330509 DOI: 10.3390/ijms23158065] [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: 06/29/2022] [Revised: 07/19/2022] [Accepted: 07/20/2022] [Indexed: 02/01/2023] Open
Abstract
Fibrotic tissues share many common features with neoplasms where there is an increased stiffness of the extracellular matrix (ECM). In this review, we present recent discoveries related to the role of the mechanosensitive ion channel Piezo1 in several diseases, especially in regulating tumor progression, and how this can be compared with cardiac mechanobiology. Based on recent findings, Piezo1 could be upregulated in cardiac fibroblasts as a consequence of the mechanical stress and pro-inflammatory stimuli that occurs after myocardial injury, and its increased activity could be responsible for a positive feedback loop that leads to fibrosis progression. The increased Piezo1-mediated calcium flow may play an important role in cytoskeleton reorganization since it induces actin stress fibers formation, a well-known characteristic of fibroblast transdifferentiation into the activated myofibroblast. Moreover, Piezo1 activity stimulates ECM and cytokines production, which in turn promotes the phenoconversion of adjacent fibroblasts into new myofibroblasts, enhancing the invasive character. Thus, by assuming the Piezo1 involvement in the activation of intrinsic fibroblasts, recruitment of new myofibroblasts, and uncontrolled excessive ECM production, a new approach to blocking the fibrotic progression can be predicted. Therefore, targeted therapies against Piezo1 could also be beneficial for cardiac fibrosis.
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Affiliation(s)
- Nicoletta Braidotti
- Department of Physics, University of Trieste, Via A. Valerio 2, 34127 Trieste, Italy;
- Institute of Materials, National Research Council of Italy (CNR-IOM), Area Science Park Basovizza, Strada Statale 14, Km 163,5, 34149 Trieste, Italy;
| | - Suet Nee Chen
- CU-Cardiovascular Institute, University of Colorado Anschutz Medical Campus, 12700 East 19th Ave., Aurora, CO 80045, USA;
| | - Carlin S. Long
- Center for the Prevention of Heart and Vascular Disease, University of California, 555 Mission Bay Blvd South, Rm 352K, San Francisco, CA 94143, USA;
| | - Dan Cojoc
- Institute of Materials, National Research Council of Italy (CNR-IOM), Area Science Park Basovizza, Strada Statale 14, Km 163,5, 34149 Trieste, Italy;
| | - Orfeo Sbaizero
- Department of Engineering and Architecture, University of Trieste, Via A. Valerio 6/A, 34127 Trieste, Italy
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13
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Calcium sparks enhance the tissue fluidity within epithelial layers and promote apical extrusion of transformed cells. Cell Rep 2022; 40:111078. [PMID: 35830802 DOI: 10.1016/j.celrep.2022.111078] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 05/13/2022] [Accepted: 06/20/2022] [Indexed: 11/22/2022] Open
Abstract
In vertebrates, newly emerging transformed cells are often apically extruded from epithelial layers through cell competition with surrounding normal epithelial cells. However, the underlying molecular mechanism remains elusive. Here, using phospho-SILAC screening, we show that phosphorylation of AHNAK2 is elevated in normal cells neighboring RasV12 cells soon after the induction of RasV12 expression, which is mediated by calcium-dependent protein kinase C. In addition, transient upsurges of intracellular calcium, which we call calcium sparks, frequently occur in normal cells neighboring RasV12 cells, which are mediated by mechanosensitive calcium channel TRPC1 upon membrane stretching. Calcium sparks then enhance cell movements of both normal and RasV12 cells through phosphorylation of AHNAK2 and promote apical extrusion. Moreover, comparable calcium sparks positively regulate apical extrusion of RasV12-transformed cells in zebrafish larvae as well. Hence, calcium sparks play a crucial role in the elimination of transformed cells at the early phase of cell competition.
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14
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Miles L, Powell J, Kozak C, Song Y. Mechanosensitive Ion Channels, Axonal Growth, and Regeneration. Neuroscientist 2022:10738584221088575. [PMID: 35414308 PMCID: PMC9556659 DOI: 10.1177/10738584221088575] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Cells sense and respond to mechanical stimuli by converting those stimuli into biological signals, a process known as mechanotransduction. Mechanotransduction is essential in diverse cellular functions, including tissue development, touch sensitivity, pain, and neuronal pathfinding. In the search for key players of mechanotransduction, several families of ion channels were identified as being mechanosensitive and were demonstrated to be activated directly by mechanical forces in both the membrane bilayer and the cytoskeleton. More recently, Piezo ion channels were discovered as a bona fide mechanosensitive ion channel, and its characterization led to a cascade of research that revealed the diverse functions of Piezo proteins and, in particular, their involvement in neuronal repair.
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Affiliation(s)
- Leann Miles
- The Graduate Group in Biochemistry and Molecular Biophysics, University of Pennsylvania, Philadelphia, PA, USA
| | - Jackson Powell
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Casey Kozak
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Yuanquan Song
- The Graduate Group in Biochemistry and Molecular Biophysics, University of Pennsylvania, Philadelphia, PA, USA.,Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA.,Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, USA
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15
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Wang AY, Coelho NM, Arora PD, Wang Y, Eymael D, Ji C, Wang Q, Lee W, Xu J, Kapus A, Carneiro KMM, McCulloch CA. DDR1 associates with TRPV4 in cell-matrix adhesions to enable calcium-regulated myosin activity and collagen compaction. J Cell Physiol 2022; 237:2451-2468. [PMID: 35150133 DOI: 10.1002/jcp.30696] [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: 06/24/2021] [Revised: 01/10/2022] [Accepted: 01/27/2022] [Indexed: 11/10/2022]
Abstract
Tissue fibrosis manifests as excessive deposition of compacted, highly aligned collagen fibrils, which interfere with organ structure and function. Cells in collagen-rich lesions often exhibit marked overexpression of discoidin domain receptor 1 (DDR1), which is linked to increased collagen compaction through the association of DDR1 with the Ca2+ -dependent nonmuscle myosin IIA (NMIIA). We examined the functional relationship between DDR1 and the transient receptor potential vanilloid type 4 (TRPV4) channel, a Ca2+ -permeable ion channel that is implicated in collagen compaction. Fibroblasts expressing high levels of DDR1 were used to model cells in lesions with collagen compaction. In these cells, the expression of the β1 integrin was deleted to simplify studies of DDR1 function. Compared with DDR1 wild-type cells, high DDR1 expression was associated with increased Ca2+ influx through TRPV4, enrichment of TRPV4 in collagen adhesions, and enhanced contractile activity mediated by NMIIA. At cell adhesion sites to collagen, DDR1 associated with TRPV4, which enhanced DDR1-mediated collagen alignment and compaction. We conclude that DDR1 regulates Ca2+ influx through the TRPV4 channel to promote critical, DDR1-mediated processes that are important in lesions with collagen compaction and alignment.
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Affiliation(s)
- Andrew Y Wang
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada.,Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Nuno M Coelho
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Pamma D Arora
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Yongqiang Wang
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Denise Eymael
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada.,Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Chenfan Ji
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada.,Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Qin Wang
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Wilson Lee
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Jessica Xu
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Andras Kapus
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital and Department of Surgery, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Karina M M Carneiro
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada.,Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Christopher A McCulloch
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada.,Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
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16
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Debir B, Meaney C, Kohandel M, Unlu MB. The role of calcium oscillations in the phenotype selection in endothelial cells. Sci Rep 2021; 11:23781. [PMID: 34893636 PMCID: PMC8664853 DOI: 10.1038/s41598-021-02720-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 11/07/2021] [Indexed: 11/10/2022] Open
Abstract
Angiogenesis is an important process in the formation and maintenance of tissues which is driven by a complex system of intracellular and intercellular signaling mechanisms. Endothelial cells taking part in early angiogenesis must select their phenotype as either a tip cells (leading, migratory) or a stalk cells (following). Recent experiments have demonstrated that rapid calcium oscillations within active cells characterize this phenotype selection process and that these oscillations play a necessary role in governing phenotype selection and eventual vessel architecture. In this work, we develop a mathematical model capable of describing these oscillations and their role in phenotype selection then use it to improve our understanding of the biological mechanisms at play. We developed a model based on two previously published and experimentally validated mathematical models of calcium and angiogenesis then use our resulting model to simulate various multi-cell scenarios. We are able to capture essential calcium oscillation dynamics and intercellular communication between neighboring cells. The results of our model show that although the late DLL4 (a transmembrane protein that activates Notch pathway) levels of a cell are connected with its initial IP3 (Inositol 1,4,5-trisphosphate) level, cell-to-cell communication determines its eventual phenotype.
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Affiliation(s)
- Birses Debir
- Department of Physics, Bogazici University, 34342, Istanbul, Turkey.
| | - Cameron Meaney
- Department of Applied Mathematics, University of Waterloo, Waterloo, ON, Canada
| | - Mohammad Kohandel
- Department of Applied Mathematics, University of Waterloo, Waterloo, ON, Canada
| | - M Burcin Unlu
- Department of Physics, Bogazici University, 34342, Istanbul, Turkey
- Hokkaido University, Global Station for Quantum Medical Science and Engineering, Global Institution for Collaborative Research and Education (GI-CoRE), Sapporo, 060-8648, Japan
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17
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Holt JR, Zeng WZ, Evans EL, Woo SH, Ma S, Abuwarda H, Loud M, Patapoutian A, Pathak MM. Spatiotemporal dynamics of PIEZO1 localization controls keratinocyte migration during wound healing. eLife 2021; 10:65415. [PMID: 34569935 PMCID: PMC8577841 DOI: 10.7554/elife.65415] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 09/24/2021] [Indexed: 12/17/2022] Open
Abstract
Keratinocytes, the predominant cell type of the epidermis, migrate to reinstate the epithelial barrier during wound healing. Mechanical cues are known to regulate keratinocyte re-epithelialization and wound healing; however, the underlying molecular transducers and biophysical mechanisms remain elusive. Here, we show through molecular, cellular, and organismal studies that the mechanically activated ion channel PIEZO1 regulates keratinocyte migration and wound healing. Epidermal-specific Piezo1 knockout mice exhibited faster wound closure while gain-of-function mice displayed slower wound closure compared to littermate controls. By imaging the spatiotemporal localization dynamics of endogenous PIEZO1 channels, we find that channel enrichment at some regions of the wound edge induces a localized cellular retraction that slows keratinocyte collective migration. In migrating single keratinocytes, PIEZO1 is enriched at the rear of the cell, where maximal retraction occurs, and we find that chemical activation of PIEZO1 enhances retraction during single as well as collective migration. Our findings uncover novel molecular mechanisms underlying single and collective keratinocyte migration that may suggest a potential pharmacological target for wound treatment. More broadly, we show that nanoscale spatiotemporal dynamics of Piezo1 channels can control tissue-scale events, a finding with implications beyond wound healing to processes as diverse as development, homeostasis, disease, and repair.
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Affiliation(s)
- Jesse R Holt
- Departmentof Physiology & Biophysics, UC Irvine, Irvine, United States.,Sue and Bill Gross Stem Cell Research Center, UC Irvine, Irvine, United States.,Center for Complex Biological Systems, UC Irvine, Irvine, United States
| | - Wei-Zheng Zeng
- Howard Hughes Medical Institute, Department of Neuroscience, The Scripps Research Institute, La Jolla, United States
| | - Elizabeth L Evans
- Departmentof Physiology & Biophysics, UC Irvine, Irvine, United States.,Sue and Bill Gross Stem Cell Research Center, UC Irvine, Irvine, United States
| | - Seung-Hyun Woo
- Howard Hughes Medical Institute, Department of Neuroscience, The Scripps Research Institute, La Jolla, United States
| | - Shang Ma
- Howard Hughes Medical Institute, Department of Neuroscience, The Scripps Research Institute, La Jolla, United States
| | - Hamid Abuwarda
- Departmentof Physiology & Biophysics, UC Irvine, Irvine, United States.,Sue and Bill Gross Stem Cell Research Center, UC Irvine, Irvine, United States
| | - Meaghan Loud
- Howard Hughes Medical Institute, Department of Neuroscience, The Scripps Research Institute, La Jolla, United States
| | - Ardem Patapoutian
- Howard Hughes Medical Institute, Department of Neuroscience, The Scripps Research Institute, La Jolla, United States
| | - Medha M Pathak
- Departmentof Physiology & Biophysics, UC Irvine, Irvine, United States.,Sue and Bill Gross Stem Cell Research Center, UC Irvine, Irvine, United States.,Center for Complex Biological Systems, UC Irvine, Irvine, United States.,Department of Biomedical Engineering, UC Irvine, Irvine, United States
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18
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Naffa R, Padányi R, Ignácz A, Hegyi Z, Jezsó B, Tóth S, Varga K, Homolya L, Hegedűs L, Schlett K, Enyedi A. The Plasma Membrane Ca 2+ Pump PMCA4b Regulates Melanoma Cell Migration through Remodeling of the Actin Cytoskeleton. Cancers (Basel) 2021; 13:cancers13061354. [PMID: 33802790 PMCID: PMC8002435 DOI: 10.3390/cancers13061354] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 03/08/2021] [Accepted: 03/14/2021] [Indexed: 02/07/2023] Open
Abstract
Simple Summary Earlier we demonstrated that the plasma membrane Ca2+ pump PMCA4b inhibits migration and metastatic activity of BRAF mutant melanoma cells, however, the exact mechanism has not been fully understood. Here we demonstrate that PMCA4b acted through actin cytoskeleton remodeling in generating a low migratory melanoma cell phenotype resulting in increased cell–cell connections, lamellipodia and stress fiber formation. Both proper trafficking and calcium transporting activity of the pump were essential to complete these tasks indicating that controlling Ca2+ concentration levels at specific plasma membrane locations such as the cell front played a role. Our findings suggest that PMCA4b downregulation is likely one of the mechanisms that leads to the perturbed cancer cell cytoskeleton organization resulting in enhanced melanoma cell migration and metastasis. Abstract We demonstrated that the plasma membrane Ca2+ ATPase PMCA4b inhibits migration and metastatic activity of BRAF mutant melanoma cells. Actin dynamics are essential for cells to move, invade and metastasize, therefore, we hypothesized that PMCA4b affected cell migration through remodeling of the actin cytoskeleton. We found that expression of PMCA4b in A375 BRAF mutant melanoma cells induced a profound change in cell shape, cell culture morphology, and displayed a polarized migratory character. Along with these changes the cells became more rounded with increased cell–cell connections, lamellipodia and stress fiber formation. Silencing PMCA4b in MCF-7 breast cancer cells had a similar effect, resulting in a dramatic loss of stress fibers. In addition, the PMCA4b expressing A375 cells maintained front-to-rear Ca2+ concentration gradient with the actin severing protein cofilin localizing to the lamellipodia, and preserved the integrity of the actin cytoskeleton from a destructive Ca2+ overload. We showed that both PMCA4b activity and trafficking were essential for the observed morphology and motility changes. In conclusion, our data suggest that PMCA4b plays a critical role in adopting front-to-rear polarity in a normally spindle-shaped cell type through F-actin rearrangement resulting in a less aggressive melanoma cell phenotype.
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Affiliation(s)
- Randa Naffa
- Department of Transfusiology, Semmelweis University, H-1089 Budapest, Hungary; (R.N.); (S.T.)
| | - Rita Padányi
- Department of Biophysics and Radiation Biology, Semmelweis University, H-1094 Budapest, Hungary;
| | - Attila Ignácz
- Department of Physiology and Neurobiology, Eötvös Loránd University, H-1117 Budapest, Hungary; (A.I.); (K.S.)
| | - Zoltán Hegyi
- Institute of Enzymology, Research Centre for Natural Sciences, Magyar Tudosok krt.2, H-1117 Budapest, Hungary; (Z.H.); (B.J.); (L.H.)
| | - Bálint Jezsó
- Institute of Enzymology, Research Centre for Natural Sciences, Magyar Tudosok krt.2, H-1117 Budapest, Hungary; (Z.H.); (B.J.); (L.H.)
| | - Sarolta Tóth
- Department of Transfusiology, Semmelweis University, H-1089 Budapest, Hungary; (R.N.); (S.T.)
- Department of Anatomy, Cell and Developmental Biology, Eötvös Loránd University, H-1117 Budapest, Hungary
| | | | - László Homolya
- Institute of Enzymology, Research Centre for Natural Sciences, Magyar Tudosok krt.2, H-1117 Budapest, Hungary; (Z.H.); (B.J.); (L.H.)
| | - Luca Hegedűs
- Department of Thoracic Surgery, Ruhrlandklinik, University Clinic Essen, 45239 Essen, Germany;
| | - Katalin Schlett
- Department of Physiology and Neurobiology, Eötvös Loránd University, H-1117 Budapest, Hungary; (A.I.); (K.S.)
| | - Agnes Enyedi
- Department of Transfusiology, Semmelweis University, H-1089 Budapest, Hungary; (R.N.); (S.T.)
- Correspondence:
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19
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Bressan C, Saghatelyan A. Intrinsic Mechanisms Regulating Neuronal Migration in the Postnatal Brain. Front Cell Neurosci 2021; 14:620379. [PMID: 33519385 PMCID: PMC7838331 DOI: 10.3389/fncel.2020.620379] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 12/08/2020] [Indexed: 01/19/2023] Open
Abstract
Neuronal migration is a fundamental brain development process that allows cells to move from their birthplaces to their sites of integration. Although neuronal migration largely ceases during embryonic and early postnatal development, neuroblasts continue to be produced and to migrate to a few regions of the adult brain such as the dentate gyrus and the subventricular zone (SVZ). In the SVZ, a large number of neuroblasts migrate into the olfactory bulb (OB) along the rostral migratory stream (RMS). Neuroblasts migrate in chains in a tightly organized micro-environment composed of astrocytes that ensheath the chains of neuroblasts and regulate their migration; the blood vessels that are used by neuroblasts as a physical scaffold and a source of molecular factors; and axons that modulate neuronal migration. In addition to diverse sets of extrinsic micro-environmental cues, long-distance neuronal migration involves a number of intrinsic mechanisms, including membrane and cytoskeleton remodeling, Ca2+ signaling, mitochondria dynamics, energy consumption, and autophagy. All these mechanisms are required to cope with the different micro-environment signals and maintain cellular homeostasis in order to sustain the proper dynamics of migrating neuroblasts and their faithful arrival in the target regions. Neuroblasts in the postnatal brain not only migrate into the OB but may also deviate from their normal path to migrate to a site of injury induced by a stroke or by certain neurodegenerative disorders. In this review, we will focus on the intrinsic mechanisms that regulate long-distance neuroblast migration in the adult brain and on how these pathways may be modulated to control the recruitment of neuroblasts to damaged/diseased brain areas.
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Affiliation(s)
- Cedric Bressan
- CERVO Brain Research Center, Quebec City, QC, Canada.,Department of Psychiatry and Neuroscience, Université Laval, Quebec City, QC, Canada
| | - Armen Saghatelyan
- CERVO Brain Research Center, Quebec City, QC, Canada.,Department of Psychiatry and Neuroscience, Université Laval, Quebec City, QC, Canada
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20
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Acheva A, Kärki T, Schaible N, Krishnan R, Tojkander S. Adipokine Leptin Co-operates With Mechanosensitive Ca 2 +-Channels and Triggers Actomyosin-Mediated Motility of Breast Epithelial Cells. Front Cell Dev Biol 2021; 8:607038. [PMID: 33490070 PMCID: PMC7815691 DOI: 10.3389/fcell.2020.607038] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 12/07/2020] [Indexed: 12/24/2022] Open
Abstract
In postmenopausal women, a major risk factor for the development of breast cancer is obesity. In particular, the adipose tissue-derived adipokine leptin has been strongly linked to tumor cell proliferation, migration, and metastasis, but the underlying mechanisms remain unclear. Here we show that treatment of normal mammary epithelial cells with leptin induces EMT-like features characterized by higher cellular migration speeds, loss of structural ordering of 3D-mammo spheres, and enhancement of epithelial traction forces. Mechanistically, leptin triggers the phosphorylation of myosin light chain kinase-2 (MLC-2) through the interdependent activity of leptin receptor and Ca2+ channels. These data provide evidence that leptin-activated leptin receptors, in co-operation with mechanosensitive Ca2+ channels, play a role in the development of breast carcinomas through the regulation of actomyosin dynamics.
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Affiliation(s)
- Anna Acheva
- Section of Pathology, Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
| | - Tytti Kärki
- Department of Applied Physics, School of Science, Aalto University, Espoo, Finland
| | - Niccole Schaible
- Beth Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
| | - Ramaswamy Krishnan
- Beth Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
| | - Sari Tojkander
- Section of Pathology, Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
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21
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Chalklen T, Jing Q, Kar-Narayan S. Biosensors Based on Mechanical and Electrical Detection Techniques. SENSORS (BASEL, SWITZERLAND) 2020; 20:E5605. [PMID: 33007906 PMCID: PMC7584018 DOI: 10.3390/s20195605] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 09/18/2020] [Accepted: 09/23/2020] [Indexed: 12/20/2022]
Abstract
Biosensors are powerful analytical tools for biology and biomedicine, with applications ranging from drug discovery to medical diagnostics, food safety, and agricultural and environmental monitoring. Typically, biological recognition receptors, such as enzymes, antibodies, and nucleic acids, are immobilized on a surface, and used to interact with one or more specific analytes to produce a physical or chemical change, which can be captured and converted to an optical or electrical signal by a transducer. However, many existing biosensing methods rely on chemical, electrochemical and optical methods of identification and detection of specific targets, and are often: complex, expensive, time consuming, suffer from a lack of portability, or may require centralised testing by qualified personnel. Given the general dependence of most optical and electrochemical techniques on labelling molecules, this review will instead focus on mechanical and electrical detection techniques that can provide information on a broad range of species without the requirement of labelling. These techniques are often able to provide data in real time, with good temporal sensitivity. This review will cover the advances in the development of mechanical and electrical biosensors, highlighting the challenges and opportunities therein.
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Affiliation(s)
| | - Qingshen Jing
- Department of Materials Science, University of Cambridge, Cambridge CB3 0FS, UK;
| | - Sohini Kar-Narayan
- Department of Materials Science, University of Cambridge, Cambridge CB3 0FS, UK;
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22
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Enomoto U, Imashiro C, Takemura K. Collective cell migration of fibroblasts is affected by horizontal vibration of the cell culture dish. Eng Life Sci 2020; 20:402-411. [PMID: 32944015 PMCID: PMC7481772 DOI: 10.1002/elsc.202000013] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 05/25/2020] [Accepted: 06/18/2020] [Indexed: 01/08/2023] Open
Abstract
Regulating the collective migration of cells is an important issue in bioengineering. Enhancing or suppressing cell migration and controlling the migration direction is useful for various physiological phenomena such as wound healing. Several methods of migration regulation based on different mechanical stimuli have been reported. While vibrational stimuli, such as sound waves, show promise for regulating migration, the effect of the vibration direction on collective cell migration has not been studied in depth. Therefore, we fabricated a vibrating system that can apply horizontal vibration to a cell culture dish. Here, we evaluated the effect of the vibration direction on the collective migration of fibroblasts in a wound model comprising two culture areas separated by a gap. Results showed that the vibration direction affects the cell migration distance: vibration orthogonal to the gap enhances the collective cell migration distance while vibration parallel to the gap suppresses it. Results also showed that conditions leading to enhanced migration distance were also associated with elevated glucose consumption. Furthermore, under conditions promoting cell migration, the cell nuclei become elongated and oriented orthogonal to the gap. In contrast, under conditions that reduce the migration distance, cell nuclei were oriented to the direction parallel to the gap.
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Affiliation(s)
- Umi Enomoto
- School of Science for Open and Environmental SystemsGraduate School of Science and TechnologyKeio UniversityYokohamaKanagawaJapan
| | - Chikahiro Imashiro
- Department of Mechanical EngineeringKeio UniversityYokohamaKanagawaJapan
- Institute of Advanced Biomedical Engineering and ScienceTokyo Women's Medical UniversityTokyoJapan
| | - Kenjiro Takemura
- Department of Mechanical EngineeringKeio UniversityYokohamaKanagawaJapan
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23
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Borggaard XG, Pirapaharan DC, Delaissé JM, Søe K. Osteoclasts' Ability to Generate Trenches Rather Than Pits Depends on High Levels of Active Cathepsin K and Efficient Clearance of Resorption Products. Int J Mol Sci 2020; 21:ijms21165924. [PMID: 32824687 PMCID: PMC7460581 DOI: 10.3390/ijms21165924] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/12/2020] [Accepted: 08/14/2020] [Indexed: 12/19/2022] Open
Abstract
Until recently, it was well-accepted that osteoclasts resorb bone according to the resorption cycle model. This model is based on the assumption that osteoclasts are immobile during bone erosion, allowing the actin ring to be firmly attached and thereby provide an effective seal encircling the resorptive compartment. However, through time-lapse, it was recently documented that osteoclasts making elongated resorption cavities and trenches move across the bone surface while efficiently resorbing bone. However, it was also shown that osteoclasts making rounded cavities and pits indeed resorb bone while they are immobile. Only little is known about what distinguishes these two different resorption modes. This is of both basic and clinical interest because these resorption modes are differently sensitive to drugs and are affected by the gender as well as age of the donor. In the present manuscript we show that: 1. levels of active cathepsin K determine the switch from pit to trench mode; 2. pit and trench mode depend on clathrin-mediated endocytosis; and 3. a mechanism integrating release of resorption products and membrane/integrin recycling is required for prolongation of trench mode. Our study therefore contributes to an improved understanding of the molecular and cellular determinants for the two osteoclastic bone resorption modes.
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Affiliation(s)
- Xenia G. Borggaard
- Department of Clinical Cell Biology, Vejle Hospital/Lillebaelt Hospital, 7100 Vejle, Denmark; (D.C.P.); (J.-M.D.)
- Department of Regional Health Research, University of Southern Denmark, 7100 Vejle, Denmark
- Clinical Cell Biology, Department of Pathology, Odense University Hospital, 5000 Odense C, Denmark
- Clinical Cell Biology, Pathology Research Unit, Department of Clinical Research, University of Southern Denmark, 5000 Odense C, Denmark
- Clinical Cell Biology, Department of Molecular Medicine, University of Southern Denmark, 5000 Odense C, Denmark
- Correspondence: (X.G.B.); (K.S.); Tel.: +45-65413190 (K.S.)
| | - Dinisha C. Pirapaharan
- Department of Clinical Cell Biology, Vejle Hospital/Lillebaelt Hospital, 7100 Vejle, Denmark; (D.C.P.); (J.-M.D.)
- Department of Regional Health Research, University of Southern Denmark, 7100 Vejle, Denmark
| | - Jean-Marie Delaissé
- Department of Clinical Cell Biology, Vejle Hospital/Lillebaelt Hospital, 7100 Vejle, Denmark; (D.C.P.); (J.-M.D.)
- Department of Regional Health Research, University of Southern Denmark, 7100 Vejle, Denmark
- Clinical Cell Biology, Department of Pathology, Odense University Hospital, 5000 Odense C, Denmark
- Clinical Cell Biology, Pathology Research Unit, Department of Clinical Research, University of Southern Denmark, 5000 Odense C, Denmark
- Clinical Cell Biology, Department of Molecular Medicine, University of Southern Denmark, 5000 Odense C, Denmark
| | - Kent Søe
- Department of Clinical Cell Biology, Vejle Hospital/Lillebaelt Hospital, 7100 Vejle, Denmark; (D.C.P.); (J.-M.D.)
- Department of Regional Health Research, University of Southern Denmark, 7100 Vejle, Denmark
- Clinical Cell Biology, Department of Pathology, Odense University Hospital, 5000 Odense C, Denmark
- Clinical Cell Biology, Pathology Research Unit, Department of Clinical Research, University of Southern Denmark, 5000 Odense C, Denmark
- Clinical Cell Biology, Department of Molecular Medicine, University of Southern Denmark, 5000 Odense C, Denmark
- Correspondence: (X.G.B.); (K.S.); Tel.: +45-65413190 (K.S.)
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Fine Tuning of Calcium Constitutive Entry by Optogenetically-Controlled Membrane Polarization: Impact on Cell Migration. Cells 2020; 9:cells9071684. [PMID: 32668787 PMCID: PMC7408270 DOI: 10.3390/cells9071684] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/06/2020] [Accepted: 07/08/2020] [Indexed: 11/16/2022] Open
Abstract
Anomalies in constitutive calcium entry (CCE) have been commonly attributed to cell dysfunction in pathological conditions such as cancer. Calcium influxes of this type rely on channels, such as transient receptor potential (TRP) channels, to be constitutively opened and strongly depend on membrane potential and a calcium driving force. We developed an optogenetic approach based on the expression of the halorhodopsin chloride pump to study CCE in non-excitable cells. Using C2C12 cells, we found that halorhodopsin can be used to achieve a finely tuned control of membrane polarization. Escalating the membrane polarization by incremental changes in light led to a concomitant increase in CCE through transient receptor potential vanilloid 2 (TRPV2) channels. Moreover, light-induced calcium entry through TRPV2 channels promoted cell migration. Our study shows for the first time that by modulating CCE and related physiological responses, such as cell motility, halorhodopsin serves as a potentially powerful tool that could open new avenues for the study of CCE and associated cellular behaviors.
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Noyer L, Lemonnier L, Mariot P, Gkika D. Partners in Crime: Towards New Ways of Targeting Calcium Channels. Int J Mol Sci 2019; 20:ijms20246344. [PMID: 31888223 PMCID: PMC6940757 DOI: 10.3390/ijms20246344] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 12/05/2019] [Accepted: 12/13/2019] [Indexed: 12/16/2022] Open
Abstract
The characterization of calcium channel interactome in the last decades opened a new way of perceiving ion channel function and regulation. Partner proteins of ion channels can now be considered as major components of the calcium homeostatic mechanisms, while the reinforcement or disruption of their interaction with the channel units now represents an attractive target in research and therapeutics. In this review we will focus on the targeting of calcium channel partner proteins in order to act on the channel activity, and on its consequences for cell and organism physiology. Given the recent advances in the partner proteins’ identification, characterization, as well as in the resolution of their interaction domain structures, we will develop the latest findings on the interacting proteins of the following channels: voltage-dependent calcium channels, transient receptor potential and ORAI channels, and inositol 1,4,5-trisphosphate receptor.
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Affiliation(s)
- Lucile Noyer
- Univ. Lille, Inserm, U1003-PHYCEL-Physiologie Cellulaire, F-59000 Lille, France; (L.N.); (L.L.); (P.M.)
- Laboratory of Excellence, Ion Channels Science and Therapeutics, Université de Lille, 59655 Villeneuve d’Ascq, France
| | - Loic Lemonnier
- Univ. Lille, Inserm, U1003-PHYCEL-Physiologie Cellulaire, F-59000 Lille, France; (L.N.); (L.L.); (P.M.)
- Laboratory of Excellence, Ion Channels Science and Therapeutics, Université de Lille, 59655 Villeneuve d’Ascq, France
| | - Pascal Mariot
- Univ. Lille, Inserm, U1003-PHYCEL-Physiologie Cellulaire, F-59000 Lille, France; (L.N.); (L.L.); (P.M.)
- Laboratory of Excellence, Ion Channels Science and Therapeutics, Université de Lille, 59655 Villeneuve d’Ascq, France
| | - Dimitra Gkika
- Univ. Lille, Inserm, U1003-PHYCEL-Physiologie Cellulaire, F-59000 Lille, France; (L.N.); (L.L.); (P.M.)
- Laboratory of Excellence, Ion Channels Science and Therapeutics, Université de Lille, 59655 Villeneuve d’Ascq, France
- Correspondence: ; Tél.: +33-(0)3-2043-6838
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Tajbakhsh A, Kovanen PT, Rezaee M, Banach M, Sahebkar A. Ca 2+ Flux: Searching for a Role in Efferocytosis of Apoptotic Cells in Atherosclerosis. J Clin Med 2019; 8:jcm8122047. [PMID: 31766552 PMCID: PMC6947386 DOI: 10.3390/jcm8122047] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 11/09/2019] [Accepted: 11/11/2019] [Indexed: 12/13/2022] Open
Abstract
In atherosclerosis, macrophages in the arterial wall ingest plasma lipoprotein-derived lipids and become lipid-filled foam cells with a limited lifespan. Thus, efficient removal of apoptotic foam cells by efferocytic macrophages is vital to preventing the dying foam cells from forming a large necrotic lipid core, which, otherwise, would render the atherosclerotic plaque vulnerable to rupture and would cause clinical complications. Ca2+ plays a role in macrophage migration, survival, and foam cell generation. Importantly, in efferocytic macrophages, Ca2+ induces actin polymerization, thereby promoting the formation of a phagocytic cup necessary for efferocytosis. Moreover, in the efferocytic macrophages, Ca2+ enhances the secretion of anti-inflammatory cytokines. Various Ca2+ antagonists have been seminal for the demonstration of the role of Ca2+ in the multiple steps of efferocytosis by macrophages. Moreover, in vitro and in vivo experiments and clinical investigations have revealed the capability of Ca2+ antagonists in attenuating the development of atherosclerotic plaques by interfering with the deposition of lipids in macrophages and by reducing plaque calcification. However, the regulation of cellular Ca2+ fluxes in the processes of efferocytic clearance of apoptotic foam cells and in the extracellular calcification in atherosclerosis remains unknown. Here, we attempted to unravel the molecular links between Ca2+ and efferocytosis in atherosclerosis and to evaluate cellular Ca2+ fluxes as potential treatment targets in atherosclerotic cardiovascular diseases.
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Affiliation(s)
- Amir Tajbakhsh
- Halal Research Center of IRI, FDA, Tehran, Iran
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Mahdi Rezaee
- Department of Medical Biotechnology, School of Medicine, Mashhad University of Medical Sciences, Mashhad 9177948, Iran
| | - Maciej Banach
- Department of Hypertension, WAM University Hospital in Lodz, Medical University of Lodz, Zeromskiego 113, 90-549 Lodz, Poland
- Polish Mother’s Memorial Hospital Research Institute (PMMHRI), 93-338 Lodz, Poland
| | - Amirhossein Sahebkar
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
- Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- School of Pharmacy, Mashhad University of Medical Sciences, Mashhad 9177948, Iran
- Correspondence: or ; Tel.: +98-51-1800-2288; Fax: +98-51-1800-2287
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Madreiter-Sokolowski CT, Ramadani-Muja J, Ziomek G, Burgstaller S, Bischof H, Koshenov Z, Gottschalk B, Malli R, Graier WF. Tracking intra- and inter-organelle signaling of mitochondria. FEBS J 2019; 286:4378-4401. [PMID: 31661602 PMCID: PMC6899612 DOI: 10.1111/febs.15103] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 08/19/2019] [Accepted: 10/22/2019] [Indexed: 12/15/2022]
Abstract
Mitochondria are as highly specialized organelles and masters of the cellular energy metabolism in a constant and dynamic interplay with their cellular environment, providing adenosine triphosphate, buffering Ca2+ and fundamentally contributing to various signaling pathways. Hence, such broad field of action within eukaryotic cells requires a high level of structural and functional adaptation. Therefore, mitochondria are constantly moving and undergoing fusion and fission processes, changing their shape and their interaction with other organelles. Moreover, mitochondrial activity gets fine-tuned by intra- and interorganelle H+ , K+ , Na+ , and Ca2+ signaling. In this review, we provide an up-to-date overview on mitochondrial strategies to adapt and respond to, as well as affect, their cellular environment. We also present cutting-edge technologies used to track and investigate subcellular signaling, essential to the understanding of various physiological and pathophysiological processes.
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Affiliation(s)
- Corina T Madreiter-Sokolowski
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Austria.,Department of Health Sciences and Technology, ETH Zurich, Schwerzenbach, Switzerland
| | - Jeta Ramadani-Muja
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Austria
| | - Gabriela Ziomek
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Austria
| | - Sandra Burgstaller
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Austria
| | - Helmut Bischof
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Austria
| | - Zhanat Koshenov
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Austria
| | - Benjamin Gottschalk
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Austria
| | - Roland Malli
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Austria.,BioTechMed, Graz, Austria
| | - Wolfgang F Graier
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Austria.,BioTechMed, Graz, Austria
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Ellefsen KL, Holt JR, Chang AC, Nourse JL, Arulmoli J, Mekhdjian AH, Abuwarda H, Tombola F, Flanagan LA, Dunn AR, Parker I, Pathak MM. Myosin-II mediated traction forces evoke localized Piezo1-dependent Ca 2+ flickers. Commun Biol 2019; 2:298. [PMID: 31396578 PMCID: PMC6685976 DOI: 10.1038/s42003-019-0514-3] [Citation(s) in RCA: 128] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 06/18/2019] [Indexed: 02/05/2023] Open
Abstract
Piezo channels transduce mechanical stimuli into electrical and chemical signals to powerfully influence development, tissue homeostasis, and regeneration. Studies on Piezo1 have largely focused on transduction of "outside-in" mechanical forces, and its response to internal, cell-generated forces remains poorly understood. Here, using measurements of endogenous Piezo1 activity and traction forces in native cellular conditions, we show that cellular traction forces generate spatially-restricted Piezo1-mediated Ca2+ flickers in the absence of externally-applied mechanical forces. Although Piezo1 channels diffuse readily in the plasma membrane and are widely distributed across the cell, their flicker activity is enriched near force-producing adhesions. The mechanical force that activates Piezo1 arises from Myosin II phosphorylation by Myosin Light Chain Kinase. We propose that Piezo1 Ca2+ flickers allow spatial segregation of mechanotransduction events, and that mobility allows Piezo1 channels to explore a large number of mechanical microdomains and thus respond to a greater diversity of mechanical cues.
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Affiliation(s)
- Kyle L. Ellefsen
- Department of Neurobiology & Behavior, UC Irvine, Irvine, CA 92697 USA
| | - Jesse R. Holt
- Department of Physiology & Biophysics, UC Irvine, Irvine, CA 92697 USA
- Sue and Bill Gross Stem Cell Research Center, UC Irvine, Irvine, CA 92697 USA
- Center for Complex Biological Systems, UC Irvine, Irvine, CA 92697 USA
| | - Alice C. Chang
- Department of Chemical Engineering, Stanford University, Stanford, CA 94305 USA
| | - Jamison L. Nourse
- Department of Physiology & Biophysics, UC Irvine, Irvine, CA 92697 USA
- Sue and Bill Gross Stem Cell Research Center, UC Irvine, Irvine, CA 92697 USA
| | - Janahan Arulmoli
- Sue and Bill Gross Stem Cell Research Center, UC Irvine, Irvine, CA 92697 USA
- Department of Biomedical Engineering, UC Irvine, Irvine, CA 92697 USA
| | - Armen H. Mekhdjian
- Department of Chemical Engineering, Stanford University, Stanford, CA 94305 USA
| | - Hamid Abuwarda
- Department of Physiology & Biophysics, UC Irvine, Irvine, CA 92697 USA
- Sue and Bill Gross Stem Cell Research Center, UC Irvine, Irvine, CA 92697 USA
| | - Francesco Tombola
- Department of Physiology & Biophysics, UC Irvine, Irvine, CA 92697 USA
| | - Lisa A. Flanagan
- Sue and Bill Gross Stem Cell Research Center, UC Irvine, Irvine, CA 92697 USA
- Department of Biomedical Engineering, UC Irvine, Irvine, CA 92697 USA
- Department of Neurology, UC Irvine, Irvine, CA 92697 USA
| | - Alexander R. Dunn
- Department of Chemical Engineering, Stanford University, Stanford, CA 94305 USA
- Stanford Cardiovascular Institute, Stanford School of Medicine, Stanford, CA 94305 USA
| | - Ian Parker
- Department of Neurobiology & Behavior, UC Irvine, Irvine, CA 92697 USA
- Department of Physiology & Biophysics, UC Irvine, Irvine, CA 92697 USA
| | - Medha M. Pathak
- Department of Physiology & Biophysics, UC Irvine, Irvine, CA 92697 USA
- Sue and Bill Gross Stem Cell Research Center, UC Irvine, Irvine, CA 92697 USA
- Center for Complex Biological Systems, UC Irvine, Irvine, CA 92697 USA
- Department of Biomedical Engineering, UC Irvine, Irvine, CA 92697 USA
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29
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Baykara M, Ozcan M, Bilgen M, Kelestimur H. Effects of gadolinium and gadolinium chelates on intracellular calcium signaling in sensory neurons. Neurosci Lett 2019; 707:134295. [DOI: 10.1016/j.neulet.2019.134295] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 04/27/2019] [Accepted: 05/24/2019] [Indexed: 11/30/2022]
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30
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The effects of valve leaflet mechanics on lymphatic pumping assessed using numerical simulations. Sci Rep 2019; 9:10649. [PMID: 31337769 PMCID: PMC6650476 DOI: 10.1038/s41598-019-46669-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 06/20/2019] [Indexed: 01/04/2023] Open
Abstract
The lymphatic system contains intraluminal leaflet valves that function to bias lymph flow back towards the heart. These valves are present in the collecting lymphatic vessels, which generally have lymphatic muscle cells and can spontaneously pump fluid. Recent studies have shown that the valves are open at rest, can allow some backflow, and are a source of nitric oxide (NO). To investigate how these valves function as a mechanical valve and source of vasoactive species to optimize throughput, we developed a mathematical model that explicitly includes Ca2+ -modulated contractions, NO production and valve structures. The 2D lattice Boltzmann model includes an initial lymphatic vessel and a collecting lymphangion embedded in a porous tissue. The lymphangion segment has mechanically-active vessel walls and is flanked by deformable valves. Vessel wall motion is passively affected by fluid pressure, while active contractions are driven by intracellular Ca2+ fluxes. The model reproduces NO and Ca2+ dynamics, valve motion and fluid drainage from tissue. We find that valve structural properties have dramatic effects on performance, and that valves with a stiffer base and flexible tips produce more stable cycling. In agreement with experimental observations, the valves are a major source of NO. Once initiated, the contractions are spontaneous and self-sustained, and the system exhibits interesting non-linear dynamics. For example, increased fluid pressure in the tissue or decreased lymph pressure at the outlet of the system produces high shear stress and high levels of NO, which inhibits contractions. On the other hand, a high outlet pressure opposes the flow, increasing the luminal pressure and the radius of the vessel, which results in strong contractions in response to mechanical stretch of the wall. We also find that the location of contraction initiation is affected by the extent of backflow through the valves.
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31
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Morishita K, Watanabe K, Ichijo H. Cell volume regulation in cancer cell migration driven by osmotic water flow. Cancer Sci 2019; 110:2337-2347. [PMID: 31120184 PMCID: PMC6676112 DOI: 10.1111/cas.14079] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 05/17/2019] [Accepted: 05/21/2019] [Indexed: 12/12/2022] Open
Abstract
Cancer metastasis is the most frequent cause of death for patients with cancer. The main current treatment for cancer metastasis is chemotherapy targeting cancer cells’ ability to proliferate. However, some types of cancer cells show resistance to chemotherapy. Recently, cancer cell migration has become the subject of interest as a novel target of cancer therapy. Cell migration requires many factors, such as the cytoskeleton, cell‐matrix adhesion and cell volume regulation. Here, we focus on cell volume regulation and the role of ion/water transport systems in cell migration. Transport proteins, such as ion channels, ion carriers, and aquaporins, are indispensable for cell volume regulation under steady‐state conditions and during exposure to osmotic stress. Studies from the last ~25 years have revealed that cell volume regulation also plays an important role in the process of cell migration. Water flow in accordance with localized osmotic gradients generated by ion transport contributes to the driving force for cell migration. Moreover, it has been reported that metastatic cancer cells have higher expression of these transport proteins than nonmetastatic cancer cells. Thus, ion/water transport proteins involved in cell volume regulation and cell migration could be novel therapeutic targets for cancer metastasis. In this review, after presenting the importance of ion/water transport systems in cell volume regulation, we discuss the roles of transport proteins in a pathophysiological context, especially in the context of cancer cell migration.
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Affiliation(s)
- Kazuhiro Morishita
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Kengo Watanabe
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Hidenori Ichijo
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
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32
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Guégan JP, Ginestier C, Charafe-Jauffret E, Ducret T, Quignard JF, Vacher P, Legembre P. CD95/Fas and metastatic disease: What does not kill you makes you stronger. Semin Cancer Biol 2019; 60:121-131. [PMID: 31176682 DOI: 10.1016/j.semcancer.2019.06.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 06/05/2019] [Accepted: 06/05/2019] [Indexed: 12/14/2022]
Abstract
CD95 (also known as Fas) is the prototype of death receptors; however, evidence suggests that this receptor mainly implements non-apoptotic signaling pathways such as NF-κB, MAPK, and PI3K that are involved in cell migration, differentiation, survival, and cytokine secretion. At least two different forms of CD95 L exist. The multi-aggregated transmembrane ligand (m-CD95 L) is cleaved by metalloproteases to release a homotrimeric soluble ligand (s-CD95 L). Unlike m-CD95 L, the interaction between s-CD95 L and its receptor CD95 fails to trigger apoptosis, but instead promotes calcium-dependent cell migration, which contributes to the accumulation of inflammatory Th17 cells in damaged organs of lupus patients and favors cancer cell invasiveness. Novel inhibitors targeting the pro-inflammatory roles of CD95/CD95 L may provide attractive therapeutic options for patients with chronic inflammatory disorders or cancer. This review discusses the roles of the CD95/CD95 L pair in cell migration and metastasis.
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Affiliation(s)
- Jean Philippe Guégan
- CLCC Eugène Marquis, Équipe Ligue Contre Le Cancer, Rennes, France; Université Rennes, INSERM U1242, Rennes, France
| | - Christophe Ginestier
- Aix-Marseille Univ, Inserm, CNRS, Institut Paoli-Calmettes, CRCM, Epithelial Stem Cells and Cancer Lab, Marseille, France
| | - Emmanuelle Charafe-Jauffret
- Aix-Marseille Univ, Inserm, CNRS, Institut Paoli-Calmettes, CRCM, Epithelial Stem Cells and Cancer Lab, Marseille, France
| | - Thomas Ducret
- Université de Bordeaux, Bordeaux, France; Centre de Recherche Cardio Thoracique de Bordeaux, INSERM U1045, Bordeaux, France
| | - Jean-François Quignard
- Université de Bordeaux, Bordeaux, France; Centre de Recherche Cardio Thoracique de Bordeaux, INSERM U1045, Bordeaux, France
| | - Pierre Vacher
- Université de Bordeaux, Bordeaux, France; INSERM U1218, Bordeaux, France
| | - Patrick Legembre
- CLCC Eugène Marquis, Équipe Ligue Contre Le Cancer, Rennes, France; Université Rennes, INSERM U1242, Rennes, France.
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33
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Jöhr R, Bauer MS, Schendel LC, Kluger C, Gaub HE. Dronpa: A Light-Switchable Fluorescent Protein for Opto-Biomechanics. NANO LETTERS 2019; 19:3176-3181. [PMID: 30912662 DOI: 10.1021/acs.nanolett.9b00639] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Since the development of the green fluorescent protein, fluorescent proteins (FP) are indispensable tools in molecular biology. Some FPs change their structure under illumination, which affects their interaction with other biomolecules or proteins. In particular, FPs that are able to form switchable dimers became an important tool in the field of optogenetics. They are widely used for the investigation of signaling pathways, the control of surface recruitment, as well as enzyme and gene regulation. However, optogenetics did not yet develop tools for the investigation of biomechanical processes. This could be leveraged if one could find a light-switchable FP dimer that is able to withstand sufficiently high forces. In this work, we measure the rupture force of the switchable interface in pdDronpa1.2 dimers using atomic force microscopy-based single molecule force spectroscopy. The most probable dimer rupture force amounts to around 80 pN at a pulling speed of 1600 nm/s. After switching of the dimer using illumination at 488 nm, there are hardly any measurable interface interactions, which indicates the successful dissociation of the dimers. Hence this Dronpa dimer could expand the current toolbox in optogenetics with new opto-biomechanical applications like the control of tension in adhesion processes.
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Affiliation(s)
- Res Jöhr
- Lehrstuhl für Angewandte Physik and Center for Nanoscience , Ludwig-Maximilians-Universität , Munich 80799 , Germany
| | - Magnus S Bauer
- Lehrstuhl für Angewandte Physik and Center for Nanoscience , Ludwig-Maximilians-Universität , Munich 80799 , Germany
| | - Leonard C Schendel
- Lehrstuhl für Angewandte Physik and Center for Nanoscience , Ludwig-Maximilians-Universität , Munich 80799 , Germany
| | - Carleen Kluger
- Lehrstuhl für Angewandte Physik and Center for Nanoscience , Ludwig-Maximilians-Universität , Munich 80799 , Germany
| | - Hermann E Gaub
- Lehrstuhl für Angewandte Physik and Center for Nanoscience , Ludwig-Maximilians-Universität , Munich 80799 , Germany
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La X, Zhang L, Yang Y, Li H, Song G, Li Z. Tumor-secreted GRP78 facilitates the migration of macrophages into tumors by promoting cytoskeleton remodeling. Cell Signal 2019; 60:1-16. [PMID: 30959099 DOI: 10.1016/j.cellsig.2019.04.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 04/04/2019] [Accepted: 04/04/2019] [Indexed: 11/25/2022]
Abstract
Glucose-regulated protein 78 (GRP78), an important molecular chaperone in the endoplasmic reticulum, is often over-expressed in the central region of advanced tumor and acts as a promoter of tumor progression. As main immune cells in the tumor microenvironment, infiltration of abundant macrophages into advanced tumor further facilitates growth of tumor. Although has potential association between GRP78 and infiltration of macrophages, its underlying mechanisms are poorly understood. Here, we report that secreted GRP78 facilitates recruitment of macrophages into tumors both in vitro and in vivo. Further studies reveal that secreted GRP78 transports into macrophages and bound to intracellular Ca2+, which lead to uneven distribution of Ca2+ and subsequent polarization of macrophages. The polarization of macrophages activates expression of microRNA-200b-3p. By directly targeting RhoGDI, miR-200b-3p stimulates the activity of RhoGTPase and ultimately leads to the distribution of GTP-Rac1 and GTP-Cdc42 in front protrusion and GTP-RhoA in rear contraction, which further results in migration of macrophages in a certain direction. Our results reveal a novel function of GRP78 to promote the recruitment of macrophages to tumor and provide a potential therapeutic target for malignancies.
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Affiliation(s)
- Xiaoqin La
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, China
| | - Lichao Zhang
- Institutes of Biomedical Sciences, Shanxi University, Taiyuan 030006, China
| | - Yufei Yang
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, China
| | - Hanqing Li
- School of Life Science, Shanxi University, Taiyuan 030006, China
| | - Guisheng Song
- Department of Medicine, University of Minnesota, MN 55455, USA.
| | - Zhuoyu Li
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, China; Institutes of Biomedical Sciences, Shanxi University, Taiyuan 030006, China; School of Life Science, Shanxi University, Taiyuan 030006, China.
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35
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Frisch J, Angenendt A, Hoth M, Prates Roma L, Lis A. STIM-Orai Channels and Reactive Oxygen Species in the Tumor Microenvironment. Cancers (Basel) 2019; 11:E457. [PMID: 30935064 PMCID: PMC6520831 DOI: 10.3390/cancers11040457] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 03/22/2019] [Accepted: 03/27/2019] [Indexed: 02/06/2023] Open
Abstract
The tumor microenvironment (TME) is shaped by cancer and noncancerous cells, the extracellular matrix, soluble factors, and blood vessels. Interactions between the cells, matrix, soluble factors, and blood vessels generate this complex heterogeneous microenvironment. The TME may be metabolically beneficial or unbeneficial for tumor growth, it may favor or not favor a productive immune response against tumor cells, or it may even favor conditions suited to hijacking the immune system for benefitting tumor growth. Soluble factors relevant for TME include oxygen, reactive oxygen species (ROS), ATP, Ca2+, H⁺, growth factors, or cytokines. Ca2+ plays a prominent role in the TME because its concentration is directly linked to cancer cell proliferation, apoptosis, or migration but also to immune cell function. Stromal-interaction molecules (STIM)-activated Orai channels are major Ca2+ entry channels in cancer cells and immune cells, they are upregulated in many tumors, and they are strongly regulated by ROS. Thus, STIM and Orai are interesting candidates to regulate cancer cell fate in the TME. In this review, we summarize the current knowledge about the function of ROS and STIM/Orai in cancer cells; discuss their interdependencies; and propose new hypotheses how TME, ROS, and Orai channels influence each other.
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Affiliation(s)
- Janina Frisch
- Department of Biophysics, Center for Integrative Physiology and Molecular Medicine, Medical Faculty, Saarland University, 66421 Homburg, Germany.
- Center for Human and Molecular Biology, Saarland University, 66421 Homburg, Germany.
| | - Adrian Angenendt
- Department of Biophysics, Center for Integrative Physiology and Molecular Medicine, Medical Faculty, Saarland University, 66421 Homburg, Germany.
| | - Markus Hoth
- Department of Biophysics, Center for Integrative Physiology and Molecular Medicine, Medical Faculty, Saarland University, 66421 Homburg, Germany.
| | - Leticia Prates Roma
- Department of Biophysics, Center for Integrative Physiology and Molecular Medicine, Medical Faculty, Saarland University, 66421 Homburg, Germany.
- Center for Human and Molecular Biology, Saarland University, 66421 Homburg, Germany.
| | - Annette Lis
- Department of Biophysics, Center for Integrative Physiology and Molecular Medicine, Medical Faculty, Saarland University, 66421 Homburg, Germany.
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Manipulation of cell migration by laserporation-induced local wounding. Sci Rep 2019; 9:4291. [PMID: 30862930 PMCID: PMC6414676 DOI: 10.1038/s41598-019-39678-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Accepted: 01/28/2019] [Indexed: 12/17/2022] Open
Abstract
Living organisms employ various mechanisms to escape harm. At the cellular level, mobile cells employ movement to avoid harmful chemicals or repellents. The present study is the first to report that cells move away from the site of injury in response to local wounding. When a migrating Dictyostelium cell was locally wounded at its anterior region by laserporation, the cell retracted its anterior pseudopods, extended a new pseudopod at the posterior region, and migrated in the opposite direction with increasing velocity. When wounded in the posterior region, the cell did not change its polarity and moved away from the site of wounding. Since the cells repair wounds within a short period, we successfully manipulated cell migration by applying multiple wounds. Herein, we discussed the signals that contributed to the wound-induced escape behavior of Dictyostelium cells. Our findings provide important insights into the mechanisms by which cells establish their polarity.
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Palmieri B, Scanlon C, Worroll D, Grant M, Lee J. Substrate mediated interaction between pairs of keratocytes: Multipole traction force models describe their migratory behavior. PLoS One 2019; 14:e0212162. [PMID: 30822310 PMCID: PMC6396918 DOI: 10.1371/journal.pone.0212162] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 01/29/2019] [Indexed: 11/18/2022] Open
Abstract
A series of traction force microscopy experiments involving pairs of keratocytes migrating on compliant substrates were analyzed. We observed several instances where keratocytes that are about to collide turn before they touch. We term this phenomenon collision avoidance behavior and we propose that the turning is caused by the substrate mediated elastic interactions between the cells. A multipole analysis of the cell traction reveals that the left-right symmetry of the keratocyte traction pattern is broken during collision avoidance events. The analysis further shows that the cell migration direction reorients before the principal traction dipoles as the cells turn. Linear elasticity theory is used to derive the cell-cell interaction energy between pairs of keratocytes. The traction force applied by each cell is modeled as a two points (dipole) or three points (tripod) force model. We show that both models predict that cells that are about to collide in a head-on manner will turn before touching. The tripod model is further able to account for the quadrupole components of the traction force profile that we observed experimentally. Also, the tripod model proposes a mechanism that may explain why cells tend to scatter with a finite angle after a collision avoidance event. A relationship between the scattering angle and the traction force quadrupole moment is also established. Dynamical simulations of migrating model cells are further used to explain the emergence of other cell pair trajectories that we observed experimentally.
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Affiliation(s)
- Benoit Palmieri
- Department of Physics, McGill University, Montréal, Québec, Canada
| | - Christine Scanlon
- Department of Molecular & Cell Biology, Storrs, CT, United States of America
| | - Daniel Worroll
- Department of Molecular & Cell Biology, Storrs, CT, United States of America
| | - Martin Grant
- Department of Physics, McGill University, Montréal, Québec, Canada
| | - Juliet Lee
- Department of Molecular & Cell Biology, Storrs, CT, United States of America
- * E-mail:
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38
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Zhao Y, Wang Y, Sarkar A, Wang X. Keratocytes Generate High Integrin Tension at the Trailing Edge to Mediate Rear De-adhesion during Rapid Cell Migration. iScience 2018; 9:502-512. [PMID: 30472533 PMCID: PMC6257914 DOI: 10.1016/j.isci.2018.11.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 08/30/2018] [Accepted: 11/07/2018] [Indexed: 01/24/2023] Open
Abstract
Rapid cell migration requires efficient rear de-adhesion. It remains undetermined whether cells mechanically detach or biochemically disassemble integrin-mediated rear adhesion sites in highly motile cells such as keratocytes. Using molecular tension sensor, we calibrated and mapped integrin tension in migrating keratocytes. Our experiments revealed that high-level integrin tension abbreviated as HIT, in the range of 50–100 pN (piconewton) and capable of rupturing integrin-ligand bonds, is exclusively and narrowly generated at cell rear margin during cell migration. Co-imaging of HIT and focal adhesions (FAs) shows that HIT is produced to mechanically peel off FAs that lag behind, and HIT intensity is correlated with the local cell retraction rate. High-level molecular tension was also consistently generated at the cell margin during artificially induced cell front retraction and during keratocyte migration mediated by biotin-streptavidin bonds. Collectively, these experiments provide direct evidence showing that migrating keratocytes concentrate force at the cell rear margin to mediate rear de-adhesion. Tension sensor (ITS) mapped and calibrated integrin tension in migratory cells High-level integrin tension (HIT) above 54 pN was observed in migrating keratocytes HIT is exclusively and narrowly localized at the cell rear margin HIT peels off focal adhesions at cell rear and facilitates keratocyte retraction
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Affiliation(s)
- Yuanchang Zhao
- Department of Physics and Astronomy, Iowa State University, 12 Physics Hall, Ames, IA 50011, USA
| | - Yongliang Wang
- Department of Physics and Astronomy, Iowa State University, 12 Physics Hall, Ames, IA 50011, USA
| | - Anwesha Sarkar
- Department of Physics and Astronomy, Iowa State University, 12 Physics Hall, Ames, IA 50011, USA
| | - Xuefeng Wang
- Department of Physics and Astronomy, Iowa State University, 12 Physics Hall, Ames, IA 50011, USA; Molecular, Cellular, and Developmental Biology Interdepartmental Program, Molecular Biology Building, Ames, IA 50011, USA.
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39
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Prevarskaya N, Skryma R, Shuba Y. Ion Channels in Cancer: Are Cancer Hallmarks Oncochannelopathies? Physiol Rev 2018; 98:559-621. [PMID: 29412049 DOI: 10.1152/physrev.00044.2016] [Citation(s) in RCA: 277] [Impact Index Per Article: 46.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Genomic instability is a primary cause and fundamental feature of human cancer. However, all cancer cell genotypes generally translate into several common pathophysiological features, often referred to as cancer hallmarks. Although nowadays the catalog of cancer hallmarks is quite broad, the most common and obvious of them are 1) uncontrolled proliferation, 2) resistance to programmed cell death (apoptosis), 3) tissue invasion and metastasis, and 4) sustained angiogenesis. Among the genes affected by cancer, those encoding ion channels are present. Membrane proteins responsible for signaling within cell and among cells, for coupling of extracellular events with intracellular responses, and for maintaining intracellular ionic homeostasis ion channels contribute to various extents to pathophysiological features of each cancer hallmark. Moreover, tight association of these hallmarks with ion channel dysfunction gives a good reason to classify them as special type of channelopathies, namely oncochannelopathies. Although the relation of cancer hallmarks to ion channel dysfunction differs from classical definition of channelopathies, as disease states causally linked with inherited mutations of ion channel genes that alter channel's biophysical properties, in a broader context of the disease state, to which pathogenesis ion channels essentially contribute, such classification seems absolutely appropriate. In this review the authors provide arguments to substantiate such point of view.
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Affiliation(s)
- Natalia Prevarskaya
- INSERM U-1003, Equipe Labellisée par la Ligue Nationale contre le Cancer et LABEX, Université Lille1 , Villeneuve d'Ascq , France ; Bogomoletz Institute of Physiology and International Center of Molecular Physiology, NASU, Kyiv-24, Ukraine
| | - Roman Skryma
- INSERM U-1003, Equipe Labellisée par la Ligue Nationale contre le Cancer et LABEX, Université Lille1 , Villeneuve d'Ascq , France ; Bogomoletz Institute of Physiology and International Center of Molecular Physiology, NASU, Kyiv-24, Ukraine
| | - Yaroslav Shuba
- INSERM U-1003, Equipe Labellisée par la Ligue Nationale contre le Cancer et LABEX, Université Lille1 , Villeneuve d'Ascq , France ; Bogomoletz Institute of Physiology and International Center of Molecular Physiology, NASU, Kyiv-24, Ukraine
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40
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Oscillatory fluid flow drives scaling of contraction wave with system size. Proc Natl Acad Sci U S A 2018; 115:10612-10617. [PMID: 30282737 DOI: 10.1073/pnas.1805981115] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Flows over remarkably long distances are crucial to the functioning of many organisms, across all kingdoms of life. Coordinated flows are fundamental to power deformations, required for migration or development, or to spread resources and signals. A ubiquitous mechanism to generate flows, particularly prominent in animals and amoebas, is actomyosin cortex-driven mechanical deformations that pump the fluid enclosed by the cortex. However, it is unclear how cortex dynamics can self-organize to give rise to coordinated flows across the largely varying scales of biological systems. Here, we develop a mechanochemical model of actomyosin cortex mechanics coupled to a contraction-triggering, soluble chemical. The chemical itself is advected with the flows generated by the cortex-driven deformations of the tubular-shaped cell. The theoretical model predicts a dynamic instability giving rise to stable patterns of cortex contraction waves and oscillatory flows. Surprisingly, simulated patterns extend beyond the intrinsic length scale of the dynamic instability-scaling with system size instead. Patterns appear randomly but can be robustly generated in a growing system or by flow-generating boundary conditions. We identify oscillatory flows as the key for the scaling of contraction waves with system size. Our work shows the importance of active flows in biophysical models of patterning, not only as a regulating input or an emergent output, but also as a full part of a self-organized machinery. Contractions and fluid flows are observed in all kinds of organisms, so this concept is likely to be relevant for a broad class of systems.
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41
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Maltaneri RE, Schiappacasse A, Chamorro ME, Nesse AB, Vittori DC. Participation of membrane calcium channels in erythropoietin-induced endothelial cell migration. Eur J Cell Biol 2018; 97:411-421. [DOI: 10.1016/j.ejcb.2018.06.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 06/15/2018] [Accepted: 06/17/2018] [Indexed: 12/25/2022] Open
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42
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Chubinskiy-Nadezhdin VI, Efremova TN, Negulyaev YA, Morachevskaya EA. Coupled Activation of Mechanosensitive and Calcium-Dependent Potassium Channels in 3T3 and 3T3-SV40 Cells. ACTA ACUST UNITED AC 2018. [DOI: 10.1134/s1990519x18030021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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43
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Gangatharan G, Schneider-Maunoury S, Breau MA. Role of mechanical cues in shaping neuronal morphology and connectivity. Biol Cell 2018; 110:125-136. [PMID: 29698566 DOI: 10.1111/boc.201800003] [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: 01/06/2018] [Accepted: 04/09/2018] [Indexed: 02/06/2023]
Abstract
Neuronal circuits, the functional building blocks of the nervous system, assemble during development through a series of dynamic processes including the migration of neurons to their final position, the growth and navigation of axons and their synaptic connection with target cells. While the role of chemical cues in guiding neuronal migration and axonal development has been extensively analysed, the contribution of mechanical inputs, such as forces and stiffness, has received far less attention. In this article, we review the in vitro and more recent in vivo studies supporting the notion that mechanical signals are critical for multiple aspects of neuronal circuit assembly, from the emergence of axons to the formation of functional synapses. By combining live imaging approaches with tools designed to measure and manipulate the mechanical environment of neurons, the emerging field of neuromechanics will add a new paradigm in our understanding of neuronal development and potentially inspire novel regenerative therapies.
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Affiliation(s)
- Girisaran Gangatharan
- Sorbonne Université, CNRS UMR 7622, Laboratoire de Biologie du Développement-Institut de Biologie Paris Seine (LBD-IBPS), INSERM, Paris, 75005, France
| | - Sylvie Schneider-Maunoury
- Sorbonne Université, CNRS UMR 7622, Laboratoire de Biologie du Développement-Institut de Biologie Paris Seine (LBD-IBPS), INSERM, Paris, 75005, France
| | - Marie Anne Breau
- Sorbonne Université, CNRS UMR 7622, Laboratoire de Biologie du Développement-Institut de Biologie Paris Seine (LBD-IBPS), INSERM, Paris, 75005, France.,Sorbonne Université, CNRS UMR 8237, Laboratoire Jean Perrin, Paris, 75005, France
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44
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Babona-Pilipos R, Liu N, Pritchard-Oh A, Mok A, Badawi D, Popovic MR, Morshead CM. Calcium influx differentially regulates migration velocity and directedness in response to electric field application. Exp Cell Res 2018; 368:202-214. [PMID: 29729231 DOI: 10.1016/j.yexcr.2018.04.031] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 04/25/2018] [Accepted: 04/28/2018] [Indexed: 11/15/2022]
Abstract
Neural precursor cells (NPCs) respond to externally applied direct current electrical fields (DCEFs) by undergoing rapid and directed migration toward the cathode in a process known as galvanotaxis. It is unknown if the underlying mechanisms of galvanotactic migration is common to non-electrosensitive cells and if so, how NPCs and other galvanotactic cells sense and transduce electrical fields into cellular motility. In this study, we show that distinct aspects of NPC galvanotactic migration: motility (quantified through |velocity|) and directedness, are differentially regulated by calcium. We use low-Ca2+ culture conditions; an intracellular Ca2+ chelator; and voltage gated calcium channel (VGCC) inhibitors to specific channels expressed on NPCs, to demonstrate the role of Ca2+ influx in DCEF-induced NPC migration. Consistent with existing literature, we show Ca2+ is involved in F-actin polymerization that lengthens NPC membrane protrusions necessary for cellular motility. However, inhibiting Ca2+ results in reduced velocity but has no effect on DCEF-induced directedness. This dissociation between velocity and directedness reveal that these migration parameters can be independently regulated, thus suggesting a parallel process of sensing DCEFs by NPCs.
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Affiliation(s)
- R Babona-Pilipos
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Canada; Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, Canada; Department of Surgery, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - N Liu
- Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, Canada; Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada
| | - A Pritchard-Oh
- Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, Canada
| | - A Mok
- Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, Canada
| | - D Badawi
- Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, Canada
| | - M R Popovic
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Canada
| | - C M Morshead
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Canada; Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, Canada; Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada; Department of Surgery, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.
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45
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Xu M, Seas A, Kiyani M, Ji KSY, Bell HN. A temporal examination of calcium signaling in cancer- from tumorigenesis, to immune evasion, and metastasis. Cell Biosci 2018; 8:25. [PMID: 29636894 PMCID: PMC5883416 DOI: 10.1186/s13578-018-0223-5] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 03/26/2018] [Indexed: 12/16/2022] Open
Abstract
Background Although the study of calcium (Ca2+) is classically associated with excitable cells such as myocytes or neurons, the ubiquity of this essential element in all cellular processes has led to interest in other cell types. The importance of Ca2+ to apoptosis, cell signaling, and immune activation is of special import in cancer. Main Here we review the current understanding of Ca2+ in each of these processes vital to the initiation, spread, and drug resistance of malignancies. We describe the involvement of Ca2+, and Ca2+ related proteins in cell cycle checkpoints and Ca2+ dependent apoptosis and discuss their roles in cellular immortalization. The role of Ca2+ in inter-cellular communication is also discussed in relevance to tumor-stromal communication, angiogenesis, and tumor microinvasion. The role that Ca2+ plays in immune surveillance and evasion is also addressed. Finally, we discuss the possibility of targeting Ca2+ singling to address the most pressing topics of cancer treatment: metastatic disease and drug resistance. Conclusion This review discusses the current understanding of Ca2+ in cancer. By addressing Ca2+ facilitated angiogenesis, immune evasion, metastasis, and drug resistance, we anticipate future avenues for development of Ca2+ as a nexus of therapy.
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Affiliation(s)
- MengMeng Xu
- 1Medical-Scientist Training Program, Duke University Medical Center, Durham, NC 27710 USA.,2Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC 27710 USA
| | - Andreas Seas
- 1Medical-Scientist Training Program, Duke University Medical Center, Durham, NC 27710 USA
| | - Musa Kiyani
- 3School of Medicine, Duke University Medical Center, Durham, NC 27710 USA.,4Duke-NUS Medical School, Singapore, 169857 Singapore
| | - Keven S Y Ji
- 3School of Medicine, Duke University Medical Center, Durham, NC 27710 USA
| | - Hannah N Bell
- 1Medical-Scientist Training Program, Duke University Medical Center, Durham, NC 27710 USA
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46
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Patil S, Deshpande T, Chaudhari N, Singh YRG, Raut J, Joshi YM, Sharma A. Making Nonsticky Surfaces of Sticky Materials: Self-Organized Microtexturing of Viscoelastic Elastomeric Layers by Tearing. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:3767-3774. [PMID: 29505263 DOI: 10.1021/acs.langmuir.7b04389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Fabrication of large area, multiscale microtextured surfaces engineered for antiadhesion properties remains a challenge. Compared to an elastic surface, viscoelastic solids show much higher surface stickiness, tack, and adhesion owing to the increased contact area and energy dissipation. Here, we show a simple, low cost, large-area and high throughput method with roll-to-roll compatibility to fabricate multiscale, rough microstructures resistant to adhesion in a viscoelastic layer by controlled tearing of viscous film. Even a high adhesive strength viscoelastic solid layer, such as partially cured PDMS, is made nonsticky simply by its controlled tearing. The torn surface shows a fracture induced, self-organized leaflike micropattern resistant to sticking. The topography and adhesion strength of these structures are readily tuned by changing the tearing speed and the film thickness. The microtexture displays a springlike recovery, low adhesive strength, and easy release properties even under the high applied loads.
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Affiliation(s)
- Sandip Patil
- Department of Chemical Engineering , Indian Institute of Technology , Kanpur - 208016 , U.P. , India
| | - Tushar Deshpande
- Department of Chemical Engineering , Indian Institute of Technology , Kanpur - 208016 , U.P. , India
| | - Nayantika Chaudhari
- Department of Chemical Engineering , Indian Institute of Technology , Kanpur - 208016 , U.P. , India
| | - Yogesh R G Singh
- Department of Chemical Engineering , Indian Institute of Technology , Kanpur - 208016 , U.P. , India
| | - Janhavi Raut
- Unilever R&D , 64 Main Road, Whitefield , Bangalore 560066 , India
| | - Yogesh M Joshi
- Department of Chemical Engineering , Indian Institute of Technology , Kanpur - 208016 , U.P. , India
| | - Ashutosh Sharma
- Department of Chemical Engineering , Indian Institute of Technology , Kanpur - 208016 , U.P. , India
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47
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Tajbakhsh A, Pasdar A, Rezaee M, Fazeli M, Soleimanpour S, Hassanian SM, FarshchiyanYazdi Z, Younesi Rad T, Ferns GA, Avan A. The current status and perspectives regarding the clinical implication of intracellular calcium in breast cancer. J Cell Physiol 2018; 233:5623-5641. [PMID: 29150934 DOI: 10.1002/jcp.26277] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 11/06/2017] [Indexed: 12/20/2022]
Abstract
Calcium ions (Ca2+ ) act as second messengers in intracellular signaling. Ca2+ pumps, channels, sensors, and calcium binding proteins, regulate the concentrations of intracellular Ca2+ as a key regulator of important cellular processes such as gene expression, proliferation, differentiation, DNA repair, apoptosis, metastasis, and hormone secretion. Intracellular Ca2+ also influences the functions of several organelles, that include: the endoplasmic reticulum, mitochondria, the Golgi, and cell membrane both in normal and breast cancer cells. In breast cancer, the disruption of intracellular: Ca2+ homeostasis may cause tumor progression by affecting key factors/pathways including phospholipase C (PLC), inositol 1,4,5-trisphosphate (IP3), calmodulin (CaM), nuclear factor of activated T-cells (NFAT), calpain, calmodulin-dependent protein kinase II (CaMKII), mitogen-activated protein kinase (MAPK), epithelial-mesenchymal transition (EMT), vascular endothelial growth factor (VEGF), poly (ADP-Ribose) polymerase-1 (PARP1), estrogen, and estrogen receptor. Because the foregoing molecules play crucial roles in breast cancer, the factors/pathways influencing intracellular Ca2+ concentrations are putative targets for cancer treatment, using drugs such as Mephebrindole, Tilapia piscidin 4, Nifetepimine, Paricalcitol, and Prednisolone. We have explored the factors/pathways which are related to breast cancer and Ca2+ homeostasis and signaling in this review, and also discussed their potential as biomarkers for breast cancer staging, prognosis, and therapy.
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Affiliation(s)
- Amir Tajbakhsh
- Department of Modern Sciences and Technologies, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Alireza Pasdar
- Department of Modern Sciences and Technologies, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Division of Applied Medicine, Medical School, University of Aberdeen, Foresterhill, Aberdeen, UK.,Medical Genetics Research Centre, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mehdi Rezaee
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Medical Biotechnology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mostafa Fazeli
- Department of Modern Sciences and Technologies, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Saman Soleimanpour
- Department of Microbiology and Virology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Mahdi Hassanian
- Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Zahra FarshchiyanYazdi
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Laboratory Sciences, Faculty of Paramedical Sciences, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Tayebe Younesi Rad
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Laboratory Sciences, Faculty of Paramedical Sciences, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Gordon A Ferns
- Division of Medical Education, Brighton and Sussex Medical School, Falmer, Brighton, Sussex, UK
| | - Amir Avan
- Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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48
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Breau MA, Schneider-Maunoury S. [Stretch-induced axon growth: a universal, yet poorly explored process]. Biol Aujourdhui 2018; 211:215-222. [PMID: 29412131 DOI: 10.1051/jbio/2017028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Indexed: 12/21/2022]
Abstract
The growth of axons is a key step in neuronal circuit assembly. The axon starts elongating with the migration of its growth cone in response to molecular signals present in the surrounding embryonic tissues. Following the formation of a synapse between the axon and the target cell, the distance which separates the cell body from the synapse continues to increase to accommodate the growth of the organism. This second phase of elongation, which is universal and crucial since it contributes to an important proportion of the final axon size, has been historically referred to as "stretch-induced axon growth". It is indeed likely to result from a mechanical tension generated by the growth of the body, but the underlying mechanisms remain poorly characterized. This article reviews the experimental studies of this process, mainly analysed on cultured neurons so far. The recent development of in vivo imaging techniques and tools to probe and perturb mechanical forces within embryos will shed new light on this universal mode of axonal growth. This knowledge may inspire the design of novel tissue engineering strategies dedicated to brain and spinal cord repair.
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Affiliation(s)
- Marie Anne Breau
- Institut de Biologie Paris-Seine (IBPS), Laboratoire de Biologie du Développement, CNRS UMR7622, INSERM U1156, 75005 Paris, France - Sorbonne Universités, UPMC Université Paris 06, 75005 Paris, France
| | - Sylvie Schneider-Maunoury
- Institut de Biologie Paris-Seine (IBPS), Laboratoire de Biologie du Développement, CNRS UMR7622, INSERM U1156, 75005 Paris, France - Sorbonne Universités, UPMC Université Paris 06, 75005 Paris, France
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49
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Mo P, Yang S. The store-operated calcium channels in cancer metastasis: from cell migration, invasion to metastatic colonization. Front Biosci (Landmark Ed) 2018; 23:1241-1256. [PMID: 28930597 DOI: 10.2741/4641] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Store-operated calcium entry (SOCE) is the predominant calcium entry mechanism in most cancer cells. SOCE is mediated by the endoplasmic reticulum calcium sensor STIMs (STIM1 and 2) and plasma membrane channel forming unit Orais (Orai 1-3). In recent years there is increasing evidence indicating that SOCE in cancer cells is dysregulated to promote cancer cell migration, invasion and metastasis. The overexpression of STIM and Orai proteins has been reported to correlate with the metastatic progression of various cancers. The hyperactive SOCE may promote metastatic dissemination and colonization by reorganizing the actin cytoskeleton, degrading the extracellular matrix and remodeling the tumor microenvironment. Here we discuss how these recent progresses provide novel insights to our understanding of tumor metastasis.
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Affiliation(s)
- Pingli Mo
- School of Life Sciences, Xiamen University, Xiamen, Fujian China
| | - Shengyu Yang
- Department of Cellular and Molecular Physiology, College of Medicine, The Pennsylvania State University, Hershey, PA 17033,
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50
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Putelat T, Recho P, Truskinovsky L. Mechanical stress as a regulator of cell motility. Phys Rev E 2018; 97:012410. [PMID: 29448458 DOI: 10.1103/physreve.97.012410] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Indexed: 06/08/2023]
Abstract
The motility of a cell can be triggered or inhibited not only by an applied force but also by a mechanically neutral force couple. This type of loading, represented by an applied stress and commonly interpreted as either squeezing or stretching, can originate from extrinsic interaction of a cell with its neighbors. To quantify the effect of applied stresses on cell motility we use an analytically transparent one-dimensional model accounting for active myosin contraction and induced actin turnover. We show that stretching can polarize static cells and initiate cell motility while squeezing can symmetrize and arrest moving cells. We show further that sufficiently strong squeezing can lead to the loss of cell integrity. The overall behavior of the system depends on the two dimensionless parameters characterizing internal driving (chemical activity) and external loading (applied stress). We construct a phase diagram in this parameter space distinguishing between static, motile, and collapsed states. The obtained results are relevant for the mechanical understanding of contact inhibition and the epithelial-to-mesenchymal transition.
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Affiliation(s)
- T Putelat
- DEM, Queen's School of Engineering, University of Bristol, Bristol BS8 1TR, United Kingdom
| | - P Recho
- LIPhy, CNRS-UMR 5588, Université Grenoble Alpes, F-38000 Grenoble, France
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