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Toudic C, Maurer M, St-Pierre G, Xiao Y, Bannert N, Lafond J, Rassart É, Sato S, Barbeau B. Galectin-1 Modulates the Fusogenic Activity of Placental Endogenous Retroviral Envelopes. Viruses 2023; 15:2441. [PMID: 38140682 PMCID: PMC10747188 DOI: 10.3390/v15122441] [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: 10/24/2023] [Revised: 12/11/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023] Open
Abstract
Syncytin-1 and -2 are glycoproteins encoded by human endogenous retrovirus (hERV) that, through their fusogenic properties, are needed for the formation of the placental syncytiotrophoblast. Previous studies suggested that these proteins, in addition to the EnvP(b) envelope protein, are also involved in other cell fusion events. Since galectin-1 is a β-galactoside-binding protein associated with cytotrophoblast fusion during placental development, we previously tested its effect on Syncytin-mediated cell fusion and showed that this protein differently modulates the fusogenic potential of Syncytin-1 and -2. Herein, we were interested in comparing the impact of galectin-1 on hERV envelope proteins in different cellular contexts. Using a syncytium assay, we first demonstrated that galectin-1 increased the fusion of Syncytin-2- and EnvP(b)-expressing cells. We then tested the infectivity of Syncytin-1 and -2 vs. VSV-G-pseudotyped viruses toward Cos-7 and various human cell lines. In the presence of galectin-1, infection of Syncytin-2-pseudotyped viruses augmented for all cell lines. In contrast, the impact of galectin-1 on the infectivity of Syncytin-1-pseudotyped viruses varied, being cell- and dose-dependent. In this study, we report the functional associations between three hERV envelope proteins and galectin-1, which should provide information on the fusogenic activity of these proteins in the placenta and other biological and pathological processes.
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Affiliation(s)
- Caroline Toudic
- Département des Sciences Biologiques and Centre d’excellence en Recherche sur les Maladies Orphelines-Fondation Courtois, Université du Québec à Montréal, Montréal, QC H3C 3P8, Canada; (C.T.); (Y.X.); (J.L.); (É.R.)
| | - Maike Maurer
- Robert-Koch Institute, 13353 Berlin, Germany; (M.M.); (N.B.)
| | - Guillaume St-Pierre
- Glycobiology and Bioimaging Laboratory, Research Centre for Infectious Diseases and Axe Maladies Infectieuses et Immunitaires, Laval University, Quebec City, QC G1V 0A6, Canada; (G.S.-P.); (S.S.)
| | - Yong Xiao
- Département des Sciences Biologiques and Centre d’excellence en Recherche sur les Maladies Orphelines-Fondation Courtois, Université du Québec à Montréal, Montréal, QC H3C 3P8, Canada; (C.T.); (Y.X.); (J.L.); (É.R.)
| | - Norbert Bannert
- Robert-Koch Institute, 13353 Berlin, Germany; (M.M.); (N.B.)
| | - Julie Lafond
- Département des Sciences Biologiques and Centre d’excellence en Recherche sur les Maladies Orphelines-Fondation Courtois, Université du Québec à Montréal, Montréal, QC H3C 3P8, Canada; (C.T.); (Y.X.); (J.L.); (É.R.)
| | - Éric Rassart
- Département des Sciences Biologiques and Centre d’excellence en Recherche sur les Maladies Orphelines-Fondation Courtois, Université du Québec à Montréal, Montréal, QC H3C 3P8, Canada; (C.T.); (Y.X.); (J.L.); (É.R.)
| | - Sachiko Sato
- Glycobiology and Bioimaging Laboratory, Research Centre for Infectious Diseases and Axe Maladies Infectieuses et Immunitaires, Laval University, Quebec City, QC G1V 0A6, Canada; (G.S.-P.); (S.S.)
| | - Benoit Barbeau
- Département des Sciences Biologiques and Centre d’excellence en Recherche sur les Maladies Orphelines-Fondation Courtois, Université du Québec à Montréal, Montréal, QC H3C 3P8, Canada; (C.T.); (Y.X.); (J.L.); (É.R.)
- Regroupement Intersectoriel de Recherche en Santé de l’Université du Québec, Montréal, QC H2X 1E3, Canada
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Heinritz C, Lamberger Z, Kocourková K, Minařík A, Humenik M. DNA Functionalized Spider Silk Nanohydrogels for Specific Cell Attachment and Patterning. ACS NANO 2022; 16:7626-7635. [PMID: 35521760 DOI: 10.1021/acsnano.1c11148] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Nucleated protein self-assembly of an azido modified spider silk protein was employed in the preparation of nanofibrillar networks with hydrogel-like properties immobilized on coatings of the same protein. Formation of the networks in a mild aqueous environment resulted in thicknesses between 2 and 60 nm, which were controlled only by the protein concentration. Incorporated azido groups in the protein were used to "click" short nucleic acid sequences onto the nanofibrils, which were accessible to specific hybridization-based modifications, as proved by fluorescently labeled DNA complements. A lipid modifier was used for efficient incorporation of DNA into the membrane of nonadherent Jurkat cells. Based on the complementarity of the nucleic acids, highly specific DNA-assisted immobilization of the cells on the nanohydrogels with tunable cell densities was possible. Addressability of the DNA cell-to-surface anchor was demonstrated with a competitive oligonucleotide probe, resulting in a rapid release of 75-95% of cells. In addition, we developed a photolithography-based patterning of arbitrarily shaped microwells, which served to spatially define the formation of the nanohydrogels. After detaching the photoresist and PEG-blocking of the surface, DNA-assisted immobilization of the Jurkat cells on the nanohydrogel microstructures was achieved with high fidelity.
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Affiliation(s)
- Christina Heinritz
- Department of Biomaterials, Faculty of Engineering Science, Universität Bayreuth, Prof.-Rüdiger-Bormann.Str. 1, 95447 Bayreuth, Germany
| | - Zan Lamberger
- Department of Biomaterials, Faculty of Engineering Science, Universität Bayreuth, Prof.-Rüdiger-Bormann.Str. 1, 95447 Bayreuth, Germany
| | - Karolína Kocourková
- Department of Physics and Materials Engineering, Tomas Bata University in Zlín, Vavrečkova 275, 76001 Zlín, Czech Republic
| | - Antonín Minařík
- Centre of Polymer Systems, Tomas Bata University in Zlín, Třída Tomáše Bati 5678, 76001 Zlín, Czech Republic
- Department of Physics and Materials Engineering, Tomas Bata University in Zlín, Vavrečkova 275, 76001 Zlín, Czech Republic
| | - Martin Humenik
- Department of Biomaterials, Faculty of Engineering Science, Universität Bayreuth, Prof.-Rüdiger-Bormann.Str. 1, 95447 Bayreuth, Germany
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Steelman ZA, Sedelnikova A, Coker ZN, Kiester A, Noojin G, Ibey BL, Bixler JN. Visualizing bleb mass dynamics in single cells using quantitative phase microscopy. APPLIED OPTICS 2021; 60:G10-G18. [PMID: 34613190 DOI: 10.1364/ao.426147] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 05/20/2021] [Indexed: 06/13/2023]
Abstract
Understanding biological responses to directed energy (DE) is critical to ensure the safety of personnel within the Department of Defense. At the Air Force Research Laboratory, we have developed or adapted advanced optical imaging systems that quantify biophysical responses to DE. One notable cellular response to DE exposure is the formation of blebs, or semi-spherical protrusions of the plasma membrane in living cells. In this work, we demonstrate the capacity of quantitative phase imaging (QPI) to both visualize and quantify the formation of membrane blebs following DE exposure. QPI is an interferometric imaging tool that uses optical path length as a label-free contrast mechanism and is sensitive to the non-aqueous mass density, or dry mass, of living cells. Blebs from both CHO-K1 and U937 cells were generated after exposure to a series of 600 ns, 21.2 kV/cm electric pulses. These blebs were visualized in real time, and their dry mass relative to the rest of the cell body was quantified as a function of time. It is our hope that this system will lead to an improved understanding of both DE-induced and apoptotic blebbing.
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Magnus CJ, Lee PH, Bonaventura J, Zemla R, Gomez JL, Ramirez MH, Hu X, Galvan A, Basu J, Michaelides M, Sternson SM. Ultrapotent chemogenetics for research and potential clinical applications. SCIENCE (NEW YORK, N.Y.) 2019; 364:science.aav5282. [PMID: 30872534 DOI: 10.1126/science.aav5282] [Citation(s) in RCA: 89] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Accepted: 02/15/2019] [Indexed: 12/11/2022]
Abstract
Chemogenetics enables noninvasive chemical control over cell populations in behaving animals. However, existing small-molecule agonists show insufficient potency or selectivity. There is also a need for chemogenetic systems compatible with both research and human therapeutic applications. We developed a new ion channel-based platform for cell activation and silencing that is controlled by low doses of the smoking cessation drug varenicline. We then synthesized subnanomolar-potency agonists, called uPSEMs, with high selectivity for the chemogenetic receptors. uPSEMs and their receptors were characterized in brains of mice and a rhesus monkey by in vivo electrophysiology, calcium imaging, positron emission tomography, behavioral efficacy testing, and receptor counterscreening. This platform of receptors and selective ultrapotent agonists enables potential research and clinical applications of chemogenetics.
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Affiliation(s)
- Christopher J Magnus
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Peter H Lee
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Jordi Bonaventura
- Biobehavioral Imaging and Molecular Neuropsychopharmacology Unit, National Institute on Drug Abuse Intramural Research Program, Baltimore, MD 21224, USA
| | - Roland Zemla
- Neuroscience Institute, New York University, New York, NY 10016, USA.,Medical Scientist Training Program, New York University School of Medicine, New York, NY 10016, USA
| | - Juan L Gomez
- Biobehavioral Imaging and Molecular Neuropsychopharmacology Unit, National Institute on Drug Abuse Intramural Research Program, Baltimore, MD 21224, USA
| | - Melissa H Ramirez
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Xing Hu
- Yerkes National Primate Research Center and Department of Neurology, Emory University, Atlanta, GA 30329, USA
| | - Adriana Galvan
- Yerkes National Primate Research Center and Department of Neurology, Emory University, Atlanta, GA 30329, USA
| | - Jayeeta Basu
- Neuroscience Institute, New York University, New York, NY 10016, USA.,Department of Neuroscience and Physiology, New York University Langone Medical Center, New York, NY 10016, USA
| | - Michael Michaelides
- Biobehavioral Imaging and Molecular Neuropsychopharmacology Unit, National Institute on Drug Abuse Intramural Research Program, Baltimore, MD 21224, USA.,Department of Psychiatry & Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Scott M Sternson
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA.
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Wu C, Zhu X, Man T, Chung PS, Teitell MA, Chiou PY. Lift-off cell lithography for cell patterning with clean background. LAB ON A CHIP 2018; 18:3074-3078. [PMID: 30183051 DOI: 10.1039/c8lc00726h] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We developed a highly efficient method for patterning cells by a novel and simple technique called lift-off cell lithography (LCL). Our approach borrows the key concept of lift-off lithography from microfabrication and utilizes a fully biocompatible process to achieve high-throughput, high-efficiency cell patterning with nearly zero background defects across a large surface area. Using LCL, we reproducibly achieved >70% patterning efficiency for both adherent and non-adherent cells with <1% defects in undesired areas.
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Affiliation(s)
- Cong Wu
- Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Hong Kong
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Oved K, Farberov L, Gilam A, Israel I, Haguel D, Gurwitz D, Shomron N. MicroRNA-Mediated Regulation of ITGB3 and CHL1 Is Implicated in SSRI Action. Front Mol Neurosci 2017; 10:355. [PMID: 29163031 PMCID: PMC5682014 DOI: 10.3389/fnmol.2017.00355] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Accepted: 10/18/2017] [Indexed: 01/05/2023] Open
Abstract
Background: Selective serotonin reuptake inhibitor (SSRI) antidepressant drugs are the first-line of treatment for major depressive disorder (MDD) but are effective in <70% of patients. Our earlier genome-wide studies indicated that two genes encoding for cell adhesion proteins, close homolog of L1 (CHL1) and integrin beta-3 (ITGB3), and microRNAs, miR-151a-3p and miR-221/222, are implicated in the variable sensitivity and response of human lymphoblastoid cell lines (LCL) from unrelated individuals to SSRI drugs. Methods: The microRNAs miR-221, miR-222, and miR-151-a-3p, along with their target gene binding sites, were explored in silico using miRBase, TargetScan, microRNAviewer, and the UCSC Genome Browser. Luciferase reporter assays were conducted for demonstrating the direct functional regulation of ITGB3 and CHL1 expression by miR-221/222 and miR-151a-3p, respectively. A human LCL exhibiting low sensitivity to paroxetine was utilized for studying the phenotypic effect of CHL1 regulation by miR-151a-3p on SSRI response. Results: By showing direct regulation of CHL1 and ITGB3 by miR-151a-3p and miR-221/222, respectively, we link these microRNAs and genes with cellular SSRI sensitivity phenotypes. We report that miR-151a-3p increases cell sensitivity to paroxetine via down-regulating CHL1 expression. Conclusions: miR-151a-3p, miR-221/222 and their (here confirmed) respective target-genes, CHL1 and ITGB3, are implicated in SSRI responsiveness, and possibly in the clinical response to antidepressant drugs.
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Affiliation(s)
- Keren Oved
- Faculty of Medicine, Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| | - Luba Farberov
- Faculty of Medicine, Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| | - Avial Gilam
- Faculty of Medicine, Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| | - Ifat Israel
- Faculty of Medicine, Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| | - Danielle Haguel
- Faculty of Medicine, Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| | - David Gurwitz
- Faculty of Medicine, Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| | - Noam Shomron
- Faculty of Medicine, Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
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Initial cell adhesion of three cell types in the presence and absence of serum proteins. Histochem Cell Biol 2017; 148:273-288. [DOI: 10.1007/s00418-017-1571-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/11/2017] [Indexed: 10/19/2022]
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Imaging fluorescence (cross-) correlation spectroscopy in live cells and organisms. Nat Protoc 2015; 10:1948-74. [DOI: 10.1038/nprot.2015.100] [Citation(s) in RCA: 127] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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La WG, Bhang SH, Shin JY, Yoon HH, Park J, Yang HS, Yu SH, Sung YE, Kim BS. 3,4-dihydroxy-L-phenylalanine as a cell adhesion molecule in serum-free cell culture. Biotechnol Prog 2012; 28:1055-60. [DOI: 10.1002/btpr.1560] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2011] [Revised: 04/18/2012] [Indexed: 11/06/2022]
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Influence of the fetal bovine serum proteins on the growth of human osteoblast cells on graphene. J Biomed Mater Res A 2012; 100:3001-7. [DOI: 10.1002/jbm.a.34231] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Revised: 03/22/2012] [Accepted: 04/23/2012] [Indexed: 11/07/2022]
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