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Marquez Loza LI, Cooney AL, Dong Q, Randak CO, Rivella S, Sinn PL, McCray PB. Increased CFTR expression and function from an optimized lentiviral vector for cystic fibrosis gene therapy. Mol Ther Methods Clin Dev 2021; 21:94-106. [PMID: 33768133 PMCID: PMC7973238 DOI: 10.1016/j.omtm.2021.02.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 02/23/2021] [Indexed: 01/02/2023]
Abstract
Despite significant advances in cystic fibrosis (CF) treatments, a one-time treatment for this life-shortening disease remains elusive. Stable complementation of the disease-causing mutation with a normal copy of the CF transmembrane conductance regulator (CFTR) gene fulfills that goal. Integrating lentiviral vectors are well suited for this purpose, but widespread airway transduction in humans is limited by achievable titers and delivery barriers. Since airway epithelial cells are interconnected through gap junctions, small numbers of cells expressing supraphysiologic levels of CFTR could support sufficient channel function to rescue CF phenotypes. Here, we investigated promoter choice and CFTR codon optimization (coCFTR) as strategies to regulate CFTR expression. We evaluated two promoters-phosphoglycerate kinase (PGK) and elongation factor 1-α (EF1α)-that have been safely used in clinical trials. We also compared the wild-type human CFTR sequence to three alternative coCFTR sequences generated by different algorithms. With the use of the CFTR-mediated anion current in primary human CF airway epithelia to quantify channel expression and function, we determined that EF1α produced greater currents than PGK and identified a coCFTR sequence that conferred significantly increased functional CFTR expression. Optimized promoter and CFTR sequences advance lentiviral vectors toward CF gene therapy clinical trials.
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Affiliation(s)
- Laura I. Marquez Loza
- Stead Family Department of Pediatrics, The University of Iowa, Iowa City, IA 52242, USA
- Pappajohn Biomedical Institute and the Center for Gene Therapy, The University of Iowa, Iowa City, IA 52242, USA
| | - Ashley L. Cooney
- Stead Family Department of Pediatrics, The University of Iowa, Iowa City, IA 52242, USA
- Pappajohn Biomedical Institute and the Center for Gene Therapy, The University of Iowa, Iowa City, IA 52242, USA
| | - Qian Dong
- Stead Family Department of Pediatrics, The University of Iowa, Iowa City, IA 52242, USA
- Pappajohn Biomedical Institute and the Center for Gene Therapy, The University of Iowa, Iowa City, IA 52242, USA
| | - Christoph O. Randak
- Stead Family Department of Pediatrics, The University of Iowa, Iowa City, IA 52242, USA
- Pappajohn Biomedical Institute and the Center for Gene Therapy, The University of Iowa, Iowa City, IA 52242, USA
| | - Stefano Rivella
- Division of Hematology, Department of Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Patrick L. Sinn
- Stead Family Department of Pediatrics, The University of Iowa, Iowa City, IA 52242, USA
- Pappajohn Biomedical Institute and the Center for Gene Therapy, The University of Iowa, Iowa City, IA 52242, USA
| | - Paul B. McCray
- Stead Family Department of Pediatrics, The University of Iowa, Iowa City, IA 52242, USA
- Pappajohn Biomedical Institute and the Center for Gene Therapy, The University of Iowa, Iowa City, IA 52242, USA
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Garth J, Easter M, Skylar Harris E, Sailland J, Kuenzi L, Chung S, Dennis JS, Baumlin N, Adewale AT, Rowe SM, King G, Faul C, Barnes JW, Salathe M, Krick S. The Effects of the Anti-aging Protein Klotho on Mucociliary Clearance. Front Med (Lausanne) 2020; 6:339. [PMID: 32039219 PMCID: PMC6992571 DOI: 10.3389/fmed.2019.00339] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 12/24/2019] [Indexed: 01/23/2023] Open
Abstract
α-klotho (KL) is an anti-aging protein and has been shown to exert anti-inflammatory and anti-oxidative effects in the lung and pulmonary diseases such as chronic obstructive pulmonary disease (COPD) and cystic fibrosis. The current study investigated the direct effect of KL on the bronchial epithelium in regards to mucociliary clearance parameters. Primary human bronchial and murine tracheal epithelial cells, cultured, and differentiated at the air liquid interface (ALI), were treated with recombinant KL or infected with a lentiviral vector expressing KL. Airway surface liquid (ASL) volume, airway ion channel activities, and expression levels were analyzed. These experiments were paired with ex vivo analyses of mucociliary clearance in murine tracheas from klotho deficient mice and their wild type littermates. Our results showed that klotho deficiency led to impaired mucociliary clearance with a reduction in ASL volume in vitro and ex vivo. Overexpression or exogenous KL increased ASL volume, which was paralleled by increased activation of the large-conductance, Ca2+-activated, voltage-dependent potassium channel (BK) without effect on the cystic fibrosis transmembrane conductance regulator (CFTR). Furthermore, KL overexpression downregulated IL-8 levels and attenuated TGF-β-mediated downregulation of LRRC26, the γ subunit of BK, necessary for its function in non-excitable cells. In summary, we show that KL regulates mucociliary function by increasing ASL volume in the airways possibly due to underlying BK activation. The KL mediated BK channel activation may be a potentially important target to design therapeutic strategies in inflammatory airway diseases when ASL volume is decreased.
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Affiliation(s)
- Jaleesa Garth
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Molly Easter
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Elex Skylar Harris
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
- Gregory Fleming James Cystic Fibrosis Research Center, The University of Alabama at Birmingham, Birmingham, AL, United States
| | - Juliette Sailland
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Lisa Kuenzi
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Samuel Chung
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, United States
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine University of Kansas Medical Center, Kansas City, KS, United States
| | - John S. Dennis
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, United States
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine University of Kansas Medical Center, Kansas City, KS, United States
| | - Nathalie Baumlin
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, United States
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine University of Kansas Medical Center, Kansas City, KS, United States
| | - Adegboyega T. Adewale
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine University of Kansas Medical Center, Kansas City, KS, United States
| | - Steven M. Rowe
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
- Gregory Fleming James Cystic Fibrosis Research Center, The University of Alabama at Birmingham, Birmingham, AL, United States
| | - Gwendalyn King
- Department of Biology, Creighton University, Omaha, NE, United States
| | - Christian Faul
- Division of Nephrology, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL, United States
| | - Jarrod W. Barnes
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
- Gregory Fleming James Cystic Fibrosis Research Center, The University of Alabama at Birmingham, Birmingham, AL, United States
| | - Matthias Salathe
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, United States
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine University of Kansas Medical Center, Kansas City, KS, United States
| | - Stefanie Krick
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
- Gregory Fleming James Cystic Fibrosis Research Center, The University of Alabama at Birmingham, Birmingham, AL, United States
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3
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Methods to Measure Perinuclear Actin Dynamics During Nuclear Movement in Migrating Cells. Methods Mol Biol 2019; 2101:371-385. [PMID: 31879914 DOI: 10.1007/978-1-0716-0219-5_21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
Abstract
The nucleus is specifically positioned within a cell in diverse biological contexts. There are multiple connections between the nuclear envelope and the cytoskeleton and these connections are involved in nuclear positioning. During cell polarization prior to cell migration, nuclear envelope proteins bind to the actin cytoskeleton and get organized into linear arrays, known as transmembrane actin-associated nuclear (TAN) lines to move the nucleus away from the leading edge. Here we describe methods to study perinuclear actin dynamics, including measurement of the thickness of actin cables coupled to TAN lines, measurement of the number of perinuclear actin cables, and ablation of perinuclear actin cables. These methods are used to identify mechanisms of nuclear positioning.
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4
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Chung S, Baumlin N, Dennis JS, Moore R, Salathe SF, Whitney PL, Sabater J, Abraham WM, Kim MD, Salathe M. Electronic Cigarette Vapor with Nicotine Causes Airway Mucociliary Dysfunction Preferentially via TRPA1 Receptors. Am J Respir Crit Care Med 2019; 200:1134-1145. [PMID: 31170808 PMCID: PMC6888648 DOI: 10.1164/rccm.201811-2087oc] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 06/05/2019] [Indexed: 12/11/2022] Open
Abstract
Rationale: Electronic cigarette (e-cig) use has been widely adopted under the perception of safety. However, possibly adverse effects of e-cig vapor in never-smokers are not well understood.Objectives: To test the effects of nicotine-containing e-cig vapors on airway mucociliary function in differentiated human bronchial epithelial cells isolated from never-smokers and in the airways of a novel, ovine large animal model.Methods: Mucociliary parameters were measured in human bronchial epithelial cells and in sheep. Systemic nicotine delivery to sheep was quantified using plasma cotinine levels, measured by ELISA.Measurements and Main Results:In vitro, exposure to e-cig vapor reduced airway surface liquid hydration and increased mucus viscosity of human bronchial epithelial cells in a nicotine-dependent manner. Acute nicotine exposure increased intracellular calcium levels, an effect primarily dependent on TRPA1 (transient receptor potential ankyrin 1). TRPA1 inhibition with A967079 restored nicotine-mediated impairment of mucociliary parameters including mucus transport in vitro. Sheep tracheal mucus velocity, an in vivo measure of mucociliary clearance, was also reduced by e-cig vapor. Nebulized e-cig liquid containing nicotine also reduced tracheal mucus velocity in a dose-dependent manner and elevated plasma cotinine levels. Importantly, nebulized A967079 reversed the effects of e-cig liquid on sheep tracheal mucus velocity.Conclusions: Our findings show that inhalation of e-cig vapor causes airway mucociliary dysfunction in vitro and in vivo. Furthermore, they suggest that the main nicotine effect on mucociliary function is mediated by TRPA1 and not nicotinic acetylcholine receptors.
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Affiliation(s)
- Samuel Chung
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Miami School of Medicine, Miami, Florida; and
| | - Nathalie Baumlin
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Miami School of Medicine, Miami, Florida; and
| | - John S. Dennis
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Miami School of Medicine, Miami, Florida; and
| | - Robert Moore
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Miami School of Medicine, Miami, Florida; and
| | - Sebastian F. Salathe
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Miami School of Medicine, Miami, Florida; and
| | - Phillip L. Whitney
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Miami School of Medicine, Miami, Florida; and
| | - Juan Sabater
- Department of Research, Mount Sinai Medical Center, Miami Beach, Florida
| | - William M. Abraham
- Department of Research, Mount Sinai Medical Center, Miami Beach, Florida
| | - Michael D. Kim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Miami School of Medicine, Miami, Florida; and
| | - Matthias Salathe
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Miami School of Medicine, Miami, Florida; and
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5
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Price ME, Case AJ, Pavlik JA, DeVasure JM, Wyatt TA, Zimmerman MC, Sisson JH. S-nitrosation of protein phosphatase 1 mediates alcohol-induced ciliary dysfunction. Sci Rep 2018; 8:9701. [PMID: 29946131 PMCID: PMC6018795 DOI: 10.1038/s41598-018-27924-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 06/01/2018] [Indexed: 01/13/2023] Open
Abstract
Alcohol use disorder (AUD) is a strong risk factor for development and mortality of pneumonia. Mucociliary clearance, a key innate defense against pneumonia, is perturbed by alcohol use. Specifically, ciliated airway cells lose the ability to increase ciliary beat frequency (CBF) to β-agonist stimulation after prolonged alcohol exposure. We previously found that alcohol activates protein phosphatase 1 (PP1) through a redox mechanism to cause ciliary dysfunction. Therefore, we hypothesized that PP1 activity is enhanced by alcohol exposure through an S-nitrosothiol-dependent mechanism resulting in desensitization of CBF stimulation. Bronchoalveolar S-nitrosothiol (SNO) content and tracheal PP1 activity was increased in wild-type (WT) mice drinking alcohol for 6-weeks compared to control mice. In contrast, alcohol drinking did not increase SNO content or PP1 activity in nitric oxide synthase 3-deficient mice. S-nitrosoglutathione induced PP1-dependent CBF desensitization in mouse tracheal rings, cultured cells and isolated cilia. In vitro expression of mutant PP1 (cysteine 155 to alanine) in primary human airway epithelial cells prevented CBF desensitization after prolonged alcohol exposure compared to cells expressing WT PP1. Thus, redox modulation in the airways by alcohol is an important ciliary regulatory mechanism. Pharmacologic strategies to reduce S-nitrosation may enhance mucociliary clearance and reduce pneumonia prevalence, mortality and morbidity with AUD.
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Affiliation(s)
- Michael E Price
- From the Department of Internal Medicine, Pulmonary, Critical Care, Sleep & Allergy Division, University of Nebraska Medical Center, Omaha, NE, USA
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Adam J Case
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Jacqueline A Pavlik
- From the Department of Internal Medicine, Pulmonary, Critical Care, Sleep & Allergy Division, University of Nebraska Medical Center, Omaha, NE, USA
| | - Jane M DeVasure
- From the Department of Internal Medicine, Pulmonary, Critical Care, Sleep & Allergy Division, University of Nebraska Medical Center, Omaha, NE, USA
| | - Todd A Wyatt
- From the Department of Internal Medicine, Pulmonary, Critical Care, Sleep & Allergy Division, University of Nebraska Medical Center, Omaha, NE, USA
- Department of Environmental, Agricultural, and Occupational Health, University of Nebraska Medical Center, Omaha, NE, USA
- Nebraska-Western Iowa VA Healthcare System, Research Service, Omaha, NE, USA
| | - Matthew C Zimmerman
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Joseph H Sisson
- From the Department of Internal Medicine, Pulmonary, Critical Care, Sleep & Allergy Division, University of Nebraska Medical Center, Omaha, NE, USA.
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6
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Roman W, Pimentel MR, Gomes ER. An In Vitro System to Measure the Positioning, Stiffness, and Rupture of the Nucleus in Skeletal Muscle. Methods Mol Biol 2018; 1840:283-293. [PMID: 30141051 DOI: 10.1007/978-1-4939-8691-0_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nuclear positioning plays important roles for certain cellular functions. This is particularly relevant in skeletal muscle cells also known as myofibers in which nuclear positioning defects were shown to hinder muscle function. Myofibers are multinucleated cells with nuclei equally distributed at the periphery of the cell. However, nuclei can be found centrally located during myogenesis before anchoring at the periphery or in certain muscle disorders, either due to regenerating myofibers or defects in nuclear movement. As such, nuclear localization in myofibers (central or peripheral) can be used to assess myofiber maturity, regeneration, or health. To study how nuclei reach the periphery of myofibers during development, we devised a unique protocol to mature myofibers thereby recapitulating later stages of differentiation, including nuclear movement to the periphery. Here we describe how to use this system to study nuclear positioning and other nuclear characteristics such as nuclear stiffness or rupture.
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Affiliation(s)
- William Roman
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Professor Egas Moniz, Lisboa, 1649-028, Portugal
| | - Mafalda R Pimentel
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Professor Egas Moniz, Lisboa, 1649-028, Portugal
| | - Edgar R Gomes
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Professor Egas Moniz, Lisboa, 1649-028, Portugal.
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7
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Krick S, Baumlin N, Aller SP, Aguiar C, Grabner A, Sailland J, Mendes E, Schmid A, Qi L, David NV, Geraghty P, King G, Birket SE, Rowe SM, Faul C, Salathe M. Klotho Inhibits Interleukin-8 Secretion from Cystic Fibrosis Airway Epithelia. Sci Rep 2017; 7:14388. [PMID: 29085059 PMCID: PMC5662572 DOI: 10.1038/s41598-017-14811-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 10/16/2017] [Indexed: 01/08/2023] Open
Abstract
Chronic inflammation is a hallmark of cystic fibrosis (CF) and associated with increased production of transforming growth factor (TGF) β and interleukin (IL)-8. α-klotho (KL), a transmembrane or soluble protein, functions as a co-receptor for Fibroblast Growth Factor (FGF) 23, a known pro-inflammatory, prognostic marker in chronic kidney disease. KL is downregulated in airways from COPD patients. We hypothesized that both KL and FGF23 signaling modulate TGF β-induced IL-8 secretion in CF bronchial epithelia. Thus, FGF23 and soluble KL levels were measured in plasma from 48 CF patients and in primary CF bronchial epithelial cells (CF-HBEC). CF patients showed increased FGF23 plasma levels, but KL levels were not different. In CF-HBEC, TGF-β increased KL secretion and upregulated FGF receptor (FGFR) 1. Despite increases in KL, TGF-β also increased IL-8 secretion via activation of FGFR1 and Smad 3 signaling. However, KL excess via overexpression or supplementation decreased IL-8 secretion by inhibiting Smad 3 phosphorylation. Here, we identify a novel signaling pathway contributing to IL-8 secretion in the CF bronchial epithelium with KL functioning as an endocrine and local anti-inflammatory mediator that antagonizes pro-inflammatory actions of FGF23 and TGF-β.
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Affiliation(s)
- Stefanie Krick
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, University of Miami Leonard M. Miller School of Medicine, Miami, FL, 33136, USA.
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL, 35294, USA.
| | - Nathalie Baumlin
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, University of Miami Leonard M. Miller School of Medicine, Miami, FL, 33136, USA
| | - Sheyla Paredes Aller
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, University of Miami Leonard M. Miller School of Medicine, Miami, FL, 33136, USA
| | - Carolina Aguiar
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, University of Miami Leonard M. Miller School of Medicine, Miami, FL, 33136, USA
| | - Alexander Grabner
- Division of Nephrology, Department of Medicine, Duke University School of Medicine, Durham, NC, 27710, USA
| | - Juliette Sailland
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, University of Miami Leonard M. Miller School of Medicine, Miami, FL, 33136, USA
| | - Eliana Mendes
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, University of Miami Leonard M. Miller School of Medicine, Miami, FL, 33136, USA
| | - Andreas Schmid
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, University of Miami Leonard M. Miller School of Medicine, Miami, FL, 33136, USA
| | - Lixin Qi
- Division of Nephrology and Hypertension, Department of Medicine and Center for Translational Metabolism and Health, Institute for Public Health and Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Nicolae V David
- Division of Nephrology and Hypertension, Department of Medicine and Center for Translational Metabolism and Health, Institute for Public Health and Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Patrick Geraghty
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, State University of New York Downstate Medical Center, Brooklyn, NY, USA
| | - Gwendalyn King
- Department of Neurobiology, The University of Alabama at Birmingham, Birmingham, AL, USA
| | - Susan E Birket
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL, 35294, USA
| | - Steven M Rowe
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL, 35294, USA
| | - Christian Faul
- Division of Nephrology and Hypertension, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL, 35294, USA
| | - Matthias Salathe
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, University of Miami Leonard M. Miller School of Medicine, Miami, FL, 33136, USA
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8
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Schmid A, Sailland J, Novak L, Baumlin N, Fregien N, Salathe M. Modulation of Wnt signaling is essential for the differentiation of ciliated epithelial cells in human airways. FEBS Lett 2017; 591:3493-3506. [PMID: 28921507 PMCID: PMC5683904 DOI: 10.1002/1873-3468.12851] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Revised: 08/20/2017] [Accepted: 08/24/2017] [Indexed: 12/20/2022]
Abstract
Wnt signaling is essential for the differentiation of airway epithelial cells during development. Here, we examined the role of Wnt signaling during redifferentiation of ciliated airway epithelial cells in vitro at the air liquid interface as a model of airway epithelial repair. Phases of proliferation and differentiation were defined. Markers of squamous metaplasia and epithelial ciliation were followed while enhancing β‐catenin signaling by blocking glycogen synthase kinase 3β with SB216763 and shRNA as well as inhibiting canonical WNT signaling with apical application of Dickkopf 1 (Dkk1). Our findings indicate that enhanced β‐catenin signaling decreases the number of ciliated cells and causes squamous changes in the epithelium, whereas treatment with DDk1 leads to an increased number of ciliated cells.
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Affiliation(s)
- Andreas Schmid
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, University of Miami School of Medicine, FL, USA
| | - Juliette Sailland
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, University of Miami School of Medicine, FL, USA
| | - Lisa Novak
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, University of Miami School of Medicine, FL, USA
| | - Nathalie Baumlin
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, University of Miami School of Medicine, FL, USA
| | - Nevis Fregien
- Department of Cell Biology, University of Miami School of Medicine, FL, USA
| | - Matthias Salathe
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, University of Miami School of Medicine, FL, USA
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