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Parslow VR, Elmore SA, Cochran RZ, Bolon B, Mahler B, Sabio D, Lubeck BA. Histology Atlas of the Developing Mouse Respiratory System From Prenatal Day 9.0 Through Postnatal Day 30. Toxicol Pathol 2024; 52:153-227. [PMID: 39096105 DOI: 10.1177/01926233241252114] [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] [Indexed: 08/04/2024]
Abstract
Respiratory diseases are one of the leading causes of death and disability around the world. Mice are commonly used as models of human respiratory disease. Phenotypic analysis of mice with spontaneous, congenital, inherited, or treatment-related respiratory tract abnormalities requires investigators to discriminate normal anatomic features of the respiratory system from those that have been altered by disease. Many publications describe individual aspects of normal respiratory tract development, primarily focusing on morphogenesis of the trachea and lung. However, a single reference providing detailed low- and high-magnification, high-resolution images of routine hematoxylin and eosin (H&E)-stained sections depicting all major structures of the entire developing murine respiratory system does not exist. The purpose of this atlas is to correct this deficiency by establishing one concise reference of high-resolution color photomicrographs from whole-slide scans of H&E-stained tissue sections. The atlas has detailed descriptions and well-annotated images of the developing mouse upper and lower respiratory tracts emphasizing embryonic days (E) 9.0 to 18.5 and major early postnatal events. The selected images illustrate the main structures and events at key developmental stages and thus should help investigators both confirm the chronological age of mouse embryos and distinguish normal morphology as well as structural (cellular and organ) abnormalities.
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Affiliation(s)
| | - Susan A Elmore
- Experimental Pathology Laboratories, Inc., Research Triangle Park, North Carolina, USA
| | - Robert Z Cochran
- National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, USA
| | | | - Beth Mahler
- Experimental Pathology Laboratories, Inc., Research Triangle Park, North Carolina, USA
| | - David Sabio
- Experimental Pathology Laboratories, Inc., Research Triangle Park, North Carolina, USA
| | - Beth A Lubeck
- National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, USA
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Yin Y, Koenitzer JR, Patra D, Dietmann S, Bayguinov P, Hagan AS, Ornitz DM. Identification of a myofibroblast differentiation program during neonatal lung development. Development 2024; 151:dev202659. [PMID: 38602479 PMCID: PMC11165721 DOI: 10.1242/dev.202659] [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: 12/26/2023] [Accepted: 03/25/2024] [Indexed: 04/12/2024]
Abstract
Alveologenesis is the final stage of lung development in which the internal surface area of the lung is increased to facilitate efficient gas exchange in the mature organism. The first phase of alveologenesis involves the formation of septal ridges (secondary septae) and the second phase involves thinning of the alveolar septa. Within secondary septa, mesenchymal cells include a transient population of alveolar myofibroblasts (MyoFBs) and a stable but poorly described population of lipid-rich cells that have been referred to as lipofibroblasts or matrix fibroblasts (MatFBs). Using a unique Fgf18CreER lineage trace mouse line, cell sorting, single-cell RNA sequencing and primary cell culture, we have identified multiple subtypes of mesenchymal cells in the neonatal lung, including an immature progenitor cell that gives rise to mature MyoFB. We also show that the endogenous and targeted ROSA26 locus serves as a sensitive reporter for MyoFB maturation. These studies identify a MyoFB differentiation program that is distinct from other mesenchymal cell types and increases the known repertoire of mesenchymal cell types in the neonatal lung.
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Affiliation(s)
- Yongjun Yin
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Jeffrey R. Koenitzer
- Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Debabrata Patra
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Sabine Dietmann
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
- Institute for Informatics, Data Science and Biostatistics, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Peter Bayguinov
- Department of Neuroscience, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Andrew S. Hagan
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - David M. Ornitz
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
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3
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Zhang K, Yao E, Aung T, Chuang PT. The alveolus: Our current knowledge of how the gas exchange unit of the lung is constructed and repaired. Curr Top Dev Biol 2024; 159:59-129. [PMID: 38729684 DOI: 10.1016/bs.ctdb.2024.01.002] [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] [Indexed: 05/12/2024]
Abstract
The mammalian lung completes its last step of development, alveologenesis, to generate sufficient surface area for gas exchange. In this process, multiple cell types that include alveolar epithelial cells, endothelial cells, and fibroblasts undergo coordinated cell proliferation, cell migration and/or contraction, cell shape changes, and cell-cell and cell-matrix interactions to produce the gas exchange unit: the alveolus. Full functioning of alveoli also involves immune cells and the lymphatic and autonomic nervous system. With the advent of lineage tracing, conditional gene inactivation, transcriptome analysis, live imaging, and lung organoids, our molecular understanding of alveologenesis has advanced significantly. In this review, we summarize the current knowledge of the constituents of the alveolus and the molecular pathways that control alveolar formation. We also discuss how insight into alveolar formation may inform us of alveolar repair/regeneration mechanisms following lung injury and the pathogenic processes that lead to loss of alveoli or tissue fibrosis.
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Affiliation(s)
- Kuan Zhang
- Cardiovascular Research Institute, University of California, San Francisco, CA, United States
| | - Erica Yao
- Cardiovascular Research Institute, University of California, San Francisco, CA, United States
| | - Thin Aung
- Cardiovascular Research Institute, University of California, San Francisco, CA, United States
| | - Pao-Tien Chuang
- Cardiovascular Research Institute, University of California, San Francisco, CA, United States.
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4
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Yin Y, Koenitzer JR, Patra D, Dietmann S, Bayguinov P, Hagan AS, Ornitz DM. Identification of a myofibroblast differentiation program during neonatal lung development. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.28.573370. [PMID: 38234814 PMCID: PMC10793446 DOI: 10.1101/2023.12.28.573370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
Alveologenesis is the final stage of lung development in which the internal surface area of the lung is increased to facilitate efficient gas exchange in the mature organism. The first phase of alveologenesis involves the formation of septal ridges (secondary septae) and the second phase involves thinning of the alveolar septa. Within secondary septa, mesenchymal cells include a transient population of alveolar myofibroblasts (MyoFB) and a stable but poorly described population of lipid rich cells that have been referred to as lipofibroblasts or matrix fibroblasts (MatFB). Using a unique Fgf18CreER lineage trace mouse line, cell sorting, single cell RNA sequencing, and primary cell culture, we have identified multiple subtypes of mesenchymal cells in the neonatal lung, including an immature progenitor cell that gives rise to mature MyoFB. We also show that the endogenous and targeted ROSA26 locus serves as a sensitive reporter for MyoFB maturation. These studies identify a myofibroblast differentiation program that is distinct form other mesenchymal cells types and increases the known repertoire of mesenchymal cell types in the neonatal lung.
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Affiliation(s)
- Yongjun Yin
- Departments of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110
| | | | - Debabrata Patra
- Departments of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110
| | - Sabine Dietmann
- Departments of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110
- Institute for Informatics, Data Science & Biostatistics, Washington University School of Medicine, St. Louis, MO 63110
| | - Peter Bayguinov
- Neuroscience, Washington University School of Medicine, St. Louis, MO 63110
| | - Andrew S. Hagan
- Departments of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110
| | - David M. Ornitz
- Departments of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110
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5
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Schütz K, Schmidt A, Schwerk N, Renz DM, Gerard B, Schaefer E, Antal MC, Peters S, Griese M, Rapp CK, Engels H, Cremer K, Bergmann AK, Schmidt G, Auber B, Kamp JC, Laenger F, von Hardenberg S. Variants in FGF10 cause early onset of severe childhood interstitial lung disease: A detailed description of four affected children. Pediatr Pulmonol 2023; 58:3095-3105. [PMID: 37560881 DOI: 10.1002/ppul.26627] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 07/17/2023] [Accepted: 07/24/2023] [Indexed: 08/11/2023]
Abstract
INTRODUCTION Fibroblast growth factor 10 (FGF10) is a signaling molecule with a well-established role for lung branching morphogenesis. Rare heterozygous, deleterious variants in the FGF10 gene are known causes of the lacrimo-auriculo-dento-digital (LADD) syndrome and aplasia of lacrimal and salivary glands. Previous studies indicate that pathogenic variants in FGF10 can cause childhood Interstitial Lung Disease (chILD) due to severe diffuse developmental disorders of the lung, but detailed reports on clinical presentation and follow-up of affected children are lacking. METHODS We describe four children with postnatal onset of chILD and heterozygous variants in FGF10, each detected by exome or whole genome sequencing. RESULTS All children presented with postnatal respiratory failure. Two children died within the first 2 days of life, one patient died at age of 12 years due to right heart failure related to severe pulmonary hypertension (PH) and one patient is alive at age of 6 years, but still symptomatic. Histopathological analysis of lung biopsies from the two children with early postpartum demise revealed diffuse developmental disorder representing acinar dysplasia and interstitial fibrosis. Sequential biopsies of the child with survival until the age of 12 years revealed alveolar simplification and progressive interstitial fibrosis. DISCUSSION Our report extends the phenotype of FGF10-related disorders to early onset chILD with progressive interstitial lung fibrosis and PH. Therefore, FGF10-related disorder should be considered even without previously described syndromic stigmata in children with postnatal respiratory distress, not only when leading to death in the neonatal period but also in case of persistent respiratory complaints and PH.
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Affiliation(s)
- Katharina Schütz
- Clinic for Pediatric Pneumology, Allergology and Neonatology, Hannover Medical School, Hannover, Germany
| | - Axel Schmidt
- Institute of Human Genetics, School of Medicine & University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Nicolaus Schwerk
- Clinic for Pediatric Pneumology, Allergology and Neonatology, Hannover Medical School, Hannover, Germany
- German Center for Lung Research (DZL), Munich, Germany
| | - Diane Miriam Renz
- Department of Pediatric Radiology, Hannover Medical School, Institute of Diagnostic and Interventional Radiology, Hannover, Germany
| | - Benedicte Gerard
- Laboratoires de Diagnostic Génétique, Unité de génétique moléculaire, Nouvel Hôpital Civil, Strasbourg, Cedex, France
| | - Elise Schaefer
- Laboratoires de Diagnostic Génétique, Unité de génétique moléculaire, Nouvel Hôpital Civil, Strasbourg, Cedex, France
| | - Maria Cristina Antal
- UF6349 fœtopathologie, Département de Pathologie, Hôpitaux Universitaires, Strasbourg, France
| | - Sophia Peters
- Institute of Human Genetics, School of Medicine & University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Matthias Griese
- Department of Pediatric Pneumology, German Center for Lung Research (DZL), Dr von Hauner Children's Hospital, Ludwig-Maximilians-University, Munich, Germany
| | - Christina K Rapp
- Department of Pediatric Pneumology, German Center for Lung Research (DZL), Dr von Hauner Children's Hospital, Ludwig-Maximilians-University, Munich, Germany
| | - Hartmut Engels
- Institute of Human Genetics, School of Medicine & University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Kirsten Cremer
- Institute of Human Genetics, School of Medicine & University Hospital Bonn, University of Bonn, Bonn, Germany
| | | | - Gunnar Schmidt
- Department of Human Genetics, Hannover Medical School, Hannover, Germany
| | - Bernd Auber
- Department of Human Genetics, Hannover Medical School, Hannover, Germany
| | - Jan C Kamp
- German Center for Lung Research (DZL), Munich, Germany
- Department of Respiratory Medicine, Hannover Medical School, Hannover, Germany
| | - Florian Laenger
- Hannover Medical School, Institute of Pathology, Hannover, Germany
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6
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Chong L, Ahmadvand N, Noori A, Lv Y, Chen C, Bellusci S, Zhang JS. Injury activated alveolar progenitors (IAAPs): the underdog of lung repair. Cell Mol Life Sci 2023; 80:145. [PMID: 37166489 PMCID: PMC10173924 DOI: 10.1007/s00018-023-04789-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 04/11/2023] [Accepted: 04/24/2023] [Indexed: 05/12/2023]
Abstract
Alveolar epithelial type II cells (AT2s) together with AT1s constitute the epithelial lining of lung alveoli. In contrast to the large flat AT1s, AT2s are cuboidal and smaller. In addition to surfactant production, AT2s also serve as prime alveolar progenitors in homeostasis and play an important role during regeneration/repair. Based on different lineage tracing strategies in mice and single-cell transcriptomic analysis, recent reports highlight the heterogeneous nature of AT2s. These studies present compelling evidence for the presence of stable or transitory AT2 subpopulations with distinct marker expression, signaling pathway activation and functional properties. Despite demonstrated progenitor potentials of AT2s in maintaining homeostasis, through self-renewal and differentiation to AT1s, the exact identity, full progenitor potential and regulation of these progenitor cells, especially in the context of human diseases remain unclear. We recently identified a novel subset of AT2 progenitors named "Injury-Activated Alveolar Progenitors" (IAAPs), which express low levels of Sftpc, Sftpb, Sftpa1, Fgfr2b and Etv5, but are highly enriched for the expression of the surface receptor programmed cell death-ligand 1 (Pd-l1). IAAPs are quiescent during lung homeostasis but activated upon injury with the potential to proliferate and differentiate into AT2s. Significantly, a similar population of PD-L1 positive cells expressing intermediate levels of SFTPC are found to be expanded in human IPF lungs. We summarize here the current understanding of this newly discovered AT2 progenitor subpopulation and also try to reconcile the relationship between different AT2 stem cell subpopulations regarding their progenitor potential, regulation, and relevance to disease pathogenesis and therapeutic interventions.
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Affiliation(s)
- Lei Chong
- Department of Pediatric Respiratory Medicine, National Key Clinical Specialty of Pediatric Respiratory Medicine, Institute of Pediatrics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, Zhejiang, China
| | - Negah Ahmadvand
- Department of Cell Biology, Duke University School of Medicine, Durham, NC27710, USA
| | - Afshin Noori
- Cardio Pulmonary Institute, Department of Pulmonary and Critical Care Medicine and Infectious Diseases, Universities of Giessen and Marburg Lung Center, Justus-Liebig University Giessen, 35392, Giessen, Germany
| | - Yuqing Lv
- Medical Research Center, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China
- The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou, 324000, Zhejiang, China
| | - Chengshui Chen
- The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou, 324000, Zhejiang, China
- Zhejiang Provincial Key Laboratory of Interventional Pulmonology and Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China
| | - Saverio Bellusci
- The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou, 324000, Zhejiang, China.
- Laboratory of Extracellular Matrix Remodelling, Cardio Pulmonary Institute, Department of Pulmonary and Critical Care Medicine and Infectious Diseases, Universities of Giessen and Marburg Lung Center, Member of the German Lung Center, Justus-Liebig University Giessen, 35392, Giessen, Germany.
| | - Jin-San Zhang
- Medical Research Center, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China.
- The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou, 324000, Zhejiang, China.
- Zhejiang Provincial Key Laboratory of Interventional Pulmonology and Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China.
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7
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Chung YL, Laiman V, Tsao PN, Chen CM, Heriyanto DS, Chung KF, Chuang KJ, Chuang HC. Diesel exhaust particles inhibit lung branching morphogenesis via the YAP/TAZ pathway. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 861:160682. [PMID: 36481141 DOI: 10.1016/j.scitotenv.2022.160682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 11/21/2022] [Accepted: 11/30/2022] [Indexed: 06/17/2023]
Abstract
Prenatal exposure to air pollution may associated with inhibition of lung development in the child, however the possible mechanism is unclear. We investigated the effects of traffic-related diesel exhaust particle (DEP) exposure on fetal lung branching morphogenesis and elucidate the possible mechanism. Ex vivo fetal lungs collected from ICR mice at an age of 11.5 embryonic (E) days were exposed to DEPs at 0 (control), 10, and 50 μg/mL and branching morphogenesis was measured for 3 days. Normal IMR-90 human fetal lung fibroblast cells were exposed to DEPs at 0 (control), 10, and 50 μg/mL for 24 h. We observed that DEP exposure significantly inhibited lung branching morphogenesis with reduced lung branching ratios and surface areas on day 3. RNA sequencing (RNA-Seq) showed that DEP increased the inflammatory response and impaired lung development-related gene expressions. DEPs significantly decreased Yes-associated protein (YAP), phosphorylated (p)-YAP, transcriptional coactivator with a PDZ-binding motif (TAZ), and p-TAZ in IMR-90 cells at 10 and 50 μg/mL. Treatment of fetal lungs with the YAP inhibitor, PFI-2, also demonstrated restricted lung branching development similar to that of DEP exposure, with a significantly decreased lung branching ratio on day 3. DEP exposure significantly decreased the lung branching modulators fibroblast growth factor receptor 2 (FGFR2), sex-determining region Y-box 2 (SOX2), and SOX9 in IMR-90 cells at 10 and 50 μg/mL. Fetal lung immunofluorescence staining showed that DEP decreased SOX2 expression in fibronectin+ fibroblasts. DEP exposure decreased the cellular senescence regulator, p-sirtuin 1 (SIRT1)/SIRT1 in IMR-90 cells, with RNA-Seq showing impaired telomere maintenance. DEP exposure impaired fetal lung growth during the pseudoglandular stage through dysregulating the Hippo signaling pathway, causing fibroblast lung branching restriction and early senescence. Prenatal exposure to traffic-related air pollution has adverse effects on fetal lung development.
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Affiliation(s)
- Yu-Ling Chung
- School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan; Division of Pulmonary Medicine, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
| | - Vincent Laiman
- International Ph.D. Program in Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Department of Anatomical Pathology, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada - Dr. Sardjito Hospital, Yogyakarta, Indonesia
| | - Po-Nien Tsao
- Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan; The Research Center for Developmental Biology and Regenerative Medicine, National Taiwan University, Taipei, Taiwan
| | - Chung-Ming Chen
- Department of Pediatrics, Taipei Medical University Hospital, Taipei, Taiwan; Department of Pediatrics, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Didik Setyo Heriyanto
- Department of Anatomical Pathology, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada - Dr. Sardjito Hospital, Yogyakarta, Indonesia
| | - Kian Fan Chung
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Kai-Jen Chuang
- School of Public Health, College of Public Health, Taipei Medical University, Taipei, Taiwan; Department of Public Health, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Hsiao-Chi Chuang
- School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan; Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan; Cell Physiology and Molecular Image Research Center, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan; Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan.
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8
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Zhang K, Yao E, Chuang E, Chen B, Chuang EY, Chuang PT. mTORC1 signaling facilitates differential stem cell differentiation to shape the developing murine lung and is associated with mitochondrial capacity. Nat Commun 2022; 13:7252. [PMID: 36433959 PMCID: PMC9700781 DOI: 10.1038/s41467-022-34763-y] [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: 01/02/2022] [Accepted: 11/07/2022] [Indexed: 11/26/2022] Open
Abstract
Formation of branched organs requires sequential differentiation of stem cells. In this work, we find that the conducting airways derived from SOX2+ progenitors in the murine lungs fail to form without mTOR complex 1 (mTORC1) signaling and are replaced by lung cysts. Proximal-distal patterning through transitioning of distal SOX9+ progenitors to proximal SOX2+ cells is disrupted. Mitochondria number and ATP production are reduced. Compromised mitochondrial capacity results in a similar defect as that in mTORC1-deficient lungs. This suggests that mTORC1 promotes differentiation of SOX9+ progenitors to form the conducting airways by modulating mitochondrial capacity. Surprisingly, in all mutants, saccules are produced from lung cysts at the proper developmental time despite defective branching. SOX9+ progenitors also differentiate into alveolar epithelial type I and type II cells within saccules. These findings highlight selective utilization of energy and regulatory programs during stem cell differentiation to produce distinct structures of the mammalian lungs.
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Affiliation(s)
- Kuan Zhang
- grid.266102.10000 0001 2297 6811Cardiovascular Research Institute, University of California, San Francisco, CA USA
| | - Erica Yao
- grid.266102.10000 0001 2297 6811Cardiovascular Research Institute, University of California, San Francisco, CA USA
| | - Ethan Chuang
- grid.266102.10000 0001 2297 6811Cardiovascular Research Institute, University of California, San Francisco, CA USA
| | - Biao Chen
- grid.266102.10000 0001 2297 6811Cardiovascular Research Institute, University of California, San Francisco, CA USA
| | - Evelyn Y. Chuang
- grid.266102.10000 0001 2297 6811Cardiovascular Research Institute, University of California, San Francisco, CA USA
| | - Pao-Tien Chuang
- grid.266102.10000 0001 2297 6811Cardiovascular Research Institute, University of California, San Francisco, CA USA
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9
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Gao F, Li C, Smith SM, Peinado N, Kohbodi G, Tran E, Loh YHE, Li W, Borok Z, Minoo P. Decoding the IGF1 signaling gene regulatory network behind alveologenesis from a mouse model of bronchopulmonary dysplasia. eLife 2022; 11:e77522. [PMID: 36214448 PMCID: PMC9581530 DOI: 10.7554/elife.77522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 10/07/2022] [Indexed: 11/13/2022] Open
Abstract
Lung development is precisely controlled by underlying gene regulatory networks (GRN). Disruption of genes in the network can interrupt normal development and cause diseases such as bronchopulmonary dysplasia (BPD) - a chronic lung disease in preterm infants with morbid and sometimes lethal consequences characterized by lung immaturity and reduced alveolarization. Here, we generated a transgenic mouse exhibiting a moderate severity BPD phenotype by blocking IGF1 signaling in secondary crest myofibroblasts (SCMF) at the onset of alveologenesis. Using approaches mirroring the construction of the model GRN in sea urchin's development, we constructed the IGF1 signaling network underlying alveologenesis using this mouse model that phenocopies BPD. The constructed GRN, consisting of 43 genes, provides a bird's eye view of how the genes downstream of IGF1 are regulatorily connected. The GRN also reveals a mechanistic interpretation of how the effects of IGF1 signaling are transduced within SCMF from its specification genes to its effector genes and then from SCMF to its neighboring alveolar epithelial cells with WNT5A and FGF10 signaling as the bridge. Consistently, blocking WNT5A signaling in mice phenocopies BPD as inferred by the network. A comparative study on human samples suggests that a GRN of similar components and wiring underlies human BPD. Our network view of alveologenesis is transforming our perspective to understand and treat BPD. This new perspective calls for the construction of the full signaling GRN underlying alveologenesis, upon which targeted therapies for this neonatal chronic lung disease can be viably developed.
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Affiliation(s)
- Feng Gao
- Division of Neonatology, Department of Pediatrics, University of Southern CaliforniaLos AngelesUnited States
| | - Changgong Li
- Division of Neonatology, Department of Pediatrics, University of Southern CaliforniaLos AngelesUnited States
| | - Susan M Smith
- Division of Neonatology, Department of Pediatrics, University of Southern CaliforniaLos AngelesUnited States
| | - Neil Peinado
- Division of Neonatology, Department of Pediatrics, University of Southern CaliforniaLos AngelesUnited States
| | - Golenaz Kohbodi
- Division of Neonatology, Department of Pediatrics, University of Southern CaliforniaLos AngelesUnited States
| | - Evelyn Tran
- Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern CaliforniaLos AngelesUnited States
- Department of Biochemistry and Molecular Medicine, Keck School of Medicine, University of Southern CaliforniaLos AngelesUnited States
| | - Yong-Hwee Eddie Loh
- Norris Medical Library, University of Southern CaliforniaLos AngelesUnited States
| | - Wei Li
- Department of Nephrology, Jiangsu Provincial Hospital of Traditional Chinese MedicineNanjingChina
| | - Zea Borok
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of California, San DiegoSan DiegoUnited States
| | - Parviz Minoo
- Division of Neonatology, Department of Pediatrics, University of Southern CaliforniaLos AngelesUnited States
- Hastings Center for Pulmonary Research, Keck School of Medicine, University of Southern CaliforniaLos AngelesUnited States
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10
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Ornitz DM, Itoh N. New developments in the biology of fibroblast growth factors. WIREs Mech Dis 2022; 14:e1549. [PMID: 35142107 PMCID: PMC10115509 DOI: 10.1002/wsbm.1549] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 11/08/2021] [Accepted: 11/09/2021] [Indexed: 01/28/2023]
Abstract
The fibroblast growth factor (FGF) family is composed of 18 secreted signaling proteins consisting of canonical FGFs and endocrine FGFs that activate four receptor tyrosine kinases (FGFRs 1-4) and four intracellular proteins (intracellular FGFs or iFGFs) that primarily function to regulate the activity of voltage-gated sodium channels and other molecules. The canonical FGFs, endocrine FGFs, and iFGFs have been reviewed extensively by us and others. In this review, we briefly summarize past reviews and then focus on new developments in the FGF field since our last review in 2015. Some of the highlights in the past 6 years include the use of optogenetic tools, viral vectors, and inducible transgenes to experimentally modulate FGF signaling, the clinical use of small molecule FGFR inhibitors, an expanded understanding of endocrine FGF signaling, functions for FGF signaling in stem cell pluripotency and differentiation, roles for FGF signaling in tissue homeostasis and regeneration, a continuing elaboration of mechanisms of FGF signaling in development, and an expanding appreciation of roles for FGF signaling in neuropsychiatric diseases. This article is categorized under: Cardiovascular Diseases > Molecular and Cellular Physiology Neurological Diseases > Molecular and Cellular Physiology Congenital Diseases > Stem Cells and Development Cancer > Stem Cells and Development.
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Affiliation(s)
- David M Ornitz
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Nobuyuki Itoh
- Kyoto University Graduate School of Pharmaceutical Sciences, Sakyo, Kyoto, Japan
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11
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A functional circuit formed by the autonomic nerves and myofibroblasts controls mammalian alveolar formation for gas exchange. Dev Cell 2022; 57:1566-1581.e7. [PMID: 35714603 DOI: 10.1016/j.devcel.2022.05.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 04/14/2022] [Accepted: 05/26/2022] [Indexed: 11/23/2022]
Abstract
Alveolar formation increases the surface area for gas exchange. A molecular understanding of alveologenesis remains incomplete. Here, we show that the autonomic nerve and alveolar myofibroblast form a functional unit in mice. Myofibroblasts secrete neurotrophins to promote neurite extension/survival, whereas neurotransmitters released from autonomic terminals are necessary for myofibroblast proliferation and migration, a key step in alveologenesis. This establishes a functional link between autonomic innervation and alveolar formation. We also discover that planar cell polarity (PCP) signaling employs a Wnt-Fz/Ror-Vangl cascade to regulate the cytoskeleton and neurotransmitter trafficking/release from the terminals of autonomic nerves. This represents a new aspect of PCP signaling in conferring cellular properties. Together, these studies offer molecular insight into how autonomic activity controls alveolar formation. Our work also illustrates the fundamental principle of how two tissues (e.g., nerves and lungs) interact to build alveoli at the organismal level.
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12
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Varghese B, Ling Z, Ren X. Reconstructing the pulmonary niche with stem cells: a lung story. Stem Cell Res Ther 2022; 13:161. [PMID: 35410254 PMCID: PMC8996210 DOI: 10.1186/s13287-022-02830-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 03/23/2022] [Indexed: 12/25/2022] Open
Abstract
The global burden of pulmonary disease highlights an overwhelming need in improving our understanding of lung development, disease, and treatment. It also calls for further advances in our ability to engineer the pulmonary system at cellular and tissue levels. The discovery of human pluripotent stem cells (hPSCs) offsets the relative inaccessibility of human lungs for studying developmental programs and disease mechanisms, all the while offering a potential source of cells and tissue for regenerative interventions. This review offers a perspective on where the lung stem cell field stands in terms of accomplishing these ambitious goals. We will trace the known stages and pathways involved in in vivo lung development and how they inspire the directed differentiation of stem and progenitor cells in vitro. We will also recap the efforts made to date to recapitulate the lung stem cell niche in vitro via engineered cell-cell and cell-extracellular matrix (ECM) interactions.
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Affiliation(s)
- Barbie Varghese
- Department of Biomedical Engineering, Carnegie Mellon University, Scott Hall 4N111, 5000 Forbes Avenue, Pittsburgh, PA, 15213, USA
| | - Zihan Ling
- Department of Biomedical Engineering, Carnegie Mellon University, Scott Hall 4N111, 5000 Forbes Avenue, Pittsburgh, PA, 15213, USA
| | - Xi Ren
- Department of Biomedical Engineering, Carnegie Mellon University, Scott Hall 4N111, 5000 Forbes Avenue, Pittsburgh, PA, 15213, USA.
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13
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Zhang K, Yao E, Chen B, Chuang E, Wong J, Seed RI, Nishimura SL, Wolters PJ, Chuang PT. Acquisition of cellular properties during alveolar formation requires differential activity and distribution of mitochondria. eLife 2022; 11:e68598. [PMID: 35384838 PMCID: PMC9183236 DOI: 10.7554/elife.68598] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Accepted: 04/05/2022] [Indexed: 11/13/2022] Open
Abstract
Alveolar formation requires coordinated movement and interaction between alveolar epithelial cells, mesenchymal myofibroblasts, and endothelial cells/pericytes to produce secondary septa. These processes rely on the acquisition of distinct cellular properties to enable ligand secretion for cell-cell signaling and initiate morphogenesis through cellular contraction, cell migration, and cell shape change. In this study, we showed that mitochondrial activity and distribution play a key role in bestowing cellular functions on both alveolar epithelial cells and mesenchymal myofibroblasts for generating secondary septa to form alveoli in mice. These results suggest that mitochondrial function is tightly regulated to empower cellular machineries in a spatially specific manner. Indeed, such regulation via mitochondria is required for secretion of ligands, such as platelet-derived growth factor, from alveolar epithelial cells to influence myofibroblast proliferation and contraction/migration. Moreover, mitochondrial function enables myofibroblast contraction/migration during alveolar formation. Together, these findings yield novel mechanistic insights into how mitochondria regulate pivotal steps of alveologenesis. They highlight selective utilization of energy in cells and diverse energy demands in different cellular processes during development. Our work serves as a paradigm for studying how mitochondria control tissue patterning.
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Affiliation(s)
- Kuan Zhang
- Cardiovascular Research Institute, University of CaliforniaSan FranciscoUnited States
| | - Erica Yao
- Cardiovascular Research Institute, University of CaliforniaSan FranciscoUnited States
| | - Biao Chen
- Cardiovascular Research Institute, University of CaliforniaSan FranciscoUnited States
| | - Ethan Chuang
- Cardiovascular Research Institute, University of CaliforniaSan FranciscoUnited States
| | - Julia Wong
- Cardiovascular Research Institute, University of CaliforniaSan FranciscoUnited States
| | - Robert I Seed
- Department of Pathology, University of CaliforniaSan FranciscoUnited States
| | | | - Paul J Wolters
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine, University of CaliforniaSan FranciscoUnited States
| | - Pao-Tien Chuang
- Cardiovascular Research Institute, University of CaliforniaSan FranciscoUnited States
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14
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Cahill KM, Gartia MR, Sahu S, Bergeron SR, Heffernan LM, Paulsen DB, Penn AL, Noël A. In utero exposure to electronic-cigarette aerosols decreases lung fibrillar collagen content, increases Newtonian resistance and induces sex-specific molecular signatures in neonatal mice. Toxicol Res 2022; 38:205-224. [PMID: 35415078 PMCID: PMC8960495 DOI: 10.1007/s43188-021-00103-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 08/04/2021] [Accepted: 08/25/2021] [Indexed: 12/14/2022] Open
Abstract
Approximately 7% of pregnant women in the United States use electronic-cigarette (e-cig) devices during pregnancy. There is, however, no scientific evidence to support e-cig use as being 'safe' during pregnancy. Little is known about the effects of fetal exposures to e-cig aerosols on lung alveologenesis. In the present study, we tested the hypothesis that in utero exposure to e-cig aerosol impairs lung alveologenesis and pulmonary function in neonates. Pregnant BALB/c mice were exposed 2 h a day for 20 consecutive days during gestation to either filtered air or cinnamon-flavored e-cig aerosol (36 mg/mL of nicotine). Lung tissue was collected in offspring during lung alveologenesis on postnatal day (PND) 5 and PND11. Lung function was measured at PND11. Exposure to e-cig aerosol in utero led to a significant decrease in body weights at birth which was sustained through PND5. At PND5, in utero e-cig exposures dysregulated genes related to Wnt signaling and epigenetic modifications in both females (~ 120 genes) and males (40 genes). These alterations were accompanied by reduced lung fibrillar collagen content at PND5-a time point when collagen content is close to its peak to support alveoli formation. In utero exposure to e-cig aerosol also increased the Newtonian resistance of offspring at PND11, suggesting a narrowing of the conducting airways. At PND11, in females, transcriptomic dysregulation associated with epigenetic alterations was sustained (17 genes), while WNT signaling dysregulation was largely resolved (10 genes). In males, at PND11, the expression of only 4 genes associated with epigenetics was dysregulated, while 16 Wnt related-genes were altered. These data demonstrate that in utero exposures to cinnamon-flavored e-cig aerosols alter lung structure and function and induce sex-specific molecular signatures during lung alveologenesis in neonatal mice. This may reflect epigenetic programming affecting lung disease development later in life.
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Affiliation(s)
- Kerin M. Cahill
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Skip Bertman Dr., Baton Rouge, LA 70803 USA
| | - Manas R. Gartia
- Department of Mechanical and Industrial Engineering, Louisiana State University, Baton Rouge, LA 70803 USA
| | - Sushant Sahu
- Department of Chemistry, University of Louisiana at Lafayette, Lafayette, LA 70504 USA
| | - Sarah R. Bergeron
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Skip Bertman Dr., Baton Rouge, LA 70803 USA
| | - Linda M. Heffernan
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Skip Bertman Dr., Baton Rouge, LA 70803 USA
| | - Daniel B. Paulsen
- Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803 USA
| | - Arthur L. Penn
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Skip Bertman Dr., Baton Rouge, LA 70803 USA
| | - Alexandra Noël
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Skip Bertman Dr., Baton Rouge, LA 70803 USA
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15
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Fang Y, Shao H, Wu Q, Wong NC, Tsong N, Sime PJ, Que J. Epithelial Wntless regulates postnatal alveologenesis. Development 2022; 149:273807. [PMID: 34931663 PMCID: PMC8881739 DOI: 10.1242/dev.199505] [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: 02/08/2021] [Accepted: 12/09/2021] [Indexed: 01/12/2023]
Abstract
Alveologenesis requires the coordinated modulation of the epithelial and mesenchymal compartments to generate mature alveolar saccules for efficient gas exchange. However, the molecular mechanisms underlying the epithelial-mesenchymal interaction during alveologenesis are poorly understood. Here, we report that Wnts produced by epithelial cells are crucial for neonatal alveologenesis. Deletion of the Wnt chaperone protein Wntless homolog (Wls) disrupts alveolar formation, resulting in enlarged saccules in Sftpc-Cre/Nkx2.1-Cre; Wlsloxp/loxp mutants. Although commitment of the alveolar epithelium is unaffected, α-SMA+ mesenchymal cells persist in the alveoli, accompanied by increased collagen deposition, and mutants exhibit exacerbated fibrosis following bleomycin challenge. Notably, α-SMA+ cells include a significant number of endothelial cells resembling endothelial to mesenchymal transition (EndMT), which is also present in Ager-CreER; Wlsloxp/loxp mutants following early postnatal Wls deletion. These findings provide initial evidence that epithelial-derived Wnts are crucial for the differentiation of the surrounding mesenchyme during early postnatal alveologenesis.
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Affiliation(s)
- Yinshan Fang
- Division of Digestive and Liver Diseases, Department of Medicine, Columbia Center for Human Development, Columbia University Medical Center, New York, NY 10032, USA
| | - Hongxia Shao
- Division of Digestive and Liver Diseases, Department of Medicine, Columbia Center for Human Development, Columbia University Medical Center, New York, NY 10032, USA,Tianjin Haihe Hospital, Tianjin, Tianjin 300350, China
| | - Qi Wu
- Tianjin Haihe Hospital, Tianjin, Tianjin 300350, China
| | - Neng Chun Wong
- Division of Digestive and Liver Diseases, Department of Medicine, Columbia Center for Human Development, Columbia University Medical Center, New York, NY 10032, USA
| | - Natalie Tsong
- Division of Digestive and Liver Diseases, Department of Medicine, Columbia Center for Human Development, Columbia University Medical Center, New York, NY 10032, USA
| | - Patricia J. Sime
- Department of Internal Medicine, Virginia Commonwealth University in Richmond, Richmond, VA 23298, USA
| | - Jianwen Que
- Division of Digestive and Liver Diseases, Department of Medicine, Columbia Center for Human Development, Columbia University Medical Center, New York, NY 10032, USA,Author for correspondence ()
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16
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Gkatzis K, Panza P, Peruzzo S, Stainier DY. Differentiation of mouse fetal lung alveolar progenitors in serum-free organotypic cultures. eLife 2021; 10:65811. [PMID: 34586063 PMCID: PMC8480975 DOI: 10.7554/elife.65811] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 09/16/2021] [Indexed: 12/17/2022] Open
Abstract
Lung epithelial progenitors differentiate into alveolar type 1 (AT1) and type 2 (AT2) cells. These cells form the air-blood interface and secrete surfactant, respectively, and are essential for lung maturation and function. Current protocols to derive and culture alveolar cells do not faithfully recapitulate the architecture of the distal lung, which influences cell fate patterns in vivo. Here, we report serum-free conditions that allow for growth and differentiation of mouse distal lung epithelial progenitors. We find that Collagen I promotes the differentiation of flattened, polarized AT1 cells. Using these organoids, we performed a chemical screen to investigate WNT signaling in epithelial differentiation. We identify an association between Casein Kinase activity and maintenance of an AT2 expression signature; Casein Kinase inhibition leads to an increase in AT1/progenitor cell ratio. These organoids provide a simplified model of alveolar differentiation and constitute a scalable screening platform to identify and analyze cell differentiation mechanisms.
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Affiliation(s)
- Konstantinos Gkatzis
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Paolo Panza
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Sofia Peruzzo
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Didier Yr Stainier
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
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17
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Thunnissen E, Motoi N, Minami Y, Matsubara D, Timens W, Nakatani Y, Ishikawa Y, Baez-Navarro X, Radonic T, Blaauwgeers H, Borczuk AC, Noguchi M. Elastin in pulmonary pathology: relevance in tumors with lepidic or papillary appearance. A comprehensive understanding from a morphological viewpoint. Histopathology 2021; 80:457-467. [PMID: 34355407 PMCID: PMC9293161 DOI: 10.1111/his.14537] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 07/22/2021] [Accepted: 08/03/2021] [Indexed: 11/08/2022]
Abstract
Elastin and collagen are the main components of the lung connective tissue network, and together provide the lung with elasticity and tensile strength. In pulmonary pathology, elastin staining is used to variable extents in different countries. These uses include evaluation of the pleura in staging, and the distinction of invasion from collapse of alveoli after surgery (iatrogenic collapse). In the latter, elastin staining is used to highlight distorted but pre‐existing alveolar architecture from true invasion. In addition to variable levels of use and experience, the interpretation of elastin staining in some adenocarcinomas leads to interpretative differences between collapsed lepidic patterns and true papillary patterns. This review aims to summarise the existing data on the use of elastin staining in pulmonary pathology, on the basis of literature data and morphological characteristics. The effect of iatrogenic collapse and the interpretation of elastin staining in pulmonary adenocarcinomas is discussed in detail, especially for the distinction between lepidic patterns and papillary carcinoma.
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Affiliation(s)
- Erik Thunnissen
- Department of Pathology, Amsterdam University Medical Center, location VUmc, Amsterdam, the Netherlands
| | - Noriko Motoi
- Dept. of Diagnostic Pathology, National Cancer Center Hospital, Tokyo, Japan
| | - Yuko Minami
- National Organization Hospital Ibarakihigashi National Hospital, The Center of Chest Diseases and Severe Motor & Intellectual Disabilities, Pathology Department, Tokai-mura, Naka-gun, Ibaraki, Japan
| | - Daisuke Matsubara
- Division of Integrative Pathology, Jichi Medical University, Tochigi, Japan
| | - Wim Timens
- University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, the Netherlands
| | - Yukio Nakatani
- Department of Pathology, Yokosuka Kyosai Hospital, Yokosuka, Japan
| | - Yuichi Ishikawa
- Department of Pathology, International University of Health and Welfare, Mita Hospital, Tokyo, Japan
| | | | - Teodora Radonic
- Department of Pathology, Amsterdam University Medical Center, Amsterdam, the Netherlands
| | - Hans Blaauwgeers
- Department of Pathology, OLVG LAB BV, Amsterdam, the Netherlands
| | - Alain C Borczuk
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Masayuki Noguchi
- Department of Pathology, Institute of Basic Medical Sciences, University of Tsukuba, Tsukuba, Japan
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18
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Tong Y, Zhang S, Riddle S, Zhang L, Song R, Yue D. Intrauterine Hypoxia and Epigenetic Programming in Lung Development and Disease. Biomedicines 2021; 9:944. [PMID: 34440150 PMCID: PMC8394854 DOI: 10.3390/biomedicines9080944] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 07/29/2021] [Accepted: 07/30/2021] [Indexed: 11/17/2022] Open
Abstract
Clinically, intrauterine hypoxia is the foremost cause of perinatal morbidity and developmental plasticity in the fetus and newborn infant. Under hypoxia, deviations occur in the lung cell epigenome. Epigenetic mechanisms (e.g., DNA methylation, histone modification, and miRNA expression) control phenotypic programming and are associated with physiological responses and the risk of developmental disorders, such as bronchopulmonary dysplasia. This developmental disorder is the most frequent chronic pulmonary complication in preterm labor. The pathogenesis of this disease involves many factors, including aberrant oxygen conditions and mechanical ventilation-mediated lung injury, infection/inflammation, and epigenetic/genetic risk factors. This review is focused on various aspects related to intrauterine hypoxia and epigenetic programming in lung development and disease, summarizes our current knowledge of hypoxia-induced epigenetic programming and discusses potential therapeutic interventions for lung disease.
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Affiliation(s)
- Yajie Tong
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang 110004, China;
| | - Shuqing Zhang
- School of Pharmacy, China Medical University, Shenyang 110122, China;
| | - Suzette Riddle
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA;
| | - Lubo Zhang
- Lawrence D. Longo, MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA;
| | - Rui Song
- Lawrence D. Longo, MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA;
| | - Dongmei Yue
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang 110004, China;
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19
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Marega M, Chen C, Bellusci S. Cross-Talk Between Inflammation and Fibroblast Growth Factor 10 During Organogenesis and Pathogenesis: Lessons Learnt From the Lung and Other Organs. Front Cell Dev Biol 2021; 9:656883. [PMID: 34136479 PMCID: PMC8201783 DOI: 10.3389/fcell.2021.656883] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 04/19/2021] [Indexed: 11/21/2022] Open
Abstract
The adult human lung is constantly exposed to irritants like particulate matter, toxic chemical compounds, and biological agents (bacteria and viruses) present in the external environment. During breathing, these irritants travel through the bronchi and bronchioles to reach the deeper lung containing the alveoli, which constitute the minimal functional respiratory units. The local biological responses in the alveoli that follow introduction of irritants need to be tightly controlled in order to prevent a massive inflammatory response leading to loss of respiratory function. Cells, cytokines, chemokines and growth factors intervene collectively to re-establish tissue homeostasis, fight the aggression and replace the apoptotic/necrotic cells with healthy cells through proliferation and/or differentiation. Among the important growth factors at play during inflammation, members of the fibroblast growth factor (Fgf) family regulate the repair process. Fgf10 is known to be a key factor for organ morphogenesis and disease. Inflammation is influenced by Fgf10 but can also impact Fgf10 expression per se. Unfortunately, the connection between Fgf10 and inflammation in organogenesis and disease remains unclear. The aim of this review is to highlight the reported players between Fgf10 and inflammation with a focus on the lung and to propose new avenues of research.
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Affiliation(s)
- Manuela Marega
- Key Laboratory of Interventional Pulmonology of Zhejiang Province, Department of Pulmonary and Critical Care Medicine, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,Member of the German Center for Lung Research (DZL), Department of Pulmonary and Critical Care Medicine and Infectious Diseases, Cardio-Pulmonary Institute (CPI), Universities of Giessen and Marburg Lung Center (UGMLC), Justus Liebig University Giessen, Giessen, Germany
| | - Chengshui Chen
- Key Laboratory of Interventional Pulmonology of Zhejiang Province, Department of Pulmonary and Critical Care Medicine, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Saverio Bellusci
- Key Laboratory of Interventional Pulmonology of Zhejiang Province, Department of Pulmonary and Critical Care Medicine, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,Member of the German Center for Lung Research (DZL), Department of Pulmonary and Critical Care Medicine and Infectious Diseases, Cardio-Pulmonary Institute (CPI), Universities of Giessen and Marburg Lung Center (UGMLC), Justus Liebig University Giessen, Giessen, Germany
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20
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McGinn J, Hallou A, Han S, Krizic K, Ulyanchenko S, Iglesias-Bartolome R, England FJ, Verstreken C, Chalut KJ, Jensen KB, Simons BD, Alcolea MP. A biomechanical switch regulates the transition towards homeostasis in oesophageal epithelium. Nat Cell Biol 2021; 23:511-525. [PMID: 33972733 PMCID: PMC7611004 DOI: 10.1038/s41556-021-00679-w] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 04/01/2021] [Indexed: 02/07/2023]
Abstract
Epithelial cells rapidly adapt their behaviour in response to increasing tissue demands. However, the processes that finely control these cell decisions remain largely unknown. The postnatal period covering the transition between early tissue expansion and the establishment of adult homeostasis provides a convenient model with which to explore this question. Here, we demonstrate that the onset of homeostasis in the epithelium of the mouse oesophagus is guided by the progressive build-up of mechanical strain at the organ level. Single-cell RNA sequencing and whole-organ stretching experiments revealed that the mechanical stress experienced by the growing oesophagus triggers the emergence of a bright Krüppel-like factor 4 (KLF4) committed basal population, which balances cell proliferation and marks the transition towards homeostasis in a yes-associated protein (YAP)-dependent manner. Our results point to a simple mechanism whereby mechanical changes experienced at the whole-tissue level are integrated with those sensed at the cellular level to control epithelial cell fate.
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Affiliation(s)
- Jamie McGinn
- Wellcome-MRC Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK
- Department of Oncology, University of Cambridge and Cancer Research UK Cambridge Centre, Cambridge, UK
| | - Adrien Hallou
- Wellcome-MRC Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK
- Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Cambridge, UK
- Cavendish Laboratory, Department of Physics, University of Cambridge, Cambridge, UK
| | - Seungmin Han
- Wellcome-MRC Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK
- Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Cambridge, UK
| | - Kata Krizic
- Biotech Research and Innovation Centre (BRIC), University of Copenhagen, Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Svetlana Ulyanchenko
- Biotech Research and Innovation Centre (BRIC), University of Copenhagen, Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Ramiro Iglesias-Bartolome
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Frances J England
- Wellcome-MRC Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK
| | | | - Kevin J Chalut
- Wellcome-MRC Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK
| | - Kim B Jensen
- Biotech Research and Innovation Centre (BRIC), University of Copenhagen, Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Benjamin D Simons
- Wellcome-MRC Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK
- Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Cambridge, UK
- Department of Applied Mathematics and Theoretical Physics, Centre for Mathematical Sciences, University of Cambridge, Cambridge, UK
| | - Maria P Alcolea
- Wellcome-MRC Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK.
- Department of Oncology, University of Cambridge and Cancer Research UK Cambridge Centre, Cambridge, UK.
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21
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Zhang K, Yao E, Lin C, Chou YT, Wong J, Li J, Wolters PJ, Chuang PT. A mammalian Wnt5a-Ror2-Vangl2 axis controls the cytoskeleton and confers cellular properties required for alveologenesis. eLife 2020; 9:e53688. [PMID: 32394892 PMCID: PMC7217702 DOI: 10.7554/elife.53688] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Accepted: 04/13/2020] [Indexed: 12/18/2022] Open
Abstract
Alveolar formation increases the surface area for gas-exchange and is key to the physiological function of the lung. Alveolar epithelial cells, myofibroblasts and endothelial cells undergo coordinated morphogenesis to generate epithelial folds (secondary septa) to form alveoli. A mechanistic understanding of alveologenesis remains incomplete. We found that the planar cell polarity (PCP) pathway is required in alveolar epithelial cells and myofibroblasts for alveologenesis in mammals. Our studies uncovered a Wnt5a-Ror2-Vangl2 cascade that endows cellular properties and novel mechanisms of alveologenesis. This includes PDGF secretion from alveolar type I and type II cells, cell shape changes of type I cells and migration of myofibroblasts. All these cellular properties are conferred by changes in the cytoskeleton and represent a new facet of PCP function. These results extend our current model of PCP signaling from polarizing a field of epithelial cells to conferring new properties at subcellular levels to regulate collective cell behavior.
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Affiliation(s)
- Kuan Zhang
- Cardiovascular Research Institute, University of California, San FranciscoSan FranciscoUnited States
| | - Erica Yao
- Cardiovascular Research Institute, University of California, San FranciscoSan FranciscoUnited States
| | - Chuwen Lin
- Cardiovascular Research Institute, University of California, San FranciscoSan FranciscoUnited States
| | - Yu-Ting Chou
- Cardiovascular Research Institute, University of California, San FranciscoSan FranciscoUnited States
| | - Julia Wong
- Cardiovascular Research Institute, University of California, San FranciscoSan FranciscoUnited States
| | - Jianying Li
- Cardiovascular Research Institute, University of California, San FranciscoSan FranciscoUnited States
| | - Paul J Wolters
- Cardiovascular Research Institute, University of California, San FranciscoSan FranciscoUnited States
| | - Pao-Tien Chuang
- Cardiovascular Research Institute, University of California, San FranciscoSan FranciscoUnited States
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22
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Lai YT, Chao HW, Lai ACY, Lin SH, Chang YJ, Huang YS. CPEB2-activated PDGFRα mRNA translation contributes to myofibroblast proliferation and pulmonary alveologenesis. J Biomed Sci 2020; 27:52. [PMID: 32295602 PMCID: PMC7160907 DOI: 10.1186/s12929-020-00643-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Accepted: 03/26/2020] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Alveologenesis is the final stage of lung development to form air-exchanging units between alveoli and blood vessels. Genetic susceptibility or hyperoxic stress to perturb this complicated process can cause abnormal enlargement of alveoli and lead to bronchopulmonary dysplasia (BPD)-associated emphysema. Platelet-derived growth factor receptor α (PDGFRα) signaling is crucial for alveolar myofibroblast (MYF) proliferation and its deficiency is associated with risk of BPD, but posttranscriptional mechanisms regulating PDGFRα synthesis during lung development remain largely unexplored. Cytoplasmic polyadenylation element-binding protein 2 (CPEB2) is a sequence-specific RNA-binding protein and translational regulator. Because CPEB2-knockout (KO) mice showed emphysematous phenotypes, we investigated how CPEB2-controlled translation affects pulmonary development and function. METHODS Respiratory and pulmonary functions were measured by whole-body and invasive plethysmography. Histological staining and immunohistochemistry were used to analyze morphology, proliferation, apoptosis and cell densities from postnatal to adult lungs. Western blotting, RNA-immunoprecipitation, reporter assay, primary MYF culture and ectopic expression rescue were performed to demonstrate the role of CPEB2 in PDGFRα mRNA translation and MYF proliferation. RESULTS Adult CPEB2-KO mice showed emphysema-like dysfunction. The alveolar structure in CPEB2-deficient lungs appeared normal at birth but became simplified through the alveolar stage of lung development. In CPEB2-null mice, we found reduced proliferation of MYF progenitors during alveolarization, abnormal deposition of elastin and failure of alveolar septum formation, thereby leading to enlarged pulmonary alveoli. We identified that CPEB2 promoted PDGFRα mRNA translation in MYF progenitors and this positive regulation could be disrupted by H2O2, a hyperoxia-mimetic treatment. Moreover, decreased proliferating ability in KO MYFs due to insufficient PDGFRα expression was rescued by ectopic expression of CPEB2, suggesting an important role of CPEB2 in upregulating PDGFRα signaling for pulmonary alveologenesis. CONCLUSIONS CPEB2-controlled translation, in part through promoting PDGFRα expression, is indispensable for lung development and function. Since defective pulmonary PDGFR signaling is a key feature of human BPD, CPEB2 may be a risk factor for BPD.
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Affiliation(s)
- Yen-Ting Lai
- Institute of Biomedical Sciences, Academia Sinica, 128 Sec. 2, Academia Rd, Taipei, 11529, Taiwan
| | - Hsu-Wen Chao
- Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan.,Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
| | - Alan Chuan-Ying Lai
- Institute of Biomedical Sciences, Academia Sinica, 128 Sec. 2, Academia Rd, Taipei, 11529, Taiwan
| | - Shu-Hui Lin
- Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan.,Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
| | - Ya-Jen Chang
- Institute of Biomedical Sciences, Academia Sinica, 128 Sec. 2, Academia Rd, Taipei, 11529, Taiwan.
| | - Yi-Shuian Huang
- Institute of Biomedical Sciences, Academia Sinica, 128 Sec. 2, Academia Rd, Taipei, 11529, Taiwan.
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23
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Comprehensive anatomic ontologies for lung development: A comparison of alveolar formation and maturation within mouse and human lung. J Biomed Semantics 2019; 10:18. [PMID: 31651362 PMCID: PMC6814058 DOI: 10.1186/s13326-019-0209-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 09/09/2019] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Although the mouse is widely used to model human lung development, function, and disease, our understanding of the molecular mechanisms involved in alveolarization of the peripheral lung is incomplete. Recently, the Molecular Atlas of Lung Development Program (LungMAP) was funded by the National Heart, Lung, and Blood Institute to develop an integrated open access database (known as BREATH) to characterize the molecular and cellular anatomy of the developing lung. To support this effort, we designed detailed anatomic and cellular ontologies describing alveolar formation and maturation in both mouse and human lung. DESCRIPTION While the general anatomic organization of the lung is similar for these two species, there are significant variations in the lung's architectural organization, distribution of connective tissue, and cellular composition along the respiratory tract. Anatomic ontologies for both species were constructed as partonomic hierarchies and organized along the lung's proximal-distal axis into respiratory, vascular, neural, and immunologic components. Terms for developmental and adult lung structures, tissues, and cells were included, providing comprehensive ontologies for application at varying levels of resolution. Using established scientific resources, multiple rounds of comparison were performed to identify common, analogous, and unique terms that describe the lungs of these two species. Existing biological and biomedical ontologies were examined and cross-referenced to facilitate integration at a later time, while additional terms were drawn from the scientific literature as needed. This comparative approach eliminated redundancy and inconsistent terminology, enabling us to differentiate true anatomic variations between mouse and human lungs. As a result, approximately 300 terms for fetal and postnatal lung structures, tissues, and cells were identified for each species. CONCLUSION These ontologies standardize and expand current terminology for fetal and adult lungs, providing a qualitative framework for data annotation, retrieval, and integration across a wide variety of datasets in the BREATH database. To our knowledge, these are the first ontologies designed to include terminology specific for developmental structures in the lung, as well as to compare common anatomic features and variations between mouse and human lungs. These ontologies provide a unique resource for the LungMAP, as well as for the broader scientific community.
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24
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Farajihaye Qazvini F, Samadi N, Saffari M, Emami-Razavi AN, Shirkoohi R. Fibroblast growth factor-10 and epithelial-mesenchymal transition in colorectal cancer. EXCLI JOURNAL 2019; 18:530-539. [PMID: 31611737 PMCID: PMC6785779 DOI: 10.17179/excli2018-1784] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 07/10/2019] [Indexed: 12/12/2022]
Abstract
As an inducer of epithelial-mesenchymal transition (EMT), fibroblast growth factor-10 (FGF-10) has a role in cell proliferation and differentiation in the embryo in addition to invasion and metastasis during carcinogenesis. In this study, we aimed to investigate the FGF-10 gene expression in tumor tissues based on the pathological feature of tumor related to EMT and metastasis. 62 tumors were obtained from 62 colorectal cancer patients during surgery. The pathological characteristics of the patients were carefully collected and classified by Iran National Tumor Bank. To quantify FGF-10 gene expression, RNA extraction, reverse transcription-PCR and real-time PCR were respectively performed. In addition, three colorectal cancer cell lines including LS174T, SW-948 and SW-480 were collected and cultured for further molecular analysis. Consequently, FGF-10 gene expression showed increased expression level in LS174T and SW-948 while it displayed decreased level in SW-480. Considering the tumor samples, we found an upregulation of FGF-10 gene expression in 52.1 % of all tumors in stage III and only in 9.09 % of all tumors in stage I. Also, there were an upregulation of FGF-10 gene expression in 50 % of all positive lymph invasion patients. Besides, FGF-10 gene upregulation was observed in 50 % of all tumors with a size larger than 5 cm (P value < 0.05) and 69 % of all tumors located in the colon (P value < 0.05). To our knowledge, this is the first time that FGF-10 expression is reported based on pathological features of colorectal cancer.
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Affiliation(s)
- Fatemeh Farajihaye Qazvini
- Department of Clinical Biochemistry and Laboratory Sciences, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Group of Genetics, Cancer Research Center, Cancer Institute of Iran, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Nasser Samadi
- Department of Clinical Biochemistry and Laboratory Sciences, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mojtaba Saffari
- Group of Genetics, Cancer Research Center, Cancer Institute of Iran, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Amir Nader Emami-Razavi
- Iran National Tumor Bank, Cancer Institute of Iran, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Shirkoohi
- Group of Genetics, Cancer Research Center, Cancer Institute of Iran, Tehran University of Medical Sciences (TUMS), Tehran, Iran.,Cancer Biology Research Center, Cancer Institute of Iran, Tehran University of Medical Sciences, Tehran, Iran
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25
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Tsubosaka A, Matsushima J, Ota M, Suzuki M, Yonemori Y, Ota S, Yoshino I, Tsushima K, Tatsumi K, Nakatani Y. Whole-lung pathology of pleuroparenchymal fibroelastosis (PPFE) in an explanted lung: Significance of elastic fiber-rich, non-specific interstitial pneumonia-like change in chemotherapy-related PPFE. Pathol Int 2019; 69:547-555. [PMID: 31290582 DOI: 10.1111/pin.12833] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 06/04/2019] [Indexed: 01/03/2023]
Abstract
Pleuroparenchymal fibroelastosis (PPFE) is characterized by upper lobe-predominant subpleural fibroelastosis. Despite its characteristic uneven distribution, detailed whole-lung pathological features of PPFE have rarely been studied. We investigated PPFE in the explanted lungs from a 19-year-old male patient with a history of chemotherapy. Grossly, the explanted lungs showed upper lobe-predominant shrinkage with subpleural and central consolidation. Histologically, fibroelastosis was prominent in the perilobular areas and along the bronchovascular bundles. The other areas of the lung showed diffuse, non-specific interstitial pneumonia (NSIP)-like change with a characteristic increase of septal elastic fibers. In the digital image analysis, the ratio of elastic fibers to whole fibrosis (EF score) was lower in the subpleural areas than in the NSIP-like lesions, but the EF scores of the latter showed no significant difference between upper and middle/lower lobes. In the present case, the diffusely distributed elastic fiber-rich NSIP-like change, probably caused by the earlier chemotherapy, may have been conducive to the development of PPFE. This suggests that some unknown vulnerability of the upper lobe may exist, various primary lesions converging to the upper lobe predominance of PPFE.
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Affiliation(s)
- Ayumu Tsubosaka
- Department of Pathology, Chiba University Hospital, Chiba, Japan.,Department of Diagnostic Pathology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Jun Matsushima
- Department of Pathology, Chiba University Hospital, Chiba, Japan.,Department of Diagnostic Pathology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Masayuki Ota
- Department of Pathology, Chiba University Hospital, Chiba, Japan.,Department of Diagnostic Pathology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Masaki Suzuki
- Department of Pathology, Chiba University Hospital, Chiba, Japan
| | - Yoko Yonemori
- Department of Pathology, Chiba University Hospital, Chiba, Japan.,Department of Diagnostic Pathology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Satoshi Ota
- Department of Pathology, Chiba University Hospital, Chiba, Japan
| | - Ichiro Yoshino
- Department of Thoracic Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Kenji Tsushima
- Department of Respiratory Medicine, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Koichiro Tatsumi
- Department of Respiratory Medicine, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Yukio Nakatani
- Department of Pathology, Chiba University Hospital, Chiba, Japan.,Department of Diagnostic Pathology, Chiba University Graduate School of Medicine, Chiba, Japan
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26
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Correll KA, Edeen KE, Zemans RL, Redente EF, Serban KA, Curran-Everett D, Edelman BL, Mikels-Vigdal A, Mason RJ. Transitional human alveolar type II epithelial cells suppress extracellular matrix and growth factor gene expression in lung fibroblasts. Am J Physiol Lung Cell Mol Physiol 2019; 317:L283-L294. [PMID: 31166130 DOI: 10.1152/ajplung.00337.2018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Epithelial-fibroblast interactions are thought to be very important in the adult lung in response to injury, but the specifics of these interactions are not well defined. We developed coculture systems to define the interactions of adult human alveolar epithelial cells with lung fibroblasts. Alveolar type II cells cultured on floating collagen gels reduced the expression of type 1 collagen (COL1A1) and α-smooth muscle actin (ACTA2) in fibroblasts. They also reduced fibroblast expression of hepatocyte growth factor (HGF), fibroblast growth factor 7 (FGF7, KGF), and FGF10. When type II cells were cultured at an air-liquid interface to maintain high levels of surfactant protein expression, this inhibitory activity was lost. When type II cells were cultured on collagen-coated tissue culture wells to reduce surfactant protein expression further and increase the expression of some type I cell markers, the epithelial cells suppressed transforming growth factor-β (TGF-β)-stimulated ACTA2 and connective tissue growth factor (CTGF) expression in lung fibroblasts. Our results suggest that transitional alveolar type II cells and likely type I cells but not fully differentiated type II cells inhibit matrix and growth factor expression in fibroblasts. These cells express markers of both type II cells and type I cells. This is probably a normal homeostatic mechanism to inhibit the fibrotic response in the resolution phase of wound healing. Defining how transitional type II cells convert activated fibroblasts into a quiescent state and inhibit the effects of TGF-β may provide another approach to limiting the development of fibrosis after alveolar injury.
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Affiliation(s)
| | | | - Rachel L Zemans
- National Jewish Health, Denver, Colorado.,Division of Pulmonary and Critical Care Medicine/Department of Medicine, University of Michigan, Ann Arbor, Michigan
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27
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Assessment of the nitrofen model of congenital diaphragmatic hernia and of the dysregulated factors involved in pulmonary hypoplasia. Pediatr Surg Int 2019; 35:41-61. [PMID: 30386897 DOI: 10.1007/s00383-018-4375-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/18/2018] [Indexed: 02/08/2023]
Abstract
PURPOSE To study pulmonary hypoplasia (PH) associated with congenital diaphragmatic hernia (CDH), investigators have been employing a fetal rat model based on nitrofen administration to dams. Herein, we aimed to: (1) investigate the validity of the model, and (2) synthesize the main biological pathways implicated in the development of PH associated with CDH. METHODS Using a defined strategy, we conducted a systematic review of the literature searching for studies reporting the incidence of CDH or factors involved in PH development. We also searched for PH factor interactions, relevance to lung development and to human PH. RESULTS Of 335 full-text articles, 116 reported the incidence of CDH after nitrofen exposure or dysregulated factors in the lungs of nitrofen-exposed rat fetuses. CDH incidence: 54% (27-85%) fetuses developed a diaphragmatic defect, whereas the whole litter had PH in varying degrees. Downregulated signaling pathways included FGF/FGFR, BMP/BMPR, Sonic Hedgehog and retinoid acid signaling pathway, resulting in a delay in early epithelial differentiation, immature distal epithelium and dysfunctional mesenchyme. CONCLUSIONS The nitrofen model effectively reproduces PH as it disrupts pathways that are critical for lung branching morphogenesis and alveolar differentiation. The low CDH rate confirms that PH is an associated phenomenon rather than the result of mechanical compression alone.
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28
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Shiraishi K, Shichino S, Ueha S, Nakajima T, Hashimoto S, Yamazaki S, Matsushima K. Mesenchymal-Epithelial Interactome Analysis Reveals Essential Factors Required for Fibroblast-Free Alveolosphere Formation. iScience 2018; 11:318-333. [PMID: 30639966 PMCID: PMC6329323 DOI: 10.1016/j.isci.2018.12.022] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 08/30/2018] [Accepted: 12/20/2018] [Indexed: 12/11/2022] Open
Abstract
Lung epithelial cells and fibroblasts are key cell populations in lung development. Fibroblasts support type 2 alveolar epithelial cells (AEC2) in the developing and mature lung. However, fibroblast-AEC2 interactions have not been clearly described. We addressed this in the present study by time course serial analysis of gene expression sequencing (SAGE-seq) of epithelial cells and fibroblasts of developing and mature murine lungs. We identified lung fibroblast-epithelial interactions that potentially regulate alveologenesis and are mediated by fibroblast-expressed ligands and epithelial cell surface receptors. In the epithelial-fibroblast co-culture alveolosphere formation assay, single intervention against fibroblast-expressed ligand or associated signaling cascades promoted or inhibited alveolosphere growth. Adding the ligand-associated molecules fibroblast growth factor 7 and Notch ligand and inhibitors of bone morphogenetic protein 4, transforming growth factor β, and glycogen synthase kinase-3β to the culture medium enabled fibroblast-free alveolosphere formation. The results revealed the essential factors regulating fibroblast-AEC2 interactions.
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Affiliation(s)
- Kazushige Shiraishi
- Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan; Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute of Biomedical Sciences, Tokyo University of Science, Noda 278-0022, Japan
| | - Shigeyuki Shichino
- Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan; Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute of Biomedical Sciences, Tokyo University of Science, Noda 278-0022, Japan
| | - Satoshi Ueha
- Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan; Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute of Biomedical Sciences, Tokyo University of Science, Noda 278-0022, Japan
| | - Takuya Nakajima
- Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan; Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute of Biomedical Sciences, Tokyo University of Science, Noda 278-0022, Japan
| | - Shinichi Hashimoto
- Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan; Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute of Biomedical Sciences, Tokyo University of Science, Noda 278-0022, Japan; Department of Integrative Medicine for Longevity, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan
| | - Satoshi Yamazaki
- Division of Stem Cell Therapy, Center for Stem Cell Biology and Regenerative Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - Kouji Matsushima
- Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan; Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute of Biomedical Sciences, Tokyo University of Science, Noda 278-0022, Japan.
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29
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Wu J, Chu X, Chen C, Bellusci S. Role of Fibroblast Growth Factor 10 in Mesenchymal Cell Differentiation During Lung Development and Disease. Front Genet 2018; 9:545. [PMID: 30487814 PMCID: PMC6246629 DOI: 10.3389/fgene.2018.00545] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 10/26/2018] [Indexed: 12/21/2022] Open
Abstract
During organogenesis and pathogenesis, fibroblast growth factor 10 (Fgf10) regulates mesenchymal cell differentiation in the lung. Different cell types reside in the developing lung mesenchyme. Lineage tracing in vivo was used to characterize these cells during development and disease. Fgf10-positive cells in the early lung mesenchyme differentiate into multiple lineages including smooth muscle cells (SMCs), lipofibroblasts (LIFs) as well as other cells, which still remain to be characterized. Fgf10 signaling has been reported to act both in an autocrine and paracrine fashion. Autocrine Fgf10 signaling is important for the differentiation of LIF progenitors. Interestingly, autocrine Fgf10 signaling also controls the differentiation of pre-adipocytes into mature adipocytes. As the mechanism of action of Fgf10 on adipocyte differentiation via the activation of peroxisome proliferator-activated receptor gamma (Pparγ) signaling is quite well established, this knowledge could be instrumental for identifying drugs capable of sustaining LIF differentiation in the context of lung injury. We propose that enhanced LIF differentiation could be associated with improved repair. On the other hand, paracrine signaling is considered to be critical for the differentiation of alveolar epithelial progenitors during development as well as for the maintenance of the alveolar type 2 (AT2) stem cells during homeostasis. Alveolar myofibroblasts (MYFs), which are another type of mesenchymal cells critical for the process of alveologenesis (the last phase of lung development) express high levels of Fgf10 and are also dependent for their formation on Fgf signaling. The characterization of the progenitors of alveolar MYFs as well the mechanisms involved in their differentiation is paramount as these cells are considered to be critical for lung regeneration. Finally, lineage tracing in the context of lung fibrosis demonstrated a reversible differentiation from LIF to "activated" MYF during fibrosis formation and resolution. FGF10 expression in the lungs of idiopathic pulmonary fibrosis (IPF) vs. donors as well as progressive vs. stable IPF patients supports our conclusion that FGF10 deficiency could be causative for IPF progression. The therapeutic application of recombinant human FGF10 is therefore very promising.
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Affiliation(s)
- Jin Wu
- Institute of Life Sciences, Wenzhou University, Wenzhou, China
| | - Xuran Chu
- Institute of Life Sciences, Wenzhou University, Wenzhou, China
- Excellence Cluster Cardio-Pulmonary System, Universities of Giessen and Marburg Lung Center, Member of the German Center for Lung Research, Justus-Liebig-University Giessen, Giessen, Germany
| | - Chengshui Chen
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Saverio Bellusci
- Institute of Life Sciences, Wenzhou University, Wenzhou, China
- Excellence Cluster Cardio-Pulmonary System, Universities of Giessen and Marburg Lung Center, Member of the German Center for Lung Research, Justus-Liebig-University Giessen, Giessen, Germany
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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30
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Yuan T, Volckaert T, Chanda D, Thannickal VJ, De Langhe SP. Fgf10 Signaling in Lung Development, Homeostasis, Disease, and Repair After Injury. Front Genet 2018; 9:418. [PMID: 30319693 PMCID: PMC6167454 DOI: 10.3389/fgene.2018.00418] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 09/06/2018] [Indexed: 12/15/2022] Open
Abstract
The lung is morphologically structured into a complex tree-like network with branched airways ending distally in a large number of alveoli for efficient oxygen exchange. At the cellular level, the adult lung consists of at least 40–60 different cell types which can be broadly classified into epithelial, endothelial, mesenchymal, and immune cells. Fibroblast growth factor 10 (Fgf10) located in the lung mesenchyme is essential to regulate epithelial proliferation and lineage commitment during embryonic development and post-natal life, and to drive epithelial regeneration after injury. The cells that express Fgf10 in the mesenchyme are progenitors for mesenchymal cell lineages during embryonic development. During adult lung homeostasis, Fgf10 is expressed in mesenchymal stromal niches, between cartilage rings in the upper conducting airways where basal cells normally reside, and in the lipofibroblasts adjacent to alveolar type 2 cells. Fgf10 protects and promotes lung epithelial regeneration after different types of lung injuries. An Fgf10-Hippo epithelial-mesenchymal crosstalk ensures maintenance of stemness and quiescence during homeostasis and basal stem cell (BSC) recruitment to further promote regeneration in response to injury. Fgf10 signaling is dysregulated in different human lung diseases including bronchopulmonary dysplasia (BPD), idiopathic pulmonary fibrosis (IPF), and chronic obstructive pulmonary disease (COPD), suggesting that dysregulation of the FGF10 pathway is critical to the pathogenesis of several human lung diseases.
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Affiliation(s)
- Tingting Yuan
- Division of Pulmonary, Department of Medicine, Allergy and Critical Care Medicine, University of Alabama at Birmingham, Birmingham AL, United States
| | - Thomas Volckaert
- Division of Pulmonary, Department of Medicine, Allergy and Critical Care Medicine, University of Alabama at Birmingham, Birmingham AL, United States
| | - Diptiman Chanda
- Division of Pulmonary, Department of Medicine, Allergy and Critical Care Medicine, University of Alabama at Birmingham, Birmingham AL, United States
| | - Victor J Thannickal
- Division of Pulmonary, Department of Medicine, Allergy and Critical Care Medicine, University of Alabama at Birmingham, Birmingham AL, United States
| | - Stijn P De Langhe
- Division of Pulmonary, Department of Medicine, Allergy and Critical Care Medicine, University of Alabama at Birmingham, Birmingham AL, United States
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31
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Correll KA, Edeen KE, Redente EF, Zemans RL, Edelman BL, Danhorn T, Curran‐Everett D, Mikels‐Vigdal A, Mason RJ. TGF beta inhibits HGF, FGF7, and FGF10 expression in normal and IPF lung fibroblasts. Physiol Rep 2018; 6:e13794. [PMID: 30155985 PMCID: PMC6113132 DOI: 10.14814/phy2.13794] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 06/11/2018] [Accepted: 06/22/2018] [Indexed: 11/24/2022] Open
Abstract
TGF beta is a multifunctional cytokine that is important in the pathogenesis of pulmonary fibrosis. The ability of TGF beta to stimulate smooth muscle actin and extracellular matrix gene expression in fibroblasts is well established. In this report, we evaluated the effect of TGF beta on the expression of HGF, FGF7 (KGF), and FGF10, important growth and survival factors for the alveolar epithelium. These growth factors are important for maintaining type II cells and for restoration of the epithelium after lung injury. Under conditions of normal serum supplementation or serum withdrawal TGF beta inhibited fibroblast expression of HGF, FGF7, and FGF10. We confirmed these observations with genome wide RNA sequencing of the response of control and IPF fibroblasts to TGF beta. In general, gene expression in IPF fibroblasts was similar to control fibroblasts. Reduced expression of HGF, FGF7, and FGF10 is another means whereby TGF beta impairs epithelial healing and promotes fibrosis after lung injury.
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Affiliation(s)
| | | | | | - Rachel L. Zemans
- Division of Pulmonary and Critical Care MedicineDepartment of MedicineUniversity of MichiganAnn ArborMichigan
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32
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Collins JJP, Lithopoulos MA, Dos Santos CC, Issa N, Möbius MA, Ito C, Zhong S, Vadivel A, Thébaud B. Impaired Angiogenic Supportive Capacity and Altered Gene Expression Profile of Resident CD146 + Mesenchymal Stromal Cells Isolated from Hyperoxia-Injured Neonatal Rat Lungs. Stem Cells Dev 2018; 27:1109-1124. [PMID: 29957134 DOI: 10.1089/scd.2017.0145] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD), the most common complication of extreme preterm birth, can be caused by oxygen-related lung injury and is characterized by impaired alveolar and vascular development. Mesenchymal stromal cells (MSCs) have lung protective effects. Conversely, BPD is associated with increased MSCs in tracheal aspirates. We hypothesized that endogenous lung (L-)MSCs are perturbed in a well-established oxygen-induced rat model mimicking BPD features. Rat pups were exposed to 21% or 95% oxygen from birth to postnatal day 10. On day 12, CD146+ L-MSCs were isolated and characterized according to the International Society for Cellular Therapy criteria. Epithelial and vascular repair potential were tested by scratch assay and endothelial network formation, respectively, immune function by mixed lymphocyte reaction assay. Microarray analysis was performed using the Affymetrix GeneChip and gene set enrichment analysis software. CD146+ L-MSCs isolated from rat pups exposed to hyperoxia had decreased CD73 expression and inhibited lung endothelial network formation. CD146+ L-MSCs indiscriminately promoted epithelial wound healing and limited T cell proliferation. Expression of potent antiangiogenic genes of the axonal guidance cue and CDC42 pathways was increased after in vivo hyperoxia, whereas genes of the anti-inflammatory Janus kinase (JAK)/signal transducer and activator of transcription (STAT) and lung/vascular growth-promoting fibroblast growth factor (FGF) pathways were decreased. In conclusion, in vivo hyperoxia exposure alters the proangiogenic effects and FGF expression of L-MSCs. In addition, decreased CD73 and JAK/STAT expression suggests decreased immune function. L-MSC function may be perturbed and contribute to BPD pathogenesis. These findings may lead to improvements in manufacturing exogenous MSCs with superior repair capabilities.
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Affiliation(s)
- Jennifer J P Collins
- 1 Sinclair Centre for Regenerative Medicine, Ottawa Hospital Research Institute , Ottawa, Canada .,2 Department of Cellular and Molecular Medicine, University of Ottawa , Ottawa, Canada
| | - Marissa A Lithopoulos
- 1 Sinclair Centre for Regenerative Medicine, Ottawa Hospital Research Institute , Ottawa, Canada .,2 Department of Cellular and Molecular Medicine, University of Ottawa , Ottawa, Canada
| | - Claudia C Dos Santos
- 3 Keenan Research Centre for Biomedical Science of St. Michael's Hospital , Toronto, Canada .,4 Interdepartmental Division of Critical Care Medicine, University of Toronto , Toronto, Canada
| | - Nahla Issa
- 1 Sinclair Centre for Regenerative Medicine, Ottawa Hospital Research Institute , Ottawa, Canada .,2 Department of Cellular and Molecular Medicine, University of Ottawa , Ottawa, Canada
| | - Marius A Möbius
- 1 Sinclair Centre for Regenerative Medicine, Ottawa Hospital Research Institute , Ottawa, Canada .,5 Department of Neonatology and Pediatric Critical Care Medicine, Medical Faculty and University Hospital Carl Gustav Carus , Technische Universität Dresden, Dresden, Germany .,6 DFG Research Center and Cluster of Excellence for Regenerative Therapies (CRTD) , Technische Universität Dresden, Dresden, Germany
| | - Caryn Ito
- 1 Sinclair Centre for Regenerative Medicine, Ottawa Hospital Research Institute , Ottawa, Canada .,2 Department of Cellular and Molecular Medicine, University of Ottawa , Ottawa, Canada
| | - Shumei Zhong
- 1 Sinclair Centre for Regenerative Medicine, Ottawa Hospital Research Institute , Ottawa, Canada
| | - Arul Vadivel
- 1 Sinclair Centre for Regenerative Medicine, Ottawa Hospital Research Institute , Ottawa, Canada
| | - Bernard Thébaud
- 1 Sinclair Centre for Regenerative Medicine, Ottawa Hospital Research Institute , Ottawa, Canada .,2 Department of Cellular and Molecular Medicine, University of Ottawa , Ottawa, Canada .,7 Children's Hospital of Eastern Ontario Research Institute , Ottawa, Canada
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BRONCHOPULMONARY DYSPLASIA IN PRETERM CHILDREN. WORLD OF MEDICINE AND BIOLOGY 2018. [DOI: 10.26724/2079-8334-2018-4-66-27-31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Surate Solaligue DE, Rodríguez-Castillo JA, Ahlbrecht K, Morty RE. Recent advances in our understanding of the mechanisms of late lung development and bronchopulmonary dysplasia. Am J Physiol Lung Cell Mol Physiol 2017; 313:L1101-L1153. [PMID: 28971976 DOI: 10.1152/ajplung.00343.2017] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/21/2017] [Accepted: 09/23/2017] [Indexed: 02/08/2023] Open
Abstract
The objective of lung development is to generate an organ of gas exchange that provides both a thin gas diffusion barrier and a large gas diffusion surface area, which concomitantly generates a steep gas diffusion concentration gradient. As such, the lung is perfectly structured to undertake the function of gas exchange: a large number of small alveoli provide extensive surface area within the limited volume of the lung, and a delicate alveolo-capillary barrier brings circulating blood into close proximity to the inspired air. Efficient movement of inspired air and circulating blood through the conducting airways and conducting vessels, respectively, generates steep oxygen and carbon dioxide concentration gradients across the alveolo-capillary barrier, providing ideal conditions for effective diffusion of both gases during breathing. The development of the gas exchange apparatus of the lung occurs during the second phase of lung development-namely, late lung development-which includes the canalicular, saccular, and alveolar stages of lung development. It is during these stages of lung development that preterm-born infants are delivered, when the lung is not yet competent for effective gas exchange. These infants may develop bronchopulmonary dysplasia (BPD), a syndrome complicated by disturbances to the development of the alveoli and the pulmonary vasculature. It is the objective of this review to update the reader about recent developments that further our understanding of the mechanisms of lung alveolarization and vascularization and the pathogenesis of BPD and other neonatal lung diseases that feature lung hypoplasia.
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Affiliation(s)
- David E Surate Solaligue
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
| | - José Alberto Rodríguez-Castillo
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
| | - Katrin Ahlbrecht
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
| | - Rory E Morty
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and .,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
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Abstract
To survive the transition to extrauterine life, newborn infants must have lungs that provide an adequate surface area and volume to allow for gas exchange. The dynamic activities of fetal breathing movements and accumulation of lung luminal fluid are key to fetal lung development throughout the various phases of lung development and growth, first by branching morphogenesis, and later by septation. Because effective gas exchange is essential to survival, pulmonary hypoplasia is among the leading findings on autopsies of children dying in the newborn period. Management of infants born prematurely who had disrupted lung development, especially at the pre-glandular or canalicular periods, may be challenging, but limited success has been reported. Growing understanding of stem cell biology and mechanical development of the lung, and how to apply them clinically, may lead to new approaches that will lead to better outcomes for these patients.
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36
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Collins JJP, Tibboel D, de Kleer IM, Reiss IKM, Rottier RJ. The Future of Bronchopulmonary Dysplasia: Emerging Pathophysiological Concepts and Potential New Avenues of Treatment. Front Med (Lausanne) 2017; 4:61. [PMID: 28589122 PMCID: PMC5439211 DOI: 10.3389/fmed.2017.00061] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 05/02/2017] [Indexed: 12/13/2022] Open
Abstract
Yearly more than 15 million babies are born premature (<37 weeks gestational age), accounting for more than 1 in 10 births worldwide. Lung injury caused by maternal chorioamnionitis or preeclampsia, postnatal ventilation, hyperoxia, or inflammation can lead to the development of bronchopulmonary dysplasia (BPD), one of the most common adverse outcomes in these preterm neonates. BPD patients have an arrest in alveolar and microvascular development and more frequently develop asthma and early-onset emphysema as they age. Understanding how the alveoli develop, and repair, and regenerate after injury is critical for the development of therapies, as unfortunately there is still no cure for BPD. In this review, we aim to provide an overview of emerging new concepts in the understanding of perinatal lung development and injury from a molecular and cellular point of view and how this is paving the way for new therapeutic options to prevent or treat BPD, as well as a reflection on current treatment procedures.
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Affiliation(s)
- Jennifer J P Collins
- Department of Pediatric Surgery, Sophia Children's Hospital, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - Dick Tibboel
- Department of Pediatric Surgery, Sophia Children's Hospital, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - Ismé M de Kleer
- Division of Pediatric Pulmonology, Department of Pediatrics, Sophia Children's Hospital, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - Irwin K M Reiss
- Division of Neonatology, Department of Pediatrics, Sophia Children's Hospital, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - Robbert J Rottier
- Department of Pediatric Surgery, Sophia Children's Hospital, Erasmus University Medical Centre, Rotterdam, Netherlands
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37
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Miller AJ, Spence JR. In Vitro Models to Study Human Lung Development, Disease and Homeostasis. Physiology (Bethesda) 2017; 32:246-260. [PMID: 28404740 DOI: 10.1152/physiol.00041.2016] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 01/23/2017] [Accepted: 01/23/2017] [Indexed: 01/08/2023] Open
Abstract
The main function of the lung is to support gas exchange, and defects in lung development or diseases affecting the structure and function of the lung can have fatal consequences. Most of what we currently understand about human lung development and disease has come from animal models. However, animal models are not always fully able to recapitulate human lung development and disease, highlighting an area where in vitro models of the human lung can compliment animal models to further understanding of critical developmental and pathological mechanisms. This review will discuss current advances in generating in vitro human lung models using primary human tissue, cell lines, and human pluripotent stem cell derived lung tissue, and will discuss crucial next steps in the field.
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Affiliation(s)
- Alyssa J Miller
- PhD Program in Cell and Molecular Biology, University of Michigan Medical School, Ann Arbor, Michigan.,Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan
| | - Jason R Spence
- PhD Program in Cell and Molecular Biology, University of Michigan Medical School, Ann Arbor, Michigan; .,PhD Program in Cell and Molecular Biology, University of Michigan Medical School, Ann Arbor, Michigan.,PhD Program in Cell and Molecular Biology, University of Michigan Medical School, Ann Arbor, Michigan.,Center for Organogenesis, University of Michigan Medical School, Ann Arbor, Michigan
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38
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Medal RM, Im AM, Yamamoto Y, Lakhdari O, Blackwell TS, Hoffman HM, Sahoo D, Prince LS. The innate immune response in fetal lung mesenchymal cells targets VEGFR2 expression and activity. Am J Physiol Lung Cell Mol Physiol 2017; 312:L861-L872. [PMID: 28336813 PMCID: PMC5495951 DOI: 10.1152/ajplung.00554.2016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 03/15/2017] [Accepted: 03/16/2017] [Indexed: 02/06/2023] Open
Abstract
In preterm infants, soluble inflammatory mediators target lung mesenchymal cells, disrupting airway and alveolar morphogenesis. However, how mesenchymal cells respond directly to microbial stimuli remains poorly characterized. Our objective was to measure the genome-wide innate immune response in fetal lung mesenchymal cells exposed to the bacterial endotoxin lipopolysaccharide (LPS). With the use of Affymetrix MoGene 1.0st arrays, we showed that LPS induced expression of unique innate immune transcripts heavily weighted toward CC and CXC family chemokines. The transcriptional response was different between cells from E11, E15, and E18 mouse lungs. In all cells tested, LPS inhibited expression of a small core group of genes including the VEGF receptor Vegfr2 Although best characterized in vascular endothelial populations, we demonstrated here that fetal mouse lung mesenchymal cells express Vegfr2 and respond to VEGF-A stimulation. In mesenchymal cells, VEGF-A increased cell migration, activated the ERK/AKT pathway, and promoted FOXO3A nuclear exclusion. With the use of an experimental coculture model of epithelial-mesenchymal interactions, we also showed that VEGFR2 inhibition prevented formation of three-dimensional structures. Both LPS and tyrosine kinase inhibition reduced three-dimensional structure formation. Our data suggest a novel mechanism for inflammation-mediated defects in lung development involving reduced VEGF signaling in lung mesenchyme.
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Affiliation(s)
- Rachel M Medal
- Department of Pediatrics, University of California, San Diego, and Rady Children's Hospital, San Diego, California; and
| | - Amanda M Im
- Departments of Pediatrics, Medicine, Developmental and Cell Biology, and Cancer Biology, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Yasutoshi Yamamoto
- Departments of Pediatrics, Medicine, Developmental and Cell Biology, and Cancer Biology, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Omar Lakhdari
- Department of Pediatrics, University of California, San Diego, and Rady Children's Hospital, San Diego, California; and
| | - Timothy S Blackwell
- Departments of Pediatrics, Medicine, Developmental and Cell Biology, and Cancer Biology, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Hal M Hoffman
- Department of Pediatrics, University of California, San Diego, and Rady Children's Hospital, San Diego, California; and
| | - Debashis Sahoo
- Department of Pediatrics, University of California, San Diego, and Rady Children's Hospital, San Diego, California; and
| | - Lawrence S Prince
- Department of Pediatrics, University of California, San Diego, and Rady Children's Hospital, San Diego, California; and
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39
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McGowan S. Understanding the developmental pathways pulmonary fibroblasts may follow during alveolar regeneration. Cell Tissue Res 2017; 367:707-719. [PMID: 28062913 DOI: 10.1007/s00441-016-2542-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 11/19/2016] [Indexed: 10/20/2022]
Abstract
Although pulmonary alveolar interstitial fibroblasts are less specialized than their epithelial and endothelial neighbors, they play essential roles during development and in response to lung injury. At birth, they must adapt to the sudden mechanical changes imposed by the onset of respiration and to a higher ambient oxygen concentration. In diseases such as bronchopulmonary dysplasia and interstitial fibrosis, their adaptive responses are overwhelmed leading to compromised gas-exchange function. Thus, although fibroblasts do not directly participate in gas-exchange, they are essential for creating and maintaining an optimal environment at the alveolar epithelial-endothelial interface. This review summarizes new information and concepts about the ontogeny differentiation, and function of alveolar fibroblasts. Alveolar development will be emphasized, because the development of strategies to evoke alveolar repair and regeneration hinges on thoroughly understanding the way that resident fibroblasts populate specific locations in which extracellular matrix must be produced and remodeled. Other recent reviews have described the disruption that diseases cause to the fibroblast niche and so my objective is to illustrate how the unique developmental origins and differentiation pathways could be harnessed favorably to augment certain fibroblast subpopulations and to optimize the conditions for alveolar regeneration.
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Affiliation(s)
- Stephen McGowan
- Department of Veterans Affairs Research Service and Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA. .,Division of Pulmonary, Critical Care, and Occupational Medicine, C33B GH, Department of Internal Medicine, University of Iowa Hospitals and Clinics, 200 Hawkins Drive, Iowa City, IA 52242, USA.
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40
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Ehrhardt H, Zimmer KP. The need for coordination of research activities in pediatric lung diseases. Mol Cell Pediatr 2016; 3:26. [PMID: 27465412 PMCID: PMC4963328 DOI: 10.1186/s40348-016-0060-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 07/21/2016] [Indexed: 11/10/2022] Open
Affiliation(s)
- Harald Ehrhardt
- Department of General Pediatrics and Neonatology, Center for Pediatrics and Youth Medicine, Justus-Liebig-University, Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Lung Research Center (DZL), Feulgenstr. 12, D-35392, Gießen, Germany.
| | - Klaus-Peter Zimmer
- Department of General Pediatrics and Neonatology, Center for Pediatrics and Youth Medicine, Justus-Liebig-University, Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Lung Research Center (DZL), Feulgenstr. 12, D-35392, Gießen, Germany
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41
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Moghadasi M, Ilghari D, Sirati-Sabet M, Amini A, Asghari H, Gheibi N. Structural characterization of recombinant human fibroblast growth factor receptor 2b kinase domain upon interaction with omega fatty acids. Chem Phys Lipids 2016; 202:21-27. [PMID: 27871884 DOI: 10.1016/j.chemphyslip.2016.11.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Revised: 11/09/2016] [Accepted: 11/17/2016] [Indexed: 12/31/2022]
Abstract
The mutated recombinant kinase domain of human fibroblast growth factor receptor 2b (hFGFR2b) is overexpressed and purified, and its structural changes upon the interaction with three unsaturated fatty acids (UFAs), oleic, linoleic and α-linolenic are studied. This interaction is investigated to find out about the folding and unfolding effect of unsaturated fatty acids on the kinase domain structure of hFGFR2b. Recombinant pLEICS-01 vectors, containing the mutated coding region of hFGFR2b, are expressed in the standard Escherichia coli BL21 (DE3) host cells and purified by Ni2+-NTA affinity chromatography. While polyacrylamide gel electrophoresis characterizes the functionality of recombinant protein, its structural changes are studied in the presence and absence of various concentrations of oleic, α-linolenic and linoleic acids using circular dichroism (CD) and fluorescence spectroscopy. Far ultraviolet CD results show that unsaturated fatty acids do not change the secondary structure of the recombinant kinase domain of hFGFR2b. However, chemical denaturation analysis confirms that all three UFAs destabilize the tertiary structure of recombinant protein. A decrease in the fluorescence intensity without any significant red or blue shift (336±1nm) reflects a variation in the tertiary structure of protein. The direct interaction of the studied UFAs with hFGFR2b reduces the conformational stability of their kinase domains. The structural changes in hFGFR2b in the presence of UFAs may be necessary for hFGFR2b to adjust the signal transduction and regulate the key cellular processes.
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Affiliation(s)
- Masoumeh Moghadasi
- Department of Biotechnology, School of Para Medicine, Qazvin University of Medical Science, Qazvin, Iran
| | - Dariush Ilghari
- College of Pharmacy, University of Texas at Austin, Austin, TX 78712, USA
| | - Majid Sirati-Sabet
- Department of Clinical Biochemistry, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abbas Amini
- Centre for Infrastructure Engineering, Western Sydney University, Bld Y, Locked Bag 1797, NSW 2751, Australia; Department of Mechanical Engineering, Australian College of Kuwait, Mishrif, Kuwait City, Kuwait.
| | - Hamideh Asghari
- Department of Biotechnology, School of Para Medicine, Qazvin University of Medical Science, Qazvin, Iran
| | - Nematollah Gheibi
- Cellular and Molecular Research Center, Qazvin University of Medical Sciences, P.O. Box 34199-15315, Qazvin, Iran.
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42
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Morty RE. The pluralization of septum. Am J Physiol Lung Cell Mol Physiol 2016; 311:L686. [DOI: 10.1152/ajplung.00359.2016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 08/15/2016] [Indexed: 01/07/2023] Open
Affiliation(s)
- Rory E. Morty
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), member of the German Center for Lung Research (DZL), Giessen, Germany
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