1
|
Chaudhry FN, Michki NS, Shirmer DL, McGrath-Morrow S, Young LR, Frank DB, Zepp JA. Dynamic Hippo pathway activity underlies mesenchymal differentiation during lung alveolar morphogenesis. Development 2024; 151:dev202430. [PMID: 38602485 PMCID: PMC11112347 DOI: 10.1242/dev.202430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 03/26/2024] [Indexed: 04/12/2024]
Abstract
Alveologenesis, the final stage in lung development, substantially remodels the distal lung, expanding the alveolar surface area for efficient gas exchange. Secondary crest myofibroblasts (SCMF) exist transiently in the neonatal distal lung and are crucial for alveologenesis. However, the pathways that regulate SCMF function, proliferation and temporal identity remain poorly understood. To address this, we purified SCMFs from reporter mice, performed bulk RNA-seq and found dynamic changes in Hippo-signaling components during alveologenesis. We deleted the Hippo effectors Yap/Taz from Acta2-expressing cells at the onset of alveologenesis, causing a significant arrest in alveolar development. Using single cell RNA-seq, we identified a distinct cluster of cells in mutant lungs with altered expression of marker genes associated with proximal mesenchymal cell types, airway smooth muscle and alveolar duct myofibroblasts. In vitro studies confirmed that Yap/Taz regulates myofibroblast-associated gene signature and contractility. Together, our findings show that Yap/Taz is essential for maintaining functional myofibroblast identity during postnatal alveologenesis.
Collapse
Affiliation(s)
- Fatima N. Chaudhry
- Division of Pulmonary and Sleep Medicine, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Nigel S. Michki
- Division of Pulmonary and Sleep Medicine, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
- Division of Cardiology, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Dain L. Shirmer
- Division of Pulmonary and Sleep Medicine, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Sharon McGrath-Morrow
- Division of Pulmonary and Sleep Medicine, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Lisa R. Young
- Division of Pulmonary and Sleep Medicine, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - David B. Frank
- Division of Cardiology, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Jarod A. Zepp
- Division of Pulmonary and Sleep Medicine, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| |
Collapse
|
2
|
Zhao J, Ballard C, Cohen AJ, Ringham B, Zhao B, Wang H, Zuspan K, Rebentisch A, Locklear BA, Dahl M, Maschek JA, Cox JE, Joss-Moore LA. Postnatal growth restriction impairs rat lung structure and function. Anat Rec (Hoboken) 2023:10.1002/ar.25297. [PMID: 37515384 PMCID: PMC10822022 DOI: 10.1002/ar.25297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 07/08/2023] [Accepted: 07/13/2023] [Indexed: 07/30/2023]
Abstract
The negative impact of nutritional deficits in the development of bronchopulmonary dysplasia is well recognized, yet mechanisms by which nutrition alters lung outcomes and nutritional strategies that optimize development and protect the lung remain elusive. Here, we use a rat model to assess the isolated effects of postnatal nutrition on lung structural development without concomitant lung injury. We hypothesize that postnatal growth restriction (PGR) impairs lung structure and function, critical mediators of lung development, and fatty acid profiles at postnatal day 21 in the rat. Rat pups were cross-fostered at birth to rat dams with litter sizes of 8 (control) or 16 (PGR). Lung structure and function, as well as serum and lung tissue fatty acids, and lung molecular mediators of development, were measured. Male and female PGR rat pups had thicker airspace walls, decreased lung compliance, and increased tissue damping. Male rats also had increased lung elastance, increased lung elastin protein abundance, and lysol oxidase expression, and increased elastic fiber deposition. Female rat lungs had increased conducting airway resistance and reduced levels of docosahexaenoic acid in lung tissue. We conclude that PGR impairs lung structure and function in both male and female rats, with sex-divergent changes in lung molecular mediators of development.
Collapse
Affiliation(s)
- James Zhao
- Department of Pediatrics, University of Utah, Salt Lake City, Utah, USA
| | - Craig Ballard
- Department of Pediatrics, University of Utah, Salt Lake City, Utah, USA
| | - Adrienne J Cohen
- Department of Pediatrics, University of Utah, Salt Lake City, Utah, USA
| | - Ben Ringham
- Department of Pediatrics, University of Utah, Salt Lake City, Utah, USA
| | - Brooke Zhao
- Department of Pediatrics, University of Utah, Salt Lake City, Utah, USA
| | - Haimei Wang
- Department of Pediatrics, University of Utah, Salt Lake City, Utah, USA
| | - Katie Zuspan
- Department of Pediatrics, University of Utah, Salt Lake City, Utah, USA
| | - Andrew Rebentisch
- Department of Pediatrics, University of Utah, Salt Lake City, Utah, USA
| | - Brent A Locklear
- Department of Pediatrics, University of Utah, Salt Lake City, Utah, USA
| | - MarJanna Dahl
- Department of Pediatrics, University of Utah, Salt Lake City, Utah, USA
| | - J Alan Maschek
- Health Science Center Cores, University of Utah Health Sciences Center, Salt Lake City, Utah, USA
- Department of Biochemistry, University of Utah, Salt Lake City, Utah, USA
| | - James E Cox
- Health Science Center Cores, University of Utah Health Sciences Center, Salt Lake City, Utah, USA
- Department of Biochemistry, University of Utah, Salt Lake City, Utah, USA
| | - Lisa A Joss-Moore
- Department of Pediatrics, University of Utah, Salt Lake City, Utah, USA
| |
Collapse
|
3
|
Lu Z, Coll P, Maitre B, Epaud R, Lanone S. Air pollution as an early determinant of COPD. Eur Respir Rev 2022; 31:31/165/220059. [PMID: 35948393 DOI: 10.1183/16000617.0059-2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 06/09/2022] [Indexed: 11/05/2022] Open
Abstract
COPD is a progressive and debilitating disease often diagnosed after 50 years of age, but more recent evidence suggests that its onset could originate very early on in life. In this context, exposure to air pollution appears to be a potential contributor. Although the potential role of air pollution as an early determinant of COPD is emerging, knowledge gaps still remain, including an accurate qualification of air pollutants (number of pollutants quantified and exact composition) or the "one exposure-one disease" concept, which might limit the current understanding. To fill these gaps, improvements in the field are needed, such as the use of atmosphere simulation chambers able to realistically reproduce the complexity of air pollution, consideration of the exposome, as well as improving exchanges between paediatricians and adult lung specialists to take advantage of reciprocal expertise. This review should lead to a better understanding of the current knowledge on air pollution as an early determinant of COPD, as well as identify the existing knowledge gaps and opportunities to fill them. Hopefully, this will lead to better prevention strategies to scale down the development of COPD in future generations.
Collapse
Affiliation(s)
- Zhuyi Lu
- Univ Paris Est Creteil, INSERM, IMRB, Creteil, France
| | - Patrice Coll
- Université Paris Cité and Univ Paris Est Créteil, CNRS, LISA, Paris, France
| | - Bernard Maitre
- Univ Paris Est Creteil, INSERM, IMRB, Creteil, France.,Dept of Pneumology, Centre Hospitalier Intercommunal de Créteil, Créteil, France
| | - Ralph Epaud
- Univ Paris Est Creteil, INSERM, IMRB, Creteil, France.,Dept of General Pediatrics, Centre Hospitalier Intercommunal de Créteil, Créteil, France
| | - Sophie Lanone
- Univ Paris Est Creteil, INSERM, IMRB, Creteil, France
| |
Collapse
|
4
|
Zhang T, Day NJ, Gaffrey M, Weitz KK, Attah K, Mimche PN, Paine R, Qian WJ, Helms MN. Regulation of hyperoxia-induced neonatal lung injury via post-translational cysteine redox modifications. Redox Biol 2022; 55:102405. [PMID: 35872399 PMCID: PMC9307955 DOI: 10.1016/j.redox.2022.102405] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Accepted: 07/11/2022] [Indexed: 12/17/2022] Open
Abstract
Preterm infants and patients with lung disease often have excess fluid in the lungs and are frequently treated with oxygen, however long-term exposure to hyperoxia results in irreversible lung injury. Although the adverse effects of hyperoxia are mediated by reactive oxygen species, the full extent of the impact of hyperoxia on redox-dependent regulation in the lung is unclear. In this study, neonatal mice overexpressing the beta-subunit of the epithelial sodium channel (β-ENaC) encoded by Scnn1b and their wild type (WT; C57Bl6) littermates were utilized to study the pathogenesis of high fraction inspired oxygen (FiO2)-induced lung injury. Results showed that O2-induced lung injury in transgenic Scnn1b mice is attenuated following chronic O2 exposure. To test the hypothesis that reversible cysteine-redox-modifications of proteins play an important role in O2-induced lung injury, we performed proteome-wide profiling of protein S-glutathionylation (SSG) in both WT and Scnn1b overexpressing mice maintained at 21% O2 (normoxia) or FiO2 85% (hyperoxia) from birth to 11-15 days postnatal. Over 7700 unique Cys sites with SSG modifications were identified and quantified, covering more than 3000 proteins in the lung. In both mouse models, hyperoxia resulted in a significant alteration of the SSG levels of Cys sites belonging to a diverse range of proteins. In addition, substantial SSG changes were observed in the Scnn1b overexpressing mice exposed to hyperoxia, suggesting that ENaC plays a critically important role in cellular regulation. Hyperoxia-induced SSG changes were further supported by the results observed for thiol total oxidation, the overall level of reversible oxidation on protein cysteine residues. Differential analyses reveal that Scnn1b overexpression may protect against hyperoxia-induced lung injury via modulation of specific processes such as cell adhesion, blood coagulation, and proteolysis. This study provides a landscape view of protein oxidation in the lung and highlights the importance of redox regulation in O2-induced lung injury.
Collapse
Affiliation(s)
- Tong Zhang
- Integrative Omics Group, Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Nicholas J Day
- Integrative Omics Group, Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Matthew Gaffrey
- Integrative Omics Group, Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Karl K Weitz
- Integrative Omics Group, Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Kwame Attah
- Integrative Omics Group, Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Patrice N Mimche
- Division of Microbiology and Immunology, Department of Pathology, University of Utah Molecular Medicine Program, Salt Lake City, UT, USA
| | - Robert Paine
- Pulmonary Division, Department of Internal Medicine, University of Utah, Salt Lake City, UT, USA
| | - Wei-Jun Qian
- Integrative Omics Group, Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA.
| | - My N Helms
- Pulmonary Division, Department of Internal Medicine, University of Utah, Salt Lake City, UT, USA.
| |
Collapse
|
5
|
Ito R, Barnes EA, Che X, Alvira CM, Cornfield DN. SM22α cell-specific HIF stabilization mitigates hyperoxia-induced neonatal lung injury. Am J Physiol Lung Cell Mol Physiol 2022; 323:L129-L141. [PMID: 35762602 PMCID: PMC9342196 DOI: 10.1152/ajplung.00110.2022] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Though survival rates for preterm infants are improving, the incidence of chronic lung disease of infancy, or bronchopulmonary dysplasia (BPD), remains high. Histologically, BPD is characterized by larger and fewer alveoli. Hypoxia-inducible factors (HIFs) may be protective in the context of hyperoxia-induced lung injury, but the cell-specific effects of HIF expression in neonatal lung injury remain unknown. Thus, we sought to determine whether HIF stabilization in SM22α-expressing cells can limit hyperoxia-induced neonatal lung injury. We generated SM22α-specific HIF-1α-stabilized mice (SM22α-PHD1/2-/- mice) by cross-breeding SM22α-promotor-driven Cre recombinase mice with prolyl hydroxylase PHD1flox/flox and PHD2flox/flox mice. Neonatal mice were randomized to 21% O2 (normoxia) or 80% O2 (hyperoxia) exposure for 14 days. For the hyperoxia recovery studies, neonatal mice were recovered from normoxia for an additional 10 wk. SM22α-specific HIF-1α stabilization mitigated hyperoxia-induced lung injury and preserved microvessel density compared with control mice for both neonates and adults. In SM22α-PHD1/2-/- mice, pulmonary artery endothelial cells (PAECs) were more proliferative and pulmonary arteries expressed more collagen IV compared with control mice, even under hyperoxic conditions. Angiopoietin-2 (Ang2) mRNA expression in pulmonary artery smooth muscle cells (PASMC) was greater in SM22α-PHD1/2-/- compared with control mice in both normoxia and hyperoxia. Pulmonary endothelial cells (PECs) cocultured with PASMC isolated from SM22α-PHD1/2-/- mice formed more tubes and branches with greater tube length compared with PEC cocultured with PASMC isolated from SM22α-PHD1/2+/+ mice. Addition of Ang2 recombinant protein further augmented tube formation for both PHD1/2+/+ and PHD1/2-/- PASMC. Cell-specific deletion of PHD1 and 2 selectively increases HIF-1α expression in SM22α-expressing cells and protects neonatal lung development despite prolonged hyperoxia exposure. HIF stabilization in SM22α-expressing cells preserved endothelial cell proliferation, microvascular density, increased angiopoietin-2 expression, and lung structure, suggesting a role for cell-specific HIF-1α stabilization to prevent neonatal lung injury.
Collapse
Affiliation(s)
- Reiji Ito
- Department of Pediatrics, Center for Excellence in Pulmonary Biology, Stanford University School of Medicine, Stanford, California
| | - Elizabeth A. Barnes
- Department of Pediatrics, Center for Excellence in Pulmonary Biology, Stanford University School of Medicine, Stanford, California
| | - Xibing Che
- Department of Pediatrics, Center for Excellence in Pulmonary Biology, Stanford University School of Medicine, Stanford, California
| | - Cristina M. Alvira
- Department of Pediatrics, Center for Excellence in Pulmonary Biology, Stanford University School of Medicine, Stanford, California
| | - David N. Cornfield
- Department of Pediatrics, Center for Excellence in Pulmonary Biology, Stanford University School of Medicine, Stanford, California
| |
Collapse
|
6
|
Gao F, Li C, Danopoulos S, Al Alam D, Peinado N, Webster S, Borok Z, Kohbodi GA, Bellusci S, Minoo P. Hedgehog-responsive PDGFRa(+) fibroblasts maintain a unique pool of alveolar epithelial progenitor cells during alveologenesis. Cell Rep 2022; 39:110608. [PMID: 35385750 PMCID: PMC9199394 DOI: 10.1016/j.celrep.2022.110608] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 12/06/2021] [Accepted: 03/11/2022] [Indexed: 01/08/2023] Open
Abstract
The lung alveolus is lined with alveolar type 1 (AT1) and type 2 (AT2) epithelial cells. During alveologenesis, increasing demand associated with expanding alveolar numbers is met by proliferating progenitor AT2s (pAT2). Little information exists regarding the identity of this population and their niche microenvironment. We show that during alveologenesis, Hedgehog-responsive PDGFRa(+) progenitors (also known as SCMFs) are a source of secreted trophic molecules that maintain a unique pAT2 population. SCMFs are in turn maintained by TGFβ signaling. Compound inactivation of Alk5 TβR2 in SCMFs reduced their numbers and depleted the pAT2 pool without impacting differentiation of daughter cells. In lungs of preterm infants who died with bronchopulmonary dysplasia, PDGFRa is reduced and the number of proliferative AT2s is diminished, indicating that an evolutionarily conserved mechanism governs pAT2 behavior during alveologenesis. SCMFs are a transient cell population, active only during alveologenesis, making them a unique stage-specific niche mesodermal cell type in mammalian organs.
Collapse
Affiliation(s)
- Feng Gao
- Division of Neonatology, Department of Pediatrics, LAC+USC Medical Center and Childrens Hospital Los Angeles, Los Angeles, CA 90033, USA
| | - Changgong Li
- Division of Neonatology, Department of Pediatrics, LAC+USC Medical Center and Childrens Hospital Los Angeles, Los Angeles, CA 90033, USA
| | - Soula Danopoulos
- Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, Torrance, CA 90502, USA
| | - Denise Al Alam
- Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, Torrance, CA 90502, USA
| | - Neil Peinado
- Division of Neonatology, Department of Pediatrics, LAC+USC Medical Center and Childrens Hospital Los Angeles, Los Angeles, CA 90033, USA
| | - Sha Webster
- Division of Neonatology, Department of Pediatrics, LAC+USC Medical Center and Childrens Hospital Los Angeles, Los Angeles, CA 90033, USA
| | - Zea Borok
- Hastings Center for Pulmonary Research, Keck School of Medicine of University of Southern California, Los Angeles, CA 90033, USA; Division of Pulmonary, Critical Care and Sleep Medicine, University of California San Diego School of Medicine, San Diego, CA 92093, USA
| | - GoleNaz Adeli Kohbodi
- Division of Neonatology, Department of Pediatrics, LAC+USC Medical Center and Childrens Hospital Los Angeles, Los Angeles, CA 90033, USA
| | - Saverio Bellusci
- Division of Neonatology, Department of Pediatrics, LAC+USC Medical Center and Childrens Hospital Los Angeles, Los Angeles, CA 90033, USA; Universities of Giessen and Marburg Lung Center (UGMLC), Justus-Liebig-University Giessen, German Center for Lung Research (DZL), 35390 Giessen, Germany
| | - Parviz Minoo
- Division of Neonatology, Department of Pediatrics, LAC+USC Medical Center and Childrens Hospital Los Angeles, Los Angeles, CA 90033, USA; Hastings Center for Pulmonary Research, Keck School of Medicine of University of Southern California, Los Angeles, CA 90033, USA.
| |
Collapse
|
7
|
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.
Collapse
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 ()
| |
Collapse
|
8
|
Negretti NM, Plosa EJ, Benjamin JT, Schuler BA, Habermann AC, Jetter CS, Gulleman P, Bunn C, Hackett AN, Ransom M, Taylor CJ, Nichols D, Matlock BK, Guttentag SH, Blackwell TS, Banovich NE, Kropski JA, Sucre JMS. A single-cell atlas of mouse lung development. Development 2021; 148:dev199512. [PMID: 34927678 PMCID: PMC8722390 DOI: 10.1242/dev.199512] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 11/19/2021] [Indexed: 12/31/2022]
Abstract
Lung organogenesis requires precise timing and coordination to effect spatial organization and function of the parenchymal cells. To provide a systematic broad-based view of the mechanisms governing the dynamic alterations in parenchymal cells over crucial periods of development, we performed a single-cell RNA-sequencing time-series yielding 102,571 epithelial, endothelial and mesenchymal cells across nine time points from embryonic day 12 to postnatal day 14 in mice. Combining computational fate-likelihood prediction with RNA in situ hybridization and immunofluorescence, we explore lineage relationships during the saccular to alveolar stage transition. The utility of this publicly searchable atlas resource (www.sucrelab.org/lungcells) is exemplified by discoveries of the complexity of type 1 pneumocyte function and characterization of mesenchymal Wnt expression patterns during the saccular and alveolar stages - wherein major expansion of the gas-exchange surface occurs. We provide an integrated view of cellular dynamics in epithelial, endothelial and mesenchymal cell populations during lung organogenesis.
Collapse
Affiliation(s)
- Nicholas M. Negretti
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Erin J. Plosa
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - John T. Benjamin
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Bryce A. Schuler
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | | | - Christopher S. Jetter
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Peter Gulleman
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Claire Bunn
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Alice N. Hackett
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Meaghan Ransom
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Chase J. Taylor
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - David Nichols
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Brittany K. Matlock
- Vanderbilt Ingram Cancer Center and Vanderbilt Digestive Disease Research Center, Flow Cytometry Shared Resource, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Susan H. Guttentag
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Timothy S. Blackwell
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA
- Department of Cell and Developmental Biology, Vanderbilt University, Nashville, TN 37232, USA
- Department of Veterans Affairs Medical Center, Nashville, TN 37232, USA
| | - Nicholas E. Banovich
- Integrated Cancer Genomics Division, Translational Genomics Research Institute, Phoenix, AZ 85004, USA
| | - Jonathan A. Kropski
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA
- Department of Cell and Developmental Biology, Vanderbilt University, Nashville, TN 37232, USA
- Department of Veterans Affairs Medical Center, Nashville, TN 37232, USA
| | - Jennifer M. S. Sucre
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN 37232, USA
- Department of Cell and Developmental Biology, Vanderbilt University, Nashville, TN 37232, USA
| |
Collapse
|
9
|
Jiang J, Wang J, Li C, Mo L, Huang D. Hyperoxia induces alveolar epithelial cell apoptosis by regulating mitochondrial function through small mothers against decapentaplegic 3 (SMAD3) and extracellular signal-regulated kinase 1/2 (ERK1/2). Bioengineered 2021; 13:242-252. [PMID: 34898379 PMCID: PMC8805928 DOI: 10.1080/21655979.2021.2012953] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Oxygen therapy and mechanical ventilation are widely used to treat and manage neonatal emergencies in critically ill newborns. However, they are often associated with adverse effects and result in conditions such as chronic lung disease and bronchopulmonary dysplasia. Hence, aclear understanding of the mechanisms underlying hyperoxia-induced lung damage is crucial in order to mitigate the side effects of oxygen-based therapy. Here, we have established an in vitro model of hyperoxia-induced lung damage in type II alveolar epithelial cells (AECIIs) and delineated the molecular basis of oxygen therapy-induced impaired alveolar development. Thus, AECIIs were exposed to a hyperoxic environment and their cell viability, cell cycle progression, apoptosis, mitochondrial integrity and dynamics, and energy metabolism were assessed. The results showed that hyperoxia has no significant effect as an inhibitor of SMAD3 and ERK1/2 in AECIIs, but leads to significant inhibition of cell viability. Further, hyperoxia was found to promote AECII apoptosis and mitochondrial, whereas chemical inhibition of SMAD3 or ERK1/2 further exacerbated the detrimental effects of hyperoxia in AECIIs. Overall, these findings presented herein demonstrate the critical role of SMAD/ERK signaling in the regulation of AECII behavior in varying oxygen environments. Thus, this study offers novel insights for the prevention of neonatal lung dysfunction in premature infants.
Collapse
Affiliation(s)
- Jun Jiang
- Department of Pediatric Intensive Care Unit, Guizhou Provincial People's Hospital, Guiyang, China
| | - Juan Wang
- Department of Pediatrics, Affiliated Hospital of Hebei University, Baoding, China
| | - Cen Li
- Department of Pediatric Intensive Care Unit, Guizhou Provincial People's Hospital, Guiyang, China
| | - Lianqin Mo
- Department of Pediatric Intensive Care Unit, Guizhou Provincial People's Hospital, Guiyang, China
| | - Dong Huang
- Department of Pediatric Intensive Care Unit, Guizhou Provincial People's Hospital, Guiyang, China
| |
Collapse
|
10
|
Salimi U, Dummula K, Tucker MH, Dela Cruz CS, Sampath V. Postnatal Sepsis and Bronchopulmonary Dysplasia in Premature Infants: Mechanistic Insights into "New BPD". Am J Respir Cell Mol Biol 2021; 66:137-145. [PMID: 34644520 DOI: 10.1165/rcmb.2021-0353ps] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a debilitating disease in premature infants resulting from lung injury that disrupts alveolar and pulmonary vascular development. Despite the use of lung-protective ventilation and targeted oxygen therapy, BPD rates have not significantly changed over the last decade. Recent evidence suggests that sepsis and conditions initiating the systemic inflammatory response syndrome in preterm infants are key risk factors for BPD. However, the mechanisms by which sepsis-associated systemic inflammation and microbial dissemination program aberrant lung development are not fully understood. Progress has been made within the last 5 years with the inception of animal models allowing mechanistic investigations into neonatal acute lung injury and alveolar remodeling due to endotoxemia and NEC. These recent studies begin to unravel the pathophysiology of early endothelial immune activation via pattern recognition receptors such as Toll Like Receptor 4 and disruption of critical lung developmental processes such as angiogenesis, extracellular matrix deposition, and ultimately alveologenesis. Here we review scientific evidence from preclinical models of neonatal sepsis-induced lung injury to new data emerging from clinical literature.
Collapse
Affiliation(s)
- Umar Salimi
- Yale University, 5755, Pediatrics, New Haven, Connecticut, United States
| | - Krishna Dummula
- Children's Mercy, 4204, Pediatrics, Kansas City, Missouri, United States
| | - Megan H Tucker
- Children's Mercy, 4204, Pediatrics, Kansas City, Missouri, United States
| | - Charles S Dela Cruz
- Yale University, Pulmonary and Critical Care Medicine, New Haven, Connecticut, United States
| | - Venkatesh Sampath
- Children\'s Mercy Hospitals and Clinics, 4204, Pediatrics, Kansas City, Missouri, United States;
| |
Collapse
|
11
|
Dong Y, Zhang X. Integrative analysis of lncRNAs, miRNAs, and mRNAs-associated ceRNA network in a neonatal mouse model of bronchopulmonary dysplasia. J Matern Fetal Neonatal Med 2021; 34:3234-3245. [PMID: 32924699 DOI: 10.1080/14767058.2020.1815700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 05/21/2020] [Accepted: 08/24/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To elucidate the potential roles of the lncRNA-mediated competitive endogenous RNA (ceRNA) network in the pathogenesis of bronchopulmonary dysplasia (BPD), we performed an integrated bioinformatics analysis based on miRNA and mRNA microarray datasets between BPD and normal samples. STUDY DESIGN The mRNA and miRNA expression profiles of BPD were downloaded from the Gene Expression Omnibus (GEO) database to perform an integrated analysis. The limma package was used to identify differentially expressed genes (DEGs) and differentially expressed miRNA (DEmiRs), followed by functional enrichment analysis of DEGs. DEmiR-DEG and DEmiRNA-lncRNA interactions were predicted. Subsequently, the lncRNA-related ceRNA network was structured. Finally, a newborn BPD mouse model was established, and quantitative real-time PCR (qPCR) was used to validate the expression of the selected mRNAs, miRNAs, and lncRNAs. RESULTS A total of 445 DEGs and 155 DEmiRs were obtained by comparing BPD samples and normal samples. Functional enrichment analysis showed that DEGs were primarily enriched in GO terms such as cell division and inflammatory response; and DEGs were mainly involved in the p53 signaling pathway. The miR17hg-miR-130b-3p-roundabout guidance receptor 2 (Robo2) and GM20455-miR-34a-5p-BMP/retinoic acid-inducible neural specific 1 (Brinp1) ceRNA axes were obtained by constructing the ceRNA network. In addition, the upregulation of Robo2 and miR17hg while the downregulation of miR-130b-3p; as well as the upregulation of Brinp1 and GM20455 but the downregulation of miR-34a-5p were validated by qPCR. CONCLUSION The miR17hg-miR-130b-3p-Robo2 and GM20455-miR-34a-5p-Brinp1 axes may serve important role in the development of BPD. These findings might provide novel insight for a comprehensive understanding of molecular mechanisms in BPD, and genes in the ceRNA network might be considered as potential biomarkers and therapeutic targets against BPD.
Collapse
Affiliation(s)
- Yan Dong
- Department of Pediatrics, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Xiaoying Zhang
- Department of Pediatrics, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| |
Collapse
|
12
|
Sudhadevi T, Jafri A, Ha AW, Basa P, Thomas JM, Fu P, Wary K, Mehta D, Natarajan V, Harijith A. Hyperoxia-induced S1P 1 signaling reduced angiogenesis by suppression of TIE-2 leading to experimental bronchopulmonary dysplasia. Cell Biochem Biophys 2021; 79:561-573. [PMID: 34176100 PMCID: PMC8551021 DOI: 10.1007/s12013-021-01014-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/09/2021] [Indexed: 01/16/2023]
Abstract
INTRODUCTION We have earlier shown that hyperoxia (HO)-induced sphingosine kinase 1 (SPHK1)/sphingosine-1-phosphate (S1P) signaling contribute to bronchopulmonary dysplasia (BPD). S1P acts through G protein-coupled receptors, S1P1 through S1P5. Further, we noted that heterozygous deletion of S1pr1 ameliorated the HO-induced BPD in the murine model. The mechanism by which S1P1 signaling contributes to HO-induced BPD was explored. METHODS S1pr1+/+ and S1pr1+/- mice pups were exposed to either room air (RA) or HO (75% oxygen) for 7 days from PN 1-7. Lung injury and alveolar simplification was evaluated. Lung protein expression was determined by Western blotting and immunohistochemistry (IHC). In vitro experiments were performed using human lung microvascular endothelial cells (HLMVECs) with S1P1 inhibitor, NIBR0213 to interrogate the S1P1 signaling pathway. RESULTS HO increased the expression of S1pr1 gene as well as S1P1 protein in both neonatal lungs and HLMVECs. The S1pr1+/- neonatal mice showed significant protection against HO-induced BPD which was accompanied by reduced inflammation markers in the bronchoalveolar lavage fluid. HO-induced reduction in ANG-1, TIE-2, and VEGF was rescued in S1pr1+/- mouse, accompanied by an improvement in the number of arterioles in the lung. HLMVECs exposed to HO increased the expression of KLF-2 accompanied by reduced expression of TIE-2, which was reversed with S1P1 inhibition. CONCLUSION HO induces S1P1 followed by reduced expression of angiogenic factors. Reduction of S1P1 signaling restores ANG-1/ TIE-2 signaling leading to improved angiogenesis and alveolarization thus protecting against HO-induced neonatal lung injury.
Collapse
Affiliation(s)
- Tara Sudhadevi
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH, USA
| | - Anjum Jafri
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH, USA
| | - Alison W Ha
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH, USA
| | - Prathima Basa
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH, USA
| | - Jaya M Thomas
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH, USA
| | - Panfeng Fu
- Department of Pharmacology and Regenerative Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Kishore Wary
- Department of Pharmacology and Regenerative Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Dolly Mehta
- Department of Pharmacology and Regenerative Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Viswanathan Natarajan
- Department of Pharmacology and Regenerative Medicine, University of Illinois at Chicago, Chicago, IL, USA
- Department of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Anantha Harijith
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH, USA.
| |
Collapse
|
13
|
Wang Y, Jiang L. Role of vitamin D-vitamin D receptor signaling on hyperoxia-induced bronchopulmonary dysplasia in neonatal rats. Pediatr Pulmonol 2021; 56:2335-2344. [PMID: 33878208 DOI: 10.1002/ppul.25418] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 03/25/2021] [Accepted: 04/03/2021] [Indexed: 11/06/2022]
Abstract
BACKGROUND Vitamin D exerts therapeutic effects on bronchopulmonary dysplasia (BPD), but its underlying mechanisms remain unclear. The present study was designed to investigate the effects of vitamin D on hyperoxia-induced BPD and elucidate the underlying mechanisms. METHODS Neonatal rats were exposed to either room air (control) or 75% O2 (hyperoxia) and intraperitoneally injected with vitamin D3. After 14 days, a histopathological examination was performed in the lungs of rats. Serum 25-hydroxyvitamin D (25OHD) was measured by liquid chromatography-tandom mass spectrometry (LC-MS)/MS. Interleukin 1 beta (IL-1β) and interferon gamma (IFN-γ) were measured by specific enzyme-linked immunosorbent assays. The messenger RNA and protein levels of vitamin D receptor (VDR), vascular endothelial growth factor (VEGF), VEGF receptor 2 (VEGFR2), and hypoxia-inducible factor 1α (HIF-1α) were determined by real-time quantitative reverse transcription polymerase chain reaction and immunoblot analysis, respectively. RESULTS Treatment with vitamin D3 increased serum 25OHD and upregulated VDR in lung tissues with or without hyperoxia. In addition, treatment with vitamin D3 attenuated alveolar simplification, increased VEGF and VEGFR2, and protected alveolar simplification induced by hyperoxia. Furthermore, treatment with vitamin D3 resulted in a decrease of IL-1β and IFN-γ and an increase of HIF-1α in lung tissues under hyperoxia conditions. CONCLUSION Vitamin D exerts protective effects on hyperoxia-induced BPD in neonatal rats by regulating vitamin D-VDR signaling pathways.
Collapse
Affiliation(s)
- Yuchun Wang
- Department of Pediatrics, Hebei Medical University, Shijiazhuang, Hebei, China.,Department of Neonatology, Cangzhou Central Hospital, Cangzhou, Hebei, China
| | - Lian Jiang
- Department of Pediatrics, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| |
Collapse
|
14
|
Guillier C, Carrière D, Pansiot J, Maroni A, Billion E, Ringot M, Benoist JF, Jacques S, Matrot B, Jarreau PH, Vaiman D, Baud O, Zana-Taïeb E. Nebulized curcumin protects neonatal lungs from antenatal insult in rats. Am J Physiol Lung Cell Mol Physiol 2021; 321:L545-L552. [PMID: 34159801 DOI: 10.1152/ajplung.00195.2021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Intrauterine growth restriction (IUGR) increases the risk of bronchopulmonary dysplasia (BPD), one of the major complications of prematurity. Antenatal low-protein diet (LPD) exposure in rats induces IUGR and mimics BPD-related alveolarization disorders. Peroxisome proliferator-activated receptor-γ (PPARγ) plays a key role in normal lung development and was found deregulated following LPD exposure. The objective of this article was to investigate the effects of nebulized curcumin, a natural PPARγ agonist, to prevent IUGR-related abnormal lung development. We studied rat pups antenatally exposed to an LPD or control diet (CTL) and treated with nebulized curcumin (50 mg/kg) or vehicle from postnatal (P) days 1 to 5. The primary readouts were lung morphometric analyses at P21. Immunohistochemistry (P21) and microarrays (P6 and P11) were compared within animals exposed to LPD versus controls, with and without curcumin treatment. Quantitative morphometric analyses revealed that LPD induced abnormal alveolarization as evidenced by a significant increase in mean linear intercept (MLI) observed in P21 LPD-exposed animals. Early curcumin treatment prevented this effect, and two-way ANOVA analysis demonstrated significant interaction between diet and curcumin both for MLI [F(1,39) = 12.67, P = 0.001] and radial alveolar count at P21 [F(1,40) = 6.065, P = 0.0182]. Immunohistochemistry for fatty acid binding protein 4 (FABP4), a major regulator of PPARγ pathway, showed a decreased FABP4+ alveolar cell density in LPD-exposed animals treated by curcumin. Transcriptomic analysis showed that early curcumin significantly prevented the activation of profibrotic pathways observed at P11 in LPD-exposed animals. Nebulized curcumin appears to be a promising strategy to prevent alveolarization disorders in IUGR rat pups, targeting pathways involved in lung development.
Collapse
Affiliation(s)
- Cyril Guillier
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Assistance Publique-Hôpitaux de Paris, Service de Médecine et Réanimation néonatales de Port-Royal, Paris, France.,Université Paris Descartes, Paris, France
| | - Diane Carrière
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Assistance Publique-Hôpitaux de Paris, Service de Médecine et Réanimation néonatales de Port-Royal, Paris, France.,Université Paris Descartes, Paris, France
| | - Julien Pansiot
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Université Paris Diderot, Paris, France
| | - Arielle Maroni
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Université Paris Descartes, Paris, France
| | - Elodie Billion
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Assistance Publique-Hôpitaux de Paris, Service de Médecine et Réanimation néonatales de Port-Royal, Paris, France.,Université Paris Descartes, Paris, France
| | - Maud Ringot
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Université Paris Diderot, Paris, France
| | - Jean-François Benoist
- Assistance Publique-Hôpitaux de Paris, Service de Biochimie-Hormonologie, Hôpital Robert Debré, Paris, France
| | - Sébastien Jacques
- Genom'ic. INSERM U1016, Centre National de la Recherche Scientifique (CNRS) Unite Mixte de Recherche (UMR) 8104, Paris, France
| | - Boris Matrot
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Université Paris Diderot, Paris, France
| | - Pierre-Henri Jarreau
- Assistance Publique-Hôpitaux de Paris, Service de Médecine et Réanimation néonatales de Port-Royal, Paris, France.,Université Paris Descartes, Paris, France.,Fondation PremUp, Paris, France.,Université de Paris, Epidemiology and Statistics Research Center (CRESS), INSERM, Institut national de la recherche agronomique (INRA), Paris, France
| | - Daniel Vaiman
- Institut Cochin, Inserm U1016-CNRS UMRS 104, Paris, France
| | - Olivier Baud
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Université Paris Diderot, Paris, France.,Assistance Publique-Hôpitaux de Paris, Service de Réanimation et Pédiatrie néonatales, Hôpital Robert Debré, Paris, France.,Division of Neonatology and Pediatric Intensive Care, Children's University Hospital of Geneva and University of Geneva, Geneva, Switzerland
| | - Elodie Zana-Taïeb
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Assistance Publique-Hôpitaux de Paris, Service de Médecine et Réanimation néonatales de Port-Royal, Paris, France.,Fondation PremUp, Paris, France
| |
Collapse
|
15
|
Mereness JA, Mariani TJ. The critical role of collagen VI in lung development and chronic lung disease. Matrix Biol Plus 2021; 10:100058. [PMID: 34195595 PMCID: PMC8233475 DOI: 10.1016/j.mbplus.2021.100058] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 01/07/2021] [Accepted: 01/08/2021] [Indexed: 01/20/2023] Open
Abstract
Type VI collagen (collagen VI) is an obligate extracellular matrix component found mainly in the basement membrane region of many mammalian tissues and organs, including skeletal muscle and throughout the respiratory system. Collagen VI is probably most recognized in medicine as the genetic cause of a spectrum of muscular dystrophies, including Ullrich Congenital Myopathy and Bethlem Myopathy. Collagen VI is thought to contribute to myopathy, at least in part, by mediating muscle fiber integrity by anchoring myoblasts to the muscle basement membrane. Interestingly, collagen VI myopathies present with restrictive respiratory insufficiency, thought to be due primarily to thoracic muscular weakening. Although it was recently recognized as one of the (if not the) most abundant collagens in the mammalian lung, there is a substantive knowledge gap concerning its role in respiratory system development and function. A few studies have suggested that collagen VI insufficiency is associated with airway epithelial cell survival and altered lung function. Our recent work suggested collagen VI may be a genomic risk factor for chronic lung disease in premature infants. Using this as motivation, we thoroughly assessed the role of collagen VI in lung development and in lung epithelial cell biology. Here, we describe the state-of-the-art for collagen VI cell and developmental biology within the respiratory system, and reveal its essential roles in normal developmental processes and airway epithelial cell phenotype and intracellular signaling.
Collapse
Affiliation(s)
- Jared A. Mereness
- Division of Neonatology and Pediatric Molecular and Personalized Medicine Program, Department of Pediatrics, University of Rochester, Rochester, NY, USA
- Department of Biomedical Genetics, University of Rochester, Rochester, NY, USA
| | - Thomas J. Mariani
- Corresponding author. Division of Neonatology and Pediatric Molecular and Personalized Medicine Program, University of Rochester Medical Center, 601 Elmwood Ave, Box 850, Rochester, NY 14642, USA.
| |
Collapse
|
16
|
Woeller CF, Lim SA, Roztocil E, Yee M, Beier EE, Puzas JE, O'Reilly MA. Neonatal hyperoxia impairs adipogenesis of bone marrow-derived mesenchymal stem cells and fat accumulation in adult mice. Free Radic Biol Med 2021; 167:287-298. [PMID: 33757863 PMCID: PMC8096722 DOI: 10.1016/j.freeradbiomed.2021.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 03/03/2021] [Accepted: 03/04/2021] [Indexed: 10/21/2022]
Abstract
Preterm birth is a risk factor for growth failure and development of respiratory disease in children and young adults. Their early exposure to oxygen may contribute to lung disease because adult mice exposed to hyperoxia as neonates display reduced lung function, changes in the host response to respiratory viral infections, and develop pulmonary hypertension and heart failure that shortens their lifespan. Here, we provide new evidence that neonatal hyperoxia also impairs growth by inhibiting fat accumulation. Failure to accumulate fat may reflect a systemic defect in adipogenic potential of stem cells because bone marrow-derived mesenchymal cells (BMSCs) isolated from the mice grew slower and were more oxidized compared to controls. They also displayed reduced capacity to accumulate lipid and differentiate into adipocytes. BMSCs from adult mice exposed to neonatal hyperoxia express lower levels of peroxisome proliferator-activated receptor gamma (PPARγ), a transcription factor that drives adipocyte differentiation. The defect in adipogenesis was rescued by expressing PPARγ in these cells. These findings reveal early life exposure to high levels of oxygen may suppresses fat accumulation and impair adipogenic differentiation upstream of PPARγ signaling, thus potentially contributing to growth failure seen in people born preterm.
Collapse
Affiliation(s)
- Collynn F Woeller
- Departments of Ophthalmology, School of Medicine and Dentistry, University of Rochester, Rochester, NY, 14642, USA.
| | - Sydney A Lim
- Departments of Pediatrics, School of Medicine and Dentistry, University of Rochester, Rochester, NY, 14642, USA
| | - Elisa Roztocil
- Departments of Ophthalmology, School of Medicine and Dentistry, University of Rochester, Rochester, NY, 14642, USA
| | - Min Yee
- Departments of Pediatrics, School of Medicine and Dentistry, University of Rochester, Rochester, NY, 14642, USA
| | - Eric E Beier
- Departments of Orthopaedics, School of Medicine and Dentistry, University of Rochester, Rochester, NY, 14642, USA
| | - J Edward Puzas
- Departments of Orthopaedics, School of Medicine and Dentistry, University of Rochester, Rochester, NY, 14642, USA
| | - Michael A O'Reilly
- Departments of Ophthalmology, School of Medicine and Dentistry, University of Rochester, Rochester, NY, 14642, USA; Departments of Pediatrics, School of Medicine and Dentistry, University of Rochester, Rochester, NY, 14642, USA.
| |
Collapse
|
17
|
α1,3-Fucosyltransferase-IX, an enzyme of pulmonary endogenous lung stem cell marker SSEA-1, alleviates experimental bronchopulmonary dysplasia. Pediatr Res 2021; 89:1126-1135. [PMID: 32303051 DOI: 10.1038/s41390-020-0891-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 02/19/2020] [Accepted: 03/19/2020] [Indexed: 11/08/2022]
Abstract
BACKGROUND Endogenous pulmonary stem cells (PSCs) play an important role in lung development and repair; however, little is known about their role in bronchopulmonary dysplasia (BPD). We hypothesize that an endogenous PSC marker stage-specific embryonic antigen-1 (SSEA-1) and its enzyme, α1,3-fucosyltransferase IX (FUT9) play an important role in decreasing inflammation and restoring lung structure in experimental BPD. METHODS We studied the expression of SSEA-1, and its enzyme FUT9, in wild-type (WT) C57BL/6 mice, in room air and hyperoxia. Effects of intraperitoneal administration of recombinant human FUT9 (rhFUT9) on lung airway and parenchymal inflammation, alveolarization, and apoptosis were evaluated. RESULTS On hyperoxia exposure, SSEA-1 significantly decreased at postnatal day 14 in hyperoxia-exposed BPD mice, accompanied by a decrease in FUT9. BPD and respiratory distress syndrome (RDS) in human lungs showed decreased expression of SSEA-1 as compared to their term controls. Importantly, intraperitoneal administration of FUT9 in the neonatal BPD mouse model resulted in significant decrease in pulmonary airway (but not lung parenchymal) inflammation, alveolar-capillary leakage, alveolar simplification, and cell death in the hyperoxia-exposed BPD mice. CONCLUSIONS An important role of endogenous PSC marker SSEA-1 and its enzyme FUT9 is demonstrated, indicating early systemic intervention with FUT9 as a potential therapeutic option for BPD. IMPACT Administration of rhFUT9, an enzyme of endogenous stem cell marker SSEA-1, reduces pulmonary airway (but not lung parenchymal) inflammation, alveolar-capillary leak and cell death in the BPD mouse model. SSEA-1 is reported for the first time in experimental BPD models, and in human RDS and BPD. rhFUT9 treatment ameliorates hyperoxia-induced lung injury in a developmentally appropriate BPD mouse model. Our results have translational potential as a therapeutic modality for BPD in the developing lung.
Collapse
|
18
|
Liu M, Iosef C, Rao S, Domingo-Gonzalez R, Fu S, Snider P, Conway SJ, Umbach GS, Heilshorn SC, Dewi RE, Dahl MJ, Null DM, Albertine KH, Alvira CM. Transforming Growth Factor-induced Protein Promotes NF-κB-mediated Angiogenesis during Postnatal Lung Development. Am J Respir Cell Mol Biol 2021; 64:318-330. [PMID: 33264084 PMCID: PMC7909333 DOI: 10.1165/rcmb.2020-0153oc] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 10/29/2020] [Indexed: 12/23/2022] Open
Abstract
Pulmonary angiogenesis is a key driver of alveolarization. Our prior studies showed that NF-κB promotes pulmonary angiogenesis during early alveolarization. However, the mechanisms regulating temporal-specific NF-κB activation in the pulmonary vasculature are unknown. To identify mechanisms that activate proangiogenic NF-κB signaling in the developing pulmonary vasculature, proteomic analysis of the lung secretome was performed using two-dimensional difference gel electrophoresis. NF-κB activation and angiogenic function was assessed in primary pulmonary endothelial cells (PECs) and TGFBI (transforming growth factor-β-induced protein)-regulated genes identified using RNA sequencing. Alveolarization and pulmonary angiogenesis was assessed in wild-type and Tgfbi null mice exposed to normoxia or hyperoxia. Lung TGFBI expression was determined in premature lambs supported by invasive and noninvasive respiratory support. Secreted factors from the early alveolar, but not the late alveolar or adult lung, promoted proliferation and migration in quiescent, adult PECs. Proteomic analysis identified TGFBI as one protein highly expressed by the early alveolar lung that promoted PEC migration by activating NF-κB via αvβ3 integrins. RNA sequencing identified Csf3 as a TGFBI-regulated gene that enhances nitric oxide production in PECs. Loss of TGFBI in mice exaggerated the impaired pulmonary angiogenesis induced by chronic hyperoxia, and TGFBI expression was disrupted in premature lambs with impaired alveolarization. Our studies identify TGFBI as a developmentally regulated protein that promotes NF-κB-mediated angiogenesis during early alveolarization by enhancing nitric oxide production. We speculate that dysregulation of TGFBI expression may contribute to diseases marked by impaired alveolar and vascular growth.
Collapse
Affiliation(s)
- Min Liu
- Department of Pediatrics, Center for Excellence in Pulmonary Biology, and
| | - Cristiana Iosef
- Department of Pediatrics, Center for Excellence in Pulmonary Biology, and
| | - Shailaja Rao
- Department of Pediatrics, Center for Excellence in Pulmonary Biology, and
| | | | - Sha Fu
- Department of Pediatrics, Center for Excellence in Pulmonary Biology, and
- Liuyang People's Hospital, Hunan, China
| | - Paige Snider
- Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana
| | - Simon J Conway
- Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana
| | - Gray S Umbach
- Department of Pediatrics, Center for Excellence in Pulmonary Biology, and
- University of Texas Southwestern Medical School, Dallas, Texas; and
| | - Sarah C Heilshorn
- Department of Materials Science and Engineering, Stanford University, Stanford, California
| | - Ruby E Dewi
- Department of Materials Science and Engineering, Stanford University, Stanford, California
| | - Mar J Dahl
- Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, Utah
| | - Donald M Null
- Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, Utah
| | - Kurt H Albertine
- Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, Utah
| | - Cristina M Alvira
- Department of Pediatrics, Center for Excellence in Pulmonary Biology, and
| |
Collapse
|
19
|
Kim JM, Lee SY, Lee JY. Melatonin for the prevention of fetal injury associated with intrauterine inflammation. Am J Reprod Immunol 2021; 86:e13402. [PMID: 33583108 DOI: 10.1111/aji.13402] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 02/08/2021] [Accepted: 02/10/2021] [Indexed: 01/06/2023] Open
Abstract
Intrauterine inflammation is shown to be associated with preterm birth, fetal inflammatory response syndrome, and other pregnancy-related comorbidities such as central nervous system diseases including cerebral palsy and periventricular leukomalacia, pulmonary diseases such as bronchopulmonary dysplasia and respiratory distress syndrome, and necrotizing enterocolitis, to name a few. Many animal studies on intrauterine inflammation demonstrate that ascending infection of reproductive organs or the production of proinflammatory cytokines by some stimuli in utero results in such manifestations. Melatonin, known for its primary function in maintaining circadian rhythm, is now recognized as one of the most potent antioxidant and anti-inflammatory drugs. In some studies, melatonin injection in pregnant animals with intrauterine inflammation significantly reduced the number of preterm births, the severity of structural disintegration of the fetal lungs observed in bronchopulmonary dysplasia, and perinatal brain injuries with improvement in neuromotor function. These implicated benefits of melatonin in pregnant women with intrauterine inflammation seem promising in many research studies, strongly supporting the hypothesis that melatonin has antioxidative and anti-inflammatory properties that can potentially be taken by pregnant women who are at risk of having intrauterine inflammation. In this review, the potential of melatonin for improving outcomes of the pregnancies with intrauterine inflammation will be discussed.
Collapse
Affiliation(s)
- Jang Mee Kim
- Department of Medicine, CHA University School of Medicine, Pocheon, Korea
| | - Seung-Yun Lee
- Educational Competence Support Center, Hanshin University, Osan, Korea
| | - Ji Yeon Lee
- Department of Obstetrics and Gynecology, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea
| |
Collapse
|
20
|
Freeman A, Qiao L, Olave N, Rezonzew G, Gentle S, Halloran B, Pryhuber GS, Gaggar A, Tipple TE, Ambalavanan N, Lal CV. MicroRNA 219-5p inhibits alveolarization by reducing platelet derived growth factor receptor-alpha. Respir Res 2021; 22:57. [PMID: 33596914 PMCID: PMC7891005 DOI: 10.1186/s12931-021-01654-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 02/07/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND MicroRNA (miR) are small conserved RNA that regulate gene expression post-transcription. Previous genome-wide analysis studies in preterm infants indicate that pathways of miR 219-5p are important in infants with Bronchopulmonary Dysplasia (BPD). METHODS Here we report a prospective cohort study of extremely preterm neonates wherein infants diagnosed with severe BPD expressed increased airway miR-219-5p and decreased platelet derived growth factor receptor alpha (PDGFR-α), a target of mir-219-5p and a key regulator of alveolarization, compared to post-conception age-matched term infants. RESULTS miR-219-5p was highly expressed in the pulmonary epithelial lining in lungs of infants with BPD by in situ hybridization of human infant lungs. In both in vitro and in vivo (mouse) models of BPD, miR-219-5p was increased on exposure to hyperoxia compared with the normoxia control, with a complementary decrease of PDGFR-α. To further confirm the target relationship between miR-219 and PDGFR-α, pulmonary epithelial cells (MLE12) and lung primary fibroblasts were treated with a mimic of miR-219-5p and a locked nucleic acid (LNA) based inhibitor of miR-219-5p. In comparison with the control group, the level of miR-219 increased significantly after miR-219 mimic treatment, while the level of PDGFR-α declined markedly. LNA exposure increased PDGFR-α. Moreover, in BPD mouse model, over-expression of miR-219-5p inhibited alveolar development, indicated by larger alveolar spaces accompanied by reduced septation. CONCLUSIONS Taken together, our results demonstrate that increased miR-219-5p contributes to the pathogenesis of BPD by targeting and reducing PDGFR-α. The use of specific miRNA antagonists may be a therapeutic strategy for preventing the development of BPD.
Collapse
Affiliation(s)
- Amelia Freeman
- Division of Neonatology, Department of Pediatrics, Women and Infants Center, University of Alabama At Birmingham, 176F Suite 9380619 South 19th Street, Birmingham, AL, 35249-7335, USA
| | - Luhua Qiao
- Division of Neonatology, Department of Pediatrics, Women and Infants Center, University of Alabama At Birmingham, 176F Suite 9380619 South 19th Street, Birmingham, AL, 35249-7335, USA
| | - Nelida Olave
- Division of Neonatology, Department of Pediatrics, Women and Infants Center, University of Alabama At Birmingham, 176F Suite 9380619 South 19th Street, Birmingham, AL, 35249-7335, USA
| | - Gabriel Rezonzew
- Division of Neonatology, Department of Pediatrics, Women and Infants Center, University of Alabama At Birmingham, 176F Suite 9380619 South 19th Street, Birmingham, AL, 35249-7335, USA
| | - Samuel Gentle
- Division of Neonatology, Department of Pediatrics, Women and Infants Center, University of Alabama At Birmingham, 176F Suite 9380619 South 19th Street, Birmingham, AL, 35249-7335, USA
| | - Brian Halloran
- Division of Neonatology, Department of Pediatrics, Women and Infants Center, University of Alabama At Birmingham, 176F Suite 9380619 South 19th Street, Birmingham, AL, 35249-7335, USA
| | - Gloria S Pryhuber
- Department of Pediatrics, University of Rochester Medical Center, Rochester, NY, USA
| | - Amit Gaggar
- Program in Matrix and Pulmonary Biology, Department of Medicine, University of Alabama, Birmingham, AL, USA
| | - Trent E Tipple
- Center for Pregnancy and Newborn Research, Section of Neonatal-Perinatal Medicine, University of Oklahoma College of Medicine, Oklahoma, OK, USA
| | - Namasivayam Ambalavanan
- Division of Neonatology, Department of Pediatrics, Women and Infants Center, University of Alabama At Birmingham, 176F Suite 9380619 South 19th Street, Birmingham, AL, 35249-7335, USA
| | - Charitharth Vivek Lal
- Division of Neonatology, Department of Pediatrics, Women and Infants Center, University of Alabama At Birmingham, 176F Suite 9380619 South 19th Street, Birmingham, AL, 35249-7335, USA.
- Program in Matrix and Pulmonary Biology, Department of Medicine, University of Alabama, Birmingham, AL, USA.
| |
Collapse
|
21
|
Wickramasinghe LC, van Wijngaarden P, Johnson C, Tsantikos E, Hibbs ML. An Experimental Model of Bronchopulmonary Dysplasia Features Long-Term Retinal and Pulmonary Defects but Not Sustained Lung Inflammation. Front Pediatr 2021; 9:689699. [PMID: 34527643 PMCID: PMC8435611 DOI: 10.3389/fped.2021.689699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 08/06/2021] [Indexed: 11/19/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a severe lung disease that affects preterm infants receiving oxygen therapy. No standardized, clinically-relevant BPD model exists, hampering efforts to understand and treat this disease. This study aimed to evaluate and confirm a candidate model of acute and chronic BPD, based on exposure of neonatal mice to a high oxygen environment during key lung developmental stages affected in preterm infants with BPD. Neonatal C57BL/6 mouse pups were exposed to 75% oxygen from postnatal day (PN)-1 for 5, 8, or 14 days, and their lungs were examined at PN14 and PN40. While all mice showed some degree of lung damage, mice exposed to hyperoxia for 8 or 14 days exhibited the greatest septal wall thickening and airspace enlargement. Furthermore, when assessed at PN40, mice exposed for 8 or 14 days to supplemental oxygen exhibited augmented septal wall thickness and emphysema, with the severity increased with the longer exposure, which translated into a decline in respiratory function at PN80 in the 14-day model. In addition to this, mice exposed to hyperoxia for 8 days showed significant expansion of alveolar epithelial type II cells as well as the greatest fibrosis when assessed at PN40 suggesting a healing response, which was not seen in mice exposed to high oxygen for a longer period. While evidence of lung inflammation was apparent at PN14, chronic inflammation was absent from all three models. Finally, exposure to high oxygen for 14 days also induced concurrent outer retinal degeneration. This study shows that early postnatal exposure to high oxygen generates hallmark acute and chronic pathologies in mice that highlights its use as a translational model of BPD.
Collapse
Affiliation(s)
- Lakshanie C Wickramasinghe
- Leukocyte Signalling Laboratory, Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Peter van Wijngaarden
- Department of Surgery - Ophthalmology, University of Melbourne, Melbourne, VIC, Australia.,Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, VIC, Australia
| | - Chad Johnson
- Monash Micro Imaging, Alfred Research Alliance, Monash University, Melbourne, VIC, Australia
| | - Evelyn Tsantikos
- Leukocyte Signalling Laboratory, Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Margaret L Hibbs
- Leukocyte Signalling Laboratory, Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, VIC, Australia
| |
Collapse
|
22
|
Mendelian randomization and experimental IUGR reveal the adverse effect of low birth weight on lung structure and function. Sci Rep 2020; 10:22395. [PMID: 33372189 PMCID: PMC7769986 DOI: 10.1038/s41598-020-79245-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 12/03/2020] [Indexed: 11/17/2022] Open
Abstract
Intrauterine growth restriction (IUGR) and low birth weigth (LBW) are risk factors for neonatal chronic lung disease. However, maternal and fetal genetic factors and the molecular mechanisms remain unclear. We investigated the relationship between LBW and lung function with Mendelian randomisation analyses and studied angiogenesis in a low protein diet rat model of IUGR. Our data indicate a possible association between LBW and reduced FEV1 (p = 5.69E−18, MR-PRESSO) and FVC (6.02E-22, MR-PRESSO). Complimentary, we demonstrated two-phased perinatal programming after IUGR. The intrauterine phase (embryonic day 21) is earmarked by a reduction of endothelial cell markers (e.g. CD31) as well as mRNA expression of angiogenic factors (e.g., Vegfa, Flt1, Klf4). Protein analysis identified an activation of anti-angiogenic mTOR effectors. In the postnatal phase, lung capillaries (< 20 µm) were significantly reduced, expression of CD31 and VE-Cadherin were unaffected, whereas SMAD1/5/8 signaling and Klf4 protein were increased (p < 0.01). Moreover, elevated proteolytic activity of MMP2 and MMP9 was linked to a 50% reduction of lung elastic fibres. In conclusion, we show a possible link of LBW in humans and reduced lung function in adulthood. Experimental IUGR identifies an intrauterine phase with inhibition of angiogenic signaling, and a postnatal phase with proteolytic activity and reduced elastic fibres.
Collapse
|
23
|
Xu J, Mao X, Jin R, Yin J, Lu K, Guo Y, Zhang M, Cheng R. Neutrophil extracellular traps degrade fibronectin in a rat model of bronchopulmonary dysplasia induced by perinatal exposure to lipopolysaccharide. J Cell Mol Med 2020; 24:14645-14649. [PMID: 33094902 PMCID: PMC7754010 DOI: 10.1111/jcmm.15842] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 07/02/2020] [Accepted: 08/19/2020] [Indexed: 01/21/2023] Open
Affiliation(s)
- Junjie Xu
- Department of Neonatal Medical Center, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Xiaonan Mao
- Department of Neonatal Medical Center, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Rui Jin
- Department of Neonatal Medical Center, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Jiao Yin
- Department of Neonatal Medical Center, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Keyu Lu
- Department of Neonatal Medical Center, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Yan Guo
- Department of Neonatal Medical Center, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Mingshun Zhang
- NHC Key Laboratory of Antibody Technique, Department of Immunology, Nanjing Medical University, Nanjing, China
| | - Rui Cheng
- Department of Neonatal Medical Center, Children's Hospital of Nanjing Medical University, Nanjing, China
| |
Collapse
|
24
|
Gouveia L, Kraut S, Hadzic S, Vazquéz-Liébanas E, Kojonazarov B, Wu CY, Veith C, He L, Mermelekas G, Schermuly RT, Weissmann N, Betsholtz C, Andrae J. Lung developmental arrest caused by PDGF-A deletion: consequences for the adult mouse lung. Am J Physiol Lung Cell Mol Physiol 2020; 318:L831-L843. [PMID: 32186397 DOI: 10.1152/ajplung.00295.2019] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
PDGF-A is a key contributor to lung development in mice. Its expression is needed for secondary septation of the alveoli and deletion of the gene leads to abnormally enlarged alveolar air spaces in mice. In humans, the same phenotype is the hallmark of bronchopulmonary dysplasia (BPD), a disease that affects premature babies and may have long lasting consequences in adulthood. So far, the knowledge regarding adult effects of developmental arrest in the lung is limited. This is attributable to few follow-up studies of BPD survivors and lack of good experimental models that could help predict the outcomes of this early age disease for the adult individual. In this study, we used the constitutive lung-specific Pdgfa deletion mouse model to analyze the consequences of developmental lung defects in adult mice. We assessed lung morphology, physiology, cellular content, ECM composition and proteomics data in mature mice, that perinatally exhibited lungs with a BPD-like morphology. Histological and physiological analyses both revealed that enlarged alveolar air spaces remained until adulthood, resulting in higher lung compliance and higher respiratory volume in knockout mice. Still, no or only small differences were seen in cellular, ECM and protein content when comparing knockout and control mice. Taken together, our results indicate that Pdgfa deletion-induced lung developmental arrest has consequences for the adult lung at the morphological and functional level. In addition, these mice can reach adulthood with a BPD-like phenotype, which makes them a robust model to further investigate the pathophysiological progression of the disease and test putative regenerative therapies.
Collapse
Affiliation(s)
- Leonor Gouveia
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Simone Kraut
- Justus-Liebig University of Giessen (JLUG), Excellence Cluster Cardio-Pulmonary Institute (CPI), Universities of Giessen and Marburg Lung Center (UGMLC), member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Stefan Hadzic
- Justus-Liebig University of Giessen (JLUG), Excellence Cluster Cardio-Pulmonary Institute (CPI), Universities of Giessen and Marburg Lung Center (UGMLC), member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Elisa Vazquéz-Liébanas
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Baktybek Kojonazarov
- Justus-Liebig University of Giessen (JLUG), Excellence Cluster Cardio-Pulmonary Institute (CPI), Universities of Giessen and Marburg Lung Center (UGMLC), member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Cheng-Yu Wu
- Justus-Liebig University of Giessen (JLUG), Excellence Cluster Cardio-Pulmonary Institute (CPI), Universities of Giessen and Marburg Lung Center (UGMLC), member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Christine Veith
- Justus-Liebig University of Giessen (JLUG), Excellence Cluster Cardio-Pulmonary Institute (CPI), Universities of Giessen and Marburg Lung Center (UGMLC), member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Liqun He
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Georgios Mermelekas
- Cancer Proteomics Mass Spectrometry, Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Ralph Theo Schermuly
- Justus-Liebig University of Giessen (JLUG), Excellence Cluster Cardio-Pulmonary Institute (CPI), Universities of Giessen and Marburg Lung Center (UGMLC), member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Norbert Weissmann
- Justus-Liebig University of Giessen (JLUG), Excellence Cluster Cardio-Pulmonary Institute (CPI), Universities of Giessen and Marburg Lung Center (UGMLC), member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Christer Betsholtz
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden.,Integrated Cardio Metabolic Centre, Karolinska Institutet, Huddinge, Sweden
| | - Johanna Andrae
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| |
Collapse
|
25
|
S-endoglin expression is induced in hyperoxia and contributes to altered pulmonary angiogenesis in bronchopulmonary dysplasia development. Sci Rep 2020; 10:3043. [PMID: 32080296 PMCID: PMC7033222 DOI: 10.1038/s41598-020-59928-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 02/05/2020] [Indexed: 12/11/2022] Open
Abstract
Altered pulmonary angiogenesis contributes to disrupted alveolarization, which is the main characteristic of bronchopulmonary dysplasia (BPD). Transforming growth factor β (TGFβ) plays an important role during lung vascular development, and recent studies have demonstrated that endoglin is engaged in the modulation of TGFβ downstream signalling. Although there are two different isoforms of endoglin, L- and S-endoglin, little is known about the effect of S-endoglin in developing lungs. We analysed the expression of both L- and S-endoglin in the lung vasculature and its contribution to TGFβ-activin-like kinase (ALK)-Smad signalling with respect to BPD development. Hyperoxia impaired pulmonary angiogenesis accompanied by alveolar simplification in neonatal mouse lungs. S-endoglin, phosphorylated Smad2/3 and connective tissue growth factor levels were significantly increased in hyperoxia-exposed mice, while L-endoglin, phosphor-Smad1/5 and platelet-endothelial cell adhesion molecule-1 levels were significantly decreased. Hyperoxia suppressed the tubular growth of human pulmonary microvascular endothelial cells (ECs), and the selective inhibition of ALK5 signalling restored tubular growth. These results indicate that hyperoxia alters the balance in two isoforms of endoglin towards increased S-endoglin and that S-endoglin attenuates TGFβ-ALK1-Smad1/5 signalling but stimulates TGFβ-ALK5-Smad2/3 signalling in pulmonary ECs, which may lead to impaired pulmonary angiogenesis in developing lungs.
Collapse
|
26
|
Schmiedl A, Bokel K, Huhn V, Ionescu L, Zscheppang K, Dammann CEL. Bone marrow stem cells accelerate lung maturation and prevent the LPS-induced delay of morphological and functional fetal lung development in the presence of ErbB4. Cell Tissue Res 2020; 380:547-564. [PMID: 32055958 DOI: 10.1007/s00441-019-03145-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 11/18/2019] [Indexed: 12/28/2022]
Abstract
ErbB4 is a regulator in lung development and disease. Prenatal infection is an important risk factor for the delay of morphologic lung development, while promoting the maturation of the surfactant system. Bone marrow-derived mesenchymal stem cells (BMSCs) have the potential to prevent lung injury. We hypothesized that BMSCs in comparison with hematopoietic control stem cells (HPSCs) minimize the lipopolysaccharide (LPS)-induced lung injury only when functional ErbB4 receptor is present. We injected LPS and/or murine green fluorescent protein-labeled BMSCs or HPSCs into the amniotic cavity of transgenic ErbB4heart mothers at gestational day 17. Fetal lungs were analyzed 24 h later. BMSCs minimized significantly LPS-induced delay in morphological lung maturation consisting of a stereologically measured increase in mesenchyme and septal thickness and a decrease of future airspace and septal surface. This effect was more prominent and significant in the ErbB4heart+/- lungs, suggesting that the presence of functioning ErbB4 signaling is required. BMSC also diminished the LPS induced increase in surfactant protein (Sftp)a mRNA and decrease in Sftpc mRNA is only seen if ErbB4 is present. The reduction of morphological delay of lung development and of levels of immune-modulating Sftp was more pronounced in the presence of the ErbB4 receptor. Thus, ErbB4 may be required for the protective signaling of BMSCs.
Collapse
Affiliation(s)
- Andreas Schmiedl
- Institute of Functional and Applied Anatomy, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany.
- Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center of Lung Research (DZL), Hannover, Germany.
| | - Kyra Bokel
- Institute of Functional and Applied Anatomy, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
| | - Verena Huhn
- Department of Pediatric Pulmonology and Neonatology, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
| | - Lavinia Ionescu
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada
| | - Katja Zscheppang
- Department of Pediatric Pulmonology and Neonatology, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
| | - Christiane E L Dammann
- Department of Pediatric Pulmonology and Neonatology, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
- Division of Newborn Medicine, Department of Pediatrics, Floating Hospital for Children at Tufts Medical Center, Boston, MA, USA
- Graduate School for Biomedical Sciences, Tufts University, Boston, MA, USA
| |
Collapse
|
27
|
Wagener I, Jungen M, von Hörsten S, Stephan M, Schmiedl A. Postnatal morphological lung development of wild type and CD26/DPP4 deficient rat pups in dependency of LPS exposure. Ann Anat 2019; 229:151423. [PMID: 31654734 DOI: 10.1016/j.aanat.2019.151423] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 09/23/2019] [Accepted: 09/24/2019] [Indexed: 01/16/2023]
Abstract
BACKGROUND Rodents are born with morphological immature lungs and an intact surfactant system. CD26/DPP4 is a multifactorial transmembrane integral type II protein, which is involved in physiological and pathophysiological processes and is already expressed during development. CD26/DPP4, called CD26 in the following, is able to enhance or dampen differently triggered inflammation. LPS exposure often used to simulate perinatal infection delays lung development. OBJECTIVE A perinatal LPS rat model was used to test the hypothesis that CD26 deficiency modulates LPS-induced retardation in morphological lung development. METHODS New born Fischer CD26 positive (CD26+) and deficient (CD26-) rats were exposed to LPS on postnatal day (day post partum, dpp) 3 and 5. Morphological parameters of lung development were determined stereologically. Lung development was analysed in 7, 10 14 and 21day old rats. RESULTS Compared to controls LPS application resulted (1) in a mild inflammation independent of the strain, (2) in significantly lower total surface and volume of alveolar septa combined with significantly higher total volume of airspaces and alveolar size on dpp 7 in both substrains. However, compared to controls in LPS treated CD26- rats significant lower values of total septal surface and volume combined with higher values of total parenchymal airspaces and alveolar size were found until the end of classical alveolarization (dpp14). In LPS treated CD26+ rat pups the retardation was abolished already on dpp 10. CONCLUSION In absence of CD26, LPS enhances the delay of morphological lung development. Morphological recovery was slower after the end of LPS exposure in CD26 deficient lungs.
Collapse
Affiliation(s)
- Inga Wagener
- Functional and Applied Anatomy, Hannover Medical School, Hannover, Germany.
| | - Meike Jungen
- Functional and Applied Anatomy, Hannover Medical School, Hannover, Germany.
| | - Stephan von Hörsten
- Franz-Penzoldt-Centre, Experimental Therapy, Friedrich-Alexander-University of Erlangen, Germany.
| | - Michael Stephan
- Functional and Applied Anatomy, Hannover Medical School, Hannover, Germany; Clinic for Psychosomatics and Psychotherapy, Hannover Medical School, 30625 Hannover, Germany.
| | - Andreas Schmiedl
- Functional and Applied Anatomy, Hannover Medical School, Hannover, Germany.
| |
Collapse
|
28
|
McCarthy R, Martin-Fairey C, Sojka DK, Herzog ED, Jungheim ES, Stout MJ, Fay JC, Mahendroo M, Reese J, Herington JL, Plosa EJ, Shelton EL, England SK. Mouse models of preterm birth: suggested assessment and reporting guidelines. Biol Reprod 2019; 99:922-937. [PMID: 29733339 PMCID: PMC6297318 DOI: 10.1093/biolre/ioy109] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 04/30/2018] [Indexed: 02/03/2023] Open
Abstract
Preterm birth affects approximately 1 out of every 10 births in the United States, leading to high rates of mortality and long-term negative health consequences. To investigate the mechanisms leading to preterm birth so as to develop prevention strategies, researchers have developed numerous mouse models of preterm birth. However, the lack of standard definitions for preterm birth in mice limits our field's ability to compare models and make inferences about preterm birth in humans. In this review, we discuss numerous mouse preterm birth models, propose guidelines for experiments and reporting, and suggest markers that can be used to assess whether pups are premature or mature. We argue that adoption of these recommendations will enhance the utility of mice as models for preterm birth.
Collapse
Affiliation(s)
- Ronald McCarthy
- Center for Reproductive Health Sciences, Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Carmel Martin-Fairey
- Center for Reproductive Health Sciences, Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Dorothy K Sojka
- Rheumatology Division, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Erik D Herzog
- Department of Biology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Emily S Jungheim
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Molly J Stout
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Justin C Fay
- Department of Biology, University of Rochester, Rochester, New York, USA
| | - Mala Mahendroo
- Department of Obstetrics and Gynecology University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Jeff Reese
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Jennifer L Herington
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Erin J Plosa
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Elaine L Shelton
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Sarah K England
- Center for Reproductive Health Sciences, Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, Missouri, USA
| |
Collapse
|
29
|
Ding J, Ahangari F, Espinoza CR, Chhabra D, Nicola T, Yan X, Lal CV, Hagood JS, Kaminski N, Bar-Joseph Z, Ambalavanan N. Integrating multiomics longitudinal data to reconstruct networks underlying lung development. Am J Physiol Lung Cell Mol Physiol 2019; 317:L556-L568. [PMID: 31432713 DOI: 10.1152/ajplung.00554.2018] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
A comprehensive understanding of the dynamic regulatory networks that govern postnatal alveolar lung development is still lacking. To construct such a model, we profiled mRNA, microRNA, DNA methylation, and proteomics of developing murine alveoli isolated by laser capture microdissection at 14 predetermined time points. We developed a detailed comprehensive and interactive model that provides information about the major expression trajectories, the regulators of specific key events, and the impact of epigenetic changes. Intersecting the model with single-cell RNA-Seq data led to the identification of active pathways in multiple or individual cell types. We then constructed a similar model for human lung development by profiling time-series human omics data sets. Several key pathways and regulators are shared between the reconstructed models. We experimentally validated the activity of a number of predicted regulators, leading to new insights about the regulation of innate immunity during lung development.
Collapse
Affiliation(s)
- Jun Ding
- Computational Biology Department, Carnegie Mellon University, Pittsburgh, Pennsylvania
| | - Farida Ahangari
- Section of Pulmonary, Critical Care, and Sleep Medicine, Yale School of Medicine, New Haven, Connecticut
| | - Celia R Espinoza
- Division of Respiratory Medicine, Department of Pediatrics, University of California, San Diego, La Jolla, California
| | - Divya Chhabra
- Division of Respiratory Medicine, Department of Pediatrics, University of California, San Diego, La Jolla, California.,Rady Children's Hospital of San Diego, San Diego California
| | - Teodora Nicola
- Division of Neonatology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama
| | - Xiting Yan
- Section of Pulmonary, Critical Care, and Sleep Medicine, Yale School of Medicine, New Haven, Connecticut
| | - Charitharth V Lal
- Division of Neonatology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama
| | - James S Hagood
- Division of Respiratory Medicine, Department of Pediatrics, University of California, San Diego, La Jolla, California.,Rady Children's Hospital of San Diego, San Diego California
| | - Naftali Kaminski
- Section of Pulmonary, Critical Care, and Sleep Medicine, Yale School of Medicine, New Haven, Connecticut
| | - Ziv Bar-Joseph
- Computational Biology Department, Carnegie Mellon University, Pittsburgh, Pennsylvania
| | - Namasivayam Ambalavanan
- Division of Neonatology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama
| |
Collapse
|
30
|
Li C, Lee MK, Gao F, Webster S, Di H, Duan J, Yang CY, Bhopal N, Peinado N, Pryhuber G, Smith SM, Borok Z, Bellusci S, Minoo P. Secondary crest myofibroblast PDGFRα controls the elastogenesis pathway via a secondary tier of signaling networks during alveologenesis. Development 2019; 146:dev.176354. [PMID: 31331942 PMCID: PMC6703710 DOI: 10.1242/dev.176354] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 07/11/2019] [Indexed: 12/16/2022]
Abstract
Postnatal alveolar formation is the most important and the least understood phase of lung development. Alveolar pathologies are prominent in neonatal and adult lung diseases. The mechanisms of alveologenesis remain largely unknown. We inactivated Pdgfra postnatally in secondary crest myofibroblasts (SCMF), a subpopulation of lung mesenchymal cells. Lack of Pdgfra arrested alveologenesis akin to bronchopulmonary dysplasia (BPD), a neonatal chronic lung disease. The transcriptome of mutant SCMF revealed 1808 altered genes encoding transcription factors, signaling and extracellular matrix molecules. Elastin mRNA was reduced, and its distribution was abnormal. Absence of Pdgfra disrupted expression of elastogenic genes, including members of the Lox, Fbn and Fbln families. Expression of EGF family members increased when Tgfb1 was repressed in mouse. Similar, but not identical, results were found in human BPD lung samples. In vitro, blocking PDGF signaling decreased elastogenic gene expression associated with increased Egf and decreased Tgfb family mRNAs. The effect was reversible by inhibiting EGF or activating TGFβ signaling. These observations demonstrate the previously unappreciated postnatal role of PDGFA/PDGFRα in controlling elastogenic gene expression via a secondary tier of signaling networks composed of EGF and TGFβ.
Collapse
Affiliation(s)
- Changgong Li
- Department of Pediatrics, Division of Newborn Medicine, University of Southern California and Children's Hospital Los Angeles, Los Angeles, CA 90033, USA
| | - Matt K Lee
- Department of Pediatrics, Division of Newborn Medicine, University of Southern California and Children's Hospital Los Angeles, Los Angeles, CA 90033, USA
| | - Feng Gao
- Department of Pediatrics, Division of Newborn Medicine, University of Southern California and Children's Hospital Los Angeles, Los Angeles, CA 90033, USA
| | - Sha Webster
- Department of Pediatrics, Division of Newborn Medicine, University of Southern California and Children's Hospital Los Angeles, Los Angeles, CA 90033, USA
| | - Helen Di
- Department of Pediatrics, Division of Newborn Medicine, University of Southern California and Children's Hospital Los Angeles, Los Angeles, CA 90033, USA
| | - Jiang Duan
- Department of Pediatrics, First Affiliated Hospital of Kunming Medical University, Kunming 650032, Yunnan, China
| | - Chang-Yo Yang
- Department of Pediatrics, Chang Gung Children's Hospital and Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan 33305, Taiwan
| | - Navin Bhopal
- Department of Pediatrics, Division of Newborn Medicine, University of Southern California and Children's Hospital Los Angeles, Los Angeles, CA 90033, USA
| | - Neil Peinado
- Department of Pediatrics, Division of Newborn Medicine, University of Southern California and Children's Hospital Los Angeles, Los Angeles, CA 90033, USA
| | - Gloria Pryhuber
- Department of Pediatrics, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Susan M Smith
- Department of Pediatrics, Division of Newborn Medicine, University of Southern California and Children's Hospital Los Angeles, Los Angeles, CA 90033, USA
| | - Zea Borok
- Hastings Center for Pulmonary Research and Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Saverio Bellusci
- Department of Pediatrics, Division of Newborn Medicine, University of Southern California and Children's Hospital Los Angeles, Los Angeles, CA 90033, USA.,Excellence Cluster Cardio-Pulmonary System (ECCPS), Universities of Giessen and Marburg Lung Center (UGMLC), Justus-Liebig-University Giessen, German Center for Lung Research (DZL), 35392, Giessen, Germany
| | - Parviz Minoo
- Department of Pediatrics, Division of Newborn Medicine, University of Southern California and Children's Hospital Los Angeles, Los Angeles, CA 90033, USA
| |
Collapse
|
31
|
Du Y, Clair GC, Al Alam D, Danopoulos S, Schnell D, Kitzmiller JA, Misra RS, Bhattacharya S, Warburton D, Mariani TJ, Pryhuber GS, Whitsett JA, Ansong C, Xu Y. Integration of transcriptomic and proteomic data identifies biological functions in cell populations from human infant lung. Am J Physiol Lung Cell Mol Physiol 2019; 317:L347-L360. [PMID: 31268347 DOI: 10.1152/ajplung.00475.2018] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Systems biology uses computational approaches to integrate diverse data types to understand cell and organ behavior. Data derived from complementary technologies, for example transcriptomic and proteomic analyses, are providing new insights into development and disease. We compared mRNA and protein profiles from purified endothelial, epithelial, immune, and mesenchymal cells from normal human infant lung tissue. Signatures for each cell type were identified and compared at both mRNA and protein levels. Cell-specific biological processes and pathways were predicted by analysis of concordant and discordant RNA-protein pairs. Cell clustering and gene set enrichment comparisons identified shared versus unique processes associated with transcriptomic and/or proteomic data. Clear cell-cell correlations between mRNA and protein data were obtained from each cell type. Approximately 40% of RNA-protein pairs were coherently expressed. While the correlation between RNA and their protein products was relatively low (Spearman rank coefficient rs ~0.4), cell-specific signature genes involved in functional processes characteristic of each cell type were more highly correlated with their protein products. Consistency of cell-specific RNA-protein signatures indicated an essential framework for the function of each cell type. Visualization and reutilization of the protein and RNA profiles are supported by a new web application, "LungProteomics," which is freely accessible to the public.
Collapse
Affiliation(s)
- Yina Du
- The Perinatal Institute and Section of Neonatology, Perinatal and Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Geremy C Clair
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, Washington
| | - Denise Al Alam
- Developmental Biology and Regenerative Medicine Program, Department of Pediatric Surgery, The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, California.,Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Soula Danopoulos
- Developmental Biology and Regenerative Medicine Program, Department of Pediatric Surgery, The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, California.,Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Daniel Schnell
- Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Heart Institute and Center for Translational Fibrosis Research, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Joseph A Kitzmiller
- The Perinatal Institute and Section of Neonatology, Perinatal and Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Ravi S Misra
- Department of Pediatrics, University of Rochester Medical Center, Rochester, New York
| | - Soumyaroop Bhattacharya
- Department of Pediatrics, University of Rochester Medical Center, Rochester, New York.,Division of Neonatology and Program in Pediatric Molecular and Personalized Medicine, University of Rochester Medical Center, Rochester, New York
| | - David Warburton
- Developmental Biology and Regenerative Medicine Program, Department of Pediatric Surgery, The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, California.,Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Thomas J Mariani
- Department of Pediatrics, University of Rochester Medical Center, Rochester, New York.,Division of Neonatology and Program in Pediatric Molecular and Personalized Medicine, University of Rochester Medical Center, Rochester, New York
| | - Gloria S Pryhuber
- Department of Pediatrics, University of Rochester Medical Center, Rochester, New York
| | - Jeffrey A Whitsett
- The Perinatal Institute and Section of Neonatology, Perinatal and Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Charles Ansong
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, Washington
| | - Yan Xu
- The Perinatal Institute and Section of Neonatology, Perinatal and Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| |
Collapse
|
32
|
Mahmoud M, Evans IM, Mehta V, Pellet-Many C, Paliashvili K, Zachary I. Smooth muscle cell-specific knockout of neuropilin-1 impairs postnatal lung development and pathological vascular smooth muscle cell accumulation. Am J Physiol Cell Physiol 2019; 316:C424-C433. [PMID: 30649916 PMCID: PMC6457104 DOI: 10.1152/ajpcell.00405.2018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Neuropilin 1 (NRP1) is important for neuronal and cardiovascular development due to its role in conveying class 3 semaphorin and vascular endothelial growth factor signaling, respectively. NRP1 is expressed in smooth muscle cells (SMCs) and mediates their migration and proliferation in cell culture and is implicated in pathological SMC remodeling in vivo. To address the importance of Nrp1 for SMC function during development, we generated conditional inducible Nrp1 SMC-specific knockout mice. Induction of early postnatal SMC-specific Nrp1 knockout led to pulmonary hemorrhage associated with defects in alveogenesis and revealed a specific requirement for Nrp1 in myofibroblast recruitment to the alveolar septae and PDGF-AA-induced migration in vitro. Furthermore, SMC-specific Nrp1 knockout inhibited PDGF-BB-stimulated SMC outgrowth ex vivo in aortic ring assays and reduced pathological arterial neointima formation in vivo. In contrast, we observed little significant effect of SMC-specific Nrp1 knockout on neonatal retinal vascularization. Our results point to a requirement of Nrp1 in vascular smooth muscle and myofibroblast function in vivo, which may have relevance for postnatal lung development and for pathologies characterized by excessive SMC and/or myofibroblast proliferation.
Collapse
Affiliation(s)
- Marwa Mahmoud
- Centre for Cardiovascular Biology and Medicine, BHF Laboratories, Division of Medicine, University College London , London , United Kingdom
| | - Ian M Evans
- Centre for Cardiovascular Biology and Medicine, BHF Laboratories, Division of Medicine, University College London , London , United Kingdom
| | - Vedanta Mehta
- Centre for Cardiovascular Biology and Medicine, BHF Laboratories, Division of Medicine, University College London , London , United Kingdom
| | - Caroline Pellet-Many
- Centre for Cardiovascular Biology and Medicine, BHF Laboratories, Division of Medicine, University College London , London , United Kingdom
| | - Ketevan Paliashvili
- Centre for Cardiovascular Biology and Medicine, BHF Laboratories, Division of Medicine, University College London , London , United Kingdom
| | - Ian Zachary
- Centre for Cardiovascular Biology and Medicine, BHF Laboratories, Division of Medicine, University College London , London , United Kingdom
| |
Collapse
|
33
|
Type VI collagen promotes lung epithelial cell spreading and wound-closure. PLoS One 2018; 13:e0209095. [PMID: 30550606 PMCID: PMC6294368 DOI: 10.1371/journal.pone.0209095] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 11/29/2018] [Indexed: 11/25/2022] Open
Abstract
Basement membrane (BM) is an essential part of the extracellular matrix (ECM) that plays a crucial role in mechanical support and signaling to epithelial cells during lung development, homeostasis and repair. Abnormal composition and remodeling of the lung ECM have been associated with developmental abnormalities observed in multiple pediatric and adult respiratory diseases. Collagen VI (COL6) is a well-studied muscle BM component, but its role in the lung and its effect on pulmonary epithelium is largely undetermined. We report the presence of COLVI immediately subjacent to human airway and alveolar epithelium in the pediatric lung, in a location where it is likely to interact with epithelial cells. In vitro, both primary human lung epithelial cells and human lung epithelial cell lines displayed an increased rate of “wound healing” in response to a scratch injury when plated on COL6 as compared to other matrices. For the 16HBE cell line, wounds remained >5-fold larger for cells on COL1 (p<0.001) and >6-fold larger on matrigel (p<0.001), a prototypical basement membrane, when compared to COL6 (>96% closure at 10 hr). The effect of COL6 upon lung epithelial cell phenotype was associated with an increase in cell spreading. Three hours after initial plating, 16HBE cells showed >7-fold less spreading on matrigel (p<0.01), and >4-fold less spreading on COL1 (p<0.01) when compared to COL6. Importantly, the addition of COL6 to other matrices also enhanced cell spreading. Similar responses were observed for primary cells. Inhibitor studies indicated both integrin β1 activity and activation of multiple signaling pathways was required for enhanced spreading on all matrices, with the PI3K/AKT pathway (PI3K, CDC42, RAC1) showing both significant and specific effects for spreading on COL6. Genetic gain-of-function experiments demonstrated enhanced PI3K/AKT pathway activity was sufficient to confer equivalent cell spreading on other matrices as compared to COL6. We conclude that COL6 has significant and specific effects upon human lung epithelial cell-autonomous functions.
Collapse
|
34
|
Chen Y, Feng J, Zhao S, Han L, Yang H, Lin Y, Rong Z. Long-Term Engraftment Promotes Differentiation of Alveolar Epithelial Cells from Human Embryonic Stem Cell Derived Lung Organoids. Stem Cells Dev 2018; 27:1339-1349. [PMID: 30009668 DOI: 10.1089/scd.2018.0042] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Human embryonic stem cell (hESC) derived 3D human lung organoids (HLOs) provide a promising model to study human lung development and disease. HLOs containing proximal or/and immature distal airway epithelial cells have been successfully generated in vitro, such as early staged alveolar type 2 (AT2) cells (SPC+/SOX9+) and immature alveolar type 1 (AT1) cells (HOPX+/SOX9+). When HLOs were transplanted into immunocompromised mice for further differentiation in vivo, only few distal epithelial cells could be observed. In this study, we transplanted different stages of HLOs into immunocompromised mice to assess whether HLOs could expand and mature in vivo. We found that short-term transplanted HLOs contained lung progenitor cells (NKX2.1+, SOX9+, and P63+), but not SPC+ AT2 cells or AQP5+ AT1 cells. Meanwhile, long-term engrafted HLOs could differentiate into lung distal bipotent progenitor cells (PDPN+/SPC+/SOX9+), AT2 cells (SPC+, SPB+), and immature AT1 cells (PDPN+, AQP5-). However, HLOs at late in vitro stage turned into mature AT1-like cells (AQP5+/SPB-/SOX9-) in vivo. Immunofluorescence staining and transmission electron microscopy (TEM) results revealed that transplanted HLOs contained mesenchymal cells (collagen I+), vasculature (ACTA2+), neuroendocrine-like cells (PGP9.5+), and nerve fiber structures (myelin sheath structure). Together, these data reveal that hESC-derived HLOs would be useful for human lung development modeling, and transplanted HLOs could mimic lung organ-like structures in vivo by possessing vascular network and neuronal network.
Collapse
Affiliation(s)
- Yong Chen
- Cancer Research Institute, School of Basic Medical Sciences, Southern Medical University , Guangzhou, China
| | - Jianqi Feng
- Cancer Research Institute, School of Basic Medical Sciences, Southern Medical University , Guangzhou, China
| | - Shanshan Zhao
- Cancer Research Institute, School of Basic Medical Sciences, Southern Medical University , Guangzhou, China
| | - Le Han
- Cancer Research Institute, School of Basic Medical Sciences, Southern Medical University , Guangzhou, China
| | - Hongcheng Yang
- Cancer Research Institute, School of Basic Medical Sciences, Southern Medical University , Guangzhou, China
| | - Ying Lin
- Cancer Research Institute, School of Basic Medical Sciences, Southern Medical University , Guangzhou, China
| | - Zhili Rong
- Cancer Research Institute, School of Basic Medical Sciences, Southern Medical University , Guangzhou, China
| |
Collapse
|
35
|
Spatial and temporal changes in extracellular elastin and laminin distribution during lung alveolar development. Sci Rep 2018; 8:8334. [PMID: 29844468 PMCID: PMC5974327 DOI: 10.1038/s41598-018-26673-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 05/17/2018] [Indexed: 12/14/2022] Open
Abstract
Lung alveolarization requires precise coordination of cell growth with extracellular matrix (ECM) synthesis and deposition. The role of extracellular matrices in alveogenesis is not fully understood, because prior knowledge is largely extrapolated from two-dimensional structural analysis. Herein, we studied temporospatial changes of two important ECM proteins, laminin and elastin that are tightly associated with alveolar capillary growth and lung elastic recoil respectively, during both mouse and human lung alveolarization. By combining protein immunofluorescence staining with two- and three-dimensional imaging, we found that the laminin network was simplified along with the thinning of septal walls during alveogenesis, and more tightly associated with alveolar endothelial cells in matured lung. In contrast, elastin fibers were initially localized to the saccular openings of nascent alveoli, forming a ring-like structure. Then, throughout alveolar growth, the number of such alveolar mouth ring-like structures increased, while the relative ring size decreased. These rings were interconnected via additional elastin fibers. The apparent patches and dots of elastin at the tips of alveolar septae found in two-dimensional images were cross sections of elastin ring fibers in the three-dimension. Thus, the previous concept that deposition of elastin at alveolar tips drives septal inward growth may potentially be conceptually challenged by our data.
Collapse
|
36
|
Dassios T, Dassios KG, Dassios G. Functional morphometry for the estimation of the alveolar surface area in prematurely-born infants. Respir Physiol Neurobiol 2018; 254:49-54. [PMID: 29719268 DOI: 10.1016/j.resp.2018.04.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 04/14/2018] [Accepted: 04/19/2018] [Indexed: 11/29/2022]
Abstract
Conventionally, the alveolar surface area (SA) has been measured by using post-mortem morphometry. Such studies have highlighted that SA in prematurely-born infants is markedly smaller when compared to term-born infants as a result of postnatal impairment or arrest of alveolar development. We herein explore how, non-invasive measurements of the ventilation/perfusion ratio (VA/Q) can be used to estimate SA in prematurely-born surviving, convalescent infants. We also compare SA in prematurely-born infants measured at term-corrected age, to term-born infants using previously published datasets of VA/Q. Fick's first law of diffusion is employed for the conversion of VA/Q measurements to SA values after correcting for differences in pulmonary perfusion, thickness of the respiratory membrane and alveolar-arterial gradient. We report that SA is fivefold smaller in prematurely-born compared to term-born infants. We conclude that non-invasive measurements of VA/Q can be used for the functional estimation of SA which could, in turn, be used as a future outcome measure in respiratory studies of prematurely-born infants.
Collapse
Affiliation(s)
- Theodore Dassios
- Neonatal Intensive Care Unit, King's College Hospital NHS Foundation Trust, London, United Kingdom; Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom.
| | | | - George Dassios
- Department of Chemical Engineering, University of Patras, Greece; Academy of Athens, Athens, Greece
| |
Collapse
|
37
|
Lee AG, Le Grand B, Hsu HHL, Chiu YHM, Brennan KJ, Bose S, Rosa MJ, Brunst KJ, Kloog I, Wilson A, Schwartz J, Morgan W, Coull BA, Wright RO, Baccarelli AA, Wright RJ. Prenatal fine particulate exposure associated with reduced childhood lung function and nasal epithelia GSTP1 hypermethylation: Sex-specific effects. Respir Res 2018; 19:76. [PMID: 29703190 PMCID: PMC5923186 DOI: 10.1186/s12931-018-0774-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 04/06/2018] [Indexed: 12/31/2022] Open
Abstract
Background In utero exposure to particulate matter with an aerodynamic diameter of less than 2.5 μm (PM2.5) has been linked to child lung function. Overlapping evidence suggests that child sex and exposure timing may modify effects and associations may be mediated through glutathione S-transferase P1 (GSTP1) methylation. Methods We prospectively examined associations among prenatal PM2.5 exposure and child lung function and GSTP1 methylation in an urban pregnancy cohort study. We employed a validated satellite-based spatiotemporally resolved prediction model to estimate daily prenatal PM2.5 exposure over gestation. We used Baysian distributed lag interaction models (BDLIMs) to identify sensitive windows for prenatal PM2.5 exposure on child lung function and nasal epithelia GSTP1 methylation at age 7 years, and to examine effect modification by child sex. Results BDLIMs identified a sensitive window for prenatal PM2.5 exposure at 35–40 weeks gestation [cumulative effect estimate (CEE) = − 0.10, 95%CI = − 0.19 to − 0.01, per μg/m3 increase in PM2.5] and at 36–40 weeks (CEE = − 0.12, 95%CI = − 0.20 to − 0.01) on FEV1 and FVC, respectively, in boys. BDLIMs also identified a sensitive window of exposure at 37–40 weeks gestation between higher prenatal PM2.5 exposure and increased GSTP1 percent methylation. The association between higher GSTP1 percent methylation and decreased FEV1 was borderline significant in the sample as a whole (β = − 0.37, SE = 0.20, p = 0.06) and in boys in stratified analyses (β = − 0.56, SE = 0.29, p = 0.05). Conclusions Prenatal PM2.5 exposure in late pregnancy was associated with impaired early childhood lung function and hypermethylation of GSTPI in DNA isolated from nasal epithelial cells. There was a trend towards higher GSTP1 percent methylation being associated with reduced FEV1. All findings were most evident among boys.
Collapse
Affiliation(s)
- Alison G Lee
- Division of Pulmonary, Critical Care and Sleep Medicine, Icahn School of Medicine at Mount Sinai, 1236 Park Avenue, First Floor, New York, NY, 10029, USA.
| | - Blake Le Grand
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Hsiao-Hsien Leon Hsu
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Department of Pediatrics, Kravis Children's Hospital, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Yueh-Hsiu Mathilda Chiu
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Department of Pediatrics, Kravis Children's Hospital, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Kasey J Brennan
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, New York, USA
| | - Sonali Bose
- Division of Pulmonary, Critical Care and Sleep Medicine, Icahn School of Medicine at Mount Sinai, 1236 Park Avenue, First Floor, New York, NY, 10029, USA
| | - Maria José Rosa
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Kelly J Brunst
- Department of Environmental Health, University of Cincinnati College of Medicine, 160 Panzeca Way, Cincinnati, OH, USA
| | - Itai Kloog
- Department of Geography and Environmental Development, Faculty of Humanities and Social Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ander Wilson
- Department of Statistics, Colorado State University, Fort Collins, CO, USA
| | - Joel Schwartz
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Wayne Morgan
- Department of Pediatrics, University of Arizona, Tucson, Arizona, USA
| | - Brent A Coull
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Robert O Wright
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Department of Pediatrics, Kravis Children's Hospital, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Andrea A Baccarelli
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, New York, USA
| | - Rosalind J Wright
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Department of Pediatrics, Kravis Children's Hospital, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| |
Collapse
|
38
|
Vaughan AE, Chapman HA. Failure of Alveolar Type 2 Cell Maintenance Links Neonatal Distress with Adult Lung Disease. Am J Respir Cell Mol Biol 2018; 56:415-416. [PMID: 28362148 DOI: 10.1165/rcmb.2016-0411ed] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Affiliation(s)
- Andrew E Vaughan
- 1 Department of Medicine and Cardiovascular Research Institute University of California-San Francisco San Francisco, California
| | - Harold A Chapman
- 1 Department of Medicine and Cardiovascular Research Institute University of California-San Francisco San Francisco, California
| |
Collapse
|
39
|
Pulmonary alveolar type I cell population consists of two distinct subtypes that differ in cell fate. Proc Natl Acad Sci U S A 2018; 115:2407-2412. [PMID: 29463737 PMCID: PMC5877944 DOI: 10.1073/pnas.1719474115] [Citation(s) in RCA: 135] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Pulmonary alveolar type I (AT1) cells are essential for the gas-exchange function of lungs. AT1 cells retain their cellular plasticity during injury-induced alveolar regeneration. However, we know very little about the developmental heterogeneity of the AT1 cell population. Our study identified a robust genetic marker of postnatal AT1 cells, insulin-like growth factor-binding protein 2 (Igfbp2). We use this marker to demonstrate that the postnatal AT1 cell population actually consists of two AT1 cell subtypes (Hopx+Igfbp2+ and Hopx+Igfbp2− AT1 cells) with distinct cell fates during alveolar regeneration. The large majority of adult AT1 cells expresses Igfbp2 and cannot transdifferentiate into AT2 cells during post pneumonectomy formation of new alveoli. Therefore, Hopx+Igfbp2+ AT1 cells represent the terminally differentiated population of AT1 cells. Pulmonary alveolar type I (AT1) cells cover more than 95% of alveolar surface and are essential for the air–blood barrier function of lungs. AT1 cells have been shown to retain developmental plasticity during alveolar regeneration. However, the development and heterogeneity of AT1 cells remain largely unknown. Here, we conducted a single-cell RNA-seq analysis to characterize postnatal AT1 cell development and identified insulin-like growth factor-binding protein 2 (Igfbp2) as a genetic marker specifically expressed in postnatal AT1 cells. The portion of AT1 cells expressing Igfbp2 increases during alveologenesis and in post pneumonectomy (PNX) newly formed alveoli. We found that the adult AT1 cell population contains both Hopx+Igfbp2+ and Hopx+Igfbp2− AT1 cells, which have distinct cell fates during alveolar regeneration. Using an Igfbp2-CreER mouse model, we demonstrate that Hopx+Igfbp2+ AT1 cells represent terminally differentiated AT1 cells that are not able to transdifferentiate into AT2 cells during post-PNX alveolar regeneration. Our study provides tools and insights that will guide future investigations into the molecular and cellular mechanism or mechanisms underlying AT1 cell fate during lung development and regeneration.
Collapse
|
40
|
Dravet-Gounot P, Morin C, Jacques S, Dumont F, Ely-Marius F, Vaiman D, Jarreau PH, Méhats C, Zana-Taïeb E. Lung microRNA deregulation associated with impaired alveolarization in rats after intrauterine growth restriction. PLoS One 2017; 12:e0190445. [PMID: 29287116 PMCID: PMC5747455 DOI: 10.1371/journal.pone.0190445] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 12/14/2017] [Indexed: 12/14/2022] Open
Abstract
Intrauterine growth restriction (IUGR) was recently described as an independent risk factor of bronchopulmonary dysplasia, the main respiratory sequelae of preterm birth. We previously showed impaired alveolarization in rat pups born with IUGR induced by a low-protein diet (LPD) during gestation. We conducted a genome-wide analysis of gene expression and found the involvement of several pathways such as cell adhesion. Here, we describe our unbiased microRNA (miRNA) profiling by microarray assay and validation by qPCR at postnatal days 10 and 21 (P10 and P21) in lungs of rat pups with LPD-induced lung-alveolarization disorder after IUGR. We identified 13 miRNAs with more than two-fold differential expression between control lungs and LPD-induced IUGR lungs. Validated and predicted target genes of these miRNAs were related to “tissue repair” at P10 and “cellular communication regulation” at P21. We predicted the deregulation of several genes associated with these pathways. Especially, E2F3, a transcription factor involved in cell cycle control, was expressed in developing alveoli, and its mRNA and protein levels were significantly increased at P21 after IUGR. Hence, IUGR affects the expression of selected miRNAs during lung alveolarization. These results provide a basis for deciphering the mechanistic contributions of IUGR to impaired alveolarization.
Collapse
Affiliation(s)
- Pauline Dravet-Gounot
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Faculté de Médecine, Paris, France
- AP-HP, Maternité Port Royal, Service de Médecine et Réanimation Néonatales, Paris, France
- DHU Risques et grossesse, Maternité Port-Royal, Paris, France
| | - Cécile Morin
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Faculté de Médecine, Paris, France
- DHU Risques et grossesse, Maternité Port-Royal, Paris, France
| | - Sébastien Jacques
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Faculté de Médecine, Paris, France
| | - Florent Dumont
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Faculté de Médecine, Paris, France
| | - Fabiola Ely-Marius
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Faculté de Médecine, Paris, France
| | - Daniel Vaiman
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Faculté de Médecine, Paris, France
- DHU Risques et grossesse, Maternité Port-Royal, Paris, France
| | - Pierre-Henri Jarreau
- Université Paris Descartes, Faculté de Médecine, Paris, France
- AP-HP, Maternité Port Royal, Service de Médecine et Réanimation Néonatales, Paris, France
- DHU Risques et grossesse, Maternité Port-Royal, Paris, France
- Inserm U1141, Paris, France
- Premup, Paris, France
| | - Céline Méhats
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Faculté de Médecine, Paris, France
- DHU Risques et grossesse, Maternité Port-Royal, Paris, France
- * E-mail:
| | - Elodie Zana-Taïeb
- Université Paris Descartes, Faculté de Médecine, Paris, France
- AP-HP, Maternité Port Royal, Service de Médecine et Réanimation Néonatales, Paris, France
- DHU Risques et grossesse, Maternité Port-Royal, Paris, France
- Inserm U1141, Paris, France
- Premup, Paris, France
| |
Collapse
|
41
|
Haak AJ, Tan Q, Tschumperlin DJ. Matrix biomechanics and dynamics in pulmonary fibrosis. Matrix Biol 2017; 73:64-76. [PMID: 29274939 DOI: 10.1016/j.matbio.2017.12.004] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 11/09/2017] [Accepted: 12/12/2017] [Indexed: 12/13/2022]
Abstract
The composition and mechanical properties of the extracellular matrix are dramatically altered during the development and progression of pulmonary fibrosis. Recent evidence indicates that these changes in matrix composition and mechanics are not only end-results of fibrotic remodeling, but active participants in driving disease progression. These insights have stimulated interest in identifying the components and physical aspects of the matrix that contribute to cell activation and disease initiation and progression. This review summarizes current knowledge regarding the biomechanics and dynamics of the ECM in mouse models and human IPF, and discusses how matrix mechanical and compositional changes might be non-invasively assessed, therapeutically targeted, and biologically restored to resolve fibrosis.
Collapse
Affiliation(s)
- Andrew J Haak
- Department of Physiology and Biomedical Engineering, Mayo Clinic, 200 First St SW, Rochester, MN 55905, United States
| | - Qi Tan
- Department of Physiology and Biomedical Engineering, Mayo Clinic, 200 First St SW, Rochester, MN 55905, United States
| | - Daniel J Tschumperlin
- Department of Physiology and Biomedical Engineering, Mayo Clinic, 200 First St SW, Rochester, MN 55905, United States.
| |
Collapse
|
42
|
Emergence of a Wave of Wnt Signaling that Regulates Lung Alveologenesis by Controlling Epithelial Self-Renewal and Differentiation. Cell Rep 2017; 17:2312-2325. [PMID: 27880906 DOI: 10.1016/j.celrep.2016.11.001] [Citation(s) in RCA: 190] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 09/13/2016] [Accepted: 10/25/2016] [Indexed: 01/03/2023] Open
Abstract
Alveologenesis is the culmination of lung development and involves the correct temporal and spatial signals to generate the delicate gas exchange interface required for respiration. Using a Wnt-signaling reporter system, we demonstrate the emergence of a Wnt-responsive alveolar epithelial cell sublineage, which arises during alveologenesis, called the axin2+ alveolar type 2 cell, or AT2Axin2. The number of AT2Axin2 cells increases substantially during late lung development, correlating with a wave of Wnt signaling during alveologenesis. Transcriptome analysis, in vivo clonal analysis, and ex vivo lung organoid assays reveal that AT2sAxin2 promote enhanced AT2 cell growth during generation of the alveolus. Activating Wnt signaling results in the expansion of AT2s, whereas inhibition of Wnt signaling inhibits AT2 cell development and shunts alveolar epithelial development toward the alveolar type 1 cell lineage. These findings reveal a wave of Wnt-dependent AT2 expansion required for lung alveologenesis and maturation.
Collapse
|
43
|
Costain G, Moore AM, Munroe L, Williams A, Zlotnik Shaul R, Rockman-Greenberg C, Offringa M, Kannu P. Enzyme replacement therapy in perinatal hypophosphatasia: Case report of a negative outcome and lessons for clinical practice. Mol Genet Metab Rep 2017; 14:22-26. [PMID: 29159075 PMCID: PMC5681336 DOI: 10.1016/j.ymgmr.2017.10.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 10/20/2017] [Accepted: 10/21/2017] [Indexed: 12/03/2022] Open
Abstract
Enzyme replacement therapy (ERT) is a newly approved disease-modifying treatment for hypophosphatasia (HPP), a rare metabolic bone disorder. With an orphan drug and ultra-rare disease, sharing information about responders and non-responders is particularly important, as any one centre's familiarity with its use will be limited. Nearly all published data in infants and very young children with life-threatening HPP are from three small clinical trials that have reported generally positive outcomes. We describe in detail a patient with perinatal HPP for whom treatment with ERT was not successful. Lessons learned from this case can inform clinical decision-making and provide topics for the research agenda. We also discuss practical and ethical challenges related to treatment of an ultra-rare disease with an expensive new medication in a publicly funded healthcare system.
Collapse
Affiliation(s)
- Gregory Costain
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, Toronto, ON, Canada.,Medical Genetics Residency Training Program, University of Toronto, Toronto, ON, Canada
| | - Aideen M Moore
- Division of Neonatology, The Hospital for Sick Children, Toronto, ON, Canada.,Department of Paediatrics, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Lauren Munroe
- Division of Neonatology, The Hospital for Sick Children, Toronto, ON, Canada
| | - Alison Williams
- Department of Bioethics, The Hospital for Sick Children, University of Toronto Joint Centre for Bioethics, Toronto, ON, Canada
| | - Randi Zlotnik Shaul
- Department of Paediatrics, Faculty of Medicine, University of Toronto, Toronto, ON, Canada.,Department of Bioethics, The Hospital for Sick Children, University of Toronto Joint Centre for Bioethics, Toronto, ON, Canada.,Child Health Evaluative Sciences, The Hospital for Sick Children, Toronto, ON, Canada
| | - Cheryl Rockman-Greenberg
- Children's Hospital Research Institute of Manitoba, Department of Paediatrics and Child Health, University of Manitoba, Winnipeg, MB, Canada
| | - Martin Offringa
- Division of Neonatology, The Hospital for Sick Children, Toronto, ON, Canada.,Department of Paediatrics, Faculty of Medicine, University of Toronto, Toronto, ON, Canada.,Child Health Evaluative Sciences, The Hospital for Sick Children, Toronto, ON, Canada
| | - Peter Kannu
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, Toronto, ON, Canada.,Institute of Medical Science, University of Toronto, Toronto, ON, Canada
| |
Collapse
|
44
|
Alvira CM, Morty RE. Can We Understand the Pathobiology of Bronchopulmonary Dysplasia? J Pediatr 2017; 190:27-37. [PMID: 29144252 PMCID: PMC5726414 DOI: 10.1016/j.jpeds.2017.08.041] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 07/28/2017] [Accepted: 08/16/2017] [Indexed: 01/17/2023]
Affiliation(s)
- Cristina M. Alvira
- Center for Excellence in Pulmonary Biology, Department of Pediatrics, Stanford University School of Medicine, Palo Alto, California 94305
| | - Rory E. Morty
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center campus of the German Center for Lung Research, Giessen, Germany,Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| |
Collapse
|
45
|
Li H, Karmouty-Quintana H, Chen NY, Mills T, Molina J, Blackburn MR, Davies J. Loss of CD73-mediated extracellular adenosine production exacerbates inflammation and abnormal alveolar development in newborn mice exposed to prolonged hyperoxia. Pediatr Res 2017; 82:pr2017176. [PMID: 28832580 DOI: 10.1038/pr.2017.176] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 06/20/2017] [Indexed: 12/15/2022]
Abstract
BackgroundHyperoxic lung injury is characterized by cellular damage from high oxygen concentrations that lead to an inflammatory response and it disrupts normal alveolarization in the developing newborn lung. Adenosine is a signaling molecule that is generated extracellularly by ecto-5'-nucleotidase (CD73) in response to injury. Extracellular adenosine signals through cell surface receptors and has been found to have a protective role in acute injury situations; however, chronic elevations have been associated with detrimental changes in chronic lung diseases. We hypothesized that hyperoxia-induced lung injury leads to CD73-mediated increases in extracellular adenosine, which are detrimental to the newborn lung.MethodsC57Bl/6 and CD73-/- mice were exposed to 95% oxygen, 70% oxygen, or room air. Adenosine concentration and markers of pulmonary inflammation and lung development were measured.ResultsExposure to hyperoxia caused pulmonary inflammation and disrupted normal alveolar development in association with increased pulmonary adenosine levels. Loss of CD73-mediated extracellular adenosine production led to decreased survival with exposure to 95% oxygen, and exacerbated pulmonary inflammation and worsened lung development with 70% oxygen exposure.ConclusionExposure to hyperoxia causes lung injury associated with an increase in adenosine concentration, and loss of CD73-mediated adenosine production leads to worsening of hyperoxic lung injury.Pediatric Research advance online publication, 23 August 2017; doi:10.1038/pr.2017.176.
Collapse
Affiliation(s)
- Huiling Li
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Baylor College of Medicine, Houston, Texas
| | - Harry Karmouty-Quintana
- Department of Biochemistry and Molecular Biology, The University of Texas-Houston Medical School, Houston, Texas
| | - Ning-Yuan Chen
- Department of Biochemistry and Molecular Biology, The University of Texas-Houston Medical School, Houston, Texas
| | - Tingting Mills
- Department of Biochemistry and Molecular Biology, The University of Texas-Houston Medical School, Houston, Texas
| | - Jose Molina
- Department of Biochemistry and Molecular Biology, The University of Texas-Houston Medical School, Houston, Texas
| | - Michael R Blackburn
- Department of Biochemistry and Molecular Biology, The University of Texas-Houston Medical School, Houston, Texas
| | - Jonathan Davies
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Baylor College of Medicine, Houston, Texas
| |
Collapse
|
46
|
Funke M, Knudsen L, Lagares D, Ebener S, Probst CK, Fontaine BA, Franklin A, Kellner M, Kühnel M, Matthieu S, Grothausmann R, Chun J, Roberts JD, Ochs M, Tager AM. Lysophosphatidic Acid Signaling through the Lysophosphatidic Acid-1 Receptor Is Required for Alveolarization. Am J Respir Cell Mol Biol 2017; 55:105-16. [PMID: 27082727 DOI: 10.1165/rcmb.2015-0152oc] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Lysophosphatidic acid (LPA) signaling through one of its receptors, LPA1, contributes to both the development and the pathological remodeling after injury of many organs. Because we found previously that LPA-LPA1 signaling contributes to pulmonary fibrosis, here we investigated whether this pathway is also involved in lung development. Quantitative assessment of lung architecture of LPA1-deficient knock-out (KO) and wild-type (WT) mice at 3, 12, and 24 weeks of age using design-based stereology suggested the presence of an alveolarization defect in LPA1 KO mice at 3 weeks, which persisted as alveolar numbers increased in WT mice into adulthood. Across the ages examined, the lungs of LPA1 KO mice exhibited decreased alveolar numbers, septal tissue volumes, and surface areas, and increased volumes of the distal airspaces. Elastic fibers, critical to the development of alveolar septa, appeared less organized and condensed and more discontinuous in KO alveoli starting at P4. Tropoelastin messenger RNA expression was decreased in KO lungs, whereas expression of matrix metalloproteinases degrading elastic fibers was either decreased or unchanged. These results are consistent with the abnormal lung phenotype of LPA1 KO mice, being attributable to reduced alveolar septal formation during development, rather than to increased septal destruction as occurs in the emphysema of chronic obstructive pulmonary disease. Peripheral septal fibroblasts and myofibroblasts, which direct septation in late alveolarization, demonstrated reduced production of tropoelastin and matrix metalloproteinases, and diminished LPA-induced migration, when isolated from LPA1 KO mice. Taken together, our data suggest that LPA-LPA1 signaling is critically required for septation during alveolarization.
Collapse
Affiliation(s)
- Manuela Funke
- 1 Departments of Pulmonary Medicine, Inselspital Berne, and.,2 Clinical Research, University of Berne, Berne, Switzerland.,3 Division of Pulmonary and Critical Care Medicine and Center for Immunology and Inflammatory Diseases, and
| | - Lars Knudsen
- 4 Institute of Functional and Applied Anatomy, Hannover Medical School, and Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), German Center for Lung Research, REBIRTH Cluster of Excellence, Hannover, Germany; and
| | - David Lagares
- 3 Division of Pulmonary and Critical Care Medicine and Center for Immunology and Inflammatory Diseases, and
| | - Simone Ebener
- 1 Departments of Pulmonary Medicine, Inselspital Berne, and.,2 Clinical Research, University of Berne, Berne, Switzerland
| | - Clemens K Probst
- 3 Division of Pulmonary and Critical Care Medicine and Center for Immunology and Inflammatory Diseases, and
| | - Benjamin A Fontaine
- 3 Division of Pulmonary and Critical Care Medicine and Center for Immunology and Inflammatory Diseases, and
| | - Alicia Franklin
- 3 Division of Pulmonary and Critical Care Medicine and Center for Immunology and Inflammatory Diseases, and
| | - Manuela Kellner
- 4 Institute of Functional and Applied Anatomy, Hannover Medical School, and Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), German Center for Lung Research, REBIRTH Cluster of Excellence, Hannover, Germany; and
| | - Mark Kühnel
- 4 Institute of Functional and Applied Anatomy, Hannover Medical School, and Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), German Center for Lung Research, REBIRTH Cluster of Excellence, Hannover, Germany; and
| | - Stephanie Matthieu
- 4 Institute of Functional and Applied Anatomy, Hannover Medical School, and Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), German Center for Lung Research, REBIRTH Cluster of Excellence, Hannover, Germany; and
| | - Roman Grothausmann
- 4 Institute of Functional and Applied Anatomy, Hannover Medical School, and Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), German Center for Lung Research, REBIRTH Cluster of Excellence, Hannover, Germany; and
| | - Jerold Chun
- 5 Department of Molecular and Cellular Neuroscience, Dorris Neuroscience Center, Scripps Research Institute, La Jolla, California
| | - Jesse D Roberts
- 6 Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Matthias Ochs
- 4 Institute of Functional and Applied Anatomy, Hannover Medical School, and Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), German Center for Lung Research, REBIRTH Cluster of Excellence, Hannover, Germany; and
| | - Andrew M Tager
- 3 Division of Pulmonary and Critical Care Medicine and Center for Immunology and Inflammatory Diseases, and
| |
Collapse
|
47
|
Sun M, Ramchandran R, Chen J, Yang Q, Raj JU. Smooth Muscle Insulin-Like Growth Factor-1 Mediates Hypoxia-Induced Pulmonary Hypertension in Neonatal Mice. Am J Respir Cell Mol Biol 2017; 55:779-791. [PMID: 27438786 DOI: 10.1165/rcmb.2015-0388oc] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Insulin-like growth factor (IGF)-1 is a potent mitogen of vascular smooth muscle cells (SMCs), but its role in pulmonary vascular remodeling associated with pulmonary hypertension (PH) is not clear. In an earlier study, we implicated IGF-1 in the pathogenesis of hypoxia-induced PH in neonatal mice. In this study, we hypothesized that hypoxia-induced up-regulation of IGF-1 in vascular smooth muscle is directly responsible for pulmonary vascular remodeling and PH. We studied neonatal and adult mice with smooth muscle-specific deletion of IGF-1 and also used an inhibitor of IGF-1 receptor (IGF-1R), OSI-906, in neonatal mice. We found that, in neonatal mice, SMC-specific deletion of IGF-1 or IGF-1R inhibition with OSI-906 attenuated hypoxia-induced pulmonary vascular remodeling in small arteries, right ventricular hypertrophy, and right ventricular systolic pressure. Pulmonary arterial SMCs from IGF-1-deleted mice or after OSI-906 treatment exhibited reduced proliferative potential. However, in adult mice, smooth muscle-specific deletion of IGF-1 had no effect on hypoxia-induced PH. Our data suggest that vascular smooth muscle-derived IGF-1 plays a critical role in hypoxia-induced PH in neonatal mice but not in adult mice. We speculate that the IGF-1/IGF-1R axis is important in pathogenesis of PH in the developing lung and may be amenable to therapeutic manipulation in this age group.
Collapse
Affiliation(s)
| | | | - Jiwang Chen
- 2 Section of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine, University of Illinois College of Medicine, and
| | | | - J Usha Raj
- 1 Department of Pediatrics.,3 Children's Hospital, University of Illinois, Chicago, Illinois
| |
Collapse
|
48
|
Lu HY, Chen XQ, Tang W, Wang QX, Zhang J. GRP78 silencing enhances hyperoxia-induced alveolar epithelial cell apoptosis via CHOP pathway. Mol Med Rep 2017; 16:1493-1501. [DOI: 10.3892/mmr.2017.6681] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2016] [Accepted: 05/26/2017] [Indexed: 11/06/2022] Open
|
49
|
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.
Collapse
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
| |
Collapse
|
50
|
Hassan W, Viebahn C. A correlative study of the allantois in pig and rabbit highlighting the diversity of extraembryonic tissues in four mammalian species, including mouse and man. J Morphol 2017; 278:600-620. [PMID: 28165148 DOI: 10.1002/jmor.20657] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 12/30/2016] [Accepted: 01/04/2017] [Indexed: 12/25/2022]
Abstract
Despite its conserved role in placenta and umbilical cord formation, the mammalian allantois shows remarkable diversity in size and form as well as in the timing of its appearance and attachment to the chorion. In the mouse, the common allantoic diverticulum is lacking; instead, the allantoic core domain is defined as a progenitor center for allantoic development. In this study, the allantoises of the pig and the rabbit as two nonrodent mammals of increasing significance in biomedical research are compared (1) morphologically using high resolution light and electron microscopy and (2) molecularly using brachyury mRNA expression as a mesodermal marker. Multiple small allantoic diverticula in the rabbit contrast with a single large cavity filling the entire allantois of the pig, but neither pig nor rabbit allantois expresses brachyury. The mesothelium on the allantois surface shows regional variability of cell contacts and microvilli, while blood vessels appear randomly around the allantoic diverticula in a mesodermal layer of variable thickness. Primordial germ cell-like cells are found in the allantois of the pig but not of the rabbit. To understand further the relevance of this developmental and morphological diversity, we compare the allantois development of pig and rabbit with early developmental landmarks of mouse and man. Our findings suggest that (1) tissue interaction between endoderm and mesoderm is important for allantoic development and vascular differentiation in species with a rudimentary allantoic diverticulum, (2) allantoic mesothelium plays a specific role in chorioallantoic attachment, allantoic differentiation and vascularization, and (3) there is a pronounced diversity in the extraembryonic migratory pathways of primordial germ cells among mammals. Finally, the phylogenetically basal characteristics of the pig allantois are suggestive of a functional similarity in mammals with a large allantois before placentation and in (aplacental) sauropsids with a chorioallantoic membrane well-adjusted to material exchange function.
Collapse
Affiliation(s)
- Waad Hassan
- Institute of Anatomy and Embryology, University Medical Center Göttingen, Göttingen, Germany
| | - Christoph Viebahn
- Institute of Anatomy and Embryology, University Medical Center Göttingen, Göttingen, Germany
| |
Collapse
|