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Goodwin AT, John AE, Joseph C, Habgood A, Tatler AL, Susztak K, Palmer M, Offermanns S, Henderson NC, Jenkins RG. Stretch regulates alveologenesis and homeostasis via mesenchymal Gαq/11-mediated TGFβ2 activation. Development 2023; 150:dev201046. [PMID: 37102682 PMCID: PMC10259661 DOI: 10.1242/dev.201046] [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: 07/04/2022] [Accepted: 04/05/2023] [Indexed: 04/28/2023]
Abstract
Alveolar development and repair require tight spatiotemporal regulation of numerous signalling pathways that are influenced by chemical and mechanical stimuli. Mesenchymal cells play key roles in numerous developmental processes. Transforming growth factor-β (TGFβ) is essential for alveologenesis and lung repair, and the G protein α subunits Gαq and Gα11 (Gαq/11) transmit mechanical and chemical signals to activate TGFβ in epithelial cells. To understand the role of mesenchymal Gαq/11 in lung development, we generated constitutive (Pdgfrb-Cre+/-;Gnaqfl/fl;Gna11-/-) and inducible (Pdgfrb-Cre/ERT2+/-;Gnaqfl/fl;Gna11-/-) mesenchymal Gαq/11 deleted mice. Mice with constitutive Gαq/11 gene deletion exhibited abnormal alveolar development, with suppressed myofibroblast differentiation, altered mesenchymal cell synthetic function, and reduced lung TGFβ2 deposition, as well as kidney abnormalities. Tamoxifen-induced mesenchymal Gαq/11 gene deletion in adult mice resulted in emphysema associated with reduced TGFβ2 and elastin deposition. Cyclical mechanical stretch-induced TGFβ activation required Gαq/11 signalling and serine protease activity, but was independent of integrins, suggesting an isoform-specific role for TGFβ2 in this model. These data highlight a previously undescribed mechanism of cyclical stretch-induced Gαq/11-dependent TGFβ2 signalling in mesenchymal cells, which is imperative for normal alveologenesis and maintenance of lung homeostasis.
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Affiliation(s)
- Amanda T. Goodwin
- Centre for Respiratory Research, Translational Medical Sciences, School of Medicine, University of Nottingham, Nottingham, NG7 2RD, UK
- Respiratory Medicine, Nottingham NIHR Biomedical Research Centre, Nottingham, NG7 2RD, UK
- Respiratory Medicine, Biodiscovery Institute, University Park, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Alison E. John
- Margaret Turner Warwick Centre for Fibrosing Lung Disease, National Heart and Lung Institute, Imperial College London, London, SW3 6LY, UK
| | - Chitra Joseph
- Centre for Respiratory Research, Translational Medical Sciences, School of Medicine, University of Nottingham, Nottingham, NG7 2RD, UK
- Respiratory Medicine, Nottingham NIHR Biomedical Research Centre, Nottingham, NG7 2RD, UK
- Respiratory Medicine, Biodiscovery Institute, University Park, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Anthony Habgood
- Centre for Respiratory Research, Translational Medical Sciences, School of Medicine, University of Nottingham, Nottingham, NG7 2RD, UK
- Respiratory Medicine, Nottingham NIHR Biomedical Research Centre, Nottingham, NG7 2RD, UK
- Respiratory Medicine, Biodiscovery Institute, University Park, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Amanda L. Tatler
- Centre for Respiratory Research, Translational Medical Sciences, School of Medicine, University of Nottingham, Nottingham, NG7 2RD, UK
- Respiratory Medicine, Nottingham NIHR Biomedical Research Centre, Nottingham, NG7 2RD, UK
- Respiratory Medicine, Biodiscovery Institute, University Park, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Katalin Susztak
- Department of Medicine, Division of Nephrology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Matthew Palmer
- Department of Pathology, Division of Nephrology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104-4238, USA
| | - Stefan Offermanns
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
| | - Neil C. Henderson
- Centre for Inflammation Research, University of Edinburgh, EH16 4TJ, UK
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, EH4 2XU, UK
| | - R. Gisli Jenkins
- Margaret Turner Warwick Centre for Fibrosing Lung Disease, National Heart and Lung Institute, Imperial College London, London, SW3 6LY, UK
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2
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Yie TA, Loomis CA, Nowatzky J, Khodadadi-Jamayran A, Lin Z, Cammer M, Barnett C, Mezzano V, Alu M, Novick JA, Munger JS, Kugler MC. Hedgehog and Platelet-derived Growth Factor Signaling Intersect during Postnatal Lung Development. Am J Respir Cell Mol Biol 2023; 68:523-536. [PMID: 36693140 PMCID: PMC10174164 DOI: 10.1165/rcmb.2022-0269oc] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 01/24/2023] [Indexed: 01/26/2023] Open
Abstract
Normal lung development critically depends on HH (Hedgehog) and PDGF (platelet-derived growth factor) signaling, which coordinate mesenchymal differentiation and proliferation. PDGF signaling is required for postnatal alveolar septum formation by myofibroblasts. Recently, we demonstrated a requirement for HH in postnatal lung development involving alveolar myofibroblast differentiation. Given shared features of HH signaling and PDGF signaling and their impact on this key cell type, we sought to clarify their relationship during murine postnatal lung development. Timed experiments revealed that HH inhibition phenocopies the key lung myofibroblast phenotypes of Pdgfa (platelet-derived growth factor subunit A) and Pdgfra (platelet-derived growth factor receptor alpha) knockouts during secondary alveolar septation. Using a dual signaling reporter, Gli1lZ;PdgfraEGFP, we show that HH and PDGF pathway intermediates are concurrently expressed during alveolar septal myofibroblast accumulation, suggesting pathway convergence in the generation of lung myofibroblasts. Consistent with this hypothesis, HH inhibition reduces Pdgfra expression and diminishes the number of Pdgfra-positive and Pdgfra-lineage cells in postnatal lungs. Bulk RNA sequencing data of Pdgfra-expressing cells from Postnatal Day 8 (P8) lungs show that HH inhibition alters the expression not only of well-established HH targets but also of several putative PDGF target genes. This, together with the presence of Gli-binding sites in PDGF target genes, suggests HH input into PDGF signaling. We identified these HH/PDGF targets in several postnatal lung mesenchymal cell populations, including myofibroblasts, using single-cell transcriptomic analysis. Collectively, our data indicate that HH signaling and PDGF signaling intersect to support myofibroblast/fibroblast function during secondary alveolar septum formation. Moreover, they provide a molecular foundation relevant to perinatal lung diseases associated with impaired alveolarization.
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Affiliation(s)
- Ting-An Yie
- Division of Pulmonary, Critical Care and Sleep Medicine and
| | | | - Johannes Nowatzky
- Division of Rheumatology, Department of Medicine
- Department of Pathology
| | | | | | | | - Clea Barnett
- Division of Pulmonary, Critical Care and Sleep Medicine and
| | | | | | | | - John S. Munger
- Division of Pulmonary, Critical Care and Sleep Medicine and
- Department of Cell Biology, School of Medicine and Langone Medical Center, New York University, New York, New York
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3
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Xia S, Vila Ellis L, Winkley K, Menden H, Mabry SM, Venkatraman A, Louiselle D, Gibson M, Grundberg E, Chen J, Sampath V. Neonatal hyperoxia induces activated pulmonary cellular states and sex-dependent transcriptomic changes in a model of experimental bronchopulmonary dysplasia. Am J Physiol Lung Cell Mol Physiol 2023; 324:L123-L140. [PMID: 36537711 PMCID: PMC9902224 DOI: 10.1152/ajplung.00252.2022] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 11/08/2022] [Accepted: 11/17/2022] [Indexed: 12/24/2022] Open
Abstract
Hyperoxia disrupts lung development in mice and causes bronchopulmonary dysplasia (BPD) in neonates. To investigate sex-dependent molecular and cellular programming involved in hyperoxia, we surveyed the mouse lung using single cell RNA sequencing (scRNA-seq), and validated our findings in human neonatal lung cells in vitro. Hyperoxia-induced inflammation in alveolar type (AT) 2 cells gave rise to damage-associated transient progenitors (DATPs). It also induced a new subpopulation of AT1 cells with reduced expression of growth factors normally secreted by AT1 cells, but increased mitochondrial gene expression. Female alveolar epithelial cells had less EMT and pulmonary fibrosis signaling in hyperoxia. In the endothelium, expansion of Car4+ EC (Cap2) was seen in hyperoxia along with an emergent subpopulation of Cap2 with repressed VEGF signaling. This regenerative response was increased in females exposed to hyperoxia. Mesenchymal cells had inflammatory signatures in hyperoxia, with a new distal interstitial fibroblast subcluster characterized by repressed lipid biosynthesis and a transcriptomic signature resembling myofibroblasts. Hyperoxia-induced gene expression signatures in human neonatal fibroblasts and alveolar epithelial cells in vitro resembled mouse scRNA-seq data. These findings suggest that neonatal exposure to hyperoxia programs distinct sex-specific stem cell progenitor and cellular reparative responses that underpin lung remodeling in BPD.
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Affiliation(s)
- Sheng Xia
- Department of Pediatrics, Children's Mercy Hospital, Kansas City, Missouri
| | - Lisandra Vila Ellis
- Department of Pulmonary Medicine, University of Texas M. D. Anderson Cancer Center, Houston, Texas
| | - Konner Winkley
- Genomic Medicine Center, Children's Mercy Hospital, Kansas City, Missouri
| | - Heather Menden
- Department of Pediatrics, Children's Mercy Hospital, Kansas City, Missouri
| | - Sherry M Mabry
- Department of Pediatrics, Children's Mercy Hospital, Kansas City, Missouri
| | - Aparna Venkatraman
- Department of Pediatrics, Children's Mercy Hospital, Kansas City, Missouri
| | - Daniel Louiselle
- Genomic Medicine Center, Children's Mercy Hospital, Kansas City, Missouri
| | - Margaret Gibson
- Genomic Medicine Center, Children's Mercy Hospital, Kansas City, Missouri
| | - Elin Grundberg
- Genomic Medicine Center, Children's Mercy Hospital, Kansas City, Missouri
- Children's Mercy Research Institute, Kansas City, Missouri
| | - Jichao Chen
- Department of Pulmonary Medicine, University of Texas M. D. Anderson Cancer Center, Houston, Texas
| | - Venkatesh Sampath
- Department of Pediatrics, Children's Mercy Hospital, Kansas City, Missouri
- Children's Mercy Research Institute, Kansas City, Missouri
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4
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Snitow ME, Chaudhry FN, Zepp JA. Engineering and Modeling the Lung Mesenchyme. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1413:139-154. [PMID: 37195530 DOI: 10.1007/978-3-031-26625-6_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
The structure of the mammalian lung controls the flow of air through the airways and into the distal alveolar region where gas exchange occurs. Specialized cells in the lung mesenchyme produce the extracellular matrix (ECM) and growth factors required for lung structure. Historically, characterizing the mesenchymal cell subtypes was challenging due to their ambiguous morphology, overlapping expression of protein markers, and limited cell-surface molecules needed for isolation. The recent development of single-cell RNA sequencing (scRNA-seq) complemented with genetic mouse models demonstrated that the lung mesenchyme comprises transcriptionally and functionally heterogeneous cell-types. Bioengineering approaches that model tissue structure clarify the function and regulation of mesenchymal cell types. These experimental approaches demonstrate the unique abilities of fibroblasts in mechanosignaling, mechanical force generation, ECM production, and tissue regeneration. This chapter will review the cell biology of the lung mesenchyme and experimental approaches to study their function.
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Affiliation(s)
- Melinda E Snitow
- Division of Pulmonary and Sleep Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Fatima N Chaudhry
- Division of Pulmonary and Sleep Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Jarod A Zepp
- Division of Pulmonary and Sleep Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA.
- Department of Pediatrics, University of Pennsylvania, Philadelphia, PA, USA.
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5
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Hu J, Wu Z, Wang H, Geng H, Huo J, Zhu X, Zhu X. Vitamin D Ameliorates Apoptosis and Inflammation by Targeting the Mitochondrial and MEK1/2-ERK1/2 Pathways in Hyperoxia-Induced Bronchopulmonary Dysplasia. J Inflamm Res 2022; 15:4891-4906. [PMID: 36046664 PMCID: PMC9423049 DOI: 10.2147/jir.s371906] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 08/16/2022] [Indexed: 12/11/2022] Open
Abstract
Purpose Bronchopulmonary dysplasia (BPD) is a common and severe complication in preterm infants. Vitamin D (VitD) has been reported to protect against BPD; however, its role in the mitochondria-mediated and MEK1/2-ERK1/2 pathways has not yet been reported. Methods We first performed in vivo studies using neonatal C57BL/6 mice in which we induced BPD by exposing them to a hyperoxic environment (85% O2). The mice were divided into room air (RA; 21% O2), RA+VitD, BPD, and BPD+VitD groups. Hematoxylin and eosin and Masson’s trichrome staining were used to evaluate lung injury. Inflammation and apoptosis were measured using ELISA, RT-qPCR, and TUNEL assays. We then analyzed BEAS-2B cells divided into the same groups along with an additional BPD+VitD+inhibitor group. Mitochondrial apoptosis was evaluated by transmission electron microscopy, mitochondrial membrane potential, and Western blotting. We then used VDR-shRNA to silence the Vitamin D Receptor (VDR) in the BEAS-2B cells. The inflammation, apoptotic rate, and the phosphorylated forms of MEK1/2 and ERK1/2 in cells were detected by RT-qPCR, flow cytometry, and Western blotting. Results The mean linear intercept, septal thickness, and abnormal fibrosis increased, while radial alveolar count decreased in BPD lungs compared to RA lungs. VitD administration was able to ameliorate the phenotype in BPD lungs. IL-6, IFN-γ, and TNF-α expression and the apoptotic rate decreased in the BPD+VitD lung group. VitD pretreatment restored abnormal mitochondrial morphology, reduced mitochondrial membrane loss, and reduced the expression of cleaved caspase-3, Bax, and Bcl-2 in BEAS-2B cells. VitD administration also reduced IL-6, IFN-γ, and TNF-α mRNA, as well as pMEK1/2 and pERK1/2 expression and apoptosis rate in cells exposed to hyperoxia. Conclusion We concluded that VitD treatment ameliorated apoptosis and inflammation by targeting the mitochondrial pathway and via the MEK1/2-ERK1/2 signaling pathway in BPD, thus supporting its potential therapeutic use in this condition.
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Affiliation(s)
- Jinhui Hu
- Department of Neonatology, Children's Hospital of Soochow University, Suzhou, People's Republic of China.,Neonatal Medical Center, Huai'an Maternity and Child Health Care Hospital, Xuzhou Medical University, Huai'an, People's Republic of China
| | - Zhixin Wu
- Department of Neonatology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Huawei Wang
- Department of Neonatology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Haifeng Geng
- Department of Neonatology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Jie Huo
- Department of Neonatology, Children's Hospital of Soochow University, Suzhou, People's Republic of China.,Department of Neonatology, Yangzhou Maternity and Child Health Care Hospital, Yangzhou, People's Republic of China
| | - Xueping Zhu
- Department of Neonatology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Xiaoli Zhu
- Department of Intervention, The First Affiliated Hospital of Soochow University, Suzhou, People's Republic of China
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6
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Hein RFC, Wu JH, Holloway EM, Frum T, Conchola AS, Tsai YH, Wu A, Fine AS, Miller AJ, Szenker-Ravi E, Yan KS, Kuo CJ, Glass I, Reversade B, Spence JR. R-SPONDIN2 + mesenchymal cells form the bud tip progenitor niche during human lung development. Dev Cell 2022; 57:1598-1614.e8. [PMID: 35679862 PMCID: PMC9283295 DOI: 10.1016/j.devcel.2022.05.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/18/2022] [Accepted: 05/16/2022] [Indexed: 01/23/2023]
Abstract
The human respiratory epithelium is derived from a progenitor cell in the distal buds of the developing lung. These "bud tip progenitors" are regulated by reciprocal signaling with surrounding mesenchyme; however, mesenchymal heterogeneity and function in the developing human lung are poorly understood. We interrogated single-cell RNA sequencing data from multiple human lung specimens and identified a mesenchymal cell population present during development that is highly enriched for expression of the WNT agonist RSPO2, and we found that the adjacent bud tip progenitors are enriched for the RSPO2 receptor LGR5. Functional experiments using organoid models, explant cultures, and FACS-isolated RSPO2+ mesenchyme show that RSPO2 is a critical niche cue that potentiates WNT signaling in bud tip progenitors to support their maintenance and multipotency.
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Affiliation(s)
- Renee F C Hein
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Joshua H Wu
- Department of Internal Medicine, Gastroenterology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Emily M Holloway
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Tristan Frum
- Department of Internal Medicine, Gastroenterology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Ansley S Conchola
- Program in Cell and Molecular Biology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Yu-Hwai Tsai
- Department of Internal Medicine, Gastroenterology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Angeline Wu
- Department of Internal Medicine, Gastroenterology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Alexis S Fine
- Department of Internal Medicine, Gastroenterology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Alyssa J Miller
- Program in Cell and Molecular Biology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Emmanuelle Szenker-Ravi
- Laboratory of Human Genetics & Therapeutics, Genome Institute of Singapore, A(∗)STAR, Singapore 138648, Singapore
| | - Kelley S Yan
- Columbia Center for Human Development, Columbia Stem Cell Initiative, Departments of Medicine and Genetics and Development, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Calvin J Kuo
- Department of Medicine, Division of Hematology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Ian Glass
- Department of Pediatrics, Genetic Medicine, University of Washington, Seattle, WA 98195, USA
| | - Bruno Reversade
- Laboratory of Human Genetics & Therapeutics, Genome Institute of Singapore, A(∗)STAR, Singapore 138648, Singapore; Laboratory of Human Genetics & Therapeutics, Institute of Molecular and Cell Biology (IMCB), A∗STAR, Singapore; Medical Genetics Department, Koç University School of Medicine (KUSOM), Istanbul, Turkey
| | - Jason R Spence
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, MI 48109, USA; Department of Internal Medicine, Gastroenterology, University of Michigan Medical School, Ann Arbor, MI 48109, USA; Program in Cell and Molecular Biology, University of Michigan Medical School, Ann Arbor, MI 48109, USA; Department of Biomedical Engineering, University of Michigan College of Engineering, Ann Arbor, MI 48109, USA.
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7
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Wen Q, Li Y, Han Z, Liu H, Zhang S, Chen Y, He J, Du X, Fu Y, Zhang L, Zhang Z, Huang Y, Zhou X, Zhou C, Hu S, Ma L. β-Arrestin 2 Regulates Inflammatory Responses against Mycobacterium tuberculosis Infection through ERK1/2 Signaling. THE JOURNAL OF IMMUNOLOGY 2021; 206:2623-2637. [PMID: 34001657 DOI: 10.4049/jimmunol.2001346] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 03/23/2021] [Indexed: 11/19/2022]
Abstract
Mycobacterium tuberculosis, the pathogen that causes tuberculosis, exhibits complex host-pathogen interactions. Pattern recognition receptors and their downstream signaling pathways play crucial roles in determining the outcome of infection. In particular, the scaffold protein β-arrestin 2 mediates downstream signaling of G protein-coupled receptors. However, the role of β-arrestin 2 in conferring immunity against M. tuberculosis has not yet been explored. We found that β-arrestin 2 was upregulated in the lesioned regions of lung tissues in patients with tuberculosis. M. tuberculosis infection upregulated β-arrestin 2 expression in human macrophages, and silencing of β-arrestin 2 significantly enhanced bactericidal activity by enhancing the expression of proinflammatory cytokines such as TNF-α. β-Arrestin 2 was shown to inhibit the activation of the TLR2/ERK1/2 pathway and its transcriptional regulation activity upon M. tuberculosis infection. Furthermore, β-arrestin 2 transcriptionally regulates TNF-α by binding to CREB1. These observations revealed that the upregulation of β-arrestin 2 is critical for M. tuberculosis to escape immune surveillance through an unknown mechanism. Our research offers a novel interference modality to enhance the immune response against tuberculosis by targeting β-arrestin 2 to modulate the TLR2-β-arrestin 2-ERK1/2-CREB1-TNF-α regulatory axis.
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Affiliation(s)
- Qian Wen
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Yanfen Li
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Zhenyu Han
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Honglin Liu
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Shimeng Zhang
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Yaoxin Chen
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Jianchun He
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Xialin Du
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Yuling Fu
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Lijie Zhang
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Zelin Zhang
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Yulan Huang
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Xinying Zhou
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Chaoying Zhou
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Shengfeng Hu
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Li Ma
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
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8
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Hadzic S, Wu CY, Gredic M, Kojonazarov B, Pak O, Kraut S, Sommer N, Kosanovic D, Grimminger F, Schermuly RT, Seeger W, Bellusci S, Weissmann N. The effect of long-term doxycycline treatment in a mouse model of cigarette smoke-induced emphysema and pulmonary hypertension. Am J Physiol Lung Cell Mol Physiol 2021; 320:L903-L915. [PMID: 33760647 DOI: 10.1152/ajplung.00048.2021] [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: 01/08/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a major cause of death and a still incurable disease, comprising emphysema and chronic bronchitis. In addition to airflow limitation, patients with COPD can suffer from pulmonary hypertension (PH). Doxycycline, an antibiotic from the tetracycline family, in addition to its pronounced antimicrobial activity, acts as a matrix metalloproteinase (MMP) inhibitor and has anti-inflammatory properties. Furthermore, doxycycline treatment exhibited a beneficial effect in several preclinical cardiovascular disease models. In preclinical research, doxycycline is frequently employed for gene expression modulation in Tet-On/Tet-Off transgenic animal models. Therefore, it is crucial to know whether doxycycline treatment in Tet-On/Tet-Off systems has effects independent of gene expression modulation by such systems. Against this background, we assessed the possible curative effects of long-term doxycycline administration in a mouse model of chronic CS exposure. Animals were exposed to cigarette smoke (CS) for 8 mo and then subsequently treated with doxycycline for additional 3 mo in room air conditions. Doxycycline decreased the expression of MMPs and general pro-inflammatory markers in the lungs from CS-exposed mice. This downregulation was, however, insufficient to ameliorate CS-induced emphysema or PH. Tet-On/Tet-Off induction by doxycycline in such models is a feasible genetic approach to study curative effects at least in established CS-induced emphysema and PH. However, we report several parameters that are influenced by doxycycline and use of a Tet-On/Tet-Off system when evaluating those parameters should be interpreted with caution.
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Affiliation(s)
- Stefan Hadzic
- Cardiopulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Justus-Liebig-University, Giessen, Germany
| | - Cheng-Yu Wu
- Cardiopulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Justus-Liebig-University, Giessen, Germany
| | - Marija Gredic
- Cardiopulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Justus-Liebig-University, Giessen, Germany
| | - Baktybek Kojonazarov
- Cardiopulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Justus-Liebig-University, Giessen, Germany.,Institute for Lung Health (ILH), Justus-Liebig-University, Giessen, Germany
| | - Oleg Pak
- Cardiopulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Justus-Liebig-University, Giessen, Germany
| | - Simone Kraut
- Cardiopulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Justus-Liebig-University, Giessen, Germany
| | - Natascha Sommer
- Cardiopulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Justus-Liebig-University, Giessen, Germany
| | - Djuro Kosanovic
- Cardiopulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Justus-Liebig-University, Giessen, Germany.,Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Friedrich Grimminger
- Cardiopulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Justus-Liebig-University, Giessen, Germany
| | - Ralph T Schermuly
- Cardiopulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Justus-Liebig-University, Giessen, Germany
| | - Werner Seeger
- Cardiopulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Justus-Liebig-University, Giessen, Germany.,Institute for Lung Health (ILH), Justus-Liebig-University, Giessen, Germany.,Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Saverio Bellusci
- Cardiopulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Justus-Liebig-University, Giessen, Germany
| | - Norbert Weissmann
- Cardiopulmonary Institute (CPI), University of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Justus-Liebig-University, Giessen, Germany
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