1
|
Shahzad T, Dong Y, Behnke NK, Brandner J, Hilgendorff A, Chao CM, Behnke J, Bellusci S, Ehrhardt H. Anti-CCL2 therapy reduces oxygen toxicity to the immature lung. Cell Death Discov 2024; 10:311. [PMID: 38961074 PMCID: PMC11222519 DOI: 10.1038/s41420-024-02073-5] [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: 05/11/2024] [Revised: 06/11/2024] [Accepted: 06/17/2024] [Indexed: 07/05/2024] Open
Abstract
Oxygen toxicity constitutes a key contributor to bronchopulmonary dysplasia (BPD). Critical step in the pathogenesis of BPD is the inflammatory response in the immature lung with the release of pro-inflammatory cytokines and the influx of innate immune cells. Identification of efficient therapies to alleviate the inflammatory response remains an unmet research priority. First, we studied macrophage and neutrophil profiles in tracheal aspirates of n = 103 preterm infants <29 weeks´ gestation requiring mechanical ventilation. While no differences were present at birth, a higher fraction of macrophages, the predominance of the CD14+CD16+ subtype on day 5 of life was associated with moderate/severe BPD. Newborn CCL-2-/- mice insufficient in pulmonary macrophage recruitment had a reduced influx of neutrophils, lower apoptosis induction in the pulmonary tissue and better-preserved lung morphometry with higher counts of type II cells, mesenchymal stem cells and vascular endothelial cells when exposed to hyperoxia for 7 days. To study the benefit of a targeted approach to prevent the pulmonary influx of macrophages, wildtype mice were repeatedly treated with CCL-2 blocking antibodies while exposed to hyperoxia for 7 days. Congruent with the results in CCL-2-/- animals, the therapeutic intervention reduced the pulmonary inflammatory response, attenuated cell death in the lung tissue and better-preserved lung morphometry. Overall, our preclinical and clinical datasets document the predominant role of macrophage recruitment to the pathogenesis of BPD and establish the abrogation of CCL-2 function as novel approach to protect the immature lung from hyperoxic injury.
Collapse
Affiliation(s)
- Tayyab Shahzad
- Department of General Pediatrics and Neonatology, Justus-Liebig-University and Universities of Giessen and Marburg Lung Center (UGMLC), German Lung Research Center (DZL), Feulgenstrasse 12, Giessen, Germany
| | - Ying Dong
- Department of General Pediatrics and Neonatology, Justus-Liebig-University and Universities of Giessen and Marburg Lung Center (UGMLC), German Lung Research Center (DZL), Feulgenstrasse 12, Giessen, Germany
| | - Nina K Behnke
- Division of Neonatology, University Children's Hospital, Perinatal Center, Ludwig-Maximilians-University, Campus Großhadern, Marchioninistrasse 15, Munich, Germany
| | - Julia Brandner
- Division of Neonatology, University Children's Hospital, Perinatal Center, Ludwig-Maximilians-University, Campus Großhadern, Marchioninistrasse 15, Munich, Germany
| | - Anne Hilgendorff
- Division of Neonatology, University Children's Hospital, Perinatal Center, Ludwig-Maximilians-University, Campus Großhadern, Marchioninistrasse 15, Munich, Germany
- Institute for Lung Health and Immunity and Comprehensive Pneumology Center, Helmholtz Zentrum München, German Center for Lung Research (DZL), Munich, Germany
| | - Cho-Ming Chao
- Department of Pediatrics, Helios University Medical Center, Witten/Herdecke University, Heusnerstrasse 40, 42283, Wuppertal, Germany
| | - Judith Behnke
- Department of General Pediatrics and Neonatology, Justus-Liebig-University and Universities of Giessen and Marburg Lung Center (UGMLC), German Lung Research Center (DZL), Feulgenstrasse 12, Giessen, Germany
| | - Saverio Bellusci
- Department of Internal Medicine II, Universities of Giessen and Marburg Lung Center (UGMLC), Cardio-Pulmonary Institute (CPI), Germany German Lung Research Center (DZL), Aulweg 130, Giessen, Germany
| | - Harald Ehrhardt
- Department of General Pediatrics and Neonatology, Justus-Liebig-University and Universities of Giessen and Marburg Lung Center (UGMLC), German Lung Research Center (DZL), Feulgenstrasse 12, Giessen, Germany.
- Division of Neonatology and Pediatric Intensive Care Medicine, Department of Pediatrics and Adolescent Medicine, University Medical Center Ulm, Ulm, Germany.
| |
Collapse
|
2
|
Luo Y, Cao K, Chiu J, Chen H, Wang HJ, Thornton ME, Grubbs BH, Kolb M, Parmacek MS, Mishina Y, Shi W. Defective mesenchymal Bmpr1a-mediated BMP signaling causes congenital pulmonary cysts. eLife 2024; 12:RP91876. [PMID: 38856718 PMCID: PMC11164533 DOI: 10.7554/elife.91876] [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] [Indexed: 06/11/2024] Open
Abstract
Abnormal lung development can cause congenital pulmonary cysts, the mechanisms of which remain largely unknown. Although the cystic lesions are believed to result directly from disrupted airway epithelial cell growth, the extent to which developmental defects in lung mesenchymal cells contribute to abnormal airway epithelial cell growth and subsequent cystic lesions has not been thoroughly examined. In the present study using genetic mouse models, we dissected the roles of bone morphogenetic protein (BMP) receptor 1a (Bmpr1a)-mediated BMP signaling in lung mesenchyme during prenatal lung development and discovered that abrogation of mesenchymal Bmpr1a disrupted normal lung branching morphogenesis, leading to the formation of prenatal pulmonary cystic lesions. Severe deficiency of airway smooth muscle cells and subepithelial elastin fibers were found in the cystic airways of the mesenchymal Bmpr1a knockout lungs. In addition, ectopic mesenchymal expression of BMP ligands and airway epithelial perturbation of the Sox2-Sox9 proximal-distal axis were detected in the mesenchymal Bmpr1a knockout lungs. However, deletion of Smad1/5, two major BMP signaling downstream effectors, from the lung mesenchyme did not phenocopy the cystic abnormalities observed in the mesenchymal Bmpr1a knockout lungs, suggesting that a Smad-independent mechanism contributes to prenatal pulmonary cystic lesions. These findings reveal for the first time the role of mesenchymal BMP signaling in lung development and a potential pathogenic mechanism underlying congenital pulmonary cysts.
Collapse
Affiliation(s)
- Yongfeng Luo
- Department of Surgery, Children’s Hospital Los Angeles, Keck School of Medicine, University of Southern CaliforniaLos AngelesUnited States
| | - Ke Cao
- Division of Pulmonary, Critical Care & Sleep Medicine, Department of Internal Medicine, University of Cincinnati College of MedicineCincinnatiUnited States
| | - Joanne Chiu
- Department of Surgery, Children’s Hospital Los Angeles, Keck School of Medicine, University of Southern CaliforniaLos AngelesUnited States
| | - Hui Chen
- Division of Pulmonary, Critical Care & Sleep Medicine, Department of Internal Medicine, University of Cincinnati College of MedicineCincinnatiUnited States
| | - Hong-Jun Wang
- Division of Pulmonary, Critical Care & Sleep Medicine, Department of Internal Medicine, University of Cincinnati College of MedicineCincinnatiUnited States
| | - Matthew E Thornton
- Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Keck School of Medicine, University of Southern CaliforniaLos AngelesUnited States
| | - Brendan H Grubbs
- Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Keck School of Medicine, University of Southern CaliforniaLos AngelesUnited States
| | - Martin Kolb
- Department of Medicine, McMaster UniversityHamiltonCanada
| | - Michael S Parmacek
- Department of Medicine, Perelman School of Medicine, University of PennsylvaniaPhiladelphiaUnited States
| | - Yuji Mishina
- Department of Biologic and Material Sciences, University of Michigan-Ann ArborAnn ArborUnited States
| | - Wei Shi
- Division of Pulmonary, Critical Care & Sleep Medicine, Department of Internal Medicine, University of Cincinnati College of MedicineCincinnatiUnited States
| |
Collapse
|
3
|
Luo Y, Cao K, Chiu J, Chen H, Wang HJ, Thornton ME, Grubbs BH, Kolb M, Parmacek MS, Mishina Y, Shi W. Defective mesenchymal Bmpr1a-mediated BMP signaling causes congenital pulmonary cysts. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.09.26.559527. [PMID: 37808788 PMCID: PMC10557633 DOI: 10.1101/2023.09.26.559527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Abnormal lung development can cause congenital pulmonary cysts, the mechanisms of which remain largely unknown. Although the cystic lesions are believed to result directly from disrupted airway epithelial cell growth, the extent to which developmental defects in lung mesenchymal cells contribute to abnormal airway epithelial cell growth and subsequent cystic lesions has not been thoroughly examined. In the present study, we dissected the roles of BMP receptor 1a (Bmpr1a)-mediated BMP signaling in lung mesenchyme during prenatal lung development and discovered that abrogation of mesenchymal Bmpr1a disrupted normal lung branching morphogenesis, leading to the formation of prenatal pulmonary cystic lesions. Severe deficiency of airway smooth muscle cells and subepithelial elastin fibers were found in the cystic airways of the mesenchymal Bmpr1a knockout lungs. In addition, ectopic mesenchymal expression of BMP ligands and airway epithelial perturbation of the Sox2-Sox9 proximal-distal axis were detected in the mesenchymal Bmpr1a knockout lungs. However, deletion of Smad1/5, two major BMP signaling downstream effectors, from the lung mesenchyme did not phenocopy the cystic abnormalities observed in the mesenchymal Bmpr1a knockout lungs, suggesting that a Smad-independent mechanism contributes to prenatal pulmonary cystic lesions. These findings reveal for the first time the role of mesenchymal BMP signaling in lung development and a potential pathogenic mechanism underlying congenital pulmonary cysts.
Collapse
Affiliation(s)
- Yongfeng Luo
- Department of Surgery, Children’s Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA 90027
| | - Ke Cao
- Division of Pulmonary, Critical Care & Sleep Medicine, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Joanne Chiu
- Department of Surgery, Children’s Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA 90027
| | - Hui Chen
- Division of Pulmonary, Critical Care & Sleep Medicine, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Hong-Jun Wang
- Division of Pulmonary, Critical Care & Sleep Medicine, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Matthew E. Thornton
- Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, USA
| | - Brendan H. Grubbs
- Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, USA
| | - Martin Kolb
- Department of Medicine, McMaster University, Hamilton, ON, Canada L8N 4A6
| | - Michael S. Parmacek
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Yuji Mishina
- Department of Biologic and Material Sciences, University of Michigan, 1011 N. University Ave., Ann Arbor, MI 48109
| | - Wei Shi
- Division of Pulmonary, Critical Care & Sleep Medicine, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| |
Collapse
|
4
|
Khan IS, Molina C, Ren X, Auyeung VC, Cohen M, Tsukui T, Atakilit A, Sheppard D. Impaired Myofibroblast Proliferation is a Central Feature of Pathologic Post-Natal Alveolar Simplification. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.21.572766. [PMID: 38187712 PMCID: PMC10769348 DOI: 10.1101/2023.12.21.572766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
Premature infants with bronchopulmonary dysplasia (BPD) have impaired alveolar gas exchange due to alveolar simplification and dysmorphic pulmonary vasculature. Advances in clinical care have improved survival for infants with BPD, but the overall incidence of BPD remains unchanged because we lack specific therapies to prevent this disease. Recent work has suggested a role for increased transforming growth factor-beta (TGFβ) signaling and myofibroblast populations in BPD pathogenesis, but the functional significance of each remains unclear. Here, we utilize multiple murine models of alveolar simplification and comparative single-cell RNA sequencing to identify shared mechanisms that could contribute to BPD pathogenesis. Single-cell RNA sequencing reveals a profound loss of myofibroblasts in two models of BPD and identifies gene expression signatures of increased TGFβ signaling, cell cycle arrest, and impaired proliferation in myofibroblasts. Using pharmacologic and genetic approaches, we find no evidence that increased TGFβ signaling in the lung mesenchyme contributes to alveolar simplification. In contrast, this is likely a failed compensatory response, since none of our approaches to inhibit TGFb signaling protect mice from alveolar simplification due to hyperoxia while several make simplification worse. In contrast, we find that impaired myofibroblast proliferation is a central feature in several murine models of BPD, and we show that inhibiting myofibroblast proliferation is sufficient to cause pathologic alveolar simplification. Our results underscore the importance of impaired myofibroblast proliferation as a central feature of alveolar simplification and suggest that efforts to reverse this process could have therapeutic value in BPD.
Collapse
Affiliation(s)
- Imran S. Khan
- Division of Neonatology, Department of Pediatrics, UCSF
- Cardiovascular Research Institute, UCSF
| | - Christopher Molina
- Cardiovascular Research Institute, UCSF
- Division of Pulmonary, Critical Care, Allergy, and Sleep, UCSF
- Department of Medicine, UCSF
| | - Xin Ren
- Cardiovascular Research Institute, UCSF
- Division of Pulmonary, Critical Care, Allergy, and Sleep, UCSF
- Department of Medicine, UCSF
| | - Vincent C. Auyeung
- Cardiovascular Research Institute, UCSF
- Division of Pulmonary, Critical Care, Allergy, and Sleep, UCSF
- Department of Medicine, UCSF
| | - Max Cohen
- Division of Pulmonary, Critical Care, Allergy, and Sleep, UCSF
- Department of Medicine, UCSF
| | - Tatsuya Tsukui
- Cardiovascular Research Institute, UCSF
- Division of Pulmonary, Critical Care, Allergy, and Sleep, UCSF
- Department of Medicine, UCSF
| | - Amha Atakilit
- Cardiovascular Research Institute, UCSF
- Division of Pulmonary, Critical Care, Allergy, and Sleep, UCSF
- Department of Medicine, UCSF
| | - Dean Sheppard
- Cardiovascular Research Institute, UCSF
- Division of Pulmonary, Critical Care, Allergy, and Sleep, UCSF
- Department of Medicine, UCSF
| |
Collapse
|
5
|
Ma M, Bao T, Li J, Cao L, Yu B, Hu J, Cheng H, Tian Z. Cryptotanshinone affects HFL-1 cells proliferation by inhibiting cytokines secretion in RAW264.7 cells and ameliorates inflammation and fibrosis in newborn rats with hyperoxia induced lung injury. Front Pharmacol 2023; 14:1192370. [PMID: 37560477 PMCID: PMC10407416 DOI: 10.3389/fphar.2023.1192370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 07/13/2023] [Indexed: 08/11/2023] Open
Abstract
Objective: Bronchopulmonary dysplasia (BPD) is a common complication of prematurity and has no specific treatment option. Moreover, inflammation and fibrosis play a vital role in the development of BPD. Thus, this study aimed to explore the role of the anti-inflammatory and anti-fibrotic drug cryptotanshinone (CTS) in the treatment of inflammation and fibrosis in BPD. Methods: In vivo, Sprague-Dawley rats (male) were divided into air, hyperoxia and CTS groups with different dose interventions (7.5, 15, and 30 mg/kg). A BPD rat model was induced by continuous inhalation of hyperoxia (95%) for 7 days, during which different doses of CTS were injected intraperitoneally. Furthermore, histological examination, hydroxyproline content measurement, Western blot and real-time quantitative polymerase chain reaction were used to detect the levels of inflammation and fibrosis in the tissues. RAW264.7 cells exposed to 95% oxygen were collected and co-cultured with fibroblasts to determine the expression levels of α-SMA, collagen-Ⅰ and MMPs. The levels of pro-inflammatory cytokines such as TNF-α, IL-6 and pro-fibrotic factor TGF-β1 in the supernatants were measured using enzyme-linked immunosorbent assay. Results: Haematoxylin and eosin staining revealed that CTS reduced the inflammatory response in rat lungs. Masson staining revealed that CTS alleviated the level of pulmonary fibrosis. CTS also reduced the levels of TNF-α, IL-6 and TGF-β1 along with the expression of the fibrosis marker α-SMA in lung tissue. Similarly, in vitro analysis revealed that CTS decreased the levels of TNF-α, IL-6 and TGF-β1 expressed in RAW 264.7 cells, and reduced α-SMA, collagen-Ⅰ, MMPs concentrations in HFL-1 cells co-cultured with the supernatant of RAW264.7 cells after hyperoxia. Conclusion: CTS can attenuate the hyperoxia-induced inflammatory response and the level of fibrosis by regulating the levels of inflammatory factors and fibrotic factor TGF-β1 expressed by macrophages, thereby highlighting the therapeutic potential of CTS in the treatment of BPD.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Huaiping Cheng
- Department of Neonatology, The Affiliated Huaian No. 1 People’s Hospital of Nanjing Medical University, Huai’an, Jiangsu, China
| | - Zhaofang Tian
- Department of Neonatology, The Affiliated Huaian No. 1 People’s Hospital of Nanjing Medical University, Huai’an, Jiangsu, China
| |
Collapse
|
6
|
Bush D, Juliano C, Bowler S, Tiozzo C. Development and Disorders of the Airway in Bronchopulmonary Dysplasia. CHILDREN (BASEL, SWITZERLAND) 2023; 10:1127. [PMID: 37508624 PMCID: PMC10378517 DOI: 10.3390/children10071127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/07/2023] [Accepted: 06/26/2023] [Indexed: 07/30/2023]
Abstract
Bronchopulmonary dysplasia (BPD), a disorder characterized by arrested lung development, is a frequent cause of morbidity and mortality in premature infants. Parenchymal lung changes in BPD are relatively well-characterized and highly studied; however, there has been less emphasis placed on the role that airways disease plays in the pathophysiology of BPD. In preterm infants born between 22 and 32 weeks gestation, the conducting airways are fully formed but still immature and therefore susceptible to injury and further disruption of development. The arrest of maturation results in more compliant airways that are more susceptible to deformation and damage. Consequently, neonates with BPD are prone to developing airway pathology, particularly for patients who require intubation and positive-pressure ventilation. Airway pathology, which can be divided into large and small airways disease, results in increased respiratory morbidity in neonates with chronic lung disease of prematurity.
Collapse
Affiliation(s)
- Douglas Bush
- Division of Pediatric Pulmonology, Department of Pediatrics, Mount Sinai Hospital, Icahn School of Medicine, New York, NY 10029, USA
| | - Courtney Juliano
- Division of Neonatology, Department of Pediatrics, Mount Sinai Hospital, Icahn School of Medicine, New York, NY 10029, USA
| | - Selina Bowler
- Department of Pediatrics, New York University Langone-Long Island, Mineola, NY 11501, USA
| | - Caterina Tiozzo
- Division of Neonatology, Department of Pediatrics, Mount Sinai Hospital, Icahn School of Medicine, New York, NY 10029, USA
| |
Collapse
|
7
|
Calthorpe RJ, Poulter C, Smyth AR, Sharkey D, Bhatt J, Jenkins G, Tatler AL. Complex roles of TGF-β signaling pathways in lung development and bronchopulmonary dysplasia. Am J Physiol Lung Cell Mol Physiol 2023; 324:L285-L296. [PMID: 36625900 PMCID: PMC9988523 DOI: 10.1152/ajplung.00106.2021] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
As survival of extremely preterm infants continues to improve, there is also an associated increase in bronchopulmonary dysplasia (BPD), one of the most significant complications of preterm birth. BPD development is multifactorial resulting from exposure to multiple antenatal and postnatal stressors. BPD has both short-term health implications and long-term sequelae including increased respiratory, cardiovascular, and neurological morbidity. Transforming growth factor β (TGF-β) is an important signaling pathway in lung development, organ injury, and fibrosis and is implicated in the development of BPD. This review provides a detailed account on the role of TGF-β in antenatal and postnatal lung development, the effect of known risk factors for BPD on the TGF-β signaling pathway, and how medications currently in use or under development, for the prevention or treatment of BPD, affect TGF-β signaling.
Collapse
Affiliation(s)
- Rebecca J Calthorpe
- Lifespan & Population Health, School of Medicine, University of Nottingham, Nottingham, United Kingdom.,NIHR Nottingham Biomedical Research Centre, Biodiscovery Institute, University of Nottingham, Nottingham, United Kingdom
| | - Caroline Poulter
- Department of Pediatrics, Queens Medical Centre, Nottingham University Hospitals NHS Trust, Nottingham, United Kingdom
| | - Alan R Smyth
- Lifespan & Population Health, School of Medicine, University of Nottingham, Nottingham, United Kingdom.,NIHR Nottingham Biomedical Research Centre, Biodiscovery Institute, University of Nottingham, Nottingham, United Kingdom
| | - Don Sharkey
- Centre for Perinatal Research, School of Medicine, University of Nottingham, Nottingham, United Kingdom
| | - Jayesh Bhatt
- Department of Pediatrics, Queens Medical Centre, Nottingham University Hospitals NHS Trust, Nottingham, United Kingdom
| | - Gisli Jenkins
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Amanda L Tatler
- NIHR Nottingham Biomedical Research Centre, Biodiscovery Institute, University of Nottingham, Nottingham, United Kingdom
| |
Collapse
|
8
|
Baguma-Nibasheka M, Kablar B. Mechanics of Lung Development. ADVANCES IN ANATOMY, EMBRYOLOGY, AND CELL BIOLOGY 2023; 236:131-150. [PMID: 37955774 DOI: 10.1007/978-3-031-38215-4_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
We summarize how skeletal muscle and lung developmental biology fields have been bridged to benefit from mouse genetic engineering technologies and to explore the role of fetal breathing-like movements (FBMs) in lung development, by using skeletal muscle-specific mutant mice. It has been known for a long time that FBMs are essential for the lung to develop properly. However, the cellular and molecular mechanisms transducing the mechanical forces of muscular activity into specific genetic programs that propel lung morphogenesis (development of the shape, form and size of the lung, its airways, and gas exchange surface) as well as its differentiation (acquisition of specialized cell structural and functional features from their progenitor cells) are only starting to be revealed. This chapter is a brief synopsis of the cumulative findings from that ongoing quest. An update on and the rationale for our recent International Mouse Phenotyping Consortium (IMPC) search is also provided.
Collapse
Affiliation(s)
- Mark Baguma-Nibasheka
- Department of Pharmacology, Faculty of Medicine, Dalhousie University, Halifax, NS, Canada.
| | - Boris Kablar
- Department of Medical Neuroscience, Anatomy and Pathology, Faculty of Medicine, Dalhousie University, Halifax, NS, Canada
| |
Collapse
|
9
|
Dong Y, Rivetti S, Lingampally A, Tacke S, Kojonazarov B, Bellusci S, Ehrhardt H. Insights into the Black Box of Intra-Amniotic Infection and Its Impact on the Premature Lung: From Clinical and Preclinical Perspectives. Int J Mol Sci 2022; 23:ijms23179792. [PMID: 36077187 PMCID: PMC9456379 DOI: 10.3390/ijms23179792] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 08/24/2022] [Accepted: 08/26/2022] [Indexed: 11/16/2022] Open
Abstract
Intra-amniotic infection (IAI) is one major driver for preterm birth and has been demonstrated by clinical studies to exert both beneficial and injurious effects on the premature lung, possibly due to heterogeneity in the microbial type, timing, and severity of IAI. Due to the inaccessibility of the intra-amniotic cavity during pregnancies, preclinical animal models investigating pulmonary consequences of IAI are indispensable to elucidate the pathogenesis of bronchopulmonary dysplasia (BPD). It is postulated that on one hand imbalanced inflammation, orchestrated by lung immune cells such as macrophages, may impact on airway epithelium, vascular endothelium, and interstitial mesenchyme, resulting in abnormal lung development. On the other hand, excessive suppression of inflammation may as well cause pulmonary injury and a certain degree of inflammation is beneficial. So far, effective strategies to prevent and treat BPD are scarce. Therapeutic options targeting single mediators in signaling cascades and mesenchymal stromal cells (MSCs)-based therapies with global regulatory capacities have demonstrated efficacy in preclinical animal models and warrant further validation in patient populations. Ante-, peri- and postnatal exposome analysis and therapeutic investigations using multiple omics will fundamentally dissect the black box of IAI and its effect on the premature lung, contributing to precisely tailored and individualized therapies.
Collapse
Affiliation(s)
- Ying Dong
- Department of General Pediatrics and Neonatology, Universities of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Justus-Liebig-University, Feulgen Street 12, 35392 Giessen, Germany
- Correspondence:
| | - Stefano Rivetti
- Cardio-Pulmonary Institute (CPI), Universities of Giessen and Marburg Lung Center (UGMLC), Justus-Liebig-University, Aulweg 130, 35392 Giessen, Germany
| | - Arun Lingampally
- Cardio-Pulmonary Institute (CPI), Universities of Giessen and Marburg Lung Center (UGMLC), Justus-Liebig-University, Aulweg 130, 35392 Giessen, Germany
| | - Sabine Tacke
- Clinic for Small Animals (Surgery), Faculty of Veterinary Medicine, Justus-Liebig-University, Frankfurter Street 114, 35392 Giessen, Germany
| | - Baktybek Kojonazarov
- Institute for Lung Health (ILH), Universities of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Justus-Liebig-University, Aulweg 130, 35392 Giessen, Germany
| | - Saverio Bellusci
- Cardio-Pulmonary Institute (CPI), Universities of Giessen and Marburg Lung Center (UGMLC), Justus-Liebig-University, Aulweg 130, 35392 Giessen, Germany
| | - Harald Ehrhardt
- Department of General Pediatrics and Neonatology, Universities of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Justus-Liebig-University, Feulgen Street 12, 35392 Giessen, Germany
| |
Collapse
|
10
|
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.
Collapse
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.
| |
Collapse
|
11
|
Holzfurtner L, Shahzad T, Dong Y, Rekers L, Selting A, Staude B, Lauer T, Schmidt A, Rivetti S, Zimmer KP, Behnke J, Bellusci S, Ehrhardt H. When inflammation meets lung development-an update on the pathogenesis of bronchopulmonary dysplasia. Mol Cell Pediatr 2022; 9:7. [PMID: 35445327 PMCID: PMC9021337 DOI: 10.1186/s40348-022-00137-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 02/14/2022] [Indexed: 12/28/2022] Open
Abstract
Even more than 50 years after its initial description, bronchopulmonary dysplasia (BPD) remains one of the most important and lifelong sequelae following premature birth. Tremendous efforts have been undertaken since then to reduce this ever-increasing disease burden but a therapeutic breakthrough preventing BPD is still not in sight. The inflammatory response provoked in the immature lung is a key driver of distorted lung development and impacts the formation of alveolar, mesenchymal, and vascular structures during a particularly vulnerable time-period. During the last 5 years, new scientific insights have led to an improved pathomechanistic understanding of BPD origins and disease drivers. Within the framework of current scientific progress, concepts involving disruption of the balance of key inflammatory and lung growth promoting pathways by various stimuli, take center stage. Still today, the number of efficient therapeutics available to prevent BPD is limited to a few, well-established pharmacological interventions including postnatal corticosteroids, early caffeine administration, and vitamin A. Recent advances in the clinical care of infants in the neonatal intensive care unit (NICU) have led to improvements in survival without a consistent reduction in the incidence of BPD. Our update provides latest insights from both preclinical models and clinical cohort studies and describes novel approaches to prevent BPD.
Collapse
Affiliation(s)
- Lena Holzfurtner
- Department of General Pediatrics and Neonatology, Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Lung Research Center (DZL), Justus-Liebig-University, Feulgenstrasse 12, 35392, Giessen, Germany
| | - Tayyab Shahzad
- Department of General Pediatrics and Neonatology, Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Lung Research Center (DZL), Justus-Liebig-University, Feulgenstrasse 12, 35392, Giessen, Germany
| | - Ying Dong
- Department of General Pediatrics and Neonatology, Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Lung Research Center (DZL), Justus-Liebig-University, Feulgenstrasse 12, 35392, Giessen, Germany
| | - Lisa Rekers
- Department of General Pediatrics and Neonatology, Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Lung Research Center (DZL), Justus-Liebig-University, Feulgenstrasse 12, 35392, Giessen, Germany
| | - Ariane Selting
- Department of General Pediatrics and Neonatology, Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Lung Research Center (DZL), Justus-Liebig-University, Feulgenstrasse 12, 35392, Giessen, Germany
| | - Birte Staude
- Department of General Pediatrics and Neonatology, Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Lung Research Center (DZL), Justus-Liebig-University, Feulgenstrasse 12, 35392, Giessen, Germany
| | - Tina Lauer
- Department of General Pediatrics and Neonatology, Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Lung Research Center (DZL), Justus-Liebig-University, Feulgenstrasse 12, 35392, Giessen, Germany
| | - Annesuse Schmidt
- Department of General Pediatrics and Neonatology, Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Lung Research Center (DZL), Justus-Liebig-University, Feulgenstrasse 12, 35392, Giessen, Germany
| | - Stefano Rivetti
- Department of Internal Medicine II, Universities of Giessen and Marburg Lung Center (UGMLC), Cardiopulmonary Institute (CPI), Member of the German Center for Lung Research (DZL), Justus-Liebig-University, Aulweg 130, 35392, Giessen, Germany
| | - Klaus-Peter Zimmer
- Department of General Pediatrics and Neonatology, Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Lung Research Center (DZL), Justus-Liebig-University, Feulgenstrasse 12, 35392, Giessen, Germany
| | - Judith Behnke
- Department of General Pediatrics and Neonatology, Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Lung Research Center (DZL), Justus-Liebig-University, Feulgenstrasse 12, 35392, Giessen, Germany
| | - Saverio Bellusci
- Department of Internal Medicine II, Universities of Giessen and Marburg Lung Center (UGMLC), Cardiopulmonary Institute (CPI), Member of the German Center for Lung Research (DZL), Justus-Liebig-University, Aulweg 130, 35392, Giessen, Germany
| | - Harald Ehrhardt
- Department of General Pediatrics and Neonatology, Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Lung Research Center (DZL), Justus-Liebig-University, Feulgenstrasse 12, 35392, Giessen, Germany.
| |
Collapse
|
12
|
Slot E, Boers R, Boers J, van IJcken WFJ, Tibboel D, Gribnau J, Rottier R, de Klein A. Genome wide DNA methylation analysis of alveolar capillary dysplasia lung tissue reveals aberrant methylation of genes involved in development including the FOXF1 locus. Clin Epigenetics 2021; 13:148. [PMID: 34325731 PMCID: PMC8323302 DOI: 10.1186/s13148-021-01134-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 07/14/2021] [Indexed: 12/11/2022] Open
Abstract
Background Alveolar capillary dysplasia with or without misalignment of the pulmonary veins (ACD/MPV) is a lethal congenital lung disorder associated with a variety of heterozygous genomic alterations in the FOXF1 gene or its 60 kb enhancer. Cases without a genomic alteration in the FOXF1 locus have been described as well. The mechanisms responsible for FOXF1 haploinsufficiency and the cause of ACD/MPV in patients without a genomic FOXF1 variant are poorly understood, complicating the search for potential therapeutic targets for ACD/MPV. To investigate the contribution of aberrant DNA methylation, genome wide methylation patterns of ACD/MPV lung tissues were compared with methylation patterns of control lung tissues using the recently developed technique Methylated DNA sequencing (MeD-seq).
Results Eight ACD/MPV lung tissue samples and three control samples were sequenced and their mutual comparison resulted in identification of 319 differentially methylated regions (DMRs) genome wide, involving 115 protein coding genes. The potentially upregulated genes were significantly enriched in developmental signalling pathways, whereas potentially downregulated genes were mainly enriched in O-linked glycosylation. In patients with a large maternal deletion encompassing the 60 kb FOXF1 enhancer, DNA methylation patterns in this FOXF1 enhancer were not significantly different compared to controls. However, two hypermethylated regions were detected in the 60 kb FOXF1 enhancer of patients harbouring a FOXF1 point mutation. Lastly, a large hypermethylated region overlapping the first FOXF1 exon was found in one of the ACD/MPV patients without a known pathogenic FOXF1 variation.
Conclusion This is the first study providing genome wide methylation data on lung tissue of ACD/MPV patients. DNA methylation analyses in the FOXF1 locus excludes maternal imprinting of the 60 kb FOXF1 enhancer. Hypermethylation at the 60 kb FOXF1 enhancer might contribute to FOXF1 haploinsufficiency caused by heterozygous mutations in the FOXF1 coding region. Interestingly, DNA methylation analyses of patients without a genomic FOXF1 variant suggest that abnormal hypermethylation of exon 1 might play a role in some ACD/MPV in patients. Supplementary Information The online version contains supplementary material available at 10.1186/s13148-021-01134-1.
Collapse
Affiliation(s)
- Evelien Slot
- Department of Paediatric Surgery, Erasmus MC - Sophia Children's Hospital Rotterdam, Rotterdam, Netherlands.,Department of Clinical Genetics, Rm Ee2089, Erasmus MC Rotterdam, Wytemaweg 80, 3015 CN, Rotterdam, Netherlands
| | - Ruben Boers
- Department of Developmental Biology, Oncode Institute, Erasmus MC Rotterdam, Rotterdam, Netherlands
| | - Joachim Boers
- Department of Developmental Biology, Oncode Institute, Erasmus MC Rotterdam, Rotterdam, Netherlands
| | - Wilfred F J van IJcken
- Center for Biomics, Erasmus University Medical Center, Erasmus MC, Rotterdam, Netherlands.,Department of Cell Biology, Erasmus University Medical Center, Erasmus MC, Rotterdam, Netherlands
| | - Dick Tibboel
- Department of Paediatric Surgery, Erasmus MC - Sophia Children's Hospital Rotterdam, Rotterdam, Netherlands
| | - Joost Gribnau
- Department of Developmental Biology, Oncode Institute, Erasmus MC Rotterdam, Rotterdam, Netherlands
| | - Robbert Rottier
- Department of Paediatric Surgery, Erasmus MC - Sophia Children's Hospital Rotterdam, Rotterdam, Netherlands.,Department of Cell Biology, Erasmus University Medical Center, Erasmus MC, Rotterdam, Netherlands
| | - Annelies de Klein
- Department of Clinical Genetics, Rm Ee2089, Erasmus MC Rotterdam, Wytemaweg 80, 3015 CN, Rotterdam, Netherlands.
| |
Collapse
|
13
|
Wu X, Verschut V, Woest ME, Ng-Blichfeldt JP, Matias A, Villetti G, Accetta A, Facchinetti F, Gosens R, Kistemaker LEM. Rho-Kinase 1/2 Inhibition Prevents Transforming Growth Factor-β-Induced Effects on Pulmonary Remodeling and Repair. Front Pharmacol 2021; 11:609509. [PMID: 33551810 PMCID: PMC7855981 DOI: 10.3389/fphar.2020.609509] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 12/15/2020] [Indexed: 11/13/2022] Open
Abstract
Transforming growth factor (TGF)-β-induced myofibroblast transformation and alterations in mesenchymal-epithelial interactions contribute to chronic lung diseases such as chronic obstructive pulmonary disease (COPD), asthma and pulmonary fibrosis. Rho-associated coiled-coil-forming protein kinase (ROCK) consists as two isoforms, ROCK1 and ROCK2, and both are playing critical roles in many cellular responses to injury. In this study, we aimed to elucidate the differential role of ROCK isoforms on TGF-β signaling in lung fibrosis and repair. For this purpose, we tested the effect of a non-selective ROCK 1 and 2 inhibitor (compound 31) and a selective ROCK2 inhibitor (compound A11) in inhibiting TGF-β-induced remodeling in lung fibroblasts and slices; and dysfunctional epithelial-progenitor interactions in lung organoids. Here, we demonstrated that the inhibition of ROCK1/2 with compound 31 represses TGF-β-driven actin remodeling as well as extracellular matrix deposition in lung fibroblasts and PCLS, whereas selective ROCK2 inhibition with compound A11 did not. Furthermore, the TGF-β induced inhibition of organoid formation was functionally restored in a concentration-dependent manner by both dual ROCK 1 and 2 inhibition and selective ROCK2 inhibition. We conclude that dual pharmacological inhibition of ROCK 1 and 2 counteracts TGF-β induced effects on remodeling and alveolar epithelial progenitor function, suggesting this to be a promising therapeutic approach for respiratory diseases associated with fibrosis and defective lung repair.
Collapse
Affiliation(s)
- Xinhui Wu
- Department of Molecular Pharmacology, Faculty of Science and Engineering, University of Groningen, Groningen, Netherlands
- Groningen Research Institute for Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | | | - Manon E. Woest
- Department of Molecular Pharmacology, Faculty of Science and Engineering, University of Groningen, Groningen, Netherlands
- Groningen Research Institute for Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- AQUILO BV, Groningen, Netherlands
| | - John-Poul Ng-Blichfeldt
- Department of Molecular Pharmacology, Faculty of Science and Engineering, University of Groningen, Groningen, Netherlands
- Groningen Research Institute for Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Ana Matias
- Department of Molecular Pharmacology, Faculty of Science and Engineering, University of Groningen, Groningen, Netherlands
- Groningen Research Institute for Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Gino Villetti
- Corporate Pre-Clinical R and D, Chiesi Farmaceutici S.p.A., Parma, Italy
| | - Alessandro Accetta
- Corporate Pre-Clinical R and D, Chiesi Farmaceutici S.p.A., Parma, Italy
| | | | - Reinoud Gosens
- Department of Molecular Pharmacology, Faculty of Science and Engineering, University of Groningen, Groningen, Netherlands
- Groningen Research Institute for Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Loes E. M. Kistemaker
- Department of Molecular Pharmacology, Faculty of Science and Engineering, University of Groningen, Groningen, Netherlands
- Groningen Research Institute for Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- AQUILO BV, Groningen, Netherlands
| |
Collapse
|
14
|
Lezmi G, Vibhushan S, Bevilaqua C, Crapart N, Cagnard N, Khen-Dunlop N, Boyle-Freyssaut C, Hadchouel A, Delacourt C. Congenital cystic adenomatoid malformations of the lung: an epithelial transcriptomic approach. Respir Res 2020; 21:43. [PMID: 32019538 PMCID: PMC7001206 DOI: 10.1186/s12931-020-1306-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 01/27/2020] [Indexed: 12/19/2022] Open
Abstract
Background The pathophysiology of congenital cystic adenomatoid malformations (CCAM) of the lung remains poorly understood. Aim This study aimed to identify more precisely the molecular mechanisms limited to a compartment of lung tissue, through a transcriptomic analysis of the epithelium of macrocystic forms. Methods Tissue fragments displaying CCAM were obtained during planned surgical resections. Epithelial mRNA was obtained from cystic and normal areas after laser capture microdissection (LCM). Transcriptomic analyses were performed and the results were confirmed by RT-PCR and immunohistochemistry in independent samples. Results After controlling for RNA quality, we analysed the transcriptomes of six cystic areas and five control areas. In total, 393 transcripts were differentially expressed in the epithelium, between CCAM and control areas. The most highly redundant genes involved in biological functions and signalling pathways differentially expressed between CCAM and control epithelium included TGFB2, TGFBR1, and MAP 2 K1. These genes were considered particularly relevant as they have been implicated in branching morphogenesis. RT-qPCR analysis confirmed in independent samples that TGFBR1 was more strongly expressed in CCAM than in control tissues (p < 0.03). Immunohistochemistry analysis showed TGFBR1 (p = 0.0007) and TGFB2 (p < 0.02) levels to be significantly higher in the epithelium of CCAM than in that of control tissues. Conclusions This compartmentalised transcriptomic analysis of the epithelium of macrocystic lung malformations identified a dysregulation of TGFB signalling at the mRNA and protein levels, suggesting a possible role of this pathway in CCAM pathogenesis. Trial registration ClinicalTrials.gov Identifier: NCT01732185.
Collapse
Affiliation(s)
- Guillaume Lezmi
- Service de Pneumologie et d'Allergologie Pédiatriques, AP-HP, Hôpital Universitaire Necker-Enfants Malades, 75743 Cedex 15, Paris, France.,INSERM, U955, Institut Mondor de Recherche Biomedicale (IMRB), Equipe 4, 94000, Créteil, France.,Paris Descartes University, Paris, France
| | - Shamila Vibhushan
- INSERM, U955, Institut Mondor de Recherche Biomedicale (IMRB), Equipe 4, 94000, Créteil, France
| | - Claudia Bevilaqua
- Institut National de la Recherche Agronomique (INRA), AgroParisTech, Université Paris-Saclay, Jouy en Josas, France
| | - Nicolas Crapart
- Institut National de la Recherche Agronomique (INRA), AgroParisTech, Université Paris-Saclay, Jouy en Josas, France
| | - Nicolas Cagnard
- Inserm UMR1163, Imagine Institute, Genomics Core Facility, Paris, France
| | - Naziha Khen-Dunlop
- Paris Descartes University, Paris, France.,Service de Chirurgie Pédiatrique, AP-HP, Hôpital Universitaire Necker-Enfants Malades, 75743 Cedex 15, Paris, France
| | | | - Alice Hadchouel
- Service de Pneumologie et d'Allergologie Pédiatriques, AP-HP, Hôpital Universitaire Necker-Enfants Malades, 75743 Cedex 15, Paris, France.,INSERM, U955, Institut Mondor de Recherche Biomedicale (IMRB), Equipe 4, 94000, Créteil, France.,Paris Descartes University, Paris, France
| | - Christophe Delacourt
- Service de Pneumologie et d'Allergologie Pédiatriques, AP-HP, Hôpital Universitaire Necker-Enfants Malades, 75743 Cedex 15, Paris, France. .,INSERM, U955, Institut Mondor de Recherche Biomedicale (IMRB), Equipe 4, 94000, Créteil, France. .,Paris Descartes University, Paris, France.
| |
Collapse
|
15
|
Lignelli E, Palumbo F, Myti D, Morty RE. Recent advances in our understanding of the mechanisms of lung alveolarization and bronchopulmonary dysplasia. Am J Physiol Lung Cell Mol Physiol 2019; 317:L832-L887. [PMID: 31596603 DOI: 10.1152/ajplung.00369.2019] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is the most common cause of morbidity and mortality in preterm infants. A key histopathological feature of BPD is stunted late lung development, where the process of alveolarization-the generation of alveolar gas exchange units-is impeded, through mechanisms that remain largely unclear. As such, there is interest in the clarification both of the pathomechanisms at play in affected lungs, and the mechanisms of de novo alveoli generation in healthy, developing lungs. A better understanding of normal and pathological alveolarization might reveal opportunities for improved medical management of affected infants. Furthermore, disturbances to the alveolar architecture are a key histopathological feature of several adult chronic lung diseases, including emphysema and fibrosis, and it is envisaged that knowledge about the mechanisms of alveologenesis might facilitate regeneration of healthy lung parenchyma in affected patients. To this end, recent efforts have interrogated clinical data, developed new-and refined existing-in vivo and in vitro models of BPD, have applied new microscopic and radiographic approaches, and have developed advanced cell-culture approaches, including organoid generation. Advances have also been made in the development of other methodologies, including single-cell analysis, metabolomics, lipidomics, and proteomics, as well as the generation and use of complex mouse genetics tools. The objective of this review is to present advances made in our understanding of the mechanisms of lung alveolarization and BPD over the period 1 January 2017-30 June 2019, a period that spans the 50th anniversary of the original clinical description of BPD in preterm infants.
Collapse
Affiliation(s)
- Ettore Lignelli
- Department of Lung Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, member of the German Center for Lung Research, Giessen, Germany
| | - Francesco Palumbo
- Department of Lung Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, member of the German Center for Lung Research, Giessen, Germany
| | - Despoina Myti
- Department of Lung Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, member of the German Center for Lung Research, Giessen, Germany
| | - Rory E Morty
- Department of Lung Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, member of the German Center for Lung Research, Giessen, Germany
| |
Collapse
|