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Khan F, Judge EP, Das JP, White D, Ingram C, Keane MP, Butler MW. Effects of Active Chronic Cigarette-Smoke Exposure on Circulating Fibrocytes. Lung 2024; 202:431-440. [PMID: 38935158 PMCID: PMC11272705 DOI: 10.1007/s00408-024-00720-3] [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: 01/07/2024] [Accepted: 06/12/2024] [Indexed: 06/28/2024]
Abstract
PURPOSE This study aimed to evaluate the hypothesis that active smoking impacts upon mediators and abundance of circulating fibrocyte cells in smoking-related disease characterised by fibrosis. METHODS Flow cytometry and enzyme-linked immunosorbent assays were used to investigate blood from five patient groups: healthy never-smokers, healthy current smokers, stable chronic obstructive pulmonary disease (COPD) active smokers, idiopathic pulmonary fibrosis (IPF) never-smokers, and IPF active smokers. RESULTS A significant inverse dose-response relationship was observed in healthy smokers among cumulative smoking burden (pack-years) and fibrocyte abundance (p = 0.006, r = -0.86). Among serum profibrotic fibrocyte chemokines measured, CCL18 rose significantly alongside fibrocyte numbers in all five subject groups, while having an inverse dose-response relationship with pack-year burden in healthy smokers (p = 0.003, r = -0.89). In IPF, CCL2 rose in direct proportion to fibrocyte abundance irrespective of smoking status but had lower serum levels in those currently smoking (p = < 0.001). For the study population, CXCL12 was decreased in pooled current smokers versus never-smokers (p = 0.03). CONCLUSION The suppressive effect of current, as distinct from former, chronic smoking on circulating fibrocyte abundance in healthy smokers, and modulation of regulatory chemokine levels by active smoking may have implications for future studies of fibrocytes in smoking-related lung diseases as a potential confounding variable.
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Affiliation(s)
- Faheem Khan
- St Vincent's University Hospital, Elm Park, Dublin 4, Ireland
- University College Dublin, Belfield, Dublin 4, Ireland
| | - Eoin P Judge
- St Vincent's University Hospital, Elm Park, Dublin 4, Ireland
| | - Jeeban P Das
- St Vincent's University Hospital, Elm Park, Dublin 4, Ireland
| | - Daniel White
- University College Dublin, Belfield, Dublin 4, Ireland
| | | | - Michael P Keane
- St Vincent's University Hospital, Elm Park, Dublin 4, Ireland
- University College Dublin, Belfield, Dublin 4, Ireland
| | - Marcus W Butler
- St Vincent's University Hospital, Elm Park, Dublin 4, Ireland.
- University College Dublin, Belfield, Dublin 4, Ireland.
- Education & Research Centre, St Vincent's University Hospital, Elm Park, Dublin 4, Ireland.
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2
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Trousil J, Cabral JV, Voukali E, Nováčková J, Pop-Georgievski O, Vacík T, Studený P, Studenovska H, Jirsova K. Electrospun poly(l-lactide- co-dl-lactide) nanofibrous scaffold as substrate for ex vivo limbal epithelial cell cultivation. Heliyon 2024; 10:e30970. [PMID: 38803982 PMCID: PMC11128869 DOI: 10.1016/j.heliyon.2024.e30970] [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: 12/18/2023] [Revised: 03/13/2024] [Accepted: 05/08/2024] [Indexed: 05/29/2024] Open
Abstract
Ultrathin electrospun poly (l-lactide-co-dl-lactide) nanofibrous membranes coated with fibronectin were explored as scaffolds for the ex vivo cultivation of limbal epithelial cells (LECs) for the treatment of limbal stem cell deficiency. The developed scaffolds were compared with the "gold-standard" fibrin gel. The resulting membranes composed of nanofibers possessed a very low thickness of 4 μm and allowed very good optical transparency in the wet state. The fibronectin-coated nanofibrous scaffolds demonstrated LEC expansion and successful cultivation similar to that on fibrin gel. Unlike the regular cobblestone epithelial cell morphology on the fibrin gel, the nanofibrous scaffold presented a mostly irregular epithelial morphology with a shift to a mesenchymal phenotype, as confirmed by the upregulation of profibroblastic genes: ACTA2 (p = 0.023), FBLN1 (p < 0.001), and THY1 (p < 0.001). Both culture conditions revealed comparable expression of stem cell markers, including KLF4, ΔNp63α and ABCG2, emphasizing the promise of polylactide-based nanofibrous membranes for further investigations.
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Affiliation(s)
- Jiří Trousil
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague, Czech Republic
- Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Joao Victor Cabral
- Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Eleni Voukali
- Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Jitka Nováčková
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Ognen Pop-Georgievski
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Tomáš Vacík
- Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Pavel Studený
- Ophthalmology Department, Third Faculty of Medicine, Charles University and University Hospital Kralovske Vinohrady, Prague, Czech Republic
| | - Hana Studenovska
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Katerina Jirsova
- Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
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3
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Bhattacharyya A, Khan R, Lee JY, Tassew G, Oskouian B, Allende ML, Proia RL, Yin X, Ortega JG, Bhattacharya M, Saba JD. Gene therapy with AAV9-SGPL1 in an animal model of lung fibrosis. J Pathol 2024; 263:22-31. [PMID: 38332723 PMCID: PMC10987276 DOI: 10.1002/path.6256] [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: 08/10/2023] [Revised: 11/29/2023] [Accepted: 12/18/2023] [Indexed: 02/10/2024]
Abstract
Idiopathic pulmonary fibrosis (IPF) is a progressive scarring disease of the lung that leads rapidly to respiratory failure. Novel approaches to treatment are urgently needed. The bioactive lipid sphingosine-1-phosphate (S1P) is increased in IPF lungs and promotes proinflammatory and profibrotic TGF-β signaling. Hence, decreasing lung S1P represents a potential therapeutic strategy for IPF. S1P is degraded by the intracellular enzyme S1P lyase (SPL). Here we find that a knock-in mouse with a missense SPL mutation mimicking human disease resulted in reduced SPL activity, increased S1P, increased TGF-β signaling, increased lung fibrosis, and higher mortality after injury compared to wild type (WT). We then tested adeno-associated virus 9 (AAV9)-mediated overexpression of human SGPL1 (AAV-SPL) in mice as a therapeutic modality. Intravenous treatment with AAV-SPL augmented lung SPL activity, attenuated S1P levels within the lungs, and decreased injury-induced fibrosis compared to controls treated with saline or only AAV. We confirmed that AAV-SPL treatment led to higher expression of SPL in the epithelial and fibroblast compartments during bleomycin-induced lung injury. Additionally, AAV-SPL decreased expression of the profibrotic cytokines TNFα and IL1β as well as markers of fibroblast activation, such as fibronectin (Fn1), Tgfb1, Acta2, and collagen genes in the lung. Taken together, our results provide proof of concept for the use of AAV-SPL as a therapeutic strategy for the treatment of IPF. © 2024 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Aritra Bhattacharyya
- Division of Pulmonary, Critical Care, Allergy, and Sleep, Department of Medicine, University of California, San Francisco, CA, USA
- Sandler Asthma Basic Research Center, University of California, San Francisco, San Francisco, CA, USA
| | - Ranjha Khan
- Department of Pediatrics, University of California, San Francisco, CA, USA
| | - Joanna Y. Lee
- Department of Pediatrics, University of California, San Francisco, CA, USA
| | - Gizachew Tassew
- Department of Pediatrics, University of California, San Francisco, CA, USA
| | - Babak Oskouian
- Department of Pediatrics, University of California, San Francisco, CA, USA
| | - Maria L. Allende
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Richard L. Proia
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Xiaoyang Yin
- Division of Pulmonary, Critical Care, Allergy, and Sleep, Department of Medicine, University of California, San Francisco, CA, USA
- Sandler Asthma Basic Research Center, University of California, San Francisco, San Francisco, CA, USA
| | - Javier G. Ortega
- Division of Pulmonary, Critical Care, Allergy, and Sleep, Department of Medicine, University of California, San Francisco, CA, USA
- Sandler Asthma Basic Research Center, University of California, San Francisco, San Francisco, CA, USA
| | - Mallar Bhattacharya
- Division of Pulmonary, Critical Care, Allergy, and Sleep, Department of Medicine, University of California, San Francisco, CA, USA
- Sandler Asthma Basic Research Center, University of California, San Francisco, San Francisco, CA, USA
| | - Julie D. Saba
- Department of Pediatrics, University of California, San Francisco, CA, USA
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Werder RB, Zhou X, Cho MH, Wilson AA. Breathing new life into the study of COPD with genes identified from genome-wide association studies. Eur Respir Rev 2024; 33:240019. [PMID: 38811034 PMCID: PMC11134200 DOI: 10.1183/16000617.0019-2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 02/23/2024] [Indexed: 05/31/2024] Open
Abstract
COPD is a major cause of morbidity and mortality globally. While the significance of environmental exposures in disease pathogenesis is well established, the functional contribution of genetic factors has only in recent years drawn attention. Notably, many genes associated with COPD risk are also linked with lung function. Because reduced lung function precedes COPD onset, this association is consistent with the possibility that derangements leading to COPD could arise during lung development. In this review, we summarise the role of leading genes (HHIP, FAM13A, DSP, AGER and TGFB2) identified by genome-wide association studies in lung development and COPD. Because many COPD genome-wide association study genes are enriched in lung epithelial cells, we focus on the role of these genes in the lung epithelium in development, homeostasis and injury.
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Affiliation(s)
- Rhiannon B Werder
- Murdoch Children's Research Institute, Melbourne, Australia
- Center for Regenerative Medicine of Boston University and Boston Medical Center, Boston, MA, USA
| | - Xiaobo Zhou
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Michael H Cho
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Andrew A Wilson
- Center for Regenerative Medicine of Boston University and Boston Medical Center, Boston, MA, USA
- The Pulmonary Center and Department of Medicine, Boston University School of Medicine, Boston, MA, USA
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5
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Kwon SH, Chung H, Seo JW, Kim HS. Genistein alleviates pulmonary fibrosis by inactivating lung fibroblasts. BMB Rep 2024; 57:143-148. [PMID: 37817434 PMCID: PMC10979345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/11/2023] [Accepted: 09/24/2023] [Indexed: 10/12/2023] Open
Abstract
Pulmonary fibrosis is a serious lung disease that occurs predominantly in men. Genistein is an important natural soybeanderived phytoestrogen that affects various biological functions, such as cell migration and fibrosis. However, the antifibrotic effects of genistein on pulmonary fibrosis are largely unknown. The antifibrotic effects of genistein were evaluated using in vitro and in vivo models of lung fibrosis. Proteomic data were analyzed using nano-LC-ESI-MS/MS. Genistein significantly reduced transforming growth factor (TGF)-β1-induced expression of collagen type I and α-smooth muscle actin (SMA) in MRC-5 cells and primary fibroblasts from patients with idiopathic pulmonary fibrosis (IPF). Genistein also reduced TGF-β1-induced expression of p-Smad2/3 and p-p38 MAPK in fibroblast models. Comprehensive protein analysis confirmed that genistein exerted an anti-fibrotic effect by regulating various molecular mechanisms, such as unfolded protein response, epithelial mesenchymal transition (EMT), mammalian target of rapamycin complex 1 (mTORC1) signaling, cell death, and several metabolic pathways. Genistein was also found to decrease hydroxyproline levels in the lungs of BLM-treated mice. Genistein exerted an anti-fibrotic effect by preventing fibroblast activation, suggesting that genistein could be developed as a pharmacological agent for the prevention and treatment of pulmonary fibrosis. [BMB Reports 2024; 57(3): 143-148].
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Affiliation(s)
- Seung-hyun Kwon
- Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul 05368, Korea
| | - Hyunju Chung
- Core Research Laboratory, Medical Science Research Institute, Kyung Hee University Hospital at Gangdong, Seoul 05278, Korea
| | - Jung-Woo Seo
- Core Research Laboratory, Medical Science Research Institute, Kyung Hee University Hospital at Gangdong, Seoul 05278, Korea
| | - Hak Su Kim
- Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul 05368, Korea
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6
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He H, Ji X, Cao L, Wang Z, Wang X, Li XM, Miao M. Medicine Targeting Epithelial-Mesenchymal Transition to Treat Airway Remodeling and Pulmonary Fibrosis Progression. Can Respir J 2023; 2023:3291957. [PMID: 38074219 PMCID: PMC10701063 DOI: 10.1155/2023/3291957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 09/18/2023] [Accepted: 10/26/2023] [Indexed: 12/18/2023] Open
Abstract
Objective. Dysregulation of epithelial-mesenchymal transition (EMT) in the airway epithelium is associated with airway remodeling and the progression of pulmonary fibrosis. Many treatments have been shown to inhibit airway remodeling and pulmonary fibrosis progression in asthma and chronic obstructive pulmonary disease (COPD) by regulating EMT and have few side effects. This review aimed to describe the development of airway remodeling through the EMT pathway, as well as the potential therapeutic targets in these pathways. Furthermore, this study aimed to review the current research on drugs to treat airway remodeling and their effects on the EMT pathway. Findings. The dysregulation of EMT was associated with airway remodeling in various respiratory diseases. The cytokines released during inflammation may induce EMT and subsequent airway remodeling. Various drugs, including herbal formulations, specific herbal compounds, cytokines, amino acid or protein inhibitors, microRNAs, and vitamins, may suppress airway remodeling by inhibiting EMT-related pathways.
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Affiliation(s)
- Hongjuan He
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Henan, Zhengzhou 450046, China
| | - Xiaoyan Ji
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Henan, Zhengzhou 450046, China
| | - Lihua Cao
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Henan, Zhengzhou 450046, China
| | - Zhenzhen Wang
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Henan, Zhengzhou 450046, China
| | - Xiaoyu Wang
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Henan, Zhengzhou 450046, China
| | - Xiu-Min Li
- Department of Otolaryngology, Microbiology and Immunology, New York Medical College, New York, NY 10595, USA
| | - Mingsan Miao
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Henan, Zhengzhou 450046, China
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7
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Wang Z. Role of transforming growth factor-β in airway remodelling in bronchiolitis obliterans. Growth Factors 2023; 41:192-209. [PMID: 37487145 DOI: 10.1080/08977194.2023.2239356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 07/12/2023] [Indexed: 07/26/2023]
Abstract
Airway remodelling is the main pathological mechanism of bronchiolitis obliterans (BO). Several studies have found that transforming growth factor-β (TGF-β) expression is increased in BO during airway remodelling, where it plays an important role in various biological processes by binding to its receptor complex to activate multiple signalling proteins and pathways. This review examines the role of TGF-β in airway remodelling in BO and its potential as a therapeutic target, highlighting the mechanisms of TGF-β activation and signalling, cellular targets of TGF-β actions, and research progress in TGF-β signalling and TGF-β-mediated processes.
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Affiliation(s)
- Ziwei Wang
- Department of Pediatrics, Beijing Friendship Hospital, Capital Medical University, Beijing, China
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8
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Mottais A, Riberi L, Falco A, Soccal S, Gohy S, De Rose V. Epithelial-Mesenchymal Transition Mechanisms in Chronic Airway Diseases: A Common Process to Target? Int J Mol Sci 2023; 24:12412. [PMID: 37569787 PMCID: PMC10418908 DOI: 10.3390/ijms241512412] [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: 05/15/2023] [Revised: 07/30/2023] [Accepted: 08/01/2023] [Indexed: 08/13/2023] Open
Abstract
Epithelial-to-mesenchymal transition (EMT) is a reversible process, in which epithelial cells lose their epithelial traits and acquire a mesenchymal phenotype. This transformation has been described in different lung diseases, such as lung cancer, interstitial lung diseases, asthma, chronic obstructive pulmonary disease and other muco-obstructive lung diseases, such as cystic fibrosis and non-cystic fibrosis bronchiectasis. The exaggerated chronic inflammation typical of these pulmonary diseases can induce molecular reprogramming with subsequent self-sustaining aberrant and excessive profibrotic tissue repair. Over time this process leads to structural changes with progressive organ dysfunction and lung function impairment. Although having common signalling pathways, specific triggers and regulation mechanisms might be present in each disease. This review aims to describe the various mechanisms associated with fibrotic changes and airway remodelling involved in chronic airway diseases. Having better knowledge of the mechanisms underlying the EMT process may help us to identify specific targets and thus lead to the development of novel therapeutic strategies to prevent or limit the onset of irreversible structural changes.
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Affiliation(s)
- Angélique Mottais
- Pole of Pneumology, ENT, and Dermatology, Institute of Experimental and Clinical Research, Université Catholique de Louvain, 1200 Brussels, Belgium; (A.M.); (S.G.)
| | - Luca Riberi
- Postgraduate School in Respiratory Medicine, University of Torino, 10124 Torino, Italy; (L.R.); (A.F.); (S.S.)
| | - Andrea Falco
- Postgraduate School in Respiratory Medicine, University of Torino, 10124 Torino, Italy; (L.R.); (A.F.); (S.S.)
| | - Simone Soccal
- Postgraduate School in Respiratory Medicine, University of Torino, 10124 Torino, Italy; (L.R.); (A.F.); (S.S.)
| | - Sophie Gohy
- Pole of Pneumology, ENT, and Dermatology, Institute of Experimental and Clinical Research, Université Catholique de Louvain, 1200 Brussels, Belgium; (A.M.); (S.G.)
- Department of Pneumology, Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium
- Cystic Fibrosis Reference Centre, Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium
| | - Virginia De Rose
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy
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Talukdar SN, McGregor B, Osan JK, Hur J, Mehedi M. RSV infection does not induce EMT. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.13.532506. [PMID: 36993657 PMCID: PMC10055011 DOI: 10.1101/2023.03.13.532506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 04/28/2023]
Abstract
Respiratory syncytial virus (RSV) infection does not cause severe disease in most of us despite suffering from multiple RSV infections in our lives. However, infants, young children, older adults, and immunocompromised patients are unfortunately vulnerable to RSV-associated severe diseases. A recent study suggested that RSV infection causes cell expansion, resulting in bronchial wall thickening in vitro. Whether the virus-induced changes in the lung airway resemble epithelial-mesenchymal transition (EMT) is still unknown. Here, we report that RSV does not induce EMT in three different in vitro lung models: the epithelial A549 cell line, primary normal human bronchial epithelial cells, and pseudostratified airway epithelium. We found that RSV increases the cell surface area and perimeter in the infected airway epithelium, which is distinct from the effects of a potent EMT inducer, TGF-β1-driven cell elongation-indicative of cell motility. A genome-wide transcriptome analysis revealed that both RSV and TGF-β1 have distinct modulation patterns of the transcriptome, which suggests that RSV-induced changes are distinct from EMT.
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Affiliation(s)
- Sattya N. Talukdar
- Department of Biomedical Sciences, University of North Dakota School of Medicine & Health Sciences, Grand Forks, North Dakota, United States of America
| | - Brett McGregor
- Department of Biomedical Sciences, University of North Dakota School of Medicine & Health Sciences, Grand Forks, North Dakota, United States of America
| | - Jaspreet K. Osan
- Department of Biomedical Sciences, University of North Dakota School of Medicine & Health Sciences, Grand Forks, North Dakota, United States of America
| | - Junguk Hur
- Department of Biomedical Sciences, University of North Dakota School of Medicine & Health Sciences, Grand Forks, North Dakota, United States of America
| | - Masfique Mehedi
- Department of Biomedical Sciences, University of North Dakota School of Medicine & Health Sciences, Grand Forks, North Dakota, United States of America
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10
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Attenuation of Ventilation-Enhanced Epithelial–Mesenchymal Transition through the Phosphoinositide 3-Kinase-γ in a Murine Bleomycin-Induced Acute Lung Injury Model. Int J Mol Sci 2023; 24:ijms24065538. [PMID: 36982609 PMCID: PMC10053679 DOI: 10.3390/ijms24065538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 03/08/2023] [Accepted: 03/12/2023] [Indexed: 03/16/2023] Open
Abstract
Mechanical ventilation (MV) used in patients with acute lung injury (ALI) induces lung inflammation and causes fibroblast proliferation and excessive collagen deposition—a process termed epithelial–mesenchymal transition (EMT). Phosphoinositide 3-kinase-γ (PI3K-γ) is crucial in modulating EMT during the reparative phase of ALI; however, the mechanisms regulating the interactions among MV, EMT, and PI3K-γ remain unclear. We hypothesized that MV with or without bleomycin treatment would increase EMT through the PI3K-γ pathway. C57BL/6 mice, either wild-type or PI3K-γ-deficient, were exposed to 6 or 30 mL/kg MV for 5 h after receiving 5 mg/kg AS605240 intraperitoneally 5 days after bleomycin administration. We found that, after bleomycin exposure in wild-type mice, high-tidal-volume MV induced substantial increases in inflammatory cytokine production, oxidative loads, Masson’s trichrome staining level, positive staining of α-smooth muscle actin, PI3K-γ expression, and bronchial epithelial apoptosis (p < 0.05). Decreased respiratory function, antioxidants, and staining of the epithelial marker Zonula occludens-1 were also observed (p < 0.05). MV-augmented bleomycin-induced pulmonary fibrogenesis and epithelial apoptosis were attenuated in PI3K-γ-deficient mice, and we found pharmacological inhibition of PI3K-γ activity through AS605240 (p < 0.05). Our data suggest that MV augmented EMT after bleomycin-induced ALI, partially through the PI3K-γ pathway. Therapy targeting PI3K-γ may ameliorate MV-associated EMT.
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11
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Ishida Y, Kuninaka Y, Mukaida N, Kondo T. Immune Mechanisms of Pulmonary Fibrosis with Bleomycin. Int J Mol Sci 2023; 24:ijms24043149. [PMID: 36834561 PMCID: PMC9958859 DOI: 10.3390/ijms24043149] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/27/2023] [Accepted: 02/01/2023] [Indexed: 02/09/2023] Open
Abstract
Fibrosis and structural remodeling of the lung tissue can significantly impair lung function, often with fatal consequences. The etiology of pulmonary fibrosis (PF) is diverse and includes different triggers such as allergens, chemicals, radiation, and environmental particles. However, the cause of idiopathic PF (IPF), one of the most common forms of PF, remains unknown. Experimental models have been developed to study the mechanisms of PF, and the murine bleomycin (BLM) model has received the most attention. Epithelial injury, inflammation, epithelial-mesenchymal transition (EMT), myofibroblast activation, and repeated tissue injury are important initiators of fibrosis. In this review, we examined the common mechanisms of lung wound-healing responses after BLM-induced lung injury as well as the pathogenesis of the most common PF. A three-stage model of wound repair involving injury, inflammation, and repair is outlined. Dysregulation of one or more of these three phases has been reported in many cases of PF. We reviewed the literature investigating PF pathogenesis, and the role of cytokines, chemokines, growth factors, and matrix feeding in an animal model of BLM-induced PF.
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12
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Bolori S, Shegefti S, Baghaei K, Yadegar A, Moon KM, Foster LJ, Nasiri MJ, Dabiri H. The Effects of Helicobacter pylori-Derived Outer Membrane Vesicles on Hepatic Stellate Cell Activation and Liver Fibrosis In Vitro. BIOMED RESEARCH INTERNATIONAL 2023; 2023:4848643. [PMID: 37090196 PMCID: PMC10116224 DOI: 10.1155/2023/4848643] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 11/05/2022] [Accepted: 03/05/2023] [Indexed: 04/25/2023]
Abstract
Introduction Helicobacter pylori is a prevalent pathogenic bacterium that resides in the human stomach. Outer membrane vesicles (OMVs) are known as nanosized cargos released by H. pylori, which have been proposed to have a key role in disease progression, pathogenesis, and modulation of the immune system. There are multiple evidences for the role of H. pylori in extragastroduodenal illnesses especially liver-related disorders. However, the precise mechanism of H. pylori extragastroduodenal pathogenesis still remains unclear. In the current study, we aimed to determine the impact of H. pylori-isolated OMVs on hepatic stellate cell (HSC) activation and expression of liver fibrosis markers. Materials and Methods Five H. pylori clinical strains with different genotype profiles were used. Helicobacter pylori OMVs were isolated using ultracentrifugation and were analyzed by scanning electron microscopy (SEM) and dynamic light scattering (DLS). Liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS) analysis was applied to determine protein components of H. pylori-derived OMVs. Cell viability of LX-2 human hepatic stellate cell line exposed to OMVs was measured by MTT assay. LX-2 cells were treated with OMVs for 24 h. The gene expression of α-SMA, E-cadherin, vimentin, snail, and β-catenin was analyzed using quantitative real-time PCR. The protein expression of α-SMA, as a well-studied profibrotic marker, was evaluated with immunocytochemistry. Results Our results showed that H. pylori strains released round shape nanovesicles ranging from 50 to 500 nm. Totally, 112 various proteins were identified in OMVs by proteomic analysis. The isolated OMVs were negative for both CagA and VacA virulence factors. Treatment of HSCs with H. pylori-derived OMVs significantly increased the expression of fibrosis markers. Conclusions In conclusion, the present study demonstrated that H. pylori-derived OMVs could promote HSC activation and induce the expression of hepatic fibrosis markers. Further research is required to elucidate the definite role of H. pylori-derived OMVs in liver fibrosis and liver-associated disorders.
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Affiliation(s)
- Shahin Bolori
- Microbiology Department, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Saina Shegefti
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Kaveh Baghaei
- Basic and Molecular Epidemiology of Gastrointestinal Disorder Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abbas Yadegar
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Kyung-Mee Moon
- Department of Biochemistry & Molecular Biology, Michael Smith Laboratories, University of British Columbia, Canada
| | - Leonard J. Foster
- Department of Biochemistry & Molecular Biology, Michael Smith Laboratories, University of British Columbia, Canada
| | - Mohammad Javad Nasiri
- Microbiology Department, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hossein Dabiri
- Microbiology Department, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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13
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Mccauley KB, Kukreja K, Jaffe AB, Klein AM. A map of signaling responses in the human airway epithelium. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2022:2022.12.21.521460. [PMID: 36597531 PMCID: PMC9810218 DOI: 10.1101/2022.12.21.521460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Receptor-mediated signaling plays a central role in tissue regeneration, and it is dysregulated in disease. Here, we build a signaling-response map for a model regenerative human tissue: the airway epithelium. We analyzed the effect of 17 receptor-mediated signaling pathways on organotypic cultures to determine changes in abundance and phenotype of all epithelial cell types. This map recapitulates the gamut of known airway epithelial signaling responses to these pathways. It defines convergent states induced by multiple ligands and diverse, ligand-specific responses in basal-cell and secretory-cell metaplasia. We show that loss of canonical differentiation induced by multiple pathways is associated with cell cycle arrest, but that arrest is not sufficient to block differentiation. Using the signaling-response map, we show that a TGFB1-mediated response underlies specific aberrant cells found in multiple lung diseases and identify interferon responses in COVID-19 patient samples. Thus, we offer a framework enabling systematic evaluation of tissue signaling responses.
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Affiliation(s)
- Katherine B Mccauley
- Department of Systems Biology, Harvard Medical School, Boston, MA, USA
- Disease Area X, Respiratory Therapeutic Area, Novartis Institutes for BioMedical Research, Cambridge, MA, USA
| | - Kalki Kukreja
- Department of Systems Biology, Harvard Medical School, Boston, MA, USA
| | - Aron B Jaffe
- Disease Area X, Respiratory Therapeutic Area, Novartis Institutes for BioMedical Research, Cambridge, MA, USA
- Current address: Chroma Medicine, Boston, MA, USA
| | - Allon M Klein
- Department of Systems Biology, Harvard Medical School, Boston, MA, USA
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14
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Padoan E, Ferraresso S, Pegolo S, Barnini C, Castagnaro M, Bargelloni L. Gene Expression Profiles of the Immuno-Transcriptome in Equine Asthma. Animals (Basel) 2022; 13:ani13010004. [PMID: 36611613 PMCID: PMC9817691 DOI: 10.3390/ani13010004] [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: 09/30/2022] [Revised: 12/13/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Mild equine asthma (MEA) and severe equine asthma (SEA) are two of the most frequent equine airway inflammatory diseases, but knowledge about their pathogenesis is limited. The goal of this study was to investigate gene expression differences in the respiratory tract of MEA- and SEA-affected horses and their relationship with clinical signs. METHODS Clinical examination and endoscopy were performed in 8 SEA- and 10 MEA-affected horses and 7 healthy controls. Cytological and microbiological analyses of bronchoalveolar lavage (BAL) fluid were performed. Gene expression profiling of BAL fluid was performed by means of a custom oligo-DNA microarray. RESULTS In both MEA and SEA, genes involved in the genesis, length, and motility of respiratory epithelium cilia were downregulated. In MEA, a significant overexpression for genes encoding inflammatory mediators was observed. In SEA, transcripts involved in bronchoconstriction, apoptosis, and hypoxia pathways were significantly upregulated, while genes involved in the formation of the protective muco-protein film were underexpressed. The SEA group also showed enrichment of gene networks activated during human asthma. CONCLUSIONS The present study provides new insight into equine asthma pathogenesis, representing the first step in transcriptomic analysis to improve diagnostic and therapeutic approaches for this respiratory disease.
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Affiliation(s)
- Elisa Padoan
- Department of Comparative Biomedicine and Food Science, University of Padova, 35020 Legnaro, Italy
| | - Serena Ferraresso
- Department of Comparative Biomedicine and Food Science, University of Padova, 35020 Legnaro, Italy
- Correspondence: ; Tel.: +39-049-8272506
| | - Sara Pegolo
- Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padova, 35020 Legnaro, Italy
| | | | - Massimo Castagnaro
- Department of Comparative Biomedicine and Food Science, University of Padova, 35020 Legnaro, Italy
| | - Luca Bargelloni
- Department of Comparative Biomedicine and Food Science, University of Padova, 35020 Legnaro, Italy
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15
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Liu N, Bowen CM, Shoja MM, Castro de Pereira KL, Dongur LP, Saad A, Russell WK, Broderick TC, Fair JH, Fagg WS. Comparative Analysis of Co-Cultured Amniotic Cell-Conditioned Media with Cell-Free Amniotic Fluid Reveals Differential Effects on Epithelial–Mesenchymal Transition and Myofibroblast Activation. Biomedicines 2022; 10:biomedicines10092189. [PMID: 36140291 PMCID: PMC9495976 DOI: 10.3390/biomedicines10092189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 08/31/2022] [Accepted: 09/01/2022] [Indexed: 11/16/2022] Open
Abstract
Myofibroblast activation is a cellular response elicited by a variety of physiological or pathological insults whereby cells initiate a coordinated response intended to eradicate the insult and then revert back to a basal state. However, an underlying theme in various disease states is persistent myofibroblast activation that fails to resolve. Based on multiple observations, we hypothesized that the secreted factors harvested from co-culturing amniotic stem cells might mimic the anti-inflammatory state that cell-free amniotic fluid (AF) elicits. We optimized an amnion epithelial and amniotic fluid cell co-culture system, and tested this hypothesis in the context of myofibroblast activation. However, we discovered that co-cultured amniotic cell conditioned media (coACCM) and AF have opposing effects on myofibroblast activation: coACCM activates the epithelial–mesenchymal transition (EMT) and stimulates gene expression patterns associated with myofibroblast activation, while AF does the opposite. Intriguingly, extracellular vesicles (EVs) purified from AF are necessary and sufficient to activate EMT and inflammatory gene expression patterns, while the EV-depleted AF potently represses these responses. In summary, these data indicate that coACCM stimulates myofibroblast activation, while AF represses it. We interpret these findings to suggest that coACCM, AF, and fractionated AF represent unique biologics that elicit different cellular responses that are correlated with a wide variety of pathological states, and therefore could have broad utility in the clinic and the lab.
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Affiliation(s)
- Naiyou Liu
- Division of Transplant, Department of Surgery, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Charles M. Bowen
- Division of Transplant, Department of Surgery, University of Texas Medical Branch, Galveston, TX 77555, USA
- John Sealy School of Medicine, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Mohammadali M. Shoja
- Division of Transplant, Department of Surgery, University of Texas Medical Branch, Galveston, TX 77555, USA
| | | | - Laxmi Priya Dongur
- Division of Transplant, Department of Surgery, University of Texas Medical Branch, Galveston, TX 77555, USA
- John Sealy School of Medicine, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Antonio Saad
- Department of Obstetrics and Gynecology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - William K. Russell
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Thomas Christopher Broderick
- Merakris Therapeutics, RTP Frontier, Research Triangle Park, NC 27709, USA
- Golden LEAF Biomanufacturing Training and Education Center, North Carolina State University, Raleigh, NC 27606, USA
| | - Jeffrey H. Fair
- Division of Transplant, Department of Surgery, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - William Samuel Fagg
- Division of Transplant, Department of Surgery, University of Texas Medical Branch, Galveston, TX 77555, USA
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX 77555, USA
- Merakris Therapeutics, RTP Frontier, Research Triangle Park, NC 27709, USA
- Correspondence: ; Tel.: +1-(409)-772-2412; Fax: +1-(409)-747-7364
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16
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Lee SN, Yoon JH. The Role of Proprotein Convertases in Upper Airway Remodeling. Mol Cells 2022; 45:353-361. [PMID: 35611689 PMCID: PMC9200660 DOI: 10.14348/molcells.2022.0019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 02/22/2022] [Accepted: 02/27/2022] [Indexed: 11/27/2022] Open
Abstract
Chronic rhinosinusitis (CRS) is a multifactorial, heterogeneous disease characterized by persistent inflammation of the sinonasal mucosa and tissue remodeling, which can include basal/progenitor cell hyperplasia, goblet cell hyperplasia, squamous cell metaplasia, loss or dysfunction of ciliated cells, and increased matrix deposition. Repeated injuries can stimulate airway epithelial cells to produce inflammatory mediators that activate epithelial cells, immune cells, or the epithelial-mesenchymal trophic unit. This persistent inflammation can consequently induce aberrant tissue remodeling. However, the molecular mechanisms driving disease within the different molecular CRS subtypes remain inadequately characterized. Numerous secreted and cell surface proteins relevant to airway inflammation and remodeling are initially synthesized as inactive precursor proteins, including growth/differentiation factors and their associated receptors, enzymes, adhesion molecules, neuropeptides, and peptide hormones. Therefore, these precursor proteins require post-translational cleavage by proprotein convertases (PCs) to become fully functional. In this review, we summarize the roles of PCs in CRS-associated tissue remodeling and discuss the therapeutic potential of targeting PCs for CRS treatment.
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Affiliation(s)
- Sang-Nam Lee
- The Airway Mucus Institute, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Joo-Heon Yoon
- The Airway Mucus Institute, Yonsei University College of Medicine, Seoul 03722, Korea
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul 03722, Korea
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17
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Kumari S, Singh R. Protective effects of intranasal curcumin on silica-induced lung damage. Cytokine 2022; 157:155949. [PMID: 35764024 DOI: 10.1016/j.cyto.2022.155949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 06/09/2022] [Accepted: 06/18/2022] [Indexed: 11/03/2022]
Abstract
OBJECTIVE Being anti-inflammatory and an antioxidant in nature, curcumin has been studied for its anti-asthmatic effects, but its impact on silicosis has not been investigated before. It is a form of occupational lung illness caused by inhaling crystalline silica. It is particularly common among those who work in construction-related sectors. Therefore, present study has been undertaken to investigate impact of intranasal curcumin on silica induced lung damage in mice model of silicosis. MATERIALS AND METHODS Mice model of silicosis was developed by intranasal silica instillation (2.5 mg/mice) for different durations mainly 7, 14 and 21 days, where the longest duration of silica exposure (21 days) mimics chronic occupational exposure of silica dust leading to silicosis. Curcumin (5 mg/kg,i.n) and /or dexamethasone, a known corticosteroid (10 mg/kg,i.p) was administered an hour prior to silica administration. RESULTS Present study revealed silica induced lung damage in the mice model of silicosis characterized by airway inflammation, collagen deposition and enhanced expression of fibrosis markers (MMP-9, α-SMA, Hydroxyproline), which were significantly reduced in curcumin treatment groups. Inhibitory effects of curcumin were compared with standard drug, dexamethasone, a corticosteroid and was found better in protecting structural alterations in the lung. Damaged and abnormal mitochondria (enlarged and irregular shapes) were observed in silicosis group which were reduced in curcumin and dexamethasone treatment groups as revealed in transmission electron microscopic studies. CONCLUSIONS Present study shows protective effects of intranasal curcumin on silica-induced airway inflammation and structural changes thereby lung damage. Hence, it can be considered as an alternative and complementary medication for silicosis.
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Affiliation(s)
- Sneha Kumari
- Department of Zoology, MMV Unit, Banaras Hindu University, Varanasi 221005, India
| | - Rashmi Singh
- Department of Zoology, MMV Unit, Banaras Hindu University, Varanasi 221005, India.
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18
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Mao Y, Feng H. Vitamin D3 alleviates cigarette smoke extract‑mediated epithelial‑mesenchymal transition and fibrogenesis by upregulating CC16 expression in bronchial epithelial cells. Exp Ther Med 2022; 23:357. [PMID: 35493433 PMCID: PMC9019742 DOI: 10.3892/etm.2022.11284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 10/18/2021] [Indexed: 11/17/2022] Open
Abstract
Vitamin D3 supplementation has been previously reported to inhibit the occurrence and development of chronic obstructive pulmonary disease (COPD). However, the underlying mechanism remains unclear. Epithelial-mesenchymal transition (EMT) and fibrogenesis have been associated with the development of COPD. The aim of the present study was to investigate the potential effects and mechanism of vitamin D3 in an in vitro model of cigarette smoke (CS)-induced EMT and fibrosis, with specific focus on the role of club cell protein 16 (CC16). CS extract (CSE) at different concentrations (5, 10 and 20%) was used to treat 16-HBE cells to induce EMT and fibrogenesis following which they were treated with vitamin D3. Subsequently, the 20% CSE group was selected for further experiments, where 16-HBE cells were divided into the following five groups: The control group; the CSE group; the low-dose vitamin D3 group (250 nM); the medium-dose vitamin D3 group (500 nM); and the high-dose vitamin D3 group (1,000 nM). Western blot analysis was used to detect the protein expression levels of the EMT-related proteins E-cadherin, N-cadherin, Slug and α-SMA, fibrogenesis-related proteins collagen Ⅳ and fibronectin 1, proteins involved in the TGF-β1/SMAD3 signaling pathway and CC16. Immunofluorescence was used to measure the protein expression levels of E-cadherin, N-cadherin and collagen Ⅳ. Specific CC16 knockdown was performed using short hairpin RNA transfection to investigate the role of CC16. The results of the present study found that vitamin D3 could increase the protein expression level of CC16 to inhibit the activation of the TGF-β1/SMAD3 signaling pathway; thereby reducing the 20% increase in CSE-induced EMT- and fibrogenesis-related protein expression levels. Following CC16 knockdown, the inhibitory effects of vitamin D3 on EMT- and fibrogenesis-related protein expression were partially reversed. To conclude, these results suggest that vitamin D3 can inhibit the protein expression levels of EMT- and fibrogenesis-related proteins induced by CSE, at least partially through the function of CC16. These findings are expected to provide novel theoretical foundations and ideas for the pathogenesis and treatment of COPD.
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Affiliation(s)
- Yajun Mao
- Rehabilitation Medicine Department, The First Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310006, P.R. China
| | - Hong Feng
- Respiratory Department, The Fourth Hospital of Baotou City, Baotou, Inner Mongolia Autonomous Region 014030, P.R. China
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19
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Chakraborty A, Mastalerz M, Ansari M, Schiller HB, Staab-Weijnitz CA. Emerging Roles of Airway Epithelial Cells in Idiopathic Pulmonary Fibrosis. Cells 2022; 11:cells11061050. [PMID: 35326501 PMCID: PMC8947093 DOI: 10.3390/cells11061050] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/16/2022] [Accepted: 03/17/2022] [Indexed: 12/24/2022] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a fatal disease with incompletely understood aetiology and limited treatment options. Traditionally, IPF was believed to be mainly caused by repetitive injuries to the alveolar epithelium. Several recent lines of evidence, however, suggest that IPF equally involves an aberrant airway epithelial response, which contributes significantly to disease development and progression. In this review, based on recent clinical, high-resolution imaging, genetic, and single-cell RNA sequencing data, we summarize alterations in airway structure, function, and cell type composition in IPF. We furthermore give a comprehensive overview on the genetic and mechanistic evidence pointing towards an essential role of airway epithelial cells in IPF pathogenesis and describe potentially implicated aberrant epithelial signalling pathways and regulation mechanisms in this context. The collected evidence argues for the investigation of possible therapeutic avenues targeting these processes, which thus represent important future directions of research.
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20
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Lv X, Xu G. Regulatory role of the transforming growth factor-β signaling pathway in the drug resistance of gastrointestinal cancers. World J Gastrointest Oncol 2021; 13:1648-1667. [PMID: 34853641 PMCID: PMC8603464 DOI: 10.4251/wjgo.v13.i11.1648] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/28/2021] [Accepted: 08/18/2021] [Indexed: 02/06/2023] Open
Abstract
Gastrointestinal (GI) cancer, including esophageal, gastric, and colorectal cancer, is one of the most prevalent types of malignant carcinoma and the leading cause of cancer-related deaths. Despite significant advances in therapeutic strategies for GI cancers in recent decades, drug resistance with various mechanisms remains the prevailing cause of therapy failure in GI cancers. Accumulating evidence has demonstrated that the transforming growth factor (TGF)-β signaling pathway has crucial, complex roles in many cellular functions related to drug resistance. This review summarizes current knowledge regarding the role of the TGF-β signaling pathway in the resistance of GI cancers to conventional chemotherapy, targeted therapy, immunotherapy, and traditional medicine. Various processes, including epithelial-mesenchymal transition, cancer stem cell development, tumor microenvironment alteration, and microRNA biogenesis, are proposed as the main mechanisms of TGF-β-mediated drug resistance in GI cancers. Several studies have already indicated the benefit of combining antitumor drugs with agents that suppress the TGF-β signaling pathway, but this approach needs to be verified in additional clinical studies. Moreover, the identification of potential biological markers that can be used to predict the response to TGF-β signaling pathway inhibitors during anticancer treatments will have important clinical implications in the future.
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Affiliation(s)
- Xiaoqun Lv
- Department of Pharmacy, Jinshan Hospital, Fudan University, Shanghai 201508, China
| | - Guoxiong Xu
- Research Center for Clinical Medicine, Jinshan Hospital, Fudan University, Shanghai 201508, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
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21
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Li SX, Li C, Pang XR, Zhang J, Yu GC, Yeo AJ, Lavin MF, Shao H, Jia Q, Peng C. Metformin Attenuates Silica-Induced Pulmonary Fibrosis by Activating Autophagy via the AMPK-mTOR Signaling Pathway. Front Pharmacol 2021; 12:719589. [PMID: 34434111 PMCID: PMC8381252 DOI: 10.3389/fphar.2021.719589] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 07/26/2021] [Indexed: 12/12/2022] Open
Abstract
Long-term exposure to crystalline silica particles leads to silicosis characterized by persistent inflammation and progressive fibrosis in the lung. So far, there is no specific treatment to cure the disease other than supportive care. In this study, we examined the effects of metformin, a prescribed drug for type || diabetes on silicosis and explored the possible mechanisms in an established rat silicosis model in vivo, and an in vitro co-cultured model containing human macrophages cells (THP-1) and human bronchial epithelial cells (HBEC). Our results showed that metformin significantly alleviated the inflammation and fibrosis of lung tissues of rats exposed to silica particles. Metformin significantly reduced silica particle-induced inflammatory cytokines including transforming growth factor-β1 (TGF-β1), tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) in rat lung tissue and HBEC culture supernatant. The protein levels of Vimentin and α-smooth muscle actin (α-SMA) were significantly decreased by metfomin while expression level of E-cadherin (E-Cad) increased. Besides, metformin increased the expression levels of phosphorylated adenosine 5′-monophosphate (AMP)-activated protein kinase (p-AMPK), microtubule-associated protein (MAP) light chain 3B (LC3B) and Beclin1 proteins, and reduced levels of phosphorylated mammalian target of rapamycin (p-mTOR) and p62 proteins in vivo and in vitro. These results suggest that metformin could inhibit silica-induced pulmonary fibrosis by activating autophagy through the AMPK-mTOR pathway.
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Affiliation(s)
- Shu-Xian Li
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Chao Li
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Xin-Ru Pang
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Juan Zhang
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Gong-Chang Yu
- Neck-Shoulder and Lumbocrural Pain Hospital of Shandong First Medical University, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Abrey J Yeo
- University of Queensland Centre for Clinical Research (UQCCR), Brisbane, QLD, Australia
| | - Martin F Lavin
- University of Queensland Centre for Clinical Research (UQCCR), Brisbane, QLD, Australia
| | - Hua Shao
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Qiang Jia
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Cheng Peng
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, Brisbane, QLD, Australia
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22
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Savorani C, Malinverno M, Seccia R, Maderna C, Giannotta M, Terreran L, Mastrapasqua E, Campaner S, Dejana E, Giampietro C. A dual role of YAP in driving TGFβ-mediated endothelial-to-mesenchymal transition. J Cell Sci 2021; 134:271139. [PMID: 34338295 PMCID: PMC8353525 DOI: 10.1242/jcs.251371] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 06/23/2021] [Indexed: 12/12/2022] Open
Abstract
Endothelial-to-mesenchymal transition (EndMT) is the biological process through which endothelial cells transdifferentiate into mesenchymal cells. During embryo development, EndMT regulates endocardial cushion formation via TGFβ/BMP signaling. In adults, EndMT is mainly activated during pathological conditions. Hence, it is necessary to characterize molecular regulators cooperating with TGFβ signaling in driving EndMT, to identify potential novel therapeutic targets to treat these pathologies. Here, we studied YAP, a transcriptional co-regulator involved in several biological processes, including epithelial-to-mesenchymal transition (EMT). As EndMT is the endothelial-specific form of EMT, and YAP (herein referring to YAP1) and TGFβ signaling cross-talk in other contexts, we hypothesized that YAP contributes to EndMT by modulating TGFβ signaling. We demonstrate that YAP is required to trigger TGFβ-induced EndMT response, specifically contributing to SMAD3-driven EndMT early gene transcription. We provide novel evidence that YAP acts as SMAD3 transcriptional co-factor and prevents GSK3β-mediated SMAD3 phosphorylation, thus protecting SMAD3 from degradation. YAP is therefore emerging as a possible candidate target to inhibit pathological TGFβ-induced EndMT at early stages. Summary: A new crucial role for YAP as a co-activator of early pathological TGFβ-mediated endothelial-to-mesenchymal transition program and characterization of the underlying molecular mechanism.
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Affiliation(s)
- Cecilia Savorani
- Institute of Molecular Oncology (IFOM), The Fondazione Italiana per la Ricerca sul Cancro (FIRC) Institute of Molecular Oncology, Milan 20139, Italy
| | - Matteo Malinverno
- Institute of Molecular Oncology (IFOM), The Fondazione Italiana per la Ricerca sul Cancro (FIRC) Institute of Molecular Oncology, Milan 20139, Italy
| | - Roberta Seccia
- Institute of Molecular Oncology (IFOM), The Fondazione Italiana per la Ricerca sul Cancro (FIRC) Institute of Molecular Oncology, Milan 20139, Italy
| | - Claudio Maderna
- Institute of Molecular Oncology (IFOM), The Fondazione Italiana per la Ricerca sul Cancro (FIRC) Institute of Molecular Oncology, Milan 20139, Italy
| | - Monica Giannotta
- Institute of Molecular Oncology (IFOM), The Fondazione Italiana per la Ricerca sul Cancro (FIRC) Institute of Molecular Oncology, Milan 20139, Italy
| | - Linda Terreran
- Institute of Molecular Oncology (IFOM), The Fondazione Italiana per la Ricerca sul Cancro (FIRC) Institute of Molecular Oncology, Milan 20139, Italy
| | - Eleonora Mastrapasqua
- Institute of Molecular Oncology (IFOM), The Fondazione Italiana per la Ricerca sul Cancro (FIRC) Institute of Molecular Oncology, Milan 20139, Italy
| | - Stefano Campaner
- Center for Genomic Science of IIT@SEMM, Fondazione Istituto Italiano di Tecnologia (IIT), Milan 20139, Italy
| | - Elisabetta Dejana
- Institute of Molecular Oncology (IFOM), The Fondazione Italiana per la Ricerca sul Cancro (FIRC) Institute of Molecular Oncology, Milan 20139, Italy.,Department of Immunology, Genetics and Pathology, Vascular Biology, Uppsala University, Uppsala 751 85, Sweden
| | - Costanza Giampietro
- Institute of Molecular Oncology (IFOM), The Fondazione Italiana per la Ricerca sul Cancro (FIRC) Institute of Molecular Oncology, Milan 20139, Italy.,Swiss Federal Laboratories for Materials Science and Technology (EMPA), Dübendorf 8600, Switzerland.,Department of Mechanical and Process Engineering, ETH Zurich, Zurich 8092, Switzerland
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23
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The interplay of DAMPs, TLR4, and proinflammatory cytokines in pulmonary fibrosis. J Mol Med (Berl) 2021; 99:1373-1384. [PMID: 34258628 PMCID: PMC8277227 DOI: 10.1007/s00109-021-02113-y] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 06/29/2021] [Accepted: 07/05/2021] [Indexed: 02/07/2023]
Abstract
Pulmonary fibrosis is a chronic debilitating condition characterized by progressive deposition of connective tissue, leading to a steady restriction of lung elasticity, a decline in lung function, and a median survival of 4.5 years. The leading causes of pulmonary fibrosis are inhalation of foreign particles (such as silicosis and pneumoconiosis), infections (such as post COVID-19), autoimmune diseases (such as systemic autoimmune diseases of the connective tissue), and idiopathic pulmonary fibrosis. The therapeutics currently available for pulmonary fibrosis only modestly slow the progression of the disease. This review is centered on the interplay of damage-associated molecular pattern (DAMP) molecules, Toll-like receptor 4 (TLR4), and inflammatory cytokines (such as TNF-α, IL-1β, and IL-17) as they contribute to the pathogenesis of pulmonary fibrosis, and the possible avenues to develop effective therapeutics that disrupt this interplay.
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24
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Ye Z, Hu Y. TGF‑β1: Gentlemanly orchestrator in idiopathic pulmonary fibrosis (Review). Int J Mol Med 2021; 48:132. [PMID: 34013369 PMCID: PMC8136122 DOI: 10.3892/ijmm.2021.4965] [Citation(s) in RCA: 83] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 04/29/2021] [Indexed: 01/09/2023] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a worldwide disease characterized by the chronic and irreversible decline of lung function. Currently, there is no drug to successfully treat the disease except for lung transplantation. Numerous studies have been devoted to the study of the fibrotic process of IPF and findings showed that transforming growth factor‑β1 (TGF‑β1) plays a central role in the development of IPF. TGF‑β1 promotes the fibrotic process of IPF through various signaling pathways, including the Smad, MAPK, and ERK signaling pathways. There are intersections between these signaling pathways, which provide new targets for researchers to study new drugs. In addition, TGF‑β1 can affect the fibrosis process of IPF by affecting oxidative stress, epigenetics and other aspects. Most of the processes involved in TGF‑β1 promote IPF, but TGF‑β1 can also inhibit it. This review discusses the role of TGF‑β1 in IPF.
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Affiliation(s)
- Zhimin Ye
- Department of Pathology, Basic Medical School, Central South University, Changsha, Hunan 410006, P.R. China
| | - Yongbin Hu
- Department of Pathology, Basic Medical School, Central South University, Changsha, Hunan 410006, P.R. China
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Inhibition of discoidin domain receptors by imatinib prevented pancreatic fibrosis demonstrated in experimental chronic pancreatitis model. Sci Rep 2021; 11:12894. [PMID: 34145346 PMCID: PMC8213731 DOI: 10.1038/s41598-021-92461-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 06/10/2021] [Indexed: 12/23/2022] Open
Abstract
Discoidin domain receptors (DDR1 and DDR2) are the collagen receptors of the family tyrosine kinases, which play significant role in the diseases like inflammation, fibrosis and cancer. Chronic pancreatitis (CP) is a fibro-inflammatory disease in which recurrent pancreatic inflammation leads to pancreatic fibrosis. In the present study, we have investigated the role of DDR1 and DDR2 in CP. The induced expression of DDR1 and DDR2 was observed in primary pancreatic stellate cells (PSCs) and cerulein-induced CP. Subsequently, the protective effects of DDR1/DDR2 inhibitor, imatinib (IMT) were investigated. Pharmacological intervention with IMT effectively downregulated DDR1 and DDR2 expression. Further, IMT treatment reduced pancreatic injury, inflammation, extracellular matrix deposition and PSCs activation along with inhibition of TGF-β1/Smad signaling pathway. Taken together, these results suggest that inhibition of DDR1 and DDR2 controls pancreatic inflammation and fibrosis, which could represent an attractive and promising therapeutic strategy for the treatment of CP.
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Planté-Bordeneuve T, Pilette C, Froidure A. The Epithelial-Immune Crosstalk in Pulmonary Fibrosis. Front Immunol 2021; 12:631235. [PMID: 34093523 PMCID: PMC8170303 DOI: 10.3389/fimmu.2021.631235] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 05/04/2021] [Indexed: 12/12/2022] Open
Abstract
Interactions between the lung epithelium and the immune system involve a tight regulation to prevent inappropriate reactions and have been connected to several pulmonary diseases. Although the distal lung epithelium and local immunity have been implicated in the pathogenesis and disease course of idiopathic pulmonary fibrosis (IPF), consequences of their abnormal interplay remain less well known. Recent data suggests a two-way process, as illustrated by the influence of epithelial-derived periplakin on the immune landscape or the effect of macrophage-derived IL-17B on epithelial cells. Additionally, damage associated molecular patterns (DAMPs), released by damaged or dying (epithelial) cells, are augmented in IPF. Next to “sterile inflammation”, pathogen-associated molecular patterns (PAMPs) are increased in IPF and have been linked with lung fibrosis, while outer membrane vesicles from bacteria are able to influence epithelial-macrophage crosstalk. Finally, the advent of high-throughput technologies such as microbiome-sequencing has allowed for the identification of a disease-specific microbial environment. In this review, we propose to discuss how the interplays between the altered distal airway and alveolar epithelium, the lung microbiome and immune cells may shape a pro-fibrotic environment. More specifically, it will highlight DAMPs-PAMPs pathways and the specificities of the IPF lung microbiome while discussing recent elements suggesting abnormal mucosal immunity in pulmonary fibrosis.
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Affiliation(s)
- Thomas Planté-Bordeneuve
- Pôle de pneumologie, O.R.L. et dermatologie, Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, Bruxelles, Belgium
| | - Charles Pilette
- Pôle de pneumologie, O.R.L. et dermatologie, Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, Bruxelles, Belgium.,Service de pneumologie, Cliniques universitaires Saint-Luc, Bruxelles, Belgium
| | - Antoine Froidure
- Pôle de pneumologie, O.R.L. et dermatologie, Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, Bruxelles, Belgium.,Service de pneumologie, Cliniques universitaires Saint-Luc, Bruxelles, Belgium
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Beneficial impact of cathelicidin on hypersensitivity pneumonitis treatment-In vivo studies. PLoS One 2021; 16:e0251237. [PMID: 33999928 PMCID: PMC8128276 DOI: 10.1371/journal.pone.0251237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 04/22/2021] [Indexed: 02/06/2023] Open
Abstract
Cathelicidin (CRAMP) is a defence peptide with a wide range of biological responses including antimicrobial, immunomodulatory and wound healing. Due to its original properties the usefulness of CRAMP in the treatment of pulmonary fibrosis was assessed in a murine model of hypersensitivity pneumonitis (HP). The studies were conducted on mouse strain C57BL/6J exposed to a saline extract of Pantoea agglomerans cells (HP inducer). Cathelicidin was administered in the form of an aerosol during and after HP development. Changes in the composition of immune cell populations (NK cells, macrophages, lymphocytes: Tc, Th, Treg, B), were monitored in lung tissue by flow cytometry. Extracellular matrix deposition (collagens, hydroxyproline), the concentration of cytokines involved in inflammatory and the fibrosis process (IFNγ, TNFα, TGFβ1, IL1β, IL4, IL5, IL10, IL12α, IL13) were examined in lung homogenates by the ELISA method. Alterations in lung tissue morphology were examined in mouse lung sections stained with haematoxylin and eosin as well as Masson trichrome dyes. The performed studies revealed that cathelicidin did not cause any negative changes in lung morphology/structure, immune cell composition or cytokines production. At the same time, CRAMP attenuated the immune reaction induced by mice chronic exposure to P. agglomerans and inhibited hydroxyproline and collagen deposition in the lung tissue of mice treated with bacteria extract. The beneficial effect of CRAMP on HP treatment was associated with restoring the balance in quantity of immune cells, cytokines production and synthesis of extracellular matrix components. The presented study suggests the usefulness of cathelicidin in preventing lung fibrosis; however, cathelicidin was not able to reverse pathological changes completely.
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Zhao J, Jiang T, Li P, Dai L, Shi G, Jing X, Gao S, Jia L, Wu S, Wang Y, Peng Y, Cheng Z. Tissue factor promotes airway pathological features through epithelial-mesenchymal transition of bronchial epithelial cells in mice with house dust mite-induced asthma. Int Immunopharmacol 2021; 97:107690. [PMID: 33940323 DOI: 10.1016/j.intimp.2021.107690] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 03/30/2021] [Accepted: 04/18/2021] [Indexed: 11/17/2022]
Abstract
It has recently been shown that expression levels of tissue factor (TF) are high in the serum and peripheral blood mononuclear cells of patients with asthma. However, whether TF impacts airway inflammation and remodelling in asthma remains unknown. The aim of this study was to investigate the effect of TF in asthma airway inflammation and remodelling using a house dust mite (HDM)-induced chronic asthma model and human bronchial epithelial (16HBE) cells. A chronic asthma model was constructed in BALB/c mice by the intranasal instillation of HDM. Mice were treated with short hairpin TF (shTF), and airway inflammation and remodelling features of asthma and epithelial-mesenchymal transition (EMT) were assessed. 16HBE cells were induced by transforming growth factor-β1 (TGF-β1) and HDM in the presence or absence of shTF; then, EMT markers and invasion and migration ability were determined. TF expression increased in the lung tissue and 16HBE cells when exposed to HDM. TF downregulation in the lung significantly reduced airway hyperresponsiveness, eosinophil inflammation, the EMT process, and levels of interleukin (IL)-4, IL-6, IL-13, and TGF-β1 in bronchoalveolar lavage fluid of asthmatic mice. Moreover, TF downregulation inhibited migration and incursion and decreased the expression levels of fibronectin 1 and TGF-β1, but increased the expression of E-cadherin in HDM- and TGF-β1-stimulated 16HBE cells. These results demonstrated that TF promoted airway pathological features by enhancing the EMT of bronchial epithelial cells both in vitro and in mice with house dust mite-induced asthma.
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Affiliation(s)
- Junwei Zhao
- Department of Laboratory Medicine, The First Affiliated Hospital of Zhengzhou University, Key Clinical Laboratory of Henan Province, Zhengzhou, He'nan 450052, PR China.
| | - Tianci Jiang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, He'nan 450052, PR China; Henan Key Laboratory for Pharmacology of Liver Diseases, Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, He'nan 450052, PR China
| | - Pengfei Li
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, He'nan 450052, PR China; Henan Key Laboratory for Pharmacology of Liver Diseases, Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, He'nan 450052, PR China
| | - Lingling Dai
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, He'nan 450052, PR China
| | - Guang Shi
- Department of Laboratory Medicine, The First Affiliated Hospital of Zhengzhou University, Key Clinical Laboratory of Henan Province, Zhengzhou, He'nan 450052, PR China
| | - Xiaogang Jing
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, He'nan 450052, PR China
| | - Shuhui Gao
- Department of Laboratory Medicine, The First Affiliated Hospital of Zhengzhou University, Key Clinical Laboratory of Henan Province, Zhengzhou, He'nan 450052, PR China
| | - Liuqun Jia
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, He'nan 450052, PR China
| | - Shujun Wu
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, He'nan 450052, PR China
| | - Yu Wang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, He'nan 450052, PR China
| | - Youmei Peng
- Henan Key Laboratory for Pharmacology of Liver Diseases, Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, He'nan 450052, PR China
| | - Zhe Cheng
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, He'nan 450052, PR China; Henan Key Laboratory for Pharmacology of Liver Diseases, Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, He'nan 450052, PR China.
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Türkeli A, Yilmaz Ö, Karaman M, Kanik ET, Firinci F, İnan S, Yüksel H. Anti-VEGF treatment suppresses remodeling factors and restores epithelial barrier function through the E-cadherin/β-catenin signaling axis in experimental asthma models. Exp Ther Med 2021; 22:689. [PMID: 33986854 PMCID: PMC8112133 DOI: 10.3892/etm.2021.10121] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 01/27/2021] [Indexed: 12/12/2022] Open
Abstract
Besides maintaining a physical barrier with adherens junctional (AJ) and tight junctional proteins, airway epithelial cells have important roles in modulating the inflammatory processes of allergic asthma. E-cadherin and β-catenin are the key AJ proteins that are involved in airway remodeling. Various mediators such as transforming growth factor-β (TGF-β), epidermal growth factor (EGF), fibroblast growth factor (FGF), platelet derived growth factor (PDGF), insulin-like growth factor (IGF), tumor necrosis factor-α (TNF-α) and angiogenic factors, such as vascular endothelial growth factor (VEGF), are released by the airway epithelium in allergic asthma. The signaling pathways activated by these growth factors trigger epithelial-mesenchymal transition (EMT), which contributes to fibrosis and subsequent downregulation of E-cadherin. The present study used a mouse asthma model to investigate the effects of anti-VEGF, anti-TNF and corticosteroid therapies on growth factor and E-cadherin/β-catenin expression. The study used 38 male BALB/c mice, divided into 5 groups. A chronic mouse asthma model was created by treating 4 of the groups with inhaled and intraperitoneal ovalbumin (n= 8 per group). Saline, anti-TNF-α (etanercept), anti-VEGF (bevacizumab) or a corticosteroid (dexamethasone) were applied to each group by intraperitoneal injection. No medication was administered to the control group (n=6). Immunohistochemistry for E-cadherin, β-catenin and growth factors was performed on lung tissues and protein expression levels assessed using H-scores. Statistically significant differences were observed in E-cadherin, β-catenin, EGF, FG, and PFGF (P<0.001 for all) as well as the IGF H-scores between the five groups (P<0.005). Only anti-VEGF treatment caused E-cadherin and β-catenin levels to increase to the level of non-asthmatic control groups (P>0.005). All treatment groups had reduced TGF-β, PDGF and FGF H-scores in comparison with the untreated asthma group (P=0.001). The EGF and IGF levels were not significantly different between the untreated asthmatic and non-asthmatic controls. The results suggested that anti-VEGF and TNF-α inhibition treatments are effective in decreasing growth factors, in a similar manner to conventional corticosteroid treatments. Anti-VEGF and TNF inhibition therapy may be an effective treatment for remodeling in asthma while offering an alternative therapeutic option to steroid protective agents. The data suggested that anti-VEGF treatment offered greater restoration of the epithelial barrier than both anti-TNF-α and corticosteroid treatment.
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Affiliation(s)
- Ahmet Türkeli
- Department of Pediatric Allergy and Immunology, Kütahya Health Science University Medical Faculty, Kütahya 43050, Turkey
| | - Özge Yilmaz
- Department of Pediatric Allergy and Immunology, Celal Bayar University Medical Faculty, Manisa 45030, Turkey
| | - Meral Karaman
- Multidisciplinary Laboratory, Dokuz Eylül University Medical Faculty, Izmir 35210, Turkey
| | - Esra Toprak Kanik
- Department of Pediatric Allergy and Immunology, Celal Bayar University Medical Faculty, Manisa 45030, Turkey
| | - Fatih Firinci
- Department of Pediatric Allergy and Immunology, Dokuz Eylül University Medical Faculty, Izmir 35210, Turkey
| | - Sevinç İnan
- Department of Histology and Embryology, Izmir University of Economics, Medical Faculty, Izmir 35330, Turkey
| | - Hasan Yüksel
- Department of Pediatric Allergy and Immunology, Celal Bayar University Medical Faculty, Manisa 45030, Turkey
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A549 cells contain enlarged mitochondria with independently functional clustered mtDNA nucleoids. PLoS One 2021; 16:e0249047. [PMID: 33765066 PMCID: PMC7993880 DOI: 10.1371/journal.pone.0249047] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 03/10/2021] [Indexed: 11/19/2022] Open
Abstract
Mitochondria are commonly viewed as highly elongated organelles with regularly spaced mtDNA genomes organized as compact nucleoids that generate the local transcripts essential for production of mitochondrial ribosomes and key components of the respiratory chain. In contrast, A549 human lung carcinoma cells frequently contain apparently swollen mitochondria harboring multiple discrete mtDNA nucleoids and RNA processing granules in a contiguous matrix compartment. While this seemingly aberrant mitochondrial morphology is akin to “mito-bulbs” previously described in cells exposed to a variety of genomic stressors, it occurs in A549 cells under typical culture conditions. We provide a detailed confocal and super-resolution microscopic investigation of the incidence of such mito-bulbs in A549 cells. Most mito-bulbs appear stable, engage in active replication and transcription, and maintain respiration but feature an elevated oxidative environment. High concentrations of glucose and/or L-glutamine in growth media promote a greater incidence of mito-bulbs. Furthermore, we demonstrate that treatment of A549 cells with TGFβ suppresses the formation of mito-bulbs while treatment with a specific TGFβ pathway inhibitor substantially increases incidence. This striking heterogeneity of mitochondrial form and function may play an important role in a variety of diseases involving mitochondrial dysfunction.
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Glöckner M, Marwitz S, Rohmann K, Watz H, Nitschkowski D, Rupp J, Dalhoff K, Goldmann T, Drömann D. Haemophilus influenzae causes cellular trans-differentiation in human bronchial epithelia. Innate Immun 2021; 27:251-259. [PMID: 33646896 PMCID: PMC8054152 DOI: 10.1177/1753425921994906] [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] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Non-typeable Haemophilus influenzae (NTHi) is the most common respiratory pathogen in patients with chronic obstructive disease. Limited data is available investigating the impact of NTHi infections on cellular re-differentiation processes in the bronchial mucosa. The aim of this study was to assess the effects of stimulation with NTHi on the bronchial epithelium regarding cellular re-differentiation processes using primary bronchial epithelial cells harvested from infection-free patients undergoing bronchoscopy. The cells were then cultivated using an air-liquid interface and stimulated with NTHi and TGF-β. Markers of epithelial and mesenchymal cells were analyzed using immunofluorescence, Western blot and qRT-PCR. Stimulation with both NTHi and TGF-ß led to a marked increase in the expression of the mesenchymal marker vimentin, while E-cadherin as an epithelial marker maintained a stable expression throughout the experiments. Furthermore, expression of collagen 4 and the matrix-metallopeptidases 2 and 9 were increased after stimulation, while the expression of tissue inhibitors of metallopeptidases was not affected by pathogen stimulation. In this study we show a direct pathogen-induced trans-differentiation of primary bronchial epithelial cells resulting in a co-localization of epithelial and mesenchymal markers and an up-regulation of extracellular matrix components.
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Affiliation(s)
- Michael Glöckner
- Medical Clinic III, University Medical Center Schleswig-Holstein, Germany
| | - Sebastian Marwitz
- Pathology of the University Medical Center Schleswig-Holstein, Campus Lübeck and the Research Center Borstel, Germany.,Airway Research Center North (ARCN), German Center for Lung Research (DZL), Germany
| | - Kristina Rohmann
- Medical Clinic I, University Medical Center Schleswig-Holstein, Germany
| | - Henrik Watz
- Airway Research Center North (ARCN), German Center for Lung Research (DZL), Germany.,Pulmonary Research Institute at Lungenclinic Grosshansdorf, Germany
| | - Dörte Nitschkowski
- Pathology of the University Medical Center Schleswig-Holstein, Campus Lübeck and the Research Center Borstel, Germany.,Airway Research Center North (ARCN), German Center for Lung Research (DZL), Germany
| | - Jan Rupp
- Department of Infectious Diseases and Microbiology, University Medical Center Schleswig-Holstein (UKSH), Germany.,German Center for Infection Research (DZIF), partner site Hamburg-Borstel-Lübeck, Hamburg-Borstel-Lübeck, Germany
| | - Klaus Dalhoff
- Medical Clinic III, University Medical Center Schleswig-Holstein, Germany.,Airway Research Center North (ARCN), German Center for Lung Research (DZL), Germany
| | - Torsten Goldmann
- Pathology of the University Medical Center Schleswig-Holstein, Campus Lübeck and the Research Center Borstel, Germany.,Airway Research Center North (ARCN), German Center for Lung Research (DZL), Germany
| | - Daniel Drömann
- Medical Clinic III, University Medical Center Schleswig-Holstein, Germany.,Airway Research Center North (ARCN), German Center for Lung Research (DZL), Germany
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Wanas H, El Shereef Z, Rashed L, Aboulhoda BE. Ticagrelor Ameliorates Bleomycin-Induced Pulmonary Fibrosis in Rats by Inhibition of TGF-β1/Smad3 and PI3K/AKT/mTOR Pathways. Curr Mol Pharmacol 2021; 15:227-238. [PMID: 33563204 DOI: 10.2174/1874467214666210204212533] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 12/22/2020] [Accepted: 12/23/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Idiopathic pulmonary fibrosis (IPF) is a serious disease with high mortality rate. Activation of transforming growth factor (TGF)-β1 production and signalling is considered the corner stone in the epithelial-mesenchymal transition (EMT) process. EMT plays a central role in development of fibrosis in many organs including the lungs. Activated platelets are an important source of TGF-β1 and play a pivotal role in EMT and fibrosis process. The antiplatelet, ticagrelor was previously found to inhibit the EMT in different types of cancer cells, but its ability to serve as an anti-pulmonary fibrosis (PF) agent was not previously investigated. OBJECTIVE In this study, we aim to investigate the potential ability of ticagrelor to ameliorate bleomycin-induced fibrosis in rats. METHODS PF was induced in rats by intratracheal BLM at a dose of 3 mg/kg. The effect of daily daily 20 mg/kg oral ticagrelor on different histological and biochemical parameters of fibrosis was investigated. RESULTS Our results revealed that ticagrelor can alleviate lung fibrosis. We found that ticagrelor inhibited TGF-β1 production and suppressed Smad3 activation and signaling pathway with subsequent inhibition of Slug and Snail. In addition, ticagrelor antagonized PI3K/AKT/mTOR pathway signaling. Moreover, ticagrelor inhibited the EMT that revealed by its ability to up-regulate the epithelial markers as E-cadherin (E-cad) and to decrease the expression of the mesenchymal markers as vimentin (VIM) and alpha-smooth muscle actin (α-SMA). CONCLUSION Our results suggest that the P2Y12 inhibitor, ticagrelor may have a therapeutic potential in reducing the progression of PF.
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Affiliation(s)
- Hanaa Wanas
- Departments of Medical Pharmacology, Faculty of Medicine, Cairo University, Cairo, . Egypt
| | - Zeinab El Shereef
- Departments of Histopathology, Faculty of Medicine, Cairo University, Cairo, . Egypt
| | - Laila Rashed
- Departments of Biochemistry, Faculty of Medicine, Cairo University, Cairo, . Egypt
| | - Basma Emad Aboulhoda
- Department of Anatomy and Embryology, Faculty of medicine, Cairo University, Cairo, . Egypt
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Jiang Z, Zhang Y, Zhu Y, Li C, Zhou L, Li X, Zhang F, Qiu X, Qu Y. Cathelicidin induces epithelial-mesenchymal transition to promote airway remodeling in smoking-related chronic obstructive pulmonary disease. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:223. [PMID: 33708850 PMCID: PMC7940876 DOI: 10.21037/atm-20-2196] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background Epithelial-mesenchymal transition (EMT) is an important characteristic in the remodeling of airways that occurs in chronic obstructive pulmonary disease (COPD). Cigarette smoke is a potential driving factor of this EMT in COPD. However, the mechanisms by which cigarette smoke induce EMT remain uncertain. Cathelicidin has been implicated as a causal factor of airway inflammation and mucus hypersecretion in smoking-related COPD. This study aimed to investigate whether cathelicidin induces EMT to promote airway remodeling in this disease. Methods Human lung tissue was collected from smokers with COPD and smokers without COPD. The EMT markers E-cadherin and vimentin were examined by immunohistochemistry. Mouse models of COPD were established by taking mice with airway cathelin-related antimicrobial peptide (CRAMP), the murine homologue of cathelicidin, either upregulated or downregulated by intranasal introduction of lentiviral vectors and then exposing them to cigarette smoke. E-cadherin and vimentin expression in the airways of the model mice was examined using immunofluorescence. Tumor necrosis factor alpha (TNF-α) converting enzyme (TACE), transforming growth factor alpha (TGF-α), and epidermal growth factor receptor (EGFR) expression was analyzed by Western blot. Additionally, NCI-H292 human airway epithelial cells, both with and without cathelicidin downregulation, were stimulated with cigarette smoke extract (CSE) and LL-37 synthetic peptide, a bioactive fragment of cathelicidin. This was done to confirm that the TACE/TGF-α/EGFR signaling pathway is activated in humans exposed to cigarette smoke. Results Significant EMT was found in the small airways of smokers both with and without COPD, as well as in the airways of COPD model mice. Downregulation of CRAMP in COPD mice, however, ameliorated airway EMT induced by cigarette smoke. Conversely, upregulation of CRAMP enhanced airway EMT in vivo; TACE, TGF-α, and EGFR were found to be involved in this process. In vitro, EMT induced by CSE and LL-37 was inhibited by blocking TACE, TGF-α, and EGFR expression. Conclusions Cathelicidin promotes airway EMT by activating the TACE/TGF-α/EGFR signaling pathway. This mediates smoking-induced airway remodeling in the pathogenesis of COPD.
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Affiliation(s)
- Zhiming Jiang
- Department of Pulmonary and Critical Care Medicine, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Department of Pulmonary and Critical Care Medicine, Shandong Qianfoshan Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Department of Pulmonary and Critical Care Medicine, the First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Yuke Zhang
- Department of Pulmonary and Critical Care Medicine, the First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Yibing Zhu
- Medical Research and Biometrics Center, National Center of Cardiovascular Disease, Fuwai Hospital, Peking Union Medical College, Beijing, China
| | - Chong Li
- Department of Pulmonary and Critical Care Medicine, the First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Lei Zhou
- Department of Pulmonary and Critical Care Medicine, the First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Xiaolin Li
- Department of Pulmonary and Critical Care Medicine, the First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Fuxiang Zhang
- Department of Pulmonary and Critical Care Medicine, the First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Xianming Qiu
- Department of Pulmonary and Critical Care Medicine, the First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Yiqing Qu
- Department of Pulmonary and Critical Care Medicine, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
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Omote N, Sakamoto K, Li Q, Schupp JC, Adams T, Ahangari F, Chioccioli M, DeIuliis G, Hashimoto N, Hasegawa Y, Kaminski N. Long noncoding RNA TINCR is a novel regulator of human bronchial epithelial cell differentiation state. Physiol Rep 2021; 9:e14727. [PMID: 33527707 PMCID: PMC7851438 DOI: 10.14814/phy2.14727] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 11/29/2020] [Accepted: 12/29/2020] [Indexed: 11/24/2022] Open
Abstract
Long-noncoding RNAs (lncRNAs) have numerous biological functions controlling cell differentiation and tissue development. The knowledge about the role of lncRNAs in human lungs remains limited. Here we found the regulatory role of the terminal differentiation-induced lncRNA (TINCR) in bronchial cell differentiation. RNA in situ hybridization revealed that TINCR was mainly expressed in bronchial epithelial cells in normal human lung. We performed RNA sequencing analysis of normal human bronchial epithelial cells (NHBECs) with or without TINCR inhibition and found the differential expression of 603 genes, which were enriched for cell adhesion and migration, wound healing, extracellular matrix organization, tissue development and differentiation. To investigate the role of TINCR in the differentiation of NHBECs, we employed air-liquid interface culture and 3D organoid formation assay. TINCR was upregulated during differentiation, loss of TINCR significantly induced an early basal-like cell phenotype (TP63) and a ciliated cell differentiation (FOXJ1) in late phase and TINCR overexpression suppressed basal cell phenotype and the differentiation toward to ciliated cells. Critical regulators of differentiation such as SOX2 and NOTCH genes (NOTCH1, HES1, and JAG1) were significantly upregulated by TINCR inhibition and downregulated by TINCR overexpression. RNA immunoprecipitation assay revealed that TINCR was required for the direct bindings of Staufen1 protein to SOX2, HES1, and JAG1 mRNA. Loss of Staufen1 induced TP63, SOX2, NOTCH1, HES1, and JAG1 mRNA expressions, which TINCR overexpression suppressed partially. In conclusion, TINCR is a novel regular of bronchial cell differentiation, affecting downstream regulators such as SOX2 and NOTCH genes, potentially in coordination with Staufen1.
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Affiliation(s)
- Norihito Omote
- Pulmonary, Critical Care and Sleep Medicine SectionDepartment of Internal MedicineYale University School of MedicineNew HavenCTUSA
| | - Koji Sakamoto
- Department of Respiratory MedicineNagoya University Graduate School of MedicineNagoyaJapan
| | - Qin Li
- Pulmonary, Critical Care and Sleep Medicine SectionDepartment of Internal MedicineYale University School of MedicineNew HavenCTUSA
| | - Jonas C. Schupp
- Pulmonary, Critical Care and Sleep Medicine SectionDepartment of Internal MedicineYale University School of MedicineNew HavenCTUSA
| | - Taylor Adams
- Pulmonary, Critical Care and Sleep Medicine SectionDepartment of Internal MedicineYale University School of MedicineNew HavenCTUSA
| | - Farida Ahangari
- Pulmonary, Critical Care and Sleep Medicine SectionDepartment of Internal MedicineYale University School of MedicineNew HavenCTUSA
| | - Maurizio Chioccioli
- Pulmonary, Critical Care and Sleep Medicine SectionDepartment of Internal MedicineYale University School of MedicineNew HavenCTUSA
| | - Giuseppe DeIuliis
- Pulmonary, Critical Care and Sleep Medicine SectionDepartment of Internal MedicineYale University School of MedicineNew HavenCTUSA
| | - Naozumi Hashimoto
- Department of Respiratory MedicineNagoya University Graduate School of MedicineNagoyaJapan
| | - Yoshinori Hasegawa
- Department of Respiratory MedicineNagoya University Graduate School of MedicineNagoyaJapan
- Department of Respiratory MedicineNational Hospital Organization Nagoya Medical CenterNagoyaJapan
| | - Naftali Kaminski
- Pulmonary, Critical Care and Sleep Medicine SectionDepartment of Internal MedicineYale University School of MedicineNew HavenCTUSA
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Anderson ED, Alishahedani ME, Myles IA. Epithelial-Mesenchymal Transition in Atopy: A Mini-Review. FRONTIERS IN ALLERGY 2020; 1. [PMID: 34308414 PMCID: PMC8301597 DOI: 10.3389/falgy.2020.628381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Atopic diseases, particularly atopic dermatitis (AD), asthma, and allergic rhinitis (AR) share a common pathogenesis of inflammation and barrier dysfunction. Epithelial to mesenchymal transition (EMT) is a process where epithelial cells take on a migratory mesenchymal phenotype and is essential for normal tissue repair and signal through multiple inflammatory pathways. However, while links between EMT and both asthma and AR have been demonstrated, as we outline in this mini-review, the literature investigating AD and EMT is far less well-elucidated. Furthermore, current studies on EMT and atopy are mostly animal models or ex vivo studies on cell cultures or tissue biopsies. The literature covered in this mini-review on EMT-related barrier dysfunction as a contributor to AD as well as the related (perhaps resultant) atopic diseases indicates a potential for therapeutic targeting and carry treatment implications for topical steroid use and environmental exposure assessments. Further research, particularly in vivo studies, may greatly advance the field and translate into benefit for patients and families.
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Affiliation(s)
- Erik D Anderson
- Epithelial Therapeutics Unit, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, MD, United States
| | - Mohammadali E Alishahedani
- Epithelial Therapeutics Unit, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, MD, United States
| | - Ian A Myles
- Epithelial Therapeutics Unit, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, MD, United States
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Kim HS, Yoo HJ, Lee KM, Song HE, Kim SJ, Lee JO, Hwang JJ, Song JW. Stearic acid attenuates profibrotic signalling in idiopathic pulmonary fibrosis. Respirology 2020; 26:255-263. [PMID: 33025706 DOI: 10.1111/resp.13949] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 08/22/2020] [Accepted: 09/07/2020] [Indexed: 12/28/2022]
Abstract
BACKGROUND AND OBJECTIVE Lipid metabolism dysregulation has been implicated in the pathogenesis of IPF; however, the roles of most lipid metabolites in lung fibrosis remain unexplored. Therefore, we aimed to identify changes in lipid metabolites in the lung tissues of IPF patients and determine their roles in pulmonary fibrosis. METHODS Free fatty acids in the lung tissues of IPF patients and controls were quantified using a metabolomic approach. The roles of free fatty acids in fibroblasts or epithelial cells treated with TGF-β1 were evaluated using fibrotic markers. The antifibrotic role of stearic acid was also assessed in a bleomycin-induced lung fibrosis mouse model. Protein levels in cell lysates or tissues were measured by western blotting. RESULTS The levels of stearic acid were lower in IPF lung tissues than in control lung tissues. Stearic acid significantly reduced TGF-β1-induced α-SMA and collagen type 1 expression in MRC-5 cells. Furthermore, stearic acid decreased the levels of p-Smad2/3 and ROS in MRC-5 cells treated with TGF-β1 and disrupted TGF-β1-induced EMT in Beas-2B cells. Stearic acid reduced the levels of bleomycin-induced hydroxyproline in a mouse model. CONCLUSION Changes in the free fatty acid profile, including low levels of stearic acid, were observed in IPF patients. Stearic acid may exert antifibrotic activity by regulating profibrotic signalling.
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Affiliation(s)
- Hak-Su Kim
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.,Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul, Republic of Korea
| | - Hyun Ju Yoo
- Department of Convergence Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Kwang Min Lee
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Ha Eun Song
- Department of Convergence Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Su Jung Kim
- Department of Convergence Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jae Ok Lee
- Department of Convergence Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jung Jin Hwang
- Department of Convergence Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jin Woo Song
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
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Ren X, Han L, Li Y, Zhao H, Zhang Z, Zhuang Y, Zhong M, Wang Q, Ma W, Wang Y. Isorhamnetin attenuates TNF-α-induced inflammation, proliferation, and migration in human bronchial epithelial cells via MAPK and NF-κB pathways. Anat Rec (Hoboken) 2020; 304:901-913. [PMID: 32865318 DOI: 10.1002/ar.24506] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 06/09/2020] [Accepted: 06/19/2020] [Indexed: 12/20/2022]
Abstract
Isorhamnetin has distinct anti-inflammatory activity and inhibits cell proliferation and migration. These effects are also involved in the pathogenesis of asthma. However, the effect of isorhamnetin on bronchial epithelial cells in patients with asthma has not been examined. Cells of human bronchial epithelial cell line BEAS-2B were cultured with isorhamnetin and tumor necrosis factor (TNF)-α. The effects of isorhamnetin on BEAS-2B cell viability were assessed using CCK8 assay. The EdU (5-ethynyl-2'-deoxyuridine) cell proliferation assay was performed to assess cell proliferation. BEAS-2B cell migration was measured using Transwell and wound healing assays. Real-time PCR and enzyme-linked immunosorbent assay were conducted to measure the expression of pro-inflammatory cytokines. Protein expression levels were determined by western blotting. Immunofluorescence was used to detect nuclear translocation of nuclear factor kappa B (NF-κB). We found that isorhamnetin at 20 and 40 μM reduced the proliferation of BEAS-2B cells induced by TNF-α. Isorhamnetin significantly decreased the expression of interleukin (IL)-1β, IL-6, IL-8, and C-X-C motif chemokine ligand 10 in BEAS-2B cells induced by TNF-α. Additionally, 10 μM isorhamnetin effectively reduced cell migration induced by TNF-α. Treatment with isorhamnetin inhibited the phosphorylation of mitogen-activated protein kinase (MAPK) and NF-κB pathways induced by TNF-α. In summary, isorhamnetin inhibited the inflammation, proliferation, and migration of BEAS-2B cells by regulating the MAPK and NF-κB signaling pathways and is a drug candidate for asthma.
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Affiliation(s)
- Xiaojie Ren
- The First Clinical School, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China.,Department of Anaesthesiology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Longyin Han
- The First Clinical School, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Yongxing Li
- The First Clinical School, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China.,Department of Anaesthesiology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Huanyi Zhao
- The First Clinical School, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China.,Department of Anaesthesiology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Ziyin Zhang
- The First Clinical School, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China.,Department of Anaesthesiology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Yuerong Zhuang
- The First Clinical School, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China.,Department of Anaesthesiology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Ming Zhong
- The First Clinical School, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China.,Department of Anaesthesiology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Qiang Wang
- Department of Encephalology, Yangjiang People's Hospital, Yangjiang, Guangdong, China
| | - Wuhua Ma
- The First Clinical School, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China.,Department of Anaesthesiology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Yong Wang
- The First Clinical School, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China.,Department of Anaesthesiology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
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38
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El-Baz LMF, Shoukry NM, Hafez HS, Guzy RD, Salem ML. Fibroblast Growth Factor 2 Augments Transforming Growth Factor Beta 1 Induced Epithelial-mesenchymal Transition in Lung Cell Culture Model. IRANIAN JOURNAL OF ALLERGY, ASTHMA, AND IMMUNOLOGY 2020; 19:348-361. [PMID: 33463102 PMCID: PMC8366022 DOI: 10.18502/ijaai.v19i4.4110] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Accepted: 05/27/2020] [Indexed: 02/05/2023]
Abstract
Impaired lung epithelial cell regeneration following injury may contribute to the development of pulmonary fibrosis. Epithelial-mesenchymal transition (EMT) is a critical event in embryonic development, wound healing following injury, and even cancer progression. Previous studies have shown that the combination of transforming growth factor beta-1 (TGFβ1) and fibroblast growth factor 2 (FGF2) induces EMT during cancer metastasis. However, this synergy remains to be elucidated in inducing EMT associated with wound healing after injury. We set out this study to determine the effect of fibroblast growth factor 2 (FGF2) on TGFβ1-induced EMT in the human lung epithelium. BEAS-2B and A549 cells were treated with TGFβ1, FGF2, or both. EMT phenotype was investigated morphologically and by measuring mRNA expression levels; using quantitative real-time PCR. E-cadherin expression was assayed by western blot and immunofluorescence staining. Cell migration was confirmed using a wound-healing assay. TGFβ1 induced a morphological change and a significant increase in cell migration of BEAS-2B cells. TGFβ1 significantly reduced E-cadherin (CDH1) mRNA expression and markedly induced expression of N-cadherin (CDH2), tenascin C (TNC), fibronectin (FN), actin alpha 2 (ACTA2), and collagen I (COL1A1). While FGF2 alone did not significantly alter EMT gene expression, it enhanced TGFβ1-induced suppression of CDH1 and upregulation of ACTA2, but not TNC, FN, and CDH2. FGF2 significantly inhibited TGFβ1-induced COL1A1 expression. Furthermore, FGF2 maintained TGFβ1-induced morphologic changes and increased the migration of TGFβ1-treated cells. This study suggests a synergistic effect between TGFβ1 and FGF2 in inducing EMT in lung epithelial cells, which may play an important role in wound healing and tissue repair after injury.
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Affiliation(s)
- Lamis M F El-Baz
- Department of Medicine, Section of Pulmonary and Critical Care Medicine, University of Chicago, Chicago, Illinois, USA AND Department of Zoology, Faculty of Science, Suez University, Suez, Egypt.
| | - Nahla M Shoukry
- Department of Zoology, Faculty of Science, Suez University, Suez, Egypt.
| | - Hani S Hafez
- Department of Zoology, Faculty of Science, Suez University, Suez, Egypt.
| | - Robert D Guzy
- Department of Medicine, Section of Pulmonary and Critical Care Medicine, University of Chicago, Chicago, Illinois, USA.
| | - Mohamed Labib Salem
- Department of Immunology and Biotechnology, Faculty of Science, Center of Excellence in Cancer Research, Tanta University, Tanta, Egypt.
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Kuma YI, Hosomichi J, Maeda H, Oishi S, Usumi-Fujita R, Shimizu Y, Kaneko S, Suzuki JI, Yoshida KI, Ono T. Intermittent hypoxia induces turbinate mucosal hypertrophy via upregulating the gene expression related to inflammation and EMT in rats. Sleep Breath 2020; 25:677-684. [PMID: 32766939 DOI: 10.1007/s11325-020-02162-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 07/02/2020] [Accepted: 08/01/2020] [Indexed: 12/12/2022]
Abstract
PURPOSE Chronic intermittent hypoxia (IH) plays a pivotal role in the consequences of obstructive sleep apnea (OSA). It has been demonstrated that IH impairs nasomaxillary complex growth to reduce nasal airway cavity size in rodent models. Although turbinate dysfunction with inflammatory mucosal hypertrophy is related to OSA, the role of IH in turbinate hypertrophy with inflammation-driven fibrosis is unknown. Here, we aimed to clarify the pathogenesis of inflammatory mucosal hypertrophy and epithelial-mesenchymal transition (EMT) in the nasal turbinate under IH. METHODS Seven-week-old male Sprague-Dawley rats were exposed to IH (4% O2 to 21% O2 with 0% CO2) at a rate of 20 cycles/h. RESULTS Hypertrophy of the turbinate mucosa occurred after 3 weeks, with the turbinate mucosa of the experimental group becoming significantly thicker than in the control group. Immunostaining showed that IH increased the expression of TGFβ and N-cadherin and decreased E-cadherin expression in the turbinate mucosa. Quantitative PCR analysis demonstrated that IH enhanced the expression of not only the inflammatory markers Tnf-a, Il-1b, and Nos2 but also the EMT markers Tgf-b1, Col1a1, and Postn. CONCLUSIONS Collectively, these results suggest that IH induced turbinate hypertrophy via upregulation of gene expression related to inflammation and EMT in the nasal mucosa.
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Affiliation(s)
- Yo-Ichiro Kuma
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, 113-8549, Japan
| | - Jun Hosomichi
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, 113-8549, Japan.
| | - Hideyuki Maeda
- Department of Forensic Medicine, Graduate School of Medicine, Tokyo Medical University, Tokyo, 160-8402, Japan
| | - Shuji Oishi
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, 113-8549, Japan
| | - Risa Usumi-Fujita
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, 113-8549, Japan
| | - Yasuhiro Shimizu
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, 113-8549, Japan
| | - Sawa Kaneko
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, 113-8549, Japan
| | - Jun-Ichi Suzuki
- Department of Advanced Clinical Science and Therapeutics, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan
| | - Ken-Ichi Yoshida
- Department of Forensic Medicine, Graduate School of Medicine, Tokyo Medical University, Tokyo, 160-8402, Japan
| | - Takashi Ono
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, 113-8549, Japan
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40
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Ladak SS, Roebuck E, Powell J, Fisher AJ, Ward C, Ali S. The Role of miR-200b-3p in Modulating TGF-β1-induced Injury in Human Bronchial Epithelial Cells. Transplantation 2020; 103:2275-2286. [PMID: 31283671 DOI: 10.1097/tp.0000000000002845] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Dysregulation of microRNAs (miRNAs) has been implicated in airway diseases where transforming growth factor-β (TGF-β)-induced epithelial-mesenchymal transition (EMT) may contribute to pathophysiology. Our study investigated the role of miRNA-200b in TGF-β1-induced EMT in human bronchial epithelial cells. METHODS NanoString nCounter miRNA assay was used to profile miRNA in control versus TGF-β1 (1, 4, and 24 h) stimulated BEAS-2B cells. Immortalized primary bronchial epithelial cell line (BEAS-2B cells), human primary bronchial epithelial cells (PBECs), and PBECs derived post-lung transplant were transfected with miR-200b-3p mimics and EMT marker expression was examined at RNA and protein level. miRNA target studies were performed and validated using computational tools and luciferase assay. In situ hybridization was done on normal lung tissue to localize miR-200b-3p in airway epithelium. RESULTS miR-200b-3p was downregulated post-TGF-β1 treatment compared with control in BEAS-2B. miR-200b-3p mimic transfection before TGF-β1 stimulation maintained epithelial marker expression and downregulated mesenchymal cell markers at RNA and protein level in BEAS-2B cells and PBECs. Furthermore, miR-200b-3p mimics reversed established TGF-β1-induced EMT in BEAS-2B cells. miR-200b-3p targets, ZNF532, and ZEB2 were validated as direct targets using luciferase assay. miR-200b-3p mimics suppress TGF-β1-induced EMT via inhibition of ZNF532 and ZEB2. In situ hybridization showed that miR-200b-3p is expressed in the normal lung epithelium. Additionally, miR-200b-3p mimics inhibit EMT in the presence of TGF-β1 in PBECs derived from lung allograft. CONCLUSIONS We provide proof of concept that miR-200b-3p protects airway epithelial cells from EMT. Manipulating miR-200b-3p expression may represent a novel therapeutic modulator in airway pathophysiology.
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Affiliation(s)
- Shameem S Ladak
- Institute of Cellular Medicine, Medical School, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Eliott Roebuck
- Institute of Cellular Medicine, Medical School, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Jason Powell
- Institute of Cellular Medicine, Medical School, Newcastle University, Newcastle upon Tyne, United Kingdom.,Department of Otolaryngology, Head and Neck Surgery, Freeman Hospital, Newcastle upon Tyne, United Kingdom
| | - Andrew J Fisher
- Institute of Cellular Medicine, Medical School, Newcastle University, Newcastle upon Tyne, United Kingdom.,Institute of Transplantation, Newcastle Upon Tyne Hospitals, Newcastle upon Tyne, United Kingdom
| | - Chris Ward
- Institute of Cellular Medicine, Medical School, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Simi Ali
- Institute of Cellular Medicine, Medical School, Newcastle University, Newcastle upon Tyne, United Kingdom
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Chao X, Yi L, Lan LL, Wei HY, Wei D. Long-term PM 2.5 exposure increases the risk of non-small cell lung cancer (NSCLC) progression by enhancing interleukin-17a (IL-17a)-regulated proliferation and metastasis. Aging (Albany NY) 2020; 12:11579-11602. [PMID: 32554855 PMCID: PMC7343463 DOI: 10.18632/aging.103319] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 04/28/2020] [Indexed: 05/03/2023]
Abstract
PM2.5 is a class of airborne particles and droplets with sustained high levels in many developing countries. Epidemiological studies have indicated that PM2.5 is closely associated with the increased morbidity and mortality of lung cancer in the world. Unfortunately, the effects of PM2.5 on lung cancer are largely unknown. In the present study, we attempted to explore the role of PM2.5 in the etiology of NSCLC. Here, we found that long-term PM2.5 exposure led to significant pulmonary injury. Epithelial-mesenchymal transition (EMT) and cancer stem cells (CSC) properties were highly induced by PM2.5 exposure. EMT was evidenced by the significant up-regulation of MMP2, MMP9, TGF-β1, α-SMA, Fibronectin and Vimentin. Lung cancer progression was associated with the increased expression of Kras, c-Myc, breast cancer resistance protein BCRP (ABCG2), OCT4, SOX2 and Aldh1a1, but the decreased expression of p53 and PTEN. Importantly, mice with IL-17a knockout (IL-17a-/-) showed significantly alleviated lung injury and CSC properties following PM2.5 exposure. Also, IL-17a-/--attenuated tumor growth was recovered in PM2.5-exposed mice injected with recombinant mouse IL-17a, accompanied with significantly restored lung metastasis. Taken together, these data revealed that PM2.5 could promote the progression of lung cancer by enhancing the proliferation and metastasis through IL-17a signaling.
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Affiliation(s)
- Xie Chao
- Department of Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, Shandong Province, P.R. China
| | - Liu Yi
- Centers of Disease Control and Prevention of Shandong Province, Jinan 250014, Shandong Province, P.R. China
| | - Li Lan Lan
- Affiliated Hospital of Binzhou Medical College, Binzhou 256603, Shandong Province, P.R. China
| | - Han Yun Wei
- Department of Oncology, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Shihuan Province, P.R. China
| | - Dong Wei
- Department of Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, Shandong Province, P.R. China
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Ihara H, Mitsuishi Y, Kato M, Takahashi F, Tajima K, Hayashi T, Hidayat M, Winardi W, Wirawan A, Hayakawa D, Kanamori K, Matsumoto N, Yae T, Sato T, Sasaki S, Takamochi K, Suehara Y, Ogura D, Niwa SI, Suzuki K, Takahashi K. Nintedanib inhibits epithelial-mesenchymal transition in A549 alveolar epithelial cells through regulation of the TGF-β/Smad pathway. Respir Investig 2020; 58:275-284. [PMID: 32359980 DOI: 10.1016/j.resinv.2020.01.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 01/07/2020] [Accepted: 01/21/2020] [Indexed: 10/24/2022]
Abstract
BACKGROUND Idiopathic pulmonary fibrosis (IPF) is a progressive fibrotic lung disorder. Recent studies have suggested that epithelial-mesenchymal transition (EMT) of alveolar epithelial cells influences development of pulmonary fibrosis, which is mediated by transforming growth factor β (TGF-β). Tumor necrosis factor α (TNF-α), an important proinflammatory cytokine in IPF, has been shown to enhance TGF-β-induced EMT. Nintedanib, a multiple tyrosine kinase inhibitor that is currently used to treat IPF, has been shown to suppress EMT in various cancer cell lines. However, the mechanism of EMT inhibition by nintedanib and its effect on TGF-β and TNF-α signaling pathways in alveolar epithelial cells have not been fully elucidated. METHODS A549 alveolar epithelial cells were stimulated with TGF-β2 and TNF-α, and the effects of nintedanib on global gene expression were evaluated using microarray analysis. Furthermore, Smad2/3 phosphorylation was assessed using western blotting. RESULTS We found that in A549 cells, TGF-β2 and TNF-α treatment induces EMT, which was inhibited by nintedanib. Gene ontology analysis showed that nintedanib significantly attenuates the gene expression of EMT-related cellular pathways and the TGF-β signaling pathway, but not in the TNF-α-mediated signaling pathway. Furthermore, hierarchical cluster analysis revealed that EMT-related genes were attenuated in nintedanib-treated cells. Additionally, nintedanib was found to markedly suppress phosphorylation of Smad2/3. CONCLUSION Nintedanib inhibits EMT by mediating EMT-related gene expression and the TGF-β/Smad pathway in A549 alveolar epithelial cells.
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Affiliation(s)
- Hiroaki Ihara
- Department of Respiratory Medicine, Juntendo University, Graduate School of Medicine, Tokyo, Japan; Research Institute for Diseases of Old Ages, Juntendo University, Graduate School of Medicine, Tokyo, Japan.
| | - Yoichiro Mitsuishi
- Department of Respiratory Medicine, Juntendo University, Graduate School of Medicine, Tokyo, Japan; Research Institute for Diseases of Old Ages, Juntendo University, Graduate School of Medicine, Tokyo, Japan
| | - Motoyasu Kato
- Department of Respiratory Medicine, Juntendo University, Graduate School of Medicine, Tokyo, Japan; Research Institute for Diseases of Old Ages, Juntendo University, Graduate School of Medicine, Tokyo, Japan
| | - Fumiyuki Takahashi
- Department of Respiratory Medicine, Juntendo University, Graduate School of Medicine, Tokyo, Japan; Research Institute for Diseases of Old Ages, Juntendo University, Graduate School of Medicine, Tokyo, Japan
| | - Ken Tajima
- Department of Respiratory Medicine, Juntendo University, Graduate School of Medicine, Tokyo, Japan; Research Institute for Diseases of Old Ages, Juntendo University, Graduate School of Medicine, Tokyo, Japan
| | - Takuo Hayashi
- Department of Human Pathology, Juntendo University, Graduate School of Medicine, Tokyo, Japan
| | - Moulid Hidayat
- Department of Respiratory Medicine, Juntendo University, Graduate School of Medicine, Tokyo, Japan; Research Institute for Diseases of Old Ages, Juntendo University, Graduate School of Medicine, Tokyo, Japan
| | - Wira Winardi
- Department of Respiratory Medicine, Juntendo University, Graduate School of Medicine, Tokyo, Japan; Research Institute for Diseases of Old Ages, Juntendo University, Graduate School of Medicine, Tokyo, Japan
| | - Aditya Wirawan
- Department of Respiratory Medicine, Juntendo University, Graduate School of Medicine, Tokyo, Japan; Research Institute for Diseases of Old Ages, Juntendo University, Graduate School of Medicine, Tokyo, Japan
| | - Daisuke Hayakawa
- Department of Respiratory Medicine, Juntendo University, Graduate School of Medicine, Tokyo, Japan; Research Institute for Diseases of Old Ages, Juntendo University, Graduate School of Medicine, Tokyo, Japan
| | - Koichiro Kanamori
- Department of Respiratory Medicine, Juntendo University, Graduate School of Medicine, Tokyo, Japan; Research Institute for Diseases of Old Ages, Juntendo University, Graduate School of Medicine, Tokyo, Japan
| | - Naohisa Matsumoto
- Department of Respiratory Medicine, Juntendo University, Graduate School of Medicine, Tokyo, Japan; Research Institute for Diseases of Old Ages, Juntendo University, Graduate School of Medicine, Tokyo, Japan
| | - Toshifumi Yae
- Department of Respiratory Medicine, Juntendo University, Graduate School of Medicine, Tokyo, Japan; Research Institute for Diseases of Old Ages, Juntendo University, Graduate School of Medicine, Tokyo, Japan
| | - Tadashi Sato
- Department of Respiratory Medicine, Juntendo University, Graduate School of Medicine, Tokyo, Japan; Research Institute for Diseases of Old Ages, Juntendo University, Graduate School of Medicine, Tokyo, Japan
| | - Shinichi Sasaki
- Department of Respiratory Medicine, Juntendo University, Graduate School of Medicine, Tokyo, Japan; Research Institute for Diseases of Old Ages, Juntendo University, Graduate School of Medicine, Tokyo, Japan
| | - Kazuya Takamochi
- Department of General Thoracic Surgery,Juntendo University, Graduate School of Medicine, Tokyo, Japan
| | - Yoshiyuki Suehara
- Department of Orthopedic Surgery, Juntendo University, Graduate School of Medicine, Tokyo, Japan
| | - Dai Ogura
- Link Genomics, Incorporated, Tokyo, Japan
| | | | - Kenji Suzuki
- Department of General Thoracic Surgery,Juntendo University, Graduate School of Medicine, Tokyo, Japan
| | - Kazuhisa Takahashi
- Department of Respiratory Medicine, Juntendo University, Graduate School of Medicine, Tokyo, Japan; Research Institute for Diseases of Old Ages, Juntendo University, Graduate School of Medicine, Tokyo, Japan
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Bozza M, Green EW, Espinet E, De Roia A, Klein C, Vogel V, Offringa R, Williams JA, Sprick M, Harbottle RP. Novel Non-integrating DNA Nano-S/MAR Vectors Restore Gene Function in Isogenic Patient-Derived Pancreatic Tumor Models. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2020; 17:957-968. [PMID: 32420409 PMCID: PMC7218229 DOI: 10.1016/j.omtm.2020.04.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 04/22/2020] [Indexed: 12/22/2022]
Abstract
We describe herein non-integrating minimally sized nano-S/MAR DNA vectors, which can be used to genetically modify dividing cells in place of integrating vectors. They represent a unique genetic tool, which avoids vector-mediated damage. Previous work has shown that DNA vectors comprising a mammalian S/MAR element can provide persistent mitotic stability over hundreds of cell divisions, resisting epigenetic silencing and thereby allowing sustained transgene expression. The composition of the original S/MAR vectors does present some inherent limitations that can provoke cellular toxicity. Herein, we present a new system, the nano-S/MAR, which drives higher transgene expression and has improved efficiency of establishment, due to the minimal impact on cellular processes and perturbation of the endogenous transcriptome. We show that these features enable the hitherto challenging genetic modification of patient-derived cells to stably restore the tumor suppressor gene SMAD4 to a patient-derived SMAD4 knockout pancreatic cancer line. Nano-S/MAR modification does not alter the molecular or phenotypic integrity of the patient-derived cells in cell culture and xenograft mouse models. In conclusion, we show that these DNA vectors can be used to persistently modify a range of cells, providing sustained transgene expression while avoiding the risks of insertional mutagenesis and other vector-mediated toxicity.
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Affiliation(s)
- Matthias Bozza
- DNA Vector Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 242, 69120 Heidelberg, Germany
| | - Edward W Green
- Neuroimmunology and Brain Tumor Immunology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Elisa Espinet
- Division of Stem Cells and Cancer, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Alice De Roia
- DNA Vector Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 242, 69120 Heidelberg, Germany
| | - Corinna Klein
- Stem Cells and Metastasis, Hi-Stem Heidelberg, Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Vanessa Vogel
- Stem Cells and Metastasis, Hi-Stem Heidelberg, Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Rienk Offringa
- Molecular Oncology of Gastrointestinal Tumors, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | | | - Martin Sprick
- Stem Cells and Metastasis, Hi-Stem Heidelberg, Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Richard P Harbottle
- DNA Vector Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 242, 69120 Heidelberg, Germany
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44
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Hasan NAHM, Harith HH, Israf DA, Tham CL. The differential effects of commercial specialized media on cell growth and transforming growth factor beta 1-induced epithelial-mesenchymal transition in bronchial epithelial cells. Mol Biol Rep 2020; 47:3511-3519. [PMID: 32279207 DOI: 10.1007/s11033-020-05439-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 04/06/2020] [Indexed: 12/17/2022]
Abstract
Epithelial-mesenchymal transition (EMT) is one of the mechanisms that contribute to bronchial remodelling which underlie chronic inflammatory airway diseases such as chronic obstructive pulmonary disorder (COPD) and asthma. Bronchial EMT can be triggered by many factors including transforming growth factor β1 (TGFβ1). The majority of studies on TGFβ1-mediated bronchial EMT used BEGM as the culture medium. LHC-9 medium is another alternative available which is more economical but a less common option. Using normal human bronchial epithelial cells (BEAS-2B) cultured in BEGM as a reference, this study aims to validate the induction of EMT by TGFβ1 in cells cultured in LHC-9. Briefly, the cells were maintained in either LHC-9 or BEGM, and induced with TGFβ1 (5, 10 and 20 ng/ml) for 48 h. EMT induction was confirmed by morphological analysis and EMT markers expression by immunoblotting. In both media, cells induced with TGFβ1 displayed spindle-like morphology with a significantly higher radius ratio compared to non-induced cells which displayed a cobblestone morphology. Correspondingly, the expression of the epithelial marker E-cadherin was significantly lower, whereas the mesenchymal marker vimentin expression was significantly higher in induced cells, compared to non-induced cells. By contrast, a slower cell growth rate was observed in LHC-9 compared to that of BEGM. This study demonstrates that neither LHC-9 nor BEGM significantly influence TGFβ1-induced bronchial EMT. However, LHC-9 is less optimal for bronchial epithelial cell growth compared to BEGM. Thus, LHC-9 may be a more cost-effective substitute for BEGM, provided that time is not a factor.
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Affiliation(s)
- Nur Amilia Hanie Mohamad Hasan
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Hanis Hazeera Harith
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
| | - Daud Ahmad Israf
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Chau Ling Tham
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
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45
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Wasinski B, Sohail A, Bonfil RD, Kim S, Saliganan A, Polin L, Bouhamdan M, Kim HRC, Prunotto M, Fridman R. Discoidin Domain Receptors, DDR1b and DDR2, Promote Tumour Growth within Collagen but DDR1b Suppresses Experimental Lung Metastasis in HT1080 Xenografts. Sci Rep 2020; 10:2309. [PMID: 32047176 PMCID: PMC7012844 DOI: 10.1038/s41598-020-59028-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 01/20/2020] [Indexed: 12/17/2022] Open
Abstract
The Discoidin Domain Receptors (DDRs) constitute a unique set of receptor tyrosine kinases that signal in response to collagen. Using an inducible expression system in human HT1080 fibrosarcoma cells, we investigated the role of DDR1b and DDR2 on primary tumour growth and experimental lung metastases. Neither DDR1b nor DDR2 expression altered tumour growth at the primary site. However, implantation of DDR1b- or DDR2-expressing HT1080 cells with collagen I significantly accelerated tumour growth rate, an effect that could not be observed with collagen I in the absence of DDR induction. Interestingly, DDR1b, but not DDR2, completely hindered the ability of HT1080 cells to form lung colonies after intravenous inoculation, suggesting a differential role for DDR1b in primary tumour growth and lung colonization. Analyses of tumour extracts revealed specific alterations in Hippo pathway core components, as a function of DDR and collagen expression, that were associated with stimulation of tumour growth by DDRs and collagen I. Collectively, these findings identified divergent effects of DDRs on primary tumour growth and experimental lung metastasis in the HT1080 xenograft model and highlight the critical role of fibrillar collagen and DDRs in supporting the growth of tumours thriving within a collagen-rich stroma.
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Affiliation(s)
- Benjamin Wasinski
- Department of Pathology, Wayne State University School of Medicine and Karmanos Cancer Institute, Detroit, MI, 48201, USA
| | - Anjum Sohail
- Department of Pathology, Wayne State University School of Medicine and Karmanos Cancer Institute, Detroit, MI, 48201, USA
| | - R Daniel Bonfil
- Department of Pathology, Wayne State University School of Medicine and Karmanos Cancer Institute, Detroit, MI, 48201, USA.,Department of Urology, Wayne State University School of Medicine and Karmanos Cancer Institute, Detroit, MI, 48201, USA.,Department of Oncology, Wayne State University School of Medicine and Karmanos Cancer Institute, Detroit, MI, 48201, USA.,Department of Pathology, College of Medical Sciences and Dr. Kiran C. Patel College of Allopathic Medicine, Nova Southeastern University, Fort Lauderdale, FL, 33328-2018, USA
| | - Seongho Kim
- Department of Oncology, Wayne State University School of Medicine and Karmanos Cancer Institute, Detroit, MI, 48201, USA
| | - Allen Saliganan
- Department of Urology, Wayne State University School of Medicine and Karmanos Cancer Institute, Detroit, MI, 48201, USA
| | - Lisa Polin
- Department of Oncology, Wayne State University School of Medicine and Karmanos Cancer Institute, Detroit, MI, 48201, USA
| | - Mohamad Bouhamdan
- Department of Pathology, Wayne State University School of Medicine and Karmanos Cancer Institute, Detroit, MI, 48201, USA
| | - Hyeong-Reh C Kim
- Department of Pathology, Wayne State University School of Medicine and Karmanos Cancer Institute, Detroit, MI, 48201, USA.,Department of Oncology, Wayne State University School of Medicine and Karmanos Cancer Institute, Detroit, MI, 48201, USA
| | - Marco Prunotto
- Hoffmann-La Roche, Basel, Switzerland.,School of Pharmaceutical Sciences, Geneva, Switzerland
| | - Rafael Fridman
- Department of Pathology, Wayne State University School of Medicine and Karmanos Cancer Institute, Detroit, MI, 48201, USA. .,Department of Oncology, Wayne State University School of Medicine and Karmanos Cancer Institute, Detroit, MI, 48201, USA.
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46
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Rock Inhibitor Y-27632 Enables Feeder-Free, Unlimited Expansion of Sus scrofa domesticus Swine Airway Stem Cells to Facilitate Respiratory Research. Stem Cells Int 2019; 2019:3010656. [PMID: 31871466 PMCID: PMC6906834 DOI: 10.1155/2019/3010656] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 10/29/2019] [Indexed: 12/21/2022] Open
Abstract
Current limitations in the efficacy of treatments for chronic respiratory disorders position them as prospective regenerative medicine therapeutic targets. A substantial barrier to these ambitions is that research requires large numbers of cells whose acquisition is hindered by the limited availability of human tissue samples leading to an overreliance on physiologically dissimilar rodents. The development of cell culture strategies for airway cells from large mammals will more effectively support the transition from basic research to clinical therapy. Using readily available porcine lungs, we isolated conducting airway tissue and subsequently a large number of porcine airway epithelial cells (pAECs) using a digestion and mechanical scraping technique. Cells were cultured in a variety of culture media formulations, both foetal bovine serum-containing and serum-free media, in air (21%) and physiological (2%) oxygen tension and in the presence and absence of Rho kinase inhibitor Y-27362 (RI). Cell number at isolation and subsequent population doublings were determined; cells were characterised during culture and following differentiation by immunofluorescence, histology, and IL-8 ELISA. Cells were positive for epithelial markers (pan-cytokeratin and E-cadherin) and negative for fibroblastic markers (vimentin and smooth muscle actin). Supplementation of cultures with Y-27632 allowed for unlimited expansion whilst sustaining an epithelial phenotype. Early passage pAECs readily produced differentiated air-liquid interface (ALI) cultures with a capacity for mucociliary differentiation retained after substantial expansion, strongly modulated by the culture condition applied. Primary pAECs will be a useful tool to further respiratory-oriented research whilst RI-expanded pAECs are a promising tool, particularly with further optimisation of culture conditions.
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47
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Joseph R, Bales K, Srivastava K, Srivastava O. Lens epithelial cells-induced pluripotent stem cells as a model to study epithelial-mesenchymal transition during posterior capsular opacification. Biochem Biophys Rep 2019; 20:100696. [PMID: 31681860 PMCID: PMC6818140 DOI: 10.1016/j.bbrep.2019.100696] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 10/02/2019] [Accepted: 10/11/2019] [Indexed: 12/11/2022] Open
Abstract
The overall goal was to generate an epithelial-mesenchymal transition (EMT) model using lens epithelial cells-induced pluripotent stem cells to elucidate EMT-regulatory factors during posterior capsular opacification (PCO). For this purpose, the mouse lens epithelial cells-derived mesenchymal cells were reprogrammed to induced pluripotent stem cells (iPSC) and differentiated to lens epithelial cells to be used to determine regulatory factors during EMT. Lens epithelial cells from one-month-old C57BL/6 mice were transitioned to mesenchymal cells in culture, and were reprogrammed to iPSC by delivering reprogramming factors in a single polycistronic lentiviral vector (co-expressing four transcription factors, Oct 4, Sox2, Klf4, and Myc). iPSC were differentiated to epithelial cells by a three-step process using noggin, basic fibroblast growth factor (bFGF), bone morphogenetic protein 4 (BMP4) and Wnt-3. At various time points, the cells/clones were immunocytochemically analyzed for epithelial cell markers (Connexin-43 and E-cadherin), mesenchymal cell markers (Alpha-smooth muscle actin), stem cell markers (Sox1, Oct4, SSEA4 and Tra60) and lens-specific epithelial cell markers (αA- and βA3/A1-crystallins). By increasing the number of genetic transductions, the time needed for generating iPSC from lens mesenchymal cells was reduced, successfully reprogrammed epithelial/mesenchymal cells into iPSC, and retransformed iPSC into lens epithelial cells by the growth factors’ treatment. The epithelial cells could serve as a model system to elucidate regulatory factors involved during EMT to therapeutically stop it. By increasing the number of genetic transductions, reduced the time needed for generating iPSC from lens mesenchymal cells. We successfully reprogrammed iPSC, and also differentiated iPSC into lens epithelial cells by the growth factors. Our model could elucidate regulatory factors involved in epithelial mesenchymal transition to therapeutically stop it.
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Affiliation(s)
| | | | | | - Om Srivastava
- Corresponding author. Department of Optometry and Vision Science, University of Alabama at Birmingham, 1716 University Boulevard, HPB-437, Birmingham, AL, 35294-0010, USA.
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48
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He S, Sun H, Huang Y, Dong S, Qiao C, Zhang S, Wang C, Zheng F, Yan M, Yang G. Identification and Interaction Analysis of Significant Genes and MicroRNAs in Pterygium. BIOMED RESEARCH INTERNATIONAL 2019; 2019:2767512. [PMID: 31341891 PMCID: PMC6614972 DOI: 10.1155/2019/2767512] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 04/04/2019] [Accepted: 04/14/2019] [Indexed: 12/15/2022]
Abstract
PURPOSE MiRNAs have been widely analyzed in the occurrence and development of many diseases, including pterygium. This study aimed to identify the key genes and miRNAs in pterygium and to explore the underlying molecular mechanisms. METHODS MiRNA expression was initially extracted and pooled by published literature. Microarray data about differentially expressed genes was downloaded from Gene Expression Omnibus (GEO) database and analyzed with the R programming language. Functional and pathway enrichment analyses were performed using the database for Annotation, Visualization and Integrated Discovery (DAVID). The protein-protein interaction network was constructed with the STRING database. The associations between chemicals, differentially expressed miRNAs, and differentially expressed genes were predicted using the online resource. All the networks were constructed using Cytoscape. RESULTS We found that 35 miRNAs and 301 genes were significantly differentially expressed. Functional enrichment analysis showed that upregulated genes were significantly enriched in extracellular matrix (ECM) organization, while downregulated genes were mainly involved in cell death and apoptotic process. Finally, we concluded the chemical-gene affected network, miRNA-mRNA interacted networks, and significant pathway network. CONCLUSION We identified lists of differentially expressed miRNAs and genes and their possible interaction in pterygium. The networks indicated that ECM breakdown and EMT might be two major pathophysiological mechanisms and showed the potential significance of PI3K-Akt signalling pathway. MiR-29b-3p and collagen family (COL4A1 and COL3A1) might be new treatment target in pterygium.
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Affiliation(s)
- Siying He
- Center for Gene Diagnosis & Core Lab, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, China
| | - Hui Sun
- Center for Gene Diagnosis & Core Lab, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, China
| | - Yifang Huang
- Center for Gene Diagnosis & Core Lab, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, China
| | - Shiqi Dong
- Department of Ophthamology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, China
| | - Chen Qiao
- Department of Corneal, Hankou Aier Eye Hospital, Wuhan, Hubei 430024, China
| | - Shuai Zhang
- Center for Gene Diagnosis & Core Lab, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, China
| | - Chen Wang
- Center for Gene Diagnosis & Core Lab, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, China
| | - Fang Zheng
- Center for Gene Diagnosis & Core Lab, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, China
- Hubei Clinical Research Center for Prenatal Diagnosis and Birth Health, Wuhan, Hubei 430071, China
| | - Ming Yan
- Center for Gene Diagnosis & Core Lab, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, China
- Department of Ophthamology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, China
| | - Guohua Yang
- Demonstration Center for Experimental Basic Medicine Education of Wuhan University, Wuhan, Hubei 430071, China
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49
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Epithelial-Mesenchymal Transition Promotes the Differentiation Potential of Xenopus tropicalis Immature Sertoli Cells. Stem Cells Int 2019; 2019:8387478. [PMID: 31191685 PMCID: PMC6525813 DOI: 10.1155/2019/8387478] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 03/27/2019] [Indexed: 01/18/2023] Open
Abstract
Epithelial-mesenchymal transition (EMT) is a fundamental process in embryonic development by which sessile epithelial cells are converted into migratory mesenchymal cells. Our laboratory has been successful in the establishment of Xenopus tropicalis immature Sertoli cells (XtiSCs) with the restricted differentiation potential. The aim of this study is the determination of factors responsible for EMT activation in XtiSCs and stemness window acquisition where cells possess the broadest differentiation potential. For this purpose, we tested three potent EMT inducers—GSK-3 inhibitor (CHIR99021), FGF2, and/or TGF-β1 ligand. XtiSCs underwent full EMT after 3-day treatment with CHIR99021 and partial EMT with FGF2 but not with TGF-β1. The morphological change of CHIR-treated XtiSCs to the typical spindle-like cell shape was associated with the upregulation of mesenchymal markers and the downregulation of epithelial markers. Moreover, only CHIR-treated XtiSCs were able to differentiate into chondrocytes in vitro and cardiomyocytes in vivo. Interestingly, EMT-shifted cells could migrate towards cancer cells (HeLa) in vitro and to the injury site in vivo. The results provide a better understanding of signaling pathways underlying the generation of testis-derived stem cells.
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50
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Weigle S, Martin E, Voegtle A, Wahl B, Schuler M. Primary cell-based phenotypic assays to pharmacologically and genetically study fibrotic diseases in vitro. J Biol Methods 2019; 6:e115. [PMID: 31453262 PMCID: PMC6706098 DOI: 10.14440/jbm.2019.285] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 03/20/2019] [Accepted: 03/20/2019] [Indexed: 12/27/2022] Open
Abstract
Ongoing tissue repair and formation and deposition of collagen-rich extracellular matrix in tissues and organs finally lead to fibrotic lesions and destruction of normal tissue/organ architecture and function. In the lung, scarring is observed in asthma, chronic obstructive pulmonary disease and idiopathic pulmonary fibrosis to various degrees. At the cellular level immune cells, fibroblasts and epithelial cells are all involved in fibrotic processes. Mechanistically, fibroblast to myofibroblast transformation and epithelial to mesenchymal transition are major drivers of fibrosis. Amongst others, both processes are controlled by transforming growth factor beta-1 (TGFβ-1), a growth factor upregulated in idiopathic pulmonary fibrosis lungs. Phenotypic assays with primary human cells and complex disease-relevant readouts become increasingly important in modern drug discovery processes. We describe high-content screening based phenotypic assays with primary normal human lung fibroblasts and primary human airway epithelial cells. For both cell types, TGFβ-1 stimulation is used to induce fibrotic phenotypes in vitro, with alpha smooth muscle actin and collagen-I as readouts for FMT and E-cadherin as a readout for EMT. For each assay, a detailed image analysis protocols is described. Treatment of both cell types with TGFβ-1 and a transforming growth factor beta receptor inhibitor verifies the suitability of the assays for pharmacological interventions. In addition, the assays are compatible for siRNA and Cas9-ribonucleoprotein transfections, and thus are useful for genetic target identification/validation by modulating gene expression.
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Affiliation(s)
| | | | | | | | - Michael Schuler
- Boehringer Ingelheim Pharma GmbH & Co. KG, Department of Drug Discovery Sciences, 88397 Biberach an der Riss, Germany
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