101
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Nie S, Zhang H, Mayer KM, Oppenheim FG, Little FF, Greenberg J, Uluer AZ, Walt DR. Correlations of salivary biomarkers with clinical assessments in patients with cystic fibrosis. PLoS One 2015; 10:e0135237. [PMID: 26258476 PMCID: PMC4530931 DOI: 10.1371/journal.pone.0135237] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Accepted: 07/20/2015] [Indexed: 01/17/2023] Open
Abstract
RATIONALE Monitoring clinical disease status in cystic fibrosis frequently requires invasive collection of clinical samples. Due to its noninvasive collection process and direct anatomic relationship with the lower airway, saliva shows great potential as a biological fluid for cystic fibrosis monitoring. OBJECTIVES To measure the levels of multiple protein markers in human saliva supernatants and investigate the possibility of utilizing them to provide a more quantitative measure of disease state for use in research and monitoring of patients with cystic fibrosis clinically. METHODS Whole saliva samples were collected and processed from cystic fibrosis patients at two distinct time points (2010 and 2013) and measured by two separate platforms. In this cross sectional study, a convenience sample of 71 participants were recruited with samples measured by multiplexed fluorescence microarray (fiber microarray) and another 117 participant samples were measured by an automated, point-of-care, analyzer (SDReader) using a microsphere-based array via fluorescence sandwich immunoassay. For comparison, saliva from 56 and 50 healthy subjects were collected, respectively. The levels of six target proteins were quantified. Various demographic and clinical data, including spirometry, medical history, and clinicians' assessments were also collected from patients with cystic fibrosis on the day of saliva collection. MEASUREMENTS AND MAIN RESULTS Similar trends were observed with both platforms and compared with healthy subjects, cystic fibrosis patients had significantly elevated levels of VEGF, IP-10, IL-8, and EGF as well as lower levels of MMP-9 (P ≤ 0.005) using fiber microarray and significantly elevated levels of IP-10, IL-8 with lower levels of MMP-9 and IL-1β (P ≤ 0.02) using the SDReader. The levels of the six proteins correlated with each other significantly, and in some cases, biomarker levels could be used to differentiate between subgroups of patients with different clinical presentations. For example, IP-10 levels significantly correlated with FEV1 and disease severity (as evaluated by clinicians) with both platforms (P < 0.05). CONCLUSIONS Significant variations of the levels of six proteins in saliva supernatants, and the correlations of these levels with clinical assessments, demonstrated the potential of saliva for cystic fibrosis research and monitoring.
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Affiliation(s)
- Shuai Nie
- Department of Chemistry, Tufts University, Medford, Massachusetts, United States of America
| | - Huaibin Zhang
- Department of Chemistry, Tufts University, Medford, Massachusetts, United States of America
| | - Kathryn M. Mayer
- Department of Chemistry, Tufts University, Medford, Massachusetts, United States of America
| | - Frank G. Oppenheim
- Goldman School of Dental Medicine, Boston University, Boston, Massachusetts, United States of America
| | - Frédéric F. Little
- School of Medicine, Boston University, Boston, Massachusetts, United States of America
| | - Jonathan Greenberg
- Division of Respiratory Diseases, Boston Children’s Hospital and Brigham & Women’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Ahmet Z. Uluer
- Division of Respiratory Diseases, Boston Children’s Hospital and Brigham & Women’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - David R. Walt
- Department of Chemistry, Tufts University, Medford, Massachusetts, United States of America
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102
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Tamaoki J. Targeting airway mucus hypersecretion in chronic obstructive pulmonary disease. Respir Investig 2015; 53:247-8. [PMID: 26521101 DOI: 10.1016/j.resinv.2015.05.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Jun Tamaoki
- First Department of Medicine, Tokyo Women׳s Medical University, Japan
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103
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Alan E, Lİman N, Sağsöz H. Immunohistochemical localization of epidermal growth factor system in the lung of the Japanese quail (Coturnix coturnix japonica) during the post-hatching period. Microsc Res Tech 2015; 78:807-22. [PMID: 26179370 DOI: 10.1002/jemt.22544] [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: 01/29/2015] [Revised: 06/18/2015] [Accepted: 06/21/2015] [Indexed: 11/09/2022]
Abstract
The purpose of this study is to determine the possible changes in the localization of the four Epidermal Growth Factor Receptors and three ligands in quail lungs from the first day of hatching until the 125th after hatching using immunohistochemical methods. Immunohistochemical results demonstrated that four EGFRs and their ligands are chiefly located in the cytoplasm of cells. Additionally, ErbB4, AREG, and NRG1 are localized to the nucleus and nucleolus, but EGF is present in the nucleolus. ErbB2 was also found in the cell membrane. In the epithelium of secondary bronchi, the goblet cells only exhibited ErbB1 and ErbB2, whereas the basal and ciliated cells exhibited EGFRs and ligands immunoreactivity. The atrial granular cells displayed moderate levels of ErbB1-ErbB3 and EGF and strong levels of ErbB4, AREG, and NRG1 immunoreactivity. While the squamous atrial cells and squamous respiratory cells of air capillaries and endothelial cells of blood capillaries exhibited moderate to strong ErbB2, ErbB4, AREG, and NRG1 immunoreactivity, they had negative or weak ErbB1, ErbB3, and EGF immunoreactivity. The expression levels of ErbB2-ErbB4, EGF, AREG, and NRG1 were also detected in fibroblasts. Although ErbB2 was highly expressed in the bronchial and vascular smooth muscle cells, weak expression of ErbB1, ErbB3, AREG and EGF and moderate expression of ErbB4 and NRG1 were observed. Macrophages were only negative for ErbB1. In conclusion, these data indicate that the EGFR-system is functionally active at hatching, which supports the hypothesis that the members of EGFR-system play several cell-specific roles in quail lung growth after hatching.
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Affiliation(s)
- Emel Alan
- Department of Histology and Embryology, Faculty of Veterinary Medicine, University of Erciyes, Kayseri, Turkey
| | - Narİn Lİman
- Department of Histology and Embryology, Faculty of Veterinary Medicine, University of Erciyes, Kayseri, Turkey
| | - Hakan Sağsöz
- Department of Histology and Embryology, Faculty of Veterinary Medicine, University of Dicle, Diyarbakır, Turkey
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Abstract
Asthma is characterized by chronic inflammation, airway hyperresponsiveness, and progressive airway remodeling. The airway epithelium is known to play a critical role in the initiation and perpetuation of these processes. Here, we review how excessive epithelial stress generated by bronchoconstriction is sufficient to induce airway remodeling, even in the absence of inflammatory cells.
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Affiliation(s)
- Jin-Ah Park
- Harvard T. H. Chan School of Public Health, Boston, Massachussetts
| | | | - Jeffrey M Drazen
- Harvard T. H. Chan School of Public Health, Boston, Massachussetts
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105
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Kanai K, Koarai A, Shishikura Y, Sugiura H, Ichikawa T, Kikuchi T, Akamatsu K, Hirano T, Nakanishi M, Matsunaga K, Minakata Y, Ichinose M. Cigarette smoke augments MUC5AC production via the TLR3-EGFR pathway in airway epithelial cells. Respir Investig 2015; 53:137-48. [PMID: 26100173 DOI: 10.1016/j.resinv.2015.01.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Revised: 01/05/2015] [Accepted: 01/21/2015] [Indexed: 06/04/2023]
Abstract
BACKGROUND Viral infections are a major cause of chronic obstructive pulmonary disease (COPD) exacerbations. Toll-like receptor 3 (TLR3) reacts with double-stranded RNA (dsRNA) and participates in the immune response after viral infection. In the present study, we examined whether cigarette smoke, which is involved in the pathogenesis of COPD, enhances mucin production via the TLR3-epidermal growth factor receptor (EGFR) pathway in airway epithelial cells. METHODS We studied the effects of cigarette smoke extract (CSE) on signal transduction and the production of mucin 5AC (MUC5AC) in NCI-H292 cells and differentiated primary human bronchial epithelial cells stimulated with a synthetic dsRNA analogue, polyinosinic-polycytidylic acid [poly(I:C)], used as a TLR3 ligand. RESULTS CSE significantly potentiated the production of MUC5AC in epithelial cells stimulated with poly(I:C). Antibodies to EGFR or EGFR ligands inhibited CSE-augmented MUC5AC release in poly(I:C)-treated cells. Treatment with poly(I:C) or CSE alone increased the phosphorylation of EGFR and extracellular signal-regulated kinase (ERK). However, after poly(I:C) stimulation, CSE did not enhance EGFR phosphorylation, but did augment ERK phosphorylation. EGFR inhibitors and an ERK inhibitor inhibited the augmented release of MUC5AC. In addition, treatment with N-acetylcysteine, an antioxidant, inhibited the CSE-augmented phosphorylation of ERK and MUC5AC. CONCLUSIONS These data show that cigarette smoke increases TLR3-stimulated MUC5AC production in airway epithelial cells, mainly via ERK signaling. The effect might be mediated in part by oxidative stress. Modulation of this pathway might be a therapeutic target for viral-induced mucin overproduction in COPD exacerbation.
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Affiliation(s)
- Kuninobu Kanai
- Third Department of Internal Medicine, Wakayama Medical University, Wakayama, Japan.
| | - Akira Koarai
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan.
| | - Yutaka Shishikura
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan.
| | - Hisatoshi Sugiura
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan.
| | - Tomohiro Ichikawa
- Third Department of Internal Medicine, Wakayama Medical University, Wakayama, Japan.
| | - Takashi Kikuchi
- Third Department of Internal Medicine, Wakayama Medical University, Wakayama, Japan.
| | - Keiichiro Akamatsu
- Third Department of Internal Medicine, Wakayama Medical University, Wakayama, Japan.
| | - Tsunahiko Hirano
- Third Department of Internal Medicine, Wakayama Medical University, Wakayama, Japan.
| | - Masanori Nakanishi
- Third Department of Internal Medicine, Wakayama Medical University, Wakayama, Japan.
| | - Kazuto Matsunaga
- Third Department of Internal Medicine, Wakayama Medical University, Wakayama, Japan.
| | - Yoshiaki Minakata
- Third Department of Internal Medicine, Wakayama Medical University, Wakayama, Japan.
| | - Masakazu Ichinose
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan.
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Yoon YP, Lee HJ, Lee DU, Lee SK, Hong JH, Lee CJ. Effects of Lupenone, Lupeol, and Taraxerol Derived from Adenophora triphylla on the Gene Expression and Production of Airway MUC5AC Mucin. Tuberc Respir Dis (Seoul) 2015; 78:210-7. [PMID: 26175774 PMCID: PMC4499588 DOI: 10.4046/trd.2015.78.3.210] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 12/09/2014] [Accepted: 01/26/2015] [Indexed: 11/24/2022] Open
Abstract
Background Adenophora triphylla var. japonica is empirically used for controlling airway inflammatory diseases in folk medicine. We evaluated the gene expression and production of mucin from airway epithelial cells in response to lupenone, lupeol and taraxerol derived from Adenophora triphylla var. japonica. Methods Confluent NCI-H292 cells were pretreated with lupenone, lupeol or taraxerol for 30 minutes and then stimulated with tumor necrosis factor α (TNF-α) for 24 hours. The MUC5AC mucin gene expression and production were measured by reverse transcription-polymerase chain reaction and enzyme-linked immunosorbent assay, respectively. Additionally, we examined whether lupenone, lupeol or taraxerol affects MUC5AC mucin production induced by epidermal growth factor (EGF) and phorbol 12-myristate 13-acetate (PMA), the other 2 stimulators of airway mucin production. Results Lupenone, lupeol, and taraxerol inhibited the gene expression and production of MUC5AC mucin induced by TNF-α from NCI-H292 cells, respectively. The 3 compounds inhibited the EGF or PMA-induced production of MUC5AC mucin in NCI-H292 cells. Conclusion These results indicated that lupenone, lupeol and taraxerol derived from Adenophora triphylla var. japonica regulates the production and gene expression of mucin, by directly acting on airway epithelial cells. In addition, the results partly explain the mechanism of of Adenophora triphylla var. japonica as a traditional remedy for diverse inflammatory pulmonary diseases.
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Affiliation(s)
- Yong Pill Yoon
- Department of Pharmacology, Chungnam National University School of Medicine, Daejeon, Korea
| | - Hyun Jae Lee
- Department of Pharmacology, Chungnam National University School of Medicine, Daejeon, Korea
| | - Dong-Ung Lee
- Division of Bioscience, Dongguk University, Gyeongju, Korea
| | - Sang Kook Lee
- Department of Pharmacy, College of Pharmacy, Seoul National University, Seoul, Korea
| | - Jang-Hee Hong
- Department of Pharmacology, Chungnam National University School of Medicine, Daejeon, Korea
| | - Choong Jae Lee
- Department of Pharmacology, Chungnam National University School of Medicine, Daejeon, Korea
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Omega-3 PUFA docosahexaenoic acid decreases LPS-stimulated MUC5AC production by altering EGFR-related signaling in NCI-H292 cells. Biochem Biophys Res Commun 2015; 463:1047-52. [PMID: 26079889 DOI: 10.1016/j.bbrc.2015.06.056] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Accepted: 06/08/2015] [Indexed: 11/23/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) is an inflammatory process characterized by airway mucus hypersecretion. Lipopolysaccharides (LPS) are known to stimulate the production of mucin 5AC (MUC5AC) via epidermal growth factor receptor (EGFR) in human airway cells. Noteworthy, we have previously demonstrated that EGFR/Rac1/reactive oxygen species (ROS)/matrix metalloproteinase 9 (MMP-9) is a key signaling cascade regulating MUC5AC production in airway cells challenged with LPS. Various reports have shown an inverse association between the intake of polyunsaturated fatty acids (PUFA) of the n-3 (omega-3) family or fish consumption and COPD. In the present study, we investigated the influence of docosahexaenoic acid (DHA), one of the most important omega-3 PUFA contained in fish oil, on the production of MUC5AC in LPS-challenged human airway cells NCI--H292. Our results indicate that DHA is capable of counteracting MUC5AC overproduction in LPS-stimulated cells by abrogating both EGFR phosphorylation and its downstream signaling pathway. This signaling pathway not only includes Rac1, ROS and MMP-9, but also NF-κB, since we have found that ROS require NF-κB activity to induce MMP-9 secretion and activation.
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108
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Parker JC, Douglas I, Bell J, Comer D, Bailie K, Skibinski G, Heaney LG, Shields MD. Epidermal Growth Factor Removal or Tyrphostin AG1478 Treatment Reduces Goblet Cells & Mucus Secretion of Epithelial Cells from Asthmatic Children Using the Air-Liquid Interface Model. PLoS One 2015; 10:e0129546. [PMID: 26057128 PMCID: PMC4461195 DOI: 10.1371/journal.pone.0129546] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Accepted: 05/11/2015] [Indexed: 11/30/2022] Open
Abstract
Rationale Epithelial remodelling in asthma is characterised by goblet cell hyperplasia and mucus hypersecretion for which no therapies exist. Differentiated bronchial air-liquid interface cultures from asthmatic children display high goblet cell numbers. Epidermal growth factor and its receptor have been implicated in goblet cell hyperplasia. Objectives We hypothesised that EGF removal or tyrphostin AG1478 treatment of differentiating air-liquid interface cultures from asthmatic children would result in a reduction of epithelial goblet cells and mucus secretion. Methods In Aim 1 primary bronchial epithelial cells from non-asthmatic (n = 5) and asthmatic (n = 5) children were differentiated under EGF-positive (10ng/ml EGF) and EGF-negative culture conditions for 28 days. In Aim 2, cultures from a further group of asthmatic children (n = 5) were grown under tyrphostin AG1478, a tyrosine kinase inhibitor, conditions. All cultures were analysed for epithelial resistance, markers of differentiation using immunocytochemistry, ELISA for MUC5AC mucin secretion and qPCR for MUC5AC mRNA. Results In cultures from asthmatic children the goblet cell number was reduced in the EGF negative group (p = 0.01). Tyrphostin AG1478 treatment of cultures from asthmatic children had significant reductions in goblet cells at 0.2μg/ml (p = 0.03) and 2μg/ml (p = 0.003) as well as mucus secretion at 2μg/ml (p = 0.04). Conclusions We have shown in this preliminary study that through EGF removal and tyrphostin AG1478 treatment the goblet cell number and mucus hypersecretion in differentiating air-liquid interface cultures from asthmatic children is significantly reduced. This further highlights the epidermal growth factor receptor as a potential therapeutic target to inhibit goblet cell hyperplasia and mucus hypersecretion in asthma.
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Affiliation(s)
- Jeremy C. Parker
- Centre for Infection and Immunity, Health Sciences Building, Queen’s University Belfast, Belfast, Northern Ireland
| | - Isobel Douglas
- Royal Belfast Hospital for Sick Children, Belfast, Northern Ireland
| | - Jennifer Bell
- Centre for Infection and Immunity, Health Sciences Building, Queen’s University Belfast, Belfast, Northern Ireland
| | - David Comer
- Centre for Infection and Immunity, Health Sciences Building, Queen’s University Belfast, Belfast, Northern Ireland
| | - Keith Bailie
- Royal Belfast Hospital for Sick Children, Belfast, Northern Ireland
| | - Grzegorz Skibinski
- Centre for Infection and Immunity, Health Sciences Building, Queen’s University Belfast, Belfast, Northern Ireland
| | - Liam G. Heaney
- Centre for Infection and Immunity, Health Sciences Building, Queen’s University Belfast, Belfast, Northern Ireland
- * E-mail:
| | - Michael D. Shields
- Centre for Infection and Immunity, Health Sciences Building, Queen’s University Belfast, Belfast, Northern Ireland
- Royal Belfast Hospital for Sick Children, Belfast, Northern Ireland
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Lee HJ, Park JS, Yoon YP, Shin YJ, Lee SK, Kim YS, Hong JH, Son KH, Lee CJ. Dioscin and methylprotodioscin isolated from the root of Asparagus cochinchinensis suppressed the gene expression and production of airway MUC5AC mucin induced by phorbol ester and growth factor. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2015; 22:568-572. [PMID: 25981923 DOI: 10.1016/j.phymed.2015.03.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 11/03/2014] [Accepted: 03/19/2015] [Indexed: 06/04/2023]
Abstract
BACKGROUND The root of Asparagus cochinchinensis (Lour.) Merr. has been utilized as mucoregulators and expectorants for controlling the airway inflammatory diseases in folk medicine. HYPOTHESIS/PURPOSE We investigated whether dioscin and methylprotodioscin isolated from the root of Asparagus cochinchinensis (Lour.) Merr. suppress the gene expression and production of airway MUC5AC mucin induced by phorbol ester and growth factor. STUDY DESIGN Confluent NCI-H292 cells were pretreated with dioscin or methylprotodioscin for 30 min and then stimulated with EGF or PMA for 24 h. The MUC5AC mucin gene expression was measured by RT-PCR. Production of MUC5AC mucin protein was measured by ELISA. RESULTS (1) Dioscin and methylprotodioscin suppressed the expression of MUC5AC mucin gene induced by EGF or PMA; (2) dioscin suppressed the production of MUC5AC mucin induced by either EGF at 10(-5) M (p < 0.05) and 10(-6) M (p < 0.05) or PMA at 10(-4) M (p < 0.05), 10(-5) M (p < 0.05) and 10(-6) M (p < 0.05); (3) methylprotodioscin also suppressed the production of MUC5AC mucin induced by either EGF at 10(-4) M (p < 0.05) or PMA at 10(-4) M (p < 0.05). CONCLUSION These results suggest that dioscin and methylprotodioscin isolated from the root of Asparagus cochinchinensis suppress the gene expression and production of MUC5AC mucin, by directly acting on airway epithelial cells, and the results are consistent with the traditional use of Asparagus cochinchinensis as remedy for diverse inflammatory pulmonary diseases.
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Affiliation(s)
- Hyun Jae Lee
- Department of Pharmacology, School of Medicine, Chungnam National University, 6 Munhwa-Dong, Joong-Gu, Daejeon 303-131, Republic of Korea
| | - Jin Sung Park
- Department of Orthopedic Surgery and Institute of Health Sciences, School of Medicine and Hospital, Gyeongsang National University, Jinju 660-702, Republic of Korea
| | - Yong Pill Yoon
- Department of Pharmacology, School of Medicine, Chungnam National University, 6 Munhwa-Dong, Joong-Gu, Daejeon 303-131, Republic of Korea
| | - Ye Jin Shin
- Department of Food Science and Nutrition, Andong National University, Andong 760-749, Republic of Korea
| | - Sang Kook Lee
- Department of Pharmacy, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Yeong Shik Kim
- Department of Pharmacy, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Jang-Hee Hong
- Department of Pharmacology, School of Medicine, Chungnam National University, 6 Munhwa-Dong, Joong-Gu, Daejeon 303-131, Republic of Korea
| | - Kun Ho Son
- Department of Orthopedic Surgery and Institute of Health Sciences, School of Medicine and Hospital, Gyeongsang National University, Jinju 660-702, Republic of Korea.
| | - Choong Jae Lee
- Department of Pharmacology, School of Medicine, Chungnam National University, 6 Munhwa-Dong, Joong-Gu, Daejeon 303-131, Republic of Korea.
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Ledford JG, Voelker DR, Addison KJ, Wang Y, Nikam VS, Degan S, Kandasamy P, Tanyaratsrisakul S, Fischer BM, Kraft M, Hollingsworth JW. Genetic variation in SP-A2 leads to differential binding to Mycoplasma pneumoniae membranes and regulation of host responses. THE JOURNAL OF IMMUNOLOGY 2015; 194:6123-32. [PMID: 25957169 DOI: 10.4049/jimmunol.1500104] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Accepted: 04/19/2015] [Indexed: 01/14/2023]
Abstract
Mycoplasma pneumoniae is an extracellular pathogen that colonizes mucosal surfaces of the respiratory tract and is associated with asthma exacerbations. Previous reports demonstrate that surfactant protein-A (SP-A) binds live M. pneumoniae and mycoplasma membrane fractions (MMF) with high affinity. Humans express a repertoire of single-amino acid genetic variants of SP-A that may be associated with lung disease, and our findings demonstrate that allelic differences in SP-A2 (Gln223Lys) affect the binding to MMF. We show that SP-A(-/-) mice are more susceptible to MMF exposure and have significant increases in mucin production and neutrophil recruitment. Novel humanized SP-A2-transgenic mice harboring the hSP-A2 223K allele exhibit reduced neutrophil influx and mucin production in the lungs when challenged with MMF compared with SP-A(-/-) mice. Conversely, mice expressing hSP-A2 223Q have increased neutrophil influx and mucin production that are similar to SP-A(-/-) mice. Using tracheal epithelial cell cultures, we show that enhanced mucin production to MMF occurs in the absence of SP-A and is not dependent upon neutrophil recruitment. Increased phosphorylation of the epidermal growth factor receptor (EGFR) was evident in the lungs of MMF-challenged mice when SP-A was absent. Pharmacologic inhibition of EGFR prior to MMF challenge dramatically reduced mucin production in SP-A(-/-) mice. These findings suggest a protective role for SP-A in limiting MMF-stimulated mucin production that occurs through interference with EGFR-mediated signaling. SP-A interaction with the EGFR signaling pathway appears to occur in an allele-specific manner that may have important implications for SP-A polymorphisms in human diseases.
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Affiliation(s)
- Julie G Ledford
- Department of Medicine, Duke University Medical Center, Durham, NC 27710; Department of Cell Biology, Duke University Medical Center, Durham, NC 27710; Department of Medicine, University of Arizona, Tucson, AZ 85721;
| | - Dennis R Voelker
- Department of Medicine, National Jewish Health, Denver, CO 80206
| | - Kenneth J Addison
- Department of Medicine, Duke University Medical Center, Durham, NC 27710; Department of Medicine, University of Arizona, Tucson, AZ 85721
| | - Ying Wang
- Department of Medicine, Duke University Medical Center, Durham, NC 27710; Department of Medicine, University of Arizona, Tucson, AZ 85721
| | - Vinayak S Nikam
- Department of Cell Biology, Duke University Medical Center, Durham, NC 27710
| | - Simone Degan
- Department of Radiology, Duke University Medical Center, Durham, NC 27710
| | | | | | - Bernard M Fischer
- Department of Pediatrics, Duke University Medical Center, Durham, NC 27710; and
| | - Monica Kraft
- Department of Medicine, Duke University Medical Center, Durham, NC 27710; Department of Medicine, University of Arizona, Tucson, AZ 85721
| | - John W Hollingsworth
- Department of Medicine, Duke University Medical Center, Durham, NC 27710; Dorothy M. Davis Heart and Lung Research Institute, Wexner Medical Center, The Ohio State University, Columbus, OH 43210
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Gelb AF. Giants in chest medicine: Jay A. Nadel, MD. Chest 2015; 147:880-882. [PMID: 25848955 DOI: 10.1378/chest.14-2901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Affiliation(s)
- Arthur F Gelb
- Clinical Professor of Medicine, Geffen School of Medicine at the University of California, Los Angeles, Medical Center; Chair, Pulmonary Diseases, Lakewood Regional Medical Center, Lakewood, CA.
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Luteolin inhibited the gene expression, production and secretion of MUC5AC mucin via regulation of nuclear factor kappa B signaling pathway in human airway epithelial cells. Pulm Pharmacol Ther 2015; 31:117-22. [DOI: 10.1016/j.pupt.2014.09.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2014] [Revised: 08/12/2014] [Accepted: 09/25/2014] [Indexed: 11/20/2022]
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O'Leary C, Gilbert JL, O'Dea S, O'Brien FJ, Cryan SA. Respiratory Tissue Engineering: Current Status and Opportunities for the Future. TISSUE ENGINEERING PART B-REVIEWS 2015; 21:323-44. [PMID: 25587703 DOI: 10.1089/ten.teb.2014.0525] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Currently, lung disease and major airway trauma constitute a major global healthcare burden with limited treatment options. Airway diseases such as chronic obstructive pulmonary disease and cystic fibrosis have been identified as the fifth highest cause of mortality worldwide and are estimated to rise to fourth place by 2030. Alternate approaches and therapeutic modalities are urgently needed to improve clinical outcomes for chronic lung disease. This can be achieved through tissue engineering of the respiratory tract. Interest is growing in the use of airway tissue-engineered constructs as both a research tool, to further our understanding of airway pathology, validate new drugs, and pave the way for novel drug therapies, and also as regenerative medical devices or as an alternative to transplant tissue. This review provides a concise summary of the field of respiratory tissue engineering to date. An initial overview of airway anatomy and physiology is given, followed by a description of the stem cell populations and signaling processes involved in parenchymal healing and tissue repair. We then focus on the different biomaterials and tissue-engineered systems employed in upper and lower respiratory tract engineering and give a final perspective of the opportunities and challenges facing the field of respiratory tissue engineering.
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Affiliation(s)
- Cian O'Leary
- 1 Tissue Engineering Research Group, Department of Anatomy, Royal College of Surgeons in Ireland , Dublin, Ireland .,2 School of Pharmacy, Royal College of Surgeons in Ireland , Dublin, Ireland .,3 Advanced Materials and Bioengineering Research (AMBER) Centre, Royal College of Surgeons in Ireland and Trinity College Dublin , Dublin, Ireland
| | - Jennifer L Gilbert
- 4 Department of Biology, Institute of Immunology, University of Ireland , Maynooth, Ireland
| | - Shirley O'Dea
- 4 Department of Biology, Institute of Immunology, University of Ireland , Maynooth, Ireland
| | - Fergal J O'Brien
- 1 Tissue Engineering Research Group, Department of Anatomy, Royal College of Surgeons in Ireland , Dublin, Ireland .,3 Advanced Materials and Bioengineering Research (AMBER) Centre, Royal College of Surgeons in Ireland and Trinity College Dublin , Dublin, Ireland .,5 Trinity Centre of Bioengineering, Trinity College Dublin , Dublin, Ireland
| | - Sally-Ann Cryan
- 1 Tissue Engineering Research Group, Department of Anatomy, Royal College of Surgeons in Ireland , Dublin, Ireland .,2 School of Pharmacy, Royal College of Surgeons in Ireland , Dublin, Ireland .,5 Trinity Centre of Bioengineering, Trinity College Dublin , Dublin, Ireland
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The polymeric mucin Muc5ac is required for allergic airway hyperreactivity. Nat Commun 2015; 6:6281. [PMID: 25687754 PMCID: PMC4333679 DOI: 10.1038/ncomms7281] [Citation(s) in RCA: 214] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Accepted: 01/13/2015] [Indexed: 01/05/2023] Open
Abstract
In asthma, airflow obstruction is thought to result primarily from inflammation-triggered airway smooth muscle (ASM) contraction. However, anti-inflammatory and smooth muscle-relaxing treatments are often temporary or ineffective. Overproduction of the mucin MUC5AC is an additional disease feature that, while strongly associated pathologically, is poorly understood functionally. Here we show that Muc5ac is a central effector of allergic inflammation that is required for airway hyperreactivity (AHR) to methacholine (MCh). In mice bred on two well-characterized strain backgrounds (C57BL/6 and BALB/c) and exposed to two separate allergic stimuli (ovalbumin and Aspergillus extract), genetic removal of Muc5ac abolishes AHR. Residual MCh responses are identical to unchallenged controls, and although inflammation remains intact, heterogeneous mucous occlusion decreases by 74%. Thus, whereas inflammatory effects on ASM alone are insufficient for AHR, Muc5ac-mediated plugging is an essential mechanism. Inhibiting MUC5AC may be effective for treating asthma and other lung diseases where it is also overproduced.
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Brune K, Frank J, Schwingshackl A, Finigan J, Sidhaye VK. Pulmonary epithelial barrier function: some new players and mechanisms. Am J Physiol Lung Cell Mol Physiol 2015; 308:L731-45. [PMID: 25637609 DOI: 10.1152/ajplung.00309.2014] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Accepted: 01/27/2015] [Indexed: 12/20/2022] Open
Abstract
The pulmonary epithelium serves as a barrier to prevent access of the inspired luminal contents to the subepithelium. In addition, the epithelium dictates the initial responses of the lung to both infectious and noninfectious stimuli. One mechanism by which the epithelium does this is by coordinating transport of diffusible molecules across the epithelial barrier, both through the cell and between cells. In this review, we will discuss a few emerging paradigms of permeability changes through altered ion transport and paracellular regulation by which the epithelium gates its response to potentially detrimental luminal stimuli. This review is a summary of talks presented during a symposium in Experimental Biology geared toward novel and less recognized methods of epithelial barrier regulation. First, we will discuss mechanisms of dynamic regulation of cell-cell contacts in the context of repetitive exposure to inhaled infectious and noninfectious insults. In the second section, we will briefly discuss mechanisms of transcellular ion homeostasis specifically focused on the role of claudins and paracellular ion-channel regulation in chronic barrier dysfunction. In the next section, we will address transcellular ion transport and highlight the role of Trek-1 in epithelial responses to lung injury. In the final section, we will outline the role of epithelial growth receptor in barrier regulation in baseline, acute lung injury, and airway disease. We will then end with a summary of mechanisms of epithelial control as well as discuss emerging paradigms of the epithelium role in shifting between a structural element that maintains tight cell-cell adhesion to a cell that initiates and participates in immune responses.
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Affiliation(s)
- Kieran Brune
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, Maryland
| | - James Frank
- The Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, San Francisco VA Medical Center, and NCIRE/Veterans Health Research Institute, San Francisco, California
| | - Andreas Schwingshackl
- Department of Pediatrics, University of Tennessee Health Science Center, Memphis, Tennessee
| | - James Finigan
- Division of Oncology, Cancer Center, National Jewish Health, Denver, Colorado
| | - Venkataramana K Sidhaye
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, Maryland;
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Abstract
A few human tumor types have been modeled in mice using genetic or chemical tools. The final goal of these efforts is to establish models that mimic not only the location and cellular origin of human cancers but also their genetic aberrations and morphologic appearances. The latter has been neglected by most investigators, and comparative histopathology of human versus mouse cancers is not readily available. This issue is exacerbated by the fact that some human malignancies comprise a whole spectrum of cancer subtypes that differ molecularly and morphologically. Lung cancer is a paradigm that appears not only as non-small cell and small-cell lung cancer but comprises a plethora of subtypes with distinct morphologic features. This review discusses species-specific and common morphological features of non-small cell lung cancer in mice and humans. Potential inconsistencies and the need for refined genetic tools are discussed in the context of a comparative analysis between commonly employed RAS-induced mouse tumors and human lung cancers.
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Affiliation(s)
- Helmut H Popper
- Institute of Pathology, Research Unit Molecular Lung & Pleura Pathology, Medical University of Graz, Auenbruggerplatz 25, 8036, Graz, Austria,
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Seo HS, Sikder MA, Lee HJ, Ryu J, Lee CJ. Apigenin Inhibits Tumor Necrosis Factor-α-Induced Production and Gene Expression of Mucin through Regulating Nuclear Factor-Kappa B Signaling Pathway in Airway Epithelial Cells. Biomol Ther (Seoul) 2014; 22:525-31. [PMID: 25489420 PMCID: PMC4256032 DOI: 10.4062/biomolther.2014.094] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 08/29/2014] [Accepted: 09/01/2014] [Indexed: 01/19/2023] Open
Abstract
In the present study, we investigated whether apigenin significantly affects tumor necrosis factor-α (TNF-α)-induced production and gene expression of MUC5AC mucin in airway epithelial cells. Confluent NCI-H292 cells were pretreated with apigenin for 30 min and then stimulated with TNF-α for 24 h or the indicated periods. The MUC5AC mucin gene expression and mucin protein production were measured by reverse transcription - polymerase chain reaction (RT-PCR) and enzyme-linked immunosorbent assay (ELISA), respectively. Apigenin significantly inhibited MUC5AC mucin production and down-regulated MUC5AC gene expression induced by TNF-α in NCI-H292 cells. To elucidate the action mechanism of apigenin, effect of apigenin on TNF-α-induced nuclear factor kappa B (NF-κB) signaling pathway was also investigated by western blot analysis. Apigenin inhibited NF-κB activation induced by TNF-α. Inhibition of inhibitory kappa B kinase (IKK) by apigenin led to the suppression of inhibitory kappa B alpha (IκBα) phosphorylation and degradation, p65 nuclear translocation. This, in turn, led to the down-regulation of MUC5AC protein production in NCI-H292 cells. Apigenin also has an influence on upstream signaling of IKK because it inhibited the expression of adaptor protein, receptor interacting protein 1 (RIP1). These results suggest that apigenin can regulate the production and gene expression of mucin through regulating NF-κB signaling pathway in airway epithelial cells.
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Affiliation(s)
- Hyo-Seok Seo
- Department of Pharmacology, School of Medicine, Chungnam National University, Daejeon 301-131, Republic of Korea
| | - Mohamed Asaduzzaman Sikder
- Department of Pharmacology, School of Medicine, Chungnam National University, Daejeon 301-131, Republic of Korea
| | - Hyun Jae Lee
- Department of Pharmacology, School of Medicine, Chungnam National University, Daejeon 301-131, Republic of Korea
| | - Jiho Ryu
- Department of Pharmacology, School of Medicine, Chungnam National University, Daejeon 301-131, Republic of Korea
| | - Choong Jae Lee
- Department of Pharmacology, School of Medicine, Chungnam National University, Daejeon 301-131, Republic of Korea
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Yoon YP, Ryu J, Park SH, Lee HJ, Lee S, Lee SK, Kim JO, Hong JH, Seok JH, Lee CJ. Effects of Lobetyolin, Lobetyol and Methyl linoleate on Secretion, Production and Gene Expression of MUC5AC Mucin from Airway Epithelial Cells. Tuberc Respir Dis (Seoul) 2014; 77:203-8. [PMID: 25473407 PMCID: PMC4250919 DOI: 10.4046/trd.2014.77.5.203] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Revised: 07/15/2014] [Accepted: 08/21/2014] [Indexed: 11/24/2022] Open
Abstract
Background In this study, we investigated whether lobetyolin, lobetyol, and methyl linoleate derived from Codonopsis pilosula affect MUC5AC mucin secretion, production, and gene expression from airway epithelial cells. Methods Confluent NCI-H292 cells were pretreated with lobetyolin, lobetyol, or methyl linoleate for 30 minutes and then stimulated with phorbol 12-myristate 13-acetate (PMA) for 24 hours. The MUC5AC mucin gene expression, and mucin protein production and secretion were measured by reverse transcription polymerase chain reaction and enzyme-linked immunosorbent assay, respectively. Results Lobetyolin, lobetyol, and methyl linoleate inhibited the gene expression of MUC5AC mucin induced by PMA; lobetyolin did not affect PMA-induced MUC5AC mucin production. However, lobetyol and methyl linoleate inhibited the production of MUC5AC mucin; lobetyolin and lobetyol did not significantly affect PMA-induced MUC5AC mucin secretion from NCI-H292 cells. However, methyl linoleate decreased the MUC5AC mucin secretion. Conclusion These results suggest that among the three compounds, methyl linoleate can regulate gene expression, production, and secretion of MUC5AC mucin by directly acting on the airway epithelial cells.
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Affiliation(s)
- Yong Pill Yoon
- Department of Pharmacology, Chungnam National University School of Medicine, Daejeon, Korea
| | - Jiho Ryu
- Department of Pharmacology, Chungnam National University School of Medicine, Daejeon, Korea
| | - Su Hyun Park
- Department of Pharmacology, Chungnam National University School of Medicine, Daejeon, Korea
| | - Hyun Jae Lee
- Department of Pharmacology, Chungnam National University School of Medicine, Daejeon, Korea
| | - Seungho Lee
- Department of Pharmacy, College of Pharmacy, Yeungnam University, Daegu, Korea
| | - Sang Kook Lee
- Department of Pharmacy, College of Pharmacy, Seoul National University, Seoul, Korea
| | - Ju-Ock Kim
- Pulmonology Section, Department of Internal Medicine, Chungnam National University Hospital, Daejeon, Korea
| | - Jang-Hee Hong
- Department of Pharmacology, Chungnam National University School of Medicine, Daejeon, Korea
| | - Jeong Ho Seok
- Department of Pharmacology, Chungnam National University School of Medicine, Daejeon, Korea
| | - Choong Jae Lee
- Department of Pharmacology, Chungnam National University School of Medicine, Daejeon, Korea
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Rubin BK, Priftis KN, Schmidt HJ, Henke MO. Secretory hyperresponsiveness and pulmonary mucus hypersecretion. Chest 2014; 146:496-507. [PMID: 25091755 DOI: 10.1378/chest.13-2609] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
The term bronchial hyperresponsiveness is generally used to describe a heightened airway smooth muscle bronchoconstrictor response measured by bronchoprovocation testing. However, the airway also responds to inflammation or bronchoprovocation with increased mucus secretion. We use the term "secretory hyperresponsiveness" to mean increased mucus secretion either intrinsically or in response to bronchoprovocation. This is not the same as retained phlegm or sputum. Unlike smooth muscle contraction, which is rapidly reversible using a bronchodilator, mucus hypersecretion produces airflow limitation that reverses more slowly and depends upon secretion clearance from the airway. Certain groups of patients appear to have greater mucus secretory response, including those with middle lobe syndrome, cough-dominant ("cough-variant") asthma, and severe asthma. Secretory hyperresponsiveness also is a component of forms of lung cancer associated with bronchorrhea. An extreme form of secretory hyperresponsiveness may lead to plastic bronchitis, a disease characterized by rigid branching mucus casts that obstruct the airway. Secretory hyperresponsiveness and mucus hypersecretion appear to be related to activation of the extracellular-regulated kinase 1/2, signaling through the epidermal growth factor receptor, or secretory phospholipases A2. Recognizing secretory hyperresponsiveness as a distinct clinical entity may lead to more effective and targeted therapy for these diseases.
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Affiliation(s)
- Bruce K Rubin
- Department of Pediatrics, School of Medicine, Virginia Commonwealth University, Richmond, VA.
| | - Kostas N Priftis
- Pediatric Pulmonary Unit, Third Department of Paediatrics, University of Athens School of Medicine, University General Hospital Attikon, Athens, Greece
| | - H Joel Schmidt
- Department of Pediatrics, School of Medicine, Virginia Commonwealth University, Richmond, VA
| | - Markus O Henke
- Department of Pulmonary Medicine, Philipps-Universität Marburg, Marburg, Germany
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Kumar M, Seeger W, Voswinckel R. Senescence-associated secretory phenotype and its possible role in chronic obstructive pulmonary disease. Am J Respir Cell Mol Biol 2014; 51:323-33. [PMID: 25171460 DOI: 10.1165/rcmb.2013-0382ps] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a major disease of the lungs. It primarily occurs after a prolonged period of cigarette smoking. Chronic inflammation of airways and the alveolar space as well as lung tissue destruction are the hallmarks of COPD. Recently it has been shown that cellular senescence might play a role in the pathogenesis of COPD. Cellular senescence comprises signal transduction program, leading to irreversible cell cycle arrest. The growth arrest in senescence can be triggered by many different mechanisms, including DNA damage and its recognition by cellular sensors, leading to the activation of cell cycle checkpoint responses and activation of DNA repair machinery. Senescence can be induced by several genotoxic factors apart from telomere attrition. When senescence induction is based on DNA damage, senescent cells display a unique phenotype, which has been termed "senescence-associated secretory phenotype" (SASP). SASP may be an important driver of chronic inflammation and therefore may be part of a vicious cycle of inflammation, DNA damage, and senescence. This research perspective aims to showcase cellular senescence with relevance to COPD and the striking similarities between the mediators and secretory phenotype in COPD and SASP.
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Affiliation(s)
- Manish Kumar
- 1 Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany; and
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121
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Brechbuhl HM, Li B, Smith RW, Reynolds SD. Epidermal growth factor receptor activity is necessary for mouse basal cell proliferation. Am J Physiol Lung Cell Mol Physiol 2014; 307:L800-10. [PMID: 25217659 DOI: 10.1152/ajplung.00201.2014] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
ERB family receptors (EGFR, ERB-B2, ERB-B3, and ERB-B4) regulate epithelial cell function in many tissue types. In the human airway epithelium, changes in ERB receptor expression are associated with epithelial repair defects. However, the specific role(s) played by ERB receptors in repair have not been determined. We aimed to determine whether ERB receptors regulate proliferation of the tracheobronchial progenitor, the basal cell. Receptor tyrosine kinase arrays were used to evaluate ERB activity in normal and naphthalene (NA)-injured mouse trachea and in air-liquid interface cultures. Roles for epidermal growth factor (EGF), EGFR, and ERB-B2 in basal cell proliferation were evaluated in vitro. NA injury and transgenic expression of an EGFR-dominant negative (DN) receptor were used to evaluate roles for EGFR signaling in vivo. EGFR and ERB-B2 were active in normal and NA-injured trachea and were the only active ERB receptors detected in proliferating basal cells in vitro. EGF was necessary for basal cell proliferation in vitro. The EGFR inhibitor, AG1478, decreased proliferation by 99, and the Erb-B2 inhibitor, AG825, decreased proliferation by ∼66%. In vivo, EGFR-DN expression in basal cells significantly decreased basal cell proliferation after NA injury. EGF and EGFR are necessary for basal cell proliferation. The EGFR/EGFR homo- and the EGFR/ERB-B2 heterodimer account for ∼34 and 66%, respectively, of basal cell proliferation in vitro. Active EGFR is necessary for basal cell proliferation after NA injury. We conclude that EGFR activation is necessary for mouse basal cell proliferation and normal epithelial repair.
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Affiliation(s)
| | - Bilan Li
- Department of Pediatrics, National Jewish Health, Denver, Colorado
| | - Russell W Smith
- Department of Pediatrics, National Jewish Health, Denver, Colorado
| | - Susan D Reynolds
- Department of Pediatrics, National Jewish Health, Denver, Colorado
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Lee HJ, Ryu J, Park SH, Woo ER, Kim AR, Lee SK, Kim YS, Kim JO, Hong JH, Lee CJ. Effects of Morus alba L. and Natural Products Including Morusin on In Vivo Secretion and In Vitro Production of Airway MUC5AC Mucin. Tuberc Respir Dis (Seoul) 2014; 77:65-72. [PMID: 25237377 PMCID: PMC4165662 DOI: 10.4046/trd.2014.77.2.65] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Revised: 03/05/2014] [Accepted: 05/21/2014] [Indexed: 11/24/2022] Open
Abstract
Background It is valuable to find the potential activity of regulating the excessive mucin secretion by the compounds derived from various medicinal plants. We investigated whether aqueous extract of the root bark of Morus alba L. (AMA), kuwanon E, kuwanon G, mulberrofuran G, and morusin significantly affect the secretion and production of airway mucin using in vivo and in vitro experimental models. Methods Effect of AMA was examined on hypersecretion of airway mucin in sulfur dioxide-induced acute bronchitis in rats. Confluent NCI-H292 cells were pretreated with ethanolic extract, kuwanon E, kuwanon G, mulberrofuran G, or morusin for 30 minutes and then stimulated with phorbol 12-myristate 13-acetate (PMA) for 24 hours. The MUC5AC mucin secretion and production were measured by enzyme-linked immunosorbent assay. Results AMA stimulated the secretion of airway mucin in sulfur dioxide-induced bronchitis rat model; aqueous extract, ethanolic extract, kuwanon E, kuwanon G, mulberrofuran G and morusin inhibited the production of MUC5AC mucin induced by PMA from NCI-H292 cells, respectively. Conclusion These results suggest that extract of the root bark and the natural products derived from Morus alba L. can regulate the secretion and production of airway mucin and, at least in part, explains the folk use of extract of Morus alba L. as mucoregulators in diverse inflammatory pulmonary diseases.
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Affiliation(s)
- Hyun Jae Lee
- Department of Pharmacology, Chungnam National University School of Medicine, Daejeon, Korea
| | - Jiho Ryu
- Department of Pharmacology, Chungnam National University School of Medicine, Daejeon, Korea
| | - Su Hyun Park
- Department of Pharmacology, Chungnam National University School of Medicine, Daejeon, Korea
| | - Eun-Rhan Woo
- Department of Pharmacy, College of Pharmacy, Chosun University, Gwangju, Korea
| | - A Ryun Kim
- Department of Pharmacy, College of Pharmacy, Chosun University, Gwangju, Korea
| | - Sang Kook Lee
- Department of Pharmacy, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Korea
| | - Yeong Shik Kim
- Department of Pharmacy, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Korea
| | - Ju-Ock Kim
- Pulmonology Section, Department of Internal Medicine, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
| | - Jang-Hee Hong
- Department of Pharmacology, Chungnam National University School of Medicine, Daejeon, Korea
| | - Choong Jae Lee
- Department of Pharmacology, Chungnam National University School of Medicine, Daejeon, Korea
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Abstract
The clinical manifestations of asthma are caused by obstruction of the conducting airways of the lung. Two airway cell types are critical for asthma pathogenesis: epithelial cells and smooth muscle cells. Airway epithelial cells, which are the first line of defense against inhaled pathogens and particles, initiate airway inflammation and produce mucus, an important contributor to airway obstruction. The other main cause of airway obstruction is contraction of airway smooth muscle. Complementary experimental approaches involving cultured cells, animal models, and human clinical studies have provided many insights into diverse mechanisms that contribute to airway epithelial and smooth muscle cell pathology in this complex disease.
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Affiliation(s)
- David J Erle
- Lung Biology Center and Department of Medicine, University of California, San Francisco, San Francisco, CA 94143
| | - Dean Sheppard
- Lung Biology Center and Department of Medicine, University of California, San Francisco, San Francisco, CA 94143
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Skuland T, Øvrevik J, Låg M, Schwarze P, Refsnes M. Silica nanoparticles induce cytokine responses in lung epithelial cells through activation of a p38/TACE/TGF-α/EGFR-pathway and NF-κΒ signalling. Toxicol Appl Pharmacol 2014; 279:76-86. [DOI: 10.1016/j.taap.2014.05.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 05/11/2014] [Accepted: 05/12/2014] [Indexed: 11/25/2022]
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Tam A, Wadsworth S, Dorscheid D, Man SFP, Sin DD. Estradiol increases mucus synthesis in bronchial epithelial cells. PLoS One 2014; 9:e100633. [PMID: 24964096 PMCID: PMC4070981 DOI: 10.1371/journal.pone.0100633] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Accepted: 05/29/2014] [Indexed: 12/29/2022] Open
Abstract
Airway epithelial mucus hypersecretion and mucus plugging are prominent pathologic features of chronic inflammatory conditions of the airway (e.g. asthma and cystic fibrosis) and in most of these conditions, women have worse prognosis compared with male patients. We thus investigated the effects of estradiol on mucus expression in primary normal human bronchial epithelial cells from female donors grown at an air liquid interface (ALI). Treatment with estradiol in physiological ranges for 2 weeks caused a concentration-dependent increase in the number of PAS-positive cells (confirmed to be goblet cells by MUC5AC immunostaining) in ALI cultures, and this action was attenuated by estrogen receptor beta (ER-β) antagonist. Protein microarray data showed that nuclear factor of activated T-cell (NFAT) in the nuclear fraction of NHBE cells was increased with estradiol treatment. Estradiol increased NFATc1 mRNA and protein in ALI cultures. In a human airway epithelial (1HAE0) cell line, NFATc1 was required for the regulation of MUC5AC mRNA and protein. Estradiol also induced post-translational modification of mucins by increasing total fucose residues and fucosyltransferase (FUT-4, -5, -6) mRNA expression. Together, these data indicate a novel mechanism by which estradiol increases mucus synthesis in the human bronchial epithelium.
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Affiliation(s)
- Anthony Tam
- The UBC James Hogg Research Centre, Providence Heart + Lung Centre & Department of Medicine, University of British Columbia (UBC), Vancouver, British Columbia, Canada
| | - Samuel Wadsworth
- The UBC James Hogg Research Centre, Providence Heart + Lung Centre & Department of Medicine, University of British Columbia (UBC), Vancouver, British Columbia, Canada
| | - Delbert Dorscheid
- The UBC James Hogg Research Centre, Providence Heart + Lung Centre & Department of Medicine, University of British Columbia (UBC), Vancouver, British Columbia, Canada
| | - Shu-Fan Paul Man
- The UBC James Hogg Research Centre, Providence Heart + Lung Centre & Department of Medicine, University of British Columbia (UBC), Vancouver, British Columbia, Canada
| | - Don D. Sin
- The UBC James Hogg Research Centre, Providence Heart + Lung Centre & Department of Medicine, University of British Columbia (UBC), Vancouver, British Columbia, Canada
- * E-mail:
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Wang L, Cao H, Liu L, Wang B, Walker WA, Acra SA, Yan F. Activation of epidermal growth factor receptor mediates mucin production stimulated by p40, a Lactobacillus rhamnosus GG-derived protein. J Biol Chem 2014; 289:20234-44. [PMID: 24895124 DOI: 10.1074/jbc.m114.553800] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The mucus layer coating the gastrointestinal tract serves as the first line of intestinal defense against infection and injury. Probiotics promote mucin production by goblet cells in the intestine. p40, a Lactobacillus rhamnosus GG-derived soluble protein, has been shown to transactivate the EGF receptor (EGFR) in intestinal epithelial cells, which is required for inhibition of apoptosis and preservation of barrier function in the colon, thereby ameliorating intestinal injury and colitis. Because activation of EGFR has been shown to up-regulate mucin production in goblet cells, the purpose of this study was to investigate the effects and mechanisms of p40 regulation of mucin production. p40 activated EGFR and its downstream target, Akt, in a concentration-dependent manner in LS174T cells. p40 stimulated Muc2 gene expression and mucin production in LS174T cells, which were abolished by inhibition of EGFR kinase activity, down-regulation of EGFR expression by EGFR siRNA transfection, or suppression of Akt activation. Treatment with p40 increased mucin production in the colonic epithelium, thus thickening the mucus layer in the colon of wild type, but not of Egfr(wa5) mice, which have a dominant negative mutation in the EGFR kinase domain. Furthermore, inhibition of mucin-type O-linked glycosylation suppressed the effect of p40 on increasing mucin production and protecting intestinal epithelial cells from TNF-induced apoptosis in colon organ culture. Thus, these results suggest that p40-stimulated activation of EGFR mediates up-regulation of mucin production, which may contribute to the mechanisms by which p40 protects the intestinal epithelium from injury.
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Affiliation(s)
- Lihong Wang
- From the Department of Pediatrics, Division of Gastroenterology, Hepatology and Nutrition, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Hailong Cao
- the Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin 300052, China, and
| | - Liping Liu
- From the Department of Pediatrics, Division of Gastroenterology, Hepatology and Nutrition, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Bangmao Wang
- the Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin 300052, China, and
| | - W Allan Walker
- the Mucosal Immunology and Biology Research Center, Massachusetts General Hospital, Harvard University Medical School, Boston, Massachusetts 02114
| | - Sari A Acra
- From the Department of Pediatrics, Division of Gastroenterology, Hepatology and Nutrition, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Fang Yan
- From the Department of Pediatrics, Division of Gastroenterology, Hepatology and Nutrition, Vanderbilt University Medical Center, Nashville, Tennessee 37232,
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Martin C, Frija-Masson J, Burgel PR. Targeting Mucus Hypersecretion: New Therapeutic Opportunities for COPD? Drugs 2014; 74:1073-89. [DOI: 10.1007/s40265-014-0235-3] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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128
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Inhibition of E-Cadherin Dependent Cell-Cell Contact Promotes MUC5AC Mucin Production through the Activation of Epidermal Growth Factor Receptors. Biosci Biotechnol Biochem 2014; 75:688-93. [DOI: 10.1271/bbb.100830] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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129
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Yageta Y, Ishii Y, Morishima Y, Ano S, Ohtsuka S, Matsuyama M, Takeuchi K, Itoh K, Yamamoto M, Hizawa N. Carbocisteine Reduces Virus-Induced Pulmonary Inflammation in Mice Exposed to Cigarette Smoke. Am J Respir Cell Mol Biol 2014; 50:963-73. [DOI: 10.1165/rcmb.2012-0292oc] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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130
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Iwashita J, Ito Y, Yokoo M, Takahashi S, Murata J. Akt induces down regulation of MUC5AC production in NCI-H292 human airway epithelial cells cultured on extracellular matrix. Biosci Biotechnol Biochem 2014; 78:212-21. [PMID: 25036673 DOI: 10.1080/09168451.2014.877829] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
MUC5AC mucin overproduction is a key feature of asthma as contributes to airway obstruction. The production of MUC5AC is regulated in part by signals from extracellular matrix via integrin pathways, but it remains largely unclear. We investigated the role of Akt, a typical signal transducer in the integrin pathway, in the regulation of MUC5AC production. When NCI-H292 human airway epithelial cells were cultured on laminin or Matrigel, we found that the activity of Akt was suppressed, as compared to control cells with upregulated MUC5AC production. In contrast, Akt was activated in cells cultured on type IV collagen with downregulated MUC5AC production. The Akt inhibitor induced upregulation of MUC5AC. In contrast, overexpression of active Akt induced downregulation of MUC5AC production. These results suggest that a signal from laminin or Matrigel induces upregulation of MUC5AC by suppressing Akt activity, whereas a signal from type IV collagen induces downregulation of MUC5AC, mediated by Akt activation.
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Affiliation(s)
- Jun Iwashita
- a Faculty of Bioresource Sciences, Akita Prefectural University , Akita , Japan
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131
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Lee HJ, Ryu J, Park SH, Seo EK, Han AR, Lee SK, Kim YS, Hong JH, Seok JH, Lee CJ. Suppressive effects of coixol, glyceryl trilinoleate and natural products derived from Coix Lachryma-Jobi var. ma-yuen on gene expression, production and secretion of airway MUC5AC mucin. Arch Pharm Res 2014; 38:620-7. [DOI: 10.1007/s12272-014-0377-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Accepted: 03/23/2014] [Indexed: 11/30/2022]
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132
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Lee H, Kim SR, Oh Y, Cho SH, Schleimer RP, Lee YC. Targeting insulin-like growth factor-I and insulin-like growth factor-binding protein-3 signaling pathways. A novel therapeutic approach for asthma. Am J Respir Cell Mol Biol 2014; 50:667-77. [PMID: 24219511 PMCID: PMC5455301 DOI: 10.1165/rcmb.2013-0397tr] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Accepted: 11/05/2013] [Indexed: 02/04/2023] Open
Abstract
Insulin-like growth factor (IGF)-I has been recognized to play critical roles in the pathogenesis of asthma, whereas IGF-binding protein (IGFBP)-3 blocks crucial physiologic manifestations of asthma. IGF-I enhances subepithelial fibrosis, airway inflammation, airway hyperresponsiveness, and airway smooth muscle hyperplasia by interacting with various inflammatory mediators and complex signaling pathways, such as intercellular adhesion molecule-1, and the hypoxia-inducible factor/vascular endothelial growth factor axis. On the other hand, IGFBP-3 decreases airway inflammation and airway hyperresponsiveness through IGFBP-3 receptor-mediated activation of caspases, which subsequently inhibits NF-κB signaling pathway. It also inhibits the IGF-I/hypoxia-inducible factor/vascular endothelial growth factor axis via IGF-I-dependent and/or IGF-I-independent mechanisms. This Translational Review summarizes the role of IGF-I and IGFBP-3 in the context of allergic airway disease, and discusses the therapeutic potential of various strategies targeting the IGF-I and IGFBP-3 signaling pathways for the management of asthma.
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Affiliation(s)
- Hyun Lee
- Department of Internal Medicine and Research Center for Pulmonary Disorders, Chonbuk National University Medical School, Jeonju, South Korea
| | - So Ri Kim
- Department of Internal Medicine and Research Center for Pulmonary Disorders, Chonbuk National University Medical School, Jeonju, South Korea
| | - Youngman Oh
- Department of Pathology, Medical College of Virginia, Virginia Commonwealth University, Richmond, Virginia; and
| | - Seong Ho Cho
- Division of Allergy–Immunology, Department of Medicine, Northwestern University, Feinberg School of Medicine, Chicago, Illinois
| | - Robert P. Schleimer
- Division of Allergy–Immunology, Department of Medicine, Northwestern University, Feinberg School of Medicine, Chicago, Illinois
| | - Yong Chul Lee
- Department of Internal Medicine and Research Center for Pulmonary Disorders, Chonbuk National University Medical School, Jeonju, South Korea
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Pahuja M, Shepherd RW, Lyckholm LJ. The use of octreotide to manage symptoms of bronchorrhea: a case report. J Pain Symptom Manage 2014; 47:814-8. [PMID: 24035070 PMCID: PMC4343310 DOI: 10.1016/j.jpainsymman.2013.06.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Revised: 06/03/2013] [Accepted: 06/14/2013] [Indexed: 02/01/2023]
Abstract
Octreotide, a synthetic analogue of the hormone somatostatin, is primarily used in palliative medicine because of its antisecretory effect and has been shown to be effective in the management of bowel obstruction, nausea, and diarrhea. Octreotide also has been successfully used for the management of bronchorrhea in both inpatient and outpatient settings. We report the case of a 47-year-old female with a history of bronchioloalveolar cell carcinoma whose copious bronchial secretions were controlled with octreotide. Octreotide should be further evaluated as a first-line treatment for bronchorrhea.
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Affiliation(s)
- Meera Pahuja
- Division of Hematology/Oncology and Palliative Care, Department of Internal Medicine, Virginia Commonwealth University, Richmond, Virginia, USA.
| | - Ray W Shepherd
- Division of Pulmonary and Critical Care, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Laurel J Lyckholm
- Division of Hematology/Oncology and Palliative Care, Department of Internal Medicine, Virginia Commonwealth University, Richmond, Virginia, USA
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Sikder MA, Lee HJ, Ryu J, Park SH, Kim JO, Hong JH, Seok JH, Lee CJ. Apigenin and Wogonin Regulate Epidermal Growth Factor Receptor Signaling Pathway Involved in MUC5AC Mucin Gene Expression and Production from Cultured Airway Epithelial Cells. Tuberc Respir Dis (Seoul) 2014; 76:120-6. [PMID: 24734099 PMCID: PMC3982238 DOI: 10.4046/trd.2014.76.3.120] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 12/30/2013] [Accepted: 01/23/2014] [Indexed: 12/17/2022] Open
Abstract
Background We investigated whether wogonin and apigenin significantly affect the epidermal growth factor receptor (EGFR) signaling pathway involved in MUC5AC mucin gene expression, and production from cultured airway epithelial cells; this was based on our previous report that apigenin and wogonin suppressed MUC5AC mucin gene expression and production from human airway epithelial cells. Methods Confluent NCI-H292 cells were pretreated with wogonin or apigenin for 15 minutes or 24 hours and then stimulated with epidermal growth factor (EGF) for 24 hours or the indicated periods. Results We found that incubation of NCI-H292 cells with wogonin or apigenin inhibited the phosphorylation of EGFR. The downstream signals of EGFR such as phosphorylation of MEK1/2 and ERK1/2 were also inhibited by wogonin or apigenin. Conclusion The results suggest that wogonin and apigenin inhibits EGFR signaling pathway, which may explain how they inhibit MUC5AC mucin gene expression and production induced by EGF.
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Affiliation(s)
- Md Asaduzzaman Sikder
- Department of Pharmacology, Chungnam National University School of Medicine, Daejeon, Korea
| | - Hyun Jae Lee
- Department of Pharmacology, Chungnam National University School of Medicine, Daejeon, Korea
| | - Jiho Ryu
- Department of Pharmacology, Chungnam National University School of Medicine, Daejeon, Korea
| | - Su Hyun Park
- Department of Pharmacology, Chungnam National University School of Medicine, Daejeon, Korea
| | - Ju-Ock Kim
- Pulmonology Section, Department of Internal Medicine, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
| | - Jang-Hee Hong
- Department of Pharmacology, Chungnam National University School of Medicine, Daejeon, Korea
| | - Jeong Ho Seok
- Department of Pharmacology, Chungnam National University School of Medicine, Daejeon, Korea
| | - Choong Jae Lee
- Department of Pharmacology, Chungnam National University School of Medicine, Daejeon, Korea
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Ryu J, Lee HJ, Park SH, Kim J, Lee D, Lee SK, Kim YS, Hong JH, Seok JH, Lee CJ. Effects of the root of Platycodon grandiflorum on airway mucin hypersecretion in vivo and platycodin D(3) and deapi-platycodin on production and secretion of airway mucin in vitro. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2014; 21:529-533. [PMID: 24290472 DOI: 10.1016/j.phymed.2013.10.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 09/03/2013] [Accepted: 10/05/2013] [Indexed: 06/02/2023]
Abstract
We investigated whether aqueous extract of the root of Platycodon grandiflorum A. de Candolle (APG), platycodinD(3) and deapi-platycodin significantly affect the production and secretion of airway mucin using in vivo and in vitro experimental models. Effect of APG was checked on hypersecretion of pulmonary mucin in sulfur dioxide-induced bronchitis in rats. Confluent NCI-H292 cells were pretreated with platycodinD(3) or deapi-platycodin for 30min and then stimulated with PMA (phorbol 12-myristate 13-acetate) for 24h. The MUC5AC mucin production and secretion were measured by ELISA. The results were as follows: (1) APG stimulated the secretion of airway mucin in sulfur dioxide-induced bronchitis rat model; (2) platycodinD(3) and deapi-platycodin inhibited the production of MUC5AC mucin induced by PMA from NCI-H292 cells, respectively; (3) however, platycodinD(3) and deapi-platycodin did not inhibit but stimulated the secretion of MUC5AC mucin induced by PMA from NCI-H292 cells, respectively. This result suggests that aqueous extract of P. grandiflorum A. de Candolle and the two natural products derived from it, platycodinD(3) and deapi-platycodin, can regulate the production and secretion of airway mucin and, at least in part, explains the traditional use of aqueous extract of P. grandiflorum A. de Candolle as expectorants in diverse inflammatory pulmonary diseases.
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Affiliation(s)
- Jiho Ryu
- Department of Pharmacology, School of Medicine, Chungnam National University, Daejeon 303-131, Republic of Korea
| | - Hyun Jae Lee
- Department of Pharmacology, School of Medicine, Chungnam National University, Daejeon 303-131, Republic of Korea
| | - Su Hyun Park
- Department of Pharmacology, School of Medicine, Chungnam National University, Daejeon 303-131, Republic of Korea
| | - Jinwoong Kim
- Department of Pharmacy, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 151-742, Republic of Korea
| | - Dongho Lee
- Division of Biotechnology, College of Life Sciences & Biotechnology, Korea University, Seoul 136-713, Republic of Korea
| | - Sang Kook Lee
- Department of Pharmacy, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 151-742, Republic of Korea
| | - Yeong Shik Kim
- Department of Pharmacy, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 151-742, Republic of Korea
| | - Jang-Hee Hong
- Department of Pharmacology, School of Medicine, Chungnam National University, Daejeon 303-131, Republic of Korea
| | - Jeong Ho Seok
- Department of Pharmacology, School of Medicine, Chungnam National University, Daejeon 303-131, Republic of Korea
| | - Choong Jae Lee
- Department of Pharmacology, School of Medicine, Chungnam National University, Daejeon 303-131, Republic of Korea.
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136
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TNF induces the expression of the sialyltransferase ST3Gal IV in human bronchial mucosa via MSK1/2 protein kinases and increases FliD/sialyl-Lewis(x)-mediated adhesion of Pseudomonas aeruginosa. Biochem J 2014; 457:79-87. [PMID: 24099577 DOI: 10.1042/bj20130989] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We have shown previously that the pro-inflammatory cytokine TNF (tumour necrosis factor) could drive sLe(x) (sialyl-Lewis(x)) biosynthesis through the up-regulation of the BX transcript isoform of the ST3GAL4 (ST3 β-galactoside α-2,3-sialyltransferase 4) sialyltransferase gene in lung epithelial cells and human bronchial mucosa. In the present study, we show that the TNF-induced up-regulation of the ST3GAL4 BX transcript is mediated by MSK1/2 (mitogen- and stress-activated kinase 1/2) through the ERK (extracellular-signal-regulated kinase) and p38 MAPK (mitogen-activated protein kinase) pathways, and increases sLe(x) expression on high-molecular-mass glycoproteins in inflamed airway epithelium. We also show that the TNF-induced sLe(x) expression increases the adhesion of the Pseudomonas aeruginosa PAO1 and PAK strains to lung epithelial cells in a FliD-dependent manner. These results suggest that ERK and p38 MAPK, and the downstream kinase MSK1/2, should be considered as potential targets to hamper inflammation, bronchial mucin glycosylation changes and P. aeruginosa binding in the lung of patients suffering from lung diseases such as chronic bronchitis or cystic fibrosis.
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137
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Nasal epithelial cells can act as a physiological surrogate for paediatric asthma studies. PLoS One 2014; 9:e85802. [PMID: 24475053 PMCID: PMC3903489 DOI: 10.1371/journal.pone.0085802] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Accepted: 12/02/2013] [Indexed: 01/04/2023] Open
Abstract
Introduction Differentiated paediatric epithelial cells can be used to study the role of epithelial cells in asthma. Nasal epithelial cells are easier to obtain and may act as a surrogate for bronchial epithelium in asthma studies. We assessed the suitability of nasal epithelium from asthmatic children to be a surrogate for bronchial epithelium using air-liquid interface cultures. Methods Paired nasal and bronchial epithelial cells from asthmatic children (n = 9) were differentiated for 28 days under unstimulated and IL-13-stimulated conditions. Morphological and physiological markers were analysed using immunocytochemistry, transepithelial-electrical-resistance, Quantitative Real-time-PCR, ELISA and multiplex cytokine/chemokine analysis. Results Physiologically, nasal epithelial cells from asthmatic children exhibit similar cytokine responses to stimulation with IL-13 compared with paired bronchial epithelial cells. Morphologically however, nasal epithelial cells differed significantly from bronchial epithelial cells from asthmatic patients under unstimulated and IL-13-stimulated conditions. Nasal epithelial cells exhibited lower proliferation/differentiation rates and lower percentages of goblet and ciliated cells when unstimulated, while exhibiting a diminished and varied response to IL-13. Conclusions We conclude that morphologically, nasal epithelial cells would not be a suitable surrogate due to a significantly lower rate of proliferation and differentiation of goblet and ciliated cells. Physiologically, nasal epithelial cells respond similarly to exogenous stimulation with IL-13 in cytokine production and could be used as a physiological surrogate in the event that bronchial epithelial cells are not available.
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138
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Vallath S, Hynds RE, Succony L, Janes SM, Giangreco A. Targeting EGFR signalling in chronic lung disease: therapeutic challenges and opportunities. Eur Respir J 2014; 44:513-22. [PMID: 24435005 DOI: 10.1183/09031936.00146413] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Chronic respiratory diseases, including pulmonary fibrosis, chronic obstructive pulmonary disease (COPD) and lung cancer, are the second leading cause of death among Europeans. Despite this, there have been only a few therapeutic advances in these conditions over the past 20 years. In this review we provide evidence that targeting the epidermal growth factor receptor (EGFR) signalling pathway may represent a novel therapeutic panacea for treating chronic lung disease. Using evidence from human patient samples, transgenic animal models, and cell and molecular biology studies we highlight the roles of this signalling pathway in lung development, homeostasis, repair, and disease ontogeny. We identify mechanisms underlying lung EGFR pathway regulation and suggest how targeting these mechanisms using new and existing therapies has the potential to improve future lung cancer, COPD and pulmonary fibrosis patient outcomes.
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Affiliation(s)
- Sabari Vallath
- Lungs for Living Research Centre, Division of Medicine, University College London, UK
| | - Robert E Hynds
- Lungs for Living Research Centre, Division of Medicine, University College London, UK
| | - Laura Succony
- Lungs for Living Research Centre, Division of Medicine, University College London, UK
| | - Sam M Janes
- Lungs for Living Research Centre, Division of Medicine, University College London, UK
| | - Adam Giangreco
- Lungs for Living Research Centre, Division of Medicine, University College London, UK
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Park SH, Lee HJ, Ryu J, Son KH, Kwon SY, Lee SK, Kim YS, Hong JH, Seok JH, Lee CJ. Effects of ophiopogonin D and spicatoside A derived from Liriope Tuber on secretion and production of mucin from airway epithelial cells. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2014; 21:172-176. [PMID: 24060215 DOI: 10.1016/j.phymed.2013.08.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 07/07/2013] [Accepted: 08/09/2013] [Indexed: 06/02/2023]
Abstract
In the present study, we investigated whether aqueous extract of Liriope Tuber, ophiopogonin D and spicatoside A derived from Liriope Tuber affect basal or phorbol ester (phorbol 12-myristate 13-acetate, PMA)-induced airway mucin production and secretion from airway epithelial cells. Confluent NCI-H292 cells were treated with each agent for 24 h (basal production) or pretreated with each agent for 30 min and then stimulated with PMA for 24 h (PMA-induced production and secretion), respectively. MUC5AC airway mucin production and secretion were measured by ELISA. The results were as follows: (1) aqueous extract of Liriope Tuber stimulated basal mucin production and did not inhibit but increased PMA-induced mucin production; (2) ophiopogonin D and spicatoside A stimulated basal mucin production and did not inhibit but increased PMA-induced mucin production; (3) two compounds increased PMA-induced mucin secretion. These results suggest that ophiopogonin D and spicatoside A can increase mucin production and secretion, by directly acting on airway epithelial cells and, at least in part, explain the traditional use of aqueous extract of Liriope Tuber as expectorants in diverse inflammatory pulmonary diseases.
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Affiliation(s)
- Su Hyun Park
- Department of Pharmacology, School of Medicine, Chungnam National University, Daejeon 303-131, Republic of Korea
| | - Hyun Jae Lee
- Department of Pharmacology, School of Medicine, Chungnam National University, Daejeon 303-131, Republic of Korea
| | - Jiho Ryu
- Department of Pharmacology, School of Medicine, Chungnam National University, Daejeon 303-131, Republic of Korea
| | - Kun Ho Son
- Department of Food Science and Nutrition, Andong National University, Andong 760-749, Republic of Korea
| | - Sang Yong Kwon
- Department of Food Science and Nutrition, Andong National University, Andong 760-749, Republic of Korea
| | - Sang Kook Lee
- Department of Pharmacy, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Yeong Shik Kim
- Department of Pharmacy, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Jang-Hee Hong
- Department of Pharmacology, School of Medicine, Chungnam National University, Daejeon 303-131, Republic of Korea
| | - Jeong Ho Seok
- Department of Pharmacology, School of Medicine, Chungnam National University, Daejeon 303-131, Republic of Korea
| | - Choong Jae Lee
- Department of Pharmacology, School of Medicine, Chungnam National University, Daejeon 303-131, Republic of Korea.
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140
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Ryu J, Lee HJ, Park SH, Sikder MA, Kim JO, Hong JH, Seok JH, Lee CJ. Effect of Prunetin on TNF-α-Induced MUC5AC Mucin Gene Expression, Production, Degradation of IκB and Translocation of NF-κB p65 in Human Airway Epithelial Cells. Tuberc Respir Dis (Seoul) 2013; 75:205-9. [PMID: 24348668 PMCID: PMC3861376 DOI: 10.4046/trd.2013.75.5.205] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Revised: 10/10/2013] [Accepted: 10/15/2013] [Indexed: 12/31/2022] Open
Abstract
Background We investigated whether prunetin significantly affects tumor necrosis factor-α (TNF-α)-induced MUC5AC mucin gene expression, production, inhibitory kappa B (IκB) degradation and nuclear factor kappa B (NF-κB) p65 translocation in human airway epithelial cells. Methods Confluent NCI-H292 cells were pretreated with prunetin for 30 minutes and then stimulated with TNF-α for 24 hours or the indicated periods. MUC5AC mucin gene expression and mucin protein production were measured by reverse transcription polymerase chain reaction and enzyme-linked immunosorbent assay, respectively. The effect of prunetin on TNF-α-induced degradation of IκB and translocation of NF-κB p65 was investigated by western blot analysis. Results We found that incubation of NCI-H292 cells with prunetin significantly inhibited mucin production and down-regulated the MUC5AC gene expression induced by TNF-α. Prunetin inhibited TNF-α-induced degradation of IκB and translocation of NF-κB p65. Conclusion This result suggests that prunetin inhibits the NF-κB signaling pathway, which may explain its role in the inhibition of MUC5AC mucin gene expression and production regulated by the NF-κB signaling pathway.
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Affiliation(s)
- Jiho Ryu
- Department of Pharmacology, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
| | - Hyun Jae Lee
- Department of Pharmacology, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
| | - Su Hyun Park
- Department of Pharmacology, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
| | - Md Asaduzzaman Sikder
- Department of Pharmacology, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
| | - Ju-Ock Kim
- Department of Pharmacology, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea. ; Pulmonology Section, Department of Internal Medicine, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
| | - Jang-Hee Hong
- Department of Pharmacology, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
| | - Jeong Ho Seok
- Department of Pharmacology, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
| | - Choong Jae Lee
- Department of Pharmacology, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
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Gras D, Chanez P, Vachier I, Petit A, Bourdin A. Bronchial epithelium as a target for innovative treatments in asthma. Pharmacol Ther 2013; 140:290-305. [PMID: 23880290 DOI: 10.1016/j.pharmthera.2013.07.008] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Accepted: 07/10/2013] [Indexed: 01/03/2023]
Abstract
Increasing evidence of a critical role played by the bronchial epithelium in airway homeostasis is opening new therapeutic avenues. Its unique situation at the interface with the environment suggests that the subtle regulation orchestrated by the epithelium between tolerance and specific immune response might be impaired in asthma. Airway mucus is acting as a physical and a biological fluid between the environment and the epithelium, synergistically moved by the cilia. In asthma, excessive mucus production is a hallmark of airway remodeling. Since many years we tried to therapeutically target mucus hypersecretion, but actually this option is still not achieved. The present review discusses the dynamic processes regulating airway mucus production. Airway inflammation is central in current asthma management. Understanding of how the airway epithelium influences the TH2 paradigm in response to deleterious agents is improving. The multiple receptors expressed by the airway epithelium are the transducers of the biological signals induced by various invasive agents to develop the most adapted response. Airway remodeling is observed in severe chronic airway diseases and may result from ongoing disturbance of signal transduction and epithelial renewal. Chronic airway diseases such as asthma will require assessment of these epithelial abnormalities to identify phenotypic characteristics associated with predicting a clinical benefit for epithelial-directed therapies.
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Affiliation(s)
- Delphine Gras
- UMR INSERM U1067 CNRS 7333, Aix-Marseille University, Marseille, France
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Shaykhiev R, Zuo WL, Chao I, Fukui T, Witover B, Brekman A, Crystal RG. EGF shifts human airway basal cell fate toward a smoking-associated airway epithelial phenotype. Proc Natl Acad Sci U S A 2013; 110:12102-7. [PMID: 23818594 PMCID: PMC3718120 DOI: 10.1073/pnas.1303058110] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The airway epithelium of smokers acquires pathological phenotypes, including basal cell (BC) and/or goblet cell hyperplasia, squamous metaplasia, structural and functional abnormalities of ciliated cells, decreased number of secretoglobin (SCGB1A1)-expressing secretory cells, and a disordered junctional barrier. In this study, we hypothesized that smoking alters airway epithelial structure through modification of BC function via an EGF receptor (EGFR)-mediated mechanism. Analysis of the airway epithelium revealed that EGFR is enriched in airway BCs, whereas its ligand EGF is induced by smoking in ciliated cells. Exposure of BCs to EGF shifted the BC differentiation program toward the squamous and epithelial-mesenchymal transition-like phenotypes with down-regulation of genes related to ciliogenesis, secretory differentiation, and markedly reduced junctional barrier integrity, mimicking the abnormalities present in the airways of smokers in vivo. These data suggest that activation of EGFR in airway BCs by smoking-induced EGF represents a unique mechanism whereby smoking can alter airway epithelial differentiation and barrier function.
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Affiliation(s)
| | | | - IonWa Chao
- Department of Genetic Medicine, Weill Cornell Medical College, New York, NY 10065
| | - Tomoya Fukui
- Department of Genetic Medicine, Weill Cornell Medical College, New York, NY 10065
| | - Bradley Witover
- Department of Genetic Medicine, Weill Cornell Medical College, New York, NY 10065
| | - Angelika Brekman
- Department of Genetic Medicine, Weill Cornell Medical College, New York, NY 10065
| | - Ronald G. Crystal
- Department of Genetic Medicine, Weill Cornell Medical College, New York, NY 10065
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143
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144
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Liu C, Li Q, Zhou X, Kolosov VP, Perelman JM. Rhythmic pressure waves induce mucin5AC expression via an EGFR-mediated signaling pathway in human airway epithelial cells. DNA Cell Biol 2013; 32:423-9. [PMID: 23768102 DOI: 10.1089/dna.2013.2079] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Rhythmic pressure waves (RPW), mimicking the mechanical forces generated during normal breathing, play a key role in airway surface liquid (ASL) homeostasis. As a major component of ASL, we speculated that the mucin5AC (MUC5AC) expression must also be regulated by RPW. However, fewer researches have focused on this question. Therefore, our aim was to test the effect and mechanism of RPW on MUC5AC expression in cultured human bronchial epithelial cells. Compared with the relevant controls, the transcriptional level of MUC5AC and the protein expressions of MUC5AC, the phospho-epidermal growth factor receptor (p-EGFR), phospho-extracellular signal-related kinase (p-ERK), and phospho-Akt (p-Akt) were all significantly increased after mechanical stimulation. However, this effect could be significantly attenuated by transfecting with EGFR-siRNA. Similarly, pretreating with the inhibitor of ERK or phosphatidylinositol 3-kinases (PI3K)/Akt separately or jointly also significantly reduced MUC5AC expression. Collectively, these results indicate that RPW modulate MUC5AC expression via the EGFR-PI3K-Akt/ERK-signaling pathway in human bronchial epithelial cells.
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Affiliation(s)
- Chunyi Liu
- Division of Respiratory Medicine, Second Affiliated Hospital, Chongqing Medical University, Yuzhong District, Chongqing, China
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145
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Kokubun K, Pankajakshan D, Kim MJ, Agrawal DK. Differentiation of porcine mesenchymal stem cells into epithelial cells as a potential therapeutic application to facilitate epithelial regeneration. J Tissue Eng Regen Med 2013; 10:E73-83. [PMID: 23696537 DOI: 10.1002/term.1758] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2012] [Revised: 02/01/2013] [Accepted: 03/25/2013] [Indexed: 02/06/2023]
Abstract
Epithelial denudation is one of the characteristics of chronic asthma. To restore its functions, the airway epithelium has to rapidly repair the injuries and regenerate its structure and integrity. Mesenchymal stem cells (MSCs) have the ability to differentiate into many cell lineages. However, the differentiation of MSCs into epithelial cells has not been fully studied. Here, we examined the differentiation of MSCs into epithelial cells using three different media compositions with various growth supplementations. The MSCs were isolated from porcine bone marrow by density gradient centrifugation. The isolated MSCs were CD11(-) CD34(-) CD45(-) CD44(+) CD90(+) and CD105(+) by immunostaining and flow cytometry. MSCs were stimulated with EpiGRO (Millipore), BEpiCM (ScienCell) and AECGM (PromoCell) media for 5 and 10 days, and epithelial differentiation was assessed by qPCR (keratin 14, 18 and EpCAM), fluorometry (cytokeratin 7-8, cytokeratin 14-15-16-19 and EpCAM), western blot analysis (pancytokeratin, EpCAM) and flow cytometry (cytokeratin 7-8, cytokeratin 14-15-16-19 and EpCAM). The functional marker MUC1 was also assessed after 10 days of air-liquid interface (ALI) culture in optimized media. Cells cultured in BEpiCM containing fibroblast growth factor and prostaglandin E2 showed the highest expression of the epithelial markers: CK7-8 (85.90%); CK-14-15-16-19 (10.14%); and EpCAM (64.61%). The cells also expressed functional marker MUC1 after ALI culture. The differentiated MSCs when cultured in BEpiCM medium ex vivo in a bioreactor on a decellularized trachea for 10 days retained the epithelial-like phenotype. In conclusion, porcine bone marrow-derived MSCs demonstrate commitment to the epithelial lineage and might be a potential therapy for facilitating the repair of denuded airway epithelium.
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Affiliation(s)
- Kelsey Kokubun
- Center for Clinical and Translational Science and Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE, USA
| | - Divya Pankajakshan
- Center for Clinical and Translational Science and Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE, USA
| | - Min-Jung Kim
- Center for Clinical and Translational Science and Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE, USA
| | - Devendra K Agrawal
- Center for Clinical and Translational Science and Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE, USA
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146
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Parker JC, Thavagnanam S, Skibinski G, Lyons J, Bell J, Heaney LG, Shields MD. Chronic IL9 and IL-13 exposure leads to an altered differentiation of ciliated cells in a well-differentiated paediatric bronchial epithelial cell model. PLoS One 2013; 8:e61023. [PMID: 23671562 PMCID: PMC3650011 DOI: 10.1371/journal.pone.0061023] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Accepted: 03/05/2013] [Indexed: 11/18/2022] Open
Abstract
Asthma is a chronic inflammatory disease characterised by airways remodelling. In mouse models IL-9 and IL-13 have been implicated in airways remodelling including mucus hypersecretion and goblet cell hyperplasia. Their role, especially that of IL-9, has been much less studied in authentic human ex vivo models of the bronchial epithelium from normal and asthmatic children. We assessed the effects of IL-9, IL-13 and an IL-9/IL-13 combination, during differentiation of bronchial epithelial cells from normal (n = 6) and asthmatic (n = 8) children. Cultures were analysed for morphological markers and factors associated with altered differentiation (MUC5AC, SPDEF and MMP-7). IL-9, IL-9/IL-13 combination and IL-13 stimulated bronchial epithelial cells from normal children had fewer ciliated cells [14.8% (SD 8.9), p = 0.048, 12.4 (SD 6.1), p = 0.016 and 7.3% (SD 6.6), p = 0.031] respectively compared with unstimulated [(21.4% (SD 9.6)]. IL-9 stimulation had no effect on goblet cell number in either group whereas IL-9/IL-13 combination and IL-13 significantly increased goblet cell number [24.8% (SD 8.8), p = 0.02), 32.9% (SD 8.6), p = 0.007] compared with unstimulated normal bronchial cells [(18.6% (SD 6.2)]. All stimulations increased MUC5AC mRNA in bronchial epithelial cells from normal children and increased MUC5AC mucin secretion. MMP-7 localisation was dysregulated in normal bronchial epithelium stimulated with Th2 cytokines which resembled the unstimulated bronchial epithelium of asthmatic children. All stimulations resulted in a significant reduction in transepithelial electrical resistance values over time suggesting a role in altered tight junction formation. We conclude that IL-9 does not increase goblet cell numbers in bronchial epithelial cell cultures from normal or asthmatic children. IL-9 and IL-13 alone and in combination, reduce ciliated cell numbers and transepithelial electrical resistance during differentiation of normal epithelium, which clinically could inhibit mucociliary clearance and drive an altered repair mechanism. This suggests an alternative role for IL-9 in airways remodelling and reaffirms IL-9 as a potential therapeutic target.
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Affiliation(s)
- Jeremy C. Parker
- Centre for Infection and Immunity, Queen's University Belfast, Belfast, Northern Ireland
| | | | - Grzegorz Skibinski
- Centre for Infection and Immunity, Queen's University Belfast, Belfast, Northern Ireland
| | - Jeremy Lyons
- The Royal Hospitals, Belfast Health and Social Care Trust, Belfast, Northern Ireland
| | - Jennifer Bell
- Centre for Infection and Immunity, Queen's University Belfast, Belfast, Northern Ireland
| | - Liam G. Heaney
- Centre for Infection and Immunity, Queen's University Belfast, Belfast, Northern Ireland
- * E-mail:
| | - Michael D. Shields
- Centre for Infection and Immunity, Queen's University Belfast, Belfast, Northern Ireland
- Royal Belfast Hospital for Sick Children, Belfast Health and Social Care Trust, Belfast, Northern Ireland
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147
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Kondo M, Tamaoki J. [The cutting-edge of medicine; Management and therapy for airway mucus hypersecretion]. ACTA ACUST UNITED AC 2013; 101:3525-32. [PMID: 23356175 DOI: 10.2169/naika.101.3525] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mitsuko Kondo
- 1st Department of Medicine, Tokyo Women's Medical University School of Medicine, Japan
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148
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Boucherat O, Boczkowski J, Jeannotte L, Delacourt C. Cellular and molecular mechanisms of goblet cell metaplasia in the respiratory airways. Exp Lung Res 2013; 39:207-16. [DOI: 10.3109/01902148.2013.791733] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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149
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PGE2 induces MUC2 and MUC5AC expression in human intrahepatic biliary epithelial cells via EP4/p38MAPK activation. Ann Hepatol 2013. [DOI: 10.1016/s1665-2681(19)31012-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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150
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Siddiqui S, Novali M, Tsuchiya K, Hirota N, Geller BJ, McGovern TK, Risse PA, Jo T, Zeroual MA, Martin JG. The modulation of large airway smooth muscle phenotype and effects of epidermal growth factor receptor inhibition in the repeatedly allergen-challenged rat. Am J Physiol Lung Cell Mol Physiol 2013; 304:L853-62. [PMID: 23605002 DOI: 10.1152/ajplung.00047.2012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Allergen challenges induce airway hyperresponsiveness (AHR) and increased airway smooth muscle (ASM) mass in the sensitized rat. Whether the remodeled ASM changes its phenotype is uncertain. We examined, in sensitized Brown Norway rats, the effects of multiple ovalbumin (Ova) challenges on ASM remodeling and phenotype and the role of the epidermal growth factor receptor (EGFR) in these processes. Rats were sensitized with Ova and challenged three times at 5-day intervals with phosphate-buffered saline or Ova and pretreated with the EGFR inhibitor AG-1478 (5 mg/kg) or its vehicle dimethyl sulfoxide. Ova challenges increased ASM mass in all-sized airways and in large airway mRNA expression of smooth muscle myosin heavy chain (sm-MHC), assessed by laser capture. Myosin light chain kinase and the fast myosin isoform SM-B mRNA expressions were not affected. Ova induced AHR to methacholine, and, based on the constant-phase model, this was largely attributable to the small airways and lung derecruitment at 48 h that recovered by 1 wk. The EGFR ligands amphiregulin and heparin-binding epidermal growth factor (HB-EGF) were increased in bronchoalveolar lavage fluid at 48 h after Ova exposure. AG-1478 inhibited AHR and prevented ASM growth. Epithelial gene expression of EGFR, HB-EGF, matrix metalloproteinase (MMP)-9, Gro-α, and transforming growth factor-β was unaffected by Ova challenges. We conclude that EGFR drives remodeling of ASM, which results from repeated Ova challenge. Furthermore, the latter results in excessive small airway and, to a lesser degree, large airway narrowing to methacholine, and large airway gene expression of contractile protein is conserved.
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Affiliation(s)
- S Siddiqui
- Meakins-Christie Laboratories, Department of Medicine, McGill University, Montreal, Quebec, Canada
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