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Sun L, Peng B, Zhou J, Wang P, Mo Y, Xu G, Tao Y, Song H, Tang W, Jin M. Difference of Serum Cytokine Profile in Allergic Asthma Patients According to Disease Severity. J Asthma Allergy 2022; 15:315-326. [PMID: 35283636 PMCID: PMC8909512 DOI: 10.2147/jaa.s345759] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 02/14/2022] [Indexed: 11/23/2022] Open
Abstract
Purpose Allergic asthma is a heterogeneous disease with complex underlying mechanisms. Cytokines are key mediators in immune system and potential indicators of disease status. The aim of this study is to compare the difference of serum cytokine profile in allergic asthma patients with different disease severity and explore candidate biomarkers for disease monitoring and targeting therapeutic agents. Patients and Methods A total of 40 allergic asthmatics (mild, n=22; moderate-to-severe, n=18) were included in this study. Serum samples, lung function and exhaled nitric oxide data were collected from each subject. A Meso Scale Discovery (MSD) electrochemiluminescence platform was applied to access serum levels of 33 cytokines. Serum cytokine profile was compared between mild and moderate-to-severe allergic asthmatics, and the correlation between serum cytokine levels, lung function and exhaled nitric oxide were analyzed. Results Moderate-to-severe allergic asthmatics displayed higher levels of eotaxin-1, eotaxin-2, MCP-1, MCP-2, MCP-3, YKL-40 and lower IL-23, IL-31 and TRAIL in serum in comparison with mild allergic asthmatics. Serum YKL-40, eotaxin-1 and MCP-1 had the best ability to discriminate mild and moderate-to-severe allergic asthmatics, with an AUC of 0.833, 0.811 and 0.760. Serum IP-10 was positively correlated with FeNO levels, while FnNO displayed a strong positive correlation with serum IL-25. Conclusion Compared with mild allergic asthmatics, significant increase in serum eotaxin-1, eotaxin-2, MCP-1, MCP-2, MCP-3, YKL-40 and decrease in serum IL-23, IL-31 and TRAIL was noted in moderate-to-severe allergic asthmatics. YKL-40, eotaxin-1 and MCP-1 might be candidate biomarkers in reflecting severity in allergic asthma patients.
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Affiliation(s)
- Lin Sun
- Department of Respiratory and Critical Care Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People’s Republic of China
- Institute of Respiratory Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, People’s Republic of China
- Shanghai Key Laboratory of Emergency Prevention, Diagnosis and Treatment of Respiratory Infectious Diseases, Shanghai, People’s Republic of China
| | - Bo Peng
- Department of Respiratory and Critical Care Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People’s Republic of China
- Institute of Respiratory Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, People’s Republic of China
- Shanghai Key Laboratory of Emergency Prevention, Diagnosis and Treatment of Respiratory Infectious Diseases, Shanghai, People’s Republic of China
| | - Jun Zhou
- Department of Respiratory and Critical Care Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People’s Republic of China
- Institute of Respiratory Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, People’s Republic of China
- Shanghai Key Laboratory of Emergency Prevention, Diagnosis and Treatment of Respiratory Infectious Diseases, Shanghai, People’s Republic of China
| | - Ping Wang
- Department of Respiratory and Critical Care Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People’s Republic of China
| | - Yuqing Mo
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, People’s Republic of China
| | - Guofang Xu
- Department of Respiratory and Critical Care Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People’s Republic of China
| | - Yi Tao
- Department of Respiratory and Critical Care Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People’s Republic of China
| | - Hejie Song
- Department of Respiratory and Critical Care Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People’s Republic of China
- Institute of Respiratory Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, People’s Republic of China
- Shanghai Key Laboratory of Emergency Prevention, Diagnosis and Treatment of Respiratory Infectious Diseases, Shanghai, People’s Republic of China
| | - Wei Tang
- Department of Respiratory and Critical Care Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People’s Republic of China
- Institute of Respiratory Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, People’s Republic of China
- Shanghai Key Laboratory of Emergency Prevention, Diagnosis and Treatment of Respiratory Infectious Diseases, Shanghai, People’s Republic of China
- Correspondence: Wei Tang, Department of Respiratory and Critical Care Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People’s Republic of China, Email
| | - Meiling Jin
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, People’s Republic of China
- Meiling Jin, Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, People’s Republic of China, Email
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Wu Y, Shen Y, Zhang J, Wan C, Wang T, Xu D, Yang T, Wen F. Increased serum TRAIL and DR5 levels correlated with lung function and inflammation in stable COPD patients. Int J Chron Obstruct Pulmon Dis 2015; 10:2405-12. [PMID: 26609227 PMCID: PMC4644161 DOI: 10.2147/copd.s92260] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Background Chronic obstructive pulmonary disease (COPD) is associated with abnormal systemic inflammation, and apoptosis is one of the pathogenic mechanisms of COPD. Several studies have suggested that tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) and its receptors were not only involved in diseases associated with apoptosis but also in inflammatory diseases. However, limited data about the possible relationship between COPD and TRAIL/TRAIL-receptors are available. Objective To evaluate the potential relationship between TRAIL/TRAIL-receptors and COPD. Methods Serum levels of TRAIL, decoy receptor 5 (DR5), C-reactive protein, and tumor necrosis factor-α were analyzed using multiplex enzyme-linked immunosorbent assay kits. Then, serum levels of TRAIL and DR5 in 57 COPD patients with 35 healthy controls were compared and correlated with lung function and systemic inflammation. Results Mean levels of serum TRAIL and DR5 were significantly higher in COPD patients than those in controls (50.17±17.70 versus 42.09±15.49 pg/mL, P=0.029; 48.15±22.88 versus 38.94±10.95 pg/mL, P=0.032, respectively). Serum levels of TRAIL and DR5 correlated inversely with forced expiratory volume in 1 second % predicted, an index of lung function in COPD (r=-0.354, P=0.007 for TRAIL; r=−0.394, P=0.002 for DR5) in all participants (r=-0.291, P=0.005 for TRAIL; r=−0.315, P=0.002 for DR5), while DR5 correlated positively with C-reactive protein (r=0.240, P=0.021 for total subjects) and TRAIL correlated positively with tumor necrosis factor-α (r=0.371, P=0.005 for COPD; r=0.349, P=0.001 for total subjects). Conclusion Our results suggested that circulating TRAIL and DR5 increased in COPD patients and were associated with lung function and systemic inflammation in COPD. Future studies are needed to verify whether and how TRAIL and its receptors play roles in COPD.
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Affiliation(s)
- Yanqiu Wu
- Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University, Chengdu, Sichuan, People's Republic of China ; Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China, Chengdu, Sichuan, People's Republic of China
| | - Yongchun Shen
- Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University, Chengdu, Sichuan, People's Republic of China ; Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China, Chengdu, Sichuan, People's Republic of China
| | - Junlong Zhang
- Department of Laboratory Medicine, West China Hospital of Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Chun Wan
- Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University, Chengdu, Sichuan, People's Republic of China ; Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China, Chengdu, Sichuan, People's Republic of China
| | - Tao Wang
- Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University, Chengdu, Sichuan, People's Republic of China ; Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China, Chengdu, Sichuan, People's Republic of China
| | - Dan Xu
- Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University, Chengdu, Sichuan, People's Republic of China ; Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China, Chengdu, Sichuan, People's Republic of China
| | - Ting Yang
- Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University, Chengdu, Sichuan, People's Republic of China ; Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China, Chengdu, Sichuan, People's Republic of China
| | - Fuqiang Wen
- Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University, Chengdu, Sichuan, People's Republic of China ; Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China, Chengdu, Sichuan, People's Republic of China
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Chang S, Linderholm A, Harper R. DUOX-Mediated Signaling Is Not Required for LPS-Induced Neutrophilic Response in the Airways. PLoS One 2015; 10:e0131810. [PMID: 26148206 PMCID: PMC4493023 DOI: 10.1371/journal.pone.0131810] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 06/07/2015] [Indexed: 11/30/2022] Open
Abstract
Oxidant production from DUOX1 has been proposed to lead to neutrophil recruitment into the airways when lung homeostasis is compromised. The objective of this study was to determine whether DUOX-derived hydrogen peroxide is required for LPS-induced neutrophil recruitment, using a functional DUOX knock out mouse model. We found that LPS induced profound neutrophilic lung inflammation in both Duoxa+/+ and Duoxa-/- mice between 3h and 24h. Duoxa-/- mice had significantly higher neutrophil influx 24h after LPS instillation despite similar cytokine levels (KC, MIP-2, or TGF-α) between the two groups. These findings suggest that LPS-TLR-4-induced KC or MIP-2 cytokine induction and subsequent neutrophil recruitment in the airway does not require DUOX-derived hydrogen peroxide from airway epithelium.
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Affiliation(s)
- Sandra Chang
- Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, School of Medicine, University of California at Davis, Davis, California 95616, United States
| | - Angela Linderholm
- Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, School of Medicine, University of California at Davis, Davis, California 95616, United States
| | - Richart Harper
- Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, School of Medicine, University of California at Davis, Davis, California 95616, United States
- * E-mail:
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Intranasal administration of recombinant TRAIL down-regulates CXCL-1/KC in an ovalbumin-induced airway inflammation murine model. PLoS One 2014; 9:e115387. [PMID: 25506835 PMCID: PMC4266651 DOI: 10.1371/journal.pone.0115387] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 11/21/2014] [Indexed: 11/23/2022] Open
Abstract
Ovalbumin (OVA)-sensitized BALB/c mice were i.n. instilled with recombinant TNF-related apoptosis inducing ligand (TRAIL) 24 hours before OVA challenge. The total number of leukocytes and the levels of the chemokine CXCL-1/KC significantly increased in the bronchoalveolar lavage (BAL) fluids of allergic animals with respect to control littermates, but not in the BAL of mice i.n. pretreated with recombinant TRAIL before OVA challenge. In particular, TRAIL pretreatment significantly reduced the BAL percentage of both eosinophils and neutrophils. On the other hand, when TRAIL was administrated simultaneously to OVA challenge its effect on BAL infiltration was attenuated. Overall, the results show that the i.n. pretreatment with TRAIL down-modulated allergic airway inflammation.
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Loreto C, Galanti C, Leonardi R, Musumeci G, Pannone G, Palazzo G, Rusu MC. Possible role of apoptosis in the pathogenesis and clinical evolution of radicular cyst: an immunohistochemical study. Int Endod J 2013; 46:642-8. [DOI: 10.1111/iej.12040] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Accepted: 11/15/2012] [Indexed: 12/31/2022]
Affiliation(s)
- C. Loreto
- Department of Bio-Medical Sciences; Section of Anatomy; University of Catania; Catania; Italy
| | - C. Galanti
- Department of Orthodontics; University of Catania; Catania; Italy
| | - R. Leonardi
- Department of Orthodontics; University of Catania; Catania; Italy
| | - G. Musumeci
- Department of Bio-Medical Sciences; Section of Anatomy; University of Catania; Catania; Italy
| | - G. Pannone
- Department of Surgical Sciences; Institute of Pathology and Cytopathology; University of Foggia; Foggia; Italy
| | - G. Palazzo
- Department of Orthodontics; University of Catania; Catania; Italy
| | - M. C. Rusu
- Faculty of Dental Medicine; “Carol Davila” University of Medicine and Pharmacy; Bucharest; Romania
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Loreto C, Barbagli G, Djinovic R, Vespasiani G, Carnazza ML, Miano R, Musumeci G, Sansalone S. Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) and its death receptor (DR5) in Peyronie's disease. A biomolecular study of apoptosis activation. J Sex Med 2010; 8:109-15. [PMID: 20840533 DOI: 10.1111/j.1743-6109.2010.02003.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Peyronie's disease (PD) is a connective tissue disorder of tunica albuginea (TA), a thick fibrous sheath surrounding the corpora cavernosa of the penis. Relatively, little is known about the disease itself. AIM To investigate whether the apoptosis cascade in degenerated and macroscopically deformed TA from men with PD is activated through the extrinsic pathway, by assessing the immunoexpression of tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) and its death receptor, DR5. METHODS TA plaques from 15 men with PD and from four unaffected men were processed for TRAIL and DR5 immunohistochemistry and Western blot analysis. MAIN OUTCOME MEASURES A greater understanding of the pathophysiology of PD through a molecular approach, to gain insights that may lead to novel forms of treatment. RESULTS Activation of the apoptosis mechanisms through the extrinsic pathway was demonstrated by TRAIL and DR5 overexpression in fibroblasts and myofibroblasts from affected TA. CONCLUSION The finding that apoptosis activation in TA plaques occurs, at least in part, via the extrinsic pathway may help devise novel therapeutic options for these patients.
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Affiliation(s)
- Carla Loreto
- Department of Anatomy, Diagnostic Pathology, Forensic Medicine, Hygiene and Public Health, University of Catania, Italy.
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Collison A, Foster PS, Mattes J. Emerging role of tumour necrosis factor-related apoptosis-inducing ligand (TRAIL) as a key regulator of inflammatory responses. Clin Exp Pharmacol Physiol 2009; 36:1049-53. [PMID: 19656161 DOI: 10.1111/j.1440-1681.2009.05258.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
1. Tumour necrosis factor-related apoptosis-inducing ligand (TRAIL) induces apoptosis in tumour cells while leaving most non-transformed cells unharmed. Binding of TRAIL to its death receptors (DR4 and DR5) activates the extrinsic apoptotic pathway by recruiting procaspase 8 into the death-inducing silencing complex. Cleavage of the BH-3 only peptide Bid by caspase 8 links the apoptotic TRAIL signal to the mitochondrial pathway and the subsequent release of cytochrome c. 2. In addition, TRAIL binds to neutralizing decoy receptors (DcR1 and DcR2). Signalling through DcR2, DR4 and DR5 can activate pro-inflammatory intracellular molecules such as mitogen-activated protein kinase, protein kinase B and nuclear factor-kappaB. 3. Recent studies have identified an important role for TRAIL in regulating immune responses to viruses, self-antigen and allergens. Increased concentrations of TRAIL are found in virus infections of the lung and TRAIL affects the antiviral response and resolution of infection. In addition, TRAIL is upregulated in the airways of asthmatics and inhibition results in reduced inflammation, T helper 2 cytokine and CCL20 release, as well as abolishing the development of airway hyperreactivity in experimental models. 4. Characterization of the specific receptor systems activated and the pro-inflammatory factors regulated by TRAIL in vivo may lead to the development of novel therapeutic strategies for diseases as diverse as infection, autoimmunity and asthma.
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Affiliation(s)
- Adam Collison
- Immunology and Respiratory Research Group, School of Biomedical Sciences, Faculty of Health, University of Newcastle and Hunter Medical Research Institute, Callaghan, New South Wales, Australia
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Solarewicz-Madejek K, Basinski TM, Crameri R, Akdis M, Akkaya A, Blaser K, Rabe KF, Akdis CA, Jutel M. T cells and eosinophils in bronchial smooth muscle cell death in asthma. Clin Exp Allergy 2009; 39:845-55. [PMID: 19400895 DOI: 10.1111/j.1365-2222.2009.03244.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Bronchial smooth muscle cells (SMC) proliferate, express adhesion molecules, secrete cytokines and thus efficiently contribute to the pathogenesis of asthma. OBJECTIVE The aim of the study was to investigate whether, and by which mechanism, T cells and eosinophils can cause death of airway SMC. METHODS The T cell- and eosinophil-induced cell death was analysed in primary human bronchial SMC cultures as well as in bronchial biopsy specimens from non-asthmatic and asthmatic individuals. RESULTS Bronchial SMC death showed characteristic morphological features of apoptosis in 3-6 days cultures with inflammatory cytokines (IFN-gamma, TNF-alpha), soluble death ligands [sFasL, TNF-related apoptosis-inducing ligand (TRAIL)] and activated T-helper type 1 (Th1) and Th2 cell supernatants. The recombinant eosinophil cationic protein induced SMC necrosis within 1 h. Resting SMC expressed the death receptors TNFR1, TNFR2, Fas, TRAILR1, TRAILR2 and membrane FasL as a death-inducing ligand. IFN-gamma and TNF-alpha up-regulated TNFR1, TNFR2, Fas and membrane FasL on SMC. TNF-alpha up-regulated TRAILR1 and TRAILR2; sFasL up-regulated TNFR2. The intracellular caspase-3 activation in SMC was significantly increased by IFN-gamma, sFasL, TRAIL, Th1 and Th2 cell supernatants. Increased expression of TRAIL in asthmatics, but not in non-asthmatic individuals was demonstrated in situ. The apoptosis receptors TRAILR1 and TRAILR2 were expressed in SMC and epithelial cells both in healthy and asthmatic biopsies. Prominent apoptosis of SMC was observed in fatal asthma, but not intermittent asthma biopsies. CONCLUSION The demonstration of bronchial SMC death both by apoptosis and necrosis indicates the essential role of T cells and eosinophils in the bronchial tissue injury particularly in the severe asthma.
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Morissette MC, Vachon-Beaudoin G, Parent J, Chakir J, Milot J. Increased p53 level, Bax/Bcl-x(L) ratio, and TRAIL receptor expression in human emphysema. Am J Respir Crit Care Med 2008; 178:240-7. [PMID: 18511705 DOI: 10.1164/rccm.200710-1486oc] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
RATIONALE Emphysema is mainly known for the complex inflammatory processes associated with its development. In addition to lung inflammation, it is now accepted that increased alveolar cell apoptosis is also part of emphysema pathophysiology. However, little is known about the mechanisms involved in alveolar apoptosis. We postulate that oxidative stress and proinflammatory cytokines could lead to p53 accumulation, Bax/Bcl-x(L) ratio elevation, and higher tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) receptor levels in the emphysematous lung. OBJECTIVES To evaluate the expression of p53, Bax, Bcl-x(L), TRAIL, and TRAIL receptors in lung parenchyma from nonemphysematous nonsmokers and smokers and emphysematous smokers and ex-smokers and to determine whether H2O2 and/or TNF can modulate the expression of these apoptotic proteins. METHODS p53, Bax, Bcl-x(L), and TRAIL receptor protein levels in lung parenchyma were measured by Western blot, and TRAIL mRNA levels were measured by real-time polymerase chain reaction. Changes in TRAIL receptor, Bax, Bcl-x(L), and p53 protein levels after in vitro H2O2 and/or TNF stimulation of A549 cells were also assessed by Western blot. MEASUREMENTS AND MAIN RESULTS The p53 protein levels, the Bax/Bcl-x(L) ratio, and TRAIL receptors 1, 2, and 3 protein levels were significantly higher in subjects with emphysema. Moreover, they were also increased after H2O2 and TNF treatments of A549 cells. CONCLUSIONS These findings suggest that oxidative stress and proinflammatory cytokines may be involved in the elevation of p53 levels, the Bax/Bcl-x(L) ratio, and TRAIL receptor levels, new mechanisms that may be implicated in the increased alveolar cell apoptosis that occurs in emphysema.
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Affiliation(s)
- Mathieu C Morissette
- Centre de Recherche de l'Hôpital Laval, Institut Universitaire de Cardiologie et de Pneumologie de l'Université Laval, Quebec City, Canada
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Finnberg N, Klein-Szanto AJP, El-Deiry WS. TRAIL-R deficiency in mice promotes susceptibility to chronic inflammation and tumorigenesis. J Clin Invest 2008; 118:111-23. [PMID: 18079962 DOI: 10.1172/jci29900] [Citation(s) in RCA: 138] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2006] [Accepted: 10/18/2007] [Indexed: 12/15/2022] Open
Abstract
Preclinical data support the potential of the death-signaling receptors for TRAIL as targets for cancer therapy. However, it is unclear whether these death-signaling receptors suppress the emergence and growth of malignant tumors in vivo. Herein we show that TNF-related apoptosis-inducing ligand receptor (TRAIL-R), the only proapoptotic death-signaling receptor for TRAIL in the mouse, suppresses inflammation and tumorigenesis. Loss of a single TRAIL-R allele on the lymphoma-prone Emu-myc genetic background significantly reduced median lymphoma-free survival. TRAIL-R-deficient lymphomas developed with equal frequency irrespective of mono- or biallelic loss of TRAIL-R, had increased metastatic potential, and showed apoptotic defects relative to WT littermates. In addition, TRAIL-R-/- mice showed decreased long-term survival following a sublethal dose of ionizing radiation. Histological evaluation of moribund irradiated TRAIL-R-/- animals showed hallmarks of bronchopneumonia as well as tumor formation with increased NF-kappaB p65 expression. TRAIL-R also suppressed diethylnitrosamine-induced (DEN-induced) hepatocarcinogenesis, as an increased number of large tumors with apoptotic defects developed in the livers of DEN-treated TRAIL-R-/- mice. Thus TRAIL-R may function as an inflammation and tumor suppressor in multiple tissues in vivo.
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Affiliation(s)
- Niklas Finnberg
- Laboratory of Molecular Oncology and Cell Cycle Regulation, Department of Medicine, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104, USA
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Cheng G, Shao Z, Chaudhari B, Agrawal DK. Involvement of chloride channels in TGF-beta1-induced apoptosis of human bronchial epithelial cells. Am J Physiol Lung Cell Mol Physiol 2007; 293:L1339-47. [PMID: 17873007 DOI: 10.1152/ajplung.00121.2007] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Widespread damage of airway epithelium and defective epithelial repair are hallmarks of chronic asthma. Growth factors and cytokines spatially and temporally regulate epithelial shedding and repair. Within this context, a key function is exerted by transforming growth factor (TGF)-beta. Recent growing evidence suggests that chloride (Cl(-)) channels are critical to cell apoptosis. We examined the effects of TGF-beta1 on Cl(-) channel expression and activity and its relationship with apoptosis in human bronchial epithelial cells (HBECs). The small interfering RNA (siRNA) approach was used to investigate the potential role of CLC-3, a member of the volume-regulated Cl(-) channel family, in apoptosis of HBECs. TGF-beta1 significantly induced HBEC apoptosis, which paralleled to a significant decrease in the endogenous expression of CLC-3 protein and mRNA transcripts. Outward rectifying and voltage-dependent CLC-3-like Cl(-) currents in HBECs were diminished by TGF-beta1. siRNA for CLC-3 abolished Cl(-) current and enhanced TGF-beta1-induced cell apoptosis. Overexpression of CLC-3 in HBECs inhibited TGF-beta1-induced cell apoptosis. Bcl-2 was also downregulated after TGF-beta stimulation. TGF-beta1-induced cell apoptosis was suppressed in Bcl-2-transfected HBECs. Our data demonstrate that CLC-3-like voltage-gated chloride channels play a critical role in TGF-beta-induced apoptosis of human airway epithelial cells.
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Affiliation(s)
- Gang Cheng
- Department of Biomedical Sciences, Creighton Univ. School of Medicine, CRISS II Rm. 510, 2500 California Plaza, Omaha, NE 68178, USA
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Mitsuyama H, Matsuyama W, Watanabe M, Shirahama Y, Higashimoto I, Wada T, Osame M, Arimura K. Increased expression of TRAIL receptor 3 on eosinophils in Churg-Strauss syndrome. ACTA ACUST UNITED AC 2007; 56:662-73. [PMID: 17265502 DOI: 10.1002/art.22387] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Prolonged survival of eosinophils plays an important role in the pathogenesis of Churg-Strauss syndrome (CSS); however, its detailed molecular mechanism is still unclear. TRAIL and its receptors are expressed on a variety of cells, including eosinophils. In this study, we examined the expression of TRAIL receptors on eosinophils from patients with CSS. METHODS TRAIL receptor expression was assessed on eosinophils from healthy volunteers, patients with CSS, patients with asthma, and patients with hypereosinophilia due to parasitic infection. TRAIL-induced apoptosis of eosinophils was compared between the patients with CSS and patients with asthma. RNA interference was used to assess the effects of suppression of TRAIL receptor 3. RESULTS Expression of TRAIL receptor 3, a decoy receptor that acts as an antiapoptotic receptor, on eosinophils from patients with CSS was significantly higher than that in the other subjects. Moreover, in CSS, serum TRAIL receptor 3 levels showed a significant positive correlation with peripheral eosinophil counts, tissue-infiltrating eosinophils stained positive for this receptor, and peripheral T cells expressed TRAIL on their surface. Compared with asthma patients, eosinophils from CSS patients showed a significantly lower percentage of recombinant TRAIL, less autologous T cell-induced apoptosis, and decreased level of active caspase 3. Suppression of TRAIL receptor 3 through RNA interference significantly increased the recombinant TRAIL-induced apoptosis of eosinophils from CSS patients. CONCLUSION Increased expression of TRAIL receptor 3 on eosinophils from patients with CSS was observed. These alterations in TRAIL receptor 3 expression might be involved in the molecular pathogenesis of CSS eosinophilia.
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Chaudhari BR, Murphy RF, Agrawal DK. Following the TRAIL to apoptosis. Immunol Res 2007; 35:249-62. [PMID: 17172650 DOI: 10.1385/ir:35:3:249] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/1999] [Revised: 11/30/1999] [Accepted: 11/30/1999] [Indexed: 12/15/2022]
Abstract
Apoptosis, programmed cell death, eliminates injured or harmful cells. It can mediate its response through the actions of death ligands including TRAIL. TRAIL, a member of TNF superfamily, induces apoptosis of transformed cells through the action of death domain receptors DR-4 and DR5. It directly induces apoptosis through an extrinsic pathway, which involves the activation of caspases. TRAIL also is able to prevent apoptosis through the actions of its decoy receptors DcR-1 and DcR-2. Various regulators of TRAIL include FADD, IAPs, Bcl-2s, p53, and FLIPs. TRAIL is present in cells involved in asthma including eosinophils, mast cells, fibroblasts, and airway epithelial cells. It is expressed in airway remodeling and may be linked with the pathways of transforming growth factor-beta1, which is thought to cause damage to the epithelium. The repair process of the epithelium is hindered as a result of increased apoptosis induced by TGF-beta1, which overlaps with the pathways of TRAIL. Analogs of TRAIL could have therapeutical applications for asthma. TRAIL is also seen as the basis for a "miracle" drug for cancer because of its ability to selectively kill cancer cells.
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Affiliation(s)
- Bharti R Chaudhari
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE 68178, USA
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